/* roulang page: index */
:root {
            --primary: #0F5A4C;
            --primary-dark: #0A4238;
            --primary-light: #E7F0ED;
            --primary-faint: #F0F5F3;
            --accent: #E08D3C;
            --accent-dark: #C8792B;
            --bg: #F7F5F0;
            --bg-alt: #EFECE5;
            --card-bg: #FFFFFF;
            --border: #E5DFD4;
            --text: #1D2A27;
            --text-secondary: #5F6B67;
            --text-light: #A9BCB6;
            --success: #2F7D5D;
            --error: #C04A3A;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 10px rgba(15,90,76,0.05);
            --shadow-md: 0 4px 16px rgba(15,90,76,0.08);
            --shadow-lg: 0 8px 24px rgba(15,90,76,0.12);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK", sans-serif;
            --container: 1200px;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s, border-color 0.25s; }
        a:hover { color: var(--accent); text-decoration: underline; }
        ul, ol { list-style: none; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
        .section { padding: var(--section-padding); }
        .section-alt { background: var(--card-bg); }
        .section-tint { background: var(--primary-faint); }
        .section-warm { background: var(--bg-alt); }
        .section-dark { background: var(--primary); color: #F7F5F0; }
        .section-accent { background: var(--accent); color: #FFFFFF; }
        .section-title { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 12px; line-height: 1.3; }
        .section-subtitle { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; line-height: 1.7; max-width: 680px; }
        .section-title.light, .section-subtitle.light { color: #F7F5F0; }
        .section-title.accent-title { color: var(--primary); }
        .section-title .highlight { color: var(--accent); }
        .section-title .highlight-primary { color: var(--primary); }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
        .logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .logo-icon { width: 36px; height: 36px; background: var(--primary); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: #FFFFFF; font-weight: 700; font-size: 14px; position: relative; flex-shrink: 0; }
        .logo-icon::after { content: ''; position: absolute; bottom: -3px; right: -3px; width: 10px; height: 10px; background: var(--accent); border-radius: 50%; border: 2px solid #FFFFFF; }
        .logo-text { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }
        .logo-text:hover { color: var(--primary); text-decoration: none; }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            position: relative;
            transition: color 0.2s, background 0.2s;
        }
        .main-nav a:hover { color: var(--primary); background: var(--primary-faint); text-decoration: none; }
        .main-nav a.active { color: var(--primary); font-weight: 600; }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: var(--radius-pill);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
            white-space: nowrap;
        }
        .header-cta:hover { background: var(--accent-dark); color: #FFFFFF; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; border-radius: var(--radius-sm); }
        .hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: var(--radius-pill); transition: all 0.3s; }
        .hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .mobile-menu {
            position: fixed;
            top: 68px;
            left: 0;
            width: 100%;
            height: calc(100vh - 68px);
            background: #FFFFFF;
            z-index: 999;
            display: none;
            flex-direction: column;
            padding: 24px 24px 48px;
            overflow-y: auto;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu a {
            display: block;
            padding: 14px 8px;
            font-size: 18px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu a:hover, .mobile-menu a.active { color: var(--primary); }
        .mobile-menu-footer { margin-top: auto; padding-top: 24px; }
        .mobile-menu-footer .header-cta { width: 100%; justify-content: center; }
        .mobile-menu-phone { display: block; text-align: center; color: var(--text-secondary); font-size: 14px; margin-bottom: 12px; }

        /* Hero */
        .hero {
            background: var(--bg);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(15,90,76,0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container { position: relative; }
        .hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .hero-badge .dot { width: 7px; height: 7px; background: var(--success); border-radius: 50%; }
        .hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .hero h1 .highlight { color: var(--primary); }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 520px;
        }
        .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 32px; }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #FFFFFF;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
            border: none;
        }
        .btn-primary:hover { background: var(--accent-dark); color: #FFFFFF; text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-primary:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
        .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            border: 1.5px solid var(--primary);
            transition: background 0.25s, color 0.25s, transform 0.25s;
        }
        .btn-secondary:hover { background: var(--primary-light); color: var(--primary); text-decoration: none; transform: translateY(-2px); }
        .btn-secondary:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
        .btn-secondary:active { transform: translateY(0); }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4 / 3;
            background: var(--bg-alt);
        }
        .hero-visual img { width: 100%; height: 100%; object-fit: cover; }
        .hero-visual::after {
            content: '汉华优配网';
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(15,90,76,0.85);
            color: #FFFFFF;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
        }
        .hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
        .hero-stat { text-align: left; padding: 14px 0; border-top: 2px solid var(--border); }
        .hero-stat-number { font-size: 30px; font-weight: 700; color: var(--primary); line-height: 1.2; }
        .hero-stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

        /* Trust Bar */
        .trust-bar { background: var(--primary-light); border-bottom: 1px solid rgba(15,90,76,0.08); }
        .trust-bar .container { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; gap: 12px; flex-wrap: wrap; }
        .trust-item { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--primary); white-space: nowrap; }
        .trust-item .icon { width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center; background: var(--primary); color: #FFF; border-radius: 50%; font-size: 11px; flex-shrink: 0; }
        .trust-divider { width: 1px; height: 22px; background: rgba(15,90,76,0.15); }

        /* Category Entry */
        .category-entry-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
        .category-entry-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
            display: flex;
            flex-direction: column;
        }
        .category-entry-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: var(--primary-light); }
        .category-entry-card.wide { grid-column: span 2; flex-direction: row; }
        .category-entry-card .cec-img { background: var(--bg-alt); overflow: hidden; position: relative; }
        .category-entry-card.wide .cec-img { width: 45%; min-height: 260px; }
        .category-entry-card:not(.wide) .cec-img { aspect-ratio: 16 / 9; }
        .category-entry-card .cec-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
        .category-entry-card:hover .cec-img img { transform: scale(1.03); }
        .category-entry-card .cec-body { padding: 22px 24px; display: flex; flex-direction: column; justify-content: center; flex: 1; }
        .category-entry-card .cec-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .category-entry-card h3 { font-size: 19px; font-weight: 600; color: var(--text); margin-bottom: 8px; line-height: 1.4; }
        .category-entry-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
        .cec-link { font-size: 14px; font-weight: 600; color: var(--primary); margin-top: 10px; display: inline-flex; align-items: center; gap: 4px; }
        .cec-link:hover { color: var(--accent); }

        /* Scene Cards */
        .scene-scroll { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
        .scene-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .scene-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .scene-card .scene-icon { width: 44px; height: 44px; background: var(--primary-light); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-size: 20px; color: var(--primary); }
        .scene-card h3 { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
        .scene-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

        /* Products Grid */
        .products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
        .product-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, transform 0.25s;
            position: relative;
        }
        .product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .product-card .product-img { aspect-ratio: 16 / 10; background: var(--bg-alt); overflow: hidden; position: relative; }
        .product-card .product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
        .product-card:hover .product-img img { transform: scale(1.04); }
        .product-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent);
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 600;
            z-index: 2;
        }
        .product-card .product-body { padding: 16px 18px 18px; }
        .product-card h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
        .product-card .product-spec { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
        .product-card .product-price { font-size: 16px; font-weight: 700; color: var(--accent); }
        .product-card .product-time { font-size: 12px; color: var(--text-light); margin-top: 4px; }

        /* Info/News CMS List */
        .info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
        .info-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .info-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .info-card .info-img { aspect-ratio: 16 / 10; background: var(--bg-alt); overflow: hidden; }
        .info-card .info-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
        .info-card:hover .info-img img { transform: scale(1.04); }
        .info-card .info-body { padding: 18px 20px; }
        .info-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .info-card h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 8px; line-height: 1.45; }
        .info-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 10px; }
        .info-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-light); }
        .info-meta .divider { width: 4px; height: 4px; background: var(--border); border-radius: 50%; }
        .empty-state { text-align: center; padding: 40px 20px; color: var(--text-secondary); font-size: 15px; background: var(--card-bg); border: 1px dashed var(--border); border-radius: var(--radius-md); }

        /* Process Steps */
        .process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
        .process-step { text-align: center; padding: 10px 6px; }
        .process-step .step-num {
            width: 52px;
            height: 52px;
            background: var(--card-bg);
            border: 2px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }
        .process-step h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
        .process-step p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

        /* Quality Section */
        .quality-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
        .quality-visual { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 4 / 3; }
        .quality-visual img { width: 100%; height: 100%; object-fit: cover; }
        .quality-list { margin-top: 18px; }
        .quality-list li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 14px; font-size: 15px; color: var(--text); }
        .quality-list li .check {
            width: 22px;
            height: 22px;
            background: var(--success);
            color: #FFFFFF;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
            margin-top: 3px;
        }

        /* Partners */
        .partners-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
        .partner-logo {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            min-height: 72px;
            text-align: center;
            transition: border-color 0.25s, color 0.25s;
        }
        .partner-logo:hover { border-color: var(--primary-light); color: var(--primary); }

        /* Testimonials */
        .testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .testimonial-card:nth-child(2) { margin-top: 20px; }
        .testimonial-quote { font-size: 14px; color: var(--text); line-height: 1.7; flex: 1; margin-bottom: 16px; }
        .testimonial-quote::before { content: '"'; font-size: 28px; color: var(--accent); font-weight: 700; margin-right: 2px; }
        .testimonial-quote::after { content: '"'; font-size: 28px; color: var(--accent); font-weight: 700; margin-left: 2px; }
        .testimonial-author { font-size: 14px; font-weight: 600; color: var(--text); }
        .testimonial-company { font-size: 12px; color: var(--text-secondary); }
        .testimonial-stars { color: var(--accent); font-size: 14px; margin-bottom: 8px; letter-spacing: 1px; }

        /* FAQ */
        .faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 820px; }
        .faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            transition: background 0.2s;
            user-select: none;
        }
        .faq-question:hover { background: var(--primary-faint); }
        .faq-question .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform 0.25s;
        }
        .faq-question.active .faq-toggle { transform: rotate(45deg); background: var(--primary); color: #FFFFFF; }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s, padding 0.35s;
            background: var(--primary-faint);
            border-top: 1px dashed var(--border);
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-question.active + .faq-answer { padding: 18px 20px; max-height: 280px; }

        /* CTA Form */
        .cta-form-section { background: var(--primary); color: #F7F5F0; }
        .cta-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
        .cta-form-grid h2 { font-size: 28px; font-weight: 700; color: #F7F5F0; margin-bottom: 12px; }
        .cta-form-grid p { font-size: 15px; color: var(--text-light); line-height: 1.7; }
        .contact-form { background: var(--card-bg); border-radius: var(--radius-md); padding: 28px; box-shadow: var(--shadow-lg); }
        .form-group { margin-bottom: 16px; }
        .form-group label { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
        .form-group label .required { color: var(--accent); }
        .form-group input, .form-group select, .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text);
            background: #FFFFFF;
            transition: border-color 0.25s, box-shadow 0.25s;
            resize: vertical;
        }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15,90,76,0.1);
        }
        .form-group textarea { min-height: 88px; }
        .form-submit { width: 100%; }

        /* Promotions */
        .promo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        .promo-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .promo-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .promo-card .promo-img { aspect-ratio: 16 / 8; background: var(--bg-alt); overflow: hidden; }
        .promo-card .promo-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
        .promo-card:hover .promo-img img { transform: scale(1.04); }
        .promo-card .promo-body { padding: 20px 22px; display: flex; flex-direction: column; flex: 1; }
        .promo-tag {
            display: inline-block;
            background: var(--accent);
            color: #FFFFFF;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .promo-card h3 { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
        .promo-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; flex: 1; margin-bottom: 12px; }
        .promo-time { font-size: 12px; color: var(--text-light); margin-bottom: 10px; }

        /* Knowledge Center */
        .knowledge-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .knowledge-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, transform 0.25s;
            display: flex;
            flex-direction: column;
        }
        .knowledge-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .knowledge-item h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 8px; line-height: 1.45; }
        .knowledge-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; flex: 1; margin-bottom: 10px; }
        .knowledge-item .knowledge-time { font-size: 12px; color: var(--text-light); }

        /* Footer */
        .site-footer { background: var(--primary); color: #F7F5F0; padding: 56px 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
        .footer-brand .logo-text { color: #F7F5F0; font-size: 18px; }
        .footer-brand p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-top: 12px; max-width: 320px; }
        .footer-contact { margin-top: 14px; font-size: 14px; color: var(--text-light); line-height: 1.8; }
        .footer-col h4 { font-size: 16px; font-weight: 600; color: #F7F5F0; margin-bottom: 16px; }
        .footer-col a { display: block; font-size: 14px; color: var(--text-light); padding: 5px 0; transition: color 0.2s; }
        .footer-col a:hover { color: var(--accent); text-decoration: none; }
        .footer-bottom {
            border-top: 1px solid rgba(247,245,240,0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
        }
        .footer-bottom .copyright { color: var(--text-light); }
        .footer-bottom .copyright a { color: var(--text-light); }
        .footer-bottom .copyright a:hover { color: var(--accent); }

        /* Back to top */
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: var(--shadow-md);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s, transform 0.3s;
            z-index: 900;
        }
        .back-to-top.visible { opacity: 1; pointer-events: auto; }
        .back-to-top:hover { background: var(--accent); color: #FFFFFF; text-decoration: none; transform: translateY(-3px); }

        /* Responsive */
        @media (max-width: 1279px) {
            .hero h1 { font-size: 32px; }
            .scene-scroll { grid-template-columns: repeat(2, 1fr); }
            .products-grid { grid-template-columns: repeat(3, 1fr); }
            .info-grid { grid-template-columns: repeat(2, 1fr); }
            .partners-grid { grid-template-columns: repeat(3, 1fr); }
            .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
            .knowledge-list { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 1023px) {
            .main-nav { display: none; }
            .header-cta { display: none; }
            .hamburger { display: flex; }
            .hero-grid { grid-template-columns: 1fr; gap: 32px; }
            .hero-visual { max-height: 300px; }
            .category-entry-grid { grid-template-columns: 1fr 1fr; }
            .category-entry-card.wide { grid-column: span 2; }
            .quality-grid { grid-template-columns: 1fr; }
            .cta-form-grid { grid-template-columns: 1fr; }
            .promo-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 767px) {
            .section { padding: var(--section-padding-mobile); }
            .hero { padding: 36px 0 32px; }
            .hero h1 { font-size: 26px; }
            .hero-subtitle { font-size: 15px; }
            .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
            .hero-stat-number { font-size: 22px; }
            .hero-stat-label { font-size: 11px; }
            .trust-bar .container { gap: 6px; }
            .trust-item { font-size: 12px; }
            .trust-divider { display: none; }
            .category-entry-grid { grid-template-columns: 1fr; }
            .category-entry-card.wide { grid-column: span 1; flex-direction: column; }
            .category-entry-card.wide .cec-img { width: 100%; min-height: auto; aspect-ratio: 16 / 9; }
            .scene-scroll { grid-template-columns: 1fr; }
            .products-grid { grid-template-columns: repeat(2, 1fr); }
            .info-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .partners-grid { grid-template-columns: repeat(2, 1fr); }
            .testimonials-grid { grid-template-columns: 1fr; }
            .testimonial-card:nth-child(2) { margin-top: 0; }
            .knowledge-list { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .section-title { font-size: 22px; }
            .btn-primary, .btn-secondary { padding: 11px 20px; font-size: 14px; }
            .contact-form { padding: 20px 16px; }
            .hero-actions { gap: 8px; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 22px; }
            .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
            .hero-stat-number { font-size: 18px; }
            .products-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: 1fr; }
            .partners-grid { grid-template-columns: 1fr; }
            .category-entry-card.wide .cec-img { aspect-ratio: 16 / 10; }
        }

/* roulang page: article */
:root {
            --primary: #0F5A4C;
            --primary-dark: #0A4238;
            --primary-light: #E7F0ED;
            --primary-faint: #F0F5F3;
            --accent: #E08D3C;
            --accent-dark: #C8792B;
            --bg: #F7F5F0;
            --bg-alt: #EFECE5;
            --card-bg: #FFFFFF;
            --border: #E5DFD4;
            --text: #1D2A27;
            --text-secondary: #5F6B67;
            --text-light: #A9BCB6;
            --success: #2F7D5D;
            --error: #C04A3A;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 10px rgba(15,90,76,0.05);
            --shadow-md: 0 4px 16px rgba(15,90,76,0.08);
            --shadow-lg: 0 8px 24px rgba(15,90,76,0.12);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK", sans-serif;
            --container: 1200px;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s, border-color 0.25s;
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-padding);
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-alt {
            background: var(--card-bg);
        }
        .section-tint {
            background: var(--primary-faint);
        }
        .section-warm {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--primary);
            color: #F7F5F0;
        }
        .section-accent {
            background: var(--accent);
            color: #FFFFFF;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 680px;
        }
        .section-title.light, .section-subtitle.light {
            color: #F7F5F0;
        }
        .section-title.accent-title {
            color: var(--primary);
        }
        .section-title .highlight {
            color: var(--accent);
        }
        .section-title .highlight-primary {
            color: var(--primary);
        }
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 14px;
            position: relative;
            flex-shrink: 0;
        }
        .logo-icon::after {
            content: '';
            position: absolute;
            bottom: -3px;
            right: -3px;
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
            border: 2px solid #FFFFFF;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo-text:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            position: relative;
            transition: color 0.2s, background 0.2s;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-faint);
            text-decoration: none;
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: var(--radius-pill);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--accent-dark);
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: var(--radius-pill);
            transition: all 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            position: fixed;
            top: 68px;
            left: 0;
            width: 100%;
            height: calc(100vh - 68px);
            background: #FFFFFF;
            z-index: 999;
            display: none;
            flex-direction: column;
            padding: 24px 20px;
            overflow-y: auto;
            border-top: 1px solid var(--border);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 8px;
            font-size: 18px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid var(--bg-alt);
            transition: color 0.2s, padding-left 0.2s;
        }
        .mobile-menu a:hover {
            color: var(--primary);
            padding-left: 16px;
            text-decoration: none;
            background: var(--primary-faint);
        }
        .mobile-menu .header-cta {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 20px;
            font-size: 16px;
            padding: 14px 20px;
        }
        .mobile-menu .mobile-contact {
            margin-top: 20px;
            padding: 16px;
            background: var(--primary-faint);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text-secondary);
        }
        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 20px 0 0;
            font-size: 14px;
        }
        .breadcrumb-wrap .breadcrumb-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            color: var(--text-secondary);
        }
        .breadcrumb-wrap a {
            color: var(--text-secondary);
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap .separator {
            color: var(--text-light);
            user-select: none;
        }
        .breadcrumb-wrap .current {
            color: var(--primary);
            font-weight: 600;
        }
        /* Article Header */
        .article-header-section {
            padding: 24px 0 12px;
        }
        .article-h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .article-meta-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 16px 20px;
            background: var(--primary-faint);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 16px;
        }
        .article-meta-bar .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-bar .meta-label {
            color: var(--text-light);
        }
        .article-meta-bar .meta-value {
            color: var(--text);
            font-weight: 500;
        }
        .article-meta-bar .badge-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
        }
        /* Article Body */
        .article-body-section {
            padding: 28px 0 40px;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            max-width: 820px;
        }
        .article-body p {
            margin-bottom: 1em;
        }
        .article-body h2 {
            font-size: 22px;
            font-weight: 600;
            color: var(--primary);
            margin: 28px 0 12px;
            line-height: 1.3;
        }
        .article-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 24px 0 10px;
            line-height: 1.35;
        }
        .article-body blockquote {
            border-left: 3px solid var(--primary);
            background: var(--primary-faint);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-size: 15px;
        }
        .article-body ul, .article-body ol {
            margin: 0 0 1em 1.5em;
            padding-left: 0;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--bg-alt);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 14px;
            overflow-x: auto;
            display: block;
        }
        .article-body table th, .article-body table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body table th {
            background: var(--primary-faint);
            color: var(--primary);
            font-weight: 600;
            white-space: nowrap;
        }
        /* Article Empty State */
        .article-empty {
            text-align: center;
            padding: 60px 20px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
        }
        .article-empty p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .article-empty a {
            display: inline-block;
            padding: 12px 24px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: background 0.25s, transform 0.25s;
        }
        .article-empty a:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-1px);
        }
        /* Article Tags & Share */
        .article-footer-tags {
            padding: 20px 0;
            border-top: 1px solid var(--border);
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }
        .article-footer-tags .tags-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .article-footer-tags .tag {
            display: inline-block;
            padding: 6px 14px;
            background: var(--primary-faint);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        .article-footer-tags .tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }
        .share-placeholder {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .share-placeholder .share-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: background 0.2s, color 0.2s;
        }
        .share-placeholder .share-icon:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        /* Related Articles */
        .related-section {
            padding: 40px 0 60px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 24px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s, box-shadow 0.25s;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .related-card .card-img {
            aspect-ratio: 16/9;
            background: var(--bg-alt);
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s;
        }
        .related-card:hover .card-img img {
            transform: scale(1.04);
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.45;
            margin-bottom: 8px;
            transition: color 0.2s;
        }
        .related-card:hover .card-body h3 {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .related-card .card-body .card-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-empty {
            text-align: center;
            padding: 40px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            font-size: 15px;
            color: var(--text-secondary);
        }
        /* CTA Form */
        .cta-section {
            padding: 56px 0 72px;
            background: var(--primary);
        }
        .cta-form-wrap {
            max-width: 640px;
            margin: 0 auto;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            box-shadow: var(--shadow-lg);
        }
        .cta-form-wrap h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .cta-form-wrap p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-weight: 500;
        }
        .form-group label .required {
            color: var(--accent);
            margin-left: 2px;
        }
        .form-group input, .form-group select, .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--text);
            background: #FFFFFF;
            transition: border-color 0.25s, box-shadow 0.25s;
            appearance: none;
            -webkit-appearance: none;
        }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15,90,76,0.1);
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .form-submit {
            width: 100%;
            padding: 14px 24px;
            background: var(--accent);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 16px;
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
        }
        .form-submit:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .form-submit:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .form-submit:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: #F7F5F0;
            padding: 56px 0 0;
        }
        .site-footer a {
            color: #C5D4CF;
        }
        .site-footer a:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .site-footer .footer-brand .logo {
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .logo-text {
            color: #F7F5F0;
            font-size: 17px;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #C5D4CF;
            margin-bottom: 16px;
            max-width: 360px;
        }
        .site-footer .footer-contact {
            font-size: 14px;
            color: #C5D4CF;
            line-height: 1.8;
        }
        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #F7F5F0;
            margin-bottom: 16px;
        }
        .site-footer .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 18px 0;
            border-top: 1px solid rgba(247,245,240,0.15);
            font-size: 13px;
            color: var(--text-light);
        }
        .site-footer .footer-bottom .copyright {
            color: #A9BCB6;
        }
        /* Back to top */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 600;
            box-shadow: var(--shadow-lg);
            transition: background 0.25s, transform 0.25s;
            z-index: 900;
            opacity: 0;
            pointer-events: none;
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--accent);
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-3px);
        }
        .back-to-top:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .site-header .main-nav {
                display: none;
            }
            .site-header .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .article-h1 {
                font-size: 26px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .section-sm {
                padding: 32px 0;
            }
            .article-h1 {
                font-size: 22px;
            }
            .article-body {
                font-size: 15px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-form-wrap {
                padding: 24px 20px;
            }
            .article-meta-bar {
                gap: 10px;
                padding: 12px 16px;
                font-size: 13px;
                flex-wrap: wrap;
            }
            .article-footer-tags {
                flex-direction: column;
                align-items: flex-start;
            }
            .share-placeholder {
                margin-left: 0;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .article-h1 {
                font-size: 20px;
            }
            .article-body h2 {
                font-size: 19px;
            }
            .article-body h3 {
                font-size: 16px;
            }
            .breadcrumb-wrap {
                font-size: 13px;
            }
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 38px;
                height: 38px;
                font-size: 17px;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #0F5A4C;
    --primary-dark: #0A4238;
    --primary-light: #E7F0ED;
    --primary-faint: #F0F5F3;
    --accent: #E08D3C;
    --accent-dark: #C8792B;
    --bg: #F7F5F0;
    --bg-alt: #EFECE5;
    --card-bg: #FFFFFF;
    --border: #E5DFD4;
    --text: #1D2A27;
    --text-secondary: #5F6B67;
    --text-light: #A9BCB6;
    --success: #2F7D5D;
    --error: #C04A3A;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 999px;
    --shadow-sm: 0 2px 10px rgba(15,90,76,0.05);
    --shadow-md: 0 4px 16px rgba(15,90,76,0.08);
    --shadow-lg: 0 8px 24px rgba(15,90,76,0.12);
    --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK", sans-serif;
    --container: 1200px;
    --section-padding: 72px 0;
    --section-padding-mobile: 44px 0;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    margin: 0;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s, border-color 0.25s; }
a:hover { color: var(--accent); text-decoration: underline; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: var(--section-padding); }
.section-alt { background: var(--card-bg); }
.section-tint { background: var(--primary-faint); }
.section-warm { background: var(--bg-alt); }
.section-dark { background: var(--primary); color: #F7F5F0; }
.section-title { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 12px; line-height: 1.3; }
.section-subtitle { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; line-height: 1.7; max-width: 680px; }
.section-title.light, .section-subtitle.light { color: #F7F5F0; }
.highlight { color: var(--accent); }
.highlight-primary { color: var(--primary); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 12px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 15px; transition: background 0.25s, transform 0.25s, box-shadow 0.25s, color 0.25s; border: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); text-decoration: none; }
.btn-secondary { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-secondary:hover { background: var(--primary-light); color: var(--primary); text-decoration: none; }
.btn-link-arrow { display: inline-flex; align-items: center; gap: 4px; color: var(--primary); font-weight: 600; font-size: 15px; padding: 4px 0; }
.btn-link-arrow:hover { color: var(--accent); text-decoration: none; }
.btn-link-arrow .arrow { transition: transform 0.2s; }
.btn-link-arrow:hover .arrow { transform: translateX(4px); }

/* badges */
.badge-tag { display: inline-block; background: var(--primary-light); color: var(--primary); border-radius: var(--radius-pill); padding: 4px 12px; font-size: 12px; font-weight: 500; }
.badge-accent { display: inline-block; background: var(--accent); color: #fff; border-radius: 6px; padding: 4px 10px; font-size: 12px; font-weight: 600; }
.badge-time { color: var(--text-secondary); font-size: 13px; }

/* header */
.site-header {
    position: sticky; top: 0; z-index: 1000; background: #FFFFFF; border-bottom: 1px solid var(--border); height: 68px; display: flex; align-items: center;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 36px; height: 36px; background: var(--primary); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: #FFFFFF; font-weight: 700; font-size: 14px; position: relative; flex-shrink: 0; }
.logo-icon::after { content: ''; position: absolute; bottom: -3px; right: -3px; width: 10px; height: 10px; background: var(--accent); border-radius: 50%; border: 2px solid #FFFFFF; }
.logo-text { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }
.logo-text:hover { color: var(--primary); text-decoration: none; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a { display: inline-block; padding: 8px 14px; font-size: 15px; font-weight: 500; color: var(--text); border-radius: var(--radius-sm); position: relative; transition: color 0.2s, background 0.2s; }
.main-nav a:hover { color: var(--primary); background: var(--primary-faint); text-decoration: none; }
.main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 16px; height: 3px; background: var(--accent); border-radius: var(--radius-pill); }
.header-cta { display: inline-flex; align-items: center; gap: 6px; background: var(--accent); color: #FFFFFF; padding: 10px 20px; border-radius: var(--radius-sm); font-weight: 600; font-size: 14px; transition: background 0.25s, transform 0.25s, box-shadow 0.25s; white-space: nowrap; }
.header-cta:hover { background: var(--accent-dark); color: #FFFFFF; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; border-radius: var(--radius-sm); }
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: var(--radius-pill); transition: all 0.3s; }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu { position: fixed; top: 68px; left: 0; width: 100%; height: calc(100vh - 68px); background: #FFFFFF; z-index: 999; display: none; flex-direction: column; padding: 24px 20px; overflow-y: auto; }
.mobile-menu.open { display: flex; }
.mobile-menu a { display: block; padding: 14px 10px; font-size: 18px; font-weight: 500; color: var(--text); border-bottom: 1px solid var(--border); }
.mobile-menu a.active { color: var(--primary); font-weight: 600; }
.mobile-menu .mobile-cta { margin-top: 20px; }

/* breadcrumb */
.breadcrumb { font-size: 14px; color: var(--text-secondary); padding: 10px 0; }
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--primary); font-weight: 600; }

/* category hero */
.category-hero { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 36px; align-items: center; }
.category-hero h1 { font-size: 36px; font-weight: 700; color: var(--text); margin: 8px 0 14px; line-height: 1.3; }
.category-hero .lead { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 20px; }
.category-hero img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.hero-stats { display: flex; gap: 28px; margin-top: 20px; flex-wrap: wrap; }
.hero-stats .stat { text-align: left; }
.hero-stats .stat strong { font-size: 28px; font-weight: 700; color: var(--primary); display: block; line-height: 1.2; }
.hero-stats .stat span { font-size: 14px; color: var(--text-secondary); }

/* filter bar */
.filter-bar { background: var(--bg-alt); border-radius: var(--radius-md); padding: 16px 20px; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-bottom: 28px; }
.filter-bar label { font-size: 14px; color: var(--text-secondary); margin-right: 6px; }
.filter-bar select { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 12px; font-size: 14px; color: var(--text); outline: none; }
.filter-bar select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,90,76,0.1); }
.sort-btns { display: flex; gap: 8px; flex-wrap: wrap; }
.sort-btn { padding: 8px 14px; border-radius: var(--radius-pill); font-size: 14px; color: var(--text-secondary); background: #fff; border: 1px solid var(--border); transition: all 0.2s; }
.sort-btn:hover { color: var(--primary); border-color: var(--primary); }
.sort-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.result-count { margin-left: auto; font-size: 14px; color: var(--text-secondary); }

/* product cards */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: transform 0.3s, box-shadow 0.3s; display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-card img { width: 100%; height: 180px; object-fit: cover; background: var(--bg-alt); }
.product-card .card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 8px; line-height: 1.4; }
.product-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 12px; flex: 1; }
.product-card .card-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.product-card .card-link { font-weight: 600; color: var(--primary); font-size: 14px; display: inline-flex; align-items: center; gap: 4px; }
.product-card .card-link:hover { color: var(--accent); text-decoration: none; }

/* scenario cards */
.scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.scenario-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px; transition: transform 0.3s, box-shadow 0.3s; }
.scenario-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.scenario-icon { font-size: 32px; color: var(--primary); margin-bottom: 12px; }
.scenario-card h3 { font-size: 20px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.scenario-card p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; margin: 0; }

/* steps */
.steps-list { display: flex; flex-direction: column; gap: 16px; }
.step-item { display: flex; gap: 16px; align-items: flex-start; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; }
.step-num { width: 36px; height: 36px; background: var(--primary-light); color: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; flex-shrink: 0; }
.step-content h4 { font-size: 18px; font-weight: 600; color: var(--text); margin: 0 0 6px; }
.step-content p { font-size: 14px; color: var(--text-secondary); margin: 0; }

/* quality section */
.quality-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.quality-text h3 { font-size: 24px; font-weight: 700; color: var(--primary); margin-bottom: 14px; }
.quality-text p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.quality-list { list-style: none; padding: 0; margin: 0; }
.quality-list li { margin-bottom: 10px; font-size: 15px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.quality-list li::before { content: '✓'; color: var(--success); font-weight: bold; }
.quality-img img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.faq-item summary { padding: 20px; font-size: 18px; font-weight: 600; color: var(--text); cursor: pointer; list-style: none; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); font-size: 22px; color: var(--primary); transition: transform 0.2s; }
.faq-item[open] summary::after { content: '−'; }
.faq-item .faq-answer { padding: 0 20px 20px; font-size: 15px; color: var(--text-secondary); border-top: 1px dashed var(--border); }
.faq-item .faq-answer p { margin: 16px 0 0; }

/* CTA form */
.quote-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.form-group { display: flex; flex-direction: column; }
.form-group label { font-size: 14px; color: #F7F5F0; margin-bottom: 8px; font-weight: 500; }
.form-group label .required { color: var(--accent); }
.form-group input, .form-group select, .form-group textarea { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; font-size: 15px; color: var(--text); outline: none; transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,90,76,0.1); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group.full { grid-column: span 2; }
.quote-form .btn-primary { grid-column: span 2; justify-self: start; }

/* footer */
.site-footer { background: var(--primary); color: #F7F5F0; padding: 48px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand p { font-size: 14px; color: #D8E3DE; line-height: 1.7; margin: 12px 0; }
.footer-contact { font-size: 14px; color: #A9BCB6; }
.footer-col h4 { font-size: 16px; font-weight: 600; color: #F7F5F0; margin-bottom: 14px; }
.footer-col a { display: block; color: #D8E3DE; font-size: 14px; margin-bottom: 10px; }
.footer-col a:hover { color: var(--accent); text-decoration: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.15); padding-top: 16px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 13px; color: #A9BCB6; }

@media (max-width: 1024px) {
    .category-hero { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .scenario-grid { grid-template-columns: 1fr 1fr; }
    .quality-wrap { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .main-nav, .header-cta { display: none; }
    .hamburger { display: flex; }
    .section { padding: var(--section-padding-mobile); }
    .product-grid { grid-template-columns: 1fr; }
    .scenario-grid { grid-template-columns: 1fr; }
    .quote-form { grid-template-columns: 1fr; }
    .quote-form .full { grid-column: span 1; }
    .quote-form .btn-primary { grid-column: span 1; align-self: start; }
    .category-hero h1 { font-size: 28px; }
    .hero-stats { gap: 16px; }
    .hero-stats .stat strong { font-size: 24px; }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .result-count { margin-left: 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category2 */
:root {
            --primary: #0F5A4C;
            --primary-dark: #0A4238;
            --primary-light: #E7F0ED;
            --primary-faint: #F0F5F3;
            --accent: #E08D3C;
            --accent-dark: #C8792B;
            --bg: #F7F5F0;
            --bg-alt: #EFECE5;
            --card-bg: #FFFFFF;
            --border: #E5DFD4;
            --text: #1D2A27;
            --text-secondary: #5F6B67;
            --text-light: #A9BCB6;
            --success: #2F7D5D;
            --error: #C04A3A;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 10px rgba(15,90,76,0.05);
            --shadow-md: 0 4px 16px rgba(15,90,76,0.08);
            --shadow-lg: 0 8px 24px rgba(15,90,76,0.12);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK", sans-serif;
            --container: 1200px;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s, border-color 0.25s; }
        a:hover { color: var(--accent); text-decoration: underline; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
        .section { padding: var(--section-padding); }
        .section-alt { background: var(--card-bg); }
        .section-tint { background: var(--primary-faint); }
        .section-warm { background: var(--bg-alt); }
        .section-dark { background: var(--primary); color: #F7F5F0; }
        .section-accent { background: var(--accent); color: #FFFFFF; }
        .section-title { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 12px; line-height: 1.3; }
        .section-subtitle { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; line-height: 1.7; max-width: 680px; }
        .section-title.light, .section-subtitle.light { color: #F7F5F0; }
        .section-title.accent-title { color: var(--primary); }
        .section-title .highlight { color: var(--accent); }
        .section-title .highlight-primary { color: var(--primary); }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
        .logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .logo-icon { width: 36px; height: 36px; background: var(--primary); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: #FFFFFF; font-weight: 700; font-size: 14px; position: relative; flex-shrink: 0; }
        .logo-icon::after { content: ''; position: absolute; bottom: -3px; right: -3px; width: 10px; height: 10px; background: var(--accent); border-radius: 50%; border: 2px solid #FFFFFF; }
        .logo-text { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }
        .logo-text:hover { color: var(--primary); text-decoration: none; }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            position: relative;
            transition: color 0.2s, background 0.2s;
        }
        .main-nav a:hover { color: var(--primary); background: var(--primary-faint); text-decoration: none; }
        .main-nav a.active { color: var(--primary); font-weight: 600; }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: var(--radius-pill);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
            white-space: nowrap;
        }
        .header-cta:hover { background: var(--accent-dark); color: #FFFFFF; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; border-radius: var(--radius-sm); }
        .hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: var(--radius-pill); transition: all 0.3s; }
        .hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .mobile-menu {
            position: fixed;
            top: 68px;
            left: 0;
            width: 100%;
            height: calc(100vh - 68px);
            background: #FFFFFF;
            z-index: 999;
            display: none;
            flex-direction: column;
            padding: 24px 20px;
            overflow-y: auto;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu a { padding: 16px 8px; font-size: 18px; border-bottom: 1px solid var(--border); color: var(--text); }
        .mobile-menu a:hover { color: var(--primary); text-decoration: none; }
        .mobile-menu .mobile-cta { margin-top: 24px; text-align: center; }

        /* Breadcrumb */
        .breadcrumb-wrap { background: var(--bg-alt); padding: 12px 0; font-size: 14px; color: var(--text-secondary); }
        .breadcrumb-wrap a { color: var(--text-secondary); }
        .breadcrumb-wrap a:hover { color: var(--primary); }
        .breadcrumb-sep { margin: 0 6px; color: var(--text-light); }
        .breadcrumb-current { color: var(--primary); font-weight: 600; }

        /* Category Intro */
        .category-intro { background: #fff; padding: 40px 0 32px; }
        .category-intro h1 { font-size: 34px; font-weight: 700; color: var(--primary); margin-bottom: 12px; line-height: 1.3; }
        .category-intro .lead { font-size: 16px; color: var(--text-secondary); max-width: 820px; line-height: 1.8; }

        /* Filter Bar */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            background: var(--bg-alt);
            padding: 16px 18px;
            border-radius: var(--radius-sm);
            margin-bottom: 28px;
        }
        .filter-bar .filter-label { font-size: 14px; color: var(--text-secondary); }
        .filter-bar select, .filter-bar input[type="text"] {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            background: #fff;
            font-size: 14px;
            color: var(--text);
            min-width: 140px;
        }
        .filter-bar .result-count { font-size: 14px; color: var(--text-secondary); margin-left: auto; }

        /* Cards Grid */
        .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
        .card-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .card-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .card-item .card-img {
            height: 170px;
            background: var(--bg-alt);
            overflow: hidden;
            position: relative;
        }
        .card-item .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
        .card-item:hover .card-img img { transform: scale(1.03); }
        .card-item .card-body { padding: 18px 20px 20px; }
        .card-item .card-title { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 6px; line-height: 1.4; }
        .card-item .card-text { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 12px; min-height: 44px; }
        .card-item .card-meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-light); }
        .card-item .category-tag { display: inline-block; background: var(--primary-light); color: var(--primary); border-radius: var(--radius-pill); padding: 4px 12px; font-size: 12px; }
        .btn-outline-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.25s;
        }
        .btn-outline-primary-custom:hover { background: var(--primary-light); color: var(--primary-dark); text-decoration: none; }

        /* Scenario Cards */
        .scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
        .scenario-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .scenario-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .scenario-card .scenario-icon { width: 48px; height: 48px; background: var(--primary-light); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--primary); flex-shrink: 0; }
        .scenario-card h3 { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
        .scenario-card p { font-size: 14px; color: var(--text-secondary); margin: 0; }

        /* Steps */
        .steps-vertical { display: flex; flex-direction: column; gap: 0; }
        .step-item { display: flex; gap: 18px; position: relative; padding-bottom: 24px; }
        .step-item:last-child { padding-bottom: 0; }
        .step-item::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 40px;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }
        .step-item:last-child::before { display: none; }
        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }
        .step-content h4 { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
        .step-content p { font-size: 14px; color: var(--text-secondary); margin: 0; }

        /* Quality Check */
        .quality-check { background: var(--card-bg); border-radius: var(--radius-md); padding: 32px; display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
        .quality-check .quality-img { flex: 1 1 300px; background: var(--bg-alt); border-radius: var(--radius-sm); height: 220px; overflow: hidden; }
        .quality-check .quality-img img { width: 100%; height: 100%; object-fit: cover; }
        .quality-check .quality-content { flex: 2 1 400px; }
        .quality-check .check-list { list-style: none; padding: 0; margin: 16px 0 0; }
        .quality-check .check-list li { position: relative; padding-left: 28px; margin-bottom: 10px; font-size: 14px; color: var(--text-secondary); }
        .quality-check .check-list li::before { content: '✓'; position: absolute; left: 0; top: 2px; color: var(--success); font-weight: 700; }

        /* FAQ */
        .accordion-custom .accordion-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; }
        .accordion-custom .accordion-header { margin: 0; }
        .accordion-custom .accordion-button {
            background: var(--card-bg);
            color: var(--text);
            font-weight: 600;
            font-size: 18px;
            padding: 18px 20px;
            border: none;
            width: 100%;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background 0.25s;
        }
        .accordion-custom .accordion-button:hover { background: var(--primary-faint); }
        .accordion-custom .accordion-button .icon { transition: transform 0.3s; }
        .accordion-custom .accordion-button.collapsed .icon { transform: rotate(0deg); }
        .accordion-custom .accordion-button:not(.collapsed) .icon { transform: rotate(45deg); }
        .accordion-custom .accordion-body { padding: 16px 20px; border-top: 1px dashed var(--border); background: var(--primary-faint); color: var(--text-secondary); font-size: 15px; }

        /* CTA Form */
        .cta-form-section { background: var(--primary); color: #F7F5F0; padding: 56px 0; }
        .cta-form-section .section-title { color: #F7F5F0; }
        .cta-form-section .section-subtitle { color: #cbd8d4; }
        .cta-form-card { background: #fff; border-radius: var(--radius-md); padding: 30px; max-width: 680px; margin: 0 auto; }
        .cta-form-card .form-label { font-weight: 500; color: var(--text); }
        .cta-form-card .form-control {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text);
            transition: border-color 0.25s, box-shadow 0.25s;
        }
        .cta-form-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15,90,76,0.1);
            outline: none;
        }
        .btn-primary-custom {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
        }
        .btn-primary-custom:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: #F7F5F0;
            padding: 48px 0 24px;
        }
        .site-footer .container { max-width: var(--container); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 32px; }
        .footer-brand p { color: #cbd8d4; font-size: 14px; line-height: 1.7; margin: 12px 0; max-width: 360px; }
        .footer-contact { color: #cbd8d4; font-size: 14px; line-height: 1.7; }
        .footer-col h4 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 14px; }
        .footer-col a { display: block; color: #cbd8d4; font-size: 14px; padding: 4px 0; }
        .footer-col a:hover { color: var(--accent); text-decoration: none; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            color: var(--text-light);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .scenario-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .main-nav a { padding: 8px 10px; font-size: 14px; }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .hamburger { display: flex; }
            .section { padding: var(--section-padding-mobile); }
            .card-grid { grid-template-columns: 1fr 1fr; }
            .scenario-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .filter-bar { flex-direction: column; align-items: stretch; }
            .filter-bar .result-count { margin-left: 0; }
            .quality-check { padding: 20px; flex-direction: column; }
        }
        @media (max-width: 520px) {
            .card-grid { grid-template-columns: 1fr; }
            .category-intro h1 { font-size: 26px; }
            .scenario-card { flex-direction: column; }
            .step-item { gap: 12px; }
            .step-number { width: 34px; height: 34px; font-size: 14px; }
            .cta-form-card { padding: 20px; }
            .header-cta { display: none; }
        }

/* roulang page: category3 */
:root {
            --primary: #0F5A4C;
            --primary-dark: #0A4238;
            --primary-light: #E7F0ED;
            --primary-faint: #F0F5F3;
            --accent: #E08D3C;
            --accent-dark: #C8792B;
            --bg: #F7F5F0;
            --bg-alt: #EFECE5;
            --card-bg: #FFFFFF;
            --border: #E5DFD4;
            --text: #1D2A27;
            --text-secondary: #5F6B67;
            --text-light: #A9BCB6;
            --success: #2F7D5D;
            --error: #C04A3A;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 10px rgba(15,90,76,0.05);
            --shadow-md: 0 4px 16px rgba(15,90,76,0.08);
            --shadow-lg: 0 8px 24px rgba(15,90,76,0.12);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK", sans-serif;
            --container: 1200px;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        *, *::before, *::after { box-sizing: border-box; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s, border-color 0.25s; }
        a:hover { color: var(--accent); text-decoration: underline; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { padding-left: 1.5em; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
        .section { padding: var(--section-padding); }
        .section-alt { background: var(--card-bg); }
        .section-tint { background: var(--primary-faint); }
        .section-warm { background: var(--bg-alt); }
        .section-dark { background: var(--primary); color: #F7F5F0; }
        .section-accent { background: var(--accent); color: #FFFFFF; }
        .section-title { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 12px; line-height: 1.3; }
        .section-subtitle { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; line-height: 1.7; max-width: 680px; }
        .section-title.light, .section-subtitle.light { color: #F7F5F0; }
        .section-title .highlight { color: var(--accent); }
        .section-title .highlight-primary { color: var(--primary); }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
        .logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .logo-icon { width: 36px; height: 36px; background: var(--primary); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: #FFFFFF; font-weight: 700; font-size: 14px; position: relative; flex-shrink: 0; }
        .logo-icon::after { content: ''; position: absolute; bottom: -3px; right: -3px; width: 10px; height: 10px; background: var(--accent); border-radius: 50%; border: 2px solid #FFFFFF; }
        .logo-text { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }
        .logo-text:hover { color: var(--primary); text-decoration: none; }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            position: relative;
            transition: color 0.2s, background 0.2s;
        }
        .main-nav a:hover { color: var(--primary); background: var(--primary-faint); text-decoration: none; }
        .main-nav a.active { color: var(--primary); font-weight: 600; }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: var(--radius-pill);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
            white-space: nowrap;
        }
        .header-cta:hover { background: var(--accent-dark); color: #FFFFFF; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; border-radius: var(--radius-sm); }
        .hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: var(--radius-pill); transition: all 0.3s; }
        .hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .mobile-menu {
            position: fixed;
            top: 68px;
            left: 0;
            width: 100%;
            height: calc(100vh - 68px);
            background: #FFFFFF;
            z-index: 999;
            display: none;
            flex-direction: column;
            padding: 24px 20px;
            overflow-y: auto;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu a {
            display: block;
            padding: 14px 8px;
            font-size: 18px;
            color: var(--text);
            border-bottom: 1px solid var(--border);
            transition: color 0.2s, background 0.2s;
        }
        .mobile-menu a:hover, .mobile-menu a.active { color: var(--primary); background: var(--primary-faint); text-decoration: none; }
        .mobile-contact { margin-top: 24px; padding: 16px; background: var(--primary-faint); border-radius: var(--radius-md); }
        .mobile-contact span { display: block; color: var(--text-secondary); font-size: 14px; margin-bottom: 12px; }
        .mobile-contact .header-cta { width: 100%; justify-content: center; }

        /* Breadcrumb */
        .breadcrumb-row { padding: 18px 0 0; }
        .breadcrumb { font-size: 14px; color: var(--text-secondary); display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb .sep { margin: 0 6px; color: var(--border); }
        .breadcrumb .current { color: var(--primary); font-weight: 600; }

        /* Category Hero */
        .cat-hero { padding: 40px 0 48px; background: var(--bg); border-bottom: 1px solid var(--border); }
        .cat-hero h1 { font-size: 36px; font-weight: 700; color: var(--text); margin: 0 0 16px; line-height: 1.3; }
        .cat-hero .cat-desc { font-size: 16px; color: var(--text-secondary); max-width: 780px; line-height: 1.8; }

        /* Filter Bar */
        .filter-bar { background: var(--bg-alt); border-radius: var(--radius-sm); padding: 14px 16px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
        .filter-bar select, .filter-bar .sort-btn, .filter-bar .result-count {
            font-size: 14px;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #FFFFFF;
            color: var(--text);
            cursor: pointer;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .filter-bar select:focus, .filter-bar .sort-btn:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15,90,76,0.1);
            outline: none;
        }
        .filter-bar .result-count { border: none; background: transparent; color: var(--text-secondary); cursor: default; }

        /* Category Cards Grid */
        .cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .cat-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: box-shadow 0.3s, transform 0.3s; display: flex; flex-direction: column; }
        .cat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); text-decoration: none; }
        .cat-card-img { width: 100%; height: 180px; object-fit: cover; background: var(--bg-alt); }
        .cat-card-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
        .cat-card-title { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 8px; line-height: 1.4; }
        .cat-card-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; flex: 1; }
        .cat-card-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
        .cat-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 12px; padding: 4px 12px; border-radius: var(--radius-pill); }
        .cat-time { font-size: 12px; color: var(--text-light); }

        /* View All Button */
        .view-more-wrap { text-align: center; margin-top: 28px; }
        .btn-view-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-sm);
            transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
        }
        .btn-view-more:hover { background: var(--primary-dark); color: #FFFFFF; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); }

        /* Scene Cards */
        .scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .scene-card { display: flex; gap: 16px; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; transition: box-shadow 0.3s, transform 0.3s; }
        .scene-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .scene-icon { width: 48px; height: 48px; flex-shrink: 0; background: var(--primary-light); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--primary); }
        .scene-info h4 { font-size: 17px; font-weight: 600; color: var(--text); margin: 0 0 6px; }
        .scene-info p { font-size: 14px; color: var(--text-secondary); margin: 0 0 8px; line-height: 1.65; }
        .scene-info a { font-size: 14px; font-weight: 500; color: var(--primary); }
        .scene-info a:hover { color: var(--accent); }

        /* Process Steps Vertical */
        .steps-vertical { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .step-v-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; position: relative; }
        .step-v-num { width: 32px; height: 32px; background: var(--primary); color: #FFFFFF; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px; margin-bottom: 12px; }
        .step-v-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
        .step-v-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin: 0; }

        /* Quality Assurance */
        .quality-wrap { display: flex; gap: 32px; align-items: center; flex-wrap: wrap; }
        .quality-img { flex: 1 1 45%; min-width: 280px; }
        .quality-img img { width: 100%; height: 300px; object-fit: cover; border-radius: var(--radius-lg); border: 1px solid var(--border); }
        .quality-content { flex: 1 1 45%; min-width: 280px; }
        .quality-content .section-title { margin-bottom: 16px; }
        .quality-list { list-style: none; padding: 0; margin: 0; }
        .quality-list li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; font-size: 15px; color: var(--text); }
        .quality-list li::before { content: '✓'; display: inline-flex; width: 22px; height: 22px; background: var(--success); color: #FFFFFF; border-radius: 50%; align-items: center; justify-content: center; font-size: 13px; flex-shrink: 0; margin-top: 2px; }

        /* FAQ Accordion */
        .faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 780px; }
        .faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
        .faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; font-size: 16px; font-weight: 600; color: var(--text); background: none; text-align: left; transition: background 0.2s; }
        .faq-question:hover { background: var(--primary-faint); }
        .faq-question .faq-icon { font-size: 20px; color: var(--primary); transition: transform 0.3s; flex-shrink: 0; margin-left: 12px; }
        .faq-item.open .faq-icon { transform: rotate(45deg); }
        .faq-answer { display: none; padding: 0 20px 18px; font-size: 15px; color: var(--text-secondary); line-height: 1.75; border-top: 1px dashed var(--border); padding-top: 14px; }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question { background: var(--primary-faint); }

        /* News List */
        .news-list { display: flex; flex-direction: column; gap: 0; }
        .news-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); align-items: flex-start; transition: background 0.2s; }
        .news-item:hover { background: var(--primary-faint); }
        .news-item-info { flex: 1; min-width: 0; }
        .news-item-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 4px; line-height: 1.5; }
        .news-item-title a { color: var(--text); }
        .news-item-title a:hover { color: var(--primary); text-decoration: none; }
        .news-item-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-item-meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-light); }
        .news-item-meta .cat-tag { font-size: 11px; padding: 2px 10px; }
        .news-empty { padding: 32px; text-align: center; color: var(--text-secondary); background: var(--card-bg); border: 1px dashed var(--border); border-radius: var(--radius-md); }

        /* CTA Form */
        .cta-form-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
        .cta-form-info h2 { font-size: 28px; font-weight: 700; color: #F7F5F0; margin-bottom: 14px; }
        .cta-form-info p { font-size: 15px; color: #D9E5E1; line-height: 1.7; margin: 0; }
        .cta-form { display: flex; flex-direction: column; gap: 14px; }
        .cta-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
        .cta-form input, .cta-form select, .cta-form textarea {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.95);
            color: var(--text);
            font-size: 14px;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .cta-form input:focus, .cta-form select:focus, .cta-form textarea:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(224,141,60,0.2);
            outline: none;
        }
        .cta-form textarea { min-height: 90px; resize: vertical; }
        .cta-form .btn-submit {
            background: var(--accent);
            color: #FFFFFF;
            padding: 13px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: background 0.25s, transform 0.25s;
            align-self: flex-start;
        }
        .cta-form .btn-submit:hover { background: var(--accent-dark); transform: translateY(-1px); }
        .cta-form label { color: #F7F5F0; font-size: 14px; display: block; margin-bottom: 4px; }
        .cta-form .required { color: var(--accent); }

        /* Footer */
        .site-footer { background: var(--primary); color: #F7F5F0; padding: 48px 0 24px; margin-top: 0; }
        .site-footer .container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
        .footer-brand .logo { margin-bottom: 14px; }
        .footer-brand .logo-text { color: #F7F5F0; }
        .footer-brand p { font-size: 14px; color: #D9E5E1; line-height: 1.7; margin-bottom: 12px; }
        .footer-contact { font-size: 13px; color: var(--text-light); line-height: 1.7; }
        .footer-col h4 { font-size: 15px; font-weight: 600; color: #F7F5F0; margin-bottom: 14px; }
        .footer-col a { display: block; font-size: 14px; color: #D9E5E1; margin-bottom: 8px; transition: color 0.2s; }
        .footer-col a:hover { color: var(--accent); text-decoration: none; }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; border-top: 1px solid rgba(255,255,255,0.15); padding-top: 20px; }
        .copyright { font-size: 13px; color: var(--text-light); }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav { display: none; }
            .hamburger { display: flex; }
            .header-cta { display: none; }
            .cat-grid { grid-template-columns: repeat(2, 1fr); }
            .scene-grid { grid-template-columns: 1fr; }
            .steps-vertical { grid-template-columns: repeat(2, 1fr); }
            .cta-form-wrap { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .section { padding: var(--section-padding-mobile); }
            .section-title { font-size: 24px; }
            .cat-hero h1 { font-size: 28px; }
            .cat-hero { padding: 28px 0 36px; }
            .cat-grid { grid-template-columns: 1fr; }
            .steps-vertical { grid-template-columns: 1fr; }
            .cta-form-row { grid-template-columns: 1fr; }
            .filter-bar { flex-direction: column; align-items: stretch; }
            .filter-bar select, .filter-bar .sort-btn { width: 100%; }
            .quality-wrap { flex-direction: column; }
            .quality-img, .quality-content { flex: 1 1 100%; min-width: auto; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cat-hero h1 { font-size: 24px; }
            .step-v-item { padding: 16px; }
            .scene-card { padding: 16px; }
        }