/* roulang page: index */
:root {
      --primary-deep: #6B1D2F;
      --primary-dark: #3A0D17;
      --accent-gold: #C9A96E;
      --accent-gold-hover: #B08D4B;
      --bg-warm: #F7F5F2;
      --bg-dark: #1A1214;
      --text-primary: #1C1C1C;
      --text-secondary: #5C5C5C;
      --text-light: #F0E6D8;
      --border-light: #E5E0D8;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
      --radius-card: 12px;
      --radius-btn: 8px;
      --transition: 200ms ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
      margin: 0;
      background-color: #FFFFFF;
      color: var(--text-primary);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    .font-serif-custom {
      font-family: 'Georgia', 'Times New Roman', 'Songti SC', 'SimSun', serif;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, a {
      cursor: pointer;
      transition: var(--transition);
    }
    .container-main {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    @media (max-width: 768px) {
      .container-main {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

    /* 导航滚动效果 */
    .nav-scrolled {
      background-color: rgba(255,255,255,0.95);
      backdrop-filter: blur(12px);
      box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    }

    /* 手风琴动画 */
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.25s ease;
      background-color: transparent;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 24px;
    }
    .faq-item.active .faq-indicator {
      border-left: 2px solid var(--accent-gold);
      padding-left: 16px;
    }
    .faq-icon {
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 装饰纹理 */
    .hero-pattern {
      background: radial-gradient(circle at 30% 20%, #6B1D2F 0%, #1A1214 85%);
      position: relative;
    }
    .hero-pattern::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60" viewBox="0 0 60 60"><path d="M30 5 L55 30 L30 55 L5 30 Z" fill="none" stroke="rgba(201,169,110,0.08)" stroke-width="1"/></svg>');
      background-size: 80px 80px;
      pointer-events: none;
    }

    .gold-line {
      background-color: var(--accent-gold);
      height: 2px;
      width: 32px;
      display: inline-block;
    }
    .accent-bar-left {
      border-left: 4px solid var(--accent-gold);
    }

    @media (max-width: 1023px) {
      .mobile-menu {
        transform: translateX(100%);
        transition: transform 0.3s ease;
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 280px;
        background-color: var(--bg-dark);
        z-index: 50;
        padding: 24px;
        display: flex;
        flex-direction: column;
        gap: 24px;
      }
      .mobile-menu.open {
        transform: translateX(0);
      }
      .overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 40;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s;
      }
      .overlay.show {
        opacity: 1;
        pointer-events: auto;
      }
    }