/* aihiocore.fi – KKH Technologies -brändi (Aihio Coren tokenit), vaalea teema, järjestelmäfontit. */
:root {
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;
  --canvas: #f7f7f4;
  --surface: #ffffff;
  --sunk: #e8eae1;
  --line: #e2e4dc;
  --ink: #14202a;
  --muted: #4a5a64;
  --accent: #3e5e00;
  --accent-fill: #7dae00;
  --accent-soft: #e9f2cf;
  --accent-line: #c3d693;
  --board: #0b100c;
  --board-ink: #edf3e8;
  --board-muted: #a9b8a0;
  --board-accent: #cdeb1c;
  --r-sm: 11px;
  --r-md: 16px;
  --r-lg: 22px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 16px/1.55 var(--sans); }
a { color: var(--accent); }
.leveys { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
header.yla { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--canvas) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
header.yla .leveys { display: flex; align-items: center; gap: 16px; height: 56px; }
.merkki { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .01em; color: var(--ink); text-decoration: none; }
.merkki img { width: 28px; height: 28px; }
nav.valikko { margin-left: auto; display: flex; gap: 18px; align-items: center; font-size: 14px; }
nav.valikko a { color: var(--muted); text-decoration: none; }
nav.valikko a:hover { color: var(--ink); }
nav.valikko .kieli { border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; }
.sanka { padding-top: 72px; padding-bottom: 56px; }
.sanka h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.12; letter-spacing: -.02em; margin: 0 0 18px; max-width: 18ch; }
.sanka p.johdanto { font-size: 18px; color: var(--muted); max-width: 60ch; margin: 0 0 28px; }
.napit { display: flex; flex-wrap: wrap; gap: 10px; }
.nappi { display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 20px; border-radius: var(--r-sm); font-weight: 600; text-decoration: none; border: 1px solid var(--line); background: var(--surface); color: var(--ink); }
.nappi.ensi { background: var(--board); color: var(--board-ink); border-color: var(--board); }
.nappi.ensi:hover { background: #1c2619; }
.nappi:focus-visible, a:focus-visible { outline: 2px solid var(--accent-fill); outline-offset: 2px; }
.huom { display: inline-block; font-size: 13px; color: var(--accent); background: var(--accent-soft); border: 1px solid var(--accent-line); border-radius: 999px; padding: 3px 12px; margin-bottom: 18px; }
section { padding: 48px 0; border-top: 1px solid var(--line); }
section h2 { font-size: 26px; letter-spacing: -.01em; margin: 0 0 8px; }
section p.selite { color: var(--muted); margin: 0 0 28px; max-width: 62ch; }
.ruudukko { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.kortti { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); padding: 20px; }
.kortti h3 { font-size: 17px; margin: 0 0 6px; }
.kortti p { margin: 0; color: var(--muted); font-size: 15px; }
.kortti ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 15px; }
.tumma { background: var(--board); color: var(--board-ink); border-radius: var(--r-lg); padding: 32px; }
.tumma h2 { color: var(--board-ink); }
.tumma p { color: var(--board-muted); }
.tumma .nappi { background: var(--board-accent); color: var(--board); border-color: var(--board-accent); }
.alat { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.alat li { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: 14px; }
.perhe { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.perhe .kortti b { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: .04em; text-transform: uppercase; display: block; margin-bottom: 6px; }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer .leveys { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
@media (max-width: 640px) {
  nav.valikko a:not(.kieli) { display: none; }
  .sanka { padding-top: 48px; padding-bottom: 40px; }
  .tumma { padding: 24px 20px; }
}