/* roulang page: index */
:root {
      --color-primary: #C67B4B;
      --color-primary-deep: #A85E32;
      --color-secondary: #2E2A28;
      --color-bg-warm: #F9F4EF;
      --color-accent: #E5A43C;
      --color-accent-hover: #D4952F;
      --color-text-soft: #6B5E58;
      --color-text-light: #B8A89A;
      --color-footer-text: #8C7B6E;
      --color-white: #FFFFFF;
      --radius-card: 12px;
      --radius-btn: 8px;
      --shadow-sm: 0 4px 20px rgba(46, 42, 40, 0.06);
      --shadow-md: 0 12px 32px rgba(46, 42, 40, 0.12);
      --font-serif: 'Noto Serif SC', serif;
      --font-sans: 'Noto Sans SC', sans-serif;
      --font-number: 'DIN Alternate', 'Noto Sans SC', sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--color-bg-warm);
      color: var(--color-secondary);
      margin: 0;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    /* 透明玻璃导航 */
    .glass-nav {
      background: rgba(249, 244, 239, 0.75);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(198, 123, 75, 0.15);
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      transition: all 0.3s ease;
    }
    .solid-nav {
      background: #F9F4EF;
      box-shadow: 0 2px 16px rgba(0,0,0,0.08);
      border-bottom: 1px solid rgba(198, 123, 75, 0.2);
    }
    .nav-link {
      color: var(--color-secondary);
      font-weight: 500;
      transition: color 0.2s;
      position: relative;
    }
    .nav-link:hover {
      color: var(--color-primary);
    }
    .cta-btn-nav {
      background: var(--color-accent);
      color: white;
      border-radius: var(--radius-btn);
      padding: 10px 24px;
      font-weight: 600;
      transition: all 0.25s;
      box-shadow: 0 4px 14px rgba(229, 164, 60, 0.25);
    }
    .cta-btn-nav:hover {
      background: var(--color-accent-hover);
      transform: scale(1.02);
      box-shadow: 0 8px 22px rgba(229, 164, 60, 0.35);
    }
    /* 主按钮 */
    .btn-primary {
      background: var(--color-accent);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 34px;
      font-weight: 600;
      display: inline-block;
      transition: all 0.25s;
      box-shadow: 0 6px 18px rgba(229, 164, 60, 0.2);
      text-align: center;
    }
    .btn-primary:hover {
      background: var(--color-accent-hover);
      transform: scale(1.03);
      box-shadow: 0 12px 28px rgba(229, 164, 60, 0.35);
    }
    .btn-outline {
      border: 1.5px solid var(--color-primary);
      color: var(--color-primary);
      background: transparent;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-weight: 600;
      transition: all 0.25s;
    }
    .btn-outline:hover {
      background: rgba(198, 123, 75, 0.08);
    }
    .section-padding {
      padding-top: 90px;
      padding-bottom: 90px;
    }
    .card-hover {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .card-hover:hover {
      transform: translateY(-6px);
      box-shadow: 0 24px 48px rgba(198, 123, 75, 0.12);
    }
    .accordion-header {
      cursor: pointer;
      transition: background 0.2s;
    }
    .accordion-icon {
      transition: transform 0.3s ease;
      color: var(--color-accent);
    }
    .rotate-icon {
      transform: rotate(45deg);
    }
    @media (max-width: 768px) {
      .section-padding {
        padding-top: 60px;
        padding-bottom: 60px;
      }
      .hero-title {
        font-size: 2.2rem;
      }
    }
    footer a:hover {
      color: var(--color-accent);
    }