/* roulang page: index */
@import url('/assets/css/vendor/0b67347532-css2.css');
    
    :root {
      --primary: #E53935;
      --primary-hover: #FF5252;
      --secondary: #1B1B2F;
      --accent: #FFB300;
      --accent-gradient: linear-gradient(135deg, #FFB300 0%, #FF8F00 100%);
      --bg-dark: #0F0F1A;
      --bg-card: #1A1A2E;
      --bg-card-hover: #22223A;
      --text-white: #FFFFFF;
      --text-gray: #B0B0C0;
      --text-light: #E0E0E0;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-glow: rgba(229, 57, 53, 0.3);
      --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.6);
      --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.8);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-tag: 8px;
    }

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

    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      background-color: var(--bg-dark);
      color: var(--text-gray);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(15, 15, 26, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(229, 57, 53, 0.15);
      transition: background 0.3s ease;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo {
      font-size: 1.8rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-white);
      text-decoration: none;
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .logo span {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .logo small {
      font-size: 0.7rem;
      font-weight: 400;
      color: var(--text-gray);
      letter-spacing: 0.5px;
      margin-left: 4px;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      color: var(--text-gray);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s;
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-download-btn {
      background: var(--accent-gradient);
      border: none;
      color: #1B1B2F;
      font-weight: 700;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      cursor: pointer;
      font-size: 0.9rem;
      transition: all 0.2s;
      display: flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }
    .nav-download-btn:hover {
      transform: scale(1.03);
      box-shadow: 0 6px 18px rgba(255, 179, 0, 0.4);
    }
    .hamburger {
      display: none;
      font-size: 1.6rem;
      color: var(--text-white);
      background: none;
      border: none;
      cursor: pointer;
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(10, 10, 20, 0.98);
      backdrop-filter: blur(20px);
      flex-direction: column;
      padding: 40px 24px;
      gap: 32px;
      z-index: 999;
    }
    .mobile-menu.active {
      display: flex;
    }
    .mobile-menu a {
      font-size: 1.3rem;
      font-weight: 600;
      color: var(--text-white);
      text-decoration: none;
    }

    /* 按钮 */
    .btn-primary {
      background: var(--primary);
      color: white;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      border: none;
      cursor: pointer;
      transition: all 0.25s;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 1rem;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 8px 22px rgba(229, 57, 53, 0.5);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.25);
      color: white;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-outline:hover {
      background: rgba(255,255,255,0.06);
      border-color: rgba(255,255,255,0.5);
    }
    .btn-cta {
      background: var(--accent-gradient);
      color: #1B1B2F;
      font-weight: 800;
      padding: 18px 42px;
      border-radius: 60px;
      font-size: 1.2rem;
      border: none;
      cursor: pointer;
      box-shadow: 0 10px 28px rgba(255,179,0,0.45);
      transition: 0.3s;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-cta:hover {
      transform: scale(1.04);
      box-shadow: 0 16px 36px rgba(255,179,0,0.65);
    }

    /* 卡片 */
    .card {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      padding: 28px;
      border: 1px solid var(--border-subtle);
      transition: all 0.3s ease;
      box-shadow: var(--shadow-card);
    }
    .card:hover {
      transform: translateY(-6px);
      background: var(--bg-card-hover);
      border-color: rgba(229, 57, 53, 0.2);
      box-shadow: var(--shadow-hover);
    }

    /* Hero */
    .hero-section {
      padding: 140px 0 100px;
      background: radial-gradient(circle at 30% 40%, rgba(229,57,53,0.15) 0%, transparent 45%);
    }
    .stat-number {
      font-family: 'Inter', sans-serif;
      font-weight: 800;
      font-feature-settings: "tnum";
      color: var(--accent);
      text-shadow: 0 0 12px rgba(255,179,0,0.5);
    }
    .footer-link {
      color: var(--text-gray);
      text-decoration: none;
      transition: color 0.2s;
    }
    .footer-link:hover {
      color: var(--primary);
    }
    .accordion-item {
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .accordion-btn {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      color: white;
      font-weight: 600;
      font-size: 1.1rem;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: var(--text-gray);
    }

    @media (max-width: 1024px) {
      .nav-links { gap: 18px; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero-section { padding: 120px 0 60px; }
      h1 { font-size: 2.2rem !important; }
    }