/* roulang page: index */
:root {
        --primary: #E63946;
        --secondary: #1D3557;
        --bg-page: #F8F9FA;
        --text-main: #212529;
        --text-muted: #6C757D;
        --border-color: #E9ECEF;
      }
      body {
        font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
        color: var(--text-main);
        background-color: var(--bg-page);
        line-height: 1.75;
        letter-spacing: 0.02em;
      }
      .code-font {
        font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      }
      .chip-scroll::-webkit-scrollbar {
        display: none;
      }
      .chip-scroll {
        -ms-overflow-style: none;
        scrollbar-width: none;
      }
      .portal-card {
        background: #ffffff;
        border: 1px solid var(--border-color);
        box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.02);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
      }
      .portal-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(0,0,0,0.06);
      }
      .btn-primary {
        background-color: var(--primary);
        color: #ffffff;
        transition: background-color 0.2s ease;
      }
      .btn-primary:hover {
        background-color: #d62828;
      }

/* roulang page: article */
:root {
        --primary: #E63946;
        --secondary: #1D3557;
        --bg-page: #F8F9FA;
        --text-main: #212529;
        --text-muted: #6C757D;
        --border-color: #E9ECEF;
      }
      body {
        font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
        color: var(--text-main);
        background-color: var(--bg-page);
        line-height: 1.75;
        letter-spacing: 0.02em;
      }
      .chip-scroll::-webkit-scrollbar {
        display: none;
      }
      .chip-scroll {
        -ms-overflow-style: none;
        scrollbar-width: none;
      }
      .portal-card {
        background: #ffffff;
        border: 1px solid var(--border-color);
        box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.02);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
      }
      .portal-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(0,0,0,0.06);
      }
      .btn-primary {
        background-color: var(--primary);
        color: #ffffff;
        transition: background-color 0.2s ease;
      }
      .btn-primary:hover {
        background-color: #d62828;
      }
      .article-content {
        line-height: 1.85;
      }
      .article-content p {
        margin-bottom: 1.35rem;
      }
      .article-content h2 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--secondary);
        margin-top: 2rem;
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
        border-bottom: 1px solid var(--border-color);
      }
      .article-content h3 {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--secondary);
        margin-top: 1.5rem;
        margin-bottom: 0.75rem;
      }
      .article-content blockquote {
        border-left: 4px solid var(--primary);
        padding-left: 1rem;
        color: var(--text-muted);
        background-color: #fff5f5;
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
        margin-bottom: 1.25rem;
      }
      .article-content img {
        max-width: 100%;
        border-radius: 0.5rem;
        margin: 1.5rem auto;
      }

/* roulang page: category1 */
:root {
        --primary: #E63946;
        --secondary: #1D3557;
        --bg-page: #F8F9FA;
        --text-main: #212529;
        --text-muted: #6C757D;
        --border-color: #E9ECEF;
      }
      body {
        font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
        color: var(--text-main);
        background-color: var(--bg-page);
        line-height: 1.75;
        letter-spacing: 0.02em;
      }
      .chip-scroll::-webkit-scrollbar {
        display: none;
      }
      .chip-scroll {
        -ms-overflow-style: none;
        scrollbar-width: none;
      }
      .portal-card {
        background: #ffffff;
        border: 1px solid var(--border-color);
        box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.02);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
      }
      .portal-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(0,0,0,0.06);
      }
      .btn-primary {
        background-color: var(--primary);
        color: #ffffff;
        transition: background-color 0.2s ease;
      }
      .btn-primary:hover {
        background-color: #d62828;
      }
      .hero-gradient {
        background: linear-gradient(135deg, #1D3557 0%, #112233 100%);
      }