:root {
  color-scheme: light dark;
  --mint: #08b88a;
  --mint-dark: #08745c;
  --ink: #12231e;
  --muted: #597069;
  --paper: #f5fbf8;
  --card: rgba(255, 255, 255, 0.92);
  --line: rgba(8, 116, 92, 0.2);
  --warning: #8a4b00;
  --warning-bg: #fff3dc;
}

* { box-sizing: border-box; }
html { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(circle at 80% 0%, rgba(8, 184, 138, 0.18), transparent 34rem), var(--paper);
  line-height: 1.6;
}
a { color: var(--mint-dark); text-underline-offset: 0.18em; }
a:focus-visible { outline: 3px solid var(--mint); outline-offset: 3px; border-radius: 4px; }
.skip-link { position: fixed; z-index: 10; top: 0.5rem; left: 0.5rem; padding: 0.65rem 0.85rem; border-radius: 0.5rem; background: var(--ink); color: var(--paper); font-weight: 750; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); background: rgba(245, 251, 248, 0.9); backdrop-filter: blur(14px); }
.nav, main, .site-footer { width: min(70rem, calc(100% - 2rem)); margin-inline: auto; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 0; }
.brand { color: var(--ink); font-size: 1.2rem; font-weight: 800; text-decoration: none; }
.nav-links { display: flex; flex-wrap: wrap; gap: 0.9rem; font-size: 0.94rem; }
.nav-links a { color: var(--ink); text-decoration: none; }
main { padding: clamp(2.5rem, 7vw, 6rem) 0; }
.hero { max-width: 52rem; }
.eyebrow { color: var(--mint-dark); font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
h1 { font-size: clamp(2.35rem, 7vw, 4.8rem); line-height: 1.02; letter-spacing: -0.045em; margin: 0.35rem 0 1rem; }
h2 { margin-top: 2.5rem; line-height: 1.2; }
h3 { margin-top: 1.8rem; }
.lead { color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.3rem); max-width: 48rem; }
.meta { color: var(--muted); font-size: 0.92rem; }
.notice { margin: 1.75rem 0; padding: 1rem 1.15rem; border: 1px solid #edbb6b; border-radius: 0.9rem; color: var(--warning); background: var(--warning-bg); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin: 2rem 0; }
.card { display: block; padding: 1.3rem; border: 1px solid var(--line); border-radius: 1.1rem; background: var(--card); color: var(--ink); text-decoration: none; box-shadow: 0 12px 36px rgba(10, 58, 46, 0.06); }
.card:hover { border-color: var(--mint); transform: translateY(-1px); }
.card h2, .card h3 { margin: 0 0 0.35rem; }
.card p { margin: 0; color: var(--muted); }
.content { max-width: 50rem; }
.content li + li { margin-top: 0.45rem; }
.content section { scroll-margin-top: 5rem; }
.button { display: inline-block; margin-top: 0.5rem; padding: 0.75rem 1rem; border-radius: 0.75rem; background: var(--mint-dark); color: white; font-weight: 750; text-decoration: none; }
.site-footer { padding: 1.5rem 0 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 1rem; }
@media (max-width: 42rem) { .nav { align-items: flex-start; flex-direction: column; } .nav-links { gap: 0.7rem; } }
@media (prefers-color-scheme: dark) {
  :root { --ink: #edf9f5; --muted: #afc7bf; --paper: #08130f; --card: rgba(17, 37, 31, 0.9); --line: rgba(99, 222, 183, 0.23); --mint-dark: #63deb7; --warning: #ffd291; --warning-bg: #3a280d; }
  .site-header { background: rgba(8, 19, 15, 0.9); }
}