/* Winter HQ shared styles: tokens, nav, and the components every section reuses.
   Pages add their own <style> for page-specific pieces. */
:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --ink: #0f1f33;
  --muted: #5a6b80;
  --line: #dbe4ee;
  --navy: #10233f;
  --hero-ink: #f2f7fc;
  --hero-muted: #a9bdd4;
  --glacier: #2c78b8;
  --glacier-fill: #7fb6e2;
  --glacier-soft: #e3eff9;
  --gold: #a86d05;
  --gold-fill: #f2bd4e;
  --gold-soft: #fcf1d8;
  --good: #23784a;
  --good-soft: #e0f2e7;
  --warn: #b4321f;
  --warn-soft: #fbe5e1;
  --display: "Archivo", "Arial Narrow", system-ui, sans-serif;
  --body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  --radius: 10px;
  /* Winter-sky surfaces for heroes and feature panels (light theme only, by design) */
  --sky: linear-gradient(180deg, #b9d6f0 0%, #d7e8f7 48%, #eef5fc 100%);
  --sky-panel: linear-gradient(160deg, #e4f0fb 0%, #f4f9fe 100%);
  --sky-line: #c4dbef;
  --frost: rgba(255, 255, 255, 0.72);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 16px; line-height: 1.6; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--glacier); }
:focus-visible { outline: 3px solid var(--gold-fill); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.08; text-wrap: balance; margin: 0; }
h2 { font-size: clamp(1.55rem, 3.4vw, 2.1rem); font-weight: 800; font-stretch: 82%; }
h3 { font-size: 1.15rem; font-weight: 750; font-stretch: 92%; }
p { margin: 0; max-width: 68ch; }
.small { font-size: 0.87rem; }
.muted { color: var(--muted); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }

/* ---------- Site nav ---------- */
.site-nav { position: sticky; top: 0; z-index: 1000; background: rgba(250, 252, 255, 0.88); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); color: var(--ink); border-bottom: 1px solid var(--line); }
.site-nav .in { max-width: 960px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; gap: 18px; height: 52px; }
.site-nav .brand { display: flex; align-items: center; gap: 9px; color: var(--navy); text-decoration: none; font-family: var(--display); font-weight: 850; font-stretch: 75%; font-size: 1.2rem; text-transform: uppercase; letter-spacing: 0.02em; white-space: nowrap; }
.site-nav .brand svg { width: 22px; height: 22px; flex: none; }
.site-nav ul { list-style: none; margin: 0 0 0 auto; padding: 0; display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.site-nav ul::-webkit-scrollbar { display: none; }
.site-nav a.lnk { display: block; color: var(--muted); text-decoration: none; font-size: 0.9rem; font-weight: 600; padding: 6px 11px; border-radius: 99px; white-space: nowrap; }
.site-nav a.lnk:hover { color: var(--ink); background: var(--glacier-soft); }
.site-nav a.lnk[aria-current="page"] { color: #fff; background: var(--glacier); }
@media (max-width: 560px) {
  .site-nav .in { padding: 0 12px; gap: 10px; }
  .site-nav .brand span { display: none; }
  .site-nav a.lnk { padding: 6px 9px; font-size: 0.85rem; }
}

/* ---------- Shared layout ---------- */
.wrap { max-width: 960px; margin: 0 auto; padding-inline: 20px; padding-block: 24px 72px; display: flex; flex-direction: column; gap: 48px; }
@media (max-width: 520px) { .wrap { padding-inline: 16px; gap: 40px; } }
section { display: flex; flex-direction: column; gap: 18px; scroll-margin-top: 64px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; min-width: 0; }
.kicker { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold); font-weight: 600; }
.page-head { display: flex; flex-direction: column; gap: 10px; }
.page-head h1 { font-size: clamp(2.2rem, 6vw, 3.6rem); font-weight: 880; font-stretch: 70%; text-transform: uppercase; }
.page-head p { font-size: 1.08rem; color: var(--muted); }
.btn { font: 600 0.92rem var(--body); background: var(--navy); color: var(--hero-ink); border: 1px solid transparent; border-radius: 99px; padding: 9px 16px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.btn:hover { filter: brightness(1.15); }
.btn.ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn.gold { background: var(--gold-fill); color: var(--navy); }
.chip { font: 600 0.82rem var(--body); background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 99px; padding: 6px 12px; cursor: pointer; white-space: nowrap; }
.chip[aria-pressed="true"] { background: var(--navy); color: var(--hero-ink); border-color: var(--navy); }
.tag { display: inline-block; font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 2px 8px; border-radius: 99px; font-weight: 600; background: var(--glacier-soft); color: var(--glacier); }
.tag.gold { background: var(--gold-soft); color: var(--gold); }
.tag.good { background: var(--good-soft); color: var(--good); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }
.note { font-size: 0.85rem; color: var(--muted); }
.site-foot { max-width: 960px; margin: 0 auto; padding: 24px 20px 48px; font-size: 0.82rem; color: var(--muted); border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
.site-foot a { color: var(--muted); }
.skeleton { background: linear-gradient(90deg, var(--line) 0%, var(--bg) 50%, var(--line) 100%); background-size: 200% 100%; animation: sk 1.4s infinite linear; border-radius: 6px; }
@keyframes sk { from { background-position: 200% 0; } to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .skeleton { animation: none; } }