/* roulang page: index */
:root {
            --primary: #7A5C3E;
            --primary-dark: #5A3E28;
            --primary-light: #A38566;
            --secondary: #2D4A3E;
            --secondary-light: #3E6B53;
            --gold: #CB9A5F;
            --gold-light: #E8C89E;
            --bg: #F9F6F1;
            --bg-dark: #1E1812;
            --bg-deep: #14100C;
            --surface: #FFFFFF;
            --text: #2C241B;
            --text-light: #5C4F42;
            --muted: #8A7B6E;
            --border: #E8DDD0;
            --border-dark: #D6C6B3;
            --radius-sm: 10px;
            --radius: 18px;
            --radius-lg: 28px;
            --shadow: 0 6px 24px rgba(44, 36, 27, 0.08);
            --shadow-lg: 0 16px 48px rgba(44, 36, 27, 0.14);
            --shadow-gold: 0 8px 30px rgba(203, 154, 95, 0.25);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 76px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 90px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(203, 154, 95, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 18px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text);
            letter-spacing: -0.5px;
        }
        .section-desc {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.8;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--gold) 0%, var(--primary) 100%);
            color: #fff;
            box-shadow: var(--shadow-gold);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(203, 154, 95, 0.4);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--gold);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(203, 154, 95, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        }
        .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
        }
        .btn-dark {
            background: var(--bg-dark);
            color: var(--gold-light);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .btn-dark:hover {
            background: #2A221A;
            transform: translateY(-2px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
        }
        .badge-gold {
            background: linear-gradient(135deg, rgba(203, 154, 95, 0.25), rgba(203, 154, 95, 0.1));
            border-color: rgba(203, 154, 95, 0.4);
            color: var(--gold-light);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 32px);
            max-width: 1280px;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-radius: 60px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            padding: 10px 20px;
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.14);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--gold), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 4px 16px rgba(203, 154, 95, 0.4);
            flex-shrink: 0;
        }
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-main {
            font-size: 17px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
        }
        .logo-sub {
            font-size: 11px;
            color: var(--muted);
            letter-spacing: 1.5px;
            margin-top: 2px;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(122, 92, 62, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(122, 92, 62, 0.1);
        }
        .nav-cta {
            margin-left: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--gold), var(--primary));
            color: #fff !important;
            font-size: 14px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(203, 154, 95, 0.3);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(203, 154, 95, 0.45);
        }
        .nav-toggle {
            display: none;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--bg);
            border: 1px solid var(--border);
            font-size: 18px;
            color: var(--text);
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: calc(100% + 10px);
            left: 16px;
            right: 16px;
            background: #fff;
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
            padding: 20px;
            border: 1px solid var(--border);
        }
        .mobile-menu.active {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 20px;
            border-radius: 14px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            transition: var(--transition);
        }
        .mobile-menu a:hover {
            background: var(--bg);
            color: var(--primary);
        }
        .mobile-menu a.active {
            background: rgba(203, 154, 95, 0.15);
            color: var(--primary);
        }
        .mobile-menu .nav-cta-mobile {
            margin-top: 12px;
            justify-content: center;
            background: linear-gradient(135deg, var(--gold), var(--primary));
            color: #fff !important;
            border-radius: 50px;
            text-align: center;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 720px;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 16, 12, 0.65) 0%, rgba(20, 16, 12, 0.8) 60%, rgba(20, 16, 12, 0.92) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 960px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .hero-badge-wrap {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .hero-badge-wrap .badge {
            font-size: 13px;
            padding: 8px 20px;
        }
        .hero h1 {
            font-size: 46px;
            font-weight: 900;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 22px;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .hero-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.9;
            max-width: 720px;
            margin: 0 auto 36px;
        }
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }
        .hero-actions .btn {
            min-width: 180px;
            padding: 16px 36px;
            font-size: 16px;
        }
        .hero-qualification {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 8px 20px;
            border-radius: 30px;
            margin-bottom: 40px;
        }
        .hero-qualification i {
            color: var(--gold);
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 44px;
            flex-wrap: wrap;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            max-width: 700px;
            margin: 0 auto;
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-num {
            font-size: 36px;
            font-weight: 900;
            color: var(--gold-light);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
            letter-spacing: 1px;
        }

        /* ===== Pain Points ===== */
        .pain-points {
            background: var(--bg);
        }
        .pain-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .pain-image-wrap {
            position: relative;
        }
        .pain-image-wrap img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
        }
        .pain-image-card {
            position: absolute;
            bottom: 24px;
            right: -12px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            border: 1px solid var(--border);
        }
        .pain-image-card i {
            font-size: 28px;
            color: var(--gold);
        }
        .pain-image-card strong {
            font-size: 22px;
            color: var(--text);
            font-weight: 800;
        }
        .pain-image-card span {
            font-size: 13px;
            color: var(--muted);
        }
        .pain-list {
            margin-top: 30px;
        }
        .pain-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
        }
        .pain-item:last-child {
            border-bottom: none;
        }
        .pain-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(203, 154, 95, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .pain-text h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .pain-text p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Features ===== */
        .features {
            background: var(--surface);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 36px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(135deg, var(--gold), var(--primary));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            background: #fff;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(203, 154, 95, 0.15), rgba(122, 92, 62, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 22px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Steps ===== */
        .steps {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
        }
        .steps::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 16, 12, 0.9), rgba(20, 16, 12, 0.82));
        }
        .steps .section-header {
            position: relative;
            z-index: 2;
        }
        .steps .section-title {
            color: #fff;
        }
        .steps .section-desc {
            color: rgba(255, 255, 255, 0.8);
        }
        .steps .section-tag {
            background: rgba(203, 154, 95, 0.2);
            color: var(--gold-light);
        }
        .steps-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 20px;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 40px 32px;
            backdrop-filter: blur(12px);
            transition: var(--transition);
            text-align: center;
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-5px);
            border-color: rgba(203, 154, 95, 0.4);
        }
        .step-num {
            font-size: 56px;
            font-weight: 900;
            color: transparent;
            -webkit-text-stroke: 2px var(--gold);
            line-height: 1;
            margin-bottom: 18px;
        }
        .step-card h3 {
            font-size: 21px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .step-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--surface);
            padding: 80px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .stat-block {
            text-align: center;
            padding: 30px 20px;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-block:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .stat-block .num {
            font-size: 48px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-block .label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 600;
        }

        /* ===== Insight ===== */
        .insight {
            background: var(--bg);
        }
        .insight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .insight-image {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }
        .insight-quote {
            background: var(--surface);
            border-left: 4px solid var(--gold);
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 28px 30px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .insight-quote p {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.7;
            color: var(--text);
            font-style: italic;
        }
        .insight-quote cite {
            display: block;
            font-style: normal;
            font-size: 14px;
            color: var(--muted);
            margin-top: 12px;
            font-weight: 500;
        }
        .insight-list {
            display: grid;
            gap: 16px;
        }
        .insight-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 18px 20px;
            background: var(--surface);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .insight-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .insight-item i {
            color: var(--gold);
            font-size: 20px;
            margin-top: 2px;
        }
        .insight-item p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== News ===== */
        .news {
            background: var(--surface);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 48px;
        }
        .news-list {
            display: grid;
            gap: 0;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .news-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 26px 30px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: var(--bg);
            padding-left: 36px;
        }
        .news-date {
            font-size: 13px;
            color: var(--muted);
            background: var(--bg);
            border-radius: 10px;
            padding: 6px 12px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: var(--transition);
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .news-tags {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px;
            border: 1px solid var(--border);
        }
        .news-tags h4 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 18px;
            color: var(--text);
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-list .tag {
            padding: 8px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
        }
        .tag-list .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .news-feature-card {
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            position: relative;
            box-shadow: var(--shadow);
        }
        .news-feature-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .news-feature-body {
            padding: 22px;
            background: #fff;
        }
        .news-feature-body h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
            line-height: 1.5;
        }
        .news-feature-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .news-feature-body a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .news-feature-body a:hover {
            color: var(--gold);
        }

        /* ===== Testimonials ===== */
        .testimonials {
            background: var(--bg);
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 30px;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }
        .testimonial-card::before {
            content: '\201C';
            position: absolute;
            top: 12px;
            left: 24px;
            font-size: 70px;
            font-family: Georgia, serif;
            color: rgba(203, 154, 95, 0.15);
            line-height: 1;
        }
        .testimonial-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .testimonial-stars {
            color: var(--gold);
            font-size: 16px;
            margin-bottom: 16px;
        }
        .testimonial-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid var(--border);
            padding-top: 18px;
        }
        .testimonial-avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--gold), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 17px;
        }
        .testimonial-author strong {
            font-size: 15px;
            color: var(--text);
            display: block;
        }
        .testimonial-author span {
            font-size: 13px;
            color: var(--muted);
        }

        /* ===== FAQ ===== */
        .faq {
            background: var(--surface);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-list .accordion-item {
            background: var(--bg);
            border-radius: var(--radius);
            margin-bottom: 16px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-list .accordion-item:hover {
            border-color: var(--primary-light);
        }
        .faq-list .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 30px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            background: transparent;
        }
        .faq-list .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--gold);
            transition: var(--transition);
        }
        .faq-list .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
        }
        .faq-list .accordion-item.is-active .accordion-title {
            color: var(--primary);
        }
        .faq-list .accordion-content {
            display: none;
            padding: 0 30px 24px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 20px;
        }
        .faq-list .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            padding: 80px 0;
            text-align: center;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 16, 12, 0.88), rgba(20, 16, 12, 0.94));
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 40px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-note {
            margin-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text .logo-main {
            color: #fff;
        }
        .footer-brand .logo-text .logo-sub {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 20px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--gold-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 70px 0;
            }
            .site-nav .nav-link {
                padding: 8px 16px;
                font-size: 14px;
            }
            .hero h1 {
                font-size: 38px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pain-grid,
            .insight-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .pain-image-wrap {
                max-width: 90%;
                margin: 0 auto;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
            }
            .site-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .hero {
                min-height: auto;
                padding: 130px 0 60px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-stats {
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .step-card {
                padding: 30px 24px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .section-title {
                font-size: 30px;
            }
            .cta-inner h2 {
                font-size: 32px;
            }
        }
        @media (max-width: 520px) {
            .site-header {
                padding: 8px 14px;
                border-radius: 40px;
                top: 12px;
                width: calc(100% - 20px);
            }
            .logo-main {
                font-size: 13px;
            }
            .logo-sub {
                font-size: 9px;
            }
            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 16px;
            }
            .hero {
                padding: 110px 0 50px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-badge-wrap {
                gap: 8px;
            }
            .hero-badge-wrap .badge {
                font-size: 11px;
                padding: 6px 12px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                padding: 14px 24px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .hero-stat-num {
                font-size: 30px;
            }
            .section {
                padding: 56px 0;
            }
            .pain-image-card {
                right: 8px;
                padding: 14px 16px;
            }
            .pain-image-card strong {
                font-size: 18px;
            }
            .step-num {
                font-size: 44px;
            }
            .stat-block .num {
                font-size: 38px;
            }
            .faq-list .accordion-title {
                font-size: 15px;
                padding: 18px 20px;
            }
            .faq-list .accordion-content {
                padding: 0 20px 18px;
                padding-top: 16px;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .cta-buttons {
                flex-direction: column;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c19a6b;
            --primary-light: #d4b48c;
            --primary-dark: #8c6f4f;
            --accent: #2d5a3d;
            --bg-dark: #0a0f0c;
            --bg-surface: #111916;
            --bg-card: #1a2420;
            --border: #2b3a33;
            --border-light: rgba(193, 154, 107, .12);
            --text-main: #e8e0d2;
            --text-sub: #9aa79f;
            --text-dim: #6b7a72;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 8px 30px rgba(0, 0, 0, .35);
            --shadow-hover: 0 14px 40px rgba(0, 0, 0, .5);
            --transition: all .3s ease;
            --font-main: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --gradient-hero: linear-gradient(135deg, rgba(10, 15, 12, .92) 0%, rgba(10, 15, 12, .75) 45%, rgba(45, 90, 61, .4) 100%);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-main);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
        }

        /* ===== 通用 Section ===== */
        .section {
            padding: 90px 0;
            position: relative;
        }
        .section-dark {
            background: var(--bg-surface);
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }
        .section-head .section-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--bg-dark);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            color: var(--bg-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(193, 154, 107, .3);
        }
        .btn-outline {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(193, 154, 107, .1);
            border-color: var(--primary-light);
            color: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-block {
            display: block;
            width: 100%;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 16px;
        }

        /* ===== Header / 悬浮胶囊导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 20px;
            pointer-events: none;
        }
        .header-bar {
            max-width: 1200px;
            margin: 0 auto;
            pointer-events: auto;
            background: rgba(10, 15, 12, .82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-light);
            border-radius: 60px;
            padding: 10px 18px 10px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, .45);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-dark);
            font-size: 16px;
            flex-shrink: 0;
        }
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-main {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: .5px;
        }
        .logo-sub {
            font-size: 11px;
            color: var(--text-sub);
            letter-spacing: 1px;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, .06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(193, 154, 107, .12);
            font-weight: 600;
        }
        .nav-cta {
            padding: 10px 22px;
            border-radius: 40px;
            background: var(--primary);
            color: var(--bg-dark);
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary-light);
            color: var(--bg-dark);
            transform: scale(1.03);
            box-shadow: 0 6px 20px rgba(193, 154, 107, .3);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 22px;
            padding: 6px;
            border-radius: 8px;
        }
        .mobile-toggle:focus {
            outline: 2px solid var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 160px 0 100px;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--gradient-hero);
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: auto 0 0 0;
            height: 120px;
            background: linear-gradient(transparent, var(--bg-dark));
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content {
            padding-right: 20px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 40px;
            background: rgba(193, 154, 107, .15);
            border: 1px solid var(--border-light);
            color: var(--primary-light);
            font-size: 13px;
            letter-spacing: 1px;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i {
            font-size: 14px;
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 20px;
            color: var(--text-main);
        }
        .hero h1 span {
            color: var(--primary);
        }
        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-sub);
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 邀请卡（裂变） ===== */
        .invite-card {
            background: rgba(17, 25, 22, .8);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border-light);
            border-radius: 20px;
            padding: 36px 32px;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }
        .invite-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(193, 154, 107, .15), transparent 70%);
        }
        .invite-card .invite-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--bg-dark);
            margin-bottom: 20px;
        }
        .invite-card h3 {
            font-size: 22px;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .invite-card .invite-desc {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .invite-progress {
            margin-bottom: 16px;
        }
        .invite-progress .progress-label {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 8px;
        }
        .progress-bar-track {
            background: rgba(255, 255, 255, .08);
            border-radius: 20px;
            height: 8px;
            overflow: hidden;
        }
        .progress-bar-fill {
            background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
            border-radius: 20px;
            height: 100%;
            transition: width 1s ease;
        }
        .invite-reward {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: rgba(45, 90, 61, .3);
            border-radius: 10px;
            border: 1px solid rgba(45, 90, 61, .4);
            font-size: 13px;
            color: var(--text-main);
            margin-bottom: 24px;
        }
        .invite-reward i {
            color: var(--primary);
            font-size: 16px;
        }

        /* ===== 价值主张 ===== */
        .value-section {
            background: var(--bg-dark);
        }
        .value-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .value-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .value-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .value-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-dark);
        }
        .value-card:hover::after {
            opacity: 1;
        }
        .value-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(193, 154, 107, .12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .value-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .value-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
        }

        /* ===== 功能分组 ===== */
        .feature-section {
            background: var(--bg-surface);
            position: relative;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 30px;
            transition: var(--transition);
            position: relative;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(193, 154, 107, .4);
        }
        .feature-num {
            font-size: 13px;
            color: var(--primary);
            letter-spacing: 2px;
            font-weight: 600;
            margin-bottom: 14px;
            display: block;
        }
        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .feature-card ul {
            margin-top: 16px;
            padding: 0;
        }
        .feature-card ul li {
            font-size: 13px;
            color: var(--text-sub);
            padding-left: 22px;
            position: relative;
            margin-bottom: 6px;
        }
        .feature-card ul li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary);
            font-size: 12px;
            top: 1px;
        }

        /* ===== 适用场景 ===== */
        .scenario-section {
            background: var(--bg-dark);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .scenario-card {
            background: var(--bg-surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 40px 36px;
            transition: var(--transition);
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }
        .scenario-card:hover {
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .scenario-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(193, 154, 107, .1);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .scenario-card h3 {
            font-size: 20px;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== 成功案例 ===== */
        .case-section {
            background: var(--bg-surface);
        }
        .case-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .case-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(193, 154, 107, .3);
        }
        .case-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .case-card:hover .case-img img {
            transform: scale(1.05);
        }
        .case-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(transparent 40%, rgba(10, 15, 12, .8));
        }
        .case-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(193, 154, 107, .9);
            color: var(--bg-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
        }
        .case-content {
            padding: 22px 20px 24px;
        }
        .case-tags {
            display: flex;
            gap: 8px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .case-tags span {
            font-size: 12px;
            color: var(--text-sub);
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--border);
            padding: 2px 10px;
            border-radius: 12px;
        }
        .case-content h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .case-content p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .case-meta {
            font-size: 13px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .case-meta i {
            font-size: 12px;
        }

        /* ===== 价格 ===== */
        .pricing-section {
            background: var(--bg-dark);
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .pricing-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 40px 32px;
            transition: var(--transition);
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .pricing-card.featured {
            border-color: var(--primary);
            background: linear-gradient(180deg, rgba(193, 154, 107, .08), rgba(17, 25, 22, .9));
            box-shadow: 0 0 40px rgba(193, 154, 107, .08);
        }
        .pricing-card.featured .pricing-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: var(--bg-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .pricing-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .pricing-price {
            font-size: 44px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.2;
        }
        .pricing-price small {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-sub);
        }
        .pricing-desc {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 24px;
        }
        .pricing-features {
            margin-bottom: 28px;
        }
        .pricing-features li {
            font-size: 14px;
            color: var(--text-sub);
            padding: 6px 0;
            padding-left: 24px;
            position: relative;
        }
        .pricing-features li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary);
            font-size: 12px;
        }
        .pricing-features li.disabled {
            color: var(--text-dim);
        }
        .pricing-features li.disabled::before {
            content: '\f00d';
            color: var(--text-dim);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-surface);
        }
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(193, 154, 107, .3);
        }
        .faq-item.open {
            border-color: var(--primary-dark);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            text-align: left;
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform .3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 28px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 28px 24px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 15, 12, .8);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 38px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .cta-content p {
            font-size: 17px;
            color: var(--text-sub);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #070b09;
            padding: 70px 0 0;
            border-top: 1px solid var(--border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 50px;
        }
        .footer-brand .site-logo {
            margin-bottom: 20px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 20px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-sub);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 24px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .value-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero h1 {
                font-size: 40px;
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .pricing-card.featured {
                grid-column: span 1;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-head h2 {
                font-size: 30px;
            }
            .hero {
                padding: 140px 0 70px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-content {
                padding-right: 0;
            }
            .hero h1 {
                font-size: 34px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .site-header {
                top: 8px;
                padding: 0 12px;
            }
            .header-bar {
                padding: 8px 12px 8px 16px;
                border-radius: 40px;
            }
            .logo-main {
                font-size: 14px;
            }
            .logo-sub {
                font-size: 10px;
            }
            .nav-link {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .site-nav.open {
                position: absolute;
                top: 70px;
                left: 12px;
                right: 12px;
                background: rgba(10, 15, 12, .95);
                backdrop-filter: blur(20px);
                border-radius: 16px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                box-shadow: var(--shadow);
                border: 1px solid var(--border-light);
            }
            .site-nav.open .nav-link {
                display: block;
                padding: 12px 16px;
                text-align: center;
                font-size: 15px;
            }
            .site-nav.open .nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .invite-card {
                padding: 28px 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .value-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-content h2 {
                font-size: 28px;
            }
            .btn-lg {
                padding: 14px 32px;
                font-size: 15px;
            }
            .header-bar .site-logo .logo-sub {
                display: none;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }