:root {
  --bg: #f7f4ef;
  --surface: #ffffff;
  --ink: #171717;
  --muted: #65615a;
  --line: rgba(23, 23, 23, 0.12);
  --dark: #111111;
  --accent: #c8904a;
  --accent-soft: #efe1cf;
  --radius: 28px;
  --shadow: 0 24px 70px rgba(23, 23, 23, 0.10);
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, rgba(200, 144, 74, 0.18), transparent 32rem), radial-gradient(circle at bottom right, rgba(17, 17, 17, 0.08), transparent 30rem), var(--bg);
  color: var(--ink);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.page-shell { overflow: hidden; }
header { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(18px); background: rgba(247, 244, 239, 0.82); border-bottom: 1px solid var(--line); }
.nav { max-width: var(--max); margin: 0 auto; padding: 18px 22px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 760; letter-spacing: -0.02em; text-decoration: none; }
.brand-icon { width: 34px; height: 34px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; color: var(--muted); }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--ink); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 13px 18px; border-radius: 999px; border: 1px solid var(--dark); background: var(--dark); color: #fff; text-decoration: none; font-weight: 700; font-size: 14px; transition: transform .2s ease, box-shadow .2s ease; box-shadow: 0 12px 24px rgba(17, 17, 17, 0.14); }
.button:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(17, 17, 17, 0.18); }
.button.secondary { background: transparent; color: var(--ink); box-shadow: none; border-color: var(--line); }
main { padding: 0 22px; }
.hero { max-width: var(--max); margin: 0 auto; min-height: 82vh; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 56px; padding: 84px 0 64px; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: rgba(255,255,255,.55); font-size: 13px; font-weight: 700; letter-spacing: .02em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
h1 { margin: 26px 0 22px; font-size: clamp(48px, 7vw, 88px); line-height: .94; letter-spacing: -0.07em; max-width: 780px; }
.lead { font-size: clamp(18px, 2.1vw, 23px); color: var(--muted); max-width: 660px; line-height: 1.55; margin: 0 0 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.symbol-card {
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.8);
  border-radius: calc(var(--radius) + 10px);
  box-shadow: var(--shadow);
  padding: 28px;
  position: relative;
}
.symbol-stage {
  min-height: 460px;
  border-radius: var(--radius);
  background: #ffffff;
  display: grid;
  place-items: center;
  padding: 54px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,.06);
}

.symbol-stage::after {
  content: "Universal THR Symbol";
  position: absolute;
  left: 28px;
  bottom: 22px;
  color: rgba(0,0,0,.45);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}.hero-symbol {
  width: 100%;
  max-width: none;
  height: auto;
  position: relative;
  z-index: 1;
  transform: scale(2.25);
  transform-origin: center center;
}.note { margin-top: 16px; color: var(--muted); font-size: 14px; text-align: center; }
section { max-width: var(--max); margin: 0 auto; padding: 32px 0; }
.section-kicker { color: var(--accent); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: 13px; margin-bottom: 12px; }
h2 { font-size: clamp(34px, 4.6vw, 58px); line-height: 1.02; letter-spacing: -0.055em; margin: 0 0 22px; max-width: 900px; }
.section-intro { max-width: 780px; font-size: 19px; color: var(--muted); margin: 0; }
.statement { background: var(--dark); color: #fff; border-radius: calc(var(--radius) + 10px); padding: clamp(32px, 5vw, 70px); display: grid; grid-template-columns: .82fr 1.18fr; gap: 48px; align-items: start; box-shadow: var(--shadow); }
.statement .section-kicker { color: #dcb478; }
.statement h2 { color: #fff; }
.statement p { color: rgba(255,255,255,.74); font-size: 18px; margin-top: 0; }
.statement strong { color: #fff; }
.principles-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 34px; }
.principle { background: rgba(255,255,255,.72); border: 1px solid rgba(23,23,23,.08); border-radius: 22px; padding: 22px; min-height: 190px; }
.principle span { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--accent-soft); color: var(--ink); font-weight: 800; margin-bottom: 18px; }
.principle h3 { margin: 0 0 10px; font-size: 18px; line-height: 1.15; letter-spacing: -0.02em; }
.principle p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.5; }
.downloads { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 36px; }
.download-card { background: var(--surface); border: 1px solid var(--line); border-radius: 26px; overflow: hidden; text-decoration: none; box-shadow: 0 14px 30px rgba(23,23,23,.05); transition: transform .2s ease, box-shadow .2s ease; }
.download-card:hover { transform: translateY(-4px); box-shadow: 0 20px 44px rgba(23,23,23,.10); }
.preview { height: 190px; display: grid; place-items: center; background: #f1eee8; border-bottom: 1px solid var(--line); padding: 34px; }
.preview img { max-width: 122px; max-height: 122px; object-fit: contain; }
.preview.dark { background: #111; }
.preview.light { background: #fff; }
.preview.transparent { background-color: #fff; background-image: linear-gradient(45deg, #eee 25%, transparent 25%), linear-gradient(-45deg, #eee 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #eee 75%), linear-gradient(-45deg, transparent 75%, #eee 75%); background-size: 22px 22px; background-position: 0 0, 0 11px, 11px -11px, -11px 0; }
.download-body { padding: 18px; }
.download-body h3 { margin: 0 0 6px; font-size: 17px; letter-spacing: -0.02em; }
.download-body p { margin: 0; color: var(--muted); font-size: 14px; }
.usage { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 34px; }
.usage-card { background: rgba(255,255,255,.65); border: 1px solid var(--line); border-radius: 28px; padding: 30px; }
.usage-card h3 { margin-top: 0; font-size: 24px; letter-spacing: -0.035em; }
.usage-card p, .usage-card li { color: var(--muted); }
.usage-card ul { padding-left: 20px; margin-bottom: 0; }
.quote { border-left: 4px solid var(--accent); padding-left: 24px; font-size: clamp(24px, 3vw, 38px); line-height: 1.15; letter-spacing: -0.04em; max-width: 930px; margin: 0; }
.quote-credit { color: var(--muted); margin-top: 18px; }
.contact-band { background: var(--surface); border: 1px solid var(--line); border-radius: calc(var(--radius) + 10px); padding: clamp(30px, 5vw, 58px); display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center; box-shadow: var(--shadow); }
footer { max-width: var(--max); margin: 0 auto; padding: 44px 22px 56px; color: var(--muted); display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (max-width: 1120px) { .downloads { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 980px) { .hero, .statement, .contact-band { grid-template-columns: 1fr; } .principles-grid { grid-template-columns: repeat(2, 1fr); } .downloads { grid-template-columns: repeat(2, 1fr); } .symbol-stage { min-height: 360px; } }
@media (max-width: 680px) { .nav-links { display: none; } main { padding: 0 16px; } .hero { padding-top: 58px; gap: 34px; } .principles-grid, .downloads, .usage { grid-template-columns: 1fr; } .statement, .contact-band { border-radius: 28px; } footer { flex-direction: column; } }