/* roulang page: index */
:root {
      --deep-blue: #0C162C;
      --deep-card: #0a1224;
      --luxury-gold: #C8A456;
      --warm-copper: #B8914B;
      --champagne: #F5ECD7;
      --text-light: #e4e9f1;
      --text-muted: #b0c0d0;
      --glass-bg: rgba(14, 22, 40, 0.65);
      --glass-border: rgba(200, 164, 86, 0.25);
      --glass-hover-border: rgba(200, 164, 86, 0.55);
      --shadow-gold: 0 8px 32px rgba(0,0,0,0.5), 0 0 18px rgba(200, 164, 86, 0.35);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-btn: 30px;
      --transition-smooth: all 0.3s ease;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", "Segoe UI", sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--deep-blue);
      color: var(--text-light);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      background-image: radial-gradient(circle at 30% 10%, rgba(200, 164, 86, 0.08) 0%, transparent 45%);
    }

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

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

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }

    button, .btn {
      cursor: pointer;
      font-family: inherit;
    }

    /* 导航 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(8, 15, 30, 0.8);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(200, 164, 86, 0.2);
      box-shadow: 0 4px 20px rgba(0,0,0,0.4);
      z-index: 50;
      display: flex;
      align-items: center;
    }

    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .logo {
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: 2px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo .gold-lion {
      font-size: 2rem;
      color: var(--luxury-gold);
      filter: drop-shadow(0 0 6px rgba(200,164,86,0.6));
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
    }

    .nav-menu a {
      font-size: 0.95rem;
      font-weight: 500;
      color: #ccd6e0;
      padding: 0.5rem 0;
      position: relative;
      letter-spacing: 0.5px;
      transition: color 0.25s;
    }

    .nav-menu a::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--luxury-gold), var(--warm-copper));
      transition: width 0.3s ease;
    }

    .nav-menu a:hover,
    .nav-menu a.active {
      color: var(--luxury-gold);
    }
    .nav-menu a:hover::after,
    .nav-menu a.active::after {
      width: 100%;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border: none;
      cursor: pointer;
    }
    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--luxury-gold);
      transition: 0.3s;
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(8, 15, 28, 0.95);
        backdrop-filter: blur(20px);
        padding: 28px 24px;
        gap: 1.8rem;
        border-bottom: 1px solid rgba(200,164,86,0.3);
      }
      .nav-menu.active-mobile {
        display: flex;
      }
      .hamburger {
        display: flex;
      }
    }

    /* 板块通用 */
    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 70px 0;
      }
    }

    h2 {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      letter-spacing: -0.02em;
      position: relative;
      display: inline-block;
      color: #fff;
    }
    h2::after {
      content: "";
      position: absolute;
      bottom: -10px;
      left: 0;
      width: 60px;
      height: 3px;
      background: var(--luxury-gold);
    }

    .text-gold {
      color: var(--luxury-gold);
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding-top: 72px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(12,22,44,0.85) 30%, rgba(12,22,44,0.4) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .hero-left h1 {
      font-size: 3.5rem;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 1.5rem;
      color: #fff;
    }
    .hero-left .first-gold {
      font-size: 4.2rem;
      color: var(--luxury-gold);
      font-weight: 800;
      margin-right: 6px;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: #ccd6e0;
      max-width: 480px;
      margin-bottom: 2rem;
    }
    .btn-group {
      display: flex;
      gap: 1.2rem;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #C8A456 0%, #B8914B 100%);
      color: #0C162C;
      font-weight: 700;
      padding: 0.9rem 2.2rem;
      border-radius: 30px;
      border: none;
      box-shadow: 0 0 18px rgba(200,164,86,0.7);
      transition: 0.3s;
      letter-spacing: 0.5px;
    }
    .btn-primary:hover {
      box-shadow: 0 0 28px rgba(200,164,86,0.9);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--luxury-gold);
      color: var(--luxury-gold);
      padding: 0.9rem 2.2rem;
      border-radius: 30px;
      font-weight: 600;
      backdrop-filter: blur(4px);
    }
    .btn-outline:hover {
      background: rgba(200,164,86,0.15);
    }

    @media (max-width: 768px) {
      .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
      }
      .hero-left h1 {
        font-size: 2.5rem;
      }
    }

    /* 卡片玻璃 */
    .glass-card {
      background: rgba(14, 22, 40, 0.6);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(200,164,86,0.25);
      border-radius: var(--radius-md);
      box-shadow: 0 8px 24px rgba(0,0,0,0.5);
      transition: 0.3s;
    }
    .glass-card:hover {
      border-color: var(--glass-hover-border);
      box-shadow: 0 12px 30px rgba(200,164,86,0.2);
    }

    /* 权益网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      margin-top: 3rem;
    }
    .feature-card {
      padding: 28px;
      display: flex;
      flex-direction: column;
      border-left: 3px solid var(--luxury-gold);
    }
    @media (max-width: 768px) {
      .features-grid {
        grid-template-columns: 1fr;
      }
    }

    /* 场景交替 */
    .scenario-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
      align-items: center;
      margin-bottom: 4rem;
    }
    .scenario-img img {
      border-radius: 16px;
      border: 1px solid rgba(200,164,86,0.4);
    }
    @media (max-width: 768px) {
      .scenario-row {
        grid-template-columns: 1fr;
      }
    }

    /* 数据卡 */
    .stats-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 10px;
    }
    .stat-card {
      min-width: 200px;
      background: rgba(18,28,48,0.7);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(200,164,86,0.3);
      border-radius: 24px;
      padding: 24px;
      text-align: center;
      box-shadow: 0 0 18px rgba(200,164,86,0.2);
    }

    /* 价格表 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pricing-card {
      background: rgba(18,28,48,0.7);
      backdrop-filter: blur(12px);
      padding: 32px;
      border-radius: 20px;
      border: 1px solid rgba(200,164,86,0.25);
    }
    .pricing-card.featured {
      border-color: var(--luxury-gold);
      box-shadow: 0 0 35px rgba(200,164,86,0.5);
      transform: scale(1.03);
    }
    @media (max-width: 768px) {
      .pricing-grid {
        grid-template-columns: 1fr;
      }
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid rgba(200,164,86,0.25);
      padding: 18px 0;
    }
    .faq-question {
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }

    footer {
      background: #080F1E;
      border-top: 1px solid var(--luxury-gold);
      padding: 40px 0;
    }