/* Margin website. Light, quiet, typographic; motion follows scroll. */


:root {
  --sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --text-font: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --serif: var(--sans);
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --bg: #fbfaf7;
  --bg-2: #f3f1ec;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --ink-3: #a1a1a6;
  --line: rgba(0, 0, 0, 0.08);
  --line-2: rgba(0, 0, 0, 0.14);
  --amber: #f2a93b;
  --amber-ink: #b86e0c;
  --mark: rgba(242, 169, 59, 0.24);
  --night: #0c0c0d;
  --night-ink: #f5f5f7;
  --night-ink-2: #a1a1a6;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-xl: 0 40px 80px -20px rgba(60, 40, 10, 0.22), 0 18px 36px -18px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 14px 36px rgba(0, 0, 0, 0.14), 0 2px 8px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.05);
  --gutter: clamp(16px, 4vw, 40px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 64px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.5 var(--text-font); letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
kbd {
  display: inline-block; min-width: 22px; padding: 1px 6px; margin: 0 1px; border-radius: 6px;
  border: 1px solid var(--line-2); border-bottom-width: 2px; background: var(--surface);
  font: 600 13px/1.4 var(--text-font); text-align: center; color: var(--ink-2); vertical-align: 1px;
}
code { font: 0.9em var(--mono); background: var(--bg-2); padding: 2px 6px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 6px; }

/* ---------- Type ---------- */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px; font: 600 14px/1.2 var(--sans); letter-spacing: 0; color: var(--amber-ink); }
.eyebrow i { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 4px var(--mark); }
.h2 { margin: 0; font: 700 clamp(36px, 5.6vw, 64px)/1.04 var(--sans); letter-spacing: -0.035em; text-wrap: balance; }
.sub { margin: 20px 0 0; max-width: 620px; font-size: clamp(18px, 1.9vw, 21px); line-height: 1.5; color: var(--ink-2); letter-spacing: -0.015em; text-wrap: pretty; }
.fine { margin: 18px 0 0; font-size: 14px; color: var(--ink-3); letter-spacing: 0; }
.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-head { max-width: 980px; margin: 0 auto; padding: 0 var(--gutter); text-align: center; }
.section-head .sub { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 26px; border-radius: 12px;
  font: 600 17px/1 var(--sans); letter-spacing: -0.01em; text-decoration: none;
  transition: transform 300ms var(--ease), background 200ms, box-shadow 300ms var(--ease);
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; }
.btn-ghost { border: 1px solid var(--line-2); background: var(--surface); }
.btn-ghost:hover { background: var(--bg-2); }
.btn.is-soon { cursor: default; opacity: 0.9; }
.btn.is-soon:hover { transform: none; }
.btn-link { font: 500 17px/1 var(--sans); color: var(--amber-ink); text-decoration: none; }
.btn-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px 28px; margin-top: 34px; }

/* ---------- Nav ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; height: 52px; transition: background 300ms, box-shadow 300ms; }
.nav.scrolled { background: rgba(251, 250, 247, 0.72); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); box-shadow: 0 1px 0 var(--line); }
.nav-in { max-width: 1080px; height: 100%; margin: 0 auto; padding: 0 var(--gutter); display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; font: 600 17px/1 var(--sans); letter-spacing: -0.02em; }
.brand img { width: 22px; height: 22px; border-radius: 6px; }
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a { font: 400 14px/1 var(--sans); color: var(--ink-2); text-decoration: none; letter-spacing: 0; transition: color 200ms; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { height: 30px; padding: 0 14px; display: inline-flex; align-items: center; border-radius: 8px; background: var(--ink); color: #fff; text-decoration: none; font: 600 13px/1 var(--sans); letter-spacing: 0; transition: transform 300ms var(--ease); }
.nav-cta:active { transform: scale(0.96); }
@media (max-width: 720px) { .nav-links { display: none; } .nav-cta { margin-left: auto; } }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(116px, 16vh, 168px) var(--gutter) 0; text-align: center; overflow: hidden; }
.hero-title { margin: 0 auto; max-width: 1000px; font: 700 clamp(52px, 10.4vw, 128px)/0.98 var(--sans); letter-spacing: -0.05em; }
.hero-title .w { display: inline-block; opacity: 0; transform: translateY(0.32em); filter: blur(14px); animation: word-in 1.1s var(--ease) forwards; animation-delay: calc(var(--d) * 90ms + 120ms); }
.hero-title .hl { position: relative; }
.hero-title .hl::after {
  content: ""; position: absolute; left: -0.04em; right: -0.04em; bottom: 0.08em; height: 0.3em; z-index: -1; border-radius: 0.06em;
  background: var(--mark); transform-origin: left; transform: scaleX(0); animation: grow 0.9s var(--ease) forwards; animation-delay: 1.15s;
}
.hero-in { opacity: 0; transform: translateY(16px); animation: fade-up 1s var(--ease) forwards; animation-delay: calc(var(--d) * 90ms + 200ms); }
.lede { max-width: 640px; margin: 30px auto 0; font-size: clamp(19px, 2.2vw, 24px); line-height: 1.42; color: var(--ink-2); letter-spacing: -0.02em; text-wrap: balance; }
@keyframes word-in { to { opacity: 1; transform: none; filter: blur(0); } }
@keyframes fade-up { to { opacity: 1; transform: none; } }
@keyframes grow { to { transform: scaleX(1); } }

.hero-stage { perspective: 1800px; margin: clamp(56px, 9vh, 88px) auto 0; max-width: 1040px; padding-bottom: clamp(60px, 10vh, 120px); }
.hero-stage .window {
  transform-origin: 50% 0;
  transform: translateY(var(--hy, 0px)) rotateX(var(--hr, 18deg)) scale(var(--hs, 0.9));
  opacity: 0; animation: fade-up 1.2s var(--ease) 0.9s forwards;
  will-change: transform;
}

/* ---------- Browser window mock ---------- */
.window { position: relative; background: var(--surface); border-radius: 16px; box-shadow: var(--shadow-xl); text-align: left; }
.win-bar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 42px; padding: 0 16px; border-bottom: 1px solid var(--line); background: #fcfbf9; border-radius: 16px 16px 0 0; }
.dots { display: flex; gap: 7px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; background: #e3e0da; }
.url { justify-self: center; min-width: 0; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 5px 16px; border-radius: 8px; background: var(--bg-2); font: 500 12.5px/1 var(--text-font); color: var(--ink-2); letter-spacing: 0; }
.doc { position: relative; padding: clamp(24px, 4.5vw, 52px) clamp(20px, 6vw, 72px) clamp(32px, 5vw, 60px); font: 400 clamp(16px, 1.7vw, 19px)/1.7 var(--text-font); color: #232220; letter-spacing: 0; }
.doc p { margin: 0 0 1em; }
.doc-kicker { font: 500 12px/1 var(--mono) !important; letter-spacing: 0.04em !important; text-transform: uppercase; color: #8a847a; margin-bottom: 14px !important; }
.doc-title { margin: 0 0 22px; font: 600 clamp(26px, 3.4vw, 38px)/1.12 var(--sans); letter-spacing: -0.03em; }

/* Margin's underline */
mark.u, .t.on, .demo-doc .saved {
  color: inherit; border-radius: 3px; padding: 0 1px; margin: 0 -1px;
  text-decoration: underline dotted var(--amber); text-decoration-thickness: 2px; text-underline-offset: 4px;
}
mark.u { background: linear-gradient(var(--mark), var(--mark)) 0 0 / 0% 100% no-repeat; text-decoration-color: transparent; animation: mark-in 0.9s var(--ease) forwards; animation-delay: calc(1.6s + var(--i) * 0.16s); }
@keyframes mark-in { to { background-size: 100% 100%; text-decoration-color: var(--amber); } }

/* Margin's cards */
.card { position: absolute; z-index: 3; width: min(340px, 86%); padding: 14px 16px 12px; border-radius: 14px; background: #fff; box-shadow: var(--shadow-card); font: 400 14px/1.45 var(--text-font); color: var(--ink); letter-spacing: 0; }
.card-head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 4px; }
.term { font: 600 18px/1.2 var(--sans); letter-spacing: -0.02em; }
.chip { margin-left: auto; display: inline-flex; align-items: center; gap: 5px; height: 21px; padding: 0 8px; border-radius: 999px; background: var(--bg-2); color: var(--ink-2); font: 600 11px/1 var(--text-font); white-space: nowrap; }
.chip i { width: 6px; height: 6px; border-radius: 50%; }
.card-def { margin: 0 !important; font: 400 14px/1.5 var(--text-font) !important; color: var(--ink); }
.card-meta { display: flex; justify-content: space-between; gap: 12px; margin-top: 9px; font: 500 12px/1.3 var(--text-font); color: var(--ink-3); }
.card-meta span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hero-card { left: clamp(16px, 30%, 320px); bottom: clamp(-30px, -2vw, -10px); opacity: 0; transform: translateY(10px) scale(0.97); animation: pop 0.7s var(--ease) 3.1s forwards; }
@keyframes pop { to { opacity: 1; transform: none; } }
@media (max-width: 600px) { .hero-card { left: 12px; right: 12px; width: auto; bottom: -24px; } .hero-stage { padding-bottom: 72px; } }

/* ---------- Statement (scroll-scrubbed words) ---------- */
.statement { padding: clamp(72px, 12vh, 140px) var(--gutter) clamp(24px, 6vh, 72px); }
.scrub-text { max-width: 1000px; margin: 0 auto; font: 700 clamp(30px, 4.8vw, 58px)/1.14 var(--sans); letter-spacing: -0.035em; text-wrap: pretty; }
.scrub-text .sw { opacity: var(--o, 0.14); transition: opacity 120ms linear; }

/* ---------- How it works ---------- */
.how { padding: 0 var(--gutter); }
.how-grid { max-width: 1120px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 88px); }
.how-steps { padding: 0; }
.step { min-height: 78vh; display: flex; flex-direction: column; justify-content: center; opacity: 0.22; transition: opacity 500ms var(--ease); }
.step.active { opacity: 1; }
.step .eyebrow { margin-bottom: 26px; }
.step .num { font: 600 15px/1 var(--mono); color: var(--amber-ink); margin-bottom: 16px; }
.step h2 { margin: 0; font: 700 clamp(34px, 4.4vw, 52px)/1.05 var(--sans); letter-spacing: -0.035em; }
.step p { margin: 18px 0 0; font-size: clamp(17px, 1.7vw, 20px); line-height: 1.55; color: var(--ink-2); max-width: 460px; }
.how-stage-wrap { position: relative; }
.how-stage { position: sticky; top: 0; height: 100vh; display: flex; align-items: center; }
.how-stage .window { width: 100%; }
.how-stage .doc { min-height: 540px; font-size: clamp(16px, 1.6vw, 18px); }
.t { border-radius: 3px; padding: 0 1px; margin: 0 -1px; transition: background 400ms var(--ease), text-decoration-color 400ms; text-decoration: underline dotted transparent; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.how-stage[data-active="1"] .heap1, .how-stage[data-active="2"] .heap1 { background: #b8d6fb; }
.how-stage[data-active="3"] .t { background: var(--mark); text-decoration-color: var(--amber); }
.pill {
  position: absolute; z-index: 3; display: inline-flex; align-items: center; gap: 7px; height: 32px; padding: 0 12px 0 9px; border: 0; border-radius: 999px;
  background: var(--ink); color: #fff; font: 600 13px/1 var(--text-font); letter-spacing: 0; box-shadow: 0 8px 22px rgba(0, 0, 0, 0.22); pointer-events: none;
  opacity: 0; transform: translateY(6px) scale(0.96); transition: opacity 350ms var(--ease), transform 450ms var(--ease);
}
.pill svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.pill kbd { background: transparent; border-color: rgba(255, 255, 255, 0.35); color: rgba(255, 255, 255, 0.75); font-size: 11px; min-width: 0; }
.how-stage[data-active="1"] .pill { opacity: 1; transform: none; }
.save-card, .tip-card { opacity: 0; transform: translateY(12px) scale(0.97); transition: opacity 450ms var(--ease), transform 600ms var(--ease); pointer-events: none; }
.how-stage[data-active="2"] .save-card, .how-stage[data-active="3"] .tip-card { opacity: 1; transform: none; }
.save-card { width: min(360px, 92%); padding: 14px; }
.save-head { display: flex; align-items: center; gap: 8px; font: 600 13px/1 var(--text-font); margin-bottom: 12px; }
.logo { width: 15px; height: 15px; border-radius: 4px; background: var(--ink); position: relative; }
.logo::after { content: ""; position: absolute; left: 3px; right: 3px; bottom: 3px; height: 2px; border-radius: 1px; background: var(--amber); }
.field { padding: 6px 10px; border: 1px solid var(--line-2); border-radius: 8px; font: 600 16px/1.3 var(--serif); }
.def-row { display: flex; align-items: center; justify-content: space-between; margin: 12px 0 8px; font: 600 11.5px/1 var(--text-font); color: var(--ink-2); }
.seg { display: inline-flex; padding: 2px; border-radius: 8px; background: var(--bg-2); }
.seg b { padding: 5px 9px; border-radius: 6px; font-weight: 600; color: var(--ink-2); }
.seg b.on { background: #fff; color: var(--ink); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 0 0 0.5px var(--line); }
.sugg { display: block; padding: 7px 10px; margin-bottom: 6px; border: 1px solid var(--line); border-radius: 8px; font: 400 12.5px/1.4 var(--text-font); color: var(--ink); }
.sugg .src { display: block; font: 600 10.5px/1.4 var(--text-font); color: var(--ink-3); margin-bottom: 1px; }
.sugg .src b { color: var(--amber-ink); }
.sugg.on { border-color: var(--amber); box-shadow: 0 0 0 3px var(--mark); }
.save-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; }
.course { font: 500 12px/1 var(--text-font); color: var(--ink-2); padding: 6px 10px; border: 1px solid var(--line-2); border-radius: 7px; }
.btn-mini { padding: 7px 14px; border-radius: 7px; background: var(--ink); color: #fff; font: 600 12.5px/1 var(--text-font); }

@media (max-width: 900px) {
  .how-grid { display: block; }
  .how-stage-wrap { position: sticky; top: 52px; z-index: 2; height: auto; }
  .how-stage { position: relative; height: auto; padding: 12px 0; background: linear-gradient(var(--bg) 85%, transparent); }
  .how-stage .doc { min-height: 300px; font-size: 15px; padding: 20px; }
  .how-steps { padding: 0 0 20vh; }
  .step { min-height: 60vh; justify-content: flex-start; padding-top: 6vh; }
}

/* ---------- Try it ---------- */
.try { padding: clamp(80px, 12vh, 140px) 0 clamp(60px, 10vh, 120px); background: linear-gradient(var(--bg), var(--bg-2)); }
.demo-key { padding: 0 2px; border-radius: 3px; text-underline-offset: 4px; text-decoration-thickness: 2px; color: var(--ink); }
.demo-key.saved { background: var(--mark); text-decoration: underline dotted var(--amber); text-decoration-thickness: 2px; }
.demo-key.cand { text-decoration: underline dotted var(--ink-3); text-decoration-thickness: 2px; }
.demo { max-width: 860px; margin: 48px auto 0; padding: 0 var(--gutter); }
.demo-tabs { display: flex; justify-content: center; gap: 4px; width: max-content; max-width: 100%; margin: 0 auto 20px; padding: 4px; border-radius: 999px; background: rgba(0, 0, 0, 0.05); }
.demo-tabs button { display: inline-flex; align-items: center; gap: 7px; height: 34px; padding: 0 16px; border: 0; border-radius: 999px; background: transparent; cursor: pointer; font: 500 14px/1 var(--sans); color: var(--ink-2); letter-spacing: 0; transition: background 300ms var(--ease), color 200ms, box-shadow 300ms; }
.demo-tabs button i { width: 7px; height: 7px; border-radius: 50%; }
.demo-tabs button[aria-selected="true"] { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12); }
.demo-window { min-height: 360px; }
.demo-doc { min-height: 300px; transition: opacity 250ms; }
.demo-doc.fading { opacity: 0; }
.demo-doc .saved, .demo-doc .cand { display: inline; cursor: pointer; border: 0; background: none; padding: 0 1px; margin: 0 -1px; font: inherit; line-height: inherit; letter-spacing: inherit; text-align: inherit; color: inherit; border-radius: 3px; }
.demo-doc .saved { background: var(--mark); }
.demo-doc .saved.just { animation: just 1.2s var(--ease); }
@keyframes just { 0% { background: rgba(242, 169, 59, 0.75); } 100% { background: var(--mark); } }
.demo-doc .cand { text-decoration: underline dotted #b9b4ab; text-decoration-thickness: 2px; text-underline-offset: 4px; transition: background 200ms; }
.demo-doc .cand:hover, .demo-doc .cand.open { background: #e6e1d6; }
.demo-card { opacity: 0; transform: translateY(8px) scale(0.97); transition: opacity 250ms var(--ease), transform 400ms var(--ease); pointer-events: none; }
.demo-card.show { opacity: 1; transform: none; pointer-events: auto; }
.demo-card[role="tooltip"].show { pointer-events: none; }
.demo-save .sugg { cursor: pointer; transition: border-color 150ms, box-shadow 150ms; }
.demo-save .sugg:hover { border-color: var(--line-2); }
.demo-save .seg b { cursor: pointer; }
.demo-save textarea { display: block; width: 100%; min-height: 70px; resize: none; padding: 7px 10px; border: 1px solid var(--line-2); border-radius: 8px; font: 400 13px/1.45 var(--text-font); color: var(--ink); background: #fff; }
.demo-save textarea:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px var(--mark); }
.demo-save .btn-mini { border: 0; cursor: pointer; }
.demo-save .x { margin-left: auto; border: 0; background: none; cursor: pointer; color: var(--ink-3); font-size: 18px; line-height: 1; padding: 0 2px; }
.demo-status { margin: 16px 0 0; text-align: center; font: 500 14px/1.4 var(--sans); color: var(--ink-2); letter-spacing: 0; }
.demo-status b { color: var(--ink); }
.toast { position: fixed; left: 50%; bottom: 28px; z-index: 60; transform: translate(-50%, 20px); opacity: 0; padding: 12px 18px; border-radius: 14px; background: var(--ink); color: #fff; font: 500 14px/1.3 var(--text-font); letter-spacing: 0; box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28); transition: opacity 300ms var(--ease), transform 500ms var(--ease); pointer-events: none; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Bento ---------- */
.sources { padding: clamp(100px, 16vh, 170px) 0; background: var(--bg-2); }
.bento { max-width: 1080px; margin: 56px auto 0; padding: 0 var(--gutter); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.tile { padding: 28px; border-radius: 26px; background: var(--surface); box-shadow: 0 0 0 1px var(--line); }
.tile-wide { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; }
.tile-k { margin: 0 0 18px; font: 600 15px/1.3 var(--sans); color: var(--ink-2); letter-spacing: -0.01em; }
.map { list-style: none; margin: auto 0 0; padding: 0; display: grid; gap: 10px; }
.map li { display: grid; grid-template-columns: 96px 28px 1fr; align-items: center; padding: 12px 14px; border-radius: 14px; background: var(--bg); font-size: 15px; }
.map .code { font: 700 14px/1 var(--sans); letter-spacing: 0; }
.map .arrow { height: 1px; background: var(--amber); position: relative; }
.map .arrow::after { content: ""; position: absolute; right: -1px; top: -3px; border: 3.5px solid transparent; border-left: 5px solid var(--amber); }
.map .srcs { padding-left: 10px; color: var(--ink-2); line-height: 1.35; }
.stat { container-type: inline-size; display: flex; flex-direction: column; justify-content: space-between; min-height: 190px; }
.stat .big { margin: 0; font: 700 min(64px, 32cqi)/1 var(--sans); letter-spacing: -0.04em; color: var(--amber-ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
.stat p:last-child { margin: 18px 0 0; font-size: 15px; line-height: 1.4; color: var(--ink-2); }
.stat.dark { background: var(--night); box-shadow: none; }
.stat.dark .big { background: none; color: #fff; }
.stat.dark p:last-child { color: var(--night-ink-2); }
@media (max-width: 860px) {
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile-wide { grid-column: 1 / -1; grid-row: auto; }
}
@media (max-width: 520px) {
  .map li { grid-template-columns: 1fr; gap: 6px; }
  .map .arrow { display: none; }
  .map .srcs { padding-left: 0; }
  .tile { padding: 22px; }
  .stat { min-height: 150px; }
  .stat-wide { grid-column: 1 / -1; min-height: 0; gap: 18px; }
}

/* ---------- PDF (dark) ---------- */
.pdf { padding: clamp(100px, 16vh, 170px) 0 clamp(90px, 14vh, 150px); background: var(--night); color: var(--night-ink); overflow: hidden; }
.pdf .eyebrow { color: var(--amber); }
.pdf .sub { color: var(--night-ink-2); }
.pdf-shot { max-width: 1100px; margin: 64px auto 0; padding: 0 var(--gutter); }
.pdf-shot img { width: 100%; height: auto; border-radius: 18px; box-shadow: 0 50px 120px -20px rgba(242, 169, 59, 0.18), 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.08); transform: scale(var(--ps, 0.9)); transform-origin: 50% 0; opacity: var(--po, 0.4); will-change: transform; }
.trio { max-width: 1000px; margin: 64px auto 0; padding: 0 var(--gutter); display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.trio h3 { margin: 0 0 8px; font: 600 19px/1.3 var(--sans); letter-spacing: -0.02em; }
.trio p { margin: 0; color: var(--night-ink-2); font-size: 16px; line-height: 1.5; }
@media (max-width: 760px) { .trio { grid-template-columns: 1fr; gap: 28px; } }

/* ---------- Quiz ---------- */
.quiz { padding: clamp(100px, 16vh, 170px) var(--gutter); }
.quiz-grid { max-width: 1080px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 96px); align-items: center; }
.flip { display: block; width: 100%; aspect-ratio: 4 / 3; padding: 0; border: 0; background: none; cursor: pointer; perspective: 1400px; }
.flip-in { position: relative; display: block; width: 100%; height: 100%; transform-style: preserve-3d; transition: transform 900ms var(--ease); }
.flip.flipped .flip-in { transform: rotateY(180deg); }
.face { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; padding: 36px; border-radius: 26px; background: var(--surface); box-shadow: var(--shadow-xl); backface-visibility: hidden; -webkit-backface-visibility: hidden; text-align: center; }
.face.back { transform: rotateY(180deg); }
.face .q { font: 600 12px/1 var(--text-font); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.face .prompt { font: 400 clamp(20px, 2.4vw, 26px)/1.35 var(--serif); color: var(--ink); max-width: 420px; }
.face .hint { font: 500 13px/1 var(--text-font); color: var(--amber-ink); }
.face .answer { font: 600 clamp(32px, 4vw, 46px)/1.1 var(--serif); letter-spacing: -0.02em; }
.grade { display: flex; gap: 10px; margin-top: 8px; }
.grade b { padding: 10px 18px; border-radius: 10px; border: 1px solid var(--line-2); font: 500 14px/1 var(--text-font); }
.grade b.ok { background: var(--ink); color: #fff; border-color: var(--ink); }
@media (max-width: 860px) { .quiz-grid { grid-template-columns: 1fr; } }

/* ---------- Privacy ---------- */
.privacy { padding: clamp(100px, 16vh, 170px) var(--gutter); }
.privacy .h2 { max-width: 820px; }
.privacy .sub { max-width: 640px; }
.lock { width: 76px; height: 76px; margin: 0 auto 26px; display: grid; place-items: center; border-radius: 22px; background: var(--surface); box-shadow: var(--shadow-card); }
.lock svg { width: 38px; height: 38px; fill: none; stroke: var(--amber-ink); stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.chips { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 640px; margin: 34px auto 26px; padding: 0; }
.chips li { padding: 9px 16px; border-radius: 999px; background: var(--surface); box-shadow: 0 0 0 1px var(--line); font: 500 15px/1 var(--sans); letter-spacing: -0.01em; }
.chips li::before { content: "✓"; margin-right: 7px; color: var(--amber-ink); font-weight: 700; }

/* ---------- Download ---------- */
.download { padding: clamp(100px, 16vh, 170px) var(--gutter) clamp(90px, 12vh, 140px); text-align: center; }
.dl-icon { width: 88px; height: 88px; margin: 0 auto 28px; border-radius: 22px; box-shadow: var(--shadow-card); }
.install { list-style: none; counter-reset: s; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 900px; margin: 56px auto 0; padding: 0; text-align: left; }
.install li { counter-increment: s; padding: 22px; border-radius: 20px; background: var(--surface); box-shadow: 0 0 0 1px var(--line); font-size: 16px; line-height: 1.5; color: var(--ink-2); }
.install li::before { content: counter(s); display: grid; place-items: center; width: 28px; height: 28px; margin-bottom: 14px; border-radius: 50%; background: var(--mark); color: var(--amber-ink); font: 700 14px/1 var(--sans); }
.install b { color: var(--ink); font-weight: 600; }
@media (max-width: 760px) { .install { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 40px var(--gutter) 48px; font-size: 14px; color: var(--ink-2); letter-spacing: 0; }
.foot-in { max-width: 1080px; margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; gap: 16px 32px; }
.foot-brand { display: flex; align-items: center; gap: 9px; font: 600 15px/1 var(--sans); color: var(--ink); }
.foot-brand img { width: 20px; height: 20px; border-radius: 5px; }
.foot-brand .muted { font-weight: 400; color: var(--ink-3); margin-left: 4px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 22px; margin-left: auto; }
.foot-links a { text-decoration: none; }
.foot-links a:hover { color: var(--ink); }
.legal { flex-basis: 100%; margin: 8px 0 0; font-size: 12.5px; line-height: 1.5; color: var(--ink-3); }

/* ---------- Scroll reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s var(--ease), transform 1s var(--ease); transition-delay: var(--rd, 0ms); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Simple pages ---------- */
.page { max-width: 720px; margin: 0 auto; padding: 130px var(--gutter) 100px; }
.page h1 { margin: 0 0 12px; font: 700 clamp(40px, 6vw, 60px)/1.05 var(--sans); letter-spacing: -0.04em; }
.page h2 { margin: 48px 0 12px; font: 700 26px/1.2 var(--sans); letter-spacing: -0.025em; }
.page p, .page li { color: #3a3a3c; line-height: 1.6; }
.page table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 15px; }
.page th, .page td { text-align: left; vertical-align: top; padding: 12px 10px; border-bottom: 1px solid var(--line); }
.page th { font-weight: 600; color: var(--ink); }
.page .updated { color: var(--ink-3); font-size: 15px; margin: 0 0 32px; }
.page .wrap-table { overflow-x: auto; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 1ms !important; animation-delay: 0ms !important; transition-duration: 1ms !important; }
  .hero-stage .window { transform: none !important; }
  .js .reveal { opacity: 1; transform: none; }
  .scrub-text .sw { opacity: 1 !important; }
  .pdf-shot img { transform: none !important; opacity: 1 !important; }
}