/* Black Box Capital: site styles. Brand: flight-recorder orange on instrument black. */
:root {
  color-scheme: dark;
  --bg: #0B0C0E;
  --bg-2: #0F1013;
  --surface: #16181C;
  --surface-2: #1E2126;
  --surface-3: #262A30;
  --line: #2B2F36;
  --line-2: #3A3F47;
  --text: #F1EEE7;
  --text-2: #C9C5BD;
  --muted: #8C919A;
  --primary: #FF6B1A;
  --primary-ink: #FF8A47;
  --primary-btn: #FF6B1A; --primary-btn-hover: #FF8A47;
  --on-primary: #0B0C0E;
  --accent: #3DDC97;
  --accent-ink: #3DDC97;
  --warn: #F2B630;
  --danger: #FF5C6C;
  --grid: rgba(241,238,231,.07);
  --s1: #3987e5; --s2: #e85f12; --s3: #23a873; --s4: #9085e9; --s5: #c98500; --s6: #d55181;
  --shadow: 0 1px 0 rgba(255,255,255,.04) inset, 0 20px 40px -24px rgba(0,0,0,.6);
  --radius: 14px;
  --radius-sm: 8px;
  --head: "Archivo", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --maxw: 1180px;
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #F5F3EE; --bg-2: #EEEBE4; --surface: #FFFFFF; --surface-2: #F3F0EA; --surface-3: #E8E4DC;
  --line: #DED9CF; --line-2: #CBC5B9; --text: #15171A; --text-2: #383C42; --muted: #5E636B;
  --primary: #E0560F; --primary-ink: #B8440A; --on-primary: #FFFFFF; --accent: #1A9A68; --accent-ink: #11744E;
  --warn: #855B00; --primary-btn: #C2470C; --primary-btn-hover: #A33C0A; --danger: #C42B3B; --grid: rgba(21,23,26,.08);
  --s1: #2a78d6; --s2: #e0560f; --s3: #1a9a68; --s4: #6250d6; --s5: #c98500; --s6: #d23f78;
  --shadow: 0 1px 2px rgba(20,20,20,.06), 0 16px 32px -24px rgba(20,20,20,.25);
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]):not([data-theme="light"]) {
    color-scheme: light;
    --bg: #F5F3EE; --bg-2: #EEEBE4; --surface: #FFFFFF; --surface-2: #F3F0EA; --surface-3: #E8E4DC;
    --line: #DED9CF; --line-2: #CBC5B9; --text: #15171A; --text-2: #383C42; --muted: #5E636B;
    --primary: #E0560F; --primary-ink: #B8440A; --on-primary: #FFFFFF; --accent: #1A9A68; --accent-ink: #11744E;
    --warn: #855B00; --primary-btn: #C2470C; --primary-btn-hover: #A33C0A; --danger: #C42B3B; --grid: rgba(21,23,26,.08);
    --s1: #2a78d6; --s2: #e0560f; --s3: #1a9a68; --s4: #6250d6; --s5: #c98500; --s6: #d23f78;
    --shadow: 0 1px 2px rgba(20,20,20,.06), 0 16px 32px -24px rgba(20,20,20,.25);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 16px/1.6 var(--body); overflow-x: hidden;
}
img, svg { max-width: 100%; }
a { color: var(--primary-ink); text-underline-offset: 3px; }
a:hover { color: var(--primary); }
h1, h2, h3, h4 { font-family: var(--head); line-height: 1.12; letter-spacing: -.015em; margin: 0 0 .5em; }
h1 { font-size: clamp(2.3rem, 5.6vw, 4.4rem); font-weight: 800; letter-spacing: -.03em; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 750; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }
.mono, .num { font-family: var(--mono); font-feature-settings: "tnum" 1; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.tiny { font-size: .78rem; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--primary-btn); color: var(--on-primary); padding: 8px 12px; border-radius: 6px; z-index: 100; }
.skip:focus { left: 12px; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }

/* ---------- header / nav ---------- */
.site-head { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-family: var(--head); font-weight: 800; letter-spacing: -.01em; white-space: nowrap; }
.brand:hover { color: var(--text); }
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand small { display: block; font: 500 .62rem/1 var(--mono); color: var(--muted); letter-spacing: .12em; text-transform: uppercase; margin-top: 3px; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 2px; }
.nav a { color: var(--text-2); text-decoration: none; font-size: .9rem; font-weight: 500; padding: 8px 11px; border-radius: 8px; }
.nav a:hover { color: var(--text); background: var(--surface-2); }
.nav a[aria-current="page"] { color: var(--text); background: var(--surface-2); box-shadow: inset 0 -2px 0 var(--primary); }
.nav .btn { margin-left: 6px; }
.icon-btn { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 9px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; }
.icon-btn:hover { border-color: var(--line-2); }
.icon-btn svg { width: 18px; height: 18px; }
.menu-btn { display: none; }
@media (max-width: 1020px) {
  .menu-btn { display: inline-grid; margin-left: auto; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 64px; flex-direction: column; align-items: stretch; background: var(--bg); border-bottom: 1px solid var(--line); padding: 10px 16px 18px; gap: 4px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px; font-size: 1rem; }
  .nav .btn { margin: 8px 0 0; text-align: center; justify-content: center; }
  .theme-btn { order: 3; }
}

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; font: 600 .95rem/1 var(--body); padding: 13px 18px; border-radius: 10px; border: 1px solid transparent; text-decoration: none; cursor: pointer; transition: transform .12s ease, background .15s ease, border-color .15s; }
.btn:active { transform: translateY(1px); }
.btn-primary, .nav a.btn-primary { background: var(--primary-btn); color: var(--on-primary); }
.btn-primary:hover, .nav a.btn-primary:hover, .nav a.btn-primary[aria-current="page"] { background: var(--primary-btn-hover); color: var(--on-primary); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--text-2); color: var(--text); background: var(--surface-2); }
.btn-sm { padding: 9px 13px; font-size: .86rem; }
.btn svg { width: 18px; height: 18px; }

/* ---------- sections ---------- */
section { padding: 84px 0; }
.section-tight { padding: 56px 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 600 .74rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--primary-ink); margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--primary); }
.lede { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--text-2); max-width: 62ch; }
.band { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 290px), 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); min-width: 0; }
.card h3 { margin-bottom: .4em; }
.card p:last-child { margin-bottom: 0; }
.card.hot { border-color: color-mix(in srgb, var(--primary) 55%, var(--line)); }
.pill { display: inline-flex; align-items: center; gap: 6px; font: 600 .72rem/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 6px 9px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-2); background: var(--surface-2); }
.pill.orange { color: var(--primary-ink); border-color: color-mix(in srgb, var(--primary) 50%, transparent); background: color-mix(in srgb, var(--primary) 10%, transparent); }
.pill.green { color: var(--accent-ink); border-color: color-mix(in srgb, var(--accent) 45%, transparent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); }
.proj { display: inline-block; font: 600 .66rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--warn); border: 1px dashed color-mix(in srgb, var(--warn) 60%, transparent); padding: 4px 6px; border-radius: 5px; vertical-align: middle; }
.cite { font-size: .78rem; color: var(--muted); }
.cite a { color: var(--muted); }
.icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: color-mix(in srgb, var(--primary) 12%, var(--surface-2)); color: var(--primary-ink); margin-bottom: 14px; }
.icon svg { width: 22px; height: 22px; }
.icon.green { background: color-mix(in srgb, var(--accent) 12%, var(--surface-2)); color: var(--accent-ink); }

/* ---------- hero ---------- */
.hero { padding: 64px 0 72px; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background:
  radial-gradient(700px 380px at 85% 10%, color-mix(in srgb, var(--primary) 18%, transparent), transparent 70%),
  linear-gradient(var(--grid) 1px, transparent 1px) 0 0/ 40px 40px,
  linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0/ 40px 40px;
  mask-image: linear-gradient(#000 40%, transparent); -webkit-mask-image: linear-gradient(#000 40%, transparent); pointer-events: none; }
.hero .wrap { position: relative; display: grid; gap: 40px; grid-template-columns: 1.05fr .95fr; align-items: center; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } }
.hero h1 .o { color: var(--primary); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 18px; }
.hero-note { font-size: .82rem; color: var(--muted); }
.recorder { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 18px; box-shadow: var(--shadow); }
.recorder-top { display: flex; justify-content: space-between; align-items: center; font: 500 .72rem/1 var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 12px; }
.rec-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); display: inline-block; margin-right: 6px; animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .25; } }
.readouts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.readout { background: var(--surface-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; min-width: 0; }
.readout b { display: block; font: 600 1.15rem/1.2 var(--mono); color: var(--text); }
.readout span { font-size: .72rem; color: var(--muted); }
.readout.o b { color: var(--primary-ink); }
.readout.g b { color: var(--accent-ink); }
@media (max-width: 480px) { .readout b { font-size: .95rem; } }
.trace-path { stroke-dasharray: 900; stroke-dashoffset: 900; animation: draw 2.6s ease forwards .2s; }
@keyframes draw { to { stroke-dashoffset: 0; } }

/* ---------- stats ---------- */
.stat { padding: 20px; border-left: 2px solid var(--primary); background: var(--surface); border-radius: 0 var(--radius) var(--radius) 0; border-top: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat b { display: block; font: 700 clamp(1.6rem, 3vw, 2.2rem)/1.1 var(--head); letter-spacing: -.02em; margin-bottom: 6px; }
.stat p { color: var(--text-2); font-size: .92rem; margin-bottom: 8px; }

/* ---------- steps ---------- */
.steps { counter-reset: s; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.step { position: relative; padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.step::before { counter-increment: s; content: "0" counter(s); font: 600 .8rem/1 var(--mono); color: var(--primary-ink); display: block; margin-bottom: 14px; letter-spacing: .1em; }

/* ---------- tools / forms ---------- */
.tool { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); }
.tool-head { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.tool-head h3 { margin: 0; font-size: 1.05rem; }
.tool-body { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); }
.tool-body > * { padding: 22px; min-width: 0; }
.tool-body > :first-child { border-right: 1px solid var(--line); }
@media (max-width: 820px) { .tool-body { grid-template-columns: 1fr; } .tool-body > :first-child { border-right: 0; border-bottom: 1px solid var(--line); } }
.field { margin-bottom: 18px; }
.field label, .field .lbl { display: flex; justify-content: space-between; gap: 8px; font-size: .86rem; font-weight: 600; margin-bottom: 8px; color: var(--text-2); }
.field output, .field .val { font-family: var(--mono); color: var(--text); font-weight: 600; }
.field .hint { font-size: .76rem; color: var(--muted); margin-top: 6px; }
input[type=range] { width: 100%; accent-color: var(--primary); height: 28px; }
input[type=number], input[type=text], input[type=email], input[type=search], select, textarea {
  width: 100%; font: 500 .95rem/1.3 var(--body); color: var(--text); background: var(--bg); border: 1px solid var(--line-2); border-radius: 9px; padding: 10px 12px; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--primary) 70%, transparent); outline-offset: 1px; border-color: transparent; }
.check { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; cursor: pointer; font-size: .9rem; background: var(--bg); }
.check input { accent-color: var(--primary); width: 18px; height: 18px; margin-top: 2px; flex: none; }
.check:hover { border-color: var(--line-2); }
.seg { display: inline-flex; background: var(--bg); border: 1px solid var(--line-2); border-radius: 10px; padding: 3px; gap: 2px; flex-wrap: wrap; }
.seg button { font: 600 .84rem/1 var(--body); color: var(--text-2); background: transparent; border: 0; border-radius: 7px; padding: 9px 12px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--primary-btn); color: var(--on-primary); }
.seg button:hover:not([aria-pressed="true"]) { background: var(--surface-2); color: var(--text); }
.big-out { font: 700 clamp(2rem, 5vw, 3rem)/1 var(--head); letter-spacing: -.02em; margin: 4px 0 8px; }
.big-out.o { color: var(--primary-ink); }
.big-out.g { color: var(--accent-ink); }
.kv { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; font-size: .9rem; }
.kv dt { color: var(--text-2); }
.kv dd { margin: 0; font-family: var(--mono); text-align: right; }
.kv .tot { border-top: 1px solid var(--line-2); padding-top: 8px; font-weight: 700; color: var(--text); }
.chart-box { position: relative; height: 280px; }
.chart-box.tall { height: 340px; }
.chart-box.short { height: 220px; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .8rem; color: var(--text-2); margin: 8px 0 0; padding: 0; list-style: none; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .88rem; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 .74rem/1.2 var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); background: var(--surface-2); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.r, th.r { text-align: right; font-family: var(--mono); white-space: nowrap; }
tbody tr:hover td { background: color-mix(in srgb, var(--surface-2) 60%, transparent); }

/* ---------- FAQ ---------- */
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 32px 16px 0; font-weight: 600; font-size: 1.04rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font: 400 1.5rem/1 var(--mono); color: var(--primary-ink); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-2); max-width: 75ch; }

/* ---------- pricing ---------- */
.price-card { display: flex; flex-direction: column; }
.price-card > .pill { align-self: flex-start; }
.price { font: 800 2.3rem/1 var(--head); letter-spacing: -.02em; margin: 10px 0 4px; }
.price small { font: 500 .9rem var(--body); color: var(--muted); letter-spacing: 0; }
.ticks { list-style: none; padding: 0; margin: 16px 0 20px; font-size: .92rem; color: var(--text-2); }
.ticks li { padding-left: 24px; position: relative; margin-bottom: 8px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 7px; width: 10px; height: 6px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.price-card .btn { margin-top: auto; justify-content: center; }

/* ---------- CTA ---------- */
.cta { border-radius: 22px; padding: clamp(28px, 5vw, 56px); background:
  radial-gradient(600px 300px at 100% 0%, color-mix(in srgb, var(--primary) 26%, transparent), transparent 70%), var(--surface);
  border: 1px solid var(--line); display: grid; gap: 22px; grid-template-columns: 1.4fr auto; align-items: center; }
@media (max-width: 760px) { .cta { grid-template-columns: 1fr; } }
.cta h2 { margin-bottom: .3em; }

/* ---------- page head ---------- */
.page-head { padding: 64px 0 36px; border-bottom: 1px solid var(--line); background:
  linear-gradient(var(--grid) 1px, transparent 1px) 0 0/ 40px 40px, linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0/ 40px 40px; }
.page-head h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--line); padding: 48px 0 36px; margin-top: 40px; background: var(--bg-2); font-size: .9rem; }
.foot-grid { display: grid; gap: 28px; grid-template-columns: 1.4fr repeat(3, 1fr); }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } .foot-grid > :first-child { grid-column: 1 / -1; } }
.site-foot h4 { font: 600 .74rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.site-foot ul { list-style: none; padding: 0; margin: 0; }
.site-foot li { margin-bottom: 8px; }
.site-foot a { color: var(--text-2); text-decoration: none; }
.site-foot a:hover { color: var(--primary-ink); }
.foot-legal { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 20px; color: var(--muted); font-size: .82rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }

/* ---------- notices ---------- */
.notice { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 12px; border: 1px solid color-mix(in srgb, var(--warn) 45%, var(--line)); background: color-mix(in srgb, var(--warn) 7%, var(--surface)); font-size: .9rem; color: var(--text-2); }
.notice svg { width: 20px; height: 20px; flex: none; color: var(--warn); margin-top: 2px; }
.notice b { color: var(--text); }

/* ---------- diagram ---------- */
.chain svg { width: 100%; height: auto; display: block; }
.chain .node rect { fill: var(--surface-2); stroke: var(--line-2); }
.chain .node text { fill: var(--text); font: 600 13px var(--body); }
.chain .node .sub { fill: var(--muted); font: 500 10.5px var(--mono); }
.chain .node.leak { cursor: pointer; }
.chain .node.leak rect { stroke: var(--primary); stroke-dasharray: 4 3; }
.chain .node.leak:hover rect, .chain .node.leak.active rect { fill: color-mix(in srgb, var(--primary) 16%, var(--surface-2)); stroke-dasharray: none; }
.chain .node.leak:focus { outline: none; }
.chain .node.leak:focus rect { stroke-width: 2.5; }
.chain .edge { stroke: var(--line-2); stroke-width: 1.5; fill: none; }
.chain .flow { stroke: var(--accent); stroke-width: 2; fill: none; stroke-dasharray: 3 9; animation: flow 1.6s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -24; } }
.chain .badge { fill: var(--primary); }
.chain .badge-t { fill: var(--on-primary); font: 700 11px var(--mono); }
.leak-panel { min-height: 220px; }

/* ---------- plan doc ---------- */
.doc-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 44px; padding: 40px 0 0; }
@media (max-width: 960px) { .doc-layout { grid-template-columns: minmax(0, 1fr); } }
.doc-layout > * { min-width: 0; }
.toc { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow: auto; font-size: .86rem; padding-right: 6px; }
@media (max-width: 960px) { .toc { position: static; max-height: none; border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: var(--surface); } }
.toc h4 { font: 600 .72rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.toc ol { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 0; }
.toc a { display: block; color: var(--text-2); text-decoration: none; padding: 5px 10px; border-left: 2px solid var(--line); }
.toc a:hover { color: var(--text); }
.toc a.active { color: var(--primary-ink); border-left-color: var(--primary); }
.toc ol ol a { padding-left: 22px; font-size: .8rem; }
.doc { max-width: 860px; }
.doc h2 { margin-top: 2.2em; padding-top: 10px; scroll-margin-top: 80px; font-size: clamp(1.5rem, 2.8vw, 2rem); }
.doc h3 { margin-top: 1.8em; scroll-margin-top: 80px; }
.doc h1 { font-size: clamp(2rem, 4.4vw, 3rem); }
.doc p, .doc li { color: var(--text-2); }
.doc strong { color: var(--text); }
.doc hr { border: 0; border-top: 1px solid var(--line); margin: 36px 0; }
.doc table { margin: 18px 0; font-size: .84rem; }
.doc .tbl { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; margin: 18px 0; background: var(--surface); }
.doc .tbl table { margin: 0; }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc li { margin-bottom: .4em; }
.doc a { word-break: break-word; }
.doc p, .doc li { overflow-wrap: anywhere; }
.doc code { font-family: var(--mono); font-size: .85em; background: var(--surface-2); padding: 2px 5px; border-radius: 5px; }
.doc blockquote { margin: 0; padding: 12px 16px; border-left: 3px solid var(--primary); background: var(--surface); }
.doc-figure { margin: 26px 0; }

/* ---------- heatmap ---------- */
.heat td.c { text-align: center; font-family: var(--mono); font-size: .82rem; white-space: nowrap; }
.heat td.base { outline: 2px solid var(--text); outline-offset: -2px; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- util ---------- */
.flex { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.between { justify-content: space-between; }
.mt0 { margin-top: 0; } .mt1 { margin-top: 12px; } .mt2 { margin-top: 24px; } .mt3 { margin-top: 40px; }
.mb0 { margin-bottom: 0; } .mb2 { margin-bottom: 24px; }
.center { text-align: center; }
.hstack { display: flex; gap: 8px; flex-wrap: wrap; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.timeline { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); }
.gate { padding: 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); position: relative; }
.gate b.when { font: 700 .76rem/1 var(--mono); color: var(--primary-ink); letter-spacing: .1em; text-transform: uppercase; display: block; margin-bottom: 10px; }
.gate p { font-size: .88rem; color: var(--text-2); margin-bottom: 8px; }
.gate .miss { font-size: .8rem; color: var(--muted); border-top: 1px dashed var(--line-2); padding-top: 8px; margin: 0; }
@media print {
  .site-head, .site-foot, .toc, .no-print { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  body { background: #fff; color: #000; }
}