:root { --primary: #06b6d4; --accent: #8b5cf6; }
    body { font-family: system-ui, sans-serif; }
    .utility-bar { background: #164e63; padding: 0.4rem 2rem; display: flex; gap: 1.5rem; font-size: 0.85rem; flex-wrap: wrap; }
    .utility-bar a { color: #a5f3fc; text-decoration: none; }
    .utility-bar a:hover { color: #fff; }
    .site-header { background: var(--primary); color: #fff; padding: 1.2rem 2rem; display: flex; align-items: center; gap: 1rem; }
    .site-header .brand { font-size: 1.5rem; font-weight: bold; color: #fff; text-decoration: none; }
    .site-header .tagline { font-size: 0.9rem; opacity: 0.85; }
    nav.main-nav { background: #0e7490; padding: 0.5rem 2rem; display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
    nav.main-nav a { color: #e0f2fe; text-decoration: none; padding: 0.35rem 0.8rem; border-radius: 4px; font-size: 0.9rem; }
    nav.main-nav a:hover { background: var(--primary); color: #fff; }
    .container { max-width: 960px; margin: 2rem auto; padding: 0 1rem; }
    .section-toc { background: #ecfeff; border-left: 4px solid var(--primary); padding: 1rem 1.5rem; margin: 1.5rem 0; border-radius: 0 8px 8px 0; }
    .section-toc h3 { margin: 0 0 0.5rem; color: var(--primary); font-size: 0.95rem; }
    .section-toc ol { margin: 0; padding-left: 1.2rem; }
    .fact-panel { background: #ecfeff; border: 1px solid var(--primary); border-radius: 8px; padding: 1rem 1.5rem; margin: 1rem 0; }
    .seq-nav { display: flex; justify-content: space-between; align-items: center; background: #f0f9ff; border: 1px solid var(--primary); border-radius: 8px; padding: 0.8rem 1.5rem; margin: 2rem 0; flex-wrap: wrap; gap: 0.5rem; }
    .seq-btn { background: var(--primary); color: #fff; padding: 0.4rem 1rem; border-radius: 4px; text-decoration: none; font-size: 0.9rem; }
    .seq-btn:hover { background: #0891b2; }
    .seq-btn-home { color: var(--accent); text-decoration: none; font-size: 0.9rem; font-weight: bold; }
    table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
    th { background: var(--primary); color: #fff; padding: 0.6rem 1rem; text-align: left; }
    td { padding: 0.5rem 1rem; border-bottom: 1px solid #e5e7eb; }
    tr:nth-child(even) td { background: #f0f9ff; }
    details summary { cursor: pointer; font-weight: bold; color: var(--primary); padding: 0.5rem 0; }
    .checklist li { list-style: none; padding: 0.3rem 0; }
    .checklist li::before { content: "✓ "; color: var(--accent); font-weight: bold; }
    #form-errors { background: #fee2e2; color: #991b1b; padding: 0.8rem; border-radius: 6px; display: none; margin-bottom: 1rem; }
    .cookie-banner { position: fixed; bottom: 0; left: 0; right: 0; background: #164e63; color: #fff; padding: 1rem 2rem; display: none; align-items: center; justify-content: space-between; gap: 1rem; z-index: 999; }
    .cookie-banner button { background: var(--primary); border: none; color: #fff; padding: 0.5rem 1.2rem; border-radius: 4px; cursor: pointer; }
    footer.site-footer { background: #164e63; color: #a5f3fc; padding: 2rem; margin-top: 3rem; }
    footer.site-footer a { color: var(--accent); }
    footer.site-footer .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
    .review-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
    .review-card { background: #fff; border: 1px solid #e5e7eb; border-radius: 10px; padding: 1.5rem; }
    .star { color: var(--primary); }
    .hero-section { background: linear-gradient(135deg, #ecfeff, #f5f3ff); border-radius: 12px; padding: 2rem; margin-bottom: 2rem; text-align: center; }
    .hero-section h1 { color: var(--primary); }
    .btn-primary { background: var(--primary); color: #fff; padding: 0.5rem 1.2rem; border-radius: 4px; text-decoration: none; font-size: 0.9rem; display: inline-block; margin: 0.3rem; }
    .btn-accent { background: var(--accent); color: #fff; padding: 0.5rem 1.2rem; border-radius: 4px; text-decoration: none; font-size: 0.9rem; display: inline-block; margin: 0.3rem; }
    aside.info-box { background: #f5f3ff; border-left: 4px solid var(--accent); padding: 1rem 1.5rem; border-radius: 0 8px 8px 0; margin: 1.5rem 0; }
    blockquote { border-left: 4px solid var(--primary); padding: 0.8rem 1.5rem; background: #ecfeff; border-radius: 0 8px 8px 0; font-style: italic; }
    .breadcrumb { font-size: 0.85rem; color: #6b7280; margin-bottom: 1rem; }
    .breadcrumb a { color: var(--primary); }
    .casebook-note { background: #fef9c3; border-left: 4px solid #f59e0b; padding: 0.8rem 1.2rem; border-radius: 0 6px 6px 0; margin: 1rem 0; font-size: 0.9rem; }
    .casebook-note strong { color: #92400e; }