:root {
    --ground:   #0F0B08;
    --panel:    #17110D;
    --panel-2:  #1E1611;
    --line:     #2C231B;
    --line-2:   #3A2D22;
    --ink:      #F2EAE2;
    --muted:    #A79789;
    --faint:    #746457;
    --accent:   #FF5B1F;
    --ember:    #FF8A3D;
    --steel:    #8AA9B5;
    --maxw: 1140px;
    --pad: clamp(20px, 5vw, 56px);
    --display: "Space Grotesk", -apple-system, "Segoe UI", system-ui, sans-serif;
    --body: "Hanken Grotesk", -apple-system, "Segoe UI", system-ui, Roboto, Arial, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    color-scheme: dark;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--ground);
    color: var(--ink);
    font-family: var(--body);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
  }

  .mono { font-family: var(--mono); }
  .wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }

  .eyebrow {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 10px;
  }
  .eyebrow::before {
    content: "";
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px 1px var(--accent);
  }

  h1, h2, h3 { font-family: var(--display); letter-spacing: -0.03em; text-wrap: balance; line-height: 1.04; margin: 0; font-weight: 700; }
  a { color: inherit; }

  /* ---------- top bar ---------- */
  .topbar {
    position: sticky; top: 0; z-index: 20;
    background: color-mix(in srgb, var(--ground) 82%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
  .brand { display: flex; align-items: center; gap: 12px; font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; font-size: 18px; }
  .brand svg { flex: none; display: block; }
  .topbar .signin { font-family: var(--mono); font-size: 13px; color: var(--muted); text-decoration: none; letter-spacing: 0.02em; }
  .topbar .signin:hover { color: var(--ink); }

  /* ---------- hero ---------- */
  .hero { position: relative; border-bottom: 1px solid var(--line); }
  .hero .wrap {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
    padding-block: clamp(56px, 9vw, 104px);
  }
  .hero-copy { max-width: 34ch; }
  .hero h1 { font-size: clamp(40px, 6.4vw, 68px); margin-top: 22px; }
  .hero h1 .lo { color: var(--muted); font-weight: 700; }
  .hero .sub {
    color: var(--muted);
    font-size: clamp(16px, 1.6vw, 18.5px);
    margin-top: 22px;
    max-width: 46ch;
    line-height: 1.62;
  }
  .cta-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 32px; }
  .btn {
    font-family: var(--mono);
    font-size: 14px; letter-spacing: 0.03em;
    background: var(--accent); color: #1a0d06;
    font-weight: 700;
    border: 0; border-radius: 3px;
    padding: 14px 22px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 9px;
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  }
  .btn:hover { background: var(--ember); transform: translateY(-1px); box-shadow: 0 8px 26px -8px var(--accent); }
  .btn:disabled { opacity: .55; cursor: default; transform: none; box-shadow: none; }
  .btn .arw { transition: transform .18s ease; }
  .btn:hover .arw { transform: translateX(3px); }
  .cta-note { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: 0.02em; }

  /* instrument panel (canvas) */
  .plot {
    position: relative;
    border: 1px solid var(--line-2);
    border-radius: 5px;
    background:
      radial-gradient(120% 100% at 78% 18%, rgba(255,91,31,0.09), transparent 60%),
      var(--panel);
    padding: 14px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.03), 0 30px 60px -40px #000;
  }
  .plot .plot-head {
    display: flex; justify-content: space-between; align-items: baseline;
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--faint);
    padding: 2px 4px 12px;
  }
  .plot .tag-measured { color: var(--steel); }
  canvas#curve { display: block; width: 100%; height: 300px; }
  .plot .plot-foot {
    display: flex; justify-content: space-between;
    font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em;
    color: var(--faint); padding: 10px 4px 2px;
  }

  /* ---------- wedge band ---------- */
  .wedge { border-bottom: 1px solid var(--line); background: var(--panel); }
  .wedge .wrap { padding-block: clamp(38px, 5vw, 58px); }
  .wedge p {
    font-family: var(--display);
    margin: 0; font-size: clamp(21px, 2.9vw, 30px);
    font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; max-width: 24ch; text-wrap: balance;
  }
  .wedge b { color: var(--accent); font-weight: 700; }
  .wedge .aside { color: var(--muted); font-weight: 500; }

  /* ---------- section scaffolding ---------- */
  .section { padding-block: clamp(60px, 8vw, 108px); border-bottom: 1px solid var(--line); }
  .sec-head { max-width: 40ch; margin-bottom: clamp(34px, 5vw, 52px); }
  .sec-head h2 { font-size: clamp(28px, 4vw, 42px); }
  .sec-head p { color: var(--muted); margin: 16px 0 0; font-size: 17px; }

  /* pillars */
  .pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
  .pillar { background: var(--panel); padding: clamp(24px, 3vw, 38px); position: relative; transition: background .25s ease; }
  .pillar:hover { background: var(--panel-2); }
  .pillar .kicker { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--faint); }
  .pillar h3 { font-size: 22px; margin: 14px 0 12px; }
  .pillar h3 span { color: var(--accent); }
  .pillar p { margin: 0; color: var(--muted); font-size: 15.5px; line-height: 1.6; }
  .pillar::after { content:""; position:absolute; left:0; bottom:0; height:2px; width:0; background:var(--accent); transition: width .3s ease; }
  .pillar:hover::after { width: 46px; }

  /* measurement ladder */
  .ladder { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
  .rung { background: var(--panel); display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 20px; align-items: center; padding: 20px clamp(20px, 3vw, 30px); }
  .rung:hover { background: var(--panel-2); }
  .rung .name { font-weight: 600; font-size: 17.5px; letter-spacing: -0.01em; }
  .rung .desc { color: var(--muted); font-size: 14px; margin-top: 3px; }
  .meter { display: flex; gap: 5px; align-items: center; }
  .meter i { width: 26px; height: 8px; border-radius: 2px; background: var(--line-2); display: block; }
  .meter i.on { background: var(--steel); }
  .meter i.hot { background: var(--accent); box-shadow: 0 0 8px -1px var(--accent); }
  .meter .lab { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); margin-left: 10px; width: 8ch; text-align: right; }
  .ladder-note { margin: 20px 2px 0; font-family: var(--mono); font-size: 12.5px; color: var(--faint); letter-spacing: 0.01em; display: flex; gap: 10px; }
  .ladder-note::before { content: "//"; color: var(--accent); }

  /* race feature */
  .feature { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 60px); align-items: center; }
  .feature .copy h2 { font-size: clamp(26px, 3.6vw, 38px); }
  .feature .copy p { color: var(--muted); margin: 18px 0 0; }
  .script {
    border: 1px solid var(--line-2); border-radius: 6px; background: var(--panel);
    font-family: var(--mono); font-size: 13px; overflow: hidden;
    box-shadow: 0 30px 60px -44px #000;
  }
  .script .sh { padding: 12px 16px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; color: var(--faint); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
  .script .sh .live { color: var(--accent); }
  .script .row { display: grid; grid-template-columns: 84px 1fr; gap: 14px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
  .script .row:last-child { border-bottom: 0; }
  .script .seg { color: var(--steel); }
  .script .seg.climb { color: var(--accent); }
  .script .val { color: var(--ink); }
  .script .val em { color: var(--muted); font-style: normal; }
  .script .u { color: var(--faint); }

  /* coaches */
  .coaches { background: var(--panel); border-bottom: 1px solid var(--line); }
  .coaches .feature { grid-template-columns: 0.9fr 1.1fr; }
  .queue { border: 1px solid var(--line-2); border-radius: 6px; overflow: hidden; background: var(--ground); }
  .queue .qh { padding: 13px 16px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); display:flex; justify-content: space-between; }
  .qrow { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 14px; padding: 15px 16px; border-bottom: 1px solid var(--line); }
  .qrow:last-child { border-bottom: 0; }
  .qrow .who { font-weight: 600; font-size: 15.5px; }
  .qrow .meta { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-top: 2px; }
  .pill { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; padding: 5px 9px; border-radius: 3px; border: 1px solid; white-space: nowrap; }
  .pill.retest { color: var(--ember); border-color: color-mix(in srgb, var(--ember) 45%, transparent); background: color-mix(in srgb, var(--ember) 9%, transparent); }
  .pill.review { color: var(--steel); border-color: color-mix(in srgb, var(--steel) 40%, transparent); background: color-mix(in srgb, var(--steel) 8%, transparent); }
  .pill.check  { color: var(--muted); border-color: var(--line-2); }

  /* cta */
  .cta { text-align: center; }
  .cta .wrap { max-width: 720px; }
  .cta h2 { font-size: clamp(30px, 5vw, 50px); }
  .cta p { color: var(--muted); margin: 18px auto 0; max-width: 48ch; }
  form.wl { display: flex; gap: 10px; justify-content: center; margin: 34px auto 0; max-width: 480px; flex-wrap: wrap; }
  form.wl input {
    flex: 1 1 240px; min-width: 0;
    background: var(--panel); border: 1px solid var(--line-2); border-radius: 3px;
    color: var(--ink); font-size: 15px; padding: 13px 16px;
    font-family: var(--body);
  }
  form.wl input::placeholder { color: var(--faint); }
  form.wl input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
  .wl-msg { min-height: 20px; margin-top: 16px; font-family: var(--mono); font-size: 13px; letter-spacing: 0.02em; }
  .wl-msg.ok { color: var(--steel); }
  .wl-msg.err { color: var(--ember); }
  .sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }

  /* footer */
  footer { padding-block: 40px; }
  footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
  footer .tag { font-family: var(--mono); font-size: 12.5px; color: var(--faint); letter-spacing: 0.02em; }
  footer .links { display: flex; gap: 22px; font-family: var(--mono); font-size: 12.5px; }
  footer .links a { color: var(--muted); text-decoration: none; }
  footer .links a:hover { color: var(--ink); }

  /* reveal */
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
  .reveal.in { opacity: 1; transform: none; }

  @media (max-width: 860px) {
    .hero .wrap { grid-template-columns: 1fr; }
    .hero-copy { max-width: none; }
    .plot { order: 2; }
    .pillars, .feature, .coaches .feature { grid-template-columns: 1fr; }
    .wedge p { max-width: none; }
  }
  @media (prefers-reduced-motion: reduce) {
    .reveal { transition: none; opacity: 1; transform: none; }
    .btn, .btn .arw, .pillar, .pillar::after { transition: none; }
  }
  :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- language switcher ---------- */
.topbar .right { display: flex; align-items: center; gap: 16px; }
.lang { display: inline-flex; gap: 1px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; }
.lang a { color: var(--faint); text-decoration: none; padding: 4px 7px; border-radius: 3px; }
.lang a:hover { color: var(--ink); }
.lang a.on { color: var(--accent); }