*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --bg: #fdf8f7; --text: #1a1412; --accent: #FF9AA2; --secondary: #a29bfe;
      --muted: #4a3f3a; --card-border: #ffe4e6; --radius: 1.25rem;
      --font-body: 'Nunito', sans-serif; --font-heading: 'Playfair Display', serif;
    }
    html { scroll-behavior: smooth; }
    body { background: var(--bg); color: var(--text); font-family: var(--font-body); font-size: 1.0625rem; line-height: 1.75; }
    #progress-bar { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: linear-gradient(135deg, #FF9AA2, #a29bfe); z-index: 1000; transition: width 0.1s linear; }
    .nav { position: sticky; top: 0; z-index: 100; background: rgba(253,248,247,0.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--card-border); }
    .nav-inner { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; height: 64px; display: flex; align-items: center; justify-content: space-between; }
    .nav-logo { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-heading); font-size: 1.2rem; font-weight: 700; color: var(--text); text-decoration: none; }
    .nav-links { display: flex; align-items: center; gap: 1.5rem; }
    .nav-link { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 0.9rem; transition: color 0.2s; }
    .nav-link:hover { color: var(--accent); }
    .nav-cta { background: linear-gradient(135deg, #FF9AA2, #a29bfe); color: white; padding: 0.5rem 1.1rem; border-radius: 2rem; text-decoration: none; font-weight: 700; font-size: 0.875rem; transition: opacity 0.2s; }
    .nav-cta:hover { opacity: 0.88; }
    @media (max-width: 700px) { .nav-links { gap: 0.75rem; } .nav-link { display: none; } }
    .hero { background: linear-gradient(135deg, #fff0f1 0%, #f0eeff 100%); padding: 3.5rem 1.5rem 3rem; text-align: center; }
    .breadcrumb { font-size: 0.82rem; color: var(--muted); margin-bottom: 1.25rem; }
    .breadcrumb a { color: var(--muted); text-decoration: none; } .breadcrumb a:hover { color: var(--accent); }
    .hero h1 { font-family: var(--font-heading); font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 700; color: var(--text); max-width: 780px; margin: 0 auto 1rem; line-height: 1.25; }
    .byline { color: var(--muted); font-size: 0.875rem; font-weight: 600; }
    .snippet { background: #f0fff4; border-left: 4px solid #34d399; border-radius: 0.75rem; padding: 1.25rem 1.5rem; margin: 2rem auto; max-width: 780px; font-size: 0.975rem; }
    .snippet strong { display: block; margin-bottom: 0.4rem; color: #065f46; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }
    .container { max-width: 780px; margin: 0 auto; padding: 2.5rem 1.5rem 4rem; }
    h2 { font-family: var(--font-heading); font-size: clamp(1.35rem, 3vw, 1.75rem); font-weight: 700; margin: 2.5rem 0 1rem; color: var(--text); }
    h3 { font-family: var(--font-heading); font-size: 1.15rem; font-weight: 600; margin: 1.75rem 0 0.6rem; color: var(--text); }
    p { margin-bottom: 1.1rem; }
    a { color: var(--accent); }
    ul, ol { margin: 0.75rem 0 1.1rem 1.5rem; }
    li { margin-bottom: 0.4rem; }
    .callout { border-radius: 0.875rem; padding: 1.25rem 1.5rem; margin: 1.75rem 0; }
    .callout-warning { background: #fff7ed; border-left: 4px solid #fb923c; }
    .callout-info { background: #eff6ff; border-left: 4px solid #60a5fa; }
    .callout-green { background: #f0fff4; border-left: 4px solid #34d399; }
    .callout-title { font-weight: 700; font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.4rem; }
    .callout-warning .callout-title { color: #c2410c; }
    .callout-info .callout-title { color: #1d4ed8; }
    .callout-green .callout-title { color: #065f46; }
    .table-wrap { overflow-x: auto; margin: 1.5rem 0; }
    table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
    th { background: linear-gradient(135deg, #FF9AA2, #a29bfe); color: white; padding: 0.65rem 1rem; text-align: left; font-weight: 700; }
    td { padding: 0.65rem 1rem; border-bottom: 1px solid var(--card-border); vertical-align: top; }
    tr:nth-child(even) td { background: #fdf4f5; }
    .faq-section { margin: 3rem 0; }
    .faq-section h2 { margin-bottom: 1.25rem; }
    details { border: 1px solid var(--card-border); border-radius: 0.875rem; margin-bottom: 0.75rem; overflow: hidden; }
    summary { padding: 1rem 1.25rem; font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: '+'; font-size: 1.25rem; color: var(--accent); transition: transform 0.2s; }
    details[open] summary::after { transform: rotate(45deg); }
    details[open] summary { color: var(--accent); }
    .faq-body { padding: 0 1.25rem 1rem; color: var(--muted); }
    .cta-box { background: linear-gradient(135deg, #FF9AA2, #a29bfe); border-radius: var(--radius); padding: 2.5rem 2rem; text-align: center; color: white; margin: 3rem 0; }
    .cta-box h3 { font-family: var(--font-heading); font-size: 1.5rem; margin-bottom: 0.75rem; color: white; }
    .cta-box p { margin-bottom: 1.25rem; opacity: 0.92; }
    .cta-btn { display: inline-block; background: white; color: var(--text); font-weight: 700; padding: 0.75rem 2rem; border-radius: 2rem; text-decoration: none; font-size: 1rem; transition: opacity 0.2s; }
    .cta-btn:hover { opacity: 0.88; color: var(--text); }
    .related { margin: 3rem 0; }
    .related h2 { font-size: 1.25rem; margin-bottom: 1rem; }
    .related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
    .related-card { background: white; border: 1px solid var(--card-border); border-radius: var(--radius); padding: 1.1rem 1.25rem; text-decoration: none; color: var(--text); font-weight: 600; font-size: 0.9rem; transition: border-color 0.2s, transform 0.2s; display: block; }
    .related-card:hover { border-color: var(--accent); transform: translateY(-2px); color: var(--text); }
    .related-tag { font-size: 0.75rem; color: var(--muted); font-weight: 400; margin-top: 0.25rem; }
    .sources { border-top: 1px solid var(--card-border); margin-top: 3rem; padding-top: 1.5rem; }
    .sources h3 { font-size: 1rem; margin-bottom: 0.75rem; color: var(--muted); }
    .sources ol { font-size: 0.82rem; color: var(--muted); }
    footer { background: #1a1412; color: #a8998f; text-align: center; padding: 2rem 1.5rem; font-size: 0.82rem; }
    footer a { color: #a8998f; text-decoration: none; margin: 0 0.5rem; }
    footer a:hover { color: var(--accent); }
    #back-to-top { position: fixed; bottom: 2rem; right: 2rem; background: linear-gradient(135deg, #FF9AA2, #a29bfe); color: white; border: none; border-radius: 50%; width: 44px; height: 44px; font-size: 1.25rem; cursor: pointer; opacity: 0; transition: opacity 0.3s; display: flex; align-items: center; justify-content: center; z-index: 90; }
    #back-to-top.visible { opacity: 1; }
    .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.55s ease, transform 0.55s ease; }
    .reveal.visible { opacity: 1; transform: none; }
    .trimester-badge { display: inline-block; background: linear-gradient(135deg, #FF9AA2, #a29bfe); color: white; border-radius: 0.5rem; padding: 0.2rem 0.65rem; font-size: 0.78rem; font-weight: 700; margin-bottom: 0.35rem; }
    .test-card { border: 1px solid var(--card-border); border-radius: 0.875rem; padding: 1.1rem 1.25rem; margin-bottom: 1rem; background: white; }
    .test-card h4 { font-family: var(--font-heading); font-size: 1rem; font-weight: 700; margin-bottom: 0.35rem; color: var(--text); }
    .test-meta { font-size: 0.82rem; color: var(--muted); margin-bottom: 0.4rem; }
      /* Dropdowns */
    .nav-dd { position: relative; }
    .nav-dd-menu { display: none; position: absolute; top: calc(100% + 4px); left: 0; background: white; border: 1px solid #f0e8e6; border-radius: 1rem; padding: 0.5rem; min-width: 240px; box-shadow: 0 8px 32px rgba(0,0,0,0.1); z-index: 200; }
    .nav-dd:hover .nav-dd-menu { display: block; }
    .nav-dd-item { display: block; padding: 0.5rem 0.75rem; font-size: 0.8rem; font-weight: 600; color: #1a1412; text-decoration: none; border-radius: 0.5rem; }
    .nav-dd-item:hover { background: #fdf0f1; }
    .nav-dd-sep { height: 1px; background: #f0e8e6; margin: 0.25rem 0.5rem; }
    .nav-sign-in { padding: 0.375rem 0.625rem; border-radius: 0.75rem; font-size: 0.75rem; font-weight: 600; color: #64748b; text-decoration: none; }
    .nav-sign-in:hover { background: #f5f0ef; }