/* roulang page: index */
:root {
      --primary-bg: #0A0E27;
      --neon-cyan: #00F0FF;
      --esports-red: #FF4655;
      --esports-gold: #FFD700;
      --card-bg: rgba(255, 255, 255, 0.03);
      --glass-bg: rgba(10, 14, 39, 0.8);
      --data-panel-bg: rgba(0, 240, 255, 0.05);
      --text-primary: #FFFFFF;
      --text-secondary: rgba(255, 255, 255, 0.7);
      --text-muted: rgba(255, 255, 255, 0.5);
      --border-subtle: rgba(255, 255, 255, 0.06);
      --border-neon: 1px solid var(--neon-cyan);
      --radius-card: 12px;
      --radius-btn: 6px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", sans-serif;
      --font-mono: "DIN Alternate", "Roboto Mono", "SF Mono", monospace;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      background-color: var(--primary-bg);
      color: var(--text-primary);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    /* 导航系统 */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(10, 14, 39, 0.85);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.15);
      transition: background 0.3s ease;
    }
    
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    
    .logo {
      font-size: 1.6rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--text-primary);
      text-decoration: none;
      white-space: nowrap;
    }
    .logo span {
      color: var(--neon-cyan);
    }
    
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s;
      font-size: 0.95rem;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--neon-cyan);
    }
    
    .btn-primary {
      background: var(--neon-cyan);
      color: var(--primary-bg);
      border: none;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.9rem;
      cursor: pointer;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
    }
    .btn-primary:hover {
      background: #33F5FF;
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
      color: var(--primary-bg);
    }
    
    .btn-outline {
      background: transparent;
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all 0.2s;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
    }
    .btn-outline:hover {
      background: rgba(0, 240, 255, 0.1);
    }
    
    .hamburger {
      display: none;
      background: none;
      border: none;
      color: white;
      font-size: 1.8rem;
      cursor: pointer;
    }
    
    .mobile-menu {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(10, 14, 39, 0.98);
      backdrop-filter: blur(30px);
      display: none;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 40px;
      z-index: 999;
    }
    .mobile-menu.active {
      display: flex;
    }
    .mobile-menu a {
      color: white;
      font-size: 1.8rem;
      font-weight: 600;
      text-decoration: none;
    }
    .close-menu {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 2rem;
      background: none;
      border: none;
      color: white;
    }
    
    /* 区块通用 */
    section {
      padding: 80px 0;
    }
    
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-primary);
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      display: block;
      width: 40px;
      height: 3px;
      background: var(--neon-cyan);
      margin-top: 12px;
    }
    
    /* Hero 首屏 */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding-top: 80px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
    }
    #hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(10,14,39,0.92) 0%, rgba(10,14,39,0.7) 70%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-left h1 {
      font-size: 3rem;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 24px;
      color: white;
    }
    .hero-left .subtitle {
      font-size: 1.25rem;
      color: var(--text-secondary);
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-right {
      position: relative;
      display: flex;
      justify-content: center;
    }
    .floating-cards {
      position: relative;
      width: 100%;
      height: 380px;
      background: rgba(0,0,0,0.25);
      backdrop-filter: blur(4px);
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .data-card-float {
      position: absolute;
      background: rgba(10,14,39,0.85);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(0,240,255,0.3);
      border-radius: 8px;
      padding: 12px 16px;
      color: white;
      font-family: var(--font-mono);
      font-size: 0.9rem;
    }
    .card-kill { top: 20px; left: 20px; }
    .card-gold { bottom: 30px; right: 20px; }
    .card-tower { top: 140px; right: 30px; }
    
    /* 非对称优势 */
    #features .grid-asym {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .feature-main {
      background: var(--card-bg);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      padding: 32px;
      transition: all 0.3s;
    }
    .feature-main:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 25px rgba(0,240,255,0.15);
    }
    .feature-side {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .feature-card {
      background: var(--card-bg);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      padding: 24px;
      transition: 0.3s;
    }
    .feature-card:hover {
      border-color: var(--neon-cyan);
    }
    
    /* 实时演示面板 */
    .live-panel {
      background: rgba(0,0,0,0.4);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(0,240,255,0.2);
      border-radius: 16px;
      padding: 32px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .team-score {
      font-family: var(--font-mono);
      font-size: 3rem;
      color: var(--esports-gold);
    }
    
    /* 解决方案卡片 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .solution-card {
      background: var(--card-bg);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      padding: 28px;
      transition: 0.3s;
    }
    .solution-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    }
    
    /* 数据案例数字 */
    .stats-row {
      display: flex;
      justify-content: center;
      gap: 80px;
      flex-wrap: wrap;
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 3.5rem;
      font-weight: 300;
      color: var(--neon-cyan);
    }
    
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding: 24px 0;
    }
    .faq-question {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--neon-cyan);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    
    /* 页脚 */
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }
    
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .hero-right { height: 320px; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      #features .grid-asym { grid-template-columns: 1fr; }
      .solutions-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .live-panel { grid-template-columns: 1fr; }
      .stats-row { gap: 40px; }
    }