:root{
  --bg:#f4f4f1;
  --bg-accent:#e8edf5;
  --card:#fffdf8;
  --text:#131a22;
  --muted:#5e6673;
  --ring:#d8dde5;
  --accent:#18253a;
  --accent-soft:rgba(24,37,58,.08);
  --shadow:0 18px 50px rgba(17,24,39,.08);
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#0e1319;
    --bg-accent:#182230;
    --card:#121923;
    --text:#e8edf3;
    --muted:#9aa4b2;
    --ring:#273242;
    --accent:#f5f7fa;
    --accent-soft:rgba(245,247,250,.08);
    --shadow:0 18px 50px rgba(0,0,0,.28);
  }
}

*{box-sizing:border-box}

html{color-scheme:light dark}

body{
  margin:0;
  min-height:100vh;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top, var(--bg-accent), transparent 45%),
    var(--bg);
}

a{color:inherit}

.page-shell{
  width:min(960px,92vw);
  margin:0 auto;
  padding:48px 0;
}

.card{
  background:var(--card);
  border:1px solid var(--ring);
  border-radius:24px;
  box-shadow:var(--shadow);
  padding:32px;
}

.page-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:28px;
}

.eyebrow,
.kicker{
  margin:0 0 12px;
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--muted);
}

.route{
  margin:0;
  font-size:clamp(2rem,5vw,4rem);
  line-height:.95;
  letter-spacing:-.04em;
}

.page-title{
  margin:0;
  font-size:clamp(1.8rem,4vw,3rem);
  line-height:1;
  letter-spacing:-.03em;
}

.lead{
  max-width:44rem;
  margin:16px 0 0;
  font-size:1.02rem;
  line-height:1.6;
  color:var(--muted);
}

.nav{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

.chip{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:10px 16px;
  border-radius:999px;
  border:1px solid var(--ring);
  background:transparent;
  text-decoration:none;
  transition:transform .08s ease, border-color .2s ease, background .2s ease;
}

.chip:hover,
.chip:focus-visible,
.tile:hover,
.tile:focus-visible{
  transform:translateY(-1px);
  border-color:var(--accent);
  outline:none;
}

.chip.active{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--card);
}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:16px;
}

.tile{
  display:block;
  min-height:100%;
  padding:24px;
  border:1px solid var(--ring);
  border-radius:20px;
  background:linear-gradient(180deg, var(--accent-soft), transparent 70%);
  text-decoration:none;
  transition:transform .08s ease, border-color .2s ease, background .2s ease;
}

.tile h2{
  margin:0 0 12px;
  font-size:1.35rem;
  line-height:1.15;
}

.tile h2:last-child{
  margin-bottom:0;
}

.tile p{
  margin:0;
  color:var(--muted);
  line-height:1.6;
}

footer{
  margin-top:20px;
  font-size:.92rem;
  color:var(--muted);
}

@media (max-width:640px){
  .page-shell{padding:24px 0}
  .card{padding:24px}
  .page-header{margin-bottom:24px}
}