/* roulang page: index */
:root {
      --primary-orange: #F04E23;
      --primary-gold: #D4AF37;
      --deep-black: #1A1A1A;
      --charcoal: #242424;
      --pure-black: #0D0D0D;
      --text-light: #E0E0E0;
      --text-muted: #A0A0A0;
      --border-subtle: rgba(212, 175, 55, 0.25);
      --shadow-glow: 0 0 20px rgba(240, 78, 35, 0.4);
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Inter', 'Roboto', sans-serif;
      --transition-smooth: all 0.3s ease;
      --container-max: 1280px;
      --section-gap: 120px;
      --card-radius: 16px;
      --btn-radius: 8px;
    }

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

    body {
      background-color: var(--deep-black);
      color: var(--text-light);
      font-family: var(--font-sans);
      line-height: 1.8;
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(26, 26, 26, 0.85);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(212, 175, 55, 0.2);
      transition: var(--transition-smooth);
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary-orange);
      letter-spacing: -0.5px;
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo i {
      color: var(--primary-gold);
      font-size: 2rem;
    }

    .nav-links {
      display: flex;
      gap: 2.5rem;
      align-items: center;
    }

    .nav-links a {
      color: var(--text-light);
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      transition: color 0.2s;
      position: relative;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-gold);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--primary-orange);
      transition: width 0.3s;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--primary-gold);
      font-size: 1.8rem;
      cursor: pointer;
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
    }

    /* Hero */
    .hero-section {
      min-height: 100vh;
      background: linear-gradient(0deg, rgba(26,26,26,0.75) 0%, rgba(26,26,26,0.4) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      display: flex;
      align-items: center;
      position: relative;
      margin-top: 0;
      padding-top: 80px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
      width: 100%;
    }

    .hero-content h1 {
      font-size: 3.5rem;
      font-weight: 900;
      letter-spacing: -0.02em;
      background: linear-gradient(135deg, #F04E23 0%, #FF7A45 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 1.5rem;
      line-height: 1.2;
    }

    .hero-sub {
      font-size: 1.25rem;
      color: #CCCCCC;
      margin-bottom: 2rem;
      max-width: 500px;
    }

    .btn-group {
      display: flex;
      gap: 1.2rem;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--primary-orange);
      color: #000;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: var(--btn-radius);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition-smooth);
      border: none;
      cursor: pointer;
      letter-spacing: 0.5px;
    }

    .btn-primary:hover {
      background: #FF6B3D;
      transform: translateX(2px);
      box-shadow: 0 8px 25px rgba(240,78,35,0.5);
    }

    .btn-ghost {
      background: transparent;
      border: 1px solid var(--primary-gold);
      color: var(--primary-gold);
      padding: 14px 32px;
      border-radius: var(--btn-radius);
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition-smooth);
    }

    .btn-ghost:hover {
      background: rgba(212,175,55,0.15);
    }

    .hero-data-card {
      background: rgba(20,20,20,0.8);
      backdrop-filter: blur(16px);
      border: 1px solid var(--primary-gold);
      border-radius: 24px;
      padding: 2rem;
      box-shadow: 0 0 30px rgba(212,175,55,0.2);
    }

    .live-badge {
      color: var(--primary-orange);
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .odds-number {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--primary-gold);
      font-family: 'Inter', sans-serif;
    }

    /* 通用板块 */
    section {
      padding: var(--section-gap) 0;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--primary-gold);
      border-left: 4px solid var(--primary-orange);
      padding-left: 20px;
      margin-bottom: 3rem;
    }

    /* 数据看板 */
    .data-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }

    .stat-card {
      background: var(--charcoal);
      padding: 2rem 1.5rem;
      border-radius: var(--card-radius);
      text-align: center;
      transition: var(--transition-smooth);
    }
    .stat-card:hover {
      box-shadow: var(--shadow-glow);
      transform: translateY(-5px);
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary-gold);
      font-family: 'Inter', sans-serif;
      animation: pulse-gold 2s infinite;
    }
    @keyframes pulse-gold {
      0% { opacity: 0.9; } 50% { opacity: 1; text-shadow: 0 0 10px #D4AF37; } 100% { opacity: 0.9; }
    }

    /* 服务网格 2x3 不规则 */
    .services-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 24px;
    }
    .service-card {
      background: var(--charcoal);
      border-radius: var(--card-radius);
      padding: 32px;
      border-top: 4px solid var(--primary-orange);
      transition: var(--transition-smooth);
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-glow);
    }
    .service-card.large {
      grid-column: span 2;
    }
    .service-icon {
      font-size: 2rem;
      color: var(--primary-gold);
      margin-bottom: 1rem;
    }

    /* 对比表 */
    .compare-wrapper {
      display: grid;
      grid-template-columns: 1fr 20px 1fr;
      align-items: center;
    }
    .compare-col {
      background: #1E1E1E;
      border-radius: 20px;
      padding: 2.5rem;
    }
    .compare-col.best {
      border: 1px solid var(--primary-orange);
      background: #2A2A2A;
      box-shadow: 0 0 25px rgba(240,78,35,0.3);
    }
    .vs-divider {
      font-weight: 900;
      color: var(--primary-orange);
      font-size: 1.5rem;
      text-align: center;
    }

    /* FAQ */
    .faq-layout {
      display: grid;
      grid-template-columns: 240px 1fr;
      gap: 2rem;
    }
    .faq-categories button {
      display: block;
      width: 100%;
      background: none;
      border: none;
      color: #aaa;
      padding: 12px 16px;
      text-align: left;
      font-weight: 600;
      cursor: pointer;
      border-left: 3px solid transparent;
    }
    .faq-categories button.active {
      color: var(--primary-gold);
      border-left-color: var(--primary-orange);
    }
    .accordion-item {
      background: var(--charcoal);
      border-radius: 12px;
      margin-bottom: 12px;
    }
    .accordion-btn {
      width: 100%;
      background: none;
      border: none;
      color: white;
      padding: 20px;
      text-align: left;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
    }

    /* CTA */
    .cta-section {
      background: #0D0D0D;
      position: relative;
      overflow: hidden;
    }
    .cta-form input {
      background: #2A2A2A;
      border: none;
      border-bottom: 2px solid var(--primary-orange);
      padding: 14px;
      width: 100%;
      color: white;
      margin-bottom: 20px;
    }
    .submit-btn {
      background: var(--primary-orange);
      color: white;
      font-weight: bold;
      padding: 16px;
      width: 100%;
      border: none;
      border-radius: var(--btn-radius);
    }

    footer {
      background: var(--pure-black);
      padding: 60px 0 30px;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr 1fr; }
      .service-card.large { grid-column: span 1; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-toggle { display: block; }
      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 16px;
        left: 16px;
        right: 16px;
        background: rgba(13,13,13,0.95);
        backdrop-filter: blur(20px);
        border-radius: 40px;
        padding: 12px 20px;
        justify-content: space-around;
        z-index: 999;
        border: 1px solid #333;
      }
      .data-grid { grid-template-columns: repeat(2,1fr); }
      .faq-layout { grid-template-columns: 1fr; }
    }