/* roulang page: index */
/* 自定义 CSS 变量与设计系统 Bet5Sport Design v1.0 */
    :root {
      --primary: #0B3D2E;
      --primary-deep: #0B2B1F;
      --accent: #F5A623;
      --alert: #FF4D4D;
      --bg: #FAFAF8;
      --card: #FFFFFF;
      --text-main: #1A1F26;
      --text-soft: #5A6B7F;
      --border: #E8ECEF;
      --success: #00C853;
      --down: #FF1744;
      --radius-card: 16px;
      --radius-btn: 12px;
      --shadow-sm: 0 4px 24px rgba(11, 61, 46, 0.06);
      --shadow-hover: 0 8px 32px rgba(11, 61, 46, 0.12);
      --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
      --font-serif: 'DM Serif Display', Georgia, serif;
      --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
      --font-mono: 'JetBrains Mono', monospace;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 5vw;
    }

    /* 字体工具类 */
    .font-serif {
      font-family: var(--font-serif);
    }
    .font-mono {
      font-family: var(--font-mono);
    }

    /* 按钮体系 */
    .btn-primary {
      background: var(--primary);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      position: relative;
      overflow: hidden;
    }
    .btn-primary:hover {
      filter: brightness(1.15);
      box-shadow: 0 0 0 4px rgba(11,61,46,0.2);
      transform: translateY(-2px);
    }
    .btn-outline {
      border: 2px solid var(--primary);
      background: transparent;
      color: var(--primary);
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
    }
    .btn-accent {
      background: var(--accent);
      color: #1A1F26;
      border-radius: var(--radius-btn);
      padding: 16px 40px;
      font-weight: 700;
      box-shadow: 0 4px 14px rgba(245,166,35,0.4);
      animation: pulse 2s infinite;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-accent:hover {
      animation: none;
      transform: scale(1.05);
      box-shadow: 0 6px 20px rgba(245,166,35,0.6);
    }

    @keyframes pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.04); }
      100% { transform: scale(1); }
    }

    /* 卡片规范 */
    .card {
      background: var(--card);
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    /* 导航样式 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 5vw;
      z-index: 50;
      transition: background 0.3s, box-shadow 0.3s;
      background: transparent;
    }
    .navbar.scrolled {
      background: rgba(255,255,255,0.98);
      box-shadow: 0 1px 8px rgba(0,0,0,0.05);
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-links a {
      font-weight: 500;
      color: white;
      transition: color 0.2s;
      font-size: 1rem;
    }
    .navbar.scrolled .nav-links a {
      color: var(--text-main);
    }
    .nav-links a:hover {
      color: var(--accent);
    }
    .logo-text {
      font-size: 1.8rem;
      font-weight: 700;
      font-family: var(--font-serif);
      color: white;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar.scrolled .logo-text {
      color: var(--primary);
    }
    .logo-icon {
      font-size: 2rem;
      color: var(--accent);
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(11,43,30,0.92);
      backdrop-filter: blur(12px);
      justify-content: space-around;
      padding: 12px 8px;
      z-index: 60;
      border-top: 1px solid rgba(255,255,255,0.1);
    }
    .mobile-nav-item {
      color: rgba(255,255,255,0.7);
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 0.7rem;
      transition: 0.2s;
    }
    .mobile-nav-item i {
      font-size: 1.4rem;
      margin-bottom: 2px;
    }
    .mobile-nav-item.active {
      color: var(--accent);
    }

    @media (max-width: 768px) {
      .navbar .nav-links {
        display: none;
      }
      .mobile-bottom-nav {
        display: flex;
      }
    }

    /* 横向滚动条带（优势区） */
    .scroll-strip {
      display: flex;
      gap: 32px;
      overflow-x: auto;
      padding: 20px 0 30px;
      scrollbar-width: thin;
      scrollbar-color: var(--primary) #e0e0e0;
    }
    .scroll-strip::-webkit-scrollbar {
      height: 6px;
    }
    .scroll-strip::-webkit-scrollbar-thumb {
      background: var(--primary);
      border-radius: 10px;
    }
    .advantage-item {
      display: flex;
      gap: 24px;
      min-width: 320px;
      align-items: flex-start;
    }
    .big-number {
      font-size: 3.5rem;
      font-weight: 700;
      color: var(--primary);
      line-height: 1;
      font-family: var(--font-serif);
      opacity: 0.9;
    }

    /* 赔率闪烁动画 */
    .odds-up {
      color: var(--success);
      transition: 0.2s;
    }
    .odds-down {
      color: var(--down);
      transition: 0.2s;
    }

    /* 微光扫过卡片 */
    @keyframes shimmer {
      0% { background-position: -200% 0; }
      100% { background-position: 200% 0; }
    }
    .shimmer-card {
      background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(245,166,35,0.08) 50%, rgba(255,255,255,0) 100%);
      background-size: 200% 100%;
      animation: shimmer 3s infinite;
    }

    /* FAQ 手风琴 */
    .faq-details summary {
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      padding: 16px 0;
      cursor: pointer;
      border-bottom: 1px solid var(--border);
    }
    .faq-details summary::-webkit-details-marker {
      display: none;
    }
    .faq-details[open] summary i {
      transform: rotate(180deg);
    }

    /* 呼吸光效 CTA */
    .breath-glow:hover {
      box-shadow: 0 0 24px rgba(245,166,35,0.5);
      transition: 0.3s;
    }

.animate-marquee {
      animation: marquee 15s linear infinite;
    }
    @keyframes marquee {
      0% { transform: translateX(100%); }
      100% { transform: translateX(-100%); }
    }
    .odds-up { color: #00C853; }
    .odds-down { color: #FF1744; }