:root {
  --bg: #F4F5F7; --surface: #FFFFFF; --ink: #14161B; --muted: #5B6270; --line: #DDE0E6; --accent: #334DA1; --green: #5E9A1E;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0E1014; --surface: #171A21; --ink: #EEF0F4; --muted: #9AA1AE; --line: #2A2F3A; --accent: #9DB0F2; --green: #A6D86A; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: 'Outfit', system-ui, -apple-system, sans-serif; line-height: 1.55; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

header { padding: 26px 0; display: flex; align-items: center; gap: 14px; }
.brand { display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--ink); font-weight: 600; font-size: 15px; }
.brand:hover { text-decoration: none; }
.brand img { width: 64px; height: auto; display: block; }
header nav { margin-left: auto; display: flex; gap: 28px; font-size: 15px; font-weight: 500; }
header nav a { color: var(--ink); }

main { padding: 64px 0 32px; }
.hero { max-width: 760px; margin: 0 auto; text-align: center; }
.hero img { width: 120px; height: auto; margin: 0 auto 28px; display: block; }
h1 { font-size: clamp(36px, 6vw, 64px); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 18px; font-weight: 700; }
.lede { font-size: 19px; color: var(--muted); max-width: 580px; margin: 0 auto; }
.section-title { font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin: 72px 0 18px; text-align: center; }

.cards { display: grid; gap: 16px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card p { max-width: 640px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 28px; display: flex; gap: 20px; align-items: flex-start; }
.card.featured { grid-column: 1 / -1; padding: 36px; gap: 28px; align-items: center; }
.card.featured h3 { font-size: 28px; letter-spacing: -0.02em; }
.card.featured p { font-size: 17px; max-width: 640px; }
.card h3 { margin: 0 0 4px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .links { margin-top: 10px; font-size: 14px; }
.tile { width: 64px; height: 64px; flex: none; border-radius: 15px; background: #fff; border: 1px solid #DDE1E6; display: grid; place-items: center; }
.featured .tile { width: 96px; height: 96px; border-radius: 22px; }
.sudoku { border: 2px solid #14161B; grid-template-columns: repeat(3, 1fr); padding: 6px; font-size: 11px; color: #9AA1AE; font-weight: 600; }
.sudoku b { width: 18px; height: 18px; border-radius: 50%; background: #2450D3; color: #fff; display: grid; place-items: center; font-size: 11px; }
.pill { display: inline-block; margin-top: 10px; font-size: 12px; font-weight: 600; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 3px 10px; border-radius: 999px; }
.pill.green { color: var(--green); background: color-mix(in srgb, var(--green) 14%, transparent); }

.contact { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 28px; text-align: center; }
.contact span { color: var(--muted); font-size: 15px; display: block; margin-bottom: 4px; }
.contact a { font-size: 18px; font-weight: 500; }

footer { border-top: 1px solid var(--line); margin-top: 72px; padding: 24px 0 40px; color: var(--muted); font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

.doc { max-width: 760px; margin: 0 auto; padding: 40px 0 16px; }
.doc h1 { font-size: clamp(32px, 5vw, 44px); }
.doc h2 { font-size: 22px; letter-spacing: -0.01em; margin: 40px 0 10px; }
.doc h3 { font-size: 18px; margin: 24px 0 6px; }
.doc p, .doc li { font-size: 16px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc .meta { color: var(--muted); font-size: 14px; margin: 0 0 24px; }

@media (max-width: 640px) {
  header nav { display: none; }
  .cards { grid-template-columns: 1fr; }
  .card, .card.featured { flex-direction: column; align-items: flex-start; padding: 24px; }
  .card.featured h3 { font-size: 24px; }
}