/* roulang page: index */
:root {
            --bg-primary: #0A0D14;
            --bg-secondary: #121722;
            --bg-card: #181F2E;
            --primary-gradient: linear-gradient(135deg, #7928CA 0%, #4338CA 100%);
            --accent-cyan: #00F2FE;
            --accent-orange: #FF5E3A;
            --text-main: #FFFFFF;
            --text-sub: #94A3B8;
            --text-muted: #64748B;
            --border-glass: rgba(255, 255, 255, 0.08);
            --card-radius-lg: 22px;
            --card-radius-md: 14px;
            --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
            --glow-shadow: 0 14px 35px -8px rgba(121, 40, 202, 0.25);
        }

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

        body {
            background-color: var(--bg-primary);
            color: var(--text-sub);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一容器与版块样式 */
        .container-xl {
            max-width: 1280px;
        }
        .section-block {
            padding: 85px 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }
        .section-deep {
            background: radial-gradient(circle at 50% 30%, #151b29 0%, #080a10 100%);
        }

        /* 顶部微型信息条 */
        .top-bar {
            background: #06080D;
            font-size: 0.85rem;
            border-bottom: 1px solid var(--border-glass);
            padding: 6px 0;
            color: var(--text-muted);
        }

        /* 主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            backdrop-filter: blur(14px);
            background: rgba(10, 13, 20, 0.9);
            border-bottom: 1px solid var(--border-glass);
        }
        .navbar-brand {
            color: var(--text-main);
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand span {
            background: linear-gradient(135deg, #00F2FE 0%, #7928CA 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-link {
            color: var(--text-sub) !important;
            font-weight: 500;
            padding: 0.6rem 1rem !important;
            transition: color 0.25s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-cyan) !important;
        }

        /* 资源目录轻量下拉面板 */
        .nav-item.dropdown:hover .dropdown-menu {
            display: block;
            margin-top: 0;
        }
        .dropdown-menu {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--card-radius-md);
            padding: 12px;
            box-shadow: 0 16px 40px rgba(0,0,0,0.6);
        }
        .dropdown-item {
            color: var(--text-sub);
            border-radius: 8px;
            padding: 8px 16px;
            font-size: 0.9rem;
            transition: all 0.2s;
        }
        .dropdown-item:hover {
            background: rgba(121, 40, 202, 0.2);
            color: var(--text-main);
        }

        /* 按钮与徽章系统 */
        .btn-game-primary {
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            border-radius: 9999px;
            padding: 12px 28px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 18px rgba(121, 40, 202, 0.4);
            transition: all 0.25s ease;
            text-decoration: none;
            min-height: 48px;
        }
        .btn-game-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--glow-shadow);
            color: #fff;
        }
        .btn-game-outline {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            color: var(--text-main);
            border-radius: 9999px;
            padding: 12px 28px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.25s;
            min-height: 48px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-game-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 242, 254, 0.05);
        }
        .badge-cyan {
            background: rgba(0, 242, 254, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 242, 254, 0.3);
            border-radius: 9999px;
            padding: 5px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        .badge-purple {
            background: rgba(121, 40, 202, 0.15);
            color: #b784ff;
            border: 1px solid rgba(121, 40, 202, 0.35);
            border-radius: 9999px;
            padding: 5px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        .badge-orange {
            background: rgba(255, 94, 58, 0.12);
            color: var(--accent-orange);
            border: 1px solid rgba(255, 94, 58, 0.3);
            border-radius: 9999px;
            padding: 5px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }

        /* 通用卡片与悬浮状态 */
        .tactics-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--card-radius-lg);
            padding: 28px;
            height: 100%;
            box-shadow: var(--card-shadow);
            transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1), border-color 0.3s, box-shadow 0.3s;
            position: relative;
            overflow: hidden;
        }
        .tactics-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 242, 254, 0.4);
            box-shadow: var(--glow-shadow);
        }
        .card-img-top-cover {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--card-radius-md);
            margin-bottom: 20px;
        }

        /* 标题文字排版 */
        .section-header {
            margin-bottom: 50px;
        }
        .section-title {
            color: var(--text-main);
            font-weight: 800;
            font-size: 2.15rem;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }
        .section-desc {
            color: var(--text-sub);
            font-size: 1.05rem;
            line-height: 1.7;
            max-width: 820px;
        }

        /* 首屏轮播 & 优惠券墙入口 */
        .hero-banner-wrap {
            position: relative;
            background: linear-gradient(180deg, rgba(10,13,20,0.6) 0%, rgba(10,13,20,0.95) 100%), url('/assets/images/6c17c059f0e73ca0.jpg') center/cover no-repeat;
            padding: 100px 0 80px 0;
            border-bottom: 1px solid var(--border-glass);
        }
        .coupon-box {
            background: linear-gradient(135deg, rgba(30, 20, 50, 0.9) 0%, rgba(18, 23, 34, 0.95) 100%);
            border: 2px dashed rgba(121, 40, 202, 0.6);
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.7);
        }
        .coupon-val {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-cyan);
            line-height: 1;
        }

        /* 对比面板 */
        .contrast-panel {
            background: rgba(18, 23, 34, 0.7);
            border: 1px solid var(--border-glass);
            border-radius: var(--card-radius-lg);
            padding: 32px;
        }
        .metric-progress {
            background: rgba(255, 255, 255, 0.06);
            height: 10px;
            border-radius: 5px;
            margin: 10px 0 20px;
            overflow: hidden;
        }
        .metric-bar-cyan {
            height: 100%;
            background: var(--accent-cyan);
            border-radius: 5px;
        }
        .metric-bar-muted {
            height: 100%;
            background: var(--text-muted);
            border-radius: 5px;
        }

        /* FAQ 手风琴重构 */
        .accordion-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            border-radius: 14px !important;
            margin-bottom: 16px;
            overflow: hidden;
        }
        .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 20px 24px;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(121, 40, 202, 0.12);
            color: var(--accent-cyan);
            border-bottom: 1px solid rgba(121, 40, 202, 0.2);
        }
        .accordion-button::after {
            filter: invert(1);
        }
        .accordion-body {
            color: var(--text-sub);
            padding: 20px 24px;
            line-height: 1.7;
        }

        /* 转化表单 */
        .cta-card-box {
            background: radial-gradient(circle at top, rgba(121,40,202,0.2) 0%, rgba(18,23,34,0.95) 70%);
            border: 1px solid rgba(121, 40, 202, 0.4);
            border-radius: 24px;
            padding: 50px 40px;
        }
        .form-control-dark {
            background: rgba(10, 13, 20, 0.8);
            border: 1px solid var(--border-glass);
            color: #fff;
            padding: 12px 18px;
            border-radius: 12px;
        }
        .form-control-dark:focus {
            background: rgba(10, 13, 20, 0.95);
            border-color: var(--accent-cyan);
            color: #fff;
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.25);
        }

        /* 页脚 */
        .site-footer {
            background: #06080D;
            border-top: 1px solid var(--border-glass);
            padding: 60px 0 30px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-title {
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 18px;
            font-size: 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }

        /* 响应式细节 */
        @media (max-width: 768px) {
            .section-block {
                padding: 55px 0;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .coupon-box {
                padding: 20px;
            }
            .coupon-val {
                font-size: 2.2rem;
            }
            .tactics-card {
                padding: 20px;
            }
            .cta-card-box {
                padding: 30px 20px;
            }
        }