/* roulang page: index */
:root {
      --primary: #0A1428;
      --primary-soft: #1B2A4A;
      --gold: #C89B3C;
      --gold-light: #e0b354;
      --accent: #E84A5F;
      --bg: #F0F2F5;
      --text: #1A1A1A;
      --text-muted: #5A5A5A;
      --white: #FFFFFF;
      --card-shadow: 0 4px 20px rgba(10,20,40,0.08);
      --card-hover-shadow: 0 8px 30px rgba(10,20,40,0.15);
      --border-light: rgba(10,20,40,0.06);
      --radius-lg: 16px;
      --radius-md: 10px;
      --radius-pill: 20px;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --transition: 0.25s ease;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }
    /* 导航 */
    .nav-bar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(10,20,40,0.85);
      backdrop-filter: blur(8px);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      z-index: 1000;
      transition: background 0.3s;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    .nav-bar.scrolled {
      background: var(--primary);
    }
    .logo {
      font-weight: 700;
      font-size: 1.6rem;
      color: var(--white);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo-icon {
      width: 28px;
      height: 28px;
      background: var(--gold);
      mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13 2L3 14h8l-1 8 10-12h-8l1-8z"/></svg>') center/contain no-repeat;
      -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13 2L3 14h8l-1 8 10-12h-8l1-8z"/></svg>') center/contain no-repeat;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
      list-style: none;
    }
    .nav-links a {
      color: rgba(255,255,255,0.8);
      font-weight: 500;
      font-size: 0.95rem;
      transition: color var(--transition);
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--gold);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--gold);
      border-radius: 2px;
    }
    .nav-cta {
      background: var(--gold);
      color: var(--primary) !important;
      padding: 8px 20px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      margin-left: 16px;
      transition: all var(--transition);
    }
    .nav-cta:hover {
      background: var(--gold-light);
      box-shadow: 0 4px 12px rgba(200,155,60,0.4);
    }
    .burger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
    }
    .burger span {
      width: 25px;
      height: 2px;
      background: var(--white);
      border-radius: 2px;
      transition: 0.3s;
    }
    /* Hero */
    .hero {
      padding: 140px 0 80px;
      background: linear-gradient(135deg, #0A1428 0%, #1B2A4A 100%);
      position: relative;
      overflow: hidden;
      color: var(--white);
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -50%;
      right: -20%;
      width: 80%;
      height: 200%;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.08;
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero h1 {
      font-size: 2.8rem;
      font-weight: 700;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .hero-sub {
      font-size: 1.1rem;
      color: rgba(255,255,255,0.7);
      margin-bottom: 32px;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--gold);
      color: var(--primary);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-pill);
      display: inline-block;
      transition: all var(--transition);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: var(--gold-light);
      box-shadow: 0 6px 18px rgba(200,155,60,0.5);
      transform: translateY(-2px);
    }
    .btn-outline {
      border: 1px solid var(--gold);
      color: var(--gold);
      background: transparent;
      padding: 12px 28px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      transition: all var(--transition);
      cursor: pointer;
    }
    .btn-outline:hover {
      background: rgba(200,155,60,0.1);
      border-color: var(--gold-light);
      color: var(--gold-light);
    }
    .live-card {
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(10px);
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid rgba(255,255,255,0.15);
      box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    }
    .live-teams {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }
    .team {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
    }
    .team-badge {
      width: 40px;
      height: 40px;
      background: #2a3a5a;
      border-radius: 50%;
      border: 2px solid var(--gold);
    }
    .live-score {
      font-size: 2.4rem;
      font-weight: 700;
      font-family: 'Inter', sans-serif;
      color: var(--white);
    }
    .live-badge {
      background: var(--accent);
      color: white;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.8rem;
      animation: pulse 1.8s infinite;
      display: inline-block;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.7; transform: scale(1.05); }
      100% { opacity: 1; transform: scale(1); }
    }
    .match-time {
      color: rgba(255,255,255,0.6);
      font-size: 0.9rem;
    }
    .badge-row {
      display: flex;
      gap: 20px;
      justify-content: center;
      margin-top: 40px;
      flex-wrap: wrap;
    }
    .stat-badge {
      background: rgba(255,255,255,0.1);
      border-radius: var(--radius-pill);
      padding: 10px 20px;
      font-weight: 600;
      backdrop-filter: blur(4px);
    }
    /* Sections */
    section {
      padding: 80px 0;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 16px;
      text-align: center;
    }
    .section-desc {
      color: var(--text-muted);
      text-align: center;
      max-width: 700px;
      margin: 0 auto 48px;
    }
    /* Advantages */
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(2,1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
      transition: all var(--transition);
      display: flex;
      gap: 20px;
      align-items: flex-start;
      border-top: 3px solid transparent;
    }
    .adv-card:hover {
      box-shadow: var(--card-hover-shadow);
      border-top-color: var(--gold);
      transform: translateY(-4px);
    }
    .adv-icon {
      font-size: 2rem;
      color: var(--gold);
      min-width: 40px;
    }
    /* features 横向滚动 */
    .scroll-wrapper {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      padding-bottom: 16px;
      scroll-snap-type: x mandatory;
    }
    .feature-card {
      min-width: 300px;
      background: var(--white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      scroll-snap-align: start;
      transition: var(--transition);
    }
    .feature-card:hover {
      box-shadow: var(--card-hover-shadow);
    }
    .feature-img {
      height: 160px;
      background-size: cover;
      background-position: center;
    }
    .feature-body {
      padding: 20px;
    }
    /* scenarios */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 24px;
    }
    .scene-item {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--card-shadow);
    }
    /* stats 深色面板 */
    .stats-panel {
      background: var(--primary);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      color: white;
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 30px;
      text-align: center;
    }
    .stat-number {
      font-size: 3rem;
      font-weight: 700;
      font-family: 'Inter', sans-serif;
      color: var(--gold);
    }
    /* FAQ */
    .faq-item {
      background: var(--white);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      box-shadow: var(--card-shadow);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-left: 4px solid transparent;
      transition: 0.2s;
    }
    .faq-item.active .faq-question {
      border-left-color: var(--gold);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px;
    }
    /* CTA */
    .cta-section {
      background: linear-gradient(135deg, #C89B3C 0%, #0A1428 100%);
      text-align: center;
      padding: 80px 24px;
      color: white;
      border-radius: 24px;
      margin: 40px 0;
    }
    /* Footer */
    .footer {
      background: var(--primary);
      color: rgba(255,255,255,0.7);
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }
    .copyright {
      border-top: 1px solid rgba(255,255,255,0.1);
      margin-top: 40px;
      padding-top: 20px;
      text-align: center;
      font-size: 0.9rem;
    }
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .scene-grid { grid-template-columns: repeat(2,1fr); }
      .stats-panel { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .burger { display: flex; }
      .hero h1 { font-size: 2rem; }
      .adv-grid { grid-template-columns: 1fr; }
      .scene-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .mobile-menu {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(10,20,40,0.98);
        padding: 30px;
        flex-direction: column;
        gap: 24px;
        z-index: 999;
      }
      .mobile-menu.open { display: flex; }
    }