/* Shared CSS for V1 internal pages — matches main site palette and animation system */
:root {
  --bg: #FFFFFF;
  --bg-soft: #F5F4EF;
  --bg-card: #F2F1EC;
  --bg-card-2: #E9E8E3;
  --ink: #0A0A0A;
  --ink-2: #1A1A1A;
  --muted: #6B6B6B;
  --dim: #A8A8A8;
  --hair: #00000010;
  --hair-strong: #00000022;
  --accent: #EA0A23;
  --accent-deep: #C00819;
  --sans: "Onest", system-ui, sans-serif;
  --serif: "Source Serif 4", serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { background: var(--bg); color: var(--ink); }
body {
  font-family: var(--sans); font-weight: 400; -webkit-font-smoothing: antialiased;
  line-height: 1.55; font-size: 16px; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 80;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(14px) saturate(180%);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  border-bottom: 1px solid var(--hair);
  padding: 16px 24px;
  display: flex; justify-content: space-between; align-items: center;
}
.nav-left { display: flex; align-items: center; gap: 20px; min-width: 0; }
.logo-serif { font-family: var(--serif); font-weight: 700; font-size: 32px; letter-spacing: -0.01em; line-height: 1; color: var(--ink); }
.logo-serif .dot { color: var(--accent); }
.crumbs { font-family: var(--mono); font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { color: var(--dim); margin: 0 8px; }
.pill {
  padding: 10px 18px; border-radius: 999px;
  font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  border: 1px solid var(--hair-strong); color: var(--ink); white-space: nowrap;
  transition: border-color .25s, color .25s;
}
.pill:hover { border-color: var(--accent); color: var(--accent); }
.pill.solid { background: var(--ink); color: #fff; border-color: var(--ink); }
.pill.solid:hover { background: var(--accent); border-color: var(--accent); }

/* layout */
.shell { max-width: 1320px; margin: 0 auto; padding: 0 32px; }
section { padding: 96px 0; border-bottom: 1px solid var(--hair); position: relative; }
section:last-of-type { border-bottom: 0; }
.sec-num {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 22px;
}
.sec-num::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
}

/* hero */
.page-hero {
  padding: 132px 0 64px;
  background:
    radial-gradient(900px 480px at 18% 28%, rgba(234,10,35,0.08), transparent 60%),
    radial-gradient(700px 480px at 88% 76%, rgba(234,10,35,0.05), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--hair);
}
.page-hero h1 {
  font-family: var(--sans); font-weight: 500;
  font-size: clamp(44px, 6vw, 84px);
  letter-spacing: -0.035em; line-height: 1.05;
  max-width: 24ch;
}
.page-hero h1 .brackets { color: var(--accent); white-space: nowrap; }
.page-hero .lead {
  margin-top: 24px; font-size: clamp(18px, 1.6vw, 22px);
  color: var(--muted); line-height: 1.5; max-width: 56ch;
}

/* typography */
h2 {
  font-family: var(--sans); font-weight: 500;
  font-size: clamp(32px, 4vw, 56px);
  letter-spacing: -0.03em; line-height: 1.05;
}
h2 .brackets { color: var(--accent); white-space: nowrap; }
h3 { font-family: var(--sans); font-weight: 500; font-size: 22px; letter-spacing: -0.02em; line-height: 1.25; }
.upper-mono { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.body { font-size: 16px; line-height: 1.6; color: var(--ink-2); }
.muted { color: var(--muted); }

/* card grid */
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) { .g4 { grid-template-columns: repeat(2,1fr); } .g3 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 720px) { .g4, .g3, .g2 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-card); border: 1px solid var(--hair-strong);
  border-radius: 20px; padding: 28px;
  transition: border-color .35s, transform .35s, box-shadow .35s;
}
.card.lift:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 12px 28px rgba(234,10,35,0.08); }
.card.dark { background: var(--ink); color: #fff; border-color: rgba(255,255,255,0.08); }
.card.accent { background: var(--accent); color: #fff; border-color: var(--accent); }

.chip {
  display: inline-block; padding: 6px 12px; border-radius: 999px;
  background: rgba(0,0,0,0.05); border: 1px solid var(--hair-strong);
  font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-2);
}
.chip.red { background: rgba(234,10,35,0.08); border-color: rgba(234,10,35,0.3); color: var(--accent); }
.chip.dark { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.2); color: #fff; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px;
  font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em;
  transition: background .25s, color .25s, transform .2s;
}
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-deep); transform: translateY(-2px); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--accent); }
.btn-outline { border: 1px solid var(--hair-strong); color: var(--ink); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* reveal */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2,.8,.2,1), transform .9s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.stagger > * { opacity: 0; transform: translateY(20px); transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }
.stagger.in > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.05s; }
.stagger.in > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.10s; }
.stagger.in > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.15s; }
.stagger.in > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.20s; }
.stagger.in > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.25s; }
.stagger.in > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 0.30s; }
.stagger.in > *:nth-child(7) { opacity: 1; transform: none; transition-delay: 0.35s; }
.stagger.in > *:nth-child(8) { opacity: 1; transform: none; transition-delay: 0.40s; }
.stagger.in > *:nth-child(9) { opacity: 1; transform: none; transition-delay: 0.45s; }
.stagger.in > *:nth-child(10) { opacity: 1; transform: none; transition-delay: 0.50s; }
.stagger.in > *:nth-child(11) { opacity: 1; transform: none; transition-delay: 0.55s; }
.stagger.in > *:nth-child(12) { opacity: 1; transform: none; transition-delay: 0.60s; }

/* dark footer */
footer.site-foot { background: var(--ink); color: #F1EFEA; padding: 60px 0 32px; font-family: var(--mono); font-size: 13px; line-height: 1.7; }
footer.site-foot .row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
@media (max-width: 720px) { footer.site-foot .row { grid-template-columns: 1fr; } }
footer.site-foot h4 { font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; color: rgba(241,239,234,0.5); font-weight: 400; margin-bottom: 12px; }
footer.site-foot a { color: #F1EFEA; }
footer.site-foot a:hover { color: var(--accent); }
footer.site-foot .legal-row {
  margin-top: 36px; padding-top: 20px; border-top: 1px solid rgba(241,239,234,0.18);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 11px; color: rgba(241,239,234,0.55); text-transform: uppercase; letter-spacing: 0.08em;
}

/* ============== scroll-to-top button ============== */
.scroll-top {
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
  border: 0; cursor: pointer;
  opacity: 0; transform: translateY(20px) scale(0.85); pointer-events: none;
  transition: opacity .3s, transform .3s, background .25s;
  box-shadow: 0 8px 20px rgba(0,0,0,0.18);
}
.scroll-top:hover { background: var(--accent); }
.scroll-top.show { opacity: 1; transform: none; pointer-events: auto; }

/* responsive */
@media (max-width: 720px) {
  .nav { padding: 14px 18px; }
  .crumbs { display: none; }
  .shell { padding: 0 18px; }
  section { padding: 64px 0; }
  .page-hero { padding: 96px 0 48px; }
  .card { padding: 22px; }
  h2 { font-size: 28px; }
}