/* roulang page: index */
:root {
      --primary-magma: #E63946;
      --secondary-onyx: #1A1A1A;
      --accent-amber: #F4A261;
      --surface-card: #252525;
      --text-light: #F0F0F0;
      --text-muted: #A0A0A0;
      --border-subtle: rgba(255,255,255,0.05);
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-pill: 50px;
      --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
      --shadow-hover: 0 16px 48px rgba(230,57,70,0.25);
      --transition-smooth: 0.3s ease;
      --font-heading: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      --font-mono: 'Courier New', monospace;
    }

    * {
      box-sizing: border-box;
    }

    body {
      background-color: var(--secondary-onyx);
      color: var(--text-light);
      font-family: var(--font-heading);
      font-weight: 400;
      line-height: 1.6;
      margin: 0;
      overflow-x: hidden;
    }

    h1, h2, h3, .h1, .h2, .h3 {
      font-weight: 800;
      letter-spacing: -0.02em;
    }
    h1 {
      font-size: 3.5rem;
      font-weight: 900;
    }
    h2 {
      font-size: 2.5rem;
      font-weight: 800;
    }
    h3 {
      font-size: 1.5rem;
      font-weight: 700;
    }
    .data-large {
      font-family: var(--font-mono);
      font-weight: 800;
      font-size: 2rem;
    }
    a {
      color: var(--accent-amber);
      text-decoration: none;
      transition: color var(--transition-smooth);
    }
    a:hover {
      color: var(--primary-magma);
    }
    img {
      max-width: 100%;
      height: auto;
    }

    /* 容器微调 */
    .container-custom {
      max-width: 1320px;
      margin: 0 auto;
      padding-left: 15px;
      padding-right: 15px;
    }

    /* 按钮系统 */
    .btn-primary-magma {
      background: linear-gradient(135deg, var(--primary-magma), var(--accent-amber));
      border: none;
      color: white;
      border-radius: var(--radius-pill);
      padding: 14px 32px;
      font-weight: 700;
      letter-spacing: 0.5px;
      transition: all var(--transition-smooth);
      box-shadow: 0 4px 15px rgba(230,57,70,0.2);
    }
    .btn-primary-magma:hover {
      background: linear-gradient(135deg, #C1292E, #E08A4A);
      box-shadow: 0 8px 25px rgba(230,57,70,0.5);
      transform: translateY(-1px);
      color: white;
    }
    .btn-ghost-amber {
      border: 2px solid var(--accent-amber);
      color: var(--accent-amber);
      background: transparent;
      border-radius: var(--radius-pill);
      padding: 12px 30px;
      font-weight: 700;
      transition: all var(--transition-smooth);
    }
    .btn-ghost-amber:hover {
      background: var(--accent-amber);
      color: var(--secondary-onyx);
      border-color: var(--accent-amber);
    }

    /* 导航 */
    .navbar-custom {
      background: rgba(26,26,26,0.95);
      backdrop-filter: blur(12px);
      height: 72px;
      box-shadow: 0 2px 15px rgba(0,0,0,0.6);
      position: fixed;
      width: 100%;
      top: 0;
      z-index: 1000;
    }
    .logo-text {
      font-size: 1.5rem;
      font-weight: 900;
      color: white;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo-icon {
      color: var(--primary-magma);
      font-size: 1.8rem;
    }
    .nav-link-custom {
      color: #cccccc;
      font-weight: 600;
      font-size: 0.95rem;
      margin: 0 10px;
      transition: color 0.2s;
    }
    .nav-link-custom:hover {
      color: var(--accent-amber);
    }
    .search-icon {
      color: var(--text-muted);
      font-size: 1.2rem;
      cursor: pointer;
      transition: color 0.2s;
    }
    .search-icon:hover {
      color: var(--accent-amber);
    }
    .login-btn {
      border: 1px solid var(--accent-amber);
      color: var(--accent-amber);
      background: transparent;
      border-radius: 30px;
      padding: 8px 22px;
      font-weight: 600;
      transition: all 0.2s;
    }
    .login-btn:hover {
      background: rgba(244,162,97,0.1);
      color: var(--accent-amber);
    }
    .bet-now-btn {
      background: linear-gradient(135deg, var(--primary-magma), var(--accent-amber));
      border: none;
      color: white;
      border-radius: 30px;
      padding: 10px 25px;
      font-weight: 700;
      margin-left: 8px;
      transition: all 0.2s;
    }
    @media (max-width: 768px) {
      .navbar-custom {
        height: auto;
      }
      h1 {
        font-size: 2.5rem;
      }
      h2 {
        font-size: 2rem;
      }
    }

    /* Hero */
    .hero-section {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      margin-top: 72px;
    }
    .hero-overlay {
      background: radial-gradient(circle at center, transparent 10%, rgba(26,26,26,0.85) 90%);
      position: absolute;
      top:0;left:0;width:100%;height:100%;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      width: 100%;
    }
    .highlight-gradient {
      background: linear-gradient(135deg, var(--primary-magma), var(--accent-amber));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .data-badge {
      background: rgba(37,37,37,0.8);
      border-radius: 50px;
      padding: 12px 24px;
      backdrop-filter: blur(5px);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      margin: 5px;
    }
    .badge-number {
      font-family: var(--font-mono);
      color: var(--accent-amber);
      font-weight: 800;
    }

    /* 卡片通用 */
    .card-custom {
      background: var(--surface-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      transition: all var(--transition-smooth);
    }
    .card-custom:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    /* 核心优势卡片 */
    .advantage-icon {
      font-size: 2.5rem;
      color: var(--accent-amber);
    }

    /* 数据看板 */
    .dashboard-card {
      background: var(--surface-card);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .trend-up { color: #E63946; }
    .trend-down { color: #2ECC71; }

    /* 时间轴 */
    .step-badge {
      background: var(--primary-magma);
      color: white;
      border-radius: 50%;
      width: 36px;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
    }

    /* 名人堂 */
    .hall-card {
      background: rgba(37,37,37,0.7);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-lg);
    }

    /* FAQ */
    .accordion-button-custom {
      background: var(--surface-card);
      color: var(--text-light);
      font-weight: 700;
      border-radius: var(--radius-md) !important;
      padding: 20px;
      transition: 0.3s;
    }
    .accordion-button:not(.collapsed) {
      background: #1E1E1E;
      border-left: 4px solid var(--primary-magma);
    }

    /* 终极CTA */
    .cta-section {
      background: #111111;
    }
    .blink-badge {
      animation: pulse 1.8s infinite;
      background: linear-gradient(135deg, var(--primary-magma), var(--accent-amber));
    }
    @keyframes pulse {
      0% { opacity: 1; }
      50% { opacity: 0.7; }
      100% { opacity: 1; }
    }

    footer {
      background: #111111;
      color: var(--text-muted);
    }
    .social-icon {
      width: 40px;
      height: 40px;
      border: 1px solid var(--text-muted);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-right: 10px;
      transition: 0.3s;
    }
    .social-icon:hover {
      background: linear-gradient(135deg, var(--primary-magma), var(--accent-amber));
      border-color: transparent;
      color: white;
    }