/* roulang page: index */
:root {
      --primary: #E30613;
      --primary-dark: #C00510;
      --secondary: #1B1E2B;
      --accent: #FFB800;
      --bg-light: #F5F5F7;
      --bg-dark: #14161F;
      --card-bg: #FFFFFF;
      --text-main: #1B1E2B;
      --text-muted: #5A5D6E;
      --text-light: rgba(255,255,255,0.7);
      --success: #00C853;
      --warning: #CF6679;
      --border-light: #E5E7EB;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --shadow-card: 0 4px 16px rgba(27,30,43,0.08);
      --shadow-hover: 0 8px 24px rgba(227,6,19,0.12);
      --font-number: 'Roboto Condensed', 'DIN Alternate', 'Bebas Neue', sans-serif;
      --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
      --spacing-section: 5rem;
      --max-width: 1280px;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-body);
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s;
    }
    button, .btn {
      cursor: pointer;
      font-family: var(--font-body);
      border: none;
      background: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.25s ease;
    }
    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(27, 30, 43, 0.92);
      backdrop-filter: blur(12px);
      z-index: 1000;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 1.5rem;
      color: white;
      letter-spacing: -0.3px;
    }
    .logo-icon {
      width: 32px;
      height: 32px;
      background: var(--primary);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 18px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-links a {
      color: rgba(255,255,255,0.85);
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
      padding: 4px 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: width 0.25s;
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .btn-primary-nav {
      background: var(--primary);
      color: white;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.9rem;
    }
    .btn-primary-nav:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: white;
      font-size: 1.8rem;
      line-height: 1;
    }
    /* 底部移动导航 */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: white;
      box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
      z-index: 999;
      padding: 8px 16px;
      justify-content: space-around;
      align-items: center;
      border-top: 1px solid #eee;
    }
    .mobile-bottom-nav a {
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 0.7rem;
      color: #5A5D6E;
      gap: 2px;
    }
    .mobile-bottom-nav .center-cta {
      background: var(--primary);
      color: white;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-top: -20px;
      box-shadow: 0 4px 12px rgba(227,6,19,0.3);
    }
    /* Hero */
    .hero {
      padding: 140px 0 80px;
      background: linear-gradient(135deg, #1B1E2B 0%, #2A2D3E 100%);
      position: relative;
      overflow: hidden;
      min-height: 85vh;
      display: flex;
      align-items: center;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 40px;
      position: relative;
      z-index: 2;
    }
    .hero-left {
      flex: 1 1 50%;
    }
    .hero-right {
      flex: 1 1 50%;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .hero h1 {
      font-size: 2.8rem;
      font-weight: 700;
      line-height: 1.25;
      color: white;
      margin-bottom: 1.2rem;
      letter-spacing: -0.5px;
    }
    .hero-sub {
      font-size: 1.15rem;
      color: rgba(255,255,255,0.8);
      margin-bottom: 2rem;
      max-width: 480px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-main {
      background: var(--primary);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 1rem;
    }
    .btn-main:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(227,6,19,0.35);
    }
    .btn-outline-light {
      background: transparent;
      border: 2px solid var(--primary);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
    }
    .btn-outline-light:hover {
      background: var(--primary);
      color: white;
    }
    .data-float-card {
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(8px);
      border-radius: 16px;
      padding: 16px 20px;
      border: 1px solid rgba(255,255,255,0.15);
      color: white;
    }
    .live-badge {
      background: var(--primary);
      color: white;
      font-size: 0.7rem;
      padding: 2px 8px;
      border-radius: 12px;
      display: inline-block;
    }
    .odds-number {
      font-family: var(--font-number);
      font-size: 2rem;
      font-weight: 700;
      color: var(--accent);
    }
    /* 通用区块 */
    section {
      padding: var(--spacing-section) 0;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 0.8rem;
      color: var(--secondary);
    }
    .section-sub {
      color: var(--text-muted);
      margin-bottom: 2.5rem;
    }
    /* 指标看板 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--secondary);
      border-radius: 24px;
      padding: 32px 24px;
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-number);
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 4px;
    }
    .stat-label {
      color: rgba(255,255,255,0.7);
      font-size: 0.9rem;
    }
    /* 服务卡片 */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: all 0.3s;
      border: 1px solid transparent;
    }
    .service-card:hover {
      transform: translateY(-6px);
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      color: var(--primary);
      margin-bottom: 18px;
    }
    .card-title {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    /* 对比表 */
    .compare-table {
      background: white;
      border-radius: 20px;
      padding: 28px;
      max-width: 900px;
      margin: 0 auto;
      box-shadow: var(--shadow-card);
    }
    .compare-row {
      display: flex;
      justify-content: space-between;
      padding: 14px 0;
      border-bottom: 1px solid #f0f0f0;
    }
    .left-compare { color: #CF6679; }
    .right-compare { color: #00C853; font-weight: 600; }
    /* FAQ */
    .faq-item {
      background: white;
      border-radius: 12px;
      margin-bottom: 12px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
      border-left: 4px solid var(--primary);
      transition: 0.2s;
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      background: none;
      width: 100%;
      text-align: left;
    }
    .faq-answer {
      padding: 0 24px 20px;
      color: var(--text-muted);
      display: none;
    }
    .faq-item.open .faq-answer {
      display: block;
    }
    /* CTA */
    .cta-dark {
      background: var(--secondary);
      border-radius: 24px;
      padding: 50px 30px;
      text-align: center;
      color: white;
      position: relative;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
    }
    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 400px;
      margin: 24px auto 0;
    }
    .cta-input {
      background: #2A2D3E;
      border: 1px solid #3F4255;
      color: white;
      padding: 14px;
      border-radius: var(--radius-input);
      font-size: 1rem;
    }
    .cta-input:focus {
      border-color: var(--accent);
      outline: none;
      box-shadow: 0 0 0 3px rgba(255,184,0,0.25);
    }
    .footer {
      background: var(--bg-dark);
      color: rgba(255,255,255,0.7);
      padding: 50px 0 20px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
    }
    @media (max-width: 1024px) {
      .hero-grid { flex-direction: column; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .cards-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-links, .btn-primary-nav { display: none; }
      .mobile-menu-btn { display: block; }
      .mobile-bottom-nav { display: flex; }
      .hero h1 { font-size: 2rem; }
      .cards-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }