:root {
  color-scheme: dark;
  --bg: #0b0b0d;
  --surface: #121216;
  --line: #2d2d33;
  --text: #f4f4f5;
  --muted: #b4b4bb;
  --faint: #93939d;
  --blue: #75baff;
  --button: #e7e7e9;
  --button-hover: #cacacf;
  --button-text: #151518;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; border-radius: 4px; }
.wrap { width: min(100% - 48px, 1120px); margin-inline: auto; }
.mono, .eyebrow, .requirements dt, .steps span { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.site-header { border-bottom: 1px solid var(--line); }
.nav { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { font-size: 17px; font-weight: 700; letter-spacing: -0.02em; text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 24px; color: var(--muted); font-size: 14px; }
.nav-links > a:not(.download) { text-decoration: none; }
.nav-links > a:not(.download):hover, .text-link:hover, .footer a:hover { color: var(--text); }

.hero { padding-top: 96px; padding-bottom: 64px; text-align: center; }
.eyebrow { margin: 0; color: var(--faint); font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { max-width: 850px; margin: 16px auto 0; font-size: clamp(48px, 7vw, 88px); line-height: 0.98; letter-spacing: -0.065em; }
h2 { margin-bottom: 0; font-size: clamp(32px, 4.2vw, 52px); line-height: 1.02; letter-spacing: -0.05em; }
h3 { font-size: 18px; line-height: 1.2; letter-spacing: -0.025em; }
.hero-copy { max-width: 550px; margin: 24px auto 0; color: var(--muted); font-size: 18px; line-height: 1.55; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 24px; margin-top: 40px; }
.download { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 20px; border-radius: 8px; background: var(--button); color: var(--button-text); font-size: 15px; font-weight: 700; text-decoration: none; transition: background-color 160ms ease; }
.download:hover { background: var(--button-hover); }
.download.compact { min-height: 36px; padding: 7px 12px; font-size: 13px; }
.text-link { color: var(--blue); font-size: 15px; font-weight: 650; text-underline-offset: 4px; }
.quiet { margin: 16px 0 0; color: var(--faint); font-size: 12px; }

.wave-shell { max-width: 920px; height: 230px; margin: 64px auto 0; padding: 16px; border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 24px; background: rgba(255, 255, 255, 0.025); }
.waveform { display: block; width: 100%; height: 100%; }

.section { display: grid; grid-template-columns: minmax(220px, 0.78fr) minmax(0, 2fr); gap: 64px; padding-block: 64px; border-top: 1px solid var(--line); }
.section-intro h2 { margin-top: 12px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin: 0; padding: 0; list-style: none; }
.steps li { border-top: 1px solid var(--line); padding-top: 16px; }
.steps span { color: var(--faint); font-size: 12px; }
.steps h3 { margin: 24px 0 8px; }
.steps p, .feature-grid p, .command-copy p { margin-bottom: 0; color: var(--muted); font-size: 15px; line-height: 1.6; }
.measure { grid-column: 2; max-width: 680px; margin: 8px 0 0; color: var(--muted); font-size: 16px; line-height: 1.65; }
.measure strong { color: var(--text); }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.feature-grid article { min-height: 176px; padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.feature-grid h3 { margin-bottom: 12px; }
.split { grid-template-columns: minmax(220px, 0.78fr) minmax(0, 1fr); }
.command-copy { display: grid; gap: 24px; max-width: 590px; }
.requirements { grid-column: 2; margin: 0; border-top: 1px solid var(--line); }
.requirements div { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.requirements dt { color: var(--faint); font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.requirements dd { margin: 0; color: var(--muted); }

.closing { padding: 96px 0; border-top: 1px solid var(--line); text-align: center; }
.closing h2 { margin: 12px 0 32px; }
.closing-link { display: block; margin-top: 20px; }
.footer { display: flex; justify-content: space-between; padding: 24px 0 32px; border-top: 1px solid var(--line); color: var(--faint); font-size: 13px; }
.footer a { color: var(--muted); }

@media (max-width: 760px) {
  .wrap { width: min(100% - 32px, 1120px); }
  .nav-links > a:not(.download) { display: none; }
  .hero { padding-top: 72px; }
  .hero-copy { font-size: 17px; }
  .wave-shell { height: 180px; margin-top: 40px; padding: 8px; border-radius: 16px; }
  .section, .split { grid-template-columns: 1fr; gap: 32px; padding-block: 48px; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .steps h3 { margin-top: 12px; }
  .measure, .requirements { grid-column: auto; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}