/* roulang page: index */
:root {
      --deep-bronze: #4A3B2C;
      --forge-gold: #C9A96E;
      --warm-white: #FAF8F5;
      --card-white: #FFFFFF;
      --charcoal: #2C2416;
      --soft-border: #E5DDD2;
      --light-gold-texture: rgba(201, 169, 110, 0.08);
      --shadow-sm: 0 4px 20px rgba(44, 36, 22, 0.06);
      --shadow-md: 0 8px 30px rgba(44, 36, 22, 0.12);
      --radius-card: 12px;
      --radius-btn: 30px;
      --font-serif: 'Noto Serif SC', serif;
      --font-sans: 'Noto Sans SC', sans-serif;
      --font-number: 'Inter', sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.75;
      background-color: var(--warm-white);
      color: var(--charcoal);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    h1, h2, h3, .serif {
      font-family: var(--font-serif);
      font-weight: 700;
    }
    .number-font {
      font-family: var(--font-number);
      font-weight: 800;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }
      h1 { font-size: 2.5rem !important; }
      h2 { font-size: 2rem !important; }
      h3 { font-size: 1.35rem !important; }
    }
    /* 导航样式 */
    .nav-blur {
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--soft-border);
    }
    .search-box input {
      border: 1px solid #D4C9B8;
      transition: all 0.25s ease;
    }
    .search-box input:focus {
      outline: none;
      border-color: var(--deep-bronze);
      box-shadow: 0 0 0 4px rgba(74, 59, 44, 0.08);
    }
    .nav-link {
      position: relative;
      font-size: 0.875rem;
      color: var(--charcoal);
      transition: color 0.2s;
    }
    .nav-link:hover {
      color: var(--forge-gold);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--forge-gold);
      transition: width 0.25s ease;
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .mobile-menu {
      display: none;
    }
    @media (max-width: 1024px) {
      .desktop-nav-links {
        display: none;
      }
      .mobile-menu {
        display: flex;
      }
    }
    /* 按钮 */
    .btn-primary {
      background: var(--deep-bronze);
      color: white;
      border-radius: var(--radius-btn);
      padding: 0.85rem 2.2rem;
      font-weight: 500;
      transition: all 0.3s ease;
      display: inline-block;
      text-align: center;
      border: 1px solid transparent;
    }
    .btn-primary:hover {
      background: var(--forge-gold);
      color: var(--deep-bronze);
      border-color: var(--forge-gold);
    }
    .btn-outline-gold {
      background: transparent;
      color: var(--forge-gold);
      border: 1px solid var(--forge-gold);
      border-radius: var(--radius-btn);
      padding: 0.75rem 2rem;
      transition: 0.3s;
    }
    .btn-outline-gold:hover {
      background: var(--forge-gold);
      color: var(--deep-bronze);
    }
    .card {
      background: var(--card-white);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .gold-divider {
      height: 4px;
      width: 64px;
      background: var(--forge-gold);
      margin: 0 auto;
    }
    .section-title {
      font-size: 2.25rem;
      margin-bottom: 0.75rem;
      color: var(--deep-bronze);
    }
    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid var(--soft-border);
    }
    .faq-question {
      cursor: pointer;
      padding: 1.2rem 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s;
      color: #5A5147;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 1.5rem;
    }
    .faq-item.active .faq-icon i {
      transform: rotate(45deg);
      color: var(--forge-gold);
    }
    /* 背景纹理 */
    .golden-texture {
      background-image: radial-gradient(circle at 20% 30%, rgba(201,169,110,0.05) 1px, transparent 1px);
      background-size: 40px 40px;
    }
    .hero-overlay {
      background: linear-gradient(180deg, rgba(250,248,245,0.9) 0%, rgba(250,248,245,0.88) 100%);
    }