/* roulang page: index */
:root {
            --brand-primary: #0a7c59;
            --brand-primary-light: #15b986;
            --brand-dark: #071f18;
            --brand-surface: #0d2820;
            --brand-surface-card: #13382d;
            --brand-surface-border: #1e4e3f;
            --accent-gold: #f5b041;
            --accent-cyan: #22d3ee;
            --text-main: #f0fdf4;
            --text-muted: #94a3b8;
            --text-light: #cbd5e1;
            --bg-light: #f8fafc;
            --bg-card-light: #ffffff;
            --border-light: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 40px rgba(21, 185, 134, 0.2);
            --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        /* Reset & Base */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #04100c;
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--brand-primary-light); }
        ul { list-style: none; }

        /* Full-Screen Drawer Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(4, 16, 12, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(30, 78, 63, 0.4);
            padding: 14px 0;
            transition: var(--transition);
        }
        .nav-container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: #ffffff;
        }
        .brand-logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--brand-primary-light), var(--brand-primary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 0 15px rgba(21, 185, 134, 0.4);
        }
        .nav-right-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--brand-primary-light), var(--brand-primary));
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(21, 185, 134, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .nav-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(21, 185, 134, 0.5);
        }
        .drawer-toggle {
            background: var(--brand-surface-card);
            border: 1px solid var(--brand-surface-border);
            color: var(--text-main);
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: var(--transition);
        }
        .drawer-toggle:hover {
            background: var(--brand-surface-border);
            border-color: var(--brand-primary-light);
        }
        .drawer-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--text-main);
            transition: var(--transition);
        }

        /* Fullscreen Slide Drawer Overlay */
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(4, 16, 12, 0.96);
            backdrop-filter: blur(24px);
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .drawer-close {
            position: absolute;
            top: 28px;
            right: 32px;
            background: var(--brand-surface-card);
            border: 1px solid var(--brand-surface-border);
            color: #fff;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            font-size: 1.3rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .drawer-close:hover {
            transform: rotate(90deg);
            background: var(--brand-primary);
        }
        .drawer-menu {
            text-align: center;
        }
        .drawer-menu li {
            margin: 24px 0;
        }
        .drawer-menu a {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-main);
            position: relative;
            padding-bottom: 6px;
        }
        .drawer-menu a.active, .drawer-menu a:hover {
            color: var(--brand-primary-light);
        }
        .drawer-info {
            margin-top: 40px;
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 420px;
        }

        /* Main Container & Sections */
        .content-section {
            padding: 80px 0;
            position: relative;
        }
        .content-section-alt {
            background: #061712;
            border-top: 1px solid rgba(30, 78, 63, 0.3);
            border-bottom: 1px solid rgba(30, 78, 63, 0.3);
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            background: rgba(21, 185, 134, 0.12);
            border: 1px solid rgba(21, 185, 134, 0.3);
            color: var(--brand-primary-light);
            font-size: 0.82rem;
            font-weight: 600;
            border-radius: 999px;
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            line-height: 1.3;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 780px;
            line-height: 1.8;
        }

        /* Hero: 自然有机柔光首屏 */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 90px;
            position: relative;
            background: radial-gradient(circle at 50% 20%, rgba(21, 185, 134, 0.18) 0%, rgba(7, 31, 24, 0.8) 50%, #04100c 100%);
            overflow: hidden;
        }
        .hero-badge-wrap {
            display: flex;
            justify-content: center;
            margin-bottom: 24px;
        }
        .hero-badge {
            background: rgba(19, 56, 45, 0.8);
            border: 1px solid rgba(30, 78, 63, 0.8);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 0.88rem;
            color: var(--brand-primary-light);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .hero-title {
            font-size: 2.75rem;
            font-weight: 900;
            line-height: 1.25;
            color: #ffffff;
            text-align: center;
            max-width: 960px;
            margin: 0 auto 24px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            background: linear-gradient(135deg, #ffffff 30%, var(--brand-primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-description {
            font-size: 1.15rem;
            color: var(--text-light);
            text-align: center;
            max-width: 820px;
            margin: 0 auto 36px;
            line-height: 1.85;
        }
        .hero-cta-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--brand-primary-light), var(--brand-primary));
            color: #fff !important;
            padding: 14px 34px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 8px 24px rgba(21, 185, 134, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(21, 185, 134, 0.5);
        }
        .btn-secondary {
            background: var(--brand-surface-card);
            border: 1px solid var(--brand-surface-border);
            color: var(--text-main) !important;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-secondary:hover {
            background: var(--brand-surface-border);
            border-color: var(--brand-primary-light);
        }
        .hero-metrics-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            max-width: 980px;
            margin: 0 auto;
            background: rgba(13, 40, 32, 0.75);
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(30, 78, 63, 0.6);
            backdrop-filter: blur(12px);
        }
        .hero-metric-item {
            text-align: center;
            padding: 10px;
        }
        .hero-metric-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.1;
            margin-bottom: 6px;
            font-family: monospace;
        }
        .hero-metric-label {
            font-size: 0.84rem;
            color: var(--text-muted);
        }

        /* Generic Cards & Grids */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--brand-surface);
            border: 1px solid var(--brand-surface-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-primary-light);
            box-shadow: var(--shadow-glow);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(21, 185, 134, 0.15);
            color: var(--brand-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 22px;
        }
        .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .card-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Group Buying / 拼团转化专区 */
        .group-card {
            background: linear-gradient(145deg, #0f3328, #071f18);
            border: 1px solid rgba(245, 176, 65, 0.4);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
        }
        .group-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .group-status {
            background: rgba(245, 176, 65, 0.15);
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 700;
        }
        .progress-bar-wrap {
            width: 100%;
            height: 10px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            overflow: hidden;
            margin: 16px 0 8px;
        }
        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--brand-primary-light), var(--accent-gold));
            width: 82%;
            border-radius: 999px;
        }
        .progress-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .team-pool-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-bottom: 28px;
        }
        .pool-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .pool-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--brand-surface-card);
            border: 1px solid var(--brand-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand-primary-light);
            font-size: 0.85rem;
        }

        /* Comparison Table */
        .table-responsive-box {
            overflow-x: auto;
            background: var(--brand-surface);
            border: 1px solid var(--brand-surface-border);
            border-radius: var(--radius-md);
            padding: 8px;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 680px;
        }
        .compare-table th, .compare-table td {
            padding: 18px 22px;
            border-bottom: 1px solid rgba(30, 78, 63, 0.4);
            font-size: 0.95rem;
        }
        .compare-table th {
            background: var(--brand-surface-card);
            color: #fff;
            font-weight: 700;
        }
        .compare-table tr:last-child td { border-bottom: none; }
        .highlight-col {
            background: rgba(21, 185, 134, 0.08);
            color: var(--brand-primary-light);
            font-weight: 600;
        }

        /* List Rows */
        .info-list-row {
            background: var(--brand-surface);
            border: 1px solid var(--brand-surface-border);
            border-radius: var(--radius-md);
            padding: 22px 28px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
        }
        .info-list-row:hover {
            border-color: var(--brand-primary-light);
            background: var(--brand-surface-card);
            transform: translateX(4px);
        }
        .list-meta {
            font-size: 0.84rem;
            color: var(--accent-cyan);
            margin-bottom: 4px;
        }

        /* FAQ Accordion Item */
        .faq-card {
            background: var(--brand-surface);
            border: 1px solid var(--brand-surface-border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
        }
        .faq-q {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }
        .faq-q i { color: var(--accent-gold); }
        .faq-a {
            font-size: 0.94rem;
            color: var(--text-muted);
            line-height: 1.75;
            padding-left: 28px;
        }

        /* Footer */
        .site-footer {
            background: #020806;
            border-top: 1px solid rgba(30, 78, 63, 0.4);
            padding: 64px 0 32px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-col-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: var(--text-muted); }
        .footer-links a:hover { color: var(--brand-primary-light); }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 28px;
            text-align: center;
            font-size: 0.82rem;
        }

        /* Sticky Bottom Float Bar */
        .sticky-action-bar {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 990;
            background: rgba(13, 40, 32, 0.94);
            border: 1px solid rgba(21, 185, 134, 0.5);
            backdrop-filter: blur(16px);
            padding: 10px 24px;
            border-radius: 999px;
            display: flex;
            align-items: center;
            gap: 20px;
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6);
            max-width: 90%;
        }
        .sticky-text {
            font-size: 0.88rem;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--brand-primary-light);
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 10px var(--brand-primary-light);
            animation: pulseAnim 1.8s infinite;
        }
        @keyframes pulseAnim {
            0% { transform: scale(0.9); opacity: 0.7; }
            50% { transform: scale(1.3); opacity: 1; }
            100% { transform: scale(0.9); opacity: 0.7; }
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero-title { font-size: 2.3rem; }
        }
        @media (max-width: 768px) {
            .grid-3, .grid-2 { grid-template-columns: 1fr; }
            .hero-metrics-strip { grid-template-columns: repeat(2, 1fr); }
            .team-pool-grid { grid-template-columns: 1fr; }
            .hero-title { font-size: 1.85rem; }
            .section-title { font-size: 1.6rem; }
            .hero-section { padding-top: 120px; }
            .sticky-action-bar { flex-direction: column; gap: 8px; border-radius: var(--radius-md); width: 92%; }
        }
        @media (max-width: 520px) {
            .hero-metrics-strip { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
        }