:root {
  color-scheme: light;
  --bg: #fffdf8;
  --surface: #ffffff;
  --surface-2: #f6f1e8;
  --line: #ded8cb;
  --text: #201e1a;
  --muted: #746f66;
  --accent: #df562d;
  --accent-dark: #bd4525;
  --accent-2: #397468;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
.shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
h1, h2, h3, p { margin-top: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 max(20px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, .9);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; place-items: center; width: 36px; height: 36px;
  border-radius: 10px; background: var(--text); color: #fff; font-weight: 900;
}
.brand > span:last-child { display: flex; align-items: baseline; gap: 8px; }
.brand small { color: var(--muted); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
nav { display: flex; gap: 28px; color: var(--muted); font-size: .9rem; }
nav a:hover, nav a:focus-visible { color: var(--text); }

.eyebrow, .section-kicker {
  color: var(--accent-dark); font-size: .75rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase;
}

.hero { padding: 92px 0 70px; }
h1 {
  max-width: 900px; margin: 22px 0;
  font-size: clamp(2.6rem, 6.4vw, 5.6rem); line-height: .96; letter-spacing: -.06em;
}
h1 em { color: var(--accent); font-family: Georgia, "Times New Roman", serif; font-weight: 400; }
.hero-copy { max-width: 710px; color: var(--muted); font-size: clamp(1.05rem, 1.7vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 18px;
  border: 1px solid var(--line); border-radius: 9px; background: transparent; color: var(--text);
  cursor: pointer; font-weight: 600;
}
.button:hover, .button:focus-visible { border-color: var(--accent); outline: none; }
.button-primary { border-color: var(--text); background: var(--text); color: #fff; font-weight: 800; }
.button-primary:hover, .button-primary:focus-visible { border-color: var(--accent-dark); background: var(--accent-dark); }

.demos { padding: 24px 0 80px; }
.demos h2 { margin: 14px 0 32px; font-size: clamp(1.9rem, 3.4vw, 2.7rem); letter-spacing: -.03em; }
.demo-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.demo-card {
  display: flex; flex-direction: column; justify-content: space-between; gap: 24px;
  padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface);
}
.demo-card:hover { border-color: var(--accent); }
.demo-tag {
  display: inline-block; margin-bottom: 14px;
  color: var(--accent-2); font-size: .72rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
}
.demo-card h3 { margin-bottom: 10px; font-size: 1.5rem; letter-spacing: -.02em; }
.demo-card p { color: var(--muted); margin-bottom: 0; }
.demo-card code {
  padding: 1px 5px; border-radius: 5px; background: var(--surface-2);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88em;
}

.demo-stats { display: flex; flex-wrap: wrap; gap: 28px; margin: 22px 0 0; }
.demo-stats dt { color: var(--muted); font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.demo-stats dd { margin: 4px 0 0; font-size: 1.15rem; font-weight: 800; letter-spacing: -.02em; }

.demo-cta { align-self: flex-start; }

.paper-section { padding: 0 0 90px; }
.paper-card {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 28px;
  padding: 34px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface-2);
}
.paper-card h2 { margin: 14px 0 8px; max-width: 760px; font-size: clamp(1.5rem, 2.6vw, 2.1rem); letter-spacing: -.03em; }
.paper-card p { margin-bottom: 0; color: var(--muted); }

footer { border-top: 1px solid var(--line); padding: 26px 0; color: var(--muted); font-size: .85rem; }
footer .shell { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

@media (max-width: 640px) {
  .hero { padding: 60px 0 48px; }
  .demo-card { padding: 22px; }
}