*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --navy: #08162B; --navy-mid: #102038;
      --teal: #0891B2; --teal-light: #22D3EE; --teal-dark: #0E7490;
      --teal-bg: #F0FDFF;
      --white: #FFFFFF; --off-white: #F8FEFF;
      --gray-50: #F8FAFC; --gray-100: #F1F5F9;
      --gray-200: #E2E8F0; --gray-300: #CBD5E1;
      --gray-400: #94A3B8; --gray-500: #64748B;
      --gray-600: #475569; --gray-700: #334155; --gray-900: #0F172A;
      --accent: #0E7490;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 16px rgba(8,22,43,0.10), 0 2px 6px rgba(8,22,43,0.06);
      --shadow-lg: 0 10px 40px rgba(8,22,43,0.14), 0 4px 12px rgba(8,22,43,0.08);
      --radius: 14px;
    }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--white); color: var(--gray-900); line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }

    /* PROGRESS BAR */
    #progress-bar {
      position: fixed; top: 0; left: 0; height: 3px;
      background: linear-gradient(90deg, var(--teal), var(--teal-light));
      z-index: 9999; width: 0%; transition: width 0.1s linear;
      box-shadow: 0 0 10px rgba(8,145,178,0.5);
    }

    /* NAV */
    nav {
      position: sticky; top: 0; z-index: 100;
      background: rgba(8,22,43,0.97); backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255,255,255,0.06); padding: 0 1.5rem;
    }
    .nav-logo-icon {
      width: 32px; height: 32px;
      background: linear-gradient(135deg, var(--teal), var(--teal-dark));
      border-radius: 9px;
      display: flex; align-items: center; justify-content: center; font-size: 0.875rem;
      box-shadow: 0 2px 8px rgba(8,145,178,0.4);
    }
    .nav-back {
      display: flex; align-items: center; gap: 0.375rem;
      color: rgba(255,255,255,0.5); font-size: 0.875rem; font-weight: 500;
      padding: 0.375rem 0.875rem; border-radius: 8px; transition: all .2s;
      border: 1px solid rgba(255,255,255,0.08);
    }
    .nav-back:hover { color: var(--white); background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); }
    .nav-right { display: flex; align-items: center; gap: 0.75rem; }
    .nav-share {
      background: linear-gradient(135deg, var(--teal), var(--teal-dark));
      color: var(--white); font-size: 0.8125rem; font-weight: 700;
      padding: 0.4rem 1rem; border-radius: 8px; transition: all .2s; cursor: pointer;
      border: none; font-family: inherit; letter-spacing: 0.01em;
      box-shadow: 0 2px 8px rgba(8,145,178,0.35);
    }
    .nav-share:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(8,145,178,0.45); }

    /* HERO */
    .article-hero {
      background: linear-gradient(145deg, #08162B 0%, #0C1F3D 55%, #0A1829 100%);
      padding: 5rem 1.5rem 4rem; position: relative; overflow: hidden;
    }
    .article-hero::before {
      content: '';
      position: absolute; top: -20%; right: -5%;
      width: 700px; height: 700px;
      background: radial-gradient(circle, rgba(8,145,178,0.14) 0%, transparent 60%);
      pointer-events: none;
    }
    .article-hero::after {
      content: attr(data-emoji);
      position: absolute; right: 6%; top: 50%; transform: translateY(-50%);
      font-size: clamp(5rem, 10vw, 9rem); opacity: 0.06; pointer-events: none;
      line-height: 1;
    }
    .hero-inner { max-width: 820px; margin: 0 auto; position: relative; }
    .hero-breadcrumb {
      display: flex; align-items: center; gap: 0.5rem;
      font-size: 0.8125rem; color: rgba(255,255,255,0.38); margin-bottom: 1.5rem;
    }
    .hero-breadcrumb a { color: rgba(255,255,255,0.48); transition: color .2s; }
    .hero-breadcrumb a:hover { color: var(--teal-light); }
    .hero-breadcrumb span { color: rgba(255,255,255,0.2); }
    .hero-cat-badge {
      display: inline-flex; align-items: center; gap: 0.4rem;
      background: rgba(8,145,178,0.18); border: 1px solid rgba(8,145,178,0.35);
      color: var(--teal-light); font-size: 0.8125rem; font-weight: 600;
      padding: 0.35rem 0.9rem; border-radius: 100px; margin-bottom: 1.25rem;
      letter-spacing: 0.01em;
    }
    .hero-cat-dot {
      width: 6px; height: 6px; border-radius: 50%;
      background: var(--teal-light); display: inline-block;
      box-shadow: 0 0 6px rgba(34,211,238,0.6);
    }
    .article-hero h1 {
      font-size: clamp(1.875rem, 4.5vw, 3.25rem); font-weight: 900;
      color: var(--white); letter-spacing: -0.04em; line-height: 1.08;
      margin-bottom: 1.25rem;
      text-shadow: 0 2px 20px rgba(0,0,0,0.3);
    }
    .hero-subtitle {
      font-size: clamp(1rem, 2vw, 1.175rem); color: rgba(255,255,255,0.62);
      line-height: 1.7; margin-bottom: 2.25rem; max-width: 680px;
    }
    .hero-meta {
      display: flex; flex-wrap: wrap; gap: 1.25rem; align-items: center;
    }
    .hero-meta-item {
      display: flex; align-items: center; gap: 0.4rem;
      font-size: 0.8125rem; color: rgba(255,255,255,0.42); font-weight: 500;
    }
    .hero-source-badge {
      background: rgba(8,145,178,0.18); border: 1px solid rgba(8,145,178,0.3);
      color: var(--teal-light); font-size: 0.8rem; font-weight: 700;
      padding: 0.25rem 0.7rem; border-radius: 100px; letter-spacing: 0.02em;
    }

    /* LAYOUT */
    .article-layout {
      max-width: 1200px; margin: 0 auto;
      display: grid; grid-template-columns: 280px 1fr;
      gap: 3rem; padding: 3rem 1.5rem 4rem; align-items: start;
    }

    /* TOC SIDEBAR */
    .toc-sidebar { position: sticky; top: 82px; }
    .toc-card {
      background: var(--white); border: 1.5px solid var(--gray-200);
      border-radius: var(--radius); padding: 1.5rem 1.25rem;
      box-shadow: var(--shadow-sm); margin-bottom: 1.25rem;
    }
    .toc-label {
      font-size: 0.7rem; font-weight: 800; text-transform: uppercase;
      letter-spacing: 0.08em; color: var(--teal-dark); margin-bottom: 0.875rem;
      padding-bottom: 0.625rem; border-bottom: 2px solid var(--teal-bg);
    }
    #toc-list { list-style: none; display: flex; flex-direction: column; gap: 0.125rem; }
    #toc-list li { }
    #toc-list a {
      display: block; font-size: 0.8125rem; color: var(--gray-600); font-weight: 500;
      padding: 0.3rem 0.5rem; border-radius: 6px; transition: all .2s;
      line-height: 1.4; border-left: 2px solid transparent;
    }
    #toc-list a:hover { color: var(--teal-dark); background: var(--teal-bg); border-left-color: var(--teal); padding-left: 0.75rem; }
    #toc-list a.active { color: var(--teal-dark); background: var(--teal-bg); border-left-color: var(--teal); font-weight: 700; padding-left: 0.75rem; }

    .share-card {
      background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
      border-radius: var(--radius); padding: 1.25rem;
      box-shadow: var(--shadow-md);
    }
    .share-label {
      font-size: 0.7rem; font-weight: 800; text-transform: uppercase;
      letter-spacing: 0.08em; color: rgba(255,255,255,0.5); margin-bottom: 0.875rem;
    }
    .share-buttons { display: flex; flex-direction: column; gap: 0.5rem; }
    .share-btn {
      display: flex; align-items: center; justify-content: center; gap: 0.5rem;
      padding: 0.6rem 0.75rem; border-radius: 8px; font-size: 0.8125rem;
      font-weight: 700; cursor: pointer; transition: all .2s; border: none;
      font-family: inherit; letter-spacing: 0.01em;
    }
    .share-btn-twitter { background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.85); }
    .share-btn-twitter:hover { background: rgba(255,255,255,0.14); color: #fff; }
    .share-btn-reddit { background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.85); }
    .share-btn-reddit:hover { background: rgba(255,255,255,0.14); color: #fff; }
    .share-btn-copy { background: var(--teal); color: var(--white); }
    .share-btn-copy:hover { background: var(--teal-light); transform: translateY(-1px); }

    /* ARTICLE BODY */
    .article-body { min-width: 0; }
    .article-content { }
    .article-content h2 {
      font-size: clamp(1.375rem, 2.8vw, 1.875rem); font-weight: 800;
      color: var(--navy); letter-spacing: -0.03em;
      margin-top: 3rem; margin-bottom: 1rem; line-height: 1.15;
      padding-bottom: 0.625rem; border-bottom: 2px solid var(--gray-100);
      position: relative;
    }
    .article-content h2::before {
      content: '';
      position: absolute; bottom: -2px; left: 0;
      width: 3rem; height: 2px;
      background: linear-gradient(90deg, var(--teal), var(--teal-light));
    }
    .article-content h3 {
      font-size: clamp(1.05rem, 2vw, 1.25rem); font-weight: 700;
      color: var(--navy); letter-spacing: -0.02em;
      margin-top: 2rem; margin-bottom: 0.625rem; line-height: 1.3;
    }
    .article-content h4 {
      font-size: 1rem; font-weight: 700; color: var(--gray-700);
      margin-top: 1.5rem; margin-bottom: 0.5rem;
      text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.875rem;
    }
    .article-content p {
      font-size: 1.0625rem; line-height: 1.8; color: var(--gray-700);
      margin-bottom: 1.25rem;
    }
    .article-content ul, .article-content ol {
      padding-left: 1.5rem; margin-bottom: 1.25rem;
      display: flex; flex-direction: column; gap: 0.5rem;
    }
    .article-content li {
      font-size: 1.0625rem; line-height: 1.75; color: var(--gray-700);
    }
    .article-content ul li::marker { color: var(--teal); font-size: 1.15em; }
    .article-content ol li::marker { color: var(--teal-dark); font-weight: 700; }
    .article-content strong { color: var(--navy); font-weight: 700; }
    .article-content em { font-style: italic; color: var(--gray-500); }
    .article-content code {
      background: var(--teal-bg); color: var(--teal-dark); padding: 0.125rem 0.4rem;
      border-radius: 4px; font-size: 0.9em; font-family: 'Courier New', monospace;
    }
    .article-content a {
      color: var(--teal-dark); text-decoration: underline;
      text-underline-offset: 3px; text-decoration-color: rgba(8,145,178,0.4);
      transition: all .2s;
    }
    .article-content a:hover { color: var(--teal); text-decoration-color: var(--teal); }
    .article-content hr.article-divider {
      border: none; border-top: 1.5px solid var(--gray-100); margin: 2.5rem 0;
    }
    .article-caption {
      font-size: 0.9rem !important; color: var(--gray-400) !important;
      font-style: italic; text-align: center; margin: 1.5rem 0 !important;
    }

    /* TABLE */
    .table-wrap { overflow-x: auto; margin: 2rem 0; border-radius: var(--radius); box-shadow: var(--shadow-md); border: 1.5px solid var(--gray-200); }
    .table-wrap table { width: 100%; border-collapse: collapse; }
    .table-wrap th {
      background: linear-gradient(135deg, var(--navy), var(--navy-mid));
      color: var(--white); padding: 0.875rem 1rem;
      text-align: left; font-size: 0.7875rem; font-weight: 700;
      text-transform: uppercase; letter-spacing: 0.05em;
    }
    .table-wrap td {
      padding: 0.75rem 1rem; font-size: 0.9rem; color: var(--gray-700);
      border-bottom: 1px solid var(--gray-100); vertical-align: top;
    }
    .table-wrap tr:last-child td { border-bottom: none; }
    .table-wrap tr:hover td { background: var(--teal-bg); }
    .table-wrap a { color: var(--teal-dark); text-decoration: underline; text-underline-offset: 2px; }

    /* CALLOUT BOXES */
    .wisdom-callout {
      background: linear-gradient(135deg, var(--navy) 0%, #0D2040 100%);
      border-radius: var(--radius);
      padding: 2rem 2.25rem; margin: 2.5rem 0;
      border-left: 4px solid var(--teal);
      position: relative; overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .wisdom-callout::before {
      content: '';
      position: absolute; top: -50px; right: -50px;
      width: 180px; height: 180px;
      background: radial-gradient(circle, rgba(8,145,178,0.18) 0%, transparent 70%);
      pointer-events: none;
    }
    .wisdom-header {
      display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem;
    }
    .wisdom-icon { font-size: 1.5rem; }
    .wisdom-callout h2 {
      font-size: 1.25rem !important; font-weight: 800 !important;
      color: #FFFFFF !important; margin: 0 !important; padding: 0 !important;
      border: none !important; letter-spacing: -0.02em !important;
    }
    .wisdom-callout h2::before { display: none !important; }
    .wisdom-callout h2::after { display: none !important; }
    .wisdom-callout h3 { color: var(--teal-light) !important; font-size: 1rem !important; margin: 1.25rem 0 0.5rem !important; letter-spacing: -0.01em !important; }
    .wisdom-callout p { color: rgba(255,255,255,0.92) !important; font-size: 0.9375rem !important; line-height: 1.75 !important; }
    .wisdom-callout li { color: rgba(255,255,255,0.92) !important; font-size: 0.9375rem !important; line-height: 1.7 !important; }
    .wisdom-callout strong { color: var(--teal-light) !important; }
    .wisdom-callout ul, .wisdom-callout ol { margin-left: 1rem; }

    .tip-box {
      background: linear-gradient(135deg, #ECFDF5 0%, #F0FDF4 100%);
      border: 1.5px solid #A7F3D0; border-radius: var(--radius);
      padding: 1.25rem 1.5rem; margin: 1.75rem 0;
      border-left: 4px solid #059669;
    }
    .tip-box p { color: #064E3B !important; margin: 0 !important; font-size: 0.9375rem !important; line-height: 1.75 !important; }

    .warning-box {
      background: linear-gradient(135deg, #FFFBEB 0%, #FEF9C3 100%);
      border: 1.5px solid #FCD34D; border-radius: var(--radius);
      padding: 1.25rem 1.5rem; margin: 1.75rem 0;
      border-left: 4px solid #D97706;
    }
    .warning-box p { color: #78350F !important; margin: 0 !important; font-size: 0.9375rem !important; }

    .danger-box {
      background: linear-gradient(135deg, #FEF2F2 0%, #FFF1F2 100%);
      border: 1.5px solid #FECACA; border-radius: var(--radius);
      padding: 1.25rem 1.5rem; margin: 1.75rem 0;
      border-left: 4px solid #DC2626;
    }
    .danger-box p { color: #7F1D1D !important; margin: 0 !important; font-size: 0.9375rem !important; }

    /* NEWSLETTER CTA */
    .newsletter-cta {
      background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal) 100%);
      border-radius: var(--radius); padding: 2.5rem 2rem;
      margin: 3rem 0; text-align: center; position: relative; overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .newsletter-cta::before {
      content: '';
      position: absolute; top: -30px; left: -30px;
      width: 200px; height: 200px;
      background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
      pointer-events: none;
    }
    .newsletter-cta h3 {
      color: var(--white) !important; font-size: 1.375rem; font-weight: 800;
      margin-bottom: 0.5rem; letter-spacing: -0.025em;
    }
    .newsletter-cta p { color: rgba(255,255,255,0.82) !important; font-size: 1rem; margin-bottom: 1.5rem; }
    .newsletter-form { display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: center; position: relative; }
    .newsletter-form input {
      flex: 1; min-width: 200px; padding: 0.8rem 1.1rem;
      border-radius: 10px; border: none; font-size: 0.9375rem;
      outline: none; font-family: inherit;
      box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    }
    .newsletter-form button {
      background: var(--navy); color: var(--white); font-weight: 800; font-size: 0.9375rem;
      padding: 0.8rem 1.75rem; border-radius: 10px; border: none; cursor: pointer;
      font-family: inherit; transition: all .2s; letter-spacing: 0.01em;
    }
    .newsletter-form button:hover { background: #0A1E3C; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.25); }

    /* RELATED */
    .related-section h3 {
      font-size: 1.125rem; font-weight: 800; color: var(--navy);
      margin-bottom: 1rem; letter-spacing: -0.02em;
    }
    .related-grid { display: flex; flex-direction: column; gap: 0.75rem; }
    .related-card {
      display: flex; align-items: center; gap: 1rem;
      background: var(--gray-50); border: 1.5px solid var(--gray-200);
      border-radius: var(--radius); padding: 1rem 1.25rem; transition: all .2s;
      box-shadow: var(--shadow-sm);
    }
    .related-card:hover { border-color: var(--teal); background: var(--teal-bg); transform: translateX(4px); box-shadow: var(--shadow-md); }
    .related-emoji { font-size: 1.5rem; flex-shrink: 0; }
    .related-body { flex: 1; min-width: 0; }
    .related-cat { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--teal-dark); }
    .related-title { font-size: 0.9375rem; font-weight: 700; color: var(--navy); margin-top: 0.125rem; }
    .related-arrow { color: var(--gray-400); font-size: 1rem; flex-shrink: 0; transition: all .2s; }
    .related-card:hover .related-arrow { color: var(--teal); transform: translateX(2px); }

    /* FOOTER */
    footer {
      background: var(--navy); color: rgba(255,255,255,0.45); text-align: center;
      padding: 2.5rem 1.5rem; border-top: 1px solid rgba(255,255,255,0.06);
      margin-top: 0;
    }
    .footer-logo {
      display: inline-flex; align-items: center; gap: 0.5rem;
      font-size: 1rem; font-weight: 800; color: var(--white); margin-bottom: 0.75rem;
      letter-spacing: -0.02em;
    }
    .footer-logo-icon {
      width: 28px; height: 28px;
      background: linear-gradient(135deg, var(--teal), var(--teal-dark));
      border-radius: 7px;
      display: flex; align-items: center; justify-content: center; font-size: 0.8125rem;
    }
    .footer-copy { font-size: 0.8125rem; color: rgba(255,255,255,0.3); margin-top: 0.5rem; }

    /* QUICK ANSWER BOX */
    .quick-answer-box {
      background: linear-gradient(135deg, #F0FDFF 0%, #E0F7FA 100%);
      border: 2px solid rgba(8,145,178,0.3); border-left: 5px solid var(--teal);
      border-radius: var(--radius); padding: 1.5rem 1.75rem; margin-bottom: 2.5rem;
      box-shadow: 0 2px 12px rgba(8,145,178,0.08);
    }
    .qa-header {
      display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem;
    }
    .qa-icon { font-size: 1.125rem; }
    .qa-label {
      font-size: 0.7rem; font-weight: 800; text-transform: uppercase;
      letter-spacing: 0.07em; color: var(--teal-dark);
    }
    .qa-content { font-size: 1rem; color: #0C4A6E; line-height: 1.75; }
    .qa-content strong { color: var(--teal-dark); font-weight: 700; }

    /* FAQ SECTION */
    .faq-section { margin-top: 3.5rem; }
    .faq-section-title {
      font-size: 1.5rem; font-weight: 800; color: var(--navy);
      letter-spacing: -0.03em; margin-bottom: 1.5rem; padding-bottom: 0.75rem;
      border-bottom: 2px solid var(--gray-100); position: relative;
    }
    .faq-section-title::after {
      content: ''; position: absolute; bottom: -2px; left: 0;
      width: 3rem; height: 2px;
      background: linear-gradient(90deg, var(--teal), var(--teal-light));
    }
    .faq-list { display: flex; flex-direction: column; gap: 0; }
    .faq-item { border-bottom: 1px solid var(--gray-100); }
    .faq-question {
      width: 100%; background: none; border: none; text-align: left;
      padding: 1.125rem 0; cursor: pointer; font-family: inherit;
      display: flex; align-items: center; justify-content: space-between; gap: 1rem;
      font-size: 1rem; font-weight: 700; color: var(--navy); line-height: 1.35;
      transition: color .2s;
    }
    .faq-question:hover { color: var(--teal-dark); }
    .faq-chevron {
      font-size: 1rem; color: var(--teal); flex-shrink: 0;
      transition: transform 0.25s; display: inline-block;
    }
    .faq-item.open .faq-chevron { transform: rotate(180deg); }
    .faq-answer {
      display: none; padding: 0 0 1.25rem;
      font-size: 0.9375rem; color: var(--gray-600); line-height: 1.8;
    }
    .faq-answer strong { color: var(--navy); }
    .faq-item.open .faq-answer { display: block; }

    /* RESPONSIVE */
    @media (max-width: 960px) {
      .article-layout { grid-template-columns: 1fr; gap: 0; }
      .toc-sidebar { position: static; display: none; }
      .article-hero::after { display: none; }
    }
    @media (max-width: 600px) {
      .article-hero { padding: 3.5rem 1rem 2.75rem; }
      .article-layout { padding: 1.5rem 1rem; }
      .newsletter-cta { padding: 1.75rem 1.25rem; }
      .wisdom-callout { padding: 1.5rem; }
    }

    /* ===== QUICK-ANSWER BOX (upgraded) ===== */
    .quick-answer-box {
      background: linear-gradient(135deg, rgba(8,145,178,0.07) 0%, rgba(16,185,129,0.05) 100%);
      border: 1.5px solid rgba(8,145,178,0.25);
      border-left: 4px solid var(--teal, #0891B2);
      border-radius: 0.875rem;
      padding: 1.5rem 1.75rem;
      margin-bottom: 2.5rem;
    }
    .qa-header {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      margin-bottom: 1rem;
    }
    .qa-icon { font-size: 1.4rem; line-height: 1; }
    .qa-label {
      font-size: 0.72rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--teal, #0891B2);
    }
    .qa-headline {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--navy, #0f172a);
      margin-top: 0.1rem;
    }
    .qa-facts {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.65rem;
    }
    .qa-fact {
      display: flex;
      align-items: flex-start;
      gap: 0.45rem;
      font-size: 0.875rem;
      color: #334155;
      line-height: 1.45;
    }
    .qa-fact::before {
      content: "✓";
      color: #10B981;
      font-weight: 800;
      flex-shrink: 0;
      margin-top: 0.05rem;
    }
    @media (max-width: 600px) {
      .qa-facts { grid-template-columns: 1fr; }
    }

    @keyframes goldShimmer {
      0% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
      100% { background-position: 0% 50%; }
    }