:root {
      --primary-color: rgb(14, 116, 144);
      --primary-hover: rgb(15, 118, 110);
      --text-main: #1F2937;
      --text-muted: #6B7280;
      --bg-light: #F9FAFB;
      --border-color: #E5E7EB;
      --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--text-main); line-height: 1.6; background: #fff; }
    a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
    
    
    header { background: #fff; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
    .header-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 15px 20px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--text-main); white-space: nowrap; }
    .logo .fallback-txt { display: none; font-size: 18px; font-weight: 800; color: var(--primary-color); }
    
    nav.nav-desktop { display: flex; align-items: center; gap: 24px; }
    nav.nav-desktop a { font-size: 15px; font-weight: 500; color: var(--text-main); }
    nav.nav-desktop a:hover { color: var(--primary-color); }
    
    .nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 5px; }
    .nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-main); margin: 5px 0; transition: 0.3s; }
    
    
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 199; opacity: 0; visibility: hidden; transition: 0.3s; }
    .drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: #fff; z-index: 200; box-shadow: 2px 0 10px rgba(0,0,0,0.1); transition: 0.3s ease-in-out; display: flex; flex-direction: column; padding: 20px; }
    .drawer.active { left: 0; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }
    .drawer-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-muted); }
    .drawer-nav { display: flex; flex-direction: column; gap: 18px; overflow-y: auto; flex-grow: 1; }
    .drawer-nav a { font-size: 16px; font-weight: 500; color: var(--text-main); padding: 8px 0; border-bottom: 1px dashed var(--bg-light); }
    .drawer-nav a:hover { color: var(--primary-color); }

    
    .breadcrumb-area { background: var(--bg-light); border-bottom: 1px solid var(--border-color); padding: 15px 20px; }
    .breadcrumb-container { max-width: 1200px; margin: 0 auto; font-size: 14px; color: var(--text-muted); }
    .breadcrumb-container a { color: var(--primary-color); }
    .breadcrumb-container a:hover { text-decoration: underline; }

    
    .main-content { padding: 50px 20px; }
    .content-container { max-width: 800px; margin: 0 auto; }
    
    article.post-detail { border-bottom: 1px solid var(--border-color); padding-bottom: 40px; margin-bottom: 40px; }
    .post-header { margin-bottom: 30px; }
    .post-header h1 { font-size: 34px; font-weight: 800; line-height: 1.3; color: var(--text-main); margin-bottom: 20px; }
    
    .post-meta-detailed { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: var(--text-muted); border-bottom: 1px solid var(--border-color); padding-bottom: 15px; margin-bottom: 25px; }
    .post-meta-detailed span { display: inline-flex; align-items: center; gap: 6px; }
    
    .post-body { font-size: 16px; line-height: 1.8; color: #374151; }
    .post-body p { margin-bottom: 25px; }
    .post-body h2, .post-body h3 { font-weight: 700; color: var(--text-main); margin: 35px 0 15px; }
    .post-body img { max-width: 100%; height: auto; border-radius: 8px; margin: 20px auto; display: block; box-shadow: var(--card-shadow); }

    .post-tags-container { display: flex; flex-wrap: wrap; gap: 10px; margin: 30px 0; }
    .post-tag-btn { font-size: 13px; background: var(--bg-light); color: var(--primary-color); border: 1px solid var(--border-color); padding: 4px 12px; border-radius: 50px; }
    .post-tag-btn:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }

    
    .post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; border-top: 1px solid var(--border-color); padding-top: 30px; margin-bottom: 50px; }
    .p-nav-link { background: var(--bg-light); border: 1px solid var(--border-color); padding: 15px 20px; border-radius: 10px; display: block; }
    .p-nav-link:hover { border-color: var(--primary-color); }
    .p-nav-lbl { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 5px; }
    .p-nav-title { font-size: 15px; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }

    
    .related-section { margin-top: 60px; }
    .related-title { font-size: 22px; font-weight: 700; color: var(--text-main); margin-bottom: 25px; }
    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .rel-card { background: #fff; border: 1px solid var(--border-color); border-radius: 10px; overflow: hidden; box-shadow: var(--card-shadow); display: flex; flex-direction: column; }
    .rel-img { width: 100%; height: 140px; object-fit: cover; background: #e5e7eb; }
    .rel-info { padding: 15px; flex-grow: 1; display: flex; flex-direction: column; justify-content: space-between; }
    .rel-info h4 { font-size: 15px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .rel-info h4 a:hover { color: var(--primary-color); }
    .rel-meta { font-size: 11px; color: var(--text-muted); }

    
    footer { background: #111827; color: #9CA3AF; padding: 60px 20px 30px; font-size: 14px; }
    .footer-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 50px; }
    .footer-brand .logo span { color: #fff; }
    .footer-brand p { margin-top: 15px; line-height: 1.6; }
    .footer-column h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
    .footer-column ul { list-style: none; }
    .footer-column ul li { margin-bottom: 10px; }
    .footer-column ul li a:hover { color: #fff; }
    .footer-bottom { max-width: 1200px; margin: 0 auto; border-top: 1px solid #1F2937; padding-top: 30px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; }
    .footer-links { display: flex; gap: 20px; }
    .footer-links a:hover { color: #fff; }

    
    @media (max-width: 768px) {
      .nav-desktop { display: none; }
      .nav-toggle { display: block; }
      .post-header h1 { font-size: 26px; }
      .post-nav { grid-template-columns: 1fr; }
      .related-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }