:root {
  --ink: #16130f;
  --ink-soft: #57504a;
  --paper: #fbf8f3;
  --card: #ffffff;
  --line: #e6ded1;
  --accent: #b8442e;
  --accent-ink: #ffffff;
  --good: #2f6b47;
  --warn: #8a5a12;
  --shadow: 0 1px 2px rgba(22,19,15,.05), 0 8px 24px rgba(22,19,15,.06);
  --radius: 10px;
  --max: 60rem;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
img, video, canvas { max-width: 100%; }
a { color: var(--accent); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 42rem; }

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
header.site .wrap {
  display: flex; align-items: center; gap: 1rem;
  justify-content: space-between; min-height: 3.5rem; flex-wrap: wrap;
}
.brand { font-weight: 700; letter-spacing: -.01em; text-decoration: none; color: var(--ink); }
.brand span { color: var(--accent); }
nav.site a { color: var(--ink-soft); text-decoration: none; margin-left: 1.1rem; font-size: .92rem; }
nav.site a:hover { color: var(--accent); }

h1 { font-size: clamp(1.9rem, 4.6vw, 2.9rem); line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .6rem; }
h2 { font-size: 1.35rem; letter-spacing: -.01em; margin: 2.4rem 0 .7rem; }
h3 { font-size: 1.02rem; margin: 1.4rem 0 .35rem; }
p { margin: 0 0 1rem; }
.lede { font-size: 1.12rem; color: var(--ink-soft); }

.hero { padding: 3rem 0 1rem; }
.eyebrow {
  display: inline-block; font-size: .74rem; font-weight: 700; letter-spacing: .09em;
  text-transform: uppercase; color: var(--accent); border: 1px solid var(--accent);
  border-radius: 999px; padding: .18rem .6rem; margin-bottom: 1rem;
}

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.4rem; box-shadow: var(--shadow);
}

.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink);
  border: 0; border-radius: var(--radius); padding: .85rem 1.5rem;
  font: inherit; font-weight: 650; cursor: pointer; text-decoration: none;
}
.btn:hover { filter: brightness(1.07); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.big { font-size: 1.06rem; padding: .95rem 1.9rem; }

/* The disclosure block. Deliberately above the button and impossible to skim
   past — this is a pre-order for software that does not exist yet. */
.disclosure {
  border: 2px solid var(--warn); background: #fdf6e8; border-radius: var(--radius);
  padding: 1.1rem 1.25rem; margin: 1.4rem 0;
}
.disclosure h3 { margin-top: 0; color: var(--warn); font-size: .95rem;
  text-transform: uppercase; letter-spacing: .06em; }
.disclosure ul { margin: .4rem 0 0; padding-left: 1.15rem; }
.disclosure li { margin-bottom: .35rem; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }

table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 650; }
.scroll-x { overflow-x: auto; }

form label { display: block; font-weight: 600; font-size: .9rem; margin: .9rem 0 .25rem; }
input[type=text], input[type=email] {
  width: 100%; padding: .65rem .7rem; border: 1px solid var(--line);
  border-radius: 8px; font: inherit; background: #fff; color: var(--ink);
}
.hint { font-size: .85rem; color: var(--ink-soft); margin-top: .25rem; }
.err { color: var(--accent); font-weight: 600; }

footer.site {
  margin-top: 4rem; border-top: 1px solid var(--line);
  padding: 1.6rem 0 3rem; color: var(--ink-soft); font-size: .88rem;
}
footer.site a { color: var(--ink-soft); margin-right: 1rem; }

/* --- coach demo --- */
.stage { position: relative; background: #101010; border-radius: var(--radius); overflow: hidden; aspect-ratio: 9/16; max-height: 70vh; margin: 0 auto; }
.stage video, .stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.stage video { transform: scaleX(-1); }
.cues { position: absolute; left: 0; right: 0; bottom: 0; padding: .7rem; display: flex; gap: .4rem; flex-wrap: wrap; justify-content: center; }
.cue {
  background: rgba(16,16,16,.82); color: #fff; border-radius: 999px;
  padding: .3rem .8rem; font-size: .84rem; font-weight: 600; backdrop-filter: blur(4px);
}
.cue.ok { background: rgba(47,107,71,.9); }
.cue.fix { background: rgba(184,68,46,.92); }
.readout { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); margin-top: 1rem; }
.readout div { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: .6rem .75rem; }
.readout b { display: block; font-size: 1.25rem; font-variant-numeric: tabular-nums; }
.readout span { font-size: .78rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .05em; }

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2ece4; --ink-soft: #b0a79c; --paper: #14120f; --card: #1c1916;
    --line: #322c26; --accent: #e0745a; --accent-ink: #1a0f0b;
    --good: #6cbf8c; --warn: #e0b062;
  }
  .disclosure { background: #241d10; }
  input[type=text], input[type=email] { background: #14120f; }
}