/* heatxr.com (docs/35 A16). Flat and dark: no borders, shadows, gradients or glows (owner). Typography first, one
   accent (the title's orange), real in-app images. Inter from the app (OFL, fonts/OFL.txt): the site loads nothing
   from other servers, as the privacy page says. */
@font-face { font-family: Inter; font-weight: 400; font-display: swap; src: url(fonts/inter-400.woff) format("woff"); }
@font-face { font-family: Inter; font-weight: 600; font-display: swap; src: url(fonts/inter-600.woff) format("woff"); }
@font-face { font-family: Inter; font-weight: 700 900; font-display: swap; src: url(fonts/inter-700.woff) format("woff"); }

:root {
  --bg: #07090e;
  --raise: #0f131b;
  --ink: #f3f5f8;
  --ink-2: #b4bccb;
  --ink-3: #737d90;
  --accent: #ff6b1a;
  --gutter: clamp(20px, 5vw, 64px);
  --max: 1280px;
  --radius: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 18px/1.6 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* Type */
.display {
  font-size: clamp(52px, 9vw, 128px);
  font-weight: 700;
  line-height: .94;
  letter-spacing: -.045em;
  margin: 0;
}
.h2 {
  font-size: clamp(34px, 4.6vw, 64px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.035em;
  margin: 0 0 24px;
}
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}
.lede { font-size: clamp(19px, 1.6vw, 22px); line-height: 1.55; color: var(--ink-2); margin: 0; }
p { color: var(--ink-2); }

/* Header */
.top { background: var(--bg); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.top img { height: 26px; width: auto; }
.top nav { display: flex; gap: 32px; font-size: 15px; font-weight: 600; }
.top nav a { color: var(--ink-3); text-decoration: none; transition: color .15s; }
.top nav a:hover, .top nav a[aria-current] { color: var(--ink); }

/* Hero art (the title is in the art) */
.hero img { width: 100%; }

/* Opening statement */
.open { padding: clamp(72px, 10vw, 144px) 0 clamp(88px, 11vw, 160px); }
.open .display { font-size: clamp(52px, 9.4vw, 136px); line-height: .92; letter-spacing: -.05em; }
.open .dot { color: var(--accent); }
.open-foot {
  display: grid; grid-template-columns: minmax(0, 560px) auto; justify-content: space-between; align-items: end;
  gap: 48px; margin-top: clamp(36px, 4.5vw, 64px);
}
.status { margin: 0; text-align: right; font-size: 17px; font-weight: 600; color: var(--ink); }
.status span {
  display: block; margin-bottom: 8px;
  font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
}

/* Features */
.feature { padding-bottom: clamp(88px, 11vw, 160px); }
.feature figure { margin: 0; }
.feature figure img { width: 100%; border-radius: var(--radius); background: var(--raise); }
.feature .text { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 6vw, 96px); margin-top: 40px; }
.feature .text p { margin: 0; font-size: 19px; }
.feature .text p + p { margin-top: 16px; }

.split .wrap { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(32px, 6vw, 88px); align-items: center; }
.split.flip .wrap { grid-template-columns: 1fr 1.35fr; }
.split.flip figure { order: 2; }
.split .text { display: block; margin: 0; }
.split .text p { font-size: 18px; }

/* Two facts side by side */
.pair { padding-bottom: clamp(88px, 11vw, 160px); }
.pair .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.pair article { background: var(--raise); border-radius: var(--radius); padding: clamp(32px, 4vw, 56px); }
.pair .h2 { font-size: clamp(28px, 3vw, 40px); }
.pair p { margin: 0; }

/* Closing */
.close { background: var(--raise); padding: clamp(80px, 10vw, 144px) 0; }
.close .wrap { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: end; }

/* Text pages */
.doc { padding: clamp(56px, 8vw, 112px) 0 clamp(80px, 10vw, 140px); }
.doc > .wrap { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(32px, 6vw, 96px); }
.doc aside { position: sticky; top: 32px; align-self: start; }
.doc aside .display { font-size: clamp(44px, 6vw, 80px); }
.doc aside p { font-size: 15px; color: var(--ink-3); margin: 20px 0 0; }
.doc .body { max-width: 720px; }
.doc h2 { font-size: 24px; font-weight: 700; letter-spacing: -.02em; line-height: 1.2; margin: 56px 0 14px; }
.doc p, .doc li { color: var(--ink-2); }
.doc strong { color: var(--ink); font-weight: 600; }
.doc a { color: var(--ink); text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 4px; }
.doc a:hover { color: var(--accent); }
.doc ul, .doc ol { padding-left: 22px; margin: 0; }
.doc li { margin: 10px 0; }
.doc li::marker { color: var(--ink-3); }
.lead-box { background: var(--raise); border-radius: var(--radius); padding: 28px 32px; }
.lead-box p { margin: 0; color: var(--ink); font-size: 19px; }

/* Footer */
footer { padding: 40px 0 56px; font-size: 14px; color: var(--ink-3); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; align-items: center; }
footer nav { display: flex; gap: 28px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }

@media (max-width: 900px) {
  .open-foot, .close .wrap, .feature .text, .split .wrap, .split.flip .wrap, .pair .wrap, .doc > .wrap { grid-template-columns: 1fr; }
  .split.flip figure { order: 0; }
  .split .text { margin-top: 32px; }
  .status { text-align: left; }
  .doc aside { position: static; }
}

@media (max-width: 560px) {
  body { font-size: 17px; }
  .top .wrap { height: 60px; }
  .top img { height: 22px; }
  .top nav { gap: 22px; font-size: 14px; }
  .feature .text p, .split .text p { font-size: 17px; }
  .lead-box { padding: 22px; }
}