:root {
  --ink: #122033;
  --muted: #586779;
  --line: #dce5ed;
  --surface: #f4f7f9;
  --surface-strong: #eaf1f5;
  --brand: #0b6b67;
  --brand-dark: #064b48;
  --accent: #f4a261;
  --white: #fff;
  --max: 1120px;
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-size: 1rem; line-height: 1.65; }
a { color: var(--brand); text-underline-offset: .16em; }
a:hover { color: var(--brand-dark); }
.wrap { width: min(100% - 2.25rem, var(--max)); margin-inline: auto; }
.reading { width: min(100% - 2.25rem, 780px); margin-inline: auto; }
.skip-link { position: absolute; left: -9999px; top: 0; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 50; padding: .7rem 1rem; background: var(--white); }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(220,229,237,.9); background: rgba(255,255,255,.96); backdrop-filter: blur(12px); }
.nav-shell { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); font-weight: 850; letter-spacing: -.03em; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--brand); color: var(--white); font-weight: 900; }
.nav-links { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: .35rem 1rem; }
.nav-links a { color: #33455a; font-size: .9rem; font-weight: 650; text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--brand); }
main { min-height: 65vh; }
.hero { padding: 6.5rem 0 4.5rem; background: linear-gradient(135deg, #eff8f5 0%, #fff 58%, #fff3e7 100%); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 3.5rem; align-items: center; }
.eyebrow { margin: 0 0 .85rem; color: var(--brand); font-size: .78rem; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.035em; }
h1 { max-width: 850px; margin: 0 0 1.25rem; font-size: clamp(2.45rem, 6.5vw, 5rem); }
h2 { margin: 3.3rem 0 1rem; font-size: clamp(1.65rem, 3.6vw, 2.55rem); }
h3 { margin: 1.5rem 0 .55rem; font-size: 1.25rem; }
p { margin: 0 0 1rem; }
.lede { max-width: 760px; color: var(--muted); font-size: clamp(1.12rem, 2.4vw, 1.4rem); }
.hero-note { padding: 1.6rem; border: 1px solid #cfe2dc; border-radius: 18px; background: rgba(255,255,255,.82); box-shadow: 0 14px 40px rgba(18,32,51,.08); }
.hero-note p:last-child { margin-bottom: 0; }
.button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.7rem; }
.button, .cta { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .75rem 1.05rem; border: 1px solid var(--brand); border-radius: 10px; background: var(--brand); color: var(--white); font-weight: 800; text-decoration: none; }
.button:hover, .cta:hover { background: var(--brand-dark); color: var(--white); }
.button.secondary { background: transparent; color: var(--brand); }
.section { padding: 4.5rem 0; }
.section.alt { background: var(--surface); border-block: 1px solid var(--line); }
.section-heading { max-width: 720px; margin-bottom: 2rem; }
.section-heading h2 { margin-top: 0; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.15rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { display: flex; flex-direction: column; padding: 1.35rem; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: 0 8px 24px rgba(18,32,51,.04); }
.card h2, .card h3 { margin-top: 0; }
.card p { color: var(--muted); }
.card-link { margin-top: auto; font-weight: 800; text-decoration: none; }
.tag { display: inline-flex; width: fit-content; margin-bottom: .8rem; padding: .25rem .55rem; border-radius: 999px; background: #e5f3ef; color: var(--brand-dark); font-size: .76rem; font-weight: 800; }
.page-hero { padding: 4.5rem 0 2.8rem; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #f4faf8, #fff); }
.page-hero h1 { font-size: clamp(2.25rem, 5.5vw, 4.25rem); }
.breadcrumbs { margin-bottom: 1rem; color: var(--muted); font-size: .88rem; }
.breadcrumbs a { color: var(--muted); }
.article { padding: 3.5rem 0 5rem; }
.article h2 { padding-top: .4rem; }
.article h3 { margin-top: 2rem; }
.article ul, .article ol { padding-left: 1.35rem; }
.article li + li { margin-top: .5rem; }
.callout { margin: 1.7rem 0; padding: 1.25rem 1.35rem; border-left: 4px solid var(--brand); border-radius: 0 12px 12px 0; background: var(--surface); }
.callout.warning { border-left-color: var(--accent); }
.disclosure { margin: 1.7rem 0; padding: 1rem 1.15rem; border: 1px solid #cfe2dc; border-radius: 12px; background: #f0f8f5; color: #405161; font-size: .92rem; }
.comparison { width: 100%; margin: 1.6rem 0 2rem; border-collapse: collapse; font-size: .94rem; }
.comparison th, .comparison td { padding: .85rem .75rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.comparison th { background: var(--surface-strong); }
.comparison tr:nth-child(even) td { background: #fafcfd; }
.table-scroll { overflow-x: auto; }
.checklist { padding: 1.25rem 1.35rem; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.meta, .note, .fine-print { color: var(--muted); font-size: .88rem; }
.site-footer { padding: 2.6rem 0; border-top: 1px solid var(--line); background: #102333; color: #dbe6ed; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 2fr; gap: 2rem; }
.footer-title { margin-bottom: .5rem; color: var(--white); font-weight: 850; }
.footer-links { display: flex; flex-wrap: wrap; gap: .55rem 1rem; align-content: start; }
.footer-links a { color: #dbe6ed; font-size: .88rem; }
.footer-copy { margin-top: 1.2rem; color: #aebcc7; font-size: .82rem; }
@media (max-width: 900px) { .hero-grid, .footer-grid { grid-template-columns: 1fr; } .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .hero { padding-top: 4.5rem; } }
@media (max-width: 680px) { .wrap, .reading { width: min(100% - 1.35rem, var(--max)); } .nav-shell { align-items: flex-start; padding-block: .8rem; } .nav-links { max-width: 70%; gap: .25rem .7rem; } .nav-links a { font-size: .78rem; } .hero { padding: 3.8rem 0 3rem; } .grid, .grid.two { grid-template-columns: 1fr; } .section { padding: 3.25rem 0; } .article { padding-top: 2.4rem; } .comparison { min-width: 640px; } .button, .cta { width: 100%; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }