/* roulang page: index */
:root {
            --primary-deep: #0A5C3B;
            --primary-bright: #1DA86B;
            --primary-dark-bg: #0B3D2A;
            --primary-footer-bg: #0A3B25;
            --accent-gold: #D49B3B;
            --accent-gold-light: #E8B84D;
            --bg-warm: #FAF7F2;
            --bg-light-green: #F0F7F3;
            --card-white: #FFFFFF;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #8A8A8A;
            --text-light: #FFFFFF;
            --text-light-muted: #d0e8d9;
            --border-light: #E0E0E0;
            --border-focus: #0A5C3B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 30px rgba(10, 92, 59, 0.14);
            --shadow-nav: 0 1px 8px rgba(0, 0, 0, 0.07);
            --shadow-form-card: 0 4px 28px rgba(0, 0, 0, 0.10);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.25s ease;
            --transition-slow: 0.3s ease;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap-desktop: 90px;
            --section-gap-mobile: 60px;
            --card-padding: 28px;
            --font-stack: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-warm);
            min-width: 320px;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: #FFFFFF;
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            transition: background var(--transition-fast);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary-deep);
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-link i {
            font-size: 22px;
            color: var(--accent-gold);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 15px;
            color: var(--text-body);
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary-deep);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-deep);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            display: inline-block;
            background: var(--primary-deep);
            color: #fff;
            padding: 9px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: background var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--primary-bright);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(10, 92, 59, 0.25);
            color: #fff;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--primary-deep);
            padding: 6px;
            line-height: 1;
        }

        /* 移动端导航覆盖层 */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 999;
            background: var(--primary-dark-bg);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-slow);
        }
        .mobile-nav-overlay.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav-overlay a {
            color: #fff;
            font-size: 20px;
            font-weight: 600;
            letter-spacing: 0.04em;
            transition: color var(--transition-fast);
        }
        .mobile-nav-overlay a:hover {
            color: var(--accent-gold);
        }
        .mobile-nav-overlay .close-btn {
            position: absolute;
            top: 18px;
            right: 24px;
            font-size: 30px;
            color: #fff;
            background: none;
            border: none;
        }
        .mobile-nav-overlay .mobile-cta {
            background: var(--accent-gold);
            color: #1A1A1A;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 16px;
            transition: background var(--transition-smooth);
        }
        .mobile-nav-overlay .mobile-cta:hover {
            background: var(--accent-gold-light);
        }

        /* ========== Hero ========== */
        .hero-section {
            min-height: 100vh;
            padding-top: var(--nav-height);
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, rgba(10, 92, 59, 0.88) 0%, rgba(29, 168, 107, 0.82) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-color: var(--primary-deep);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 60%, rgba(212, 155, 59, 0.10) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 28px;
            padding: 40px 0;
            max-width: 700px;
        }
        .hero-h1 {
            font-size: 44px;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: #FFFFFF;
            line-height: 1.25;
            margin: 0;
        }
        .hero-h1 .highlight {
            color: var(--accent-gold);
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-light-muted);
            line-height: 1.6;
            max-width: 520px;
        }
        .hero-badges-row {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .hero-badge {
            background: rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            text-align: center;
            min-width: 110px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: transform var(--transition-smooth), background var(--transition-smooth);
        }
        .hero-badge:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-3px);
        }
        .hero-badge .badge-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1;
            letter-spacing: -0.01em;
        }
        .hero-badge .badge-label {
            font-size: 13px;
            color: #e0ede4;
            margin-top: 6px;
            font-weight: 500;
        }
        .hero-cta {
            display: inline-block;
            background: var(--accent-gold);
            color: #1A1A1A;
            padding: 15px 38px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.03em;
            transition: background var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(212, 155, 59, 0.30);
        }
        .hero-cta:hover {
            background: var(--accent-gold-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212, 155, 59, 0.40);
            color: #1A1A1A;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--section-gap-desktop) 0;
        }
        .section-dark {
            background: var(--primary-dark-bg);
            color: #fff;
        }
        .section-light {
            background: var(--bg-warm);
        }
        .section-white {
            background: #FFFFFF;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-heading);
            text-align: center;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 48px;
            height: 3px;
            background: var(--accent-gold);
            margin: 14px auto 0;
            border-radius: 2px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 42px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .section-dark .section-subtitle {
            color: #c0d8cb;
        }

        /* ========== 指标看板 ========== */
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .dashboard-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .dashboard-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card-hover);
        }
        .dashboard-card .dash-number {
            font-size: 52px;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .dashboard-card .dash-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
            font-weight: 500;
        }
        .dashboard-card .dash-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            margin-top: 8px;
            font-weight: 600;
            color: var(--primary-bright);
        }
        .dashboard-card .dash-trend.up {
            color: var(--primary-bright);
        }

        /* ========== 服务矩阵 ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: var(--card-padding);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
            border: 2px solid transparent;
            display: flex;
            flex-direction: column;
            gap: 14px;
            cursor: default;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-deep);
        }
        .service-card .svc-icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-light-green);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .service-card .svc-icon-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .service-card .svc-icon-wrap i {
            font-size: 26px;
            color: var(--primary-deep);
        }
        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
        }
        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            flex-grow: 1;
        }
        .service-card .svc-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--primary-deep);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast), color var(--transition-fast);
        }
        .service-card .svc-link:hover {
            gap: 10px;
            color: var(--primary-bright);
        }

        /* ========== 结果对比 ========== */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .comparison-col {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .comparison-col.winner {
            background: rgba(212, 155, 59, 0.08);
            border-color: rgba(212, 155, 59, 0.30);
        }
        .comparison-col h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 18px;
            text-align: center;
            letter-spacing: 0.03em;
        }
        .comparison-col.loser h3 {
            color: #a0a0a0;
        }
        .comparison-col.winner h3 {
            color: var(--accent-gold);
        }
        .comparison-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 11px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
            font-size: 14px;
            gap: 12px;
        }
        .comparison-row:last-child {
            border-bottom: none;
        }
        .comparison-row .metric {
            color: #ccc;
            flex-shrink: 0;
        }
        .comparison-row .value {
            font-weight: 600;
            text-align: right;
        }
        .comparison-col.loser .value {
            color: #999;
        }
        .comparison-col.winner .value {
            color: var(--accent-gold);
        }
        .comparison-col.loser .value.strikethrough {
            text-decoration: line-through;
            color: #777;
        }
        .vs-divider {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .vs-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent-gold);
            color: #1A1A1A;
            font-weight: 800;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast);
        }
        .faq-item.open {
            border-color: var(--primary-deep);
        }
        .faq-question {
            width: 100%;
            background: none;
            text-align: left;
            padding: 18px 20px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary-deep);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-light-green);
            color: var(--primary-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: transform var(--transition-slow), background var(--transition-fast);
            font-weight: 700;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary-deep);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            background: var(--bg-light-green);
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer-inner {
            padding: 0 20px 18px;
        }

        /* ========== 转化表单 ========== */
        .cta-form-section {
            background: linear-gradient(180deg, #eaf6ef 0%, var(--bg-warm) 50%);
        }
        .form-card {
            background: var(--card-white);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            box-shadow: var(--shadow-form-card);
            max-width: 620px;
            margin: 0 auto;
        }
        .form-card .section-title {
            margin-bottom: 6px;
        }
        .form-card .section-title::after {
            margin-top: 10px;
        }
        .form-card .form-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 28px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-heading);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 13px 16px;
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--text-heading);
            background: #fafafa;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
            resize: vertical;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--border-focus);
            box-shadow: 0 0 0 3px rgba(10, 92, 59, 0.08);
            background: #fff;
            outline: none;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #b0b0b0;
        }
        .form-group textarea {
            min-height: 90px;
        }
        .submit-btn {
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary-bright) 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), filter var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(10, 92, 59, 0.25);
        }
        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(10, 92, 59, 0.35);
            filter: brightness(1.08);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-footer-bg);
            color: #d0ddd4;
            padding: 50px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col p,
        .footer-col a {
            font-size: 14px;
            color: #bccfc2;
            line-height: 2;
            display: block;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
            display: inline-block;
        }
        .footer-slogan {
            font-size: 14px;
            color: #a0c0aa;
            margin-bottom: 10px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #8aa894;
            letter-spacing: 0.03em;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .vs-divider {
                order: 0;
            }
            .comparison-col {
                order: 1;
            }
            .vs-divider {
                padding: 8px 0;
            }
            .vs-circle {
                width: 40px;
                height: 40px;
                font-size: 14px;
            }
            .hero-h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap-desktop: 60px;
                --card-padding: 22px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta.desktop-only {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .hero-section {
                min-height: auto;
                padding: 100px 0 60px;
            }
            .hero-inner {
                align-items: center;
                text-align: center;
                max-width: 100%;
            }
            .hero-h1 {
                font-size: 28px;
                text-align: center;
            }
            .hero-subtitle {
                text-align: center;
                font-size: 16px;
            }
            .hero-badges-row {
                justify-content: center;
                gap: 10px;
            }
            .hero-badge {
                min-width: 90px;
                padding: 12px 14px;
            }
            .hero-badge .badge-number {
                font-size: 32px;
            }
            .hero-badge .badge-label {
                font-size: 11px;
            }
            .hero-cta {
                padding: 13px 28px;
                font-size: 15px;
            }
            .section-title {
                font-size: 24px;
            }
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .dashboard-card {
                padding: 20px 14px;
            }
            .dashboard-card .dash-number {
                font-size: 38px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-col {
                padding: 22px 18px;
            }
            .form-card {
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-col a {
                display: inline-block;
                margin: 0 8px;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .dashboard-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .dashboard-card .dash-number {
                font-size: 30px;
            }
            .dashboard-card .dash-label {
                font-size: 12px;
            }
            .hero-h1 {
                font-size: 24px;
            }
            .hero-badges-row {
                gap: 8px;
            }
            .hero-badge {
                min-width: 75px;
                padding: 10px 10px;
            }
            .hero-badge .badge-number {
                font-size: 26px;
            }
            .hero-badge .badge-label {
                font-size: 10px;
            }
            .section-title {
                font-size: 22px;
            }
            .comparison-wrapper {
                gap: 10px;
            }
            .comparison-col {
                padding: 16px 12px;
            }
            .comparison-row {
                font-size: 12px;
                padding: 8px 0;
            }
            .form-card {
                padding: 20px 14px;
            }
        }