/* roulang page: index */
@tailwind base;
    @tailwind components;
    @tailwind utilities;

    :root {
      --primary-purple: #7B2FFF;
      --accent-orange: #FF6B35;
      --bg-deep: #0A0A0F;
      --bg-card: rgba(20, 18, 30, 0.85);
      --border-glow: rgba(123, 47, 255, 0.3);
      --text-body: #B0B0C0;
      --text-strong: #FFFFFF;
      --shadow-purple: 0 8px 32px rgba(123, 47, 255, 0.15);
      --radius-card: 12px;
      --radius-btn: 50px;
    }

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

    body {
      font-family: 'Noto Sans SC', sans-serif;
      background-color: var(--bg-deep);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .font-raj {
      font-family: 'Rajdhani', sans-serif;
    }

    .container-custom {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航栏 */
    .nav-pc {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: transparent;
      backdrop-filter: blur(0px);
      transition: background 0.3s ease, backdrop-filter 0.3s ease;
      z-index: 50;
      display: flex;
      align-items: center;
    }
    .nav-pc.scrolled {
      background: rgba(10, 10, 15, 0.9);
      backdrop-filter: blur(12px);
      box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .logo-text {
      font-weight: 700;
      font-size: 24px;
      letter-spacing: 2px;
      background: linear-gradient(135deg, #fff, #d1c4ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .nav-links {
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .nav-link {
      padding: 8px 20px;
      border-radius: 50px;
      font-weight: 500;
      font-size: 15px;
      color: #ddd;
      transition: all 0.25s;
      text-decoration: none;
    }
    .nav-link:hover {
      background: rgba(123,47,255,0.2);
      color: white;
    }
    .nav-link.active {
      background: var(--primary-purple);
      color: white;
      box-shadow: 0 0 12px rgba(123,47,255,0.6);
    }
    .btn-cta-nav {
      background: var(--accent-orange);
      color: white;
      padding: 10px 24px;
      border-radius: 50px;
      font-weight: 600;
      transition: all 0.3s;
      box-shadow: 0 0 16px rgba(255,107,53,0.5);
      margin-left: 12px;
      text-decoration: none;
    }
    .btn-cta-nav:hover {
      box-shadow: 0 0 28px rgba(255,107,53,0.8);
      transform: scale(1.04);
    }

    /* 移动端底部导航 */
    .mobile-nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(10,10,15,0.95);
      backdrop-filter: blur(20px);
      display: none;
      align-items: center;
      justify-content: space-around;
      z-index: 50;
      border-top: 1px solid rgba(123,47,255,0.2);
    }
    .mobile-nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      color: #aaa;
      font-size: 11px;
      text-decoration: none;
      transition: 0.2s;
      font-weight: 500;
    }
    .mobile-nav-item i {
      font-size: 20px;
      margin-bottom: 2px;
    }
    .mobile-nav-item.active {
      color: var(--primary-purple);
      text-shadow: 0 0 8px var(--primary-purple);
    }
    .mobile-cta {
      width: 56px;
      height: 56px;
      background: linear-gradient(135deg, #7B2FFF, #FF6B35);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 24px;
      margin-top: -18px;
      box-shadow: 0 0 24px rgba(123,47,255,0.7);
      border: 2px solid rgba(255,255,255,0.2);
      transition: 0.3s;
      text-decoration: none;
    }

    /* 卡片与组件 */
    .card-glow {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-purple);
      transition: all 0.3s ease;
    }
    .card-glow:hover {
      border-color: rgba(123,47,255,0.8);
      box-shadow: 0 12px 40px rgba(123,47,255,0.3);
      transform: translateY(-4px);
    }
    .btn-primary {
      background: var(--accent-orange);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      display: inline-block;
      transition: 0.3s;
      box-shadow: 0 0 18px rgba(255,107,53,0.5);
      border: none;
      cursor: pointer;
      text-decoration: none;
    }
    .btn-primary:hover {
      box-shadow: 0 0 30px rgba(255,107,53,0.8);
      transform: scale(1.03);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary-purple);
      color: var(--primary-purple);
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-weight: 500;
      transition: 0.3s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline:hover {
      background: var(--primary-purple);
      color: white;
    }
    .section-padding {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      .section-padding {
        padding: 70px 0;
      }
      .nav-pc {
        display: none;
      }
      .mobile-nav {
        display: flex;
      }
      body {
        padding-bottom: 80px;
      }
    }
    @media (min-width: 769px) {
      .mobile-nav {
        display: none;
      }
    }

    /* 动态粒子背景 */
    .hero-bg {
      background: radial-gradient(circle at 30% 40%, #1a1030 0%, #0A0A0F 90%);
      position: relative;
      overflow: hidden;
    }
    .particle {
      position: absolute;
      width: 2px;
      height: 2px;
      background: var(--primary-purple);
      border-radius: 50%;
      animation: floatUp 7s infinite;
      opacity: 0.5;
    }
    @keyframes floatUp {
      0% { transform: translateY(100vh) scale(0); opacity: 0; }
      50% { opacity: 0.7; }
      100% { transform: translateY(-10vh) scale(1.2); opacity: 0; }
    }

    .data-giant {
      font-size: 72px;
      font-weight: 700;
      text-shadow: 0 0 18px var(--primary-purple);
    }
    @media (max-width: 768px) {
      .data-giant {
        font-size: 48px;
      }
    }
    .vs-badge {
      background: linear-gradient(135deg, #7B2FFF, #FF6B35);
      border-radius: 50%;
      width: 80px;
      height: 80px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 28px;
      color: white;
      box-shadow: 0 0 30px rgba(123,47,255,0.6);
      animation: pulse-glow 2s infinite;
    }
    @keyframes pulse-glow {
      0% { box-shadow: 0 0 20px rgba(123,47,255,0.5); }
      50% { box-shadow: 0 0 45px rgba(255,107,53,0.8); }
      100% { box-shadow: 0 0 20px rgba(123,47,255,0.5); }
    }