/* roulang page: index */
:root {
      --bg-deep: #0B0E14;
      --bg-card: rgba(20, 26, 38, 0.85);
      --cyan: #00E5FF;
      --orange: #FF6B35;
      --green: #00C853;
      --gold: #FFD600;
      --text-primary: #FFFFFF;
      --text-secondary: #B0B8C4;
      --text-muted: #6B7280;
      --border-glass: rgba(0, 229, 255, 0.15);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --glow-cyan: 0 0 20px rgba(0, 229, 255, 0.1);
      --radius-card: 16px;
      --radius-btn: 12px;
      --radius-capsule: 50px;
      --font-number: 'Inter', 'Roboto', 'DIN Alternate', sans-serif;
      --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --container: 1280px;
      --section-gap: 120px;
      --card-gap: 24px;
      --transition-smooth: all 0.25s ease;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-deep);
    }

    body {
      font-family: var(--font-chinese);
      background: var(--bg-deep);
      color: var(--text-secondary);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

    button, .btn {
      cursor: pointer;
      font-family: inherit;
    }

    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    ::-webkit-scrollbar-track {
      background: #0B0E14;
    }
    ::-webkit-scrollbar-thumb {
      background: #2A303C;
      border-radius: 3px;
    }
    ::-webkit-scrollbar-thumb:hover {
      background: #00E5FF;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card), var(--glow-cyan);
    }

    .glass-nav {
      background: rgba(11, 14, 20, 0.9);
      backdrop-filter: blur(30px);
      -webkit-backdrop-filter: blur(30px);
      border: 1px solid rgba(0, 229, 255, 0.2);
      border-radius: var(--radius-capsule);
    }

    /* 按钮系统 */
    .btn-glow-primary {
      background: linear-gradient(135deg, #FF6B35, #FF8F5E);
      color: #fff;
      border: none;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 16px;
      box-shadow: 0 0 30px rgba(255, 107, 53, 0.5);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.2s ease;
      letter-spacing: 0.5px;
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 40px rgba(255, 107, 53, 0.7);
      transform: scale(1.03);
    }

    .btn-glow-secondary {
      background: transparent;
      border: 2px solid var(--cyan);
      color: var(--cyan);
      padding: 12px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 16px;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-glow-secondary:hover {
      background: var(--cyan);
      color: #0B0E14;
      box-shadow: 0 0 30px rgba(0, 229, 255, 0.5);
      transform: scale(1.03);
    }

    .text-gradient-cyan {
      background: linear-gradient(135deg, #00E5FF, #00B8D4);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .text-gradient-orange {
      background: linear-gradient(135deg, #FF6B35, #FF8F5E);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* 导航 */
    .main-nav {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 32px);
      max-width: 1100px;
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 28px;
      transition: background 0.3s ease;
    }
    .nav-logo {
      font-size: 24px;
      font-weight: 800;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 6px;
      letter-spacing: 1px;
      font-family: var(--font-number);
    }
    .nav-logo span {
      color: var(--cyan);
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-links a {
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 15px;
      position: relative;
      padding: 4px 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 50%;
      width: 0;
      height: 2px;
      background: var(--cyan);
      transition: 0.2s ease;
      transform: translateX(-50%);
    }
    .nav-links a:hover {
      color: #fff;
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-cta {
      background: var(--cyan);
      color: #0B0E14;
      font-weight: 700;
      padding: 8px 20px;
      border-radius: 30px;
      font-size: 14px;
      transition: 0.2s;
    }
    .nav-cta:hover {
      background: #fff;
      box-shadow: 0 0 20px var(--cyan);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
    }
    .hamburger span {
      width: 24px;
      height: 2px;
      background: #fff;
      border-radius: 2px;
      transition: 0.2s;
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      background-color: rgba(11,14,20,0.65);
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(11,14,20,0.7) 0%, rgba(11,14,20,0.95) 100%);
    }
    .hero .container {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-left h1 {
      font-size: 56px;
      font-weight: 800;
      line-height: 1.2;
      color: #fff;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .live-card {
      background: rgba(20,26,38,0.9);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(0,229,255,0.25);
      border-radius: 20px;
      padding: 24px;
      box-shadow: 0 0 30px rgba(0,229,255,0.2);
    }
    .live-match {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }
    .odds {
      color: var(--orange);
      font-family: var(--font-number);
    }

    /* 区块通用 */
    section {
      padding: var(--section-gap) 0;
    }
    .section-title {
      font-size: 42px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      text-align: center;
    }
    .section-sub {
      color: var(--text-secondary);
      text-align: center;
      max-width: 640px;
      margin: 0 auto 48px;
    }

    /* 痛点 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
      gap: var(--card-gap);
    }
    .pain-card {
      background: rgba(20,26,38,0.8);
      border-left: 4px solid #FF3D00;
      padding: 28px;
      border-radius: 16px;
      transition: 0.25s;
    }
    .pain-card:hover {
      border-color: var(--cyan);
      box-shadow: 0 0 24px rgba(0,229,255,0.2);
    }

    /* 功能栅格 */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: var(--card-gap);
    }
    .feature-card {
      text-align: center;
      padding: 32px 20px;
    }
    .feature-icon {
      font-size: 40px;
      margin-bottom: 16px;
    }

    /* 数据区 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 24px;
      text-align: center;
    }
    .stat-number {
      font-size: 64px;
      font-weight: 700;
      font-family: var(--font-number);
      background: linear-gradient(135deg, #00E5FF, #FF6B35);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    /* 证言滚动 */
    .testimonials-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding: 16px 0;
      scroll-snap-type: x mandatory;
    }
    .testimonial-card {
      min-width: 320px;
      background: rgba(20,26,38,0.8);
      backdrop-filter: blur(12px);
      border-radius: 20px;
      padding: 24px;
      scroll-snap-align: start;
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 18px 0;
      cursor: pointer;
    }
    .faq-question {
      font-weight: 600;
      font-size: 18px;
      color: #fff;
      display: flex;
      justify-content: space-between;
    }

    /* CTA Banner */
    .cta-banner {
      background: radial-gradient(circle at center, rgba(0,229,255,0.15) 0%, #0B0E14 70%);
      text-align: center;
      padding: 80px 20px;
      border-radius: 32px;
    }

    /* 页脚 */
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }

    @media (max-width: 1024px) {
      .hero .container { grid-template-columns: 1fr; }
      .feature-grid { grid-template-columns: repeat(2,1fr); }
      .stats-grid { grid-template-columns: repeat(2,1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 640px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .hero-left h1 { font-size: 36px; }
      .feature-grid, .stats-grid, .footer-grid { grid-template-columns: 1fr; }
      .section-title { font-size: 32px; }
    }