/* QEC: lab-instrument look. Near-black green, one live green, thin lines, mono numbers. No blue anywhere. */
:root {
  --bg: #020503; --bg2: #050a04; --panel: #0a1308; --panel2: #101c0d; --panel3: #172813;
  --line: rgba(160, 255, 110, .12); --line2: rgba(160, 255, 110, .24);
  --text: #eef8e8; --muted: #94ab8c; --faint: #637a5c;
  --g: #8cf53f; --g2: #4fc21b; --gdim: rgba(140, 245, 63, .14);
  --bad: #ff6a5a; --amber: #ffd166; --ink: #0a1503;
  --r: 14px; --head: 'Space Grotesk', Inter, system-ui, sans-serif; --body: Inter, system-ui, sans-serif; --mono: 'JetBrains Mono', ui-monospace, monospace;
}
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font: 400 16px/1.55 var(--body); min-height: 100vh; -webkit-font-smoothing: antialiased; position: relative; overflow-x: hidden; }
body:before { content: ""; position: fixed; inset: 0; z-index: -2; background: radial-gradient(60% 40% at 50% -5%, rgba(140, 245, 63, .12), transparent 70%), radial-gradient(40% 30% at 100% 30%, rgba(31, 191, 80, .06), transparent 70%); }
body:after { content: ""; position: fixed; inset: 0; z-index: -1; background-image: linear-gradient(rgba(160, 255, 110, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(160, 255, 110, .035) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(80% 60% at 50% 0%, #000, transparent 85%); -webkit-mask-image: radial-gradient(80% 60% at 50% 0%, #000, transparent 85%); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--g); color: var(--ink); padding: 8px 12px; border-radius: 8px; z-index: 99; } .skip:focus { left: 8px; }
.wrap { width: min(1180px, 100% - 40px); margin: 0 auto; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); } .g-t { color: var(--g); } .bad-t { color: var(--bad); } .amber-t { color: var(--amber); }

/* ---------- header / footer ---------- */
.top { position: sticky; top: 0; z-index: 30; background: rgba(3, 7, 4, .78); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 12px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font: 700 22px var(--head); letter-spacing: .01em; }
.brand img { filter: drop-shadow(0 0 10px rgba(140, 245, 63, .5)); }
.nav { display: flex; gap: 4px; margin-left: 18px; }
.nav a { padding: 8px 14px; border-radius: 9px; color: var(--muted); font-weight: 600; font-size: 14.5px; transition: .15s; }
.nav a:hover { color: var(--text); background: var(--panel); } .nav a.on { color: var(--g); background: var(--gdim); }
.grow { flex: 1; }
.ico { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line2); display: grid; place-items: center; transition: .15s; } .ico:hover { border-color: var(--g); background: var(--gdim); }
.ico img { width: 18px; height: 18px; }
.burger { display: none; background: none; cursor: pointer; } .burger i, .burger i:before, .burger i:after { display: block; width: 16px; height: 2px; background: var(--text); position: relative; content: ""; } .burger i:before { position: absolute; top: -5px; } .burger i:after { position: absolute; top: 5px; }
.foot { margin-top: 90px; border-top: 1px solid var(--line); background: var(--bg2); }
.foot .in { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 24px 0; flex-wrap: wrap; font-size: 13.5px; color: var(--muted); }
.foot .soc { display: flex; gap: 8px; } .foot .soc a { width: 38px; height: 38px; border: 1px solid var(--line2); border-radius: 10px; display: grid; place-items: center; } .foot .soc img { width: 18px; height: 18px; }

/* ---------- controls ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line2); background: var(--panel); color: var(--text); border-radius: 11px; padding: 11px 18px; font: 600 14.5px var(--body); cursor: pointer; transition: .15s; white-space: nowrap; }
.btn:hover:not(:disabled) { border-color: var(--g); background: var(--panel2); }
.btn.go { background: var(--g); border-color: var(--g); color: var(--ink); box-shadow: 0 0 24px rgba(140, 245, 63, .28); } .btn.go:hover:not(:disabled) { background: #b6ff72; box-shadow: 0 0 34px rgba(140, 245, 63, .45); }
.btn.sm { padding: 8px 14px; font-size: 13.5px; border-radius: 9px; } .btn.xl { padding: 15px 26px; font-size: 16px; border-radius: 13px; }
.btn.ghost { background: transparent; } .btn:disabled { opacity: .45; cursor: not-allowed; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--line2); font: 600 12px var(--mono); color: var(--muted); letter-spacing: .04em; }
.chip.g { color: var(--g); border-color: rgba(140, 245, 63, .4); background: var(--gdim); } .chip.bad { color: var(--bad); border-color: rgba(255, 106, 90, .4); } .chip.amber { color: var(--amber); border-color: rgba(255, 209, 102, .4); }
.kicker { display: inline-flex; align-items: center; gap: 10px; font: 600 12.5px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--g); }
.kicker i { width: 8px; height: 8px; border-radius: 50%; background: var(--g); box-shadow: 0 0 12px var(--g); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .35; } }
h1, h2, h3 { font-family: var(--head); letter-spacing: -.02em; line-height: 1.08; }
h1 { font-size: clamp(38px, 5.4vw, 66px); font-weight: 700; } h2 { font-size: clamp(26px, 3.2vw, 38px); font-weight: 700; } h3 { font-size: 20px; font-weight: 600; }
.lead { color: var(--muted); font-size: clamp(16px, 1.6vw, 19px); max-width: 600px; }
.card { background: linear-gradient(180deg, var(--panel), var(--bg2)); border: 1px solid var(--line); border-radius: var(--r); }
.pad { padding: 22px; }
.label { font: 600 11.5px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
input, select, textarea { width: 100%; background: var(--bg2); border: 1px solid var(--line2); color: var(--text); border-radius: 10px; padding: 11px 13px; font: 500 15px var(--body); outline: none; transition: .15s; }
input:focus, select:focus, textarea:focus { border-color: var(--g); box-shadow: 0 0 0 3px var(--gdim); }
textarea { resize: vertical; min-height: 84px; }
input[type=range] { padding: 0; height: 22px; accent-color: var(--g); background: none; border: 0; box-shadow: none; }
.field { display: grid; gap: 7px; } .field > span, .field > label { font: 600 13px var(--body); color: var(--muted); } .field small { color: var(--faint); font-size: 12.5px; }
.toasts { position: fixed; right: 18px; bottom: 18px; display: grid; gap: 8px; z-index: 80; }
.toast { background: var(--panel3); border: 1px solid var(--line2); padding: 12px 16px; border-radius: 11px; font-size: 14px; max-width: 360px; animation: up .25s; box-shadow: 0 10px 30px rgba(0, 0, 0, .5); } .toast.bad { border-color: rgba(255, 106, 90, .5); }
@keyframes up { from { transform: translateY(10px); opacity: 0; } }
.page { padding: 44px 0 0; animation: up .35s both; }
.empty { text-align: center; padding: 70px 20px; color: var(--muted); }
.skel { background: linear-gradient(90deg, var(--panel), var(--panel2), var(--panel)); background-size: 200% 100%; animation: sk 1.2s infinite; border-radius: 10px; } @keyframes sk { to { background-position: -200% 0; } }

/* ---------- home ---------- */
.hero { display: grid; grid-template-columns: 1.02fr .98fr; gap: 40px; align-items: center; padding: 56px 0 30px; }
.hero h1 em { font-style: normal; color: var(--g); text-shadow: 0 0 40px rgba(140, 245, 63, .45); }
.hero .lead { margin: 22px 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-top: 38px; }
.stats div { background: var(--bg2); padding: 16px 18px; } .stats b { display: block; font: 700 26px var(--mono); color: var(--text); letter-spacing: -.03em; } .stats span { font-size: 12.5px; color: var(--muted); }
.live { position: relative; padding: 14px; }
.live canvas { width: 100%; aspect-ratio: 1 / .86; display: block; border-radius: 10px; background: #030a05; }
.live .cap { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 12px 6px 4px; font: 500 13px var(--mono); color: var(--muted); flex-wrap: wrap; }
.live .halo { position: absolute; inset: -30px; z-index: -1; background: radial-gradient(circle at 50% 40%, rgba(140, 245, 63, .2), transparent 65%); filter: blur(20px); }
.sec { padding: 70px 0 0; } .sech { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 26px; flex-wrap: wrap; } .sech p { color: var(--muted); max-width: 560px; margin-top: 8px; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.step { padding: 22px; } .step b { font: 700 13px var(--mono); color: var(--g); letter-spacing: .1em; } .step h3 { margin: 10px 0 8px; } .step p { color: var(--muted); font-size: 14.5px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }
.ch { padding: 20px; display: grid; gap: 14px; transition: .2s; } .ch:hover { border-color: var(--line2); transform: translateY(-2px); box-shadow: 0 16px 40px rgba(0, 0, 0, .4); }
.ch .hd { display: flex; gap: 14px; align-items: center; } .ch img.pic { width: 52px; height: 52px; border-radius: 12px; object-fit: cover; background: var(--panel3); border: 1px solid var(--line2); }
.ch .hd h3 { font-size: 18px; } .ch .mis { color: var(--muted); font-size: 14.5px; min-height: 66px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.bars { display: grid; gap: 7px; }
.bar-row { display: grid; grid-template-columns: 92px 1fr 62px; gap: 10px; align-items: center; font: 500 12px var(--mono); color: var(--muted); }
.bar-row .tr { height: 9px; background: var(--panel3); border-radius: 5px; position: relative; overflow: hidden; } .bar-row .tr i { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 5px; background: var(--faint); }
.bar-row.best .tr i { background: var(--g); box-shadow: 0 0 14px rgba(140, 245, 63, .6); } .bar-row.best { color: var(--text); } .bar-row b { text-align: right; color: var(--text); font-weight: 600; }
.feed { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; } .feed div { background: var(--bg2); padding: 14px 18px; display: grid; grid-template-columns: 150px 1fr 90px; gap: 16px; font-size: 14px; align-items: baseline; }
.feed .who { font: 600 12.5px var(--mono); color: var(--g); } .feed .when { font: 500 12px var(--mono); color: var(--faint); text-align: right; } .feed p { color: var(--text); opacity: .9; }
.band { margin-top: 80px; padding: 46px; text-align: center; display: grid; gap: 18px; justify-items: center; background: radial-gradient(60% 120% at 50% 0%, rgba(140, 245, 63, .12), transparent 70%), var(--panel); }
.formula { font: 500 14px var(--mono); background: var(--bg2); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; color: var(--g); overflow-x: auto; }

/* ---------- challenge page ---------- */
.chead { display: grid; grid-template-columns: auto 1fr auto; gap: 22px; align-items: center; padding: 22px; }
.chead img.pic { width: 92px; height: 92px; border-radius: 18px; object-fit: cover; border: 1px solid var(--line2); background: var(--panel3); }
.chead h1 { font-size: clamp(28px, 3.4vw, 42px); } .chead .mis { color: var(--muted); margin-top: 8px; max-width: 720px; }
.chead .side { display: grid; gap: 8px; justify-items: end; }
.lab { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 18px; margin-top: 18px; align-items: start; }
.col { display: grid; gap: 18px; }
.pane-h { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--line); flex-wrap: wrap; } .pane-h h3 { font-size: 16px; }
.cv-wrap { padding: 14px; } .cv-wrap canvas { width: 100%; display: block; border-radius: 10px; background: #030a05; aspect-ratio: 1 / .78; }
.verdict { display: flex; justify-content: space-between; gap: 12px; padding: 4px 6px 0; font: 500 13px var(--mono); color: var(--muted); flex-wrap: wrap; } .verdict b.ok { color: var(--g); } .verdict b.no { color: var(--bad); }
.ctl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 18px; padding: 18px 20px; border-top: 1px solid var(--line); }
.ctl .field.full { grid-column: 1 / -1; } .ctl .row { display: flex; justify-content: space-between; font: 500 13px var(--mono); color: var(--muted); } .ctl .row b { color: var(--text); }
.seg { display: inline-flex; border: 1px solid var(--line2); border-radius: 10px; overflow: hidden; } .seg button { background: none; border: 0; color: var(--muted); padding: 9px 14px; font: 600 13.5px var(--body); cursor: pointer; } .seg button.on { background: var(--g); color: var(--ink); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; padding: 0 20px 18px; }
.result { margin: 0 20px 18px; padding: 16px; border: 1px solid var(--line2); border-radius: 12px; background: var(--bg2); display: grid; gap: 10px; }
.result .big { font: 700 34px var(--mono); letter-spacing: -.04em; } .result .big small { font-size: 14px; color: var(--muted); letter-spacing: 0; font-weight: 500; }
table.lb { width: 100%; border-collapse: collapse; font-size: 13.5px; } table.lb th { text-align: left; font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--faint); padding: 10px 12px; border-bottom: 1px solid var(--line); }
table.lb td { padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; } table.lb tr:last-child td { border-bottom: 0; } table.lb tr.row { cursor: pointer; transition: .12s; } table.lb tr.row:hover { background: var(--panel2); }
table.lb .rk { font: 700 13px var(--mono); color: var(--faint); width: 36px; } table.lb tr.top1 .rk { color: var(--amber); } table.lb .rate { font: 700 14px var(--mono); } table.lb .ci { color: var(--faint); font: 500 11.5px var(--mono); } table.lb .strat { font: 500 11.5px var(--mono); color: var(--muted); }
.scroll-x { overflow-x: auto; }
.notes { display: grid; max-height: 460px; overflow: auto; } .notes div { padding: 13px 20px; border-bottom: 1px solid var(--line); font-size: 14px; } .notes div:last-child { border-bottom: 0; } .notes time { display: block; font: 500 11.5px var(--mono); color: var(--faint); margin-bottom: 3px; } .notes .result-n { border-left: 2px solid var(--g); background: rgba(140, 245, 63, .04); }
.kv { display: grid; gap: 1px; background: var(--line); border-radius: 10px; overflow: hidden; } .kv div { background: var(--bg2); padding: 10px 14px; display: flex; justify-content: space-between; gap: 10px; font-size: 13.5px; } .kv span:first-child { color: var(--muted); } .kv span:last-child { font-family: var(--mono); font-weight: 600; text-align: right; word-break: break-all; }
.chart { padding: 8px 14px 14px; } .chart svg { width: 100%; height: auto; display: block; }
.ca-pill { display: inline-flex; align-items: center; gap: 12px; max-width: 100%; padding: 9px 13px; border-radius: 10px; border: 1px solid var(--line2); background: var(--panel); color: var(--text); cursor: pointer; font: 600 12.5px var(--body); }
.ca-pill b { color: var(--amber); font-weight: 700; white-space: nowrap; } .ca-pill span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #b7cbbd; } .ca-pill em { font-style: normal; color: var(--faint); padding-left: 10px; border-left: 1px solid var(--line2); }
.ca-pill:hover { border-color: var(--g); }

/* ---------- studio ---------- */
.studio { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 22px; align-items: start; margin-top: 26px; }
.form { padding: 24px; display: grid; gap: 22px; } .form h3 { font-size: 15px; font-family: var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--g); margin-bottom: -6px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.drop { display: grid; place-items: center; text-align: center; gap: 4px; padding: 20px; border: 1.5px dashed var(--line2); border-radius: 14px; cursor: pointer; min-height: 140px; transition: .15s; position: relative; overflow: hidden; } .drop:hover { border-color: var(--g); background: var(--gdim); }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; } .drop img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.preview { padding: 22px; position: sticky; top: 84px; display: grid; gap: 16px; }
.preview .pic { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 16px; background: var(--panel3); border: 1px solid var(--line2); }
.status { font-size: 14px; color: var(--muted); min-height: 22px; } .status.error { color: var(--bad); }
dialog { background: var(--panel); color: var(--text); border: 1px solid var(--line2); border-radius: 16px; padding: 0; width: min(520px, 94vw); box-shadow: 0 30px 80px rgba(0, 0, 0, .7); } dialog::backdrop { background: rgba(0, 4, 1, .75); backdrop-filter: blur(4px); }
dialog .in { padding: 24px; display: grid; gap: 16px; }
.pending { padding: 16px 20px; border: 1px solid rgba(255, 209, 102, .4); background: rgba(255, 209, 102, .06); border-radius: 12px; margin-top: 20px; display: grid; gap: 8px; }

/* ---------- docs ---------- */
.prose { max-width: 820px; display: grid; gap: 16px; } .prose p { color: var(--muted); } .prose code, .code { font: 500 13px var(--mono); }
pre.code { background: var(--bg2); border: 1px solid var(--line); border-radius: 12px; padding: 16px; overflow-x: auto; color: #c4e6cc; line-height: 1.6; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }

@media (max-width: 960px) {
  .hero, .lab, .studio { grid-template-columns: 1fr; } .steps { grid-template-columns: 1fr 1fr; } .stats { grid-template-columns: 1fr 1fr; }
  .preview { position: static; } .chead { grid-template-columns: auto 1fr; } .chead .side { grid-column: 1 / -1; justify-items: start; grid-auto-flow: column; }
  .nav { position: fixed; left: 0; right: 0; top: 64px; flex-direction: column; background: var(--bg2); padding: 10px 20px 20px; margin: 0; border-bottom: 1px solid var(--line); transform: translateY(-120%); transition: .2s; } .nav.open { transform: none; } .burger { display: grid; }
  .feed div { grid-template-columns: 1fr; gap: 4px; } .feed .when { text-align: left; }
}
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } .two, .ctl { grid-template-columns: 1fr; } .band { padding: 28px 18px; } .chead { padding: 16px; } .chead img.pic { width: 64px; height: 64px; } }
@media (prefers-reduced-motion: reduce) { *, *:before, *:after { animation: none !important; transition: none !important; } html { scroll-behavior: auto; } }