/* roulang page: index */
:root {
      --bg-deep: #0D1124;
      --bg-card: #141A33;
      --primary-deep: #0A0E27;
      --accent-red: #FF4655;
      --accent-red-hover: #FF6B7A;
      --neon-cyan: #00E5FF;
      --text-main: #E8ECF4;
      --text-dim: #9BA4B8;
      --border-card: rgba(0, 229, 255, 0.18);
      --border-glow: rgba(0, 229, 255, 0.45);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow-glow: 0 0 24px rgba(0, 229, 255, 0.15);
      --shadow-elevate: 0 12px 28px rgba(0, 0, 0, 0.35);
      --font-title: 'Segoe UI', 'Inter', 'Rajdhani', '思源黑体', '阿里妈妈数黑体', system-ui, sans-serif;
      --font-body: 'Segoe UI', 'Inter', '思源黑体', system-ui, -apple-system, sans-serif;
      --transition-fast: 0.2s cubic-bezier(0.23, 1, 0.32, 1);
    }

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

    body {
      font-family: var(--font-body);
      background-color: var(--bg-deep);
      color: var(--text-main);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
    }

    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部信息条 */
    .top-bar {
      background-color: #0A0E27;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      font-size: 0.8rem;
      color: var(--text-dim);
      border-bottom: 1px solid rgba(0, 229, 255, 0.1);
    }
    .top-bar .site-domain i {
      color: var(--neon-cyan);
      margin-right: 6px;
    }
    .top-bar .quick-contact a {
      color: var(--text-dim);
      text-decoration: none;
      font-weight: 500;
      transition: color var(--transition-fast);
    }
    .top-bar .quick-contact a:hover {
      color: var(--neon-cyan);
    }

    /* 主导航 */
    header {
      background: rgba(10, 14, 39, 0.9);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0, 229, 255, 0.15);
      position: sticky;
      top: 0;
      z-index: 50;
    }
    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.8rem 0;
    }
    .logo {
      font-family: var(--font-title);
      font-size: 1.8rem;
      font-weight: 700;
      color: #fff;
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 6px;
      letter-spacing: 1px;
    }
    .logo i {
      color: var(--accent-red);
      font-size: 1.8rem;
    }
    .logo span {
      color: var(--neon-cyan);
    }
    .nav-links {
      display: flex;
      gap: 2rem;
      align-items: center;
    }
    .nav-links a {
      color: var(--text-dim);
      text-decoration: none;
      font-weight: 600;
      font-size: 0.95rem;
      position: relative;
      padding: 0.3rem 0;
      transition: color var(--transition-fast);
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: #fff;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--neon-cyan);
      transition: width var(--transition-fast);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .menu-icon {
      display: none;
      font-size: 1.6rem;
      color: #fff;
    }

    /* Hero */
    .hero {
      display: flex;
      align-items: center;
      min-height: 580px;
      background: radial-gradient(circle at 30% 10%, #1a2340, #0A0E27 80%);
      position: relative;
      overflow: hidden;
    }
    .hero-left {
      flex: 1;
      padding-right: 2rem;
      z-index: 2;
    }
    .hero-left h1 {
      font-family: var(--font-title);
      font-size: 3.2rem;
      font-weight: 800;
      line-height: 1.2;
      color: #fff;
      text-shadow: 0 0 18px rgba(0,229,255,0.3);
    }
    .hero-left .sub {
      font-size: 1.2rem;
      color: var(--text-dim);
      margin: 1.2rem 0 2rem;
    }
    .hero-buttons {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--accent-red);
      color: #fff;
      border: none;
      padding: 0.8rem 2rem;
      border-radius: 30px;
      font-weight: bold;
      font-size: 1rem;
      cursor: pointer;
      transition: background var(--transition-fast), box-shadow var(--transition-fast);
      text-decoration: none;
      display: inline-block;
    }
    .btn-primary:hover {
      background: var(--accent-red-hover);
      box-shadow: 0 0 20px rgba(255,70,85,0.5);
    }
    .btn-ghost {
      background: transparent;
      border: 1.5px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 0.8rem 2rem;
      border-radius: 30px;
      font-weight: bold;
      text-decoration: none;
      transition: all var(--transition-fast);
    }
    .btn-ghost:hover {
      background: rgba(0,229,255,0.1);
      border-color: #fff;
    }
    .hero-right {
      flex: 1;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      min-height: 400px;
      border-radius: var(--radius-lg);
      position: relative;
      box-shadow: 0 0 35px rgba(0,229,255,0.25);
    }
    .hero-right::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(10,14,39,0.7), rgba(0,0,0,0.5));
      border-radius: var(--radius-lg);
    }
    .live-stats {
      position: absolute;
      bottom: 20px;
      right: 20px;
      background: rgba(0,0,0,0.7);
      backdrop-filter: blur(8px);
      padding: 0.7rem 1.5rem;
      border-radius: 40px;
      display: flex;
      gap: 1.2rem;
      color: #fff;
      z-index: 3;
      border: 1px solid rgba(0,229,255,0.4);
    }

    /* 区块标题 */
    .section-title {
      font-family: var(--font-title);
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 2.5rem;
      text-align: center;
      color: #fff;
      position: relative;
    }
    .section-title span {
      color: var(--neon-cyan);
    }

    /* 核心优势网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      margin: 3rem 0;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      text-align: center;
      transition: all var(--transition-fast);
    }
    .feature-card:hover {
      transform: translateY(-4px);
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-glow);
    }
    .feature-card i {
      font-size: 2.5rem;
      color: var(--neon-cyan);
      margin-bottom: 1rem;
    }
    .feature-card h3 {
      font-size: 1.4rem;
      font-weight: 700;
    }

    /* 赛事瀑布流 */
    .waterfall {
      columns: 3 280px;
      column-gap: 1.5rem;
      margin: 2rem 0 3rem;
    }
    .waterfall-card {
      background: #1A2040;
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 1.5rem;
      break-inside: avoid;
      border: 1px solid rgba(0,229,255,0.1);
      transition: var(--transition-fast);
    }
    .waterfall-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 8px 22px rgba(0,229,255,0.2);
    }
    .waterfall-card img {
      width: 100%;
      display: block;
      transition: transform 0.3s ease;
    }
    .waterfall-card:hover img {
      transform: scale(1.02);
    }
    .waterfall-content {
      padding: 1.2rem;
    }

    /* 对比表 */
    .compare-panel {
      display: flex;
      gap: 2rem;
      background: #111832;
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid var(--border-card);
    }
    .compare-left, .compare-right {
      flex: 1;
    }
    .compare-right {
      border: 2px solid var(--accent-red);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      background: rgba(255,70,85,0.05);
    }
    .compare-item {
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 1rem 0;
    }

    /* FAQ */
    .accordion-faq .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-sm);
      margin-bottom: 0.8rem;
    }
    .accordion-title {
      background: transparent;
      color: var(--accent-red);
      font-weight: 600;
      padding: 1rem 1.5rem;
      cursor: pointer;
      font-size: 1.1rem;
    }

    /* 联系CTA */
    .contact-cta {
      background: #0A0E27;
      border: 2px solid var(--neon-cyan);
      border-radius: var(--radius-lg);
      padding: 3rem;
    }

    footer {
      background: #0A0E27;
      border-top: 1px solid rgba(0,229,255,0.15);
    }

    @media (max-width: 1024px) {
      .hero { flex-direction: column; }
      .hero-left h1 { font-size: 2.5rem; }
    }
    @media (max-width: 640px) {
      .features-grid { grid-template-columns: 1fr; }
      .compare-panel { flex-direction: column; }
      .nav-links { display: none; }
      .menu-icon { display: block; }
    }