/* S1 solutions — black gloss, chrome, one acid accent. Single dark palette.
   1 tokens · 2 base · 3 header, footer · 4 controls · 5 panels · 6 tables, badges, code
   7 landing (hero, demo, ticker, signal path, spec sheet, retention, calls, faq)
   8 docs & legal · 9 auth & error · 10 dashboard · 11 admin · 12 motion · 13 responsive */

/* ---------- 1. tokens ---------- */
:root {
  --bg: #09090a;
  --surface: #121214;
  --raised: #1a1a1e;
  --pit: #050506;
  --line: #2a2a30;
  --line-strong: #4a4a54;
  --ink: #f1f1ec;
  --muted: #a4a4a9;
  --acid: #c8ff1e;
  --acid-deep: #5f7f00;
  --acid-ink: #0a0a0a;
  --ok: #6ee28f;
  --warn: #ffb648;
  --err: #ff7a7a;
  --info: #8fbcff;

  --chrome: linear-gradient(180deg, #ffffff 0%, #d5d7dc 40%, #70747c 50%, #c9ccd2 58%, #ffffff 100%);
  --steel: linear-gradient(180deg, #2e2e33 0%, #1c1c20 48%, #121214 52%, #1e1e22 100%);

  --display: "Tektur", "Arial Narrow", "Trebuchet MS", sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --r: 4px;
  --gap: clamp(16px, 4vw, 32px);
  --max: 1180px;
}

/* ---------- 2. base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; background: var(--bg); }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--sans); min-height: 100vh; display: flex; flex-direction: column; overflow-wrap: break-word; }
main { flex: 1; width: 100%; }
h1, h2, h3 { font-family: var(--display); line-height: 1.1; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); font-weight: 700; }
h2 { font-size: clamp(1.35rem, 3vw, 1.75rem); font-weight: 700; }
h3 { font-size: 1.05rem; font-weight: 600; }
p, ul, ol, dl, figure { margin: 0; }
a { color: var(--acid); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: #fff; }
code, pre, .mono { font-family: var(--mono); font-size: 0.9em; }
:not(pre) > code { background: var(--raised); border: 1px solid var(--line); border-radius: 3px; padding: 0.08em 0.35em; overflow-wrap: anywhere; }
strong { font-weight: 650; }
:focus-visible { outline: 2px solid var(--acid); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--acid); color: var(--acid-ink); }
[hidden] { display: none !important; }

.sr { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 12px; top: -80px; z-index: 30; background: var(--acid); color: var(--acid-ink); padding: 9px 16px; border-radius: var(--r); font-weight: 700; }
.skip:focus { top: 12px; color: var(--acid-ink); }
.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.eyebrow, .readout-label { font: 600 0.75rem/1.3 var(--display); letter-spacing: 0.16em; text-transform: uppercase; color: var(--acid); margin: 0; }
.lead { font-size: clamp(1.05rem, 2.1vw, 1.2rem); line-height: 1.55; color: var(--muted); max-width: 50ch; }
.hint { font-size: 0.8125rem; line-height: 1.45; color: var(--muted); }
.hint code { font-size: 0.95em; }
.chrome-text { color: #fff; }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .chrome-text { background: var(--chrome); -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent; }
}

/* ---------- 3. header, footer ---------- */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gap); }
.wrap-wide { max-width: 1480px; }
.page { padding-block: clamp(28px, 5vw, 48px) 72px; }

.site-head { position: sticky; top: 0; z-index: 20; background: rgba(9, 9, 10, 0.94); border-bottom: 1px solid var(--line); box-shadow: 0 1px 0 #000; }
.head-row { display: flex; align-items: center; justify-content: space-between; gap: 6px 20px; flex-wrap: wrap; min-height: 60px; padding-block: 8px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; }
.brand:hover { color: #fff; }
.mark { height: 32px; width: auto; display: block; flex: none; }
.brand-word { font: 500 1.05rem/1 var(--display); letter-spacing: 0.14em; }
.nav { display: flex; align-items: center; flex-wrap: wrap; gap: 2px 4px; font: 500 0.9375rem/1.2 var(--display); letter-spacing: 0.02em; }
.nav > a:not(.btn), .nav-btn { color: var(--ink); text-decoration: none; padding: 8px 11px; border-radius: var(--r); }
.nav > a:not(.btn):hover, .nav-btn:hover { color: var(--acid); }
.nav > a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--acid); border-radius: 0; }
.nav .btn { margin-left: 8px; }
.nav-form { margin: 0; display: flex; }
.nav-btn { font: inherit; background: none; border: 0; cursor: pointer; color: var(--muted); }

.site-foot { margin-top: 64px; padding-block: 30px 40px; font-size: 0.875rem; color: var(--muted); border-top: 1px solid var(--line); background: var(--pit); }
.foot-row { display: grid; gap: 16px; }
.foot-brand { display: flex; align-items: center; gap: 12px; color: var(--ink); font: 500 0.9375rem/1.3 var(--display); letter-spacing: 0.04em; }
.foot-brand .mark { height: 26px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.foot-links a, .foot-legal a { color: var(--ink); }
.foot-links a:hover, .foot-legal a:hover { color: var(--acid); }
.foot-legal { max-width: 90ch; font-family: var(--mono); font-size: 0.75rem; }

.page-head { display: grid; gap: 8px; margin-bottom: 28px; }
.page-head h1 { overflow-wrap: anywhere; }
.page-head-row { grid-template-columns: 1fr auto; align-items: end; }
.block { margin-top: 44px; }
.block-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 20px; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--line-strong); }

/* ---------- 4. controls ---------- */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 700 0.9375rem/1.2 var(--display); letter-spacing: 0.03em; text-decoration: none; white-space: nowrap; cursor: pointer;
  padding: 11px 20px; border-radius: var(--r); border: 1px solid #000;
  background: linear-gradient(180deg, #e0ff6a 0%, #c8ff1e 46%, #a8de00 100%); color: var(--acid-ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7), 0 3px 0 var(--acid-deep);
  transition: transform 0.1s, box-shadow 0.1s;
}
.btn::after { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 40%; pointer-events: none; background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent); transform: translateX(-160%) skewX(-18deg); }
.btn:hover::after, .btn:focus-visible::after { transform: translateX(380%) skewX(-18deg); transition: transform 0.6s ease; }
.btn:hover { color: var(--acid-ink); }
.btn:active { transform: translateY(2px); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7), 0 1px 0 var(--acid-deep); }
.btn[disabled] { cursor: not-allowed; background: var(--raised); color: var(--muted); border-color: var(--line-strong); box-shadow: none; }
.btn[disabled]::after { display: none; }
.btn-ghost { background: var(--steel); color: var(--ink); border-color: var(--line-strong); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 3px 0 #000; }
.btn-ghost:hover { color: #fff; border-color: #9a9aa4; }
.btn-ghost::after { background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.18), transparent); }
.btn-ghost:active { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 1px 0 #000; }
.btn-danger { background: transparent; color: var(--err); border-color: var(--err); box-shadow: none; }
.btn-danger:hover { background: var(--err); color: #000; }
.btn-danger::after { display: none; }
.btn-lg { padding: 14px 26px; font-size: 1.0625rem; }
.btn-sm { padding: 8px 14px; font-size: 0.875rem; }
.btn-xs { padding: 5px 10px; font-size: 0.8125rem; font-weight: 600; box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7), 0 2px 0 var(--acid-deep); }
.btn-xs.btn-ghost { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 2px 0 #000; }
.btn-xs.btn-danger { box-shadow: none; }
.btn-block { width: 100%; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

label { font-size: 0.875rem; font-weight: 650; }
input[type="text"], input[type="email"], input[type="password"], input[type="number"], input[type="file"] {
  font: inherit; color: var(--ink); background: var(--pit);
  border: 1px solid var(--line-strong); border-radius: var(--r); box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.6);
  padding: 9px 12px; width: 100%; min-width: 0;
}
input[type="file"] { padding: 7px; font-size: 0.875rem; color: var(--muted); cursor: pointer; }
input[type="file"]::file-selector-button { font: 600 0.8125rem/1.2 var(--display); letter-spacing: 0.03em; color: var(--ink); background: var(--steel); border: 1px solid var(--line-strong); border-radius: 3px; padding: 7px 12px; margin-right: 12px; cursor: pointer; }
input.mono { font-family: var(--mono); font-size: 0.875rem; }
input::placeholder { color: var(--muted); opacity: 0.8; }
input:focus-visible { outline: 2px solid var(--acid); outline-offset: 0; border-color: var(--acid); }
input[readonly] { background: var(--raised); }
.form { display: grid; gap: 16px; }
.field { display: grid; gap: 6px; align-content: start; }
.check { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; }
.check input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--acid); }
.check label { font-weight: 400; line-height: 1.45; color: var(--ink); }
.inline-form { display: flex; gap: 8px; margin: 0; flex: 0 1 400px; }
.inline-form input { padding-block: 7px; font-size: 0.875rem; }
.inline-form .btn { flex: none; }

.alert { border: 1px solid; border-left-width: 4px; border-radius: var(--r); padding: 11px 14px; font-size: 0.9375rem; background: var(--pit); }
.alert-err { color: var(--err); border-color: var(--err); }
.alert-info { color: var(--ink); border-color: var(--line-strong); border-left-color: var(--acid); }

/* ---------- 5. panels ---------- */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: clamp(16px, 3vw, 24px); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05); }
.holo { border-color: var(--acid); box-shadow: inset 4px 0 0 var(--acid); }
.empty { border: 1px dashed var(--line-strong); border-radius: var(--r); padding: 22px 18px; color: var(--muted); font-size: 0.9375rem; }
.win { background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r); box-shadow: 0 0 0 1px #000, 0 24px 60px -30px #000; overflow: hidden; }
.win-bar, .code-head { display: flex; align-items: center; gap: 10px; min-height: 34px; padding: 4px 12px; background: var(--steel); border-bottom: 1px solid var(--line-strong); font: 600 0.75rem/1 var(--display); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12); }
.win-body { padding: clamp(18px, 4vw, 30px); display: grid; gap: 18px; }

/* ---------- 6. tables, badges, code ---------- */
.table-wrap { position: relative; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 0.9375rem; }
caption { text-align: left; padding: 10px 14px; font: 600 0.75rem/1.3 var(--display); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line); background: var(--pit); }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font: 600 0.6875rem/1.4 var(--display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); background: var(--pit); white-space: nowrap; vertical-align: bottom; }
th.num, td.num { text-align: right; }
td.num, td.mono { font-family: var(--mono); font-size: 0.8125rem; }
tbody tr:last-child > * { border-bottom: 0; }
tbody tr:hover > td { background: rgba(255, 255, 255, 0.03); }
.row-off td { color: var(--muted); }
.cell-actions { text-align: right; }
.cell-actions form, .row-actions form { margin: 0; }
.cell-error, .cell-note { display: block; max-width: 44ch; margin-top: 4px; font-size: 0.8125rem; line-height: 1.4; color: var(--muted); }
.cell-error { color: var(--err); }
.pos { color: var(--ok); }
table.dense { font-size: 0.8438rem; }
table.dense th, table.dense td { padding: 7px 10px; }
table.dense td { vertical-align: middle; }
/* spec sheet: header column on the left, like a hardware data sheet */
.sheet th[scope="row"] { width: 36%; font: 600 0.75rem/1.6 var(--display); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); background: var(--pit); border-right: 1px solid var(--line); white-space: nowrap; }
.sheet th[scope="row"] code { text-transform: none; letter-spacing: 0; font-size: 0.8125rem; background: none; border: 0; padding: 0; color: var(--ink); }

.badge { --c: var(--muted); display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; font: 500 0.75rem/1.5 var(--mono); padding: 0 7px; border-radius: 2px; color: var(--c); border: 1px solid var(--line-strong); background: var(--pit); }
.badge::before { content: ""; width: 6px; height: 6px; background: var(--c); box-shadow: 0 0 6px var(--c); }
.badge-ok { --c: var(--ok); }
.badge-warn { --c: var(--warn); }
.badge-err { --c: var(--err); }
.badge-info { --c: var(--info); }
.badge-warn::before { animation: pulse 1.2s steps(2, jump-none) infinite; }
.tag { font: 500 0.6875rem/1.5 var(--mono); color: var(--muted); border: 1px solid var(--line); border-radius: 2px; padding: 0 5px; white-space: nowrap; }

.code { background: #000; color: #e9e9e4; border: 1px solid var(--line-strong); border-radius: var(--r); min-width: 0; overflow: hidden; }
.code-lang { flex: 1; }
.code pre { margin: 0; padding: 14px 16px; overflow-x: auto; font-size: 0.8125rem; line-height: 1.65; tab-size: 4; }
.code pre:focus-visible { outline-offset: -3px; }
.code code { font-size: inherit; }
.copy { font: 600 0.6875rem/1 var(--display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); background: transparent; border: 1px solid var(--line-strong); border-radius: 3px; padding: 6px 10px; cursor: pointer; }
.copy:hover { color: var(--acid); border-color: var(--acid); }

/* ---------- 7. landing ---------- */
.landing { overflow-x: clip; }
.landing h2 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); }

/* hero */
.hero { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); gap: clamp(28px, 5vw, 72px); align-items: center; padding-block: clamp(44px, 8vw, 104px) clamp(40px, 6vw, 80px); }
.hero-text { display: grid; gap: 24px; justify-items: start; }
.hero h1 { font-size: clamp(2.3rem, 6.6vw, 4.9rem); font-weight: 800; line-height: 0.98; letter-spacing: -0.01em; }
.claim { max-width: 52ch; padding-left: 14px; border-left: 3px solid var(--acid); }
.claim strong { font-family: var(--display); letter-spacing: 0.02em; }
.hero-line { font: 500 0.8125rem/1.6 var(--mono); color: var(--muted); padding-top: 18px; border-top: 1px solid var(--line); width: 100%; }
.hero-art { justify-self: end; width: 100%; max-width: 440px; transform: rotate(-4deg); filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.9)) drop-shadow(0 0 60px rgba(200, 255, 30, 0.09)); }
.hero-badge { display: block; width: 100%; height: auto; }
.sheen { animation: sheen 7s ease-in-out infinite; }

/* demo */
.demo { background: var(--surface); border-block: 1px solid var(--line); padding-block: clamp(32px, 5vw, 56px); }
.demo-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(24px, 4vw, 56px); align-items: stretch; }
.demo-main { display: grid; gap: 14px; align-content: start; }
.demo-lead { color: var(--muted); max-width: 54ch; }
.demo-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 20px; margin-top: 8px; }
.demo-form .check, .demo-submit, .demo-form noscript { grid-column: 1 / -1; }
.demo-submit { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.demo-submit .hint { flex: 1 1 240px; }
.demo-out { display: grid; gap: 14px; align-content: start; background: var(--pit); border: 1px solid var(--line-strong); border-radius: var(--r); padding: 18px; box-shadow: inset 0 0 0 1px #000, inset 0 12px 30px rgba(0, 0, 0, 0.8); min-height: 260px; }
.demo-status { font: 500 0.9375rem/1.5 var(--mono); min-height: 3em; }
.demo-progress { width: 100%; height: 8px; accent-color: var(--acid); }
.demo-result { display: grid; gap: 12px; }
.demo-result audio { width: 100%; }
.eq { display: flex; align-items: stretch; gap: 3px; height: 84px; padding-bottom: 1px; border-bottom: 1px solid var(--line-strong); }
.eq i { flex: 1; background: linear-gradient(to top, var(--acid) 0 62%, #fff 62% 100%); transform-origin: 50% 100%; transform: scaleY(0.06); opacity: 0.55; }
.eq.is-busy i { opacity: 1; animation: eq 0.9s ease-in-out infinite alternate; }
.eq.is-busy i:nth-child(4n + 1) { animation-duration: 0.7s; animation-delay: -0.2s; }
.eq.is-busy i:nth-child(4n + 2) { animation-duration: 1.1s; animation-delay: -0.6s; }
.eq.is-busy i:nth-child(4n + 3) { animation-duration: 0.85s; animation-delay: -0.4s; }
.eq.is-busy i:nth-child(3n) { animation-name: eq-low; animation-delay: -0.9s; }
.eq.is-done i { opacity: 1; transform: scaleY(0.5); }
.eq.is-done i:nth-child(3n) { transform: scaleY(0.82); }
.eq.is-done i:nth-child(4n + 1) { transform: scaleY(0.3); }
.eq.is-done i:nth-child(7n) { transform: scaleY(1); }

/* ticker */
.ticker { overflow: hidden; background: var(--acid); color: var(--acid-ink); font: 700 0.875rem/1 var(--display); letter-spacing: 0.12em; text-transform: uppercase; }
.ticker-track { display: flex; width: max-content; animation: ticker 40s linear infinite; }
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker ul { display: flex; flex: none; list-style: none; margin: 0; padding: 10px 0; }
.ticker li { white-space: nowrap; }
.ticker li::after { content: "//"; margin-inline: 22px; opacity: 0.55; }

/* signal path */
.path { padding-block: clamp(48px, 8vw, 104px) clamp(32px, 5vw, 64px); display: grid; gap: clamp(20px, 3vw, 36px); }
.path-head { display: grid; gap: 10px; }
.pipe svg { display: block; width: 100%; height: auto; }
.pipe-tall { display: none !important; max-width: 420px; }
.pipe-wire path { fill: none; stroke: var(--line-strong); stroke-width: 2; }
.pipe-sig path { fill: none; stroke: var(--acid); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 16 240; animation: signal 2.6s linear infinite; }
.pipe-box rect { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1.5; rx: 3px; }
.pipe-box .pipe-out { stroke: var(--acid); }
.pipe-t text { font: 700 15px var(--display); letter-spacing: 0.08em; fill: var(--ink); }
.pipe-s text { font: 11.5px var(--mono); fill: var(--muted); }
.pipe-l text { font: 11px var(--mono); fill: var(--acid); }
.path-notes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px clamp(24px, 4vw, 56px); color: var(--muted); max-width: 980px; }

/* spec sheet */
.spec { background: var(--pit); border-block: 1px solid var(--line); padding-block: clamp(40px, 6vw, 80px); }
.spec-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(24px, 5vw, 72px); align-items: start; }
.spec-price { display: grid; gap: 14px; color: var(--muted); }
.price { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 14px; font: 900 clamp(4rem, 12vw, 8.5rem)/0.9 var(--display); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; color: var(--ink); }
.price small { font: 600 clamp(1rem, 2.4vw, 1.5rem)/1 var(--display); letter-spacing: 0.06em; color: var(--acid); }

/* retention */
.keep { padding-block: clamp(48px, 8vw, 104px); display: grid; gap: clamp(24px, 4vw, 44px); }
.shout { font-size: clamp(3rem, 12.5vw, 10.5rem) !important; font-weight: 900; line-height: 0.88; letter-spacing: -0.02em; text-transform: uppercase; color: transparent; -webkit-text-stroke: 1.5px var(--ink); }
.keep-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); gap: clamp(24px, 5vw, 72px); align-items: start; }
.life { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 2px solid var(--ink); }
.life li { position: relative; display: grid; gap: 6px; align-content: start; padding: 22px 18px 0 0; }
.life li::before { content: ""; position: absolute; left: 0; top: -2px; width: 2px; height: 14px; background: var(--ink); }
.life li:last-child::before { background: var(--acid); width: 4px; }
.life-t { font: 600 1.05rem/1.2 var(--mono); color: var(--acid); }
.life-d { color: var(--muted); font-size: 0.9375rem; }
.keep-text { display: grid; gap: 14px; color: var(--muted); }

/* calls */
.calls { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); align-items: start; padding-block: clamp(32px, 5vw, 64px); border-top: 1px solid var(--line); }
.calls-text { display: grid; gap: 16px; }
.calls-text > p:last-child { color: var(--muted); }
.calls-code { min-width: 0; }

/* faq */
.faq { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: 20px clamp(24px, 4vw, 56px); padding-block: clamp(40px, 6vw, 80px); border-top: 1px solid var(--line); }
.qa > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: 6px 32px; padding-block: 16px; border-bottom: 1px solid var(--line); }
.qa > div:first-child { padding-top: 0; }
.qa dt { font: 600 1.02rem/1.35 var(--display); }
.qa dd { margin: 0; color: var(--muted); }

.cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 40px; padding-block: clamp(36px, 6vw, 64px); border-top: 2px solid var(--ink); }
.cta h2 { font-size: clamp(1.8rem, 5vw, 3.4rem); font-weight: 800; }

/* ---------- 8. docs & legal ---------- */
.docs { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); padding-block: clamp(28px, 5vw, 48px) 72px; align-items: start; }
.toc { position: sticky; top: 84px; display: grid; gap: 12px; font-size: 0.875rem; max-height: calc(100vh - 110px); overflow-y: auto; }
.toc ol { list-style: none; padding: 0; display: grid; gap: 1px; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 5px 12px; margin-left: -1px; border-left: 2px solid transparent; color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--ink); border-left-color: var(--line-strong); }
.toc a[aria-current="page"] { color: var(--ink); border-left-color: var(--acid); font-weight: 600; }
.doc { min-width: 0; max-width: 800px; }
.doc section { padding-top: 34px; margin-top: 34px; border-top: 1px solid var(--line); display: grid; gap: 14px; }
.doc section > * { min-width: 0; }
.doc h2 { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.doc h2 code { font-size: 0.82em; background: none; border: 0; padding: 0; }
.doc h3 { margin-top: 10px; }
.doc ol, .doc ul { padding-left: 1.3em; display: grid; gap: 6px; }
.doc li::marker { color: var(--muted); }
.verb { font: 700 0.6875rem/1 var(--mono); letter-spacing: 0.06em; color: var(--acid-ink); background: var(--acid); border-radius: 2px; padding: 5px 7px; white-space: nowrap; }
.verb-get { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-strong); }
.note { border: 1px solid var(--line); border-left: 4px solid var(--acid); background: var(--surface); padding: 12px 16px; border-radius: var(--r); }
.summary { display: grid; gap: 10px; padding: 18px 20px; margin-top: 4px; border: 1px solid var(--line-strong); border-left: 4px solid var(--acid); border-radius: var(--r); background: var(--surface); }
.summary h2 { font: 600 0.75rem/1.3 var(--display); letter-spacing: 0.16em; text-transform: uppercase; color: var(--acid); }
.numbered { counter-reset: sec; }
.numbered > section > h2::before { counter-increment: sec; content: counter(sec, decimal-leading-zero); font: 500 0.8em var(--mono); color: var(--acid); }
.details { display: grid; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.details > div { display: grid; grid-template-columns: minmax(90px, 160px) minmax(0, 1fr); gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.details > div:last-child { border-bottom: 0; }
.details dt { font: 600 0.75rem/1.8 var(--display); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.details dd { margin: 0; overflow-wrap: anywhere; }

/* ---------- 9. auth & error ---------- */
.auth, .errpage { display: grid; place-items: start center; padding-block: clamp(32px, 9vw, 96px) 64px; }
.auth-card { width: 100%; max-width: 430px; }
.auth-card h1 { font-size: 1.8rem; }
.auth-alt { font-size: 0.9375rem; color: var(--muted); }
.err-card { width: 100%; max-width: 540px; }
.err-code { font: 900 clamp(5rem, 22vw, 9rem)/0.9 var(--display); letter-spacing: -0.02em; }
.err-msg { overflow-wrap: anywhere; }

/* ---------- 10. dashboard ---------- */
.key-new { display: grid; gap: 12px; margin-bottom: 20px; }
.key-new h2 { font-size: 1.15rem; }
.copy-row { display: flex; gap: 10px; }
.balance { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 20px clamp(24px, 4vw, 48px); }
.balance-sum { font: 800 clamp(2.6rem, 7vw, 3.8rem)/1.05 var(--display); font-variant-numeric: tabular-nums; margin-block: 6px 8px; }
.balance-sum span { font-size: 0.6em; font-weight: 600; color: var(--acid); margin-right: 0.08em; }
.balance-note { display: grid; gap: 8px; align-content: start; padding-left: clamp(0px, 4vw, 48px); border-left: 1px solid var(--line); }

/* ---------- 11. admin ---------- */
.live-status { font: 500 0.75rem/1.4 var(--mono); text-align: right; }
.live-status.is-bad { color: var(--err); }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.tile { background: var(--surface); padding: 12px 14px; display: grid; gap: 2px; align-content: start; }
.tile dt { font: 600 0.6875rem/1.4 var(--display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.tile dd { margin: 0; font: 500 1.45rem/1.25 var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.tile dd.tile-sub { font-size: 0.75rem; color: var(--muted); }
.tiles-sm { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }
.tiles-sm .tile { padding: 9px 13px; }
.tiles-sm .tile dd { font-size: 1.2rem; }
.tile-hot dd { color: var(--acid); }
.sub { font: 600 0.75rem/1.3 var(--display); letter-spacing: 0.16em; text-transform: uppercase; color: var(--acid); margin: 22px 0 8px; }
.row-actions { display: flex; flex-wrap: nowrap; gap: 6px; padding-bottom: 2px; }
.row-form { display: flex; gap: 6px; margin: 0; min-width: 330px; align-items: center; }
.row-form input { padding: 5px 9px; font-size: 0.8125rem; }
.in-amount { flex: 0 0 104px; }
.in-note { flex: 1 1 140px; }
.events td:last-child { width: 100%; }
.row-form .btn { flex: none; }
.row-form-reset { min-width: 340px; }
.notice { margin-bottom: 20px; padding: 14px 16px; border: 1px solid var(--acid); border-left-width: 6px; border-radius: var(--r); background: var(--surface); font: 500 1rem/1.5 var(--mono); overflow-wrap: anywhere; }
.admin-cols { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 0 clamp(20px, 3vw, 36px); align-items: start; }
.settings { display: grid; gap: 22px; justify-items: start; }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px 20px; width: 100%; }
.settings-group { width: 100%; min-width: 0; margin: 0; padding: 16px 0 0; border: 0; border-top: 1px solid var(--line); display: grid; gap: 12px; }
.settings-group legend { padding: 0 10px 0 0; font: 600 1.05rem/1.2 var(--display); }

/* ---------- 11b. admin charts & logs ---------- */
.range { display: inline-flex; border: 1px solid var(--line-strong); border-radius: var(--r); overflow: hidden; }
.range-btn { font: 600 0.8125rem/1.2 var(--display); letter-spacing: 0.04em; color: var(--muted); background: var(--pit); border: 0; border-right: 1px solid var(--line-strong); padding: 8px 14px; cursor: pointer; }
.range-btn:last-child { border-right: 0; }
.range-btn:hover { color: var(--ink); }
.range-btn[aria-pressed="true"] { background: var(--acid); color: var(--acid-ink); }
.range-btn:focus-visible { outline-offset: -3px; outline-color: var(--ink); }

#charts { --s1: #3987e5; --s2: #d95926; --s3: #199e70; }
#charts.is-loading .charts-grid { opacity: 0.55; }
.charts-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.chart { min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 16px 12px; display: grid; gap: 8px; align-content: start; }
.chart-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 16px; }
.chart-head h3 small { font: 400 0.75rem/1 var(--sans); color: var(--muted); margin-left: 6px; }
.chart-sum { font-size: 0.8125rem; color: var(--ink); font-variant-numeric: tabular-nums; }
.chart-legend { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 0.75rem; color: var(--muted); }
.chart-legend li { display: inline-flex; align-items: center; gap: 6px; }
.c-key { display: inline-block; flex: none; width: 14px; height: 3px; border-radius: 2px; background: var(--line-strong); }
.c-key-box { width: 10px; height: 10px; }
.c-key.c-s1 { background: var(--s1); } .c-key.c-s2 { background: var(--s2); } .c-key.c-s3 { background: var(--s3); }
.chart-plot { position: relative; min-height: 200px; border-radius: 2px; touch-action: pan-y; }
.chart-plot svg { display: block; }
.chart-none { display: grid; place-items: center; min-height: 200px; color: var(--muted); font-size: 0.875rem; }
.c-grid { stroke: var(--line); stroke-width: 1; }
.c-base { stroke: var(--line-strong); stroke-width: 1; }
.c-tick { font: 11px var(--sans); fill: var(--muted); font-variant-numeric: tabular-nums; }
.c-line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.c-line.c-s1 { stroke: var(--s1); } .c-line.c-s2 { stroke: var(--s2); }
.c-fill.c-s1, .c-dot.c-s1 { fill: var(--s1); } .c-fill.c-s2, .c-dot.c-s2 { fill: var(--s2); } .c-fill.c-s3 { fill: var(--s3); }
.c-area { fill: var(--s1); opacity: 0.1; }
.c-dot { stroke: var(--surface); stroke-width: 2; }
.c-cross { stroke: var(--muted); stroke-width: 1; }
.c-band { fill: rgba(255, 255, 255, 0.07); }
.chart-tip { position: absolute; top: 6px; z-index: 2; min-width: 150px; pointer-events: none; background: var(--raised); border: 1px solid var(--line-strong); border-radius: var(--r); padding: 8px 10px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.7); font-size: 0.75rem; display: grid; gap: 3px; }
.chart-tip-t { color: var(--muted); white-space: nowrap; }
.chart-tip-r { display: flex; align-items: center; gap: 7px; white-space: nowrap; color: var(--muted); }
.chart-tip-r b { color: var(--ink); font-weight: 650; font-variant-numeric: tabular-nums; }
.chart-table summary { cursor: pointer; font-size: 0.75rem; color: var(--muted); width: max-content; padding: 2px 0; }
.chart-table summary:hover { color: var(--ink); }
.chart-table .table-wrap { margin-top: 8px; max-height: 260px; overflow-y: auto; }
.chart-table th[scope="row"] { font-weight: 400; white-space: nowrap; }
.charts-note { margin-top: 10px; }
#charts-status.is-bad { color: var(--err); }

select { font: inherit; color: var(--ink); background: var(--pit); border: 1px solid var(--line-strong); border-radius: var(--r); padding: 8px 10px; width: 100%; min-width: 0; }
select:focus-visible { outline: 2px solid var(--acid); outline-offset: 0; border-color: var(--acid); }
.logs-filter { display: grid; grid-template-columns: minmax(120px, 1fr) minmax(150px, 1fr) minmax(160px, 2fr) minmax(140px, 1.4fr) auto; gap: 12px 16px; align-items: end; }
.logs-filter input, .logs-filter select { padding-block: 7px; font-size: 0.875rem; }
.logs-filter-go { display: flex; align-items: center; gap: 14px; font-size: 0.875rem; }
.logs-filter-go .btn { flex: none; }
.logs-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px; margin: 18px 0 10px; }
.logs-bar .check { align-items: center; }
.logs-bar .check input { margin: 0; }
.logs-bar .hint:last-child { margin-left: auto; }
.logs td { vertical-align: top; font-size: 0.78rem; line-height: 1.5; }
.logs-src { color: var(--muted); overflow-wrap: anywhere; min-width: 20ch; max-width: 28ch; }
.logs-msg { width: 100%; white-space: pre-wrap; overflow-wrap: anywhere; }
.lvl { display: inline-block; font: 600 0.6875rem/1.6 var(--mono); letter-spacing: 0.04em; padding: 0 6px; border-radius: 2px; border: 1px solid currentColor; color: var(--muted); white-space: nowrap; }
.lvl-info { color: var(--info); }
.lvl-warning { color: var(--warn); }
.lvl-error { color: #0a0a0a; background: var(--err); border-color: var(--err); }
.lvl-row-error td { background: rgba(255, 122, 122, 0.07); }
.lvl-row-error td:first-child { box-shadow: inset 3px 0 0 var(--err); }
.lvl-row-warning td:first-child { box-shadow: inset 3px 0 0 var(--warn); }
.lvl-row-debug td { color: var(--muted); }
.logs-more { margin-top: 14px; }

/* ---------- 12. motion ---------- */
@keyframes pulse { 50% { opacity: 0.25; } }
@keyframes sheen { 0%, 12% { transform: translateX(0) skewX(-20deg); } 55%, 100% { transform: translateX(2200px) skewX(-20deg); } }
@keyframes eq { from { transform: scaleY(0.12); } to { transform: scaleY(1); } }
@keyframes eq-low { from { transform: scaleY(0.25); } to { transform: scaleY(0.7); } }
@keyframes ticker { to { transform: translateX(-50%); } }
@keyframes signal { from { stroke-dashoffset: 256; } to { stroke-dashoffset: 0; } }

/* scroll reveal: app.js adds .pre only to elements below the fold, then .in when they scroll into view */
.pre { opacity: 0; transform: translateY(20px); }
.pre.in { opacity: 1; transform: none; transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .pre { opacity: 1; transform: none; }
  .btn::after, .sheen, .pipe-sig { display: none; }
  .eq.is-busy i { transform: scaleY(0.5); }
  .ticker-track { width: auto; }
  .ticker ul { flex-wrap: wrap; justify-content: center; row-gap: 10px; flex: 1 1 auto; }
  .ticker ul[aria-hidden="true"] { display: none; }
}

/* ---------- 13. responsive ---------- */
@media (max-width: 900px) {
  .charts-grid { grid-template-columns: minmax(0, 1fr); }
  .logs-filter { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logs-filter-q, .logs-filter-go { grid-column: 1 / -1; }
  .hero, .demo-grid, .spec-grid, .keep-grid, .calls, .faq, .docs, .admin-cols, .balance { grid-template-columns: minmax(0, 1fr); }
  .hero-art { justify-self: start; max-width: 300px; order: -1; }
  .toc { position: static; max-height: none; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
  .toc ol { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .balance-note { padding-left: 0; border-left: 0; padding-top: 18px; border-top: 1px solid var(--line); }
}
@media (max-width: 700px) {
  .logs thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .logs tr { display: flex; flex-wrap: wrap; align-items: center; gap: 2px 10px; padding: 8px 10px; border-bottom: 1px solid var(--line); }
  .logs td { padding: 0 !important; border: 0; background: none !important; box-shadow: none !important; }
  .logs-src { min-width: 0; max-width: none; }
  .logs-msg { flex: 1 0 100%; }
  .lvl-row-error { box-shadow: inset 3px 0 0 var(--err); }
  .lvl-row-warning { box-shadow: inset 3px 0 0 var(--warn); }
  .logs-bar .hint:last-child { margin-left: 0; }
  .pipe-wide { display: none !important; }
  .pipe-tall { display: block !important; }
  .path-notes, .demo-form, .qa > div { grid-template-columns: minmax(0, 1fr); }
  .life { grid-template-columns: minmax(0, 1fr); border-top: 0; border-left: 2px solid var(--ink); }
  .life li { padding: 0 0 22px 18px; }
  .life li::before { left: -2px; top: 0; width: 14px; height: 2px; }
  .life li:last-child::before { width: 14px; height: 4px; }
  .page-head-row { grid-template-columns: minmax(0, 1fr); }
  .live-status { text-align: left; }
  .inline-form { flex-basis: 100%; }
  .copy-row { flex-direction: column; }
  th, td { padding: 9px 11px; }
  .sheet th[scope="row"] { white-space: normal; width: 40%; }
  .actions .btn { flex: 1 1 auto; }
  .details > div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}
@media (max-width: 480px) {
  .brand-word { display: none; }
  .nav { font-size: 0.875rem; gap: 0; }
  .nav > a:not(.btn), .nav-btn { padding: 8px 7px; }
  .nav .btn { margin-left: 4px; padding-inline: 10px; }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile dd { font-size: 1.15rem; }
}