/* roulang page: index */
:root {
      --primary-deep: #1E1E24;
      --accent-wine: #7A263A;
      --accent-gold: #E8A640;
      --bg-warm: #F7F4F0;
      --card-bg: #FFFFFF;
      --border-soft: #E5E0DA;
      --text-heading: #1A1A1A;
      --text-body: #3C3C3C;
      --text-muted: #6B6B6B;
      --radius-card: 12px;
      --radius-btn: 8px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
      --shadow-hover: 0 6px 20px rgba(0,0,0,0.08);
      --font-heading: 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
      --font-body: 'Inter', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: var(--font-body);
      background-color: var(--bg-warm);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4 {
      font-family: var(--font-heading);
      color: var(--text-heading);
      letter-spacing: -0.02em;
    }
    h1 {
      font-size: 48px;
      line-height: 1.2;
      font-weight: 700;
    }
    h2 {
      font-size: 36px;
      line-height: 1.25;
      font-weight: 700;
    }
    h3 {
      font-size: 22px;
      line-height: 1.35;
      font-weight: 600;
    }
    p {
      margin: 0 0 1rem;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .section-space {
      padding-top: 80px;
      padding-bottom: 80px;
    }
    @media (max-width: 768px) {
      h1 {
        font-size: 32px;
      }
      h2 {
        font-size: 26px;
      }
      .section-space {
        padding-top: 48px;
        padding-bottom: 48px;
      }
    }

    /* 导航双层样式 */
    .nav-glass {
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0,0,0,0.05);
      position: sticky;
      top: 0;
      z-index: 50;
    }
    .channel-tabs::-webkit-scrollbar {
      display: none;
    }
    .channel-tabs {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }
    .pill-active {
      color: var(--accent-wine);
      border-bottom: 3px solid var(--accent-wine);
      font-weight: 600;
    }
    .pill-inactive {
      color: var(--text-muted);
      border-bottom: 3px solid transparent;
      transition: color 0.2s;
    }
    .pill-inactive:hover {
      color: var(--text-heading);
    }

    /* 按钮 */
    .btn-primary {
      background-color: var(--accent-wine);
      color: white;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.25s;
      border: none;
      cursor: pointer;
      font-family: var(--font-heading);
      letter-spacing: 0.3px;
    }
    .btn-primary:hover {
      background-color: #5E1C2C;
      box-shadow: 0 0 0 3px rgba(122,38,58,0.2);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--accent-wine);
      color: var(--accent-wine);
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.25s;
      cursor: pointer;
      font-family: var(--font-heading);
    }
    .btn-outline:hover {
      background-color: rgba(122,38,58,0.08);
    }
    .btn-gold {
      background-color: var(--accent-gold);
      color: #1E1E24;
      font-weight: 700;
      border-radius: 30px;
      padding: 8px 20px;
      transition: background 0.2s;
    }
    .btn-gold:hover {
      background-color: #d4952e;
    }

    /* 卡片 */
    .card-highlight {
      background: var(--card-bg);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .card-highlight:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
      background-color: #FDFBFA;
    }
    .icon-circle {
      width: 48px;
      height: 48px;
      background-color: var(--accent-wine);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      transition: transform 0.2s;
    }
    .card-highlight:hover .icon-circle {
      transform: rotate(5deg);
    }

    /* 案例瀑布流 */
    .masonry-grid {
      columns: 3;
      column-gap: 24px;
    }
    .masonry-card {
      break-inside: avoid;
      margin-bottom: 24px;
      background: var(--card-bg);
      border-radius: 8px;
      border: 1px solid var(--border-soft);
      overflow: hidden;
      transition: all 0.25s;
      box-shadow: var(--shadow-sm);
    }
    .masonry-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .masonry-card img {
      transition: transform 0.4s;
      aspect-ratio: 16/9;
      object-fit: cover;
    }
    .masonry-card:hover img {
      transform: scale(1.05);
    }
    .masonry-card:hover h3 {
      color: var(--accent-wine);
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border-soft);
    }
    .faq-question {
      cursor: pointer;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      color: var(--text-heading);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s;
      background-color: #F9F2F4;
      border-radius: 6px;
      margin-bottom: 8px;
    }
    .faq-answer.open {
      max-height: 200px;
      padding: 16px;
    }
    .q-badge {
      background: var(--accent-wine);
      color: white;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-right: 12px;
      font-weight: 700;
      font-size: 14px;
    }

    /* 对比表 */
    .compare-col {
      background: var(--card-bg);
      border-radius: 16px;
      padding: 32px 28px;
      border: 1px solid var(--border-soft);
    }
    .feature-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 0;
      border-bottom: 1px dashed #eae5df;
    }

    @media (max-width: 1024px) {
      .masonry-grid {
        columns: 2;
      }
    }
    @media (max-width: 768px) {
      .masonry-grid {
        columns: 1;
      }
      .btn-primary, .btn-outline {
        width: 100%;
        margin-bottom: 12px;
      }
      .compare-divider {
        display: none;
      }
    }
    .footer-link {
      color: #b0adad;
      transition: color 0.2s;
    }
    .footer-link:hover {
      color: white;
    }