/* CALCULIER — the app's own palette, so the site and the product feel like
   one thing. Values taken straight from Theme.swift. */
:root {
  --ground:#DDE7F5;
  --card:#F6F9FC;
  --field:#E3ECF8;
  --line:#CDDAEC;
  --ink:#1E293B;
  --ink-muted:#64748B;
  --ink-faint:#8B9BB1;
  --plays:#2578E5;
  --adjust:#F1821B;
  --final:#16A34A;
  --radius:14px;
  --shadow:0 1px 2px rgba(30,41,59,.06), 0 6px 20px rgba(30,41,59,.06);
}

*, *::before, *::after { box-sizing:border-box; }

html { -webkit-text-size-adjust:100%; }

body {
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

.wrap { max-width:1060px; margin:0 auto; padding:0 20px; }
.narrow { max-width:720px; }

a { color:var(--plays); }
a:hover { text-decoration:none; }

/* ---------- masthead ---------- */
header.top {
  display:flex; align-items:center; justify-content:space-between;
  gap:20px; padding:22px 0; flex-wrap:wrap;
}
.brand { display:flex; align-items:center; gap:12px; text-decoration:none; color:var(--ink); }
.brand img { width:42px; height:42px; border-radius:10px; display:block; }
.brand strong { font-size:19px; font-weight:800; letter-spacing:-.01em; }
nav.top a {
  color:var(--ink-muted); text-decoration:none; font-size:15px; font-weight:500;
  margin-left:22px;
}
nav.top a:hover { color:var(--ink); }

/* ---------- hero ---------- */
.hero { padding:44px 0 20px; display:grid; grid-template-columns:1fr; gap:26px; }
.hero h1 {
  font-size:clamp(34px, 5.4vw, 54px); line-height:1.06; margin:0 0 14px;
  font-weight:800; letter-spacing:-.025em; text-wrap:balance;
}
.hero p.lede {
  font-size:clamp(17px, 2.1vw, 21px); color:var(--ink-muted); margin:0;
  max-width:60ch; text-wrap:pretty;
}
.hero-icon { width:96px; height:96px; border-radius:22px; box-shadow:var(--shadow); display:block; margin-bottom:22px; }

.cta { display:flex; gap:12px; flex-wrap:wrap; margin-top:26px; align-items:center; }
.btn {
  display:inline-block; text-decoration:none; font-weight:600; font-size:16px;
  padding:13px 24px; border-radius:11px;
}
.btn-primary { background:var(--plays); color:#fff; }
.btn-primary:hover { filter:brightness(1.08); }
.btn-quiet { background:var(--field); color:var(--ink); border:1px solid var(--line); }
.note { font-size:14px; color:var(--ink-faint); }

/* ---------- shot ---------- */
figure.shot { margin:38px 0 0; }
figure.shot img {
  width:100%; height:auto; display:block;
  border-radius:var(--radius); box-shadow:var(--shadow); border:1px solid var(--line);
}
figure.shot figcaption { font-size:14px; color:var(--ink-faint); margin-top:10px; }

/* ---------- sections ---------- */
section { padding:52px 0; }
section h2 {
  font-size:clamp(24px, 3.2vw, 32px); font-weight:700; letter-spacing:-.02em;
  margin:0 0 14px; text-wrap:balance;
}
section p { color:var(--ink-muted); max-width:66ch; }
section p strong { color:var(--ink); font-weight:600; }

.divider { height:1px; background:var(--line); border:0; margin:0; }

/* ---------- worked example ---------- */
.example {
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:24px; box-shadow:var(--shadow); max-width:640px;
}
.example .row { display:flex; justify-content:space-between; gap:16px; padding:9px 0; align-items:baseline; }
.example .row + .row { border-top:1px solid var(--line); }
.example .k { color:var(--ink-muted); font-size:15px; }
.example .v { font-variant-numeric:tabular-nums; font-weight:700; font-size:19px; }
.v-plays { color:var(--plays); }
.v-adjust { color:var(--adjust); }
.v-final { color:var(--final); }

/* ---------- features ---------- */
.grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(250px,1fr)); gap:16px; margin-top:26px; }
.tile {
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:20px; box-shadow:var(--shadow);
}
.tile h3 { margin:0 0 6px; font-size:17px; font-weight:700; }
.tile p { margin:0; font-size:15px; color:var(--ink-muted); }

/* ---------- prose pages ---------- */
.prose h1 { font-size:clamp(28px,4vw,40px); font-weight:800; letter-spacing:-.02em; margin:34px 0 8px; }
.prose h2 { font-size:20px; font-weight:700; margin:32px 0 8px; }
.prose p, .prose li { color:var(--ink-muted); }
.prose li { margin-bottom:6px; }
.prose .updated { font-size:14px; color:var(--ink-faint); margin-top:0; }
.prose .lang { font-size:13px; color:var(--ink-faint); text-transform:uppercase; letter-spacing:.08em; font-weight:600; margin-top:46px; }

/* ---------- footer ---------- */
footer {
  border-top:1px solid var(--line); margin-top:40px; padding:28px 0 56px;
  font-size:14px; color:var(--ink-faint);
}
footer nav a { color:var(--ink-muted); text-decoration:none; margin-right:20px; }
footer nav a:hover { color:var(--ink); }
footer .legal { margin-top:14px; line-height:1.7; }

@media (prefers-reduced-motion: reduce) { * { transition:none !important; } }

/* ---------- language switch ---------- */
.langswitch {
  display:inline-flex; border:1px solid var(--line); border-radius:8px;
  overflow:hidden; margin-left:22px; vertical-align:middle;
}
.langswitch a {
  font-size:13px; font-weight:600; letter-spacing:.03em; text-decoration:none;
  padding:5px 10px; color:var(--ink-muted); background:var(--card);
}
.langswitch a[aria-current="true"] { background:var(--ink); color:var(--card); }
.langswitch a:hover:not([aria-current="true"]) { color:var(--ink); }