:root {
    --bg: #fbf9f6;
    --text-main: #1a1a1a;
    --text-muted: #666;
    --accent: #b33939;
    --line: #e0dcd5;
    --font-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  }

  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  body {
    background-color: var(--bg);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  .container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
  }

  /* Header */
  .site-header {
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    background-color: rgba(251, 249, 246, 0.95);
    backdrop-filter: blur(5px);
    z-index: 100;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: bold;
    letter-spacing: 1px;
  }

  .brand img {
    height: 32px;
    width: auto;
    border-radius: 4px;
  }

  .nav-scroll {
    overflow-x: auto;
    white-space: nowrap;
    -ms-overflow-style: none;
    scrollbar-width: none;
    margin-top: 15px;
    border-top: 1px solid var(--line);
    padding-top: 15px;
  }
  .nav-scroll::-webkit-scrollbar {
    display: none;
  }

  .nav-list {
    display: inline-flex;
    gap: 20px;
    list-style: none;
    padding: 0 5px;
  }

  .nav-list a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s;
  }

  .nav-list a:hover {
    color: var(--accent);
  }

  /* Typography & Layout */
  h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: normal;
    color: var(--text-main);
  }

  .section-divider {
    height: 1px;
    background-color: var(--line);
    margin: 60px 0;
  }

  .masonry {
    display: flex;
    flex-direction: column;
    gap: 40px;
  }

  .article-block {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .story-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
    display: block;
  }

  .story-text h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    line-height: 1.3;
  }

  .story-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 15px;
  }

  /* Hero */
  .hero {
    padding: 60px 0 40px;
    text-align: center;
  }

  .hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    letter-spacing: 2px;
  }

  .hero p {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 30px;
  }

  .download-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 30px;
    background-color: var(--text-main);
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-size: 1rem;
    transition: background-color 0.3s;
    cursor: pointer;
    border: none;
  }

  .btn:hover {
    background-color: var(--accent);
  }

  /* Grid variations */
  .grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .gallery-grid img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 6px;
    aspect-ratio: 3/4;
  }

  .faq-item {
    border-bottom: 1px solid var(--line);
    padding: 20px 0;
  }

  .faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
  }

  .faq-item p {
    color: var(--text-muted);
    margin-bottom: 0;
  }

  /* Baidu Modal */
  .modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
  }

  .modal-content {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    text-align: center;
  }

  .modal-content p {
    font-size: 1rem;
    margin-bottom: 15px;
    color: var(--text-main);
  }

  .copy-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
  }

  .copy-box input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font-size: 0.9rem;
    background: #f9f9f9;
    color: var(--text-muted);
  }

  .copy-box button {
    padding: 10px 15px;
    background: var(--text-main);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
  }

  .modal-close {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--line);
  }

  /* Footer */
  .site-footer {
    border-top: 1px solid var(--line);
    padding: 40px 0;
    margin-top: 60px;
    text-align: center;
    font-size: 0.85rem;
    color: #999;
  }

  .site-footer p {
    margin-bottom: 10px;
  }

  .site-footer a {
    color: #999;
    text-decoration: none;
  }

  .site-footer a:hover {
    text-decoration: underline;
  }

  /* Responsive */
  @media (min-width: 768px) {
    .masonry {
      flex-direction: row;
      flex-wrap: wrap;
      align-items: flex-start;
    }
    .article-block {
      flex-direction: row;
      align-items: center;
      gap: 40px;
    }
    .article-block.layout-reverse {
      flex-direction: row-reverse;
    }
    .article-block > * {
      flex: 1;
    }
    .story-image {
      width: 50%;
    }
    .grid-2 {
      grid-template-columns: 1fr 1fr;
    }
    .gallery-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .nav-scroll {
      margin-top: 0;
      border-top: none;
      padding-top: 0;
    }
    .header-inner {
      flex-direction: column;
      gap: 20px;
    }
  }

  @media (min-width: 1024px) {
    .masonry {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 60px;
    }
    .article-block {
      flex-direction: column;
      align-items: flex-start;
    }
    .article-block.layout-reverse {
      flex-direction: column;
    }
    .story-image {
      width: 100%;
    }
    .grid-2 {
      grid-template-columns: 2fr 1fr;
      gap: 50px;
    }
    .gallery-grid {
      grid-template-columns: repeat(4, 1fr);
    }
    .header-inner {
      flex-direction: row;
    }
    .nav-scroll {
      max-width: 70%;
    }
  }