/* roulang page: index */
:root {
      --babylon-purple: #3D1C5C;
      --babylon-gold: #C8A96E;
      --babylon-deep: #2B1A3A;
      --warm-bg: #FBF7F2;
      --card-bg: #FFFFFF;
      --card-warm-bg: #FFFAF5;
      --text-dark: #2B2B2B;
      --text-muted: #5A4A6A;
      --text-light: #D4D4D4;
      --gold-border: rgba(200, 169, 110, 0.3);
      --purple-shadow: rgba(61, 28, 92, 0.12);
      --gold-glow: rgba(200, 169, 110, 0.4);
      --border-radius-card: 20px;
      --border-radius-btn: 50px;
      --border-radius-input: 12px;
      --border-radius-badge: 8px;
      --section-spacing: 140px;
      --card-gap: 28px;
      --font-heading: 'Noto Serif SC', 'Times New Roman', serif;
      --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--warm-bg);
      color: var(--text-dark);
      line-height: 1.8;
      font-size: 16px;
      margin: 0;
      overflow-x: hidden;
    }

    h1, h2, h3, .h1, .h2, .h3 {
      font-family: var(--font-heading);
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    h1 {
      font-size: 48px;
      line-height: 1.2;
    }
    h2 {
      font-size: 36px;
      line-height: 1.25;
    }
    h3 {
      font-size: 24px;
      line-height: 1.35;
    }

    a {
      color: var(--babylon-purple);
      text-decoration: none;
      transition: all 0.25s ease;
    }
    a:hover {
      color: var(--babylon-gold);
    }

    img {
      max-width: 100%;
      height: auto;
    }

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

    /* 导航双层结构 */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1050;
      transition: background 0.3s, backdrop-filter 0.3s, box-shadow 0.3s;
      background: transparent;
      backdrop-filter: blur(0px);
    }
    .navbar-scrolled {
      background: rgba(251, 247, 242, 0.85);
      backdrop-filter: blur(14px);
      box-shadow: 0 8px 28px rgba(61, 28, 92, 0.08);
    }
    .nav-brand {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 22px;
      background: linear-gradient(135deg, #3D1C5C 0%, #C8A96E 90%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: flex;
      align-items: center;
      gap: 8px;
      letter-spacing: 1px;
    }
    .nav-brand i {
      font-size: 28px;
      background: linear-gradient(135deg, #3D1C5C, #C8A96E);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .nav-cta-btn {
      background: linear-gradient(135deg, #C8A96E 0%, #E0C78A 100%);
      border: none;
      color: #1A1A1A !important;
      font-weight: 600;
      border-radius: 50px;
      padding: 0.6rem 1.8rem;
      font-size: 0.9rem;
      letter-spacing: 0.5px;
      transition: all 0.3s;
      box-shadow: 0 4px 12px rgba(200,169,110,0.3);
    }
    .nav-cta-btn:hover {
      background: linear-gradient(135deg, #E0C78A 0%, #C8A96E 100%);
      box-shadow: 0 8px 18px rgba(200,169,110,0.5);
      transform: translateY(-1px);
      color: #1A1A1A !important;
    }
    .channel-pills .nav-link {
      font-family: var(--font-body);
      font-weight: 500;
      color: #4A3A5A;
      border: 1px solid transparent;
      border-radius: 50px;
      padding: 0.5rem 1.5rem;
      margin: 0 4px;
      transition: all 0.25s;
      background: transparent;
      font-size: 0.95rem;
    }
    .channel-pills .nav-link.active {
      background: #3D1C5C;
      color: #C8A96E;
      border-color: #3D1C5C;
      font-weight: 600;
    }
    .channel-pills .nav-link:hover:not(.active) {
      border-color: rgba(200,169,110,0.5);
      color: #3D1C5C;
    }
    .mobile-scroll-row {
      overflow-x: auto;
      white-space: nowrap;
      -ms-overflow-style: none;
      scrollbar-width: none;
      mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
      -webkit-mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
    }
    .mobile-scroll-row::-webkit-scrollbar {
      display: none;
    }

    .section-block {
      padding: var(--section-spacing) 0;
    }

    .hero-section {
      min-height: 100vh;
      background: radial-gradient(circle at 20% 20%, #3D1C5C, #1A0E2A);
      position: relative;
      display: flex;
      align-items: center;
      color: white;
      overflow: hidden;
    }
    .hero-texture {
      position: absolute;
      top:0; left:0; width:100%; height:100%;
      background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" opacity="0.08"><path d="M20 20 L40 20 L30 40 Z" fill="none" stroke="%23C8A96E" stroke-width="1"/><circle cx="70" cy="70" r="10" fill="none" stroke="%23C8A96E" stroke-width="1"/></svg>');
      pointer-events: none;
    }
    .hero-title {
      font-size: 52px;
      background: linear-gradient(180deg, #F9E6B3 0%, #C8A96E 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.15;
    }
    .hero-img-card {
      border-radius: 28px;
      border: 2px solid rgba(200,169,110,0.5);
      box-shadow: 0 30px 50px rgba(0,0,0,0.4);
      animation: float 5s ease-in-out infinite;
      max-width: 100%;
    }
    @keyframes float {
      0% { transform: translateY(0px); }
      50% { transform: translateY(-12px); }
      100% { transform: translateY(0px); }
    }

    .btn-primary-gold {
      background: linear-gradient(135deg, #C8A96E, #DEB878);
      border: none;
      color: #1A1A1A;
      font-weight: 600;
      border-radius: 50px;
      padding: 0.9rem 2.4rem;
      box-shadow: 0 10px 22px rgba(200,169,110,0.4);
      transition: 0.3s;
    }
    .btn-primary-gold:hover {
      background: linear-gradient(135deg, #DEB878, #C8A96E);
      box-shadow: 0 14px 28px rgba(200,169,110,0.6);
      transform: translateY(-2px);
      color: #1A1A1A;
    }
    .btn-outline-light-custom {
      border: 1.5px solid rgba(255,255,255,0.7);
      color: white;
      border-radius: 50px;
      padding: 0.8rem 2.2rem;
      background: transparent;
    }
    .btn-outline-light-custom:hover {
      background: rgba(255,255,255,0.12);
      border-color: #C8A96E;
      color: #C8A96E;
    }

    .card-luxury {
      background: var(--card-bg);
      border-radius: 20px;
      border: 1px solid rgba(200,169,110,0.2);
      box-shadow: 0 20px 35px -10px rgba(61,28,92,0.1);
      transition: all 0.3s;
    }
    .card-luxury:hover {
      transform: translateY(-8px);
      box-shadow: 0 30px 45px -10px rgba(61,28,92,0.2);
      border-color: rgba(200,169,110,0.5);
    }

    .data-badge {
      background: #FFFAF5;
      border-radius: 16px;
      padding: 1.5rem;
      text-align: center;
      box-shadow: inset 0 2px 8px rgba(200,169,110,0.15);
    }
    .data-number {
      font-size: 48px;
      font-weight: 700;
      background: linear-gradient(135deg, #3D1C5C, #5A2E7A);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .testimonial-card {
      background: #FFFBF5;
      border-left: 6px solid #C8A96E;
      border-radius: 18px;
    }
    .accordion-button:not(.collapsed) {
      background-color: #F3ECFE;
      color: #3D1C5C;
      box-shadow: none;
      border-color: #C8A96E;
    }
    .accordion-button {
      font-weight: 600;
    }
    .footer-dark {
      background: #2B1A3A;
      color: #D4D4D4;
    }
    @media (max-width: 768px) {
      h1 { font-size: 36px; }
      h2 { font-size: 28px; }
      .section-block { padding: 80px 0; }
      .hero-title { font-size: 38px; }
    }