/* roulang page: index */
:root {
            --primary: #0B3D2E;
            --secondary: #00E5A0;
            --accent: #FF6B35;
            --bg: #F7F5F2;
            --white: #FFFFFF;
            --dark-bg: #0B3D2E;
            --dark-bg-gradient: linear-gradient(135deg, #0B3D2E 0%, #0F2A22 100%);
            --text: #2C3E38;
            --text-light: #6B7D76;
            --text-weak: rgba(255, 255, 255, 0.6);
            --border: rgba(11, 61, 46, 0.08);
            --border-focus: rgba(0, 229, 160, 0.3);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-btn: 40px;
            --shadow-card: 0 2px 16px rgba(11, 61, 46, 0.06);
            --shadow-card-hover: 0 8px 32px rgba(11, 61, 46, 0.12);
            --shadow-nav: 0 1px 8px rgba(11, 61, 46, 0.04);
            --font-sans: "Inter", "Segoe UI", "Helvetica Neue", sans-serif;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-cn);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-cn);
            color: var(--primary);
            margin-top: 0;
            line-height: 1.3;
        }
        h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 28px;
            font-weight: 700;
        }
        h3 {
            font-size: 20px;
            font-weight: 600;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        input,
        select {
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 12px 16px;
            width: 100%;
            background: var(--white);
            color: var(--text);
            outline: none;
            transition: var(--transition);
        }
        input:focus,
        select:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px var(--border-focus);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 64px;
            background: var(--white);
            box-shadow: var(--shadow-nav);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 18px;
            position: relative;
        }
        .nav-logo .logo-icon::after {
            content: '';
            position: absolute;
            width: 12px;
            height: 12px;
            border: 2px solid var(--secondary);
            border-radius: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) rotate(45deg);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            padding: 4px 0;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-weight: 600;
            font-family: var(--font-cn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
        }
        .btn-primary {
            background: var(--secondary);
            color: var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 14px;
        }
        .btn-primary:hover {
            background: #00C78A;
            box-shadow: 0 4px 16px rgba(0, 229, 160, 0.3);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 14px;
        }
        .btn-outline:hover {
            background: rgba(11, 61, 46, 0.06);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--white);
            border-radius: var(--radius-btn);
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 700;
            min-height: 48px;
        }
        .btn-accent:hover {
            background: #E55A2B;
            box-shadow: 0 6px 24px rgba(255, 107, 53, 0.35);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 18px;
            min-height: 52px;
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 12px;
        }

        .nav-search {
            color: var(--text-light);
            cursor: pointer;
            font-size: 16px;
            padding: 8px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
        }

        /* Hero */
        .hero {
            padding-top: 64px;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--dark-bg-gradient);
            position: relative;
            overflow: hidden;
        }
        .hero .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            width: 100%;
        }
        .hero-text {
            flex: 1;
            color: var(--white);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--secondary);
            color: var(--primary);
            font-weight: 700;
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 14px;
            margin-bottom: 20px;
        }
        .hero-badge .badge-num {
            font-size: 24px;
            font-weight: 800;
            font-family: var(--font-sans);
        }
        .hero h1 {
            color: var(--white);
            font-size: 40px;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .hero-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-btns .btn-outline {
            color: var(--white);
            border-color: rgba(255, 255, 255, 0.4);
        }
        .hero-btns .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(255, 255, 255, 0.06);
        }
        .hero-visual {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 16px;
        }
        .hero-img-wrap {
            width: 100%;
            max-width: 440px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
        }
        .hero-img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .hero-mini-cards {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .mini-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 229, 160, 0.2);
            border-radius: var(--radius-sm);
            padding: 10px 16px;
            color: var(--white);
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .mini-card i {
            color: var(--secondary);
        }

        /* 区块通用 */
        .section {
            padding: 100px 0;
        }
        .section-dark {
            background: var(--dark-bg-gradient);
            color: var(--white);
        }
        .section-dark h2 {
            color: var(--white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            margin-bottom: 8px;
        }
        .section-header p {
            color: var(--text-light);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-dark .section-header p {
            color: var(--text-weak);
        }

        /* 数据看板 */
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(0, 229, 160, 0.2);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 42px;
            font-weight: 800;
            font-family: var(--font-sans);
            color: var(--secondary);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-weak);
        }
        .stat-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--secondary);
            font-size: 12px;
            font-weight: 600;
            margin-top: 6px;
        }

        /* 服务矩阵 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(0, 229, 160, 0.25);
        }
        .service-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 20px;
        }
        .service-icon img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .service-card h3 {
            margin-bottom: 8px;
            color: var(--primary);
        }
        .service-card p {
            font-size: 14px;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 12px;
        }
        .service-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            cursor: pointer;
            transition: var(--transition);
        }
        .service-link:hover {
            color: #00C78A;
            gap: 8px;
        }

        /* 结果对比 */
        .compare-wrap {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 0;
            align-items: stretch;
        }
        .compare-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }
        .compare-card.old {
            background: #F0F0ED;
            border: 1px solid #ddd;
        }
        .compare-card.new {
            border: 2px solid var(--secondary);
            background: var(--white);
            position: relative;
        }
        .compare-card.new::before {
            content: '推荐';
            position: absolute;
            top: -14px;
            right: 20px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 12px;
        }
        .compare-card h3 {
            margin-bottom: 20px;
            font-size: 22px;
        }
        .compare-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            font-size: 15px;
        }
        .compare-item .val {
            font-weight: 700;
            font-family: var(--font-sans);
        }
        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 16px;
        }
        .vs-badge {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
        }

        /* FAQ */
        .faq-group {
            margin-bottom: 32px;
        }
        .faq-group-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            padding-left: 8px;
            border-left: 4px solid var(--secondary);
        }
        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .accordion-header {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 18px 24px;
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-family: var(--font-cn);
        }
        .accordion-header .icon {
            font-size: 20px;
            transition: transform var(--transition);
            color: var(--secondary);
        }
        .accordion-item.active .accordion-header .icon {
            transform: rotate(45deg);
        }
        .accordion-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.75;
            padding: 0 24px;
        }
        .accordion-item.active .accordion-body {
            max-height: 300px;
            padding: 0 24px 20px 24px;
        }

        /* CTA */
        .cta-section .form-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .cta-section .form-row input,
        .cta-section .form-row select {
            flex: 1;
            min-width: 180px;
        }
        .trust-badges {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 24px;
        }
        .trust-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }
        .trust-badge i {
            color: var(--secondary);
            font-size: 16px;
        }

        /* Footer */
        .footer {
            background: #1A1A1A;
            color: #B0B0B0;
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
        }
        .footer h4 {
            color: var(--white);
            font-weight: 600;
            margin-bottom: 16px;
            font-size: 16px;
        }
        .footer a {
            color: #B0B0B0;
            font-size: 14px;
        }
        .footer a:hover {
            color: var(--secondary);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 36px;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #888;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-wrap {
                grid-template-columns: 1fr;
            }
            .compare-vs {
                padding: 24px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-content {
                flex-direction: column;
                text-align: center;
            }
            .hero-visual {
                align-items: center;
            }
            .hero-subtitle {
                max-width: 100%;
            }
            .hero-btns {
                justify-content: center;
            }
            .nav-links {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .nav-actions .btn-outline,
            .nav-actions .nav-search {
                display: none;
            }
        }

        @media (max-width: 640px) {
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 22px;
            }
            .section {
                padding: 48px 0;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .dashboard-grid {
                grid-template-columns: 1fr;
            }
            .cta-section .form-row {
                flex-direction: column;
            }
            .stat-number {
                font-size: 36px;
            }
            .compare-card {
                padding: 24px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 28px;
            }
            .container {
                padding: 0 16px;
            }
            .service-card {
                padding: 24px 20px;
            }
            .accordion-header {
                font-size: 16px;
                padding: 14px 16px;
            }
        }

        /* 移动端导航 */
        .mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            width: 100%;
            background: var(--white);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            display: none;
            flex-direction: column;
            padding: 16px 0;
            z-index: 999;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 24px;
            font-size: 16px;
            border-bottom: 1px solid var(--border);
            color: var(--primary);
            font-weight: 500;
        }