:root {
      --primary: #1D7BFF;
      --theme-green: rgb(48,209,88);
      --dark-ink: #0B132B;
      --silver-white: #F8FAFC;
      --gray-light: #F1F5F9;
      --text-dark: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--text-dark); background-color: var(--silver-white); line-height: 1.7; }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
    
    
    header {
      background-color: rgba(11, 19, 43, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .nav-container {
      max-width: 1200px; margin: 0 auto; padding: 16px 24px;
      display: flex; justify-content: space-between; align-items: center;
    }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { height: 40px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { font-size: 20px; font-weight: 800; color: #FFF; }
    .nav-menu { display: flex; gap: 28px; align-items: center; }
    .nav-menu a { color: rgba(255, 255, 255, 0.8); font-weight: 500; font-size: 15px; }
    .cta-nav-btn {
      background: linear-gradient(135deg, var(--primary), var(--theme-green));
      color: #FFF !important; padding: 10px 20px !important; border-radius: 50px; font-weight: 600 !important;
    }
    .menu-toggle { display: none; background: none; border: none; color: #FFF; font-size: 24px; cursor: pointer; }

    
    .mobile-drawer {
      position: fixed; top: 0; left: -280px; width: 280px; height: 100vh;
      background-color: var(--dark-ink); z-index: 1100; padding: 30px 24px;
      display: flex; flex-direction: column; gap: 30px;
      transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
      box-shadow: 5px 0 25px rgba(0, 0, 0, 0.5);
    }
    .mobile-drawer.active { left: 0; }
    .drawer-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: 20px; }
    .drawer-close { background: none; border: none; color: #FFF; font-size: 24px; }
    .drawer-menu { display: flex; flex-direction: column; gap: 20px; }
    .drawer-menu a { color: rgba(255, 255, 255, 0.8); font-size: 16px; font-weight: 500; }
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-color: rgba(0, 0, 0, 0.6); z-index: 1050; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
    .drawer-overlay.active { opacity: 1; visibility: visible; }

    
    .article-breadcrumbs {
      max-width: 900px; margin: 30px auto 0; padding: 0 24px; font-size: 14px; color: var(--text-muted);
    }

    
    .article-layout {
      max-width: 900px; margin: 20px auto 80px; padding: 0 24px;
    }
    .article-header {
      background: #FFF; border: 1px solid var(--border-color); border-bottom: none; border-radius: 12px 12px 0 0; padding: 40px; text-align: left;
    }
    .article-meta-bar {
      display: flex; flex-wrap: wrap; gap: 15px; font-size: 14px; color: var(--text-muted); margin-bottom: 20px; border-bottom: 1px solid var(--gray-light); padding-bottom: 20px;
    }
    .article-meta-bar span { display: inline-flex; align-items: center; gap: 6px; }
    .article-main-title { font-size: 32px; font-weight: 800; color: var(--text-dark); line-height: 1.3; margin-bottom: 16px; }
    
    .article-body {
      background: #FFF; border: 1px solid var(--border-color); border-top: none; border-bottom: none; padding: 0 40px 40px; font-size: 16px; color: #334155;
    }
    .article-body p { margin-bottom: 24px; }
    .article-body h2, .article-body h3 { font-weight: 800; color: var(--text-dark); margin: 36px 0 16px; }
    .article-body h2 { font-size: 24px; border-left: 5px solid var(--primary); padding-left: 12px; }
    .article-body h3 { font-size: 20px; }
    .article-body img { border-radius: 8px; margin: 24px auto; display: block; max-width: 100%; }

    
    .article-inner-tags {
      display: flex; gap: 10px; flex-wrap: wrap; margin-top: 40px; border-top: 1px solid var(--gray-light); padding-top: 24px;
    }
    .article-inner-tags span { font-weight: bold; font-size: 14px; color: var(--text-dark); }
    .article-inner-tags a { background: var(--gray-light); color: var(--primary); font-size: 13px; padding: 6px 14px; border-radius: 50px; }
    .article-inner-tags a:hover { background: var(--primary); color: #FFF; }

    
    .prev-next-box {
      background: #FFF; border: 1px solid var(--border-color); border-radius: 0 0 12px 12px; padding: 30px 40px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--gray-light);
    }
    .pn-item { max-width: 48%; }
    .pn-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; margin-bottom: 6px; }
    .pn-link { font-size: 15px; font-weight: 700; color: var(--text-dark); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
    .pn-link:hover { color: var(--primary); }

    
    .related-box {
      margin-top: 60px;
    }
    .related-title { font-size: 22px; font-weight: 800; color: var(--text-dark); margin-bottom: 24px; }
    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .related-card { background: #FFF; border: 1px solid var(--border-color); border-radius: 12px; padding: 20px; transition: all 0.3s ease; }
    .related-card:hover { transform: translateY(-4px); border-color: var(--primary); }
    .related-card-title { font-size: 15px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

    
    footer {
      background-color: var(--dark-ink); color: rgba(255, 255, 255, 0.6); font-size: 14px; border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .footer-top { padding: 80px 24px 40px; }
    .footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; }
    .footer-brand p { margin-top: 16px; line-height: 1.7; }
    .footer-title { color: #FFF; font-size: 16px; font-weight: 700; margin-bottom: 24px; }
    .footer-links { list-style: none; }
    .footer-links li { margin-bottom: 12px; }
    .footer-links a { color: rgba(255, 255, 255, 0.6); }
    .footer-links a:hover { color: var(--theme-green); padding-left: 4px; }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.05); padding: 30px 24px; text-align: center; font-size: 13px; }

    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .menu-toggle { display: block; }
      .article-header, .article-body, .prev-next-box { padding: 24px 16px; }
      .prev-next-box { flex-direction: column; }
      .pn-item { max-width: 100%; }
      .related-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }