*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
    :root {
      --white: #ffffff;
      --bg: #faf8f5;
      --black: #0e0e0c;
      --gold: #c4a06a;
      --gold-dark: #a88a54;
      --text: #1a1a1a;
      --text-light: #8a8a8a;
      --text-lighter: #b0b0b0;
      --border: #e8e4de;
      --radius: 8px;
      --radius-lg: 16px;
      --shadow: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
      --trans: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: 'Noto Sans SC', -apple-system, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }
    .serif { font-family: 'Noto Serif SC', serif; }
    img { display: block; max-width: 100%; }
    a { text-decoration: none; color: inherit; }
    button { cursor: pointer; border: none; outline: none; font-family: inherit; }

    /* ========== 导航 ========== */
    .nav-header {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(18px) saturate(180%);
      -webkit-backdrop-filter: blur(18px) saturate(180%);
      border-bottom: 1px solid var(--border);
    }
    .nav-inner {
      max-width: 1260px; margin: 0 auto; padding: 0 40px;
      height: 72px; display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo { display: flex; align-items: center; text-decoration: none; }
    .logo-img { height: 38px; width: auto; display: block; object-fit: contain; }
    .nav-links { display: flex; align-items: center; gap: 32px; }
    .nav-links a {
      font-size: 13px; font-weight: 500; letter-spacing: 0.5px;
      color: var(--text); transition: color var(--trans);
      position: relative;
    }
    .nav-links a::after {
      content: ''; position: absolute; bottom: -4px; left: 0;
      width: 0; height: 1.5px; background: var(--gold);
      transition: width var(--trans);
    }
    .nav-links a:hover { color: var(--gold); }
    .nav-links a:hover::after { width: 100%; }
    .nav-links a.active { color: var(--gold); }
    .nav-links a.active::after { width: 100%; }
    .nav-cta {
      padding: 10px 24px; border-radius: 4px;
      background: var(--black); color: var(--white) !important;
      font-size: 12px; font-weight: 600; letter-spacing: 1.5px;
      transition: background var(--trans) !important;
    }
    .nav-cta::after { display: none !important; }
    .nav-cta:hover { background: var(--gold) !important; }

    #hamburger { display: none; background: none; padding: 4px; }
    #hamburger span { display: block; width: 22px; height: 1.5px; background: var(--text); margin: 6px 0; transition: var(--trans); }
    #mobile-menu {
      display: none; position: fixed; inset: 0; z-index: 2000;
      background: rgba(14,14,12,0.98); backdrop-filter: blur(20px);
      flex-direction: column; align-items: center; justify-content: center; gap: 32px;
    }
    #mobile-menu.open { display: flex; }
    #mobile-close { position: absolute; top: 24px; right: 40px; background: none; color: var(--white); font-size: 32px; }
    #mobile-menu a { color: var(--white); font-size: 18px; font-weight: 500; letter-spacing: 2px; }
    #mobile-menu a:hover { color: var(--gold); }

    /* ========== 文章 Hero ========== */
    .article-hero { padding: 140px 0 0; background: var(--white); }
    .container { max-width: 860px; margin: 0 auto; padding: 0 40px; }
    .article-breadcrumb {
      display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
      margin-bottom: 26px;
      font-size: 12px; color: var(--text-lighter);
    }
    .article-breadcrumb a { color: var(--text-light); transition: color var(--trans); }
    .article-breadcrumb a:hover { color: var(--gold); }
    .article-breadcrumb-plain { color: var(--text-lighter); }
    .article-meta-top {
      display: flex; align-items: center; gap: 20px; margin-bottom: 28px;
    }
    .article-tag {
      display: inline-block; padding: 6px 16px;
      background: var(--bg); border: 1px solid var(--border);
      border-radius: 30px; font-size: 12px; font-weight: 600;
      color: var(--gold); letter-spacing: 1px;
    }
    .article-date { font-size: 13px; color: var(--text-lighter); }
    .article-title {
      font-family: 'Noto Serif SC', serif;
      font-size: clamp(32px, 5vw, 52px); font-weight: 700;
      line-height: 1.25; margin-bottom: 20px;
    }
    .article-subtitle {
      font-size: 18px; color: var(--text-light); line-height: 1.7;
      margin-bottom: 32px; padding-bottom: 32px;
      border-bottom: 1px solid var(--border);
    }
    .article-author {
      display: flex; align-items: center; gap: 12px; padding-bottom: 40px;
    }
    .author-avatar {
      width: 48px; height: 48px; border-radius: 50%;
      background: linear-gradient(135deg, var(--gold), var(--gold-dark));
      display: flex; align-items: center; justify-content: center;
      color: white; font-weight: 600; font-size: 16px;
    }
    .author-info { display: flex; flex-direction: column; gap: 2px; }
    .author-name { font-size: 14px; font-weight: 600; }
    .author-title { font-size: 12px; color: var(--text-lighter); }

    /* 封面图 */
    .article-cover {
      margin: 0 -40px 56px; aspect-ratio: 16/9;
      background: linear-gradient(135deg, #e8e4de 0%, #d4cfc7 100%);
      position: relative; overflow: hidden;
    }
    .article-cover::after {
      content: '封面图区域';
      position: absolute; inset: 0;
      display: flex; align-items: center; justify-content: center;
      font-size: 14px; color: var(--text-lighter);
      border: 2px dashed var(--border); margin: 20px; border-radius: var(--radius);
    }

    /* 文章正文 */
    .article-body { font-size: 16px; line-height: 1.9; color: var(--text); }
    .article-body p { margin-bottom: 24px; }
    .article-body h2 {
      font-family: 'Noto Serif SC', serif;
      font-size: 26px; font-weight: 600; margin: 48px 0 20px;
    }
    .article-body h3 {
      font-family: 'Noto Serif SC', serif;
      font-size: 20px; font-weight: 600; margin: 36px 0 16px;
    }
    .article-body blockquote {
      margin: 32px 0; padding: 24px 32px;
      background: var(--bg); border-left: 4px solid var(--gold);
      border-radius: 0 var(--radius) var(--radius) 0;
      font-size: 17px; color: var(--text); font-style: italic;
    }
    .article-body ul, .article-body ol { margin: 20px 0 24px 24px; }
    .article-body li { margin-bottom: 10px; }
    .article-body strong { color: var(--text); font-weight: 600; }

    /* 关键数据 */
    .highlight-grid {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: 24px; margin: 40px 0;
    }
    .highlight-item {
      background: var(--white); border-radius: var(--radius);
      padding: 28px 24px; text-align: center;
      border: 1px solid var(--border);
    }
    .highlight-num {
      font-family: 'Noto Serif SC', serif;
      font-size: 36px; font-weight: 700; color: var(--gold); margin-bottom: 8px;
    }
    .highlight-label { font-size: 13px; color: var(--text-light); }

    /* 文章底部 */
    .article-footer {
      margin-top: 56px; padding-top: 32px;
      border-top: 1px solid var(--border);
      display: flex; align-items: center; justify-content: space-between;
    }
    .article-tags { display: flex; gap: 12px; }
    .article-tag-btn {
      padding: 6px 14px; background: var(--bg);
      border: 1px solid var(--border); border-radius: 20px;
      font-size: 12px; color: var(--text-light); transition: var(--trans);
    }
    .article-tag-btn:hover { border-color: var(--gold); color: var(--gold); }
    .article-share { display: flex; align-items: center; gap: 12px; }
    .share-label { font-size: 13px; color: var(--text-lighter); }
    .share-btn {
      width: 36px; height: 36px; border-radius: 50%;
      background: var(--bg); border: 1px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      transition: var(--trans);
    }
    .share-btn:hover { background: var(--gold); border-color: var(--gold); color: white; }
    .share-btn svg { width: 16px; height: 16px; }

    /* 相关文章 */
    .related-section { padding: 80px 0; background: var(--white); }
    .related-header {
      display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px;
    }
    .related-header h2 { font-family: 'Noto Serif SC', serif; font-size: 28px; font-weight: 600; }
    .related-header a {
      font-size: 14px; color: var(--gold);
      display: flex; align-items: center; gap: 6px;
    }
    .related-header a:hover { text-decoration: underline; }
    .related-grid {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .related-card {
      background: var(--bg); border-radius: var(--radius);
      overflow: hidden; border: 1px solid var(--border); transition: var(--trans);
    }
    .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .related-thumb {
      aspect-ratio: 16/10;
      background: linear-gradient(135deg, #e8e4de 0%, #d4cfc7 100%);
      position: relative;
    }
    .related-thumb::after {
      content: '缩略图';
      position: absolute; inset: 0;
      display: flex; align-items: center; justify-content: center;
      font-size: 12px; color: var(--text-lighter);
      border: 2px dashed var(--border); margin: 12px; border-radius: 6px;
    }
    .related-content { padding: 24px; }
    .related-tag { font-size: 11px; color: var(--gold); font-weight: 600; letter-spacing: 1px; margin-bottom: 10px; }
    .related-title {
      font-size: 16px; font-weight: 600; line-height: 1.5; margin-bottom: 12px;
      display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    }
    .related-meta { font-size: 12px; color: var(--text-lighter); }

    /* 上下篇导航 */
    .article-nav { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--border); }
    .article-nav-item {
      padding: 28px 40px; display: flex; flex-direction: column; gap: 8px;
      transition: background var(--trans);
    }
    .article-nav-item:first-child { border-right: 1px solid var(--border); }
    .article-nav-item:hover { background: var(--bg); }
    .article-nav-label { font-size: 12px; color: var(--text-lighter); display: flex; align-items: center; gap: 6px; }
    .article-nav-title { font-size: 15px; font-weight: 600; }

    /* Footer */
    .footer { background: var(--black); color: rgba(255,255,255,0.6); padding: 64px 0 0; }
    .footer-grid {
      display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 60px;
      padding-bottom: 56px; border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand p { font-size: 13px; line-height: 1.8; margin-top: 16px; max-width: 280px; }
    .footer h5 { color: var(--white); font-size: 13px; font-weight: 600; margin-bottom: 20px; letter-spacing: 1px; }
    .footer-links { display: flex; flex-direction: column; gap: 12px; }
    .footer-links a { font-size: 13px; color: rgba(255,255,255,0.45); transition: color var(--trans); }
    .footer-links a:hover { color: var(--gold); }
    .footer-bottom {
      display: flex; align-items: center; justify-content: space-between;
      padding: 24px 0; font-size: 12px; color: rgba(255,255,255,0.3);
    }
    .logo-img-footer { height: 32px; filter: brightness(0) invert(1); opacity: 0.7; }

    @media (max-width: 960px) {
      .container { padding: 0 24px; }
      .nav-links { display: none; }
      #hamburger { display: block; }
      .article-cover { margin: 0 -24px 48px; }
      .highlight-grid { grid-template-columns: 1fr; gap: 16px; }
      .related-grid { grid-template-columns: 1fr; }
      .article-nav { grid-template-columns: 1fr; }
      .article-nav-item:first-child { border-right: none; border-bottom: 1px solid var(--border); }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
    }
    @media (max-width: 600px) {
      .article-hero { padding: 120px 0 0; }
      .article-title { font-size: 28px; }
      .article-footer { flex-direction: column; gap: 24px; align-items: flex-start; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }