/* roulang page: index */
* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --deep-purple: #1E0A3C;
      --electric-purple: #6C3CF0;
      --nebula-blue: #3A1C8C;
      --gold: #F5B642;
      --white: #ffffff;
      --light-gray: #E0E0E0;
      --dark-bg: #0F0520;
      --card-bg: rgba(30, 10, 60, 0.7);
      --glass-bg: rgba(255, 255, 255, 0.03);
      --border-light: rgba(108, 60, 240, 0.4);
      --text-soft: #B0A0C0;
      --radius-card: 20px;
      --radius-btn: 50px;
      --shadow-glow: 0 0 30px rgba(108, 60, 240, 0.5);
      --transition: all 0.25s ease;
    }
    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', 'Space Grotesk', sans-serif;
      background: linear-gradient(135deg, #1E0A3C 0%, #3A1C8C 100%);
      color: var(--white);
      line-height: 1.8;
      font-size: 16px;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    button, .btn {
      cursor: pointer;
      border: none;
      background: transparent;
      font-family: inherit;
      transition: var(--transition);
    }
    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(30, 10, 60, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--electric-purple);
      box-shadow: 0 10px 25px -8px rgba(0,0,0,0.3);
      padding: 0 24px;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 1280px;
      margin: 0 auto;
      height: 72px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.75rem;
      font-weight: 700;
      letter-spacing: 1px;
      background: linear-gradient(to right, #fff, #d9b3ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      background: radial-gradient(circle, var(--electric-purple), var(--nebula-blue));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: white;
      box-shadow: 0 0 12px var(--electric-purple);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--light-gray);
      font-size: 1rem;
      position: relative;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--gold);
      transition: width 0.3s;
    }
    .nav-links a:hover {
      color: var(--gold);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .btn-capsule {
      background: linear-gradient(135deg, var(--electric-purple), var(--nebula-blue));
      color: white;
      padding: 12px 28px;
      border-radius: 50px;
      font-weight: 600;
      box-shadow: 0 8px 18px rgba(108,60,240,0.4);
      transition: 0.3s;
      border: none;
    }
    .btn-capsule:hover {
      background: linear-gradient(135deg, var(--nebula-blue), var(--electric-purple));
      box-shadow: 0 10px 24px rgba(108,60,240,0.7);
      transform: translateY(-2px);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 6px;
      background: transparent;
      border: none;
      cursor: pointer;
    }
    .hamburger span {
      width: 28px;
      height: 3px;
      background: var(--gold);
      border-radius: 4px;
      transition: 0.3s;
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      width: 100%;
      background: rgba(10, 2, 26, 0.96);
      backdrop-filter: blur(18px);
      flex-direction: column;
      padding: 30px 24px;
      gap: 24px;
      z-index: 999;
    }
    .mobile-menu a {
      font-size: 20px;
      font-weight: 600;
      color: white;
      border-bottom: 1px solid rgba(108,60,240,0.3);
      padding-bottom: 12px;
    }
    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
      padding-top: 80px;
    }
    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 30% 40%, rgba(108,60,240,0.3), transparent 70%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .hero-text {
      flex: 1 1 500px;
    }
    .hero h1 {
      font-size: 3.5rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      text-shadow: 0 0 20px var(--electric-purple);
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero p {
      font-size: 1.2rem;
      color: #ccc;
      margin-bottom: 32px;
    }
    .btn-group {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .btn-outline-gold {
      border: 2px solid var(--gold);
      color: var(--gold);
      padding: 12px 32px;
      border-radius: 50px;
      font-weight: 600;
      background: transparent;
    }
    .btn-outline-gold:hover {
      background: var(--gold);
      color: var(--deep-purple);
    }
    .hero-image {
      flex: 1 1 400px;
      display: flex;
      justify-content: center;
    }
    .hero-image img {
      max-width: 480px;
      filter: drop-shadow(0 0 30px var(--electric-purple));
      animation: float 4s ease-in-out infinite;
    }
    @keyframes float {
      0% { transform: translateY(0px); }
      50% { transform: translateY(-15px); }
      100% { transform: translateY(0px); }
    }
    section {
      padding: 90px 0;
    }
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      text-align: center;
      margin-bottom: 48px;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 32px;
    }
    .card {
      background: var(--card-bg);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      backdrop-filter: blur(8px);
      transition: 0.3s;
    }
    .card:hover {
      border-color: var(--gold);
      box-shadow: var(--shadow-glow);
      transform: translateY(-6px);
    }
    .pain-card {
      background: rgba(20, 5, 45, 0.7);
      border: none;
    }
    .data-badge {
      background: var(--deep-purple);
      box-shadow: inset 0 0 14px var(--electric-purple);
      border-radius: 14px;
      padding: 10px 18px;
      display: inline-block;
      margin-bottom: 16px;
    }
    .data-badge .number {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--gold);
    }
    .testimonial-grid {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 12px;
      scrollbar-width: thin;
    }
    .testimonial-card {
      background: white;
      color: #1E0A3C;
      border-radius: 24px;
      padding: 28px;
      min-width: 300px;
      flex: 0 0 auto;
    }
    .faq-item {
      background: rgba(108,60,240,0.1);
      border-radius: 14px;
      margin-bottom: 16px;
      padding: 16px 24px;
    }
    .faq-question {
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: 0.3s;
      color: #ddd;
      margin-top: 8px;
    }
    .cta-section {
      background: linear-gradient(135deg, var(--electric-purple), var(--nebula-blue));
      text-align: center;
      border-radius: 40px;
      margin: 0 24px;
      padding: 70px 24px;
    }
    footer {
      background: #0a0218;
      padding: 60px 0 30px;
      color: var(--text-soft);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 30px;
    }
    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
    }
    @media (max-width: 768px) {
      .hero h1 { font-size: 2.4rem; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      .footer-grid { grid-template-columns: 1fr; }
    }