/* roulang page: index */
:root {
      --deep-purple: #1A0A2E;
      --electric-purple: #7B2FBE;
      --neon-cyan: #00F0FF;
      --amber-gold: #FFB800;
      --dark-bg: #0F172A;
      --glass-bg: rgba(255, 255, 255, 0.03);
      --white: #FFFFFF;
      --gray-light: #CBD5E1;
      --gray-mid: #64748B;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-tag: 6px;
      --shadow-card: 0 4px 24px rgba(0, 240, 255, 0.08);
      --shadow-hover: 0 8px 40px rgba(0, 240, 255, 0.2);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-mono: "JetBrains Mono", "Fira Code", "Courier New", monospace;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background: var(--deep-purple);
      background-image: radial-gradient(circle at 15% 20%, rgba(0,240,255,0.08) 0%, transparent 45%),
                        radial-gradient(circle at 85% 70%, rgba(123,47,190,0.12) 0%, transparent 50%);
      color: var(--gray-light);
      line-height: 1.6;
      font-size: 16px;
      min-height: 100vh;
      overflow-x: hidden;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }
    @media (max-width: 640px) {
      .container {
        padding: 0 16px;
      }
    }
    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(26, 10, 46, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.2);
      z-index: 1000;
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }
    .navbar.scrolled {
      background: rgba(26, 10, 46, 0.96);
      box-shadow: 0 4px 20px rgba(0, 240, 255, 0.15);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--white);
      text-decoration: none;
      letter-spacing: -0.5px;
    }
    .logo i {
      color: var(--neon-cyan);
      font-size: 2rem;
    }
    .nav-links {
      display: flex;
      gap: 36px;
      align-items: center;
    }
    .nav-links a {
      color: var(--gray-light);
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s;
      font-size: 1rem;
    }
    .nav-links a:hover {
      color: var(--neon-cyan);
    }
    .nav-cta {
      background: var(--neon-cyan);
      color: var(--deep-purple) !important;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      transition: all 0.25s;
      box-shadow: 0 0 12px rgba(0,240,255,0.4);
    }
    .nav-cta:hover {
      background: #33F5FF;
      box-shadow: 0 0 20px rgba(0,240,255,0.7);
      transform: scale(1.03);
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: var(--white);
      background: none;
      border: none;
      cursor: pointer;
    }
    @media (max-width: 1024px) {
      .nav-links {
        display: none;
      }
      .hamburger {
        display: block;
      }
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      width: 100%;
      background: var(--deep-purple);
      backdrop-filter: blur(20px);
      flex-direction: column;
      padding: 24px 32px;
      gap: 20px;
      border-bottom: 1px solid var(--electric-purple);
      z-index: 999;
    }
    .mobile-menu.active {
      display: flex;
    }
    .mobile-menu a {
      color: var(--white);
      font-size: 1.2rem;
      font-weight: 600;
      text-decoration: none;
    }
    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      background-color: rgba(26, 10, 46, 0.7);
      text-align: center;
      padding: 120px 24px 80px;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 30% 40%, rgba(0,240,255,0.2) 0%, transparent 50%);
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
    }
    .hero h1 {
      font-size: clamp(2.5rem, 5vw, 4.5rem);
      font-weight: 900;
      letter-spacing: -0.02em;
      background: linear-gradient(135deg, var(--neon-cyan), #fff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 20px;
      text-shadow: 0 0 25px rgba(0,240,255,0.5);
    }
    .hero-sub {
      font-size: 1.2rem;
      color: var(--gray-light);
      margin-bottom: 36px;
    }
    .hero-buttons {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--neon-cyan);
      color: var(--deep-purple);
      font-weight: 700;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      text-decoration: none;
      transition: 0.25s;
      box-shadow: 0 0 18px rgba(0,240,255,0.5);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: #33F5FF;
      box-shadow: 0 0 28px rgba(0,240,255,0.8);
      transform: scale(1.04);
    }
    .btn-outline {
      border: 2px solid var(--neon-cyan);
      color: var(--neon-cyan);
      background: transparent;
      font-weight: 600;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      text-decoration: none;
      transition: 0.25s;
    }
    .btn-outline:hover {
      background: rgba(0,240,255,0.1);
      border-color: #fff;
    }
    .live-ticker {
      margin-top: 50px;
      background: rgba(0,0,0,0.5);
      backdrop-filter: blur(8px);
      padding: 12px 24px;
      border-radius: 40px;
      display: inline-flex;
      gap: 40px;
      flex-wrap: wrap;
      justify-content: center;
      color: var(--neon-cyan);
      font-family: var(--font-mono);
      font-size: 0.95rem;
    }
    /* 数据看板 */
    .data-board {
      padding: 80px 0;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .stat-card {
      background: rgba(255,255,255,0.03);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(123,47,190,0.3);
      border-radius: var(--radius-card);
      padding: 28px 20px;
      text-align: center;
      transition: all 0.3s;
    }
    .stat-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-hover);
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 2.5rem;
      color: var(--neon-cyan);
      font-weight: 700;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 40px;
      text-align: center;
    }
    /* 服务矩阵 */
    .services {
      padding: 80px 0;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: rgba(26,10,46,0.7);
      border: 1px solid rgba(123,47,190,0.25);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: 0.3s;
    }
    .service-card:hover {
      transform: translateY(-8px);
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-hover);
    }
    .service-icon {
      font-size: 2.5rem;
      color: var(--neon-cyan);
      margin-bottom: 18px;
    }
    /* 优势对比 */
    .advantages {
      padding: 80px 0;
      display: flex;
      gap: 40px;
      align-items: center;
      flex-wrap: wrap;
    }
    .adv-left, .adv-right {
      flex: 1;
    }
    .check-list li {
      list-style: none;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    /* 赛事卡片 */
    .events {
      padding: 80px 0;
    }
    .event-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 10px;
    }
    .event-card {
      min-width: 260px;
      background: rgba(255,255,255,0.04);
      border-radius: var(--radius-card);
      padding: 20px;
      border: 1px solid var(--electric-purple);
    }
    /* FAQ */
    .faq {
      padding: 80px 0;
    }
    .faq-item {
      border-left: 4px solid var(--electric-purple);
      padding: 12px 20px;
      margin-bottom: 16px;
      background: rgba(0,0,0,0.2);
      border-radius: 0 8px 8px 0;
      cursor: pointer;
    }
    .faq-question {
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      color: var(--white);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--gray-light);
    }
    /* CTA */
    .cta-block {
      padding: 80px 0;
      text-align: center;
      background: rgba(0,240,255,0.03);
      border: 1px solid var(--neon-cyan);
      border-radius: 24px;
      margin: 60px 0;
    }
    /* 页脚 */
    .footer {
      background: #120720;
      padding: 60px 0 20px;
      border-top: 2px solid var(--neon-cyan);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 30px;
    }
    @media (max-width: 1024px) {
      .grid-4, .grid-3 { grid-template-columns: repeat(2,1fr); }
      .footer-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 640px) {
      .grid-4, .grid-3, .footer-grid { grid-template-columns: 1fr; }
      .advantages { flex-direction: column; }
    }