/* roulang page: index */
:root {
            --brand-primary: #0F52BA;
            --brand-navy: #0B192C;
            --brand-accent: #00B4D8;
            --brand-turf: #10B981;
            --bg-light: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #475569;
            --text-sub: #64748B;
            --border-color: #E2E8F0;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 6px 18px -2px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 16px 32px -4px rgba(15, 23, 42, 0.1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, select { font-family: inherit; }
        
        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-section {
            padding-top: 84px;
            padding-bottom: 84px;
            position: relative;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 52px auto;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(15, 82, 186, 0.08);
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            min-height: 46px;
        }
        .btn-primary {
            background-color: var(--brand-primary);
            color: #FFFFFF;
            box-shadow: 0 4px 12px rgba(15, 82, 186, 0.28);
        }
        .btn-primary:hover {
            background-color: #0c4398;
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(15, 82, 186, 0.35);
        }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--brand-primary);
            border-color: var(--border-color);
        }
        .btn-secondary:hover {
            border-color: var(--brand-primary);
            background-color: rgba(15, 82, 186, 0.04);
        }
        .btn-accent {
            background-color: var(--brand-turf);
            color: #FFFFFF;
        }
        .btn-accent:hover {
            background-color: #0d9668;
            transform: translateY(-2px);
        }

        /* Top Bar */
        .top-bar {
            background-color: #F1F5F9;
            border-bottom: 1px solid var(--border-color);
            font-size: 12px;
            color: var(--text-sub);
            padding: 8px 0;
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--brand-turf);
            border-radius: 50%;
            display: inline-block;
            margin-right: 6px;
            box-shadow: 0 0 6px rgba(16, 185, 129, 0.8);
        }

        /* Main Header Nav */
        .main-header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .brand-icon-box {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 900;
            font-size: 18px;
        }
        .brand-badge {
            font-size: 11px;
            padding: 2px 8px;
            background-color: rgba(15, 82, 186, 0.1);
            color: var(--brand-primary);
            border-radius: 4px;
            font-weight: normal;
            margin-left: 6px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-item {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            padding: 8px 4px;
        }
        .nav-item:hover, .nav-item.active {
            color: var(--brand-primary);
        }

        /* Hero */
        .hero-banner {
            position: relative;
            background: linear-gradient(135deg, #09152b 0%, #112d59 100%);
            color: #FFFFFF;
            padding: 72px 0 96px 0;
            overflow: hidden;
        }
        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/804e541a97527498.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-grid {
            position: relative;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-content p {
            font-size: 16px;
            color: #CBD5E1;
            margin-bottom: 32px;
            max-width: 620px;
            line-height: 1.75;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }
        .hero-broadcast-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }
        .broadcast-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(239, 68, 68, 0.2);
            border: 1px solid rgba(239, 68, 68, 0.4);
            color: #FCA5A5;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .broadcast-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #FFFFFF;
        }
        .countdown-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
            margin: 18px 0;
            text-align: center;
        }
        .count-box {
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 10px 4px;
        }
        .count-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--brand-accent);
            display: block;
            line-height: 1.1;
        }
        .count-label {
            font-size: 11px;
            color: #94A3B8;
        }

        /* Generic Card Grids */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .card-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease-in-out;
            position: relative;
        }
        .card-panel:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: #CBD5E1;
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(15, 82, 186, 0.08);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .card-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* Section Specific Styles */
        .calendar-item {
            display: flex;
            gap: 20px;
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
            align-items: center;
        }
        .calendar-item:last-child { border-bottom: none; }
        .calendar-date {
            background: rgba(15, 82, 186, 0.08);
            border-radius: 8px;
            padding: 12px 18px;
            text-align: center;
            min-width: 86px;
        }
        .cal-month { font-size: 12px; font-weight: 600; color: var(--brand-primary); }
        .cal-day { font-size: 22px; font-weight: 800; color: var(--text-main); line-height: 1; margin-top: 4px; }
        
        /* Pricing & Tier Cards */
        .tier-card {
            border: 2px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            background: #FFFFFF;
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .tier-card.featured {
            border-color: var(--brand-primary);
            box-shadow: var(--shadow-lg);
        }
        .tier-badge {
            position: absolute;
            top: -14px;
            right: 28px;
            background: var(--brand-primary);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-full);
        }
        .tier-title { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
        .tier-price { font-size: 28px; font-weight: 800; color: var(--brand-primary); margin: 16px 0 20px 0; }
        .tier-features { margin-bottom: 30px; flex-grow: 1; }
        .tier-features li {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .tier-check { color: var(--brand-turf); font-weight: bold; }

        /* Metric Highlights */
        .metric-banner {
            background: linear-gradient(135deg, var(--brand-navy) 0%, #152A4A 100%);
            color: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--brand-accent);
            line-height: 1;
            margin-bottom: 8px;
            font-variant-numeric: tabular-nums;
        }
        .metric-sub {
            font-size: 14px;
            color: #94A3B8;
        }

        /* FAQ Accordion */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            background: #FFFFFF;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }
        .faq-item:last-child { border-bottom: none; }
        .faq-question {
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-arrow {
            transition: transform 0.25s ease;
            font-size: 18px;
            color: var(--brand-primary);
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 28px 22px 28px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* Workflow Step Cards */
        .flow-container {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            position: relative;
        }
        .flow-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            position: relative;
        }
        .flow-step-num {
            font-size: 12px;
            font-weight: 800;
            color: var(--brand-primary);
            background: rgba(15, 82, 186, 0.08);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
        }

        /* Form CTA Box */
        .form-cta-container {
            background: linear-gradient(to right, #FFFFFF, #F8FAFC);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .form-input-group {
            margin-bottom: 18px;
        }
        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s ease;
        }
        .form-input:focus {
            border-color: var(--brand-primary);
        }

        /* Footer */
        .main-footer {
            background-color: var(--brand-navy);
            color: #94A3B8;
            padding: 72px 0 36px 0;
            font-size: 13px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col-title {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748B;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .metric-banner { grid-template-columns: repeat(2, 1fr); gap: 32px; }
            .flow-container { grid-template-columns: repeat(3, 1fr); }
            .hero-grid { grid-template-columns: 1fr; }
            .form-cta-container { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .site-section { padding-top: 56px; padding-bottom: 56px; }
            .section-title { font-size: 26px; }
            .hero-content h1 { font-size: 30px; }
            .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
            .flow-container { grid-template-columns: 1fr; }
            .metric-banner { grid-template-columns: 1fr; }
            .nav-menu { display: none; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .top-bar-inner { flex-direction: column; gap: 4px; text-align: center; }
        }