/* roulang page: index */
:root {
      --primary-deep: #1A1A2E;
      --accent-gold: #C9A84C;
      --cta-orange: #E85D3A;
      --bg-warm: #FBF9F3;
      --card-bg: #FFFFFF;
      --card-hover-bg: #FFFAF0;
      --light-section: #F3F0E8;
      --text-body: #3D3D3D;
      --text-muted: #6B6B6B;
      --text-light: #D5CFC0;
      --border-subtle: #E8E3D5;
      --shadow-sm: 0 2px 12px rgba(26, 26, 46, 0.06);
      --shadow-lg: 0 8px 28px rgba(26, 26, 46, 0.12);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-pill: 20px;
      --transition: 0.25s ease;
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-inter: "Inter", "SF Pro Display", sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      color: var(--text-body);
      background-color: var(--bg-warm);
      line-height: 1.75;
      margin: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, .h1, .h2, .h3, .h4 {
      font-weight: 600;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }
    /* 导航双层 */
    .navbar-top {
      background: #FFFFFF;
      border-bottom: 1px solid rgba(0,0,0,0.04);
      padding: 10px 0;
    }
    .logo-text {
      font-family: var(--font-inter);
      font-weight: 700;
      font-size: 24px;
      color: var(--primary-deep);
      letter-spacing: -0.3px;
    }
    .logo-text span {
      color: var(--accent-gold);
    }
    .nav-tabs-row {
      background: #FFFFFF;
      box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    }
    .nav-pills-custom {
      display: flex;
      flex-wrap: nowrap;
      overflow-x: auto;
      white-space: nowrap;
      -webkit-overflow-scrolling: touch;
      gap: 8px;
      padding: 12px 0;
      scrollbar-width: none;
    }
    .nav-pills-custom::-webkit-scrollbar {
      display: none;
    }
    .nav-pill-item {
      background: transparent;
      color: var(--text-muted);
      padding: 8px 20px;
      border-radius: var(--radius-pill);
      font-weight: 500;
      font-size: 15px;
      transition: background var(--transition), color var(--transition);
      display: inline-block;
    }
    .nav-pill-item.active, .nav-pill-item:hover {
      background: var(--primary-deep);
      color: var(--accent-gold);
    }
    .btn-primary-gold {
      background: var(--accent-gold);
      color: var(--primary-deep);
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      border: none;
      transition: background var(--transition), box-shadow var(--transition);
    }
    .btn-primary-gold:hover {
      background: #B8993E;
      box-shadow: 0 6px 20px rgba(201,168,76,0.35);
      color: var(--primary-deep);
    }
    .btn-outline-dark {
      border: 2px solid var(--primary-deep);
      color: var(--primary-deep);
      background: transparent;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 10px 26px;
      transition: all var(--transition);
    }
    .btn-outline-dark:hover {
      background: var(--primary-deep);
      color: #FBF9F3;
    }
    .btn-cta-orange {
      background: var(--cta-orange);
      color: #FFFFFF;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      border: none;
      transition: background var(--transition);
    }
    .btn-cta-orange:hover {
      background: #D14A2A;
      color: #fff;
    }
    .btn-outline-light {
      border: 2px solid #FFFFFF;
      color: #FFFFFF;
      background: transparent;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 10px 26px;
      transition: all var(--transition);
    }
    .btn-outline-light:hover {
      background: #FFFFFF;
      color: var(--primary-deep);
    }
    /* Hero */
    .hero-section {
      background: var(--primary-deep);
      color: #FFFFFF;
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }
    .hero-section::after {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 45%;
      height: 100%;
      background: radial-gradient(circle at center, rgba(201,168,76,0.08) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-image-wrapper {
      position: relative;
    }
    .hero-image-wrapper img {
      border-radius: 16px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    }
    /* 板块标题 */
    .section-title {
      font-size: 36px;
      font-weight: 600;
      color: var(--primary-deep);
      margin-bottom: 16px;
      letter-spacing: -0.3px;
    }
    .section-subtitle {
      color: var(--text-muted);
      font-size: 18px;
      max-width: 700px;
      margin: 0 auto 48px;
    }
    .bg-light-warm {
      background-color: var(--light-section);
    }
    .card-custom {
      background: var(--card-bg);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      height: 100%;
    }
    .card-custom:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      background: var(--card-hover-bg);
    }
    .icon-gold {
      color: var(--accent-gold);
      font-size: 40px;
      margin-bottom: 20px;
    }
    .case-card {
      display: flex;
      background: var(--card-bg);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      transition: var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-lg);
    }
    .case-accent-bar {
      width: 6px;
      background: var(--accent-gold);
      flex-shrink: 0;
    }
    .pricing-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-subtle);
      padding: 32px;
      position: relative;
      transition: var(--transition);
    }
    .pricing-card.popular {
      border: 2px solid var(--accent-gold);
      box-shadow: var(--shadow-lg);
    }
    .popular-badge {
      position: absolute;
      top: 0;
      right: 24px;
      background: var(--accent-gold);
      color: var(--primary-deep);
      font-weight: 600;
      font-size: 13px;
      padding: 4px 16px;
      border-radius: 0 0 8px 8px;
    }
    .accordion-button {
      background: #FFFFFF;
      font-weight: 600;
      color: var(--primary-deep);
      border: none;
      box-shadow: none;
      padding: 18px 20px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .accordion-button:not(.collapsed) {
      background: var(--bg-warm);
      color: var(--primary-deep);
    }
    .accordion-button:focus {
      box-shadow: none;
      border-color: var(--accent-gold);
    }
    .footer-dark {
      background: var(--primary-deep);
      color: #B0AD9E;
      padding: 60px 0 20px;
    }
    .footer-dark a {
      color: #B0AD9E;
      transition: color 0.2s;
    }
    .footer-dark a:hover {
      color: var(--accent-gold);
    }
    @media (max-width: 768px) {
      .section-title {
        font-size: 26px;
      }
      .hero-section {
        padding: 40px 0;
      }
      .nav-pill-item {
        padding: 6px 14px;
        font-size: 14px;
      }
    }