/* roulang page: index */
:root {
      --primary: #00FF87;
      --secondary-bg: #0A0E17;
      --accent: #FF4D6D;
      --surface: #141B26;
      --surface-light: #1C2536;
      --text-primary: #E8ECF1;
      --text-secondary: #8A929F;
      --border-light: rgba(255,255,255,0.08);
      --neon-glow: 0 0 15px rgba(0,255,135,0.25);
      --radius-md: 12px;
      --radius-lg: 20px;
      --container-max: 1280px;
      --space-section: 100px;
      --font-heading: 'Inter', 'Noto Sans SC', sans-serif;
      --font-mono: 'JetBrains Mono', monospace;
    }

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

    body {
      background-color: var(--secondary-bg);
      color: var(--text-primary);
      font-family: 'Noto Sans SC', sans-serif;
      line-height: 1.7;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 40px;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    button, .btn {
      cursor: pointer;
      font-family: inherit;
      border: none;
      background: transparent;
    }

    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 40px);
      max-width: 1100px;
      z-index: 1000;
      background: rgba(20, 27, 38, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-light);
      border-radius: 60px;
      padding: 0 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.3s ease;
      height: 64px;
    }

    .navbar.scrolled {
      background: rgba(10, 14, 23, 0.9);
      box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    }

    .logo {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.6rem;
      color: var(--text-primary);
      letter-spacing: -0.02em;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo i {
      color: var(--primary);
      font-size: 1.8rem;
    }

    .nav-links {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .nav-links a {
      padding: 8px 18px;
      border-radius: 30px;
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text-secondary);
      transition: all 0.2s;
    }

    .nav-links a.active, .nav-links a:hover {
      color: var(--primary);
      background: rgba(0,255,135,0.08);
    }

    .nav-cta {
      background: var(--primary);
      color: #0A0E17 !important;
      font-weight: 700;
      padding: 10px 24px !important;
      border-radius: 40px;
      box-shadow: var(--neon-glow);
    }
    .nav-cta:hover {
      background: #00e677;
      box-shadow: 0 0 25px rgba(0,255,135,0.5);
    }

    .menu-toggle {
      display: none;
      font-size: 1.8rem;
      color: var(--text-primary);
      background: transparent;
      border: none;
    }

    @media (max-width: 768px) {
      .navbar {
        top: 12px;
        width: calc(100% - 24px);
        padding: 0 20px;
      }
      .nav-links {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(10,14,23,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 28px;
        display: flex;
        z-index: 999;
        transform: translateX(100%);
        transition: transform 0.3s ease;
      }
      .mobile-menu.active {
        transform: translateX(0);
      }
      .mobile-menu a {
        font-size: 1.6rem;
        font-weight: 600;
      }
    }

    /* 区块通用 */
    section {
      padding: var(--space-section) 0;
    }

    h2 {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 2.5rem;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      color: var(--text-primary);
    }

    .section-subtitle {
      color: var(--text-secondary);
      font-size: 1.1rem;
      margin-bottom: 48px;
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding-top: 80px;
      background: radial-gradient(circle at 20% 40%, rgba(0,255,135,0.06) 0%, transparent 50%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .hero-left h1 {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 3.6rem;
      line-height: 1.2;
      margin-bottom: 24px;
    }
    .typewriter {
      color: var(--primary);
      font-weight: 600;
      font-size: 1.5rem;
      margin-bottom: 32px;
      min-height: 40px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #0A0E17;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: 40px;
      transition: 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-outline {
      border: 1px solid var(--border-light);
      color: var(--text-primary);
      padding: 14px 32px;
      border-radius: 40px;
      font-weight: 600;
      transition: 0.2s;
    }
    .btn-primary:hover { box-shadow: 0 0 20px var(--primary); }
    .btn-outline:hover { border-color: var(--primary); color: var(--primary); }

    .hero-right {
      position: relative;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 24px;
      height: 420px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    }
    .live-badge {
      background: rgba(20,27,38,0.8);
      backdrop-filter: blur(12px);
      border-radius: 20px;
      padding: 16px 28px;
      display: flex;
      gap: 20px;
      align-items: center;
      border: 1px solid var(--border-light);
    }
    .live-dot {
      width: 12px;
      height: 12px;
      background: var(--accent);
      border-radius: 50%;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(255,77,109,0.7); } 70% { box-shadow: 0 0 0 10px rgba(255,77,109,0); } 100% { box-shadow: 0 0 0 0 rgba(255,77,109,0); } }

    /* Live Pulse 横向滚动 */
    .pulse-track {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      padding: 10px 0 20px;
      scrollbar-width: thin;
      scrollbar-color: var(--primary) var(--surface);
    }
    .pulse-card {
      min-width: 220px;
      background: var(--surface);
      border-radius: 16px;
      padding: 20px;
      border: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
      transition: 0.2s;
    }
    .pulse-card:hover { border-color: var(--primary); transform: translateY(-4px); }
    .score {
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 700;
      color: var(--primary);
    }

    /* 1+2 网格 */
    .services-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .service-large {
      background: url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      border-radius: 24px;
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      min-height: 360px;
      position: relative;
      overflow: hidden;
    }
    .service-large::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(10,14,23,0.9), transparent);
    }
    .service-large-content { position: relative; z-index: 2; }
    .service-small {
      background: var(--surface);
      border-radius: 20px;
      padding: 28px;
      border: 1px solid var(--border-light);
    }
    @media (max-width: 768px) {
      .services-grid { grid-template-columns: 1fr; }
      .hero-grid { grid-template-columns: 1fr; }
      h1 { font-size: 2.4rem; }
    }

    /* Stats */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      text-align: center;
      gap: 30px;
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 3.2rem;
      font-weight: 700;
      color: var(--primary);
    }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 200px 1fr;
      gap: 40px;
    }
    .accordion-item {
      border-bottom: 1px solid var(--border-light);
      padding: 16px 0;
      cursor: pointer;
    }
    .accordion-title {
      display: flex;
      justify-content: space-between;
      font-weight: 600;
    }

    /* Footer */
    .footer {
      background: var(--surface);
      padding: 60px 0 30px;
      border-top: 1px solid var(--primary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }

    @media (max-width: 768px) {
      .faq-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }