:root {
  --paper: #f6f5f0; --card: #ffffff; --ink: #15171c; --ink2: #4a4f5a; --ink3: #8a8f99; --line: #e3e1d8; --grid: #ecebe4;
  --red: #e5484d; --orange: #f2711c; --yellow: #e8a800; --green: #2f9e66; --blue: #2563eb;
  --red-bg: #fdecec; --orange-bg: #fef0e6; --yellow-bg: #fdf5dc; --green-bg: #e7f6ee;
  --code: #15171c; --code-ink: #e9e7df;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Inter Tight', system-ui, -apple-system, Segoe UI, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #101216; --card: #171a20; --ink: #eceae3; --ink2: #b4b7bf; --ink3: #7b808b; --line: #262a32; --grid: #1a1d23;
    --red-bg: #3a1c1e; --orange-bg: #3a2516; --yellow-bg: #362c10; --green-bg: #15301f; --code: #0b0c0f; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #101216; --card: #171a20; --ink: #eceae3; --ink2: #b4b7bf; --ink3: #7b808b; --line: #262a32; --grid: #1a1d23;
  --red-bg: #3a1c1e; --orange-bg: #3a2516; --yellow-bg: #362c10; --green-bg: #15301f; --code: #0b0c0f; color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
/* house-key routing (credit, burning) only shows when the deployment has a house key */
body:not(.house) [data-house], body.house [data-nohouse] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.55 var(--sans);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px; -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
code, pre, .mono { font-family: var(--mono); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
@media (max-width: 640px) { .wrap { padding: 0 16px; } }

/* header */
header.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 22px; height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 800; letter-spacing: .06em; text-decoration: none; font-size: 17px; }
.brand svg { width: 26px; height: 26px; }
nav.links { display: flex; gap: 18px; font-size: 14px; color: var(--ink2); }
nav.links a { text-decoration: none; } nav.links a:hover { color: var(--ink); }
.spacer { flex: 1; }
.chip { font: 12px var(--mono); border: 1px solid var(--line); background: var(--card); padding: 6px 10px; border-radius: 8px; cursor: pointer; white-space: nowrap; color: var(--ink2); }
.btn { display: inline-flex; align-items: center; gap: 8px; font: 600 14px var(--sans); padding: 10px 16px; border-radius: 10px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.small { padding: 7px 12px; font-size: 13px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
@media (max-width: 860px) { nav.links { display: none; } .chip.ca { display: none; } }

/* hero */
.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 40px; padding: 56px 0 40px; align-items: start; }
@media (max-width: 960px) { .hero { grid-template-columns: 1fr; padding-top: 32px; } }
.eyebrow { font: 600 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink3); display: flex; align-items: center; gap: 8px; }
.eyebrow::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 4px var(--red-bg); animation: beat 1.4s infinite; }
@keyframes beat { 0%, 100% { transform: scale(1); } 15% { transform: scale(1.35); } 30% { transform: scale(1); } }
h1.word { font-size: clamp(64px, 11vw, 132px); line-height: .9; margin: 14px 0 6px; font-weight: 900; letter-spacing: -.02em; }
.ecg { width: 100%; height: 46px; margin: 4px 0 18px; }
.ecg path { fill: none; stroke: var(--red); stroke-width: 2.5; stroke-linejoin: round; stroke-dasharray: 900; stroke-dashoffset: 900; animation: draw 2.8s linear infinite; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.lead { font-size: 26px; line-height: 1.2; font-weight: 700; margin: 0 0 14px; }
.hero p { color: var(--ink2); margin: 0 0 14px; max-width: 520px; }
.cta { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0 14px; }
.ca-line { font: 12px var(--mono); color: var(--ink3); }

/* cards */
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; }
.desk { padding: 18px; box-shadow: 0 1px 0 var(--line), 0 18px 40px -24px rgba(0,0,0,.25); }
.label { font: 600 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink3); margin-bottom: 8px; }
textarea, input[type=text], input[type=number], select {
  width: 100%; font: 14px var(--mono); color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; outline: none;
}
textarea { min-height: 84px; resize: vertical; }
textarea:focus, input:focus, select:focus { border-color: var(--ink3); }
.samples { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 12px; }
.samples button { font: 12px var(--mono); padding: 5px 9px; border-radius: 7px; border: 1px solid var(--line); background: var(--paper); color: var(--ink2); cursor: pointer; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.samples button:hover { color: var(--ink); border-color: var(--ink3); }
.toggles { display: flex; gap: 14px; flex-wrap: wrap; font-size: 13px; color: var(--ink2); margin-bottom: 12px; align-items: center; }
.toggles label { display: flex; gap: 6px; align-items: center; cursor: pointer; }
.slider { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; font: 12px var(--mono); color: var(--ink2); margin-bottom: 14px; }
input[type=range] { accent-color: var(--ink); width: 100%; }

/* the wristband */
.band { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); margin-bottom: 12px; transition: background .25s; }
.band .dot { width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center; color: #fff; font: 800 13px var(--mono); }
.band b { font-size: 18px; display: block; line-height: 1.2; }
.band small { color: var(--ink2); font-size: 13px; }
.band .score { font: 700 26px var(--mono); }
.t-red { --c: var(--red); --cb: var(--red-bg); } .t-orange { --c: var(--orange); --cb: var(--orange-bg); }
.t-yellow { --c: var(--yellow); --cb: var(--yellow-bg); } .t-green { --c: var(--green); --cb: var(--green-bg); }
.band[class*="t-"] { background: var(--cb); border-color: color-mix(in srgb, var(--c) 35%, transparent); }
.band[class*="t-"] .dot { background: var(--c); }
.chart { font: 12.5px var(--mono); border-top: 1px dashed var(--line); padding-top: 10px; margin-bottom: 12px; }
.chart div { display: grid; grid-template-columns: 54px 1fr; gap: 8px; padding: 2px 0; color: var(--ink2); }
.chart .p { text-align: right; font-weight: 700; } .chart .p.up { color: var(--red); } .chart .p.down { color: var(--green); }
.ladder { display: grid; gap: 6px; }
.rung { display: grid; grid-template-columns: 12px 92px 1fr auto; gap: 10px; align-items: center; padding: 9px 12px; border-radius: 10px; border: 1px solid var(--line); font-size: 14px; transition: all .25s; background: var(--card); }
.rung .sw { width: 12px; height: 12px; border-radius: 3px; background: var(--c); }
.rung .who { font-weight: 700; }
.rung .m { font: 13px var(--mono); color: var(--ink2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rung .pr { font: 12px var(--mono); color: var(--ink3); }
.rung.on { border-color: var(--c); box-shadow: 0 0 0 2px color-mix(in srgb, var(--c) 30%, transparent); background: var(--cb); }
.rung.on .m { color: var(--ink); }
.why { font: 12.5px var(--mono); color: var(--ink2); margin-top: 12px; padding: 10px 12px; background: var(--paper); border-radius: 10px; }
.note { font-size: 12.5px; color: var(--ink3); margin-top: 10px; }
@media (max-width: 520px) { .rung { grid-template-columns: 12px 1fr auto; } .rung .pr { display: none; } }

/* sections */
section { padding: 56px 0; border-top: 1px solid var(--line); }
h2 { font-size: clamp(28px, 4vw, 40px); line-height: 1.1; margin: 8px 0 14px; letter-spacing: -.01em; }
.sub { color: var(--ink2); max-width: 680px; margin: 0 0 26px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 960px) { .grid4 { grid-template-columns: 1fr 1fr; } .grid3 { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .grid4 { grid-template-columns: 1fr; } }
.tier { padding: 18px; border-top: 5px solid var(--c); }
.tier .n { font: 12px var(--mono); color: var(--ink3); }
.tier h3 { margin: 4px 0 6px; font-size: 20px; }
.tier p { color: var(--ink2); font-size: 14px; margin: 0 0 10px; }
.tier .ex { font: 12px var(--mono); color: var(--ink2); }
.rule { padding: 20px; }
.rule h3 { margin: 0 0 8px; font-size: 18px; }
.rule p { margin: 0; color: var(--ink2); font-size: 15px; }
.rule .k { font: 700 12px var(--mono); color: var(--red); margin-bottom: 8px; }
pre.code { background: var(--code); color: var(--code-ink); padding: 16px 18px; border-radius: 12px; overflow-x: auto; font-size: 13.5px; line-height: 1.6; margin: 0; }
pre.code .c { color: #8a8f99; } pre.code .k { color: #f5b800; }

/* live board */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 14px; }
@media (max-width: 760px) { .stats { grid-template-columns: 1fr 1fr; } }
.stat { padding: 14px 16px; }
.stat .v { font: 700 24px var(--mono); }
.stat .l { font-size: 13px; color: var(--ink3); }
.bars { display: flex; height: 10px; border-radius: 6px; overflow: hidden; background: var(--grid); margin-top: 8px; }
.bars span { background: var(--c); transition: width .4s; }
.feed { max-height: 420px; overflow: auto; }
.row { display: grid; grid-template-columns: 70px 92px 1fr 90px 90px; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--line); font: 13px var(--mono); align-items: center; }
.row:last-child { border-bottom: 0; }
.row .tg { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--c); }
.row .tg::before { content: ''; width: 9px; height: 9px; border-radius: 2px; background: var(--c); }
.row .r { text-align: right; } .row .t { color: var(--ink3); } .row .sv { color: var(--green); }
.row.new { animation: flash 1.2s; }
@keyframes flash { from { background: var(--yellow-bg); } to { background: transparent; } }
.row.head { color: var(--ink3); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
@media (max-width: 640px) { .row { grid-template-columns: 70px 1fr 80px; } .row .hide-s { display: none; } }
.empty { padding: 30px 16px; text-align: center; color: var(--ink3); font-size: 14px; }

/* status */
.checks { display: grid; gap: 8px; }
.check { display: grid; grid-template-columns: 22px 1fr; gap: 10px; padding: 12px 14px; font-size: 14.5px; }
.check .i { font-weight: 800; } .check .i.ok { color: var(--green); } .check .i.no { color: var(--ink3); }
.check small { display: block; color: var(--ink3); font: 12px var(--mono); margin-top: 2px; word-break: break-all; }

/* faq */
details { border-bottom: 1px solid var(--line); padding: 14px 0; }
summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::after { content: '+'; font: 18px var(--mono); color: var(--ink3); } details[open] summary::after { content: '−'; }
details p { color: var(--ink2); margin: 10px 0 0; max-width: 760px; }

footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--ink3); font-size: 13px; }
footer .wrap { display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; }

/* app */
.app { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 28px 0 60px; }
@media (max-width: 900px) { .app { grid-template-columns: 1fr; } }
.panel { padding: 20px; }
.panel h3 { margin: 0 0 4px; font-size: 18px; } .panel .sub { margin-bottom: 14px; font-size: 14px; }
.full { grid-column: 1 / -1; }
.field { display: grid; gap: 6px; margin-bottom: 12px; }
.field > span { font-size: 13px; color: var(--ink2); }
.inline { display: flex; gap: 8px; } .inline > * { flex: 1; } .inline > .btn { flex: 0 0 auto; }
.msg { font-size: 13px; margin-top: 8px; min-height: 18px; } .msg.err { color: var(--red); } .msg.ok { color: var(--green); }
.keybox { font: 14px var(--mono); background: var(--code); color: var(--code-ink); padding: 14px; border-radius: 10px; word-break: break-all; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.seg button { font: 600 13px var(--sans); padding: 8px 14px; border: 0; background: var(--card); color: var(--ink2); cursor: pointer; }
.seg button.on { background: var(--ink); color: var(--paper); }
.big { font: 800 34px var(--mono); }
.meter { height: 8px; background: var(--grid); border-radius: 5px; overflow: hidden; margin: 6px 0 2px; } .meter span { display: block; height: 100%; background: var(--c, var(--ink)); }
table.list { width: 100%; border-collapse: collapse; font: 13px var(--mono); }
table.list td, table.list th { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); } table.list th { color: var(--ink3); font-weight: 500; }

/* docs */
.doc { max-width: 820px; padding: 36px 0 70px; }
.doc h2 { font-size: 28px; margin-top: 40px; } .doc h3 { margin-top: 26px; }
.doc p, .doc li { color: var(--ink2); }
.doc table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 10px 0; }
.doc td, .doc th { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; vertical-align: top; }
.doc code { font-size: 13px; background: var(--card); border: 1px solid var(--line); padding: 1px 5px; border-radius: 5px; }
.doc pre.code code { background: none; border: 0; padding: 0; }