/* roulang page: index */
:root {
            --primary: #0B6E5E;
            --primary-dark: #094F45;
            --primary-light: #E6F3F0;
            --accent: #D97732;
            --accent-dark: #B86025;
            --bg: #FBFDFC;
            --text: #1C2B28;
            --text-muted: #5D6F69;
            --border: #E6F3F0;
            --border-strong: #DCE8E4;
            --white: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-pill: 50px;
            --shadow-sm: 0 2px 8px rgba(11, 110, 94, 0.06);
            --shadow-md: 0 6px 18px rgba(11, 110, 94, 0.06);
            --shadow-lg: 0 10px 28px rgba(11, 110, 94, 0.12);
            --shadow-xl: 0 16px 40px rgba(11, 110, 94, 0.15);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 40px;
            --container-max: 1200px;
            --gutter-desktop: 24px;
            --gutter-mobile: 16px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), opacity var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(11, 110, 94, 0.3);
            outline-offset: 2px;
        }

        .kaiyun-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--gutter-desktop);
            padding-right: var(--gutter-desktop);
        }

        @media (max-width: 640px) {
            .kaiyun-container {
                padding-left: var(--gutter-mobile);
                padding-right: var(--gutter-mobile);
            }
        }

        /* Header / Navigation */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(11, 110, 94, 0.06);
        }

        .kaiyun-header .top-bar {
            background: transparent;
            padding: 0;
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0 var(--gutter-desktop);
            min-height: 72px;
        }

        .kaiyun-header .top-bar,
        .kaiyun-header .top-bar ul {
            background: transparent;
        }

        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .kaiyun-logo a {
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .kaiyun-logo a:hover {
            color: var(--primary-dark);
        }

        .kaiyun-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 16px;
            flex-shrink: 0;
        }

        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-nav-links li {
            margin: 0;
        }

        .kaiyun-nav-links a {
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-pill);
            position: relative;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .kaiyun-nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .kaiyun-nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .kaiyun-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }

        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }

        .kaiyun-btn-primary {
            background: var(--primary);
            color: var(--white);
        }

        .kaiyun-btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(11, 110, 94, 0.25);
            transform: scale(0.97);
        }

        .kaiyun-btn-accent {
            background: var(--accent);
            color: var(--white);
        }

        .kaiyun-btn-accent:hover {
            background: var(--accent-dark);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(217, 119, 50, 0.3);
            transform: scale(0.97);
        }

        .kaiyun-btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .kaiyun-btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .kaiyun-btn-outline-white {
            background: transparent;
            color: var(--white);
            border: 1px solid rgba(255, 255, 255, 0.7);
        }

        .kaiyun-btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--white);
            border-color: var(--white);
        }

        .kaiyun-btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .kaiyun-btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }

        .kaiyun-hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 24px;
            color: var(--primary);
            padding: 8px;
        }

        @media (max-width: 1024px) {
            .kaiyun-header .top-bar {
                flex-wrap: wrap;
                padding: 0 var(--gutter-desktop);
            }
            .kaiyun-nav-links {
                gap: 4px;
            }
            .kaiyun-nav-links a {
                padding: 8px 12px;
                font-size: 14px;
            }
        }

        @media (max-width: 768px) {
            .kaiyun-header .top-bar {
                padding: 0 var(--gutter-mobile);
                min-height: 60px;
                flex-wrap: nowrap;
            }
            .kaiyun-logo {
                font-size: 17px;
            }
            .kaiyun-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
            .kaiyun-hamburger {
                display: block;
                margin-left: auto;
            }
            .kaiyun-nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--white);
                padding: 16px 0;
                border-top: 1px solid var(--border);
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                z-index: 99;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .kaiyun-nav-links.open {
                display: flex;
            }
            .kaiyun-nav-links li {
                width: 100%;
            }
            .kaiyun-nav-links a {
                display: block;
                padding: 12px 20px;
                border-radius: 0;
            }
            .kaiyun-nav-links a.active::after {
                display: none;
            }
            .kaiyun-nav-cta {
                display: none;
            }
            .kaiyun-nav-cta.mobile-visible {
                display: flex;
                width: 100%;
                padding: 12px 20px;
                flex-direction: column;
                gap: 8px;
            }
            .kaiyun-nav-cta.mobile-visible .kaiyun-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* Hero Section */
        .kaiyun-hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            background: linear-gradient(rgba(11, 110, 94, 0.78), rgba(28, 43, 40, 0.7)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .kaiyun-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: rgba(217, 119, 50, 0.15);
            pointer-events: none;
        }

        .kaiyun-hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 80px var(--gutter-desktop);
            width: 100%;
        }

        .kaiyun-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            color: var(--white);
            letter-spacing: 1px;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .kaiyun-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--white);
            margin: 0 0 18px;
            letter-spacing: 0.5px;
        }

        .kaiyun-hero-subtitle {
            font-size: 18px;
            color: #E6F3F0;
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 32px;
            font-weight: 400;
        }

        .kaiyun-hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }

        .kaiyun-play-btn {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            border: 2px solid rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 22px;
            cursor: pointer;
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .kaiyun-play-btn:hover {
            background: rgba(255, 255, 255, 0.35);
            border-color: var(--white);
            transform: scale(1.05);
        }

        .kaiyun-hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

        .kaiyun-hero-stat {
            text-align: left;
            color: var(--white);
            padding-right: 32px;
            border-right: 1px solid rgba(255, 255, 255, 0.25);
        }

        .kaiyun-hero-stat:last-child {
            border-right: none;
            padding-right: 0;
        }

        .kaiyun-hero-stat-number {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .kaiyun-hero-stat-label {
            font-size: 13px;
            color: rgba(230, 243, 240, 0.85);
        }

        @media (max-width: 768px) {
            .kaiyun-hero {
                min-height: 70vh;
            }
            .kaiyun-hero-content {
                padding: 60px var(--gutter-mobile);
            }
            .kaiyun-hero h1 {
                font-size: 28px;
                line-height: 1.35;
            }
            .kaiyun-hero-subtitle {
                font-size: 16px;
            }
            .kaiyun-hero-stats {
                gap: 16px;
            }
            .kaiyun-hero-stat {
                padding-right: 16px;
            }
            .kaiyun-hero-stat-number {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .kaiyun-hero {
                min-height: 65vh;
            }
            .kaiyun-hero h1 {
                font-size: 24px;
            }
            .kaiyun-hero-stats {
                flex-direction: column;
                gap: 8px;
            }
            .kaiyun-hero-stat {
                border-right: none;
                padding-right: 0;
                padding-bottom: 8px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            }
            .kaiyun-hero-stat:last-child {
                border-bottom: none;
            }
        }

        /* Section Common */
        .kaiyun-section {
            padding: var(--section-gap-desktop) 0;
        }

        .kaiyun-section-alt {
            background: var(--primary-light);
        }

        .kaiyun-section-header {
            margin-bottom: 40px;
        }

        .kaiyun-section-tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .kaiyun-section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin: 0 0 12px;
        }

        .kaiyun-section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 768px) {
            .kaiyun-section {
                padding: var(--section-gap-mobile) 0;
            }
            .kaiyun-section-title {
                font-size: 22px;
            }
            .kaiyun-section-header {
                margin-bottom: 24px;
            }
        }

        /* Pain Point Section - Asymmetric Cards */
        .kaiyun-pain-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 24px;
        }

        .kaiyun-pain-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .kaiyun-pain-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .kaiyun-pain-card:nth-child(2) {
            margin-top: 40px;
        }

        .kaiyun-pain-card:nth-child(3) {
            margin-top: -20px;
        }

        .kaiyun-pain-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .kaiyun-pain-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text);
        }

        .kaiyun-pain-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .kaiyun-pain-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .kaiyun-pain-card:nth-child(2),
            .kaiyun-pain-card:nth-child(3) {
                margin-top: 0;
            }
        }

        /* Solution Section */
        .kaiyun-solution {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .kaiyun-solution-steps {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-solution-step {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }

        .kaiyun-solution-step:last-child {
            border-bottom: none;
        }

        .kaiyun-step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .kaiyun-solution-step h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 6px;
        }

        .kaiyun-solution-step p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
        }

        .kaiyun-solution-img-wrap {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .kaiyun-solution-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .kaiyun-solution-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(11, 110, 94, 0.9);
            color: var(--white);
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        @media (max-width: 768px) {
            .kaiyun-solution {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .kaiyun-solution-img-wrap img {
                min-height: 220px;
            }
        }

        /* Membership Section */
        .kaiyun-membership-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .kaiyun-membership-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .kaiyun-membership-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .kaiyun-membership-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            background: linear-gradient(180deg, #F0FAF7 0%, var(--white) 100%);
        }

        .kaiyun-membership-card.featured::before {
            content: '热门推荐';
            position: absolute;
            top: 16px;
            right: -30px;
            background: var(--accent);
            color: var(--white);
            padding: 4px 36px;
            font-size: 12px;
            font-weight: 600;
            transform: rotate(45deg);
            letter-spacing: 1px;
        }

        .kaiyun-membership-tier {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .kaiyun-membership-price {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .kaiyun-membership-price span {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-muted);
        }

        .kaiyun-membership-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .kaiyun-membership-features {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
            text-align: left;
        }

        .kaiyun-membership-features li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 1px solid var(--border);
        }

        .kaiyun-membership-features li:last-child {
            border-bottom: none;
        }

        .kaiyun-membership-features i {
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .kaiyun-membership-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* Data Analysis Section */
        .kaiyun-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 32px;
        }

        .kaiyun-data-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            border: 1px solid var(--border);
            text-align: center;
            transition: all var(--transition);
        }

        .kaiyun-data-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .kaiyun-data-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .kaiyun-data-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        .kaiyun-data-note {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .kaiyun-data-note h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 10px;
        }

        .kaiyun-data-note p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .kaiyun-data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .kaiyun-data-number {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .kaiyun-data-grid {
                grid-template-columns: 1fr;
            }
        }

        /* News Section */
        .kaiyun-news-layout {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .kaiyun-news-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .kaiyun-news-item:hover {
            padding-left: 8px;
        }

        .kaiyun-news-item:last-child {
            border-bottom: none;
        }

        .kaiyun-news-date {
            width: 60px;
            flex-shrink: 0;
            text-align: center;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            padding: 10px 6px;
            align-self: flex-start;
        }

        .kaiyun-news-date-day {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }

        .kaiyun-news-date-month {
            font-size: 12px;
            color: var(--text-muted);
        }

        .kaiyun-news-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 6px;
            line-height: 1.5;
        }

        .kaiyun-news-content p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .kaiyun-news-sidebar {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .kaiyun-news-sidebar h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 16px;
            color: var(--primary);
        }

        .kaiyun-news-sidebar-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-news-sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .kaiyun-news-sidebar-list li:last-child {
            border-bottom: none;
        }

        .kaiyun-news-sidebar-list i {
            color: var(--accent);
            font-size: 12px;
        }

        @media (max-width: 768px) {
            .kaiyun-news-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .kaiyun-news-item {
                flex-direction: column;
                gap: 10px;
            }
            .kaiyun-news-date {
                width: 52px;
                padding: 8px 4px;
            }
        }

        /* Testimonials */
        .kaiyun-testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .kaiyun-testimonial-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .kaiyun-testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .kaiyun-testimonial-stars {
            color: var(--accent);
            font-size: 14px;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .kaiyun-testimonial-quote {
            font-size: 14px;
            color: var(--text);
            line-height: 1.7;
            margin-bottom: 16px;
            position: relative;
            padding-left: 12px;
        }

        .kaiyun-testimonial-quote::before {
            content: '"';
            font-size: 28px;
            color: var(--primary-light);
            position: absolute;
            left: -6px;
            top: -8px;
            font-weight: 700;
        }

        .kaiyun-testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .kaiyun-testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
            overflow: hidden;
        }

        .kaiyun-testimonial-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .kaiyun-testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .kaiyun-testimonial-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .kaiyun-testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* CTA / Activation Section */
        .kaiyun-cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 60px 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .kaiyun-cta-section::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(217, 119, 50, 0.2);
            pointer-events: none;
        }

        .kaiyun-cta-content {
            position: relative;
            z-index: 2;
        }

        .kaiyun-cta-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--white);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .kaiyun-cta-content p {
            font-size: 15px;
            color: #E6F3F0;
            margin: 0 0 24px;
            line-height: 1.7;
        }

        .kaiyun-cta-form {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-xl);
            position: relative;
            z-index: 2;
        }

        .kaiyun-cta-form h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 16px;
            color: var(--text);
        }

        .kaiyun-form-group {
            margin-bottom: 16px;
        }

        .kaiyun-form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            margin-bottom: 6px;
        }

        .kaiyun-form-group input,
        .kaiyun-form-group textarea {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-sm);
            font-size: 16px;
            color: var(--text);
            background: var(--white);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .kaiyun-form-group input:focus,
        .kaiyun-form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 110, 94, 0.1);
            outline: none;
        }

        @media (max-width: 768px) {
            .kaiyun-cta-section {
                grid-template-columns: 1fr;
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .kaiyun-cta-content h2 {
                font-size: 22px;
            }
        }

        /* FAQ Section */
        .kaiyun-faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .kaiyun-faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .kaiyun-faq-item.active {
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .kaiyun-faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            transition: color var(--transition);
            user-select: none;
        }

        .kaiyun-faq-question:hover {
            color: var(--primary);
        }

        .kaiyun-faq-item.active .kaiyun-faq-question {
            color: var(--primary);
        }

        .kaiyun-faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .kaiyun-faq-item.active .kaiyun-faq-icon {
            transform: rotate(45deg);
        }

        .kaiyun-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            font-size: 15px;
            color: var(--text-muted);
            padding: 0 24px;
            line-height: 1.7;
            background: var(--bg);
        }

        .kaiyun-faq-item.active .kaiyun-faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* Partners & Brand Section */
        .kaiyun-partners-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-bottom: 32px;
        }

        .kaiyun-partner-tag {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all var(--transition);
        }

        .kaiyun-partner-tag:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .kaiyun-partner-tag-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            flex-shrink: 0;
        }

        .kaiyun-partner-tag h4 {
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 3px;
        }

        .kaiyun-partner-tag p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        .kaiyun-brand-about {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .kaiyun-brand-about h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 0 0 14px;
            color: var(--text);
        }

        .kaiyun-brand-about p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
        }

        @media (max-width: 768px) {
            .kaiyun-partners-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .kaiyun-brand-about {
                padding: 24px 20px;
            }
        }

        /* Footer */
        .kaiyun-footer {
            background: var(--primary-dark);
            color: #E6F3F0;
            padding: 60px 0 20px;
            margin-top: 0;
        }

        .kaiyun-footer-content {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 24px;
        }

        .kaiyun-footer-brand .kaiyun-logo {
            color: var(--white);
            font-size: 22px;
            margin-bottom: 12px;
        }

        .kaiyun-footer-brand .kaiyun-logo a {
            color: var(--white);
        }

        .kaiyun-footer-brand p {
            font-size: 14px;
            color: #A9C5BC;
            line-height: 1.7;
            margin: 0;
        }

        .kaiyun-footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--white);
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }

        .kaiyun-footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-footer-col ul li {
            margin-bottom: 8px;
        }

        .kaiyun-footer-col ul li a {
            color: #A9C5BC;
            font-size: 14px;
            transition: color var(--transition);
        }

        .kaiyun-footer-col ul li a:hover {
            color: var(--white);
            text-decoration: underline;
        }

        .kaiyun-footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #A9C5BC;
        }

        .kaiyun-footer-bottom a {
            color: #A9C5BC;
            text-decoration: none;
            transition: color var(--transition);
        }

        .kaiyun-footer-bottom a:hover {
            color: var(--white);
        }

        .kaiyun-footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .kaiyun-footer {
                padding: 40px 0 16px;
            }
            .kaiyun-footer-content {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 24px;
            }
            .kaiyun-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* Utility */
        .text-center {
            text-align: center;
        }

        .text-primary {
            color: var(--primary);
        }

        .text-accent {
            color: var(--accent);
        }

        .mt-16 {
            margin-top: 16px;
        }

        .mt-24 {
            margin-top: 24px;
        }

        .mt-32 {
            margin-top: 32px;
        }

        .mb-0 {
            margin-bottom: 0;
        }

        .kaiyun-tag-pill {
            display: inline-block;
            padding: 4px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
        }

        .kaiyun-rating {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--accent);
        }

        /* Success check list */
        .kaiyun-check-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text);
        }

        .kaiyun-check-list i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* Foundation Overrides */
        .top-bar,
        .top-bar ul {
            background: transparent;
        }

        @media (max-width: 768px) {
            .kaiyun-header .top-bar {
                position: relative;
            }
        }

        /* Print */
        @media print {
            .kaiyun-hero {
                min-height: 300px;
            }
            .kaiyun-footer,
            .kaiyun-nav-cta {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0B6E5E;
            --primary-dark: #094F45;
            --primary-light: #E6F3F0;
            --accent: #D97732;
            --accent-dark: #B86025;
            --bg: #FBFDFC;
            --text: #1C2B28;
            --text-muted: #5D6F69;
            --border: #E6F3F0;
            --border-strong: #DCE8E4;
            --white: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-pill: 50px;
            --shadow-sm: 0 2px 8px rgba(11, 110, 94, 0.06);
            --shadow-md: 0 6px 18px rgba(11, 110, 94, 0.06);
            --shadow-lg: 0 10px 28px rgba(11, 110, 94, 0.12);
            --shadow-xl: 0 16px 40px rgba(11, 110, 94, 0.15);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 40px;
            --container-max: 1200px;
            --gutter-desktop: 24px;
            --gutter-mobile: 16px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), opacity var(--transition), background var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(11, 110, 94, 0.3);
            outline-offset: 2px;
        }
        .kaiyun-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--gutter-desktop);
            padding-right: var(--gutter-desktop);
        }
        @media (max-width: 639px) {
            .kaiyun-container {
                padding-left: var(--gutter-mobile);
                padding-right: var(--gutter-mobile);
            }
        }
        /* Header / Navigation */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(11, 110, 94, 0.06);
        }
        .kaiyun-header .top-bar {
            background: transparent;
            padding: 0;
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0 var(--gutter-desktop);
            min-height: 72px;
            position: relative;
        }
        .kaiyun-header .top-bar,
        .kaiyun-header .top-bar ul {
            background: transparent;
        }
        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .kaiyun-logo a {
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .kaiyun-logo a:hover {
            color: var(--primary-dark);
        }
        .kaiyun-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 16px;
            flex-shrink: 0;
        }
        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .kaiyun-nav-links li {
            margin: 0;
        }
        .kaiyun-nav-links a {
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-pill);
            position: relative;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .kaiyun-nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .kaiyun-nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .kaiyun-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .kaiyun-btn-primary {
            background: var(--primary);
            color: var(--white);
        }
        .kaiyun-btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: scale(0.97);
            box-shadow: 0 4px 12px rgba(11, 110, 94, 0.25);
        }
        .kaiyun-btn-accent {
            background: var(--accent);
            color: var(--white);
        }
        .kaiyun-btn-accent:hover {
            background: var(--accent-dark);
            color: var(--white);
            transform: scale(0.97);
            box-shadow: 0 4px 12px rgba(217, 119, 50, 0.3);
        }
        .kaiyun-btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .kaiyun-btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }
        .kaiyun-btn-outline-white {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: var(--white);
        }
        .kaiyun-btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--white);
            color: var(--white);
        }
        .kaiyun-btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }
        .kaiyun-btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }
        .kaiyun-hamburger {
            display: none;
            background: transparent;
            border: none;
            font-size: 24px;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .kaiyun-hamburger:hover {
            background: var(--primary-light);
        }
        @media (max-width: 1023px) {
            .kaiyun-hamburger {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .kaiyun-nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 16px var(--gutter-mobile);
                box-shadow: 0 10px 30px rgba(11, 110, 94, 0.1);
                border-bottom: 1px solid var(--border);
                gap: 4px;
                z-index: 99;
            }
            .kaiyun-nav-links.open {
                display: flex;
            }
            .kaiyun-nav-links li {
                width: 100%;
            }
            .kaiyun-nav-links a {
                display: block;
                width: 100%;
                padding: 14px 16px;
                border-radius: var(--radius-md);
                font-size: 16px;
            }
            .kaiyun-nav-links a.active::after {
                display: none;
            }
            .kaiyun-nav-links a.active {
                border-left: 4px solid var(--primary);
                background: var(--primary-light);
            }
            .mobile-visible {
                display: flex !important;
            }
            .kaiyun-nav-cta.desktop-cta {
                display: none !important;
            }
        }
        @media (min-width: 1024px) {
            .mobile-visible {
                display: none !important;
            }
        }
        /* Breadcrumb */
        .kaiyun-breadcrumb {
            background: var(--bg);
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
        }
        .kaiyun-breadcrumb .kaiyun-container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-muted);
        }
        .kaiyun-breadcrumb a {
            color: var(--text-muted);
        }
        .kaiyun-breadcrumb a:hover {
            color: var(--primary);
        }
        .kaiyun-breadcrumb .sep {
            color: var(--border-strong);
        }
        .kaiyun-breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        /* Hero - 众筹预热风格 */
        .kaiyun-hero-membership {
            position: relative;
            background: var(--primary-dark);
            background-image: linear-gradient(135deg, rgba(11, 110, 94, 0.92) 0%, rgba(28, 43, 40, 0.82) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            color: var(--white);
            overflow: hidden;
        }
        .kaiyun-hero-membership::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(217, 119, 50, 0.15);
            pointer-events: none;
        }
        .kaiyun-hero-membership::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -50px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }
        .kaiyun-hero-grid {
            display: grid;
            grid-template-columns: 1fr 420px;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .kaiyun-hero-left h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--white);
            margin: 0 0 16px 0;
            letter-spacing: 1px;
        }
        .kaiyun-hero-left .kaiyun-hero-subtitle {
            font-size: 17px;
            color: var(--primary-light);
            margin: 0 0 28px 0;
            max-width: 520px;
            line-height: 1.7;
        }
        .kaiyun-hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .kaiyun-hero-trust {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }
        .kaiyun-hero-trust-item {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .kaiyun-hero-trust-item i {
            color: var(--accent);
            font-size: 16px;
        }
        .kaiyun-hero-right {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .kaiyun-progress-ring-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-bottom: 24px;
        }
        .kaiyun-progress-ring {
            position: relative;
            width: 140px;
            height: 140px;
        }
        .kaiyun-progress-ring svg {
            transform: rotate(-90deg);
        }
        .kaiyun-progress-ring .bg-circle {
            fill: none;
            stroke: rgba(255, 255, 255, 0.15);
            stroke-width: 10;
        }
        .kaiyun-progress-ring .fg-circle {
            fill: none;
            stroke: var(--accent);
            stroke-width: 10;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.2s ease;
        }
        .kaiyun-progress-ring .ring-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }
        .kaiyun-progress-ring .ring-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--white);
            line-height: 1.2;
        }
        .kaiyun-progress-ring .ring-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
        }
        .kaiyun-progress-title {
            text-align: center;
            font-size: 16px;
            color: var(--primary-light);
            margin: 12px 0 0;
            font-weight: 500;
        }
        .kaiyun-tier-preview {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .kaiyun-tier-item {
            flex: 1;
            min-width: 100px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 14px 12px;
            text-align: center;
            transition: background var(--transition), transform var(--transition);
            cursor: default;
        }
        .kaiyun-tier-item:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-2px);
        }
        .kaiyun-tier-item .tier-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 4px;
        }
        .kaiyun-tier-item .tier-price {
            font-size: 13px;
            color: var(--accent);
            font-weight: 600;
        }
        @media (max-width: 1023px) {
            .kaiyun-hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .kaiyun-hero-right {
                max-width: 480px;
            }
            .kaiyun-hero-left h1 {
                font-size: 32px;
            }
        }
        @media (max-width: 639px) {
            .kaiyun-hero-membership {
                padding: 48px 0;
            }
            .kaiyun-hero-left h1 {
                font-size: 26px;
            }
            .kaiyun-hero-left .kaiyun-hero-subtitle {
                font-size: 15px;
            }
            .kaiyun-hero-trust {
                gap: 14px;
                flex-direction: column;
            }
            .kaiyun-hero-right {
                padding: 20px 16px;
            }
            .kaiyun-progress-ring {
                width: 110px;
                height: 110px;
            }
            .kaiyun-progress-ring .ring-number {
                font-size: 26px;
            }
        }
        /* Section Common */
        .kaiyun-section {
            padding: var(--section-gap-desktop) 0;
        }
        .kaiyun-section-alt {
            background: var(--primary-light);
        }
        .kaiyun-section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px 0;
            line-height: 1.4;
        }
        .kaiyun-section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0 0 40px 0;
            max-width: 600px;
            line-height: 1.7;
        }
        .kaiyun-section-header {
            margin-bottom: 36px;
        }
        .kaiyun-section-header.center {
            text-align: center;
        }
        .kaiyun-section-header.center .kaiyun-section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 639px) {
            .kaiyun-section {
                padding: var(--section-gap-mobile) 0;
            }
            .kaiyun-section-title {
                font-size: 22px;
            }
            .kaiyun-section-subtitle {
                font-size: 15px;
                margin-bottom: 24px;
            }
        }
        /* Pain Points - 非对称卡片 */
        .kaiyun-pain-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .kaiyun-pain-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }
        .kaiyun-pain-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .kaiyun-pain-card:nth-child(2) {
            margin-top: 40px;
        }
        .kaiyun-pain-card:nth-child(3) {
            margin-top: -20px;
        }
        .kaiyun-pain-card:nth-child(4) {
            margin-top: 24px;
        }
        .kaiyun-pain-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .kaiyun-pain-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px 0;
        }
        .kaiyun-pain-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        @media (max-width: 767px) {
            .kaiyun-pain-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .kaiyun-pain-card:nth-child(2),
            .kaiyun-pain-card:nth-child(3),
            .kaiyun-pain-card:nth-child(4) {
                margin-top: 0;
            }
            .kaiyun-pain-card {
                padding: 20px 18px;
                flex-direction: column;
                gap: 12px;
            }
        }
        /* Solution Steps */
        .kaiyun-solution-steps {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 50px;
        }
        .kaiyun-solution-steps::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-strong);
        }
        .kaiyun-solution-step {
            position: relative;
            margin-bottom: 28px;
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }
        .kaiyun-solution-step:last-child {
            margin-bottom: 0;
        }
        .kaiyun-step-number {
            position: absolute;
            left: -50px;
            top: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
            z-index: 1;
        }
        .kaiyun-step-content {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            flex: 1;
            transition: box-shadow var(--transition);
        }
        .kaiyun-step-content:hover {
            box-shadow: var(--shadow-md);
        }
        .kaiyun-step-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px 0;
        }
        .kaiyun-step-content p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        @media (max-width: 639px) {
            .kaiyun-solution-steps {
                padding-left: 40px;
            }
            .kaiyun-solution-steps::before {
                left: 18px;
            }
            .kaiyun-step-number {
                left: -40px;
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .kaiyun-step-content {
                padding: 18px 16px;
            }
        }
        /* Results / Stats */
        .kaiyun-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 32px;
        }
        .kaiyun-stat-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .kaiyun-stat-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .kaiyun-stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }
        .kaiyun-stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        @media (max-width: 767px) {
            .kaiyun-stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .kaiyun-stat-number {
                font-size: 26px;
            }
        }
        /* Testimonials */
        .kaiyun-testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .kaiyun-testimonial-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .kaiyun-testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .kaiyun-testimonial-stars {
            color: var(--accent);
            font-size: 14px;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .kaiyun-testimonial-quote {
            font-size: 15px;
            color: var(--text);
            margin: 0 0 16px 0;
            line-height: 1.7;
            font-style: italic;
            position: relative;
            padding-left: 18px;
            border-left: 3px solid var(--primary-light);
        }
        .kaiyun-testimonial-author {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .kaiyun-testimonial-author i {
            color: var(--primary);
            font-size: 18px;
        }
        @media (max-width: 1023px) {
            .kaiyun-testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 639px) {
            .kaiyun-testimonial-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-testimonial-card {
                padding: 20px 18px;
            }
        }
        /* CTA Section */
        .kaiyun-cta-banner {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: var(--white);
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .kaiyun-cta-banner::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -30px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }
        .kaiyun-cta-banner h3 {
            font-size: 26px;
            font-weight: 700;
            margin: 0 0 8px 0;
            color: var(--white);
            position: relative;
            z-index: 1;
        }
        .kaiyun-cta-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin: 0;
            position: relative;
            z-index: 1;
        }
        .kaiyun-cta-banner .kaiyun-cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 767px) {
            .kaiyun-cta-banner {
                grid-template-columns: 1fr;
                padding: 32px 24px;
                gap: 20px;
            }
            .kaiyun-cta-banner h3 {
                font-size: 22px;
            }
        }
        /* FAQ */
        .kaiyun-faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .kaiyun-faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .kaiyun-faq-item:hover {
            border-color: var(--border-strong);
        }
        .kaiyun-faq-item.open {
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .kaiyun-faq-question {
            width: 100%;
            background: var(--white);
            border: none;
            padding: 18px 20px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition);
            border-radius: 0;
        }
        .kaiyun-faq-question:hover {
            color: var(--primary);
        }
        .kaiyun-faq-item.open .kaiyun-faq-question {
            color: var(--primary);
        }
        .kaiyun-faq-question .faq-toggle-icon {
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
            color: var(--text-muted);
        }
        .kaiyun-faq-item.open .faq-toggle-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .kaiyun-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            background: var(--bg);
        }
        .kaiyun-faq-item.open .kaiyun-faq-answer {
            max-height: 500px;
            padding: 16px 20px 20px;
        }
        .kaiyun-faq-answer p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        /* Footer */
        .kaiyun-footer {
            background: var(--primary);
            color: var(--primary-light);
            padding: 60px 0 24px;
            margin-top: 0;
        }
        .kaiyun-footer-content {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .kaiyun-footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-top: 14px;
        }
        .kaiyun-footer .kaiyun-logo a {
            color: var(--white);
        }
        .kaiyun-footer .kaiyun-logo a:hover {
            color: var(--primary-light);
        }
        .kaiyun-footer .kaiyun-logo-icon {
            background: rgba(255, 255, 255, 0.2);
        }
        .kaiyun-footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--white);
            margin: 0 0 16px 0;
        }
        .kaiyun-footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .kaiyun-footer-col ul li {
            margin-bottom: 10px;
        }
        .kaiyun-footer-col ul li a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            transition: color var(--transition);
        }
        .kaiyun-footer-col ul li a:hover {
            color: var(--white);
            text-decoration: underline;
        }
        .kaiyun-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .kaiyun-footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
        }
        .kaiyun-footer-links a:hover {
            color: var(--white);
            text-decoration: underline;
        }
        @media (max-width: 1023px) {
            .kaiyun-footer-content {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 639px) {
            .kaiyun-footer {
                padding: 40px 0 20px;
            }
            .kaiyun-footer-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .kaiyun-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        /* Responsive utility */
        .kaiyun-hide-mobile {
            display: block;
        }
        @media (max-width: 639px) {
            .kaiyun-hide-mobile {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #0B6E5E;
        --primary-dark: #094F45;
        --primary-light: #E6F3F0;
        --accent: #D97732;
        --accent-dark: #B86025;
        --bg: #FBFDFC;
        --text: #1C2B28;
        --text-muted: #5D6F69;
        --border: #E6F3F0;
        --border-strong: #DCE8E4;
        --white: #FFFFFF;
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 16px;
        --radius-xl: 24px;
        --radius-pill: 50px;
        --shadow-sm: 0 2px 8px rgba(11, 110, 94, 0.06);
        --shadow-md: 0 6px 18px rgba(11, 110, 94, 0.06);
        --shadow-lg: 0 10px 28px rgba(11, 110, 94, 0.12);
        --shadow-xl: 0 16px 40px rgba(11, 110, 94, 0.15);
        --transition: 0.25s ease;
        --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        --section-gap-desktop: 80px;
        --section-gap-mobile: 40px;
        --container-max: 1200px;
        --gutter-desktop: 24px;
        --gutter-mobile: 16px;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        margin: 0;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition), opacity var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button, input, textarea, select {
        font-family: var(--font-stack);
    }
    button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
        outline: 3px solid rgba(11, 110, 94, 0.3);
        outline-offset: 2px;
    }
    .kaiyun-container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding-left: var(--gutter-desktop);
        padding-right: var(--gutter-desktop);
    }
    @media (max-width: 639px) {
        .kaiyun-container {
            padding-left: var(--gutter-mobile);
            padding-right: var(--gutter-mobile);
        }
    }
    .kaiyun-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 2px 10px rgba(11, 110, 94, 0.06);
    }
    .kaiyun-header .top-bar {
        background: transparent;
        padding: 0;
        max-width: var(--container-max);
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        padding: 0 var(--gutter-desktop);
        min-height: 72px;
    }
    .kaiyun-header .top-bar,
    .kaiyun-header .top-bar ul {
        background: transparent;
    }
    .kaiyun-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 700;
        font-size: 20px;
        color: var(--primary);
        letter-spacing: 0.5px;
        white-space: nowrap;
    }
    .kaiyun-logo a {
        color: var(--primary);
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .kaiyun-logo a:hover {
        color: var(--primary-dark);
    }
    .kaiyun-logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--white);
        font-size: 16px;
        flex-shrink: 0;
    }
    .kaiyun-nav-links {
        display: flex;
        align-items: center;
        gap: 8px;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .kaiyun-nav-links li {
        margin: 0;
    }
    .kaiyun-nav-links a {
        display: inline-block;
        padding: 10px 16px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text);
        border-radius: var(--radius-pill);
        position: relative;
        transition: color var(--transition), background var(--transition);
        white-space: nowrap;
    }
    .kaiyun-nav-links a:hover {
        color: var(--primary);
        background: var(--primary-light);
    }
    .kaiyun-nav-links a.active {
        color: var(--primary);
        background: var(--primary-light);
        font-weight: 600;
    }
    .kaiyun-nav-links a.active::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 24px;
        height: 3px;
        border-radius: 2px;
        background: var(--primary);
    }
    .kaiyun-nav-cta {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .kaiyun-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        border-radius: var(--radius-pill);
        border: none;
        cursor: pointer;
        transition: all var(--transition);
        text-align: center;
        line-height: 1.4;
        white-space: nowrap;
    }
    .kaiyun-btn-primary {
        background: var(--primary);
        color: var(--white);
    }
    .kaiyun-btn-primary:hover {
        background: var(--primary-dark);
        color: var(--white);
        transform: scale(0.97);
        box-shadow: 0 4px 12px rgba(11, 110, 94, 0.25);
    }
    .kaiyun-btn-accent {
        background: var(--accent);
        color: var(--white);
    }
    .kaiyun-btn-accent:hover {
        background: var(--accent-dark);
        color: var(--white);
        transform: scale(0.97);
        box-shadow: 0 4px 12px rgba(217, 119, 50, 0.25);
    }
    .kaiyun-btn-outline {
        background: transparent;
        border: 1px solid var(--primary);
        color: var(--primary);
    }
    .kaiyun-btn-outline:hover {
        background: var(--primary-light);
        border-color: var(--primary-dark);
        color: var(--primary-dark);
    }
    .kaiyun-btn-sm {
        padding: 10px 20px;
        font-size: 14px;
    }
    .kaiyun-btn-lg {
        padding: 14px 32px;
        font-size: 16px;
    }
    .kaiyun-hamburger {
        display: none;
        background: none;
        border: none;
        font-size: 24px;
        color: var(--primary);
        cursor: pointer;
        padding: 8px;
        border-radius: var(--radius-sm);
        transition: background var(--transition);
    }
    .kaiyun-hamburger:hover {
        background: var(--primary-light);
    }
    .kaiyun-hamburger[aria-expanded="true"] {
        background: var(--primary-light);
    }
    .kaiyun-mobile-cta {
        display: none;
    }
    @media (max-width: 1023px) {
        .kaiyun-header .top-bar {
            padding: 0 16px;
            min-height: 64px;
        }
        .kaiyun-hamburger {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
        }
        .kaiyun-nav-links {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--white);
            flex-direction: column;
            align-items: stretch;
            gap: 0;
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            max-height: 70vh;
            overflow-y: auto;
        }
        .kaiyun-nav-links.is-open {
            display: flex;
        }
        .kaiyun-nav-links li {
            width: 100%;
        }
        .kaiyun-nav-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 14px 16px;
            font-size: 16px;
            border-radius: var(--radius-sm);
            border-bottom: 1px solid var(--border);
        }
        .kaiyun-nav-links a.active::after {
            display: none;
        }
        .kaiyun-nav-links a.active {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
        }
        .kaiyun-nav-cta {
            display: none;
        }
        .kaiyun-mobile-cta {
            display: flex;
            padding: 8px 0;
            border-top: 1px solid var(--border);
            margin-top: 8px;
        }
        .kaiyun-mobile-cta .kaiyun-btn {
            width: 100%;
        }
    }
    @media (max-width: 639px) {
        .kaiyun-logo {
            font-size: 17px;
        }
        .kaiyun-logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }
        .kaiyun-header .top-bar {
            min-height: 56px;
        }
    }
    .kaiyun-page-hero {
        position: relative;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        min-height: 420px;
        display: flex;
        align-items: center;
        padding: 60px 0;
    }
    .kaiyun-page-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11,110,94,0.88) 0%, rgba(28,43,40,0.65) 100%);
    }
    .kaiyun-page-hero .kaiyun-container {
        position: relative;
        z-index: 1;
    }
    .kaiyun-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        list-style: none;
        margin: 0 0 20px;
        padding: 0;
        font-size: 14px;
        color: rgba(230,243,240,0.85);
        flex-wrap: wrap;
    }
    .kaiyun-breadcrumb li {
        margin: 0;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .kaiyun-breadcrumb li + li::before {
        content: '/';
        color: rgba(230,243,240,0.6);
        margin-right: 8px;
    }
    .kaiyun-breadcrumb a {
        color: rgba(230,243,240,0.9);
        transition: color var(--transition);
    }
    .kaiyun-breadcrumb a:hover {
        color: #fff;
    }
    .kaiyun-breadcrumb .current {
        color: #fff;
        font-weight: 600;
    }
    .kaiyun-page-hero h1 {
        font-size: 40px;
        font-weight: 700;
        line-height: 1.3;
        color: #fff;
        margin: 0 0 16px;
        letter-spacing: 0.5px;
    }
    .kaiyun-page-hero .kaiyun-hero-sub {
        font-size: 18px;
        line-height: 1.7;
        color: var(--primary-light);
        max-width: 680px;
        margin: 0 0 28px;
    }
    .kaiyun-page-hero .kaiyun-hero-actions {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
    }
    .kaiyun-page-hero .kaiyun-hero-actions .kaiyun-btn-outline {
        border-color: rgba(255,255,255,0.7);
        color: #fff;
        background: transparent;
    }
    .kaiyun-page-hero .kaiyun-hero-actions .kaiyun-btn-outline:hover {
        background: rgba(255,255,255,0.15);
        border-color: #fff;
        color: #fff;
    }
    @media (max-width: 767px) {
        .kaiyun-page-hero {
            min-height: 320px;
            padding: 40px 0;
        }
        .kaiyun-page-hero h1 {
            font-size: 28px;
        }
        .kaiyun-page-hero .kaiyun-hero-sub {
            font-size: 16px;
        }
    }
    .kaiyun-section {
        padding: var(--section-gap-desktop) 0;
    }
    @media (max-width: 639px) {
        .kaiyun-section {
            padding: var(--section-gap-mobile) 0;
        }
    }
    .kaiyun-section-title {
        font-size: 30px;
        font-weight: 700;
        line-height: 1.4;
        color: var(--text);
        margin: 0 0 12px;
    }
    .kaiyun-section-sub {
        font-size: 16px;
        color: var(--text-muted);
        margin: 0 0 32px;
        max-width: 640px;
        line-height: 1.7;
    }
    .kaiyun-stats-row {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        margin-bottom: 40px;
    }
    @media (max-width: 1023px) {
        .kaiyun-stats-row {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
    }
    @media (max-width: 639px) {
        .kaiyun-stats-row {
            grid-template-columns: 1fr;
        }
    }
    .kaiyun-stat-card {
        background: var(--white);
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        text-align: center;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
    }
    .kaiyun-stat-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
    }
    .kaiyun-stat-num {
        font-size: 38px;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.2;
        margin-bottom: 8px;
    }
    .kaiyun-stat-label {
        font-size: 14px;
        color: var(--text-muted);
        font-weight: 500;
    }
    .kaiyun-filter-bar {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
        margin-bottom: 32px;
        padding: 12px 16px;
        background: var(--white);
        border-radius: var(--radius-md);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
    }
    .kaiyun-filter-label {
        font-size: 14px;
        font-weight: 600;
        color: var(--text);
        white-space: nowrap;
    }
    .kaiyun-filter-pill {
        padding: 8px 18px;
        font-size: 13px;
        font-weight: 500;
        border-radius: var(--radius-pill);
        border: 1px solid var(--border-strong);
        background: var(--white);
        color: var(--text-muted);
        cursor: pointer;
        transition: all var(--transition);
        white-space: nowrap;
    }
    .kaiyun-filter-pill:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: var(--primary-light);
    }
    .kaiyun-filter-pill.is-active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }
    .kaiyun-card-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-bottom: 40px;
    }
    @media (max-width: 1023px) {
        .kaiyun-card-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
    }
    @media (max-width: 639px) {
        .kaiyun-card-grid {
            grid-template-columns: 1fr;
        }
    }
    .kaiyun-event-card {
        background: var(--white);
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        transition: all var(--transition);
        cursor: pointer;
        display: flex;
        flex-direction: column;
    }
    .kaiyun-event-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-4px);
    }
    .kaiyun-event-card-img {
        position: relative;
        aspect-ratio: 16/9;
        background: var(--primary-light);
        overflow: hidden;
    }
    .kaiyun-event-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .kaiyun-event-card:hover .kaiyun-event-card-img img {
        transform: scale(1.05);
    }
    .kaiyun-event-card-img::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to bottom, transparent 60%, rgba(11,110,94,0.4));
        pointer-events: none;
    }
    .kaiyun-event-card-body {
        padding: 20px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .kaiyun-event-card-title {
        font-size: 20px;
        font-weight: 700;
        color: var(--text);
        margin: 0 0 8px;
        line-height: 1.4;
    }
    .kaiyun-event-card-desc {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.6;
        margin: 0 0 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        flex: 1;
    }
    .kaiyun-event-card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        flex-wrap: wrap;
        padding-top: 12px;
        border-top: 1px solid var(--border);
    }
    .kaiyun-event-card-tags {
        display: flex;
        gap: 6px;
        flex-wrap: wrap;
    }
    .kaiyun-tag {
        display: inline-flex;
        align-items: center;
        padding: 4px 12px;
        font-size: 12px;
        font-weight: 600;
        border-radius: var(--radius-pill);
        background: var(--primary-light);
        color: var(--primary);
        line-height: 1.4;
    }
    .kaiyun-tag-accent {
        background: rgba(217,119,50,0.12);
        color: var(--accent-dark);
    }
    .kaiyun-event-card-date {
        font-size: 13px;
        color: var(--text-muted);
        font-weight: 500;
        white-space: nowrap;
    }
    .kaiyun-pagination {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .kaiyun-pagination li {
        margin: 0;
    }
    .kaiyun-pagination a,
    .kaiyun-pagination span {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: var(--radius-sm);
        font-size: 14px;
        font-weight: 600;
        background: var(--white);
        border: 1px solid var(--border-strong);
        color: var(--text);
        transition: all var(--transition);
    }
    .kaiyun-pagination a:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: var(--primary-light);
    }
    .kaiyun-pagination .current {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }
    .kaiyun-pagination .disabled {
        opacity: 0.4;
        pointer-events: none;
    }
    .kaiyun-feature-split {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        align-items: center;
    }
    @media (max-width: 1023px) {
        .kaiyun-feature-split {
            grid-template-columns: 1fr;
            gap: 24px;
        }
    }
    .kaiyun-feature-img {
        border-radius: var(--radius-xl);
        overflow: hidden;
        aspect-ratio: 4/3;
        box-shadow: var(--shadow-lg);
    }
    .kaiyun-feature-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .kaiyun-feature-list {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .kaiyun-feature-list li {
        display: flex;
        align-items: flex-start;
        gap: 14px;
        padding: 16px;
        background: var(--white);
        border-radius: var(--radius-md);
        border: 1px solid var(--border);
        transition: all var(--transition);
    }
    .kaiyun-feature-list li:hover {
        box-shadow: var(--shadow-md);
        border-color: var(--border-strong);
    }
    .kaiyun-feature-list .kaiyun-feature-icon {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--primary-light);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 18px;
        flex-shrink: 0;
    }
    .kaiyun-feature-list h4 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text);
        margin: 0 0 4px;
    }
    .kaiyun-feature-list p {
        font-size: 14px;
        color: var(--text-muted);
        margin: 0;
        line-height: 1.6;
    }
    .kaiyun-steps {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        counter-reset: step;
    }
    @media (max-width: 1023px) {
        .kaiyun-steps {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
    }
    @media (max-width: 639px) {
        .kaiyun-steps {
            grid-template-columns: 1fr;
        }
    }
    .kaiyun-step {
        background: var(--white);
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        position: relative;
        transition: all var(--transition);
    }
    .kaiyun-step:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
    }
    .kaiyun-step-num {
        font-size: 48px;
        font-weight: 700;
        color: var(--primary-light);
        line-height: 1;
        margin-bottom: 16px;
        display: block;
    }
    .kaiyun-step h4 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text);
        margin: 0 0 8px;
    }
    .kaiyun-step p {
        font-size: 14px;
        color: var(--text-muted);
        margin: 0;
        line-height: 1.6;
    }
    .kaiyun-testimonial-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    @media (max-width: 1023px) {
        .kaiyun-testimonial-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
    }
    .kaiyun-testimonial-card {
        background: var(--white);
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-md);
    }
    .kaiyun-testimonial-stars {
        color: var(--accent);
        font-size: 14px;
        margin-bottom: 12px;
    }
    .kaiyun-testimonial-quote {
        font-size: 15px;
        color: var(--text);
        line-height: 1.7;
        margin: 0 0 16px;
        position: relative;
        padding-left: 16px;
        border-left: 3px solid var(--primary-light);
    }
    .kaiyun-testimonial-author {
        font-size: 14px;
        font-weight: 600;
        color: var(--text);
    }
    .kaiyun-testimonial-role {
        font-size: 13px;
        color: var(--text-muted);
        font-weight: 400;
    }
    .kaiyun-cta-banner {
        background: var(--primary-light);
        border-radius: var(--radius-xl);
        padding: 48px 40px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        flex-wrap: wrap;
    }
    .kaiyun-cta-banner h3 {
        font-size: 24px;
        font-weight: 700;
        color: var(--text);
        margin: 0 0 8px;
    }
    .kaiyun-cta-banner p {
        font-size: 15px;
        color: var(--text-muted);
        margin: 0;
        max-width: 440px;
        line-height: 1.6;
    }
    .kaiyun-cta-banner .kaiyun-btn {
        flex-shrink: 0;
    }
    @media (max-width: 767px) {
        .kaiyun-cta-banner {
            padding: 28px 20px;
            flex-direction: column;
            align-items: flex-start;
        }
        .kaiyun-cta-banner .kaiyun-btn {
            width: 100%;
        }
    }
    .kaiyun-accordion {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .kaiyun-accordion-item {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: all var(--transition);
    }
    .kaiyun-accordion-item:hover {
        border-color: var(--border-strong);
    }
    .kaiyun-accordion-title {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        padding: 18px 20px;
        font-size: 17px;
        font-weight: 600;
        color: var(--text);
        cursor: pointer;
        border: none;
        background: none;
        width: 100%;
        text-align: left;
        transition: color var(--transition);
        position: relative;
    }
    .kaiyun-accordion-title:hover {
        color: var(--primary);
    }
    .kaiyun-accordion-title .kaiyun-accordion-icon {
        font-size: 14px;
        color: var(--text-muted);
        transition: transform var(--transition);
        flex-shrink: 0;
    }
    .kaiyun-accordion-item.is-open .kaiyun-accordion-title {
        color: var(--primary);
        border-left: 4px solid var(--primary);
        padding-left: 16px;
    }
    .kaiyun-accordion-item.is-open .kaiyun-accordion-icon {
        transform: rotate(180deg);
        color: var(--primary);
    }
    .kaiyun-accordion-content {
        display: none;
        padding: 0 20px 20px;
        font-size: 15px;
        color: var(--text-muted);
        line-height: 1.7;
        background: var(--bg);
        border-top: 1px solid var(--border);
        padding-top: 16px;
    }
    .kaiyun-accordion-item.is-open .kaiyun-accordion-content {
        display: block;
    }
    .kaiyun-footer {
        background: var(--primary);
        color: var(--primary-light);
        padding: 60px 0 20px;
        margin-top: 0;
    }
    .kaiyun-footer a {
        color: var(--primary-light);
        transition: color var(--transition);
    }
    .kaiyun-footer a:hover {
        color: #fff;
        text-decoration: underline;
    }
    .kaiyun-footer-content {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 32px;
        margin-bottom: 40px;
    }
    @media (max-width: 1023px) {
        .kaiyun-footer-content {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
    }
    @media (max-width: 639px) {
        .kaiyun-footer-content {
            grid-template-columns: 1fr;
            gap: 20px;
        }
    }
    .kaiyun-footer-brand p {
        font-size: 14px;
        line-height: 1.7;
        color: rgba(230,243,240,0.8);
        margin: 16px 0 0;
        max-width: 320px;
    }
    .kaiyun-footer-brand .kaiyun-logo a {
        color: #fff;
    }
    .kaiyun-footer-brand .kaiyun-logo-icon {
        background: rgba(255,255,255,0.2);
    }
    .kaiyun-footer-col h4 {
        font-size: 16px;
        font-weight: 600;
        color: #fff;
        margin: 0 0 16px;
    }
    .kaiyun-footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .kaiyun-footer-col li {
        margin: 0;
    }
    .kaiyun-footer-col a {
        font-size: 14px;
        color: rgba(230,243,240,0.75);
    }
    .kaiyun-footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.15);
        padding-top: 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        flex-wrap: wrap;
    }
    .kaiyun-footer-bottom p {
        font-size: 13px;
        color: rgba(230,243,240,0.65);
        margin: 0;
    }
    .kaiyun-footer-links {
        display: flex;
        gap: 16px;
        align-items: center;
        font-size: 13px;
    }
    .kaiyun-footer-links a {
        color: rgba(230,243,240,0.7);
    }
    .kaiyun-footer-links a:hover {
        color: #fff;
    }
    .kaiyun-footer-beian {
        margin-top: 12px;
        font-size: 12px;
        color: rgba(230,243,240,0.55);
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
    }
    .kaiyun-footer-beian p {
        margin: 0;
    }
    @media (max-width: 639px) {
        .kaiyun-footer {
            padding: 40px 0 16px;
        }
        .kaiyun-footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
        .kaiyun-footer-beian {
            flex-direction: column;
            gap: 8px;
        }
    }

/* roulang page: category3 */
:root {
            --primary: #0B6E5E;
            --primary-dark: #094F45;
            --primary-light: #E6F3F0;
            --accent: #D97732;
            --accent-dark: #B86025;
            --bg: #FBFDFC;
            --text: #1C2B28;
            --text-muted: #5D6F69;
            --border: #E6F3F0;
            --border-strong: #DCE8E4;
            --white: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-pill: 50px;
            --shadow-sm: 0 2px 8px rgba(11, 110, 94, 0.06);
            --shadow-md: 0 6px 18px rgba(11, 110, 94, 0.06);
            --shadow-lg: 0 10px 28px rgba(11, 110, 94, 0.12);
            --shadow-xl: 0 16px 40px rgba(11, 110, 94, 0.15);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 40px;
            --container-max: 1200px;
            --gutter-desktop: 24px;
            --gutter-mobile: 16px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), opacity var(--transition), background var(--transition), box-shadow var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button, input, textarea, select {
            font-family: var(--font-stack);
        }

        button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
            outline: 3px solid rgba(11, 110, 94, 0.3);
            outline-offset: 2px;
        }

        .kaiyun-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--gutter-desktop);
            padding-right: var(--gutter-desktop);
        }

        /* Header / Navigation */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(11, 110, 94, 0.06);
        }

        .kaiyun-header .top-bar {
            background: transparent;
            padding: 0;
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0 var(--gutter-desktop);
            min-height: 72px;
        }

        .kaiyun-header .top-bar, .kaiyun-header .top-bar ul {
            background: transparent;
        }

        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .kaiyun-logo a {
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .kaiyun-logo a:hover {
            color: var(--primary-dark);
        }

        .kaiyun-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 16px;
            flex-shrink: 0;
        }

        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-nav-links li {
            margin: 0;
        }

        .kaiyun-nav-links a {
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-pill);
            position: relative;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .kaiyun-nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .kaiyun-nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .kaiyun-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }

        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }

        .kaiyun-btn-primary {
            background: var(--primary);
            color: var(--white);
        }

        .kaiyun-btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(11, 110, 94, 0.25);
            transform: scale(0.97);
        }

        .kaiyun-btn-accent {
            background: var(--accent);
            color: var(--white);
        }

        .kaiyun-btn-accent:hover {
            background: var(--accent-dark);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(217, 119, 50, 0.3);
            transform: scale(0.97);
        }

        .kaiyun-btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .kaiyun-btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }

        .kaiyun-btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .kaiyun-btn-lg {
            padding: 14px 36px;
            font-size: 16px;
        }

        .kaiyun-hamburger {
            display: none;
            background: transparent;
            border: none;
            color: var(--text);
            font-size: 22px;
            cursor: pointer;
            padding: 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .kaiyun-hamburger:hover {
            background: var(--primary-light);
        }

        /* Breadcrumb */
        .kaiyun-breadcrumb {
            padding: 20px 0 0;
        }

        .kaiyun-breadcrumb nav {
            font-size: 14px;
            color: var(--text-muted);
        }

        .kaiyun-breadcrumb nav a {
            color: var(--text-muted);
        }

        .kaiyun-breadcrumb nav a:hover {
            color: var(--primary);
        }

        .kaiyun-breadcrumb nav span {
            margin: 0 8px;
        }

        .kaiyun-breadcrumb nav .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* Page Header */
        .kaiyun-page-header {
            padding: 40px 0 30px;
        }

        .kaiyun-page-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 16px;
            color: var(--text);
        }

        .kaiyun-page-header p {
            font-size: 17px;
            color: var(--text-muted);
            margin: 0;
            max-width: 720px;
        }

        /* Category Banner */
        .kaiyun-category-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, #1C2B28 100%);
            border-radius: var(--radius-xl);
            padding: 48px;
            margin: 20px 0 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            position: relative;
            overflow: hidden;
        }

        .kaiyun-category-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(230, 243, 240, 0.08);
            pointer-events: none;
        }

        .kaiyun-category-banner::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(217, 119, 50, 0.15);
            pointer-events: none;
        }

        .kaiyun-category-banner-text {
            flex: 1;
            position: relative;
            z-index: 1;
        }

        .kaiyun-category-banner-text h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--white);
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .kaiyun-category-banner-text p {
            font-size: 16px;
            color: var(--primary-light);
            margin: 0 0 24px;
            max-width: 500px;
            line-height: 1.7;
        }

        .kaiyun-category-banner-image {
            flex-shrink: 0;
            width: 260px;
            position: relative;
            z-index: 1;
        }

        .kaiyun-category-banner-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
            border: 3px solid rgba(255, 255, 255, 0.3);
        }

        /* Section common */
        .kaiyun-section {
            padding: var(--section-gap-desktop) 0;
        }

        .kaiyun-section-alt {
            background: var(--primary-light);
        }

        .kaiyun-section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .kaiyun-section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0 0 40px;
            max-width: 680px;
        }

        /* Feature asymmetric */
        .kaiyun-feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .kaiyun-feature-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
        }

        .kaiyun-feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .kaiyun-feature-card.wide {
            grid-column: span 2;
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .kaiyun-feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .kaiyun-feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .kaiyun-feature-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .kaiyun-feature-card.wide .kaiyun-feature-content {
            flex: 1;
        }

        .kaiyun-feature-card.wide .kaiyun-feature-image {
            flex-shrink: 0;
            width: 220px;
        }

        .kaiyun-feature-card.wide .kaiyun-feature-image img {
            width: 100%;
            border-radius: var(--radius-md);
        }

        /* Steps */
        .kaiyun-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            counter-reset: step-counter;
            position: relative;
        }

        .kaiyun-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border-strong);
            z-index: 0;
        }

        .kaiyun-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }

        .kaiyun-step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            counter-increment: step-counter;
            position: relative;
            box-shadow: 0 4px 12px rgba(11, 110, 94, 0.2);
        }

        .kaiyun-step-number::after {
            content: counter(step-counter);
        }

        .kaiyun-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }

        .kaiyun-step p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Data Metrics */
        .kaiyun-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .kaiyun-metric-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .kaiyun-metric-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .kaiyun-metric-value {
            font-size: 36px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .kaiyun-metric-label {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            margin-bottom: 6px;
        }

        .kaiyun-metric-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* Scenario */
        .kaiyun-scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .kaiyun-scenario-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .kaiyun-scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .kaiyun-scenario-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
        }

        .kaiyun-scenario-card-body {
            padding: 20px;
        }

        .kaiyun-scenario-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }

        .kaiyun-scenario-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Testimonials */
        .kaiyun-testimonials {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .kaiyun-testimonial-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .kaiyun-testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .kaiyun-testimonial-stars {
            color: #F5A623;
            font-size: 14px;
            letter-spacing: 2px;
        }

        .kaiyun-testimonial-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
            font-style: italic;
            margin: 0;
        }

        .kaiyun-testimonial-author {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .kaiyun-testimonial-author img {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            object-fit: cover;
        }

        /* FAQ */
        .kaiyun-faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .kaiyun-faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .kaiyun-faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .kaiyun-faq-question {
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            user-select: none;
            transition: color var(--transition);
            border: none;
            background: transparent;
            width: 100%;
            text-align: left;
            gap: 16px;
        }

        .kaiyun-faq-question:hover {
            color: var(--primary);
        }

        .kaiyun-faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 14px;
        }

        .kaiyun-faq-item.open .kaiyun-faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .kaiyun-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .kaiyun-faq-item.open .kaiyun-faq-answer {
            max-height: 300px;
        }

        .kaiyun-faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .kaiyun-faq-item.open .kaiyun-faq-question {
            color: var(--primary);
        }

        .kaiyun-faq-item.open {
            border-left: 4px solid var(--primary);
        }

        /* CTA */
        .kaiyun-cta-section {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin-top: var(--section-gap-desktop);
        }

        .kaiyun-cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .kaiyun-cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--white);
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }

        .kaiyun-cta-section p {
            font-size: 16px;
            color: var(--primary-light);
            margin: 0 0 28px;
            position: relative;
            z-index: 1;
        }

        .kaiyun-cta-section .kaiyun-btn {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .kaiyun-footer {
            background: var(--primary-dark);
            color: var(--primary-light);
            padding: 60px 0 20px;
            margin-top: var(--section-gap-desktop);
        }

        .kaiyun-footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .kaiyun-footer-brand p {
            font-size: 14px;
            color: rgba(230, 243, 240, 0.75);
            line-height: 1.7;
            margin: 16px 0 0;
            max-width: 320px;
        }

        .kaiyun-footer .kaiyun-logo a {
            color: var(--white);
        }

        .kaiyun-footer .kaiyun-logo a:hover {
            color: var(--primary-light);
        }

        .kaiyun-footer .kaiyun-logo-icon {
            background: rgba(255, 255, 255, 0.2);
        }

        .kaiyun-footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--white);
            margin: 0 0 16px;
        }

        .kaiyun-footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-footer-col ul li {
            margin-bottom: 10px;
        }

        .kaiyun-footer-col ul a {
            color: rgba(230, 243, 240, 0.75);
            font-size: 14px;
            transition: color var(--transition);
        }

        .kaiyun-footer-col ul a:hover {
            color: var(--white);
            text-decoration: underline;
        }

        .kaiyun-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(230, 243, 240, 0.6);
        }

        .kaiyun-footer-bottom a {
            color: rgba(230, 243, 240, 0.6);
            font-size: 13px;
        }

        .kaiyun-footer-bottom a:hover {
            color: var(--white);
            text-decoration: underline;
        }

        .kaiyun-footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Mobile */
        @media (max-width: 1024px) {
            .kaiyun-feature-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .kaiyun-feature-card.wide {
                grid-column: span 1;
                flex-direction: column;
                text-align: left;
            }

            .kaiyun-feature-card.wide .kaiyun-feature-image {
                width: 100%;
            }

            .kaiyun-feature-card.wide .kaiyun-feature-image img {
                height: 200px;
                object-fit: cover;
            }

            .kaiyun-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .kaiyun-steps::before {
                display: none;
            }

            .kaiyun-metrics {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .kaiyun-scenario-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .kaiyun-testimonials {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .kaiyun-category-banner {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }

            .kaiyun-category-banner-text p {
                margin-left: auto;
                margin-right: auto;
            }

            .kaiyun-category-banner-image {
                width: 200px;
            }

            .kaiyun-footer-content {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .kaiyun-header .top-bar {
                padding: 0 var(--gutter-mobile);
                min-height: 60px;
                gap: 12px;
            }

            .kaiyun-hamburger {
                display: block;
            }

            .kaiyun-nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 16px 0;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
                gap: 4px;
                z-index: 99;
            }

            .kaiyun-nav-links.open {
                display: flex;
            }

            .kaiyun-nav-links a {
                width: 100%;
                text-align: center;
                padding: 12px 20px;
                font-size: 16px;
            }

            .kaiyun-nav-links a.active::after {
                display: none;
            }

            .kaiyun-nav-cta {
                display: none;
            }

            .kaiyun-nav-links .mobile-visible {
                display: block !important;
                padding: 8px 20px;
            }

            .kaiyun-page-header h1 {
                font-size: 28px;
            }

            .kaiyun-category-banner-text h2 {
                font-size: 24px;
            }

            .kaiyun-section {
                padding: var(--section-gap-mobile) 0;
            }

            .kaiyun-section-title {
                font-size: 22px;
            }

            .kaiyun-scenario-grid {
                grid-template-columns: 1fr;
            }

            .kaiyun-cta-section {
                padding: 40px 24px;
                margin-top: var(--section-gap-mobile);
            }

            .kaiyun-cta-section h2 {
                font-size: 22px;
            }

            .kaiyun-footer {
                padding: 40px 0 16px;
                margin-top: var(--section-gap-mobile);
            }

            .kaiyun-footer-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .kaiyun-footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .kaiyun-container {
                padding-left: var(--gutter-mobile);
                padding-right: var(--gutter-mobile);
            }

            .kaiyun-header .top-bar {
                padding: 0 12px;
            }

            .kaiyun-logo {
                font-size: 17px;
            }

            .kaiyun-metrics {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .kaiyun-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .kaiyun-category-banner {
                border-radius: var(--radius-lg);
                padding: 24px 16px;
            }

            .kaiyun-category-banner-image {
                width: 160px;
            }

            .kaiyun-cta-section {
                border-radius: var(--radius-lg);
            }

            .kaiyun-btn-lg {
                padding: 12px 24px;
                font-size: 15px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0B6E5E;
            --primary-dark: #094F45;
            --primary-light: #E6F3F0;
            --accent: #D97732;
            --accent-dark: #B86025;
            --bg: #FBFDFC;
            --text: #1C2B28;
            --text-muted: #5D6F69;
            --border: #E6F3F0;
            --border-strong: #DCE8E4;
            --white: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-pill: 50px;
            --shadow-sm: 0 2px 8px rgba(11, 110, 94, 0.06);
            --shadow-md: 0 6px 18px rgba(11, 110, 94, 0.06);
            --shadow-lg: 0 10px 28px rgba(11, 110, 94, 0.12);
            --shadow-xl: 0 16px 40px rgba(11, 110, 94, 0.15);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 40px;
            --container-max: 1200px;
            --gutter-desktop: 24px;
            --gutter-mobile: 16px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), opacity var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(11, 110, 94, 0.35);
            outline-offset: 2px;
        }

        .kaiyun-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--gutter-desktop);
            padding-right: var(--gutter-desktop);
        }

        /* Header */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(11, 110, 94, 0.06);
        }
        .kaiyun-header .top-bar {
            background: transparent;
            padding: 0;
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0 var(--gutter-desktop);
            min-height: 72px;
        }
        .kaiyun-header .top-bar,
        .kaiyun-header .top-bar ul {
            background: transparent;
        }
        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .kaiyun-logo a {
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .kaiyun-logo a:hover {
            color: var(--primary-dark);
        }
        .kaiyun-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 16px;
            flex-shrink: 0;
        }
        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .kaiyun-nav-links li {
            margin: 0;
        }
        .kaiyun-nav-links a {
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-pill);
            position: relative;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .kaiyun-nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .kaiyun-nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .kaiyun-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }
        .kaiyun-btn:hover {
            text-decoration: none;
        }
        .kaiyun-btn-primary {
            background: var(--primary);
            color: var(--white);
        }
        .kaiyun-btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: scale(0.97);
            box-shadow: 0 4px 12px rgba(11, 110, 94, 0.25);
        }
        .kaiyun-btn-accent {
            background: var(--accent);
            color: var(--white);
        }
        .kaiyun-btn-accent:hover {
            background: var(--accent-dark);
            color: var(--white);
            transform: scale(0.97);
            box-shadow: 0 4px 12px rgba(217, 119, 50, 0.25);
        }
        .kaiyun-btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .kaiyun-btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .kaiyun-btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }
        .kaiyun-btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }
        .kaiyun-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .kaiyun-hamburger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* Breadcrumb */
        .kaiyun-breadcrumb {
            padding: 20px 0 0;
            font-size: 14px;
            color: var(--text-muted);
        }
        .kaiyun-breadcrumb a {
            color: var(--text-muted);
        }
        .kaiyun-breadcrumb a:hover {
            color: var(--primary);
        }
        .kaiyun-breadcrumb .separator {
            margin: 0 8px;
            color: var(--border-strong);
        }

        /* Page Header */
        .kaiyun-page-header {
            padding: 32px 0 40px;
            background: linear-gradient(135deg, rgba(11, 110, 94, 0.04) 0%, rgba(230, 243, 240, 0.35) 100%);
            border-bottom: 1px solid var(--border);
            margin-bottom: var(--section-gap-desktop);
        }
        .kaiyun-page-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .kaiyun-page-header .kaiyun-page-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0;
            line-height: 1.7;
        }

        /* Filter Bar */
        .kaiyun-filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .kaiyun-filter-bar .kaiyun-btn-filter {
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-pill);
            border: 1px solid var(--border-strong);
            background: var(--white);
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition);
        }
        .kaiyun-filter-bar .kaiyun-btn-filter:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .kaiyun-filter-bar .kaiyun-btn-filter.active {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
            font-weight: 600;
        }
        .kaiyun-filter-count {
            font-size: 14px;
            color: var(--text-muted);
            margin-left: auto;
        }

        /* Cards Grid */
        .kaiyun-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 40px;
        }
        .kaiyun-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .kaiyun-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .kaiyun-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-light);
        }
        .kaiyun-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .kaiyun-card:hover .kaiyun-card-img img {
            transform: scale(1.05);
        }
        .kaiyun-card-img .kaiyun-card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: var(--white);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
        }
        .kaiyun-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .kaiyun-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
            line-height: 1.4;
        }
        .kaiyun-card-body h3 a {
            color: var(--text);
        }
        .kaiyun-card-body h3 a:hover {
            color: var(--primary);
        }
        .kaiyun-card-body .kaiyun-card-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .kaiyun-card-footer {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }
        .kaiyun-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            border-radius: var(--radius-pill);
            background: var(--primary-light);
            color: var(--primary);
        }
        .kaiyun-card-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-left: auto;
        }

        /* Pagination */
        .kaiyun-pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-bottom: var(--section-gap-desktop);
        }
        .kaiyun-pagination a,
        .kaiyun-pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            border: 1px solid var(--border-strong);
            background: var(--white);
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .kaiyun-pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .kaiyun-pagination .current {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
            font-weight: 600;
        }

        /* Section Common */
        .kaiyun-section {
            padding: var(--section-gap-desktop) 0;
        }
        .kaiyun-section-alt {
            background: var(--primary-light);
        }
        .kaiyun-section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.4;
        }
        .kaiyun-section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0 0 32px;
            max-width: 640px;
        }

        /* Advantage Section */
        .kaiyun-advantage-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .kaiyun-advantage-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .kaiyun-advantage-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .kaiyun-advantage-item .kaiyun-adv-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .kaiyun-advantage-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
        }
        .kaiyun-advantage-item p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* Process Section */
        .kaiyun-process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step-counter;
        }
        .kaiyun-process-step {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition);
        }
        .kaiyun-process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .kaiyun-process-step .kaiyun-step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            counter-increment: step-counter;
        }
        .kaiyun-process-step .kaiyun-step-number::before {
            content: counter(step-counter);
        }
        .kaiyun-process-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
        }
        .kaiyun-process-step p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Partner Tags */
        .kaiyun-partner-tags-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .kaiyun-partner-tag-item {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: all var(--transition);
        }
        .kaiyun-partner-tag-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .kaiyun-partner-tag-item .kaiyun-tag-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .kaiyun-partner-tag-item h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 4px;
        }
        .kaiyun-partner-tag-item p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* Testimonials */
        .kaiyun-testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .kaiyun-testimonial-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .kaiyun-testimonial-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .kaiyun-testimonial-item .kaiyun-testimonial-stars {
            color: var(--accent);
            font-size: 14px;
            margin-bottom: 12px;
        }
        .kaiyun-testimonial-item .kaiyun-testimonial-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
            margin: 0 0 16px;
            position: relative;
            padding-left: 16px;
            border-left: 3px solid var(--primary-light);
        }
        .kaiyun-testimonial-item .kaiyun-testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .kaiyun-testimonial-item .kaiyun-testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .kaiyun-testimonial-item .kaiyun-testimonial-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
        }
        .kaiyun-testimonial-item .kaiyun-testimonial-role {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* FAQ */
        .kaiyun-faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .kaiyun-faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .kaiyun-faq-item.active {
            border-left: 4px solid var(--primary);
        }
        .kaiyun-faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 20px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: all var(--transition);
            gap: 12px;
        }
        .kaiyun-faq-question:hover {
            color: var(--primary);
        }
        .kaiyun-faq-item.active .kaiyun-faq-question {
            color: var(--primary);
        }
        .kaiyun-faq-question .kaiyun-faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition);
            font-size: 14px;
        }
        .kaiyun-faq-item.active .kaiyun-faq-question .kaiyun-faq-icon {
            transform: rotate(180deg);
        }
        .kaiyun-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .kaiyun-faq-item.active .kaiyun-faq-answer {
            max-height: 300px;
        }
        .kaiyun-faq-answer p {
            margin: 0;
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            background: var(--bg);
        }

        /* CTA Banner */
        .kaiyun-cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            margin: 0 0 var(--section-gap-desktop);
        }
        .kaiyun-cta-banner h3 {
            font-size: 26px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--white);
        }
        .kaiyun-cta-banner p {
            font-size: 15px;
            margin: 0;
            color: #A9C5BC;
            max-width: 480px;
        }
        .kaiyun-cta-banner .kaiyun-btn-white {
            background: var(--white);
            color: var(--primary);
            font-weight: 700;
        }
        .kaiyun-cta-banner .kaiyun-btn-white:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
        }

        /* Footer */
        .kaiyun-footer {
            background: var(--primary-dark);
            color: #E6F3F0;
            padding: 60px 0 20px;
            margin-top: 0;
        }
        .kaiyun-footer .kaiyun-container {
            padding-left: var(--gutter-desktop);
            padding-right: var(--gutter-desktop);
        }
        .kaiyun-footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .kaiyun-footer-brand .kaiyun-logo {
            color: var(--white);
            margin-bottom: 12px;
        }
        .kaiyun-footer-brand .kaiyun-logo a {
            color: var(--white);
        }
        .kaiyun-footer-brand .kaiyun-logo a:hover {
            color: #A9C5BC;
        }
        .kaiyun-footer-brand p {
            font-size: 14px;
            color: #A9C5BC;
            line-height: 1.7;
            margin: 0;
        }
        .kaiyun-footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--white);
            margin: 0 0 16px;
        }
        .kaiyun-footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .kaiyun-footer-col ul li {
            margin-bottom: 8px;
        }
        .kaiyun-footer-col ul li a {
            color: #A9C5BC;
            font-size: 14px;
            transition: color var(--transition);
        }
        .kaiyun-footer-col ul li a:hover {
            color: var(--white);
            text-decoration: underline;
        }
        .kaiyun-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            font-size: 13px;
            color: #A9C5BC;
        }
        .kaiyun-footer-links {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .kaiyun-footer-links a {
            color: #A9C5BC;
            font-size: 13px;
        }
        .kaiyun-footer-links a:hover {
            color: var(--white);
            text-decoration: underline;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .kaiyun-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .kaiyun-process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .kaiyun-testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .kaiyun-partner-tags-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .kaiyun-footer-content {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .kaiyun-header .top-bar {
                padding: 0 var(--gutter-mobile);
                min-height: 64px;
            }
            .kaiyun-hamburger {
                display: block;
            }
            .kaiyun-nav-links {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                padding: 12px 0;
                gap: 4px;
                background: var(--white);
                border-top: 1px solid var(--border);
            }
            .kaiyun-nav-links.open {
                display: flex;
            }
            .kaiyun-nav-links li {
                width: 100%;
            }
            .kaiyun-nav-links li a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                white-space: normal;
            }
            .kaiyun-nav-links li a.active::after {
                display: none;
            }
            .kaiyun-nav-cta {
                display: none;
            }
            .kaiyun-nav-links .mobile-visible {
                display: block !important;
            }
            .kaiyun-nav-cta.mobile-visible {
                display: flex;
            }
            .kaiyun-lg-visible {
                display: none;
            }
            .kaiyun-container {
                padding-left: var(--gutter-mobile);
                padding-right: var(--gutter-mobile);
            }
            .kaiyun-page-header h1 {
                font-size: 26px;
            }
            .kaiyun-page-header {
                padding: 24px 0 28px;
                margin-bottom: var(--section-gap-mobile);
            }
            .kaiyun-cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .kaiyun-advantage-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-process-steps {
                grid-template-columns: 1fr;
            }
            .kaiyun-testimonials-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-partner-tags-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-filter-bar {
                gap: 8px;
            }
            .kaiyun-filter-count {
                margin-left: 0;
                width: 100%;
            }
            .kaiyun-cta-banner {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .kaiyun-cta-banner h3 {
                font-size: 22px;
            }
            .kaiyun-cta-banner p {
                text-align: center;
            }
            .kaiyun-footer-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .kaiyun-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .kaiyun-footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
            .kaiyun-pagination {
                flex-wrap: wrap;
            }
            .kaiyun-section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .kaiyun-page-header h1 {
                font-size: 22px;
            }
            .kaiyun-card-body h3 {
                font-size: 17px;
            }
            .kaiyun-btn-lg {
                padding: 14px 24px;
                font-size: 15px;
            }
            .kaiyun-cta-banner {
                padding: 24px 16px;
                border-radius: var(--radius-lg);
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0B6E5E;
            --primary-dark: #094F45;
            --primary-light: #E6F3F0;
            --accent: #D97732;
            --accent-dark: #B86025;
            --bg: #FBFDFC;
            --text: #1C2B28;
            --text-muted: #5D6F69;
            --border: #E6F3F0;
            --border-strong: #DCE8E4;
            --white: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-pill: 50px;
            --shadow-sm: 0 2px 8px rgba(11, 110, 94, 0.06);
            --shadow-md: 0 6px 18px rgba(11, 110, 94, 0.06);
            --shadow-lg: 0 10px 28px rgba(11, 110, 94, 0.12);
            --shadow-xl: 0 16px 40px rgba(11, 110, 94, 0.15);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 40px;
            --container-max: 1200px;
            --gutter-desktop: 24px;
            --gutter-mobile: 16px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), opacity var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(11, 110, 94, 0.3);
            outline-offset: 2px;
        }
        .kaiyun-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--gutter-desktop);
            padding-right: var(--gutter-desktop);
        }
        @media (max-width: 640px) {
            .kaiyun-container {
                padding-left: var(--gutter-mobile);
                padding-right: var(--gutter-mobile);
            }
        }
        /* Header / Navigation */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(11, 110, 94, 0.06);
        }
        .kaiyun-header .top-bar {
            background: transparent;
            padding: 0;
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0 var(--gutter-desktop);
            min-height: 72px;
        }
        .kaiyun-header .top-bar,
        .kaiyun-header .top-bar ul {
            background: transparent;
        }
        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .kaiyun-logo a {
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .kaiyun-logo a:hover {
            color: var(--primary-dark);
        }
        .kaiyun-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 16px;
            flex-shrink: 0;
        }
        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .kaiyun-nav-links li {
            margin: 0;
        }
        .kaiyun-nav-links a {
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-pill);
            position: relative;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .kaiyun-nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .kaiyun-nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .kaiyun-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }
        .kaiyun-btn:hover {
            text-decoration: none;
        }
        .kaiyun-btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }
        .kaiyun-btn-primary {
            background: var(--primary);
            color: var(--white);
        }
        .kaiyun-btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(11, 110, 94, 0.25);
            transform: scale(0.97);
        }
        .kaiyun-btn-accent {
            background: var(--accent);
            color: var(--white);
        }
        .kaiyun-btn-accent:hover {
            background: var(--accent-dark);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(217, 119, 50, 0.3);
            transform: scale(0.97);
        }
        .kaiyun-btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .kaiyun-btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary-dark);
        }
        .kaiyun-btn-outline-white {
            background: transparent;
            color: var(--white);
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        .kaiyun-btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--white);
            border-color: var(--white);
        }
        .kaiyun-hamburger {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 18px;
            color: var(--text);
            cursor: pointer;
            transition: all var(--transition);
        }
        .kaiyun-hamburger:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .kaiyun-header .top-bar {
                padding: 0 16px;
            }
            .kaiyun-nav-links a {
                padding: 8px 12px;
                font-size: 14px;
            }
        }
        @media (max-width: 768px) {
            .kaiyun-hamburger {
                display: block;
            }
            .kaiyun-nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border);
                max-height: calc(100vh - 72px);
                overflow-y: auto;
            }
            .kaiyun-nav-links.open {
                display: flex;
            }
            .kaiyun-nav-links a {
                padding: 14px 16px;
                border-radius: var(--radius-md);
                font-size: 16px;
            }
            .kaiyun-nav-links a.active::after {
                display: none;
            }
            .kaiyun-nav-cta.desktop-cta {
                display: none;
            }
            .kaiyun-nav-links .mobile-visible {
                display: block !important;
            }
            .mobile-visible a {
                background: var(--accent);
                color: var(--white);
                text-align: center;
                margin-top: 8px;
            }
            .mobile-visible a:hover {
                background: var(--accent-dark);
                color: var(--white);
            }
        }
        /* Breadcrumb */
        .kaiyun-breadcrumb {
            padding: 24px 0 0;
            font-size: 14px;
            color: var(--text-muted);
        }
        .kaiyun-breadcrumb a {
            color: var(--text-muted);
        }
        .kaiyun-breadcrumb a:hover {
            color: var(--primary);
        }
        .kaiyun-breadcrumb .separator {
            margin: 0 8px;
            color: var(--border-strong);
        }
        .kaiyun-breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        /* Category Hero */
        .kaiyun-category-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 110, 94, 0.88) 0%, rgba(28, 43, 40, 0.78) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-radius: var(--radius-xl);
            padding: 64px 56px;
            margin: 24px 0 48px;
            color: var(--white);
            overflow: hidden;
        }
        .kaiyun-category-hero::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(230, 243, 240, 0.08);
        }
        .kaiyun-category-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 20%;
            width: 150px;
            height: 150px;
            border-radius: 50%;
            background: rgba(217, 119, 50, 0.12);
        }
        .kaiyun-category-hero-inner {
            position: relative;
            z-index: 1;
            max-width: 700px;
        }
        .kaiyun-category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 16px;
            color: var(--white);
        }
        .kaiyun-category-hero p {
            font-size: 17px;
            color: var(--primary-light);
            margin: 0 0 28px;
            line-height: 1.7;
            max-width: 560px;
        }
        .kaiyun-category-hero .kaiyun-hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .kaiyun-category-hero {
                padding: 40px 24px;
                border-radius: var(--radius-lg);
                margin: 16px 0 32px;
            }
            .kaiyun-category-hero h1 {
                font-size: 28px;
            }
            .kaiyun-category-hero p {
                font-size: 15px;
            }
        }
        /* Section Base */
        .kaiyun-section {
            padding: 0 0 var(--section-gap-desktop);
        }
        .kaiyun-section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin: 0 0 12px;
        }
        .kaiyun-section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0 0 40px;
            max-width: 600px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .kaiyun-section {
                padding-bottom: var(--section-gap-mobile);
            }
            .kaiyun-section-title {
                font-size: 22px;
            }
            .kaiyun-section-subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }
        }
        /* Service Cards - Asymmetric */
        .kaiyun-service-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }
        .kaiyun-service-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .kaiyun-service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .kaiyun-service-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .kaiyun-service-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin: 0 0 10px;
            color: var(--text);
        }
        .kaiyun-service-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        .kaiyun-service-card .card-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            background: var(--primary-light);
            color: var(--primary);
        }
        .kaiyun-col-span-4 {
            grid-column: span 4;
        }
        .kaiyun-col-span-6 {
            grid-column: span 6;
        }
        .kaiyun-col-span-8 {
            grid-column: span 8;
        }
        .kaiyun-col-span-12 {
            grid-column: span 12;
        }
        @media (max-width: 1024px) {
            .kaiyun-service-grid {
                gap: 16px;
            }
            .kaiyun-col-span-4,
            .kaiyun-col-span-6,
            .kaiyun-col-span-8 {
                grid-column: span 6;
            }
        }
        @media (max-width: 640px) {
            .kaiyun-service-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .kaiyun-col-span-4,
            .kaiyun-col-span-6,
            .kaiyun-col-span-8,
            .kaiyun-col-span-12 {
                grid-column: span 1;
            }
        }
        /* Process Steps */
        .kaiyun-process {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .kaiyun-process-step {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }
        .kaiyun-process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .kaiyun-step-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 12px;
            letter-spacing: -1px;
        }
        .kaiyun-process-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }
        .kaiyun-process-step p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .kaiyun-process {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 640px) {
            .kaiyun-process {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }
        /* Data Stats */
        .kaiyun-stats-band {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            color: var(--white);
        }
        .kaiyun-stat-item {
            text-align: center;
        }
        .kaiyun-stat-number {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--white);
            margin-bottom: 6px;
        }
        .kaiyun-stat-number span {
            font-size: 20px;
            font-weight: 500;
            color: var(--primary-light);
            margin-left: 2px;
        }
        .kaiyun-stat-label {
            font-size: 14px;
            color: var(--primary-light);
            font-weight: 500;
        }
        @media (max-width: 1024px) {
            .kaiyun-stats-band {
                grid-template-columns: repeat(2, 1fr);
                padding: 36px 24px;
                gap: 24px;
            }
            .kaiyun-stat-number {
                font-size: 30px;
            }
        }
        @media (max-width: 640px) {
            .kaiyun-stats-band {
                grid-template-columns: 1fr;
                padding: 28px 16px;
                gap: 18px;
            }
            .kaiyun-stat-number {
                font-size: 26px;
            }
        }
        /* FAQ */
        .kaiyun-faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .kaiyun-faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .kaiyun-faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .kaiyun-faq-question {
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            gap: 16px;
            user-select: none;
            transition: color var(--transition);
        }
        .kaiyun-faq-question:hover {
            color: var(--primary);
        }
        .kaiyun-faq-item.active .kaiyun-faq-question {
            color: var(--primary);
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .kaiyun-faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary);
            transition: transform var(--transition);
        }
        .kaiyun-faq-item.active .kaiyun-faq-icon {
            transform: rotate(180deg);
        }
        .kaiyun-faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            background: var(--bg);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .kaiyun-faq-item.active .kaiyun-faq-answer {
            display: block;
        }
        /* CTA Banner */
        .kaiyun-cta-banner {
            background: linear-gradient(135deg, var(--primary-light) 0%, #D6EDE6 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .kaiyun-cta-banner::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(11, 110, 94, 0.06);
        }
        .kaiyun-cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }
        .kaiyun-cta-banner p {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0 auto 28px;
            max-width: 520px;
            position: relative;
            z-index: 1;
        }
        .kaiyun-cta-banner .kaiyun-btn {
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .kaiyun-cta-banner {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .kaiyun-cta-banner h2 {
                font-size: 22px;
            }
        }
        /* Info Panel */
        .kaiyun-info-panel {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            box-shadow: var(--shadow-md);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .kaiyun-info-panel-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 14px;
        }
        .kaiyun-info-panel-content p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0 0 16px;
        }
        .kaiyun-info-panel-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
        }
        .kaiyun-info-panel-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        @media (max-width: 768px) {
            .kaiyun-info-panel {
                grid-template-columns: 1fr;
                padding: 24px 18px;
                gap: 20px;
            }
            .kaiyun-info-panel-content h2 {
                font-size: 22px;
            }
            .kaiyun-info-panel-image img {
                height: 200px;
            }
        }
        /* Support Channel Cards */
        .kaiyun-channel-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .kaiyun-channel-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .kaiyun-channel-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }
        .kaiyun-channel-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin: 0 auto 14px;
        }
        .kaiyun-channel-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text);
        }
        .kaiyun-channel-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .kaiyun-channel-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 640px) {
            .kaiyun-channel-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }
        /* Tags */
        .kaiyun-tag {
            display: inline-block;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 500;
            border-radius: var(--radius-pill);
            background: var(--primary-light);
            color: var(--primary);
            margin: 0 6px 8px 0;
        }
        .kaiyun-tag:hover {
            background: var(--primary);
            color: var(--white);
        }
        /* Footer */
        .kaiyun-footer {
            background: var(--primary);
            color: var(--primary-light);
            padding: 60px 0 20px;
            margin-top: 0;
        }
        .kaiyun-footer a {
            color: var(--primary-light);
        }
        .kaiyun-footer a:hover {
            color: var(--white);
            text-decoration: underline;
        }
        .kaiyun-footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }
        .kaiyun-footer-brand .kaiyun-logo {
            color: var(--white);
            margin-bottom: 14px;
        }
        .kaiyun-footer-brand .kaiyun-logo a {
            color: var(--white);
            font-size: 20px;
        }
        .kaiyun-footer-brand p {
            font-size: 14px;
            color: #A9C5BC;
            margin: 0;
            line-height: 1.7;
            max-width: 320px;
        }
        .kaiyun-footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--white);
            margin: 0 0 14px;
        }
        .kaiyun-footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .kaiyun-footer-col ul li {
            margin-bottom: 8px;
        }
        .kaiyun-footer-col ul li a {
            font-size: 14px;
            color: #A9C5BC;
            transition: color var(--transition);
        }
        .kaiyun-footer-col ul li a:hover {
            color: var(--white);
        }
        .kaiyun-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            font-size: 13px;
            color: #A9C5BC;
        }
        .kaiyun-footer-bottom a {
            color: #A9C5BC;
            font-size: 13px;
        }
        .kaiyun-footer-bottom a:hover {
            color: var(--white);
        }
        .kaiyun-footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 1024px) {
            .kaiyun-footer-content {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .kaiyun-footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .kaiyun-footer {
                padding: 40px 0 16px;
            }
            .kaiyun-footer-content {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .kaiyun-footer-brand {
                grid-column: span 1;
            }
            .kaiyun-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .kaiyun-footer-links {
                justify-content: center;
            }
        }