/* roulang page: index */
:root {
            --primary: #2B5C8F;
            --primary-dark: #1E4A6B;
            --primary-light: #3A7BBF;
            --accent: #F5A623;
            --accent-dark: #D4891A;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --border: #E5E9EF;
            --radius: 10px;
            --radius-sm: 6px;
            --shadow: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-hover: 0 6px 16px rgba(0,0,0,0.10);
            --transition: 0.25s ease;
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
        .section-padding { padding: 80px 0; }
        .section-title { font-size: 32px; font-weight: 700; color: var(--text-heading); text-align: center; margin-bottom: 12px; }
        .section-subtitle { font-size: 16px; color: var(--text-muted); text-align: center; max-width: 680px; margin: 0 auto 48px; line-height: 1.6; }
        .section-divider { width: 60px; height: 3px; background: var(--accent); margin: 0 auto 16px; border-radius: 2px; }

        /* Header / Nav */
        header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i { color: var(--accent); font-size: 26px; }
        .logo span { color: var(--primary); }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-menu li a:hover { color: var(--primary); background: rgba(43,92,143,0.06); }
        .nav-menu li a.active {
            color: var(--primary);
            background: rgba(43,92,143,0.08);
        }
        .nav-menu li a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .hamburger {
            display: none;
            font-size: 26px;
            background: none;
            border: none;
            color: var(--text-heading);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero .container { position: relative; z-index: 2; width: 100%; }
        .hero-content {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-text { flex: 1 1 50%; min-width: 280px; }
        .hero-text h1 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .hero-text h1 i { color: var(--accent); }
        .hero-text p {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 38px;
            background: var(--accent);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(245,166,35,0.35);
        }
        .hero-cta:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245,166,35,0.45); color: #fff; }
        .hero-cta:active { transform: scale(0.97); }
        .hero-image {
            flex: 1 1 40%;
            min-width: 260px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0,0,0,0.2);
        }
        .hero-image img { width: 100%; height: 320px; object-fit: cover; border-radius: var(--radius); }

        /* Compare Table */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }
        .compare-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 20px 24px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }
        .compare-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
        .compare-card.recommended {
            border: 2px solid var(--primary);
            box-shadow: 0 4px 16px rgba(43,92,143,0.15);
        }
        .compare-card .badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 20px;
            letter-spacing: 1px;
        }
        .compare-card .plan-name { font-size: 20px; font-weight: 700; color: var(--text-heading); margin-bottom: 4px; }
        .compare-card .plan-price { font-size: 28px; font-weight: 800; color: var(--primary); margin: 12px 0 8px; }
        .compare-card .plan-price span { font-size: 14px; font-weight: 400; color: var(--text-muted); }
        .compare-card .plan-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
        .compare-card ul { list-style: none; text-align: left; padding: 0; }
        .compare-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-card ul li:last-child { border-bottom: none; }
        .compare-card ul li i { color: var(--accent); font-size: 14px; width: 18px; }
        .compare-card .btn-outline {
            display: inline-block;
            margin-top: 16px;
            padding: 10px 24px;
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            background: transparent;
        }
        .compare-card .btn-outline:hover { background: var(--primary); color: #fff; }
        .compare-card.recommended .btn-outline { background: var(--primary); color: #fff; }
        .compare-card.recommended .btn-outline:hover { background: var(--primary-dark); }

        /* Level Highlights */
        .level-list { display: flex; flex-direction: column; gap: 24px; max-width: 860px; margin: 0 auto; }
        .level-item {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .level-item:hover { box-shadow: var(--shadow-hover); transform: translateX(4px); }
        .level-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            flex-shrink: 0;
        }
        .level-icon.accent { background: var(--accent); }
        .level-icon.light { background: var(--primary-light); }
        .level-info { flex: 1; }
        .level-info h3 { font-size: 20px; font-weight: 700; color: var(--text-heading); margin-bottom: 4px; }
        .level-info p { font-size: 15px; color: var(--text-muted); margin: 0; }
        .level-tag {
            flex-shrink: 0;
            background: rgba(43,92,143,0.08);
            color: var(--primary);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
        }
        .level-tag.accent { background: rgba(245,166,35,0.12); color: var(--accent-dark); }

        /* Content Preview */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: pointer;
        }
        .content-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .content-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .content-card .card-body { padding: 20px 20px 24px; }
        .content-card .card-body h3 { font-size: 18px; font-weight: 700; color: var(--text-heading); margin-bottom: 8px; line-height: 1.4; }
        .content-card .card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .content-card .card-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; font-size: 13px; color: var(--text-muted); }
        .content-card .card-meta .tag { background: rgba(43,92,143,0.08); color: var(--primary); padding: 2px 12px; border-radius: 12px; font-size: 12px; font-weight: 500; }
        .view-all-link {
            text-align: center;
            margin-top: 36px;
        }
        .view-all-link a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            padding: 10px 28px;
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .view-all-link a:hover { background: var(--primary); color: #fff; }

        /* CMS List */
        .cms-list { display: flex; flex-direction: column; gap: 16px; max-width: 860px; margin: 0 auto; }
        .cms-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 20px;
            flex-wrap: wrap;
        }
        .cms-item:hover { box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
        .cms-item .cms-info { flex: 1; min-width: 200px; }
        .cms-item .cms-info h4 { font-size: 17px; font-weight: 700; color: var(--text-heading); margin-bottom: 4px; }
        .cms-item .cms-info h4 a { color: var(--text-heading); }
        .cms-item .cms-info h4 a:hover { color: var(--primary); }
        .cms-item .cms-info p { font-size: 14px; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin: 4px 0 0; }
        .cms-item .cms-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
            font-size: 13px;
            color: var(--text-muted);
        }
        .cms-item .cms-meta .tag { background: rgba(245,166,35,0.12); color: var(--accent-dark); padding: 2px 12px; border-radius: 12px; font-size: 12px; font-weight: 500; }
        .cms-empty { text-align: center; padding: 48px 20px; color: var(--text-muted); font-size: 16px; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); }

        /* FAQ */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { background: rgba(43,92,143,0.04); }
        .faq-question i { font-size: 18px; color: var(--primary); transition: var(--transition); }
        .faq-question[aria-expanded="true"] i { transform: rotate(45deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open { display: block; }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .cta-section p { font-size: 18px; color: rgba(255,255,255,0.85); max-width: 580px; margin: 0 auto 32px; }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            background: var(--accent);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(245,166,35,0.35);
        }
        .cta-btn:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(245,166,35,0.45); color: #fff; }
        .cta-btn:active { transform: scale(0.97); }

        /* Footer */
        footer {
            background: #1E2A3A;
            color: rgba(255,255,255,0.8);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 12px; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 320px; }
        .footer-links h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
        .footer-links ul { list-style: none; }
        .footer-links ul li { margin-bottom: 8px; }
        .footer-links ul li a { color: rgba(255,255,255,0.6); font-size: 14px; transition: var(--transition); }
        .footer-links ul li a:hover { color: var(--accent); }
        .footer-contact h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
        .footer-contact p { font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
        .footer-contact p i { width: 18px; color: var(--accent); }
        .footer-social { display: flex; gap: 12px; margin-top: 12px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 14px;
            color: rgba(255,255,255,0.4);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .compare-grid { grid-template-columns: repeat(2, 1fr); }
            .content-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                padding: 12px 20px 20px;
                box-shadow: 0 8px 24px rgba(0,0,0,0.10);
                border-bottom: 1px solid var(--border);
                gap: 4px;
            }
            .nav-menu.open { display: flex; }
            .nav-menu li a { padding: 12px 16px; font-size: 16px; }
            .nav-menu li a.active::after { display: none; }
            .section-padding { padding: 48px 0; }
            .section-title { font-size: 26px; }
            .hero { min-height: 400px; }
            .hero-text h1 { font-size: 30px; }
            .hero-text p { font-size: 16px; }
            .hero-image { display: none; }
            .compare-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
            .content-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
            .level-item { flex-direction: column; text-align: center; padding: 20px; }
            .level-tag { align-self: center; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .cms-item { flex-direction: column; }
            .cms-item .cms-meta { width: 100%; justify-content: flex-start; }
            .cta-section h2 { font-size: 28px; }
            .cta-btn { font-size: 17px; padding: 14px 32px; }
        }
        @media (max-width: 520px) {
            .hero-text h1 { font-size: 26px; }
            .hero-cta { font-size: 16px; padding: 12px 28px; width: 100%; justify-content: center; }
            .section-title { font-size: 22px; }
            .section-subtitle { font-size: 14px; }
            .compare-card { padding: 20px 16px; }
            .faq-question { font-size: 15px; padding: 14px 18px; }
            .faq-answer { padding: 0 18px 14px; font-size: 14px; }
        }

        /* Utility */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1E4A6B;
            --primary-light: #2B5C8F;
            --primary-dark: #0F2D44;
            --accent: #F5A623;
            --accent-dark: #D98E1A;
            --bg-body: #F0F4F8;
            --bg-card: #FFFFFF;
            --bg-dark: #1A2A3A;
            --text-primary: #111111;
            --text-body: #333333;
            --text-muted: #777777;
            --text-light: #FFFFFF;
            --border-color: #E5E9ED;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --spacer: 80px;
            --spacer-mobile: 40px;
        }

        /* ===== Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-cn); font-weight: 700; color: var(--text-primary); line-height: 1.3; }
        p { margin-bottom: 1rem; }

        /* ===== 容器 ===== */
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== Header / 导航 ===== */
        header {
            background: #fff;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 68px;
            border-bottom: 1px solid var(--border-color);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-cn);
            letter-spacing: 0.5px;
        }
        .logo i { color: var(--accent); font-size: 24px; }
        .logo span { color: var(--accent); font-weight: 400; }
        .logo:hover { color: var(--primary); opacity: 0.9; }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0;
        }
        .nav-menu li { margin: 0; }
        .nav-menu a {
            display: block;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-menu a:hover {
            color: var(--primary);
            background: rgba(43, 92, 143, 0.06);
        }
        .nav-menu a.active {
            color: var(--primary);
            background: rgba(43, 92, 143, 0.08);
            font-weight: 600;
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 18px;
            right: 18px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger:hover { background: rgba(0,0,0,0.04); }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            color: var(--text-light);
            padding: 100px 0 80px;
            position: relative;
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--bg-body);
            clip-path: ellipse(60% 100% at 50% 100%);
        }
        .hero .container { position: relative; z-index: 2; text-align: center; }
        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 2px;
            text-shadow: 0 4px 16px rgba(0,0,0,0.25);
        }
        .hero h1 i { color: var(--accent); margin-right: 8px; }
        .hero .subtitle {
            font-size: 20px;
            color: rgba(255,255,255,0.9);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }
        .hero .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .hero .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 16px 40px;
            font-size: 18px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(245, 166, 35, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero .btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245, 166, 35, 0.4); }
        .hero .btn-secondary {
            background: rgba(255,255,255,0.12);
            color: #fff;
            padding: 16px 36px;
            font-size: 18px;
            font-weight: 500;
            border: 2px solid rgba(255,255,255,0.35);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(4px);
        }
        .hero .btn-secondary:hover { background: rgba(255,255,255,0.2); border-color: #fff; transform: translateY(-2px); }

        /* ===== 板块通用 ===== */
        .section { padding: var(--spacer) 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 17px;
            max-width: 640px;
            margin: 12px auto 0;
        }
        .section-bg-light { background: var(--bg-card); }

        /* ===== 核心权益卡片 ===== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .benefit-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .benefit-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .benefit-card .icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: #fff;
            font-size: 26px;
            transition: var(--transition);
        }
        .benefit-card:hover .icon { transform: scale(1.08); background: var(--accent); }
        .benefit-card h3 { font-size: 20px; margin-bottom: 10px; color: var(--text-primary); }
        .benefit-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin: 0; }

        /* ===== 权益对比表 ===== */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .compare-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px 32px;
            box-shadow: var(--shadow-sm);
            border: 2px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            text-align: center;
        }
        .compare-card.recommended {
            border-color: var(--accent);
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.2);
            transform: scale(1.02);
        }
        .compare-card.recommended .badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 18px;
            border-radius: 20px;
            letter-spacing: 1px;
            text-transform: uppercase;
            box-shadow: 0 2px 8px rgba(245, 166, 35, 0.3);
        }
        .compare-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
        .compare-card .price { font-size: 14px; color: var(--text-muted); margin-bottom: 18px; }
        .compare-card .price strong { font-size: 28px; color: var(--primary); font-weight: 800; }
        .compare-card.recommended .price strong { color: var(--accent); }
        .compare-card ul { text-align: left; margin: 0; padding: 0; }
        .compare-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-body);
        }
        .compare-card ul li:last-child { border-bottom: none; }
        .compare-card ul li i { color: var(--accent); font-size: 14px; width: 18px; text-align: center; }
        .compare-card ul li .na { color: #ccc; }

        /* ===== 适用场景 ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .scene-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
        .scene-card .img-wrap {
            height: 200px;
            overflow: hidden;
            background: var(--primary);
        }
        .scene-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .scene-card:hover .img-wrap img { transform: scale(1.05); }
        .scene-card .info { padding: 20px 24px 24px; }
        .scene-card .info h3 { font-size: 18px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
        .scene-card .info h3 i { color: var(--accent); }
        .scene-card .info p { font-size: 14px; color: var(--text-muted); margin: 0; line-height: 1.7; }

        /* ===== 流程步骤 ===== */
        .steps {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            counter-reset: step;
            max-width: 960px;
            margin: 0 auto;
        }
        .step-item {
            flex: 1;
            min-width: 180px;
            max-width: 240px;
            text-align: center;
            position: relative;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 16px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            transition: var(--transition);
        }
        .step-item:hover::before { background: var(--accent); }
        .step-item h4 { font-size: 17px; margin-bottom: 6px; }
        .step-item p { font-size: 13px; color: var(--text-muted); margin: 0; line-height: 1.5; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--bg-card);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover { background: rgba(43, 92, 143, 0.04); }
        .faq-item .faq-q i { color: var(--primary); transition: var(--transition); font-size: 18px; }
        .faq-item.active .faq-q i { transform: rotate(45deg); color: var(--accent); }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            background: rgba(240, 244, 248, 0.4);
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 16px 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            color: #fff;
            text-align: center;
            padding: 72px 20px;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-block .container { position: relative; z-index: 2; }
        .cta-block h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .cta-block p { font-size: 18px; color: rgba(255,255,255,0.85); max-width: 540px; margin: 0 auto 28px; }
        .cta-block .btn-cta {
            background: var(--accent);
            color: #fff;
            padding: 18px 52px;
            font-size: 20px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        .cta-block .btn-cta:hover { background: var(--accent-dark); transform: translateY(-3px); box-shadow: 0 10px 32px rgba(245, 166, 35, 0.45); }

        /* ===== Footer ===== */
        footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 22px;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.7; margin: 0; }
        .footer-links h4, .footer-contact h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links ul { margin: 0; }
        .footer-links ul li { margin-bottom: 8px; }
        .footer-links ul li a { color: rgba(255,255,255,0.6); font-size: 14px; transition: var(--transition); }
        .footer-links ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-contact p { font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
        .footer-contact p i { width: 18px; color: var(--accent); }
        .footer-social { display: flex; gap: 12px; margin-top: 14px; }
        .footer-social a {
            width: 38px;
            height: 38px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .benefits-grid { grid-template-columns: repeat(2, 1fr); }
            .compare-grid { grid-template-columns: repeat(2, 1fr); }
            .scene-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero h1 { font-size: 36px; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-menu {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px 24px;
                box-shadow: 0 12px 32px rgba(0,0,0,0.1);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 2px solid var(--border-color);
                gap: 4px;
                z-index: 999;
                pointer-events: none;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-menu a { padding: 12px 16px; font-size: 16px; border-radius: var(--radius-sm); }
            .nav-menu a.active::after { display: none; }
            .nav-menu a.active { background: rgba(43, 92, 143, 0.1); }

            .hero { padding: 60px 0 50px; min-height: auto; }
            .hero h1 { font-size: 28px; }
            .hero .subtitle { font-size: 16px; }
            .hero .btn-primary, .hero .btn-secondary { padding: 14px 28px; font-size: 16px; }

            .section { padding: var(--spacer-mobile) 0; }
            .section-title h2 { font-size: 26px; }
            .benefits-grid { grid-template-columns: 1fr; gap: 16px; }
            .compare-grid { grid-template-columns: 1fr; gap: 16px; }
            .compare-card.recommended { transform: none; }
            .scene-grid { grid-template-columns: 1fr; gap: 16px; }
            .steps { flex-direction: column; align-items: center; gap: 16px; }
            .step-item { max-width: 100%; width: 100%; }
            .cta-block h2 { font-size: 26px; }
            .cta-block .btn-cta { padding: 14px 36px; font-size: 17px; }

            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            footer { padding: 40px 0 0; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .hero h1 { font-size: 24px; }
            .hero .subtitle { font-size: 14px; }
            .hero .btn-group { flex-direction: column; align-items: center; }
            .hero .btn-primary, .hero .btn-secondary { width: 100%; justify-content: center; }
            .section-title h2 { font-size: 22px; }
            .benefit-card { padding: 24px 16px; }
            .compare-card { padding: 20px 16px; }
            .faq-item .faq-q { font-size: 14px; padding: 14px 16px; }
            .faq-item .faq-a { font-size: 13px; padding: 0 16px; }
            .faq-item.active .faq-a { padding: 12px 16px 16px; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .badge-tag {
            display: inline-block;
            background: rgba(245, 166, 35, 0.15);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1E4A6B;
            --primary-dark: #15384F;
            --primary-light: #2B5C8F;
            --accent: #F5A623;
            --accent-dark: #D4891A;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #333333;
            --text-title: #111111;
            --text-muted: #777777;
            --border: #E5E9F0;
            --shadow: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-hover: 0 6px 20px rgba(0,0,0,0.10);
            --radius: 10px;
            --radius-sm: 6px;
            --transition: 0.25s ease;
            --font-cn: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
            --font-en: 'Inter',Helvetica,sans-serif;
            --header-h: 60px;
            --container-w: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-cn);
            color: var(--text);
            background: var(--bg);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover, a:focus { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        .container { max-width: var(--container-w); margin: 0 auto; padding: 0 20px; }

        /* ===== 导航 ===== */
        header {
            background: var(--card-bg);
            box-shadow: 0 1px 0 var(--border);
            position: sticky; top: 0; z-index: 100;
            height: var(--header-h);
        }
        .header-inner {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            font-family: var(--font-cn);
        }
        .logo i { color: var(--accent); font-size: 26px; }
        .logo span { color: var(--primary); font-weight: 600; }
        .nav-menu {
            display: flex;
            gap: 24px;
            align-items: center;
        }
        .nav-menu li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-menu li a::after {
            content: '';
            position: absolute;
            left: 0; bottom: -2px;
            width: 0; height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav-menu li a:hover::after,
        .nav-menu li a:focus::after,
        .nav-menu li a.active::after { width: 100%; }
        .nav-menu li a:hover,
        .nav-menu li a:focus { color: var(--primary); }
        .nav-menu li a.active { color: var(--primary); font-weight: 600; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-title);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--bg);
            padding: 16px 0 0;
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { color: #ccc; }
        .breadcrumb .current { color: var(--text); font-weight: 500; max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

        /* ===== 文章主区 ===== */
        .article-main {
            padding: 40px 0 80px;
        }
        .article-wrapper {
            max-width: 800px;
            margin: 0 auto;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 48px;
        }
        .article-wrapper h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
        }
        .article-meta i { margin-right: 6px; color: var(--primary-light); }
        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 1.2em;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-title);
            margin: 1.6em 0 0.6em;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-title);
            margin: 1.4em 0 0.5em;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary-light);
            background: #F0F4F8;
            padding: 16px 20px;
            margin: 1.2em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #444;
        }
        .article-body ul, .article-body ol {
            margin: 1em 0;
            padding-left: 1.8em;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-sm);
            margin: 1.2em auto;
            display: block;
        }
        .article-body a { color: var(--primary-light); text-decoration: underline; }
        .article-body a:hover { color: var(--primary-dark); }

        /* ===== 内容未找到 ===== */
        .not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            max-width: 600px;
            margin: 40px auto;
        }
        .not-found i { font-size: 64px; color: var(--text-muted); margin-bottom: 20px; }
        .not-found h2 { font-size: 28px; color: var(--text-title); margin-bottom: 12px; }
        .not-found p { color: var(--text-muted); margin-bottom: 24px; font-size: 16px; }

        /* ===== 相关推荐 ===== */
        .related-section {
            max-width: 800px;
            margin: 48px auto 0;
        }
        .related-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h2 i { color: var(--accent); }
        .related-scroll {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .related-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .related-card figure {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #E8EDF3;
        }
        .related-card figure img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover figure img { transform: scale(1.05); }
        .related-card .card-body {
            padding: 14px 16px 16px;
        }
        .related-card .card-body h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 13px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .related-card .card-body .date {
            font-size: 12px;
            color: #aaa;
        }

        /* ===== 文章底部按钮 ===== */
        .article-footer-bar {
            max-width: 800px;
            margin: 32px auto 0;
            display: flex;
            justify-content: center;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .btn-back:hover, .btn-back:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: scale(0.98);
        }
        .btn-back:active { transform: scale(0.95); }
        .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .btn-home:hover, .btn-home:focus {
            background: var(--accent-dark);
            color: #fff;
            transform: scale(0.98);
        }

        /* ===== 页脚 ===== */
        footer {
            background: #1E2A3A;
            color: #CCD5E0;
            padding: 60px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand .logo span { color: #8BB8D8; }
        .footer-brand p { line-height: 1.7; color: #A0B0C0; }
        .footer-links h4,
        .footer-contact h4 {
            font-size: 16px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links ul li { margin-bottom: 10px; }
        .footer-links ul li a { color: #A0B0C0; transition: color var(--transition); }
        .footer-links ul li a:hover { color: var(--accent); }
        .footer-contact p { margin-bottom: 10px; color: #A0B0C0; }
        .footer-contact p i { width: 20px; margin-right: 6px; color: var(--accent); }
        .footer-social { display: flex; gap: 16px; margin-top: 14px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px; height: 38px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
            color: #CCD5E0;
            font-size: 18px;
            transition: background var(--transition), color var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #1E2A3A;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #7A8A9A;
        }

        /* ===== 按钮通用 ===== */
        .button { border-radius: var(--radius-sm); transition: all var(--transition); cursor: pointer; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-scroll { grid-template-columns: repeat(2, 1fr); }
            .article-wrapper { padding: 32px 28px; }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0; right: 0;
                background: var(--card-bg);
                flex-direction: column;
                padding: 16px 24px;
                gap: 8px;
                box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            }
            .nav-menu.open { display: flex; }
            .nav-menu li a { padding: 10px 0; font-size: 16px; display: block; }
            .hamburger { display: block; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .article-wrapper { padding: 24px 18px; }
            .article-wrapper h1 { font-size: 24px; }
            .breadcrumb .current { max-width: 180px; }
            .related-scroll { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .related-section h2 { font-size: 20px; }
        }

        @media (max-width: 520px) {
            .related-scroll { grid-template-columns: 1fr; }
            .article-wrapper { padding: 18px 14px; }
            .article-wrapper h1 { font-size: 20px; }
            .article-meta { flex-direction: column; gap: 6px; }
            .breadcrumb { font-size: 12px; }
            .breadcrumb .current { max-width: 120px; }
            .btn-back, .btn-home { width: 100%; justify-content: center; }
        }

        @media (min-width: 769px) {
            .nav-menu { display: flex !important; }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1E4A6B;
            --primary-light: #2B5C8F;
            --primary-dark: #12324A;
            --accent: #F5A623;
            --accent-dark: #D4891A;
            --bg-light: #F7F9FC;
            --bg-card: #FFFFFF;
            --text-dark: #111111;
            --text-body: #333333;
            --text-weak: #777777;
            --text-white: #FFFFFF;
            --border-color: #E8ECF1;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-hover: 0 6px 20px rgba(0,0,0,0.10);
            --shadow-btn: 0 4px 8px rgba(0,0,0,0.15);
            --transition: all 0.3s ease;
            --font-sans: 'PingFang SC','Microsoft YaHei','Noto Sans SC','Inter',Helvetica,sans-serif;
            --container-max: 1200px;
            --spacer-section: 80px;
            --spacer-section-mobile: 40px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--primary-light); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        button, input, select, textarea { font-family: var(--font-sans); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* ===== Header & Navigation ===== */
        header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: 64px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo span { color: var(--accent); font-weight: 400; }
        .logo:hover { color: var(--primary); }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-menu li a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-menu li a.active {
            color: var(--primary);
            background: rgba(30,74,107,0.08);
        }
        .nav-menu li a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger:hover { background: var(--bg-light); }
        .hamburger:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

        /* ===== Hero ===== */
        .level-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 100px 0 80px;
            position: relative;
            overflow: hidden;
            min-height: 460px;
            display: flex;
            align-items: center;
        }
        .level-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .level-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .level-hero h1 {
            font-size: 3rem;
            color: var(--text-white);
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.25);
        }
        .level-hero h1 i { color: var(--accent); margin-right: 6px; }
        .level-hero .hero-sub {
            font-size: 1.25rem;
            color: rgba(255,255,255,0.85);
            max-width: 700px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .level-hero .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: var(--accent);
            color: var(--text-white);
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-btn);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .level-hero .hero-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(245,166,35,0.4);
        }
        .level-hero .hero-cta:active { transform: scale(0.97); }
        .hero-badge-row {
            display: flex;
            justify-content: center;
            gap: 24px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .hero-badge {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            padding: 10px 24px;
            border-radius: 30px;
            color: var(--text-white);
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255,255,255,0.18);
        }
        .hero-badge i { color: var(--accent); }

        /* ===== Common Section ===== */
        .section {
            padding: var(--spacer-section) 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-title {
            text-align: center;
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-subtitle {
            text-align: center;
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 660px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 16px auto 32px;
        }

        /* ===== Level Ladder ===== */
        .level-ladder {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 860px;
            margin: 0 auto;
        }
        .ladder-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px 28px;
            box-shadow: var(--shadow-card);
            border-left: 6px solid var(--primary);
            transition: var(--transition);
        }
        .ladder-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(6px);
        }
        .ladder-item .level-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .ladder-item .level-icon.accent { color: var(--accent); background: rgba(245,166,35,0.12); }
        .ladder-item .level-icon.gem { color: #E74C3C; background: rgba(231,76,60,0.10); }
        .ladder-item .level-info { flex: 1; }
        .ladder-item .level-info h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .ladder-item .level-info p {
            font-size: 0.92rem;
            color: var(--text-weak);
            margin: 0;
        }
        .ladder-item .level-badge {
            padding: 6px 18px;
            border-radius: 20px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 600;
            flex-shrink: 0;
        }
        .ladder-item .level-badge.accent { background: var(--accent); }

        /* ===== Level Comparison ===== */
        .comp-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }
        .comp-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            box-shadow: var(--shadow-card);
            border: 2px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            text-align: center;
        }
        .comp-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .comp-card.featured {
            border-color: var(--accent);
            box-shadow: 0 4px 20px rgba(245,166,35,0.18);
        }
        .comp-card .recommend-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: var(--text-white);
            padding: 4px 20px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .comp-card .comp-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .comp-card.featured .comp-icon { color: var(--accent); }
        .comp-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .comp-card .comp-level {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 16px;
        }
        .comp-card ul { text-align: left; padding: 0; }
        .comp-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comp-card ul li:last-child { border-bottom: none; }
        .comp-card ul li i { color: var(--accent); font-size: 0.8rem; width: 18px; text-align: center; }
        .comp-card .comp-price {
            margin-top: 16px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
        }
        .comp-card.featured .comp-price { color: var(--accent); }

        /* ===== Scene Cards ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scene-card .scene-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .scene-card .scene-body {
            padding: 24px 20px;
        }
        .scene-card .scene-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .scene-card .scene-body p {
            font-size: 0.92rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== Process ===== */
        .process-steps {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            max-width: 960px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .process-step {
            flex: 1;
            min-width: 180px;
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 12px;
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-weak);
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            transition: var(--transition);
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { background: var(--bg-light); }
        .faq-question:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
        .faq-question i { transition: var(--transition); color: var(--primary); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            background: var(--bg-card);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 2.2rem;
            color: var(--text-white);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 48px;
            background: var(--accent);
            color: var(--text-white);
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-btn);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245,166,35,0.4);
        }
        .cta-section .cta-btn:active { transform: scale(0.97); }

        /* ===== Footer ===== */
        footer {
            background: #1E2A3A;
            color: rgba(255,255,255,0.7);
            padding: 50px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 340px;
        }
        .footer-links h4, .footer-contact h4 {
            color: var(--text-white);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links ul li { margin-bottom: 10px; }
        .footer-links ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-contact p {
            font-size: 0.9rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255,255,255,0.6);
        }
        .footer-contact p i { width: 20px; color: var(--accent); }
        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--text-white);
            transform: scale(1.1);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .comp-grid { grid-template-columns: repeat(2, 1fr); }
            .scene-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-menu {
                display: none;
                flex-direction: column;
                background: var(--bg-card);
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                padding: 16px 20px 24px;
                box-shadow: 0 8px 24px rgba(0,0,0,0.10);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                gap: 4px;
            }
            .nav-menu.open { display: flex; }
            .nav-menu li a { padding: 12px 16px; border-radius: var(--radius-sm); }
            .nav-menu li a.active::after { display: none; }
            .nav-menu li a.active { background: rgba(30,74,107,0.08); }

            .level-hero { padding: 60px 0 50px; min-height: auto; }
            .level-hero h1 { font-size: 2rem; }
            .level-hero .hero-sub { font-size: 1.05rem; }

            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 0.95rem; margin-bottom: 32px; }

            .comp-grid { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }
            .scene-grid { grid-template-columns: 1fr; }
            .process-steps { flex-direction: column; align-items: center; }
            .process-step { min-width: 100%; max-width: 400px; }

            .ladder-item { flex-wrap: wrap; padding: 16px 20px; }
            .ladder-item .level-badge { margin-left: auto; }

            .footer-grid { grid-template-columns: 1fr; gap: 28px; text-align: center; }
            .footer-brand p { max-width: 100%; }
            .footer-contact p { justify-content: center; }
            .footer-social { justify-content: center; }

            .cta-section h2 { font-size: 1.6rem; }
            .cta-section .cta-btn { padding: 14px 32px; font-size: 1rem; }

            :root {
                --spacer-section: 48px;
                --spacer-section-mobile: 28px;
            }
            .section { padding: var(--spacer-section-mobile) 0; }
        }
        @media (max-width: 520px) {
            .level-hero h1 { font-size: 1.6rem; }
            .level-hero .hero-sub { font-size: 0.95rem; }
            .hero-badge-row { gap: 12px; }
            .hero-badge { font-size: 0.8rem; padding: 8px 16px; }
            .ladder-item .level-icon { width: 44px; height: 44px; font-size: 1.3rem; }
            .ladder-item .level-info h3 { font-size: 1rem; }
            .comp-card { padding: 20px 14px; }
            .faq-question { font-size: 0.92rem; padding: 14px 16px; }
            .faq-answer { padding: 0 16px; }
            .faq-item.open .faq-answer { padding: 0 16px 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Foundation override ===== */
        .grid-container { max-width: var(--container-max); padding: 0 20px; }
        .grid-x { margin: 0 -10px; }
        .cell { padding: 0 10px; }
        .button { font-family: var(--font-sans); }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1E4A6B;
            --primary-dark: #0F2D44;
            --primary-light: #2B6B96;
            --accent: #F5A623;
            --accent-dark: #D4890F;
            --accent-light: #FFD180;
            --bg-body: #0B1A26;
            --bg-card: #132A3A;
            --bg-card-hover: #1A3A4F;
            --bg-section-alt: #0E2030;
            --text-primary: #F0F4F8;
            --text-secondary: #B0C4D8;
            --text-muted: #6A8CA8;
            --border-color: #1E3D52;
            --border-light: rgba(245, 166, 35, 0.2);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --radius: 12px;
            --radius-sm: 6px;
            --radius-lg: 20px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-en: 'Inter', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
        }
        h3 {
            font-size: 1.6rem;
        }
        h4 {
            font-size: 1.25rem;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .section-title {
            text-align: center;
            margin-bottom: 0.5rem;
            font-size: 2.2rem;
            position: relative;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 3rem auto;
        }
        .section-subtitle i {
            color: var(--accent);
            margin: 0 4px;
        }
        .accent-text {
            color: var(--accent);
        }
        .highlight-glow {
            text-shadow: 0 0 30px rgba(245, 166, 35, 0.15);
        }

        /* ===== Header & Navigation ===== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(11, 26, 38, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(30, 61, 82, 0.5);
            z-index: 1000;
            transition: var(--transition);
        }
        header.scrolled {
            background: rgba(11, 26, 38, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            font-family: var(--font-en);
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo span {
            color: var(--accent);
            font-weight: 400;
        }
        .logo:hover {
            color: var(--text-primary);
            opacity: 0.9;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0;
            padding: 0;
        }
        .nav-menu li {
            margin: 0;
        }
        .nav-menu a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-menu a:hover {
            color: var(--text-primary);
            background: rgba(245, 166, 35, 0.08);
        }
        .nav-menu a.active {
            color: var(--accent);
            background: rgba(245, 166, 35, 0.12);
            box-shadow: inset 0 -2px 0 var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: linear-gradient(135deg, #0B1A26 0%, #132A3A 40%, #1A3A4F 70%, #0E2030 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
            animation: heroParallax 20s ease-in-out infinite alternate;
        }
        @keyframes heroParallax {
            0% {
                transform: scale(1) translate(0, 0);
            }
            100% {
                transform: scale(1.05) translate(-10px, -10px);
            }
        }
        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 50% 80%, rgba(245, 166, 35, 0.06) 0%, transparent 70%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.25);
            color: var(--accent);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            background: linear-gradient(135deg, #F0F4F8 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 2rem auto;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-family: var(--font-sans);
            letter-spacing: 0.5px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0B1A26;
            box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 8px 40px rgba(245, 166, 35, 0.45);
            color: #0B1A26;
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
            background: rgba(245, 166, 35, 0.05);
        }
        .btn-outline:active {
            transform: scale(0.97);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: #070F17;
        }

        /* ===== Service Highlights ===== */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 20px;
        }
        .highlight-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .highlight-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: var(--transition);
        }
        .highlight-card:hover {
            transform: translateY(-6px);
            border-color: rgba(245, 166, 35, 0.3);
            box-shadow: var(--shadow-lg);
            background: var(--bg-card-hover);
        }
        .highlight-card:hover::before {
            opacity: 1;
        }
        .highlight-icon {
            width: 60px;
            height: 60px;
            background: rgba(245, 166, 35, 0.1);
            border: 1px solid rgba(245, 166, 35, 0.2);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .highlight-card:hover .highlight-icon {
            background: rgba(245, 166, 35, 0.18);
            transform: scale(1.05);
        }
        .highlight-card h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        .highlight-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Service Content Cards ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            margin-top: 20px;
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 166, 35, 0.25);
            box-shadow: var(--shadow-lg);
        }
        .service-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--border-color);
        }
        .service-card .card-body {
            padding: 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-tag {
            display: inline-block;
            background: rgba(245, 166, 35, 0.1);
            color: var(--accent);
            font-size: 0.75rem;
            padding: 4px 14px;
            border-radius: 40px;
            margin-bottom: 12px;
            align-self: flex-start;
            border: 1px solid rgba(245, 166, 35, 0.15);
        }
        .service-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            flex: 1;
        }
        .service-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }
        .service-card .card-footer .btn-sm {
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            background: rgba(245, 166, 35, 0.1);
            color: var(--accent);
            border: 1px solid rgba(245, 166, 35, 0.2);
            transition: var(--transition);
            cursor: pointer;
        }
        .service-card .card-footer .btn-sm:hover {
            background: var(--accent);
            color: #0B1A26;
            border-color: var(--accent);
        }
        .service-card .card-footer .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== Scenarios ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 20px;
        }
        .scenario-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 166, 35, 0.2);
            box-shadow: var(--shadow-md);
        }
        .scenario-card .icon-wrap {
            width: 72px;
            height: 72px;
            margin: 0 auto 18px;
            background: rgba(245, 166, 35, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--accent);
            border: 1px solid rgba(245, 166, 35, 0.15);
            transition: var(--transition);
        }
        .scenario-card:hover .icon-wrap {
            background: rgba(245, 166, 35, 0.15);
            transform: scale(1.08);
        }
        .scenario-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Process / Timeline ===== */
        .process-timeline {
            position: relative;
            max-width: 800px;
            margin: 40px auto 0;
            padding: 0 20px;
        }
        .process-timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 40px;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent), rgba(245, 166, 35, 0.1));
            border-radius: 4px;
        }
        .process-step {
            display: flex;
            gap: 28px;
            margin-bottom: 36px;
            position: relative;
            align-items: flex-start;
        }
        .process-step:last-child {
            margin-bottom: 0;
        }
        .step-number {
            flex-shrink: 0;
            width: 80px;
            height: 80px;
            background: var(--bg-card);
            border: 2px solid var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            position: relative;
            z-index: 2;
            transition: var(--transition);
        }
        .process-step:hover .step-number {
            background: var(--accent);
            color: #0B1A26;
            box-shadow: 0 0 30px rgba(245, 166, 35, 0.3);
        }
        .step-content {
            flex: 1;
            padding-top: 12px;
        }
        .step-content h4 {
            font-size: 1.15rem;
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Community / Testimonials ===== */
        .community-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            margin-top: 20px;
        }
        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .testimonial-card:hover {
            border-color: rgba(245, 166, 35, 0.2);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .testimonial-card .stars {
            color: var(--accent);
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 2px;
        }
        .testimonial-card blockquote {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            font-style: italic;
            border-left: 3px solid var(--accent);
            padding-left: 20px;
        }
        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .author .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 700;
            font-size: 1.1rem;
            border: 1px solid rgba(245, 166, 35, 0.2);
        }
        .testimonial-card .author .name {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .testimonial-card .author .role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 20px auto 0;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 166, 35, 0.2);
        }
        .faq-question {
            width: 100%;
            padding: 20px 28px;
            background: none;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            font-family: var(--font-sans);
            text-align: left;
            gap: 16px;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question .icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .faq-item.active .faq-question .icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: #0B1A26;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 28px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 28px 20px 28px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0E2030 0%, #1A3A4F 100%);
            padding: 80px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 50% 50%, rgba(245, 166, 35, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 2rem auto;
        }
        .cta-section .btn {
            font-size: 1.05rem;
            padding: 16px 44px;
        }
        .cta-section .btn i {
            font-size: 1rem;
        }

        /* ===== Footer ===== */
        footer {
            background: #070F17;
            padding: 60px 0 0;
            border-top: 1px solid var(--border-color);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-links h4,
        .footer-contact h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-links h4::after,
        .footer-contact h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact p i {
            width: 20px;
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .footer-social a:hover {
            background: rgba(245, 166, 35, 0.1);
            color: var(--accent);
            border-color: rgba(245, 166, 35, 0.2);
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== Scroll To Top ===== */
        .scroll-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: #0B1A26;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
            transition: var(--transition);
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
        }
        .scroll-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(245, 166, 35, 0.45);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .highlights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .community-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .hero h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(11, 26, 38, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                font-size: 1rem;
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            .hero {
                min-height: 70vh;
                padding: 100px 16px 60px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-item .num {
                font-size: 1.6rem;
            }
            .section {
                padding: 48px 0;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .service-grid {
                gap: 20px;
            }
            .community-grid {
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .process-timeline::before {
                left: 24px;
            }
            .step-number {
                width: 56px;
                height: 56px;
                font-size: 1.2rem;
            }
            .process-step {
                gap: 16px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 48px 16px;
            }
            .scroll-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
                padding: 12px 24px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            h2 {
                font-size: 1.4rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px 18px;
            }
            .testimonial-card blockquote {
                font-size: 0.92rem;
                padding-left: 14px;
            }
            .logo {
                font-size: 1.15rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
        }