/* roulang page: index */
:root {
            --bg-deep: #0A1128;
            --bg-surface: #0F1A3A;
            --bg-card: rgba(255, 255, 255, 0.05);
            --primary: #00D2FF;
            --primary-glow: rgba(0, 210, 255, 0.4);
            --secondary: #FF6B35;
            --secondary-glow: rgba(255, 107, 53, 0.4);
            --text-main: #FFFFFF;
            --text-muted: #CBD5E1;
            --text-sub: #94A3B8;
            --border-glass: rgba(255, 255, 255, 0.12);
            --radius-lg: 18px;
            --radius-md: 12px;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        body {
            background-color: var(--bg-deep);
            color: var(--text-muted);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.65;
            letter-spacing: -0.015em;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        /* 顶部状态条与导航 */
        .top-info-bar {
            background: #060b1b;
            font-size: 0.82rem;
            color: var(--text-sub);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 6px 0;
        }
        .top-info-bar a {
            color: var(--text-sub);
            text-decoration: none;
            transition: var(--transition);
        }
        .top-info-bar a:hover {
            color: var(--primary);
        }

        .navbar-custom {
            background: rgba(10, 17, 40, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .navbar-brand-txt {
            font-size: 1.35rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .navbar-brand-txt span {
            color: var(--primary);
        }
        .brand-badge {
            font-size: 0.65rem;
            background: rgba(0, 210, 255, 0.15);
            color: var(--primary);
            border: 1px solid var(--primary-glow);
            padding: 2px 7px;
            border-radius: 4px;
            text-transform: uppercase;
        }
        .nav-link {
            color: var(--text-muted) !important;
            font-weight: 500;
            padding: 8px 14px !important;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: #ffffff !important;
            background: rgba(255, 255, 255, 0.06);
        }

        /* 按钮体系 */
        .btn-neon-primary {
            background: linear-gradient(135deg, #00D2FF, #0077FE);
            color: #050b1a;
            font-weight: 700;
            border: none;
            border-radius: 50px;
            padding: 10px 24px;
            box-shadow: 0 0 18px var(--primary-glow);
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn-neon-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 210, 255, 0.7);
            color: #ffffff;
        }
        .btn-neon-secondary {
            background: linear-gradient(135deg, #FF6B35, #E8590C);
            color: #ffffff;
            font-weight: 700;
            border: none;
            border-radius: 50px;
            padding: 10px 24px;
            box-shadow: 0 0 18px var(--secondary-glow);
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn-neon-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(255, 107, 53, 0.7);
            color: #ffffff;
        }
        .btn-neon-outline {
            background: transparent;
            color: #ffffff;
            border: 1px solid var(--border-glass);
            border-radius: 50px;
            padding: 9px 22px;
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn-neon-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 玻璃拟态卡片 */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .glass-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-glow);
            box-shadow: 0 14px 35px rgba(0, 210, 255, 0.15);
        }

        /* 章节通用装饰 */
        section {
            padding: 85px 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-surface);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--primary);
            background: rgba(0, 210, 255, 0.1);
            border: 1px solid rgba(0, 210, 255, 0.25);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .section-title {
            color: var(--text-main);
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-sub);
            max-width: 780px;
            margin-bottom: 45px;
        }

        /* 首屏 Hero */
        .hero-section {
            min-height: 85vh;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.45) 0%, rgba(10, 17, 40, 0.98) 100%),
                        url('/assets/images/294b21b5cf9a030c.jpg') center/cover no-repeat;
            display: flex;
            align-items: center;
            padding-top: 110px;
            padding-bottom: 70px;
            position: relative;
        }
        .hero-badge-wrap {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(0, 210, 255, 0.12);
            border: 1px solid var(--primary-glow);
            padding: 6px 16px;
            border-radius: 30px;
            color: var(--primary);
            font-size: 0.88rem;
            font-weight: 600;
            margin-bottom: 22px;
        }
        .hero-title {
            font-size: 3.1rem;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.22;
            letter-spacing: -0.025em;
            margin-bottom: 20px;
        }
        .hero-title span {
            color: var(--primary);
            text-shadow: 0 0 25px rgba(0, 210, 255, 0.5);
        }
        .hero-subtext {
            font-size: 1.15rem;
            color: #cbd5e1;
            line-height: 1.75;
            max-width: 680px;
            margin-bottom: 35px;
        }
        .hero-stat-card {
            background: rgba(15, 26, 58, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            text-align: center;
        }
        .hero-stat-num {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-family: monospace, sans-serif;
        }
        .hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-sub);
            margin-top: 4px;
        }

        /* 黏性二级面包屑导航条 */
        .subnav-sticky {
            position: sticky;
            top: 71px;
            z-index: 1010;
            background: rgba(15, 26, 58, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-glass);
            padding: 10px 0;
        }
        .subnav-chips {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow-x: auto;
            white-space: nowrap;
            padding-bottom: 2px;
        }
        .subnav-chips::-webkit-scrollbar {
            display: none;
        }
        .subnav-chip-link {
            font-size: 0.82rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.05);
            padding: 5px 14px;
            border-radius: 20px;
            text-decoration: none;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .subnav-chip-link:hover, .subnav-chip-link.active {
            background: var(--primary);
            color: #050b1a;
            font-weight: 600;
            border-color: var(--primary);
        }

        /* 倒计时与拼团转化条 */
        .countdown-strip {
            background: linear-gradient(90deg, rgba(255, 107, 53, 0.15) 0%, rgba(0, 210, 255, 0.15) 100%);
            border: 1px solid rgba(255, 107, 53, 0.3);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: -35px;
            position: relative;
            z-index: 20;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }
        .timer-box {
            display: inline-flex;
            gap: 8px;
            align-items: center;
        }
        .timer-num {
            background: #0f1a3a;
            color: var(--secondary);
            font-size: 1.15rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid rgba(255, 107, 53, 0.3);
            font-family: monospace;
        }

        /* 进度条定制 */
        .custom-progress {
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            height: 10px;
            overflow: hidden;
            margin: 12px 0 6px 0;
        }
        .custom-progress-bar {
            background: linear-gradient(90deg, #00D2FF, #0077FE);
            border-radius: 20px;
            height: 100%;
        }
        .progress-orange {
            background: linear-gradient(90deg, #FF6B35, #FFAA00);
        }

        /* 对比看板定制 */
        .compare-box {
            background: rgba(255, 255, 255, 0.02);
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .compare-box.active-pro {
            background: rgba(0, 210, 255, 0.04);
            border: 1px solid var(--primary-glow);
            box-shadow: 0 0 25px rgba(0, 210, 255, 0.08);
        }

        /* 时间线定制 */
        .timeline-step {
            border-left: 2px dashed rgba(0, 210, 255, 0.4);
            padding-left: 28px;
            position: relative;
            margin-bottom: 30px;
        }
        .timeline-step::before {
            content: '';
            position: absolute;
            left: -9px;
            top: 2px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #00D2FF;
            box-shadow: 0 0 10px #00D2FF;
        }

        /* 表单输入框定制 */
        .form-control-glass, .form-select-glass {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            color: #ffffff;
            border-radius: 10px;
            padding: 12px 16px;
            transition: var(--transition);
        }
        .form-control-glass:focus, .form-select-glass:focus {
            background: rgba(255, 255, 255, 0.09);
            border-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 0 12px var(--primary-glow);
            outline: none;
        }
        .form-control-glass::placeholder {
            color: var(--text-sub);
        }

        /* 手风琴折叠样式 */
        .accordion-button {
            background-color: var(--bg-card) !important;
            color: #ffffff !important;
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md) !important;
            padding: 18px 22px;
            font-weight: 600;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(0, 210, 255, 0.08) !important;
            border-color: var(--primary-glow) !important;
            color: var(--primary) !important;
        }
        .accordion-button::after {
            filter: invert(1);
        }
        .accordion-body {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-muted);
            border: 1px solid var(--border-glass);
            border-top: none;
            border-bottom-left-radius: var(--radius-md);
            border-bottom-right-radius: var(--radius-md);
            padding: 20px 24px;
        }
        .accordion-item {
            background: transparent;
            border: none;
            margin-bottom: 14px;
        }

        /* 页脚 */
        footer {
            background: #050916;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 60px 0 30px 0;
            font-size: 0.92rem;
            color: var(--text-sub);
        }
        footer a {
            color: var(--text-sub);
            text-decoration: none;
            transition: var(--transition);
        }
        footer a:hover {
            color: var(--primary);
        }

        @media (max-width: 991px) {
            .hero-title {
                font-size: 2.3rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 767px) {
            .hero-section {
                padding-top: 90px;
            }
            .hero-title {
                font-size: 1.85rem;
            }
            .countdown-strip {
                margin-top: 20px;
            }
        }