*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; font-size: 16px; color: #222; background: #fff; min-height: 100vh; display: flex; flex-direction: column; }
    a { color: inherit; text-decoration: none; }

img {
  max-width: 100%;
  height: auto;
  display: block;
border-radius: 5px;
}

    /* HEADER */
    header { background: #3a7b8c; padding: 0 40px; }
    .header-inner { max-width: 980px; margin: 0 auto; height: 52px; display: flex; align-items: center; justify-content: space-between; }
    .brand { font-weight: 700; font-size: 18px; color: #fff; }
    nav { display: flex; gap: 20px; }
    nav a { color: #fff; font-size: 15px; opacity: 0.9; }
    nav a:hover { opacity: 1; text-decoration: underline; }

    /* MAIN */
    main { max-width: 740px; margin: 0 auto; padding: 40px 40px 60px; flex: 1; width: 100%; }

    /* ARTICLE */
    article { min-width: 0; }

    .breadcrumb { font-size: 13px; color: #888; margin-bottom: 24px; }
    .breadcrumb a { color: #3a7b8c; }
    .breadcrumb a:hover { text-decoration: underline; }
    .breadcrumb span { margin: 0 6px; }

    .post-category { font-size: 13px; font-weight: 600; color: #3a7b8c; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 10px; }

    h1 { font-size: 30px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; color: #111; }

    .post-meta { font-size: 13px; color: #888; margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid #e5e5e5; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
    .post-meta .author { color: #222; font-weight: 500; }
    .meta-sep { color: #ccc; }

    /* Body content */
    .post-body { font-size: 16px; line-height: 1.75; color: #333; }
    .post-body p { margin-bottom: 20px; }
    .post-body h2 { font-size: 21px; font-weight: 700; color: #111; margin: 36px 0 14px; }
    .post-body h3 { font-size: 17px; font-weight: 700; color: #111; margin: 28px 0 10px; }
    .post-body a { color: #3a7b8c; text-decoration: underline; }
    .post-body a:hover { color: #2a5f6e; }
    .post-body ul, .post-body ol { margin: 0 0 20px 24px; }
    .post-body li { margin-bottom: 6px; line-height: 1.7; }
    .post-body blockquote { border-left: 3px solid #3a7b8c; padding: 4px 0 4px 18px; margin: 24px 0; color: #555; font-style: italic; }
    .post-body blockquote p { margin: 0; }
    .post-body hr { border: none; border-top: 1px solid #e5e5e5; margin: 36px 0; }

    /* Table */
    .post-body table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 14px; }
    .post-body table caption { font-size: 12px; color: #888; text-align: left; margin-bottom: 8px; font-style: italic; }
    .post-body thead tr { background: #3a7b8c; color: #fff; }
    .post-body thead th { padding: 11px 14px; text-align: left; font-weight: 600; font-size: 13px; letter-spacing: 0.2px; }
    .post-body tbody tr { border-bottom: 1px solid #e5e5e5; }
    .post-body tbody tr:last-child { border-bottom: none; }
    .post-body tbody tr:nth-child(even) { background: #f9f9f9; }
    .post-body tbody tr:hover { background: #f0f7f9; }
    .post-body td { padding: 10px 14px; color: #333; vertical-align: middle; line-height: 1.5; }
    .post-body td .coin-badge { display: inline-flex; align-items: center; gap: 7px; }
    .post-body td .dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
    .post-body table { border: 1px solid #e5e5e5; border-radius: 4px; overflow: hidden; }

    /* Inline coin logo */
    .coin-ref { display: inline-flex; align-items: center; gap: 6px; background: #f5f5f5; border: 1px solid #e5e5e5; border-radius: 4px; padding: 2px 8px; font-size: 14px; vertical-align: middle; }
    .coin-ref img { width: 18px; height: 18px; }

    /* Tags */
    .post-tags { margin-top: 36px; padding-top: 24px; border-top: 1px solid #e5e5e5; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
    .post-tags span { font-size: 13px; color: #888; }
    .post-tag { font-size: 13px; padding: 4px 10px; border: 1px solid #ddd; border-radius: 3px; color: #555; }
    .post-tag:hover { border-color: #3a7b8c; color: #3a7b8c; }

    /* Author box */
    .author-box { margin-top: 36px; padding: 20px; border: 1px solid #e5e5e5; border-radius: 4px; display: flex; gap: 16px; align-items: flex-start; }
    .author-avatar { width: 48px; height: 48px; border-radius: 50%; background: #3a7b8c; color: #fff; font-weight: 700; font-size: 16px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .author-name { font-weight: 700; font-size: 15px; margin-bottom: 4px; }
    .author-bio { font-size: 14px; color: #666; line-height: 1.6; }

    /* Related posts */
    .related { margin-top: 40px; padding-top: 28px; border-top: 1px solid #e5e5e5; }
    .related h2 { font-size: 18px; font-weight: 700; margin-bottom: 18px; }
    .related-list { list-style: none; display: flex; flex-direction: column; gap: 0; }
    .related-item { padding: 14px 0; border-top: 1px solid #e5e5e5; }
    .related-item:last-child { border-bottom: 1px solid #e5e5e5; }
    .related-item .rc { font-size: 12px; font-weight: 600; color: #3a7b8c; text-transform: uppercase; margin-bottom: 4px; }
    .related-item a { font-size: 15px; font-weight: 600; color: #222; line-height: 1.4; display: block; }
    .related-item a:hover { color: #3a7b8c; text-decoration: underline; }
    .related-item .rm { font-size: 12px; color: #aaa; margin-top: 3px; }
  /* FOOTER */
    .site-footer { background: #0b1424; color: #9aa3b5; border-top: 1px solid rgba(255,255,255,0.08); margin-top: 56px; }
    .site-footer .footer-inner { max-width: 1140px; margin: 0 auto; padding: 48px 40px 32px; display: flex; gap: 64px; align-items: flex-start; }
    .footer-brand { flex: 0 0 280px; }
    .footer-logo { display: inline-block; color: #fff; font-size: 22px; font-weight: 700; margin-bottom: 12px; }
    .footer-tagline { color: #8a93a6; font-size: 14px; margin: 0 0 18px; }
    .footer-social { display: flex; gap: 10px; }
    .footer-social a { width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; background: rgba(255,255,255,0.06); color: #9aa3b5; transition: background .15s ease, color .15s ease; }
    .footer-social a:hover { background: rgba(78,140,255,0.18); color: #fff; }
    .footer-cols { flex: 1; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 32px; }
    .footer-col h3 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 14px; }
    .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .footer-col ul li a { font-size: 14px; color: #9aa3b5; }
    .footer-col ul li a:hover { color: #fff; }
    .footer-bottom { max-width: 1140px; margin: 0 auto; padding: 20px 40px 36px; border-top: 1px solid rgba(255,255,255,0.08); display: flex; justify-content: space-between; align-items: center; gap: 16px; font-size: 13px; color: #6f7890; }

    @media (max-width: 600px) {
      header, main { padding-left: 18px; padding-right: 18px; }
      .site-footer .footer-inner { flex-direction: column; gap: 36px; padding: 36px 20px 28px; }
      .footer-brand { flex: none; }
      .footer-bottom { flex-direction: column; align-items: flex-start; padding: 18px 20px 32px; }
    }