/* roulang page: index */
/* 自定义设计变量与补充样式，Tailwind 无法覆盖的渐变、动画等 */
    :root {
      --primary: #E8380D;
      --primary-dark: #C92D0A;
      --secondary: #1A1A2E;
      --accent: #FFB800;
      --bg-warm: #F5F5F0;
      --card-bg: #FFFFFF;
      --shadow-sm: 0 2px 12px rgba(26, 26, 46, 0.06);
      --shadow-hover: 0 8px 28px rgba(232, 56, 13, 0.12);
      --radius-xl: 20px;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-full: 9999px;
      --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      --font-number: 'Oswald', 'Noto Sans SC', sans-serif;
      --max-width: 1280px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: #1A1A2E;
      line-height: 1.6;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    button, .btn {
      cursor: pointer;
      font-family: var(--font-sans);
      transition: all 0.25s ease;
    }

    /* 容器 */
    .container-custom {
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 悬浮胶囊导航 */
    .nav-capsule {
      background: rgba(26, 26, 46, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: var(--radius-full);
      padding: 0.5rem 2rem;
      box-shadow: 0 10px 25px -5px rgba(0,0,0,0.3);
    }

    .nav-link {
      color: white;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s;
      position: relative;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--accent);
    }

    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 50%;
      transform: translateX(-50%);
      width: 6px;
      height: 6px;
      background: var(--accent);
      border-radius: 50%;
    }

    /* 动态比分跳动装饰 */
    .live-badge {
      background: rgba(232,56,13,0.2);
      color: #FFB800;
      border-radius: 20px;
      padding: 0.2rem 0.9rem;
      font-family: var(--font-number);
    }

    /* 径向渐变 Hero */
    .hero-gradient {
      background: radial-gradient(circle at 20% 20%, #E8380D, #1A1A2E 85%);
      position: relative;
      overflow: hidden;
    }

    .hero-gradient::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.15;
      mix-blend-mode: overlay;
      pointer-events: none;
    }

    /* 按钮系统 */
    .btn-primary {
      background-color: var(--primary);
      color: white;
      border-radius: var(--radius-full);
      padding: 0.75rem 2rem;
      font-weight: 600;
      border: none;
      box-shadow: 0 4px 10px rgba(232,56,13,0.3);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.25s;
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(232,56,13,0.4);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      border-radius: var(--radius-full);
      padding: 0.75rem 2rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
      transform: translateY(-2px);
    }

    /* 卡片通用 */
    .card-hover {
      background: white;
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      border: 1px solid transparent;
    }
    .card-hover:hover {
      box-shadow: var(--shadow-hover);
      border-color: rgba(232,56,13,0.15);
      transform: translateY(-6px);
    }

    /* 数据大数字 */
    .stat-number {
      font-family: var(--font-number);
      font-weight: 700;
      font-size: 3.5rem;
      line-height: 1.2;
      color: var(--primary);
    }

    /* CTA 横幅渐变 */
    .cta-strip {
      background: linear-gradient(90deg, #E8380D 0%, #FFB800 100%);
    }

    /* FAQ 手风琴动画 */
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.4s ease;
      padding: 0 1.5rem;
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      padding: 1rem 1.5rem 1.5rem;
    }
    .faq-item {
      background: white;
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
      transition: all 0.2s;
    }
    .faq-item.open {
      border-left: 3px solid var(--primary);
    }

    /* 移动端底部导航简化处理 */
    @media (max-width: 640px) {
      .nav-capsule {
        padding: 0.5rem 1.2rem;
        background: rgba(26,26,46,0.9);
      }
      .stat-number {
        font-size: 2.5rem;
      }
      .hero-title {
        font-size: 2.2rem;
        line-height: 1.3;
      }
    }

    /* 滚动指示箭头脉冲 */
    .scroll-indicator {
      animation: bounceDown 2s infinite;
    }
    @keyframes bounceDown {
      0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
      40% { transform: translateY(8px); }
      60% { transform: translateY(4px); }
    }