/* roulang page: index */
:root {
            --app-primary: #00D084;
            --app-primary-hover: #059669;
            --app-primary-light: rgba(0, 208, 132, 0.12);
            --app-accent: #FF5E1E;
            --app-accent-hover: #e04b0f;
            --app-dark-bg: #0B1120;
            --app-dark-card: #151F32;
            --app-light-bg: #F8FAFC;
            --app-border: #E2E8F0;
            --app-title: #0F172A;
            --app-text: #334155;
            --app-muted: #64748B;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-soft: 0 10px 30px -8px rgba(15, 23, 42, 0.08);
            --shadow-hover: 0 20px 35px -8px rgba(0, 208, 132, 0.22);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--app-text);
            background-color: #FFFFFF;
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-smooth);
        }
        a:hover {
            color: var(--app-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 滚动收缩双层导航体系 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            transition: var(--transition-smooth);
            background: #FFFFFF;
        }
        .header-topbar {
            height: 38px;
            background-color: var(--app-dark-bg);
            color: #94A3B8;
            font-size: 0.8125rem;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition-smooth);
        }
        .header-main-nav {
            height: 78px;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition-smooth);
        }
        /* 滚动吸顶状态 */
        .site-header.scrolled .header-topbar {
            height: 0;
            opacity: 0;
            overflow: hidden;
            border-bottom: none;
        }
        .site-header.scrolled .header-main-nav {
            height: 60px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .brand-logo-text {
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--app-title);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand-logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--app-primary) 0%, #009e63 100%);
            color: #FFFFFF;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transform: skew(-8deg);
        }
        .brand-logo-icon i {
            transform: skew(8deg);
        }

        .nav-link-custom {
            font-weight: 600;
            font-size: 0.95rem;
            color: #334155;
            padding: 8px 14px !important;
            position: relative;
        }
        .nav-link-custom:hover, .nav-link-custom.active {
            color: var(--app-primary);
        }
        .nav-link-custom::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--app-primary);
            transform: scaleX(0);
            transition: var(--transition-smooth);
        }
        .nav-link-custom:hover::after {
            transform: scaleX(1);
        }

        /* 按钮重构 */
        .btn-speed-accent {
            background-color: var(--app-accent);
            color: #FFFFFF;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 8px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 14px rgba(255, 94, 30, 0.3);
        }
        .btn-speed-accent:hover {
            background-color: var(--app-accent-hover);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 94, 30, 0.4);
        }
        .btn-speed-outline {
            background: transparent;
            color: #FFFFFF;
            border: 2px solid rgba(255, 255, 255, 0.7);
            font-weight: 600;
            padding: 9px 22px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
        }
        .btn-speed-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-primary-green {
            background-color: var(--app-primary);
            color: #0F172A;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: 8px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
        }
        .btn-primary-green:hover {
            background-color: #00bf78;
            color: #0F172A;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0, 208, 132, 0.35);
        }

        /* 页面分段通用设置 */
        .section-padding {
            padding: 85px 0;
            position: relative;
        }
        .section-bg-light {
            background-color: var(--app-light-bg);
        }
        .section-bg-white {
            background-color: #FFFFFF;
        }
        .section-bg-dark {
            background-color: var(--app-dark-bg);
            color: #F8FAFC;
        }

        .section-badge {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            padding: 5px 14px;
            border-radius: 9999px;
            background-color: var(--app-primary-light);
            color: var(--app-primary);
            margin-bottom: 14px;
        }
        .section-badge-dark {
            background-color: rgba(0, 208, 132, 0.15);
            color: var(--app-primary);
            border: 1px solid rgba(0, 208, 132, 0.3);
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--app-title);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .section-title-light {
            color: #FFFFFF;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--app-muted);
            max-width: 820px;
            margin: 0 auto 40px auto;
            line-height: 1.7;
        }
        .section-desc-light {
            color: #94A3B8;
        }

        /* Hero 沉浸区 */
        .hero-banner-section {
            padding-top: 175px;
            padding-bottom: 90px;
            background: linear-gradient(rgba(11, 17, 32, 0.88), rgba(11, 17, 32, 0.94)), url('/assets/images/9b46de1fd39d99b4.jpg') center/cover no-repeat;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .countdown-bar-container {
            background: rgba(30, 41, 59, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 14px 24px;
            display: inline-flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 25px;
        }
        .countdown-unit {
            display: flex;
            align-items: baseline;
            gap: 4px;
        }
        .countdown-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--app-accent);
            font-variant-numeric: tabular-nums;
        }
        .countdown-label {
            font-size: 0.78rem;
            color: #CBD5E1;
        }
        .hero-h1-heading {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -1px;
            margin-bottom: 22px;
        }
        .hero-intro-text {
            font-size: 1.15rem;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 35px;
            max-width: 860px;
        }
        .hero-stat-badge {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero-stat-icon {
            font-size: 1.6rem;
            color: var(--app-primary);
        }

        /* 通用卡片视觉规范 */
        .custom-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--app-border);
            box-shadow: var(--shadow-soft);
            transition: var(--transition-smooth);
            overflow: hidden;
            height: 100%;
        }
        .custom-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 208, 132, 0.4);
        }
        .dark-custom-card {
            background: var(--app-dark-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            box-shadow: 0 10px 25px rgba(0,0,0,0.3);
            transition: var(--transition-smooth);
            height: 100%;
        }
        .dark-custom-card:hover {
            transform: translateY(-5px);
            border-color: var(--app-primary);
            box-shadow: 0 12px 30px rgba(0, 208, 132, 0.18);
        }

        /* 流程步骤 */
        .step-node-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--app-primary);
            color: #0F172A;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            margin-bottom: 16px;
        }

        /* 数据看板条 */
        .stat-counter-val {
            font-size: 2.75rem;
            font-weight: 900;
            color: var(--app-primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        /* 折叠面板 (手风琴) 定制 */
        .accordion-item-sports {
            background: #FFFFFF;
            border: 1px solid var(--app-border) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-soft);
        }
        .accordion-button-sports {
            padding: 18px 24px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--app-title) !important;
            background: #FFFFFF !important;
            box-shadow: none !important;
            display: flex;
            align-items: center;
        }
        .accordion-button-sports::after {
            filter: grayscale(1);
            transition: var(--transition-smooth);
        }
        .accordion-button-sports:not(.collapsed)::after {
            filter: invert(56%) sepia(88%) saturate(1450%) hue-rotate(118deg);
        }

        /* 页脚规范 */
        .site-footer {
            background: #060B14;
            color: #94A3B8;
            font-size: 0.9rem;
            padding-top: 70px;
            padding-bottom: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer a {
            color: #CBD5E1;
        }
        .site-footer a:hover {
            color: var(--app-primary);
        }
        .footer-bottom-line {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 25px;
            margin-top: 45px;
            font-size: 0.8125rem;
        }

        /* 移动端与响应式适配 */
        @media (max-width: 991px) {
            .hero-h1-heading {
                font-size: 2.2rem;
            }
            .countdown-bar-container {
                flex-wrap: wrap;
                gap: 12px;
            }
            .section-padding {
                padding: 60px 0;
            }
            .header-topbar {
                display: none;
            }
            .site-header .header-main-nav {
                height: 65px;
            }
            .hero-banner-section {
                padding-top: 110px;
            }
        }
        @media (max-width: 575px) {
            .hero-h1-heading {
                font-size: 1.75rem;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .stat-counter-val {
                font-size: 2.1rem;
            }
        }