/* roulang page: index */
:root {
      --deep-space: #1E1B2E;
      --starlight-gold: #D4AF37;
      --champagne: #C9A96E;
      --warm-white: #FAF8F5;
      --soft-gray: #F3F0EB;
      --card-white: #FFFFFF;
      --text-dark: #2B2D42;
      --text-body: #4A4A4A;
      --text-muted: #6B7280;
      --border-light: #E5E0D8;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 28px rgba(0,0,0,0.08);
      --gold-glow: 0 0 18px rgba(212,175,55,0.25);
      --radius-xl: 1.5rem;
      --radius-full: 9999px;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Inter', system-ui, -apple-system, sans-serif;
      background-color: var(--warm-white);
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }
    h1, h2, h3, h4 {
      font-weight: 600;
      color: var(--text-dark);
      line-height: 1.3;
    }
    h1 {
      font-size: 3.2rem;
      font-weight: 700;
      letter-spacing: -0.02em;
    }
    h2 {
      font-size: 2.4rem;
      font-weight: 600;
    }
    h3 {
      font-size: 1.5rem;
      font-weight: 600;
    }
    .text-gold {
      color: var(--starlight-gold);
    }
    .bg-deep {
      background-color: var(--deep-space);
    }
    .btn-primary {
      background: linear-gradient(135deg, #1E1B2E 0%, #2D2B3A 100%);
      color: white;
      border-radius: var(--radius-full);
      padding: 0.85rem 2.2rem;
      font-weight: 500;
      transition: all 0.25s ease;
      display: inline-block;
      text-align: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.08);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      filter: brightness(1.15);
      box-shadow: var(--gold-glow);
      transform: translateY(-1px);
    }
    .btn-outline {
      border: 2px solid var(--deep-space);
      background: transparent;
      color: var(--deep-space);
      border-radius: var(--radius-full);
      padding: 0.85rem 2.2rem;
      font-weight: 500;
      transition: all 0.25s ease;
      display: inline-block;
      text-align: center;
    }
    .btn-outline:hover {
      background-color: rgba(30,27,46,0.08);
    }
    .card {
      background: var(--card-white);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-card);
      transition: transform 0.2s ease, box-shadow 0.25s ease;
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .badge-gold {
      background-color: #F5EBD6;
      color: #8E6F3C;
      border-radius: var(--radius-full);
      padding: 0.2rem 1rem;
      font-size: 0.8rem;
      font-weight: 500;
    }
    .nav-blur {
      backdrop-filter: blur(12px);
      background-color: rgba(250,248,245,0.8);
    }
    .hero-gradient {
      background: radial-gradient(circle at 30% 40%, #2D2B3A 0%, #1E1B2E 100%);
      position: relative;
      overflow: hidden;
    }
    .star-particle {
      position: absolute;
      width: 2px;
      height: 2px;
      background: rgba(212,175,55,0.5);
      border-radius: 50%;
      filter: blur(1px);
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease-in-out;
      background-color: #F9F7F3;
      border-radius: 0 0 1rem 1rem;
    }
    .accordion-input:checked ~ .accordion-content {
      max-height: 200px;
    }
    .accordion-input:checked + .accordion-label .fa-chevron-down {
      transform: rotate(180deg);
    }
    @media (max-width: 768px) {
      h1 { font-size: 2.5rem; }
      h2 { font-size: 2rem; }
      .mobile-full {
        width: 100%;
      }
    }
    footer {
      background-color: #1E1B2E;
      color: #D1CBC0;
    }
    footer a {
      color: #C9A96E;
    }