/* Plotkite landing page. A surveyor's sheet: paper, ink linework, one red for measurements. */

:root {
  --paper: #F3F0E8;
  --paper-2: #ECE8DC;
  --card: #FBFAF6;
  --ink: #17160F;
  --ink-2: #4B483E;
  --ink-3: #8A8677;
  --line: #D8D2C2;
  --line-2: #C6BFAC;
  --red: #DF4126;
  --red-soft: rgba(223, 65, 38, .14);
  --green: #5E7F4F;
  --be: #E6DFCB;

  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 18px;
  --max: 1180px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #12120E;
    --paper-2: #1A1A15;
    --card: #1D1C17;
    --ink: #EEEADF;
    --ink-2: #B9B4A5;
    --ink-3: #7C786B;
    --line: #2E2C25;
    --line-2: #423F35;
    --red: #FF5A3C;
    --red-soft: rgba(255, 90, 60, .18);
    --green: #8DB27A;
    --be: #24231C;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #12120E; --paper-2: #1A1A15; --card: #1D1C17; --ink: #EEEADF; --ink-2: #B9B4A5; --ink-3: #7C786B;
  --line: #2E2C25; --line-2: #423F35; --red: #FF5A3C; --red-soft: rgba(255, 90, 60, .18); --green: #8DB27A;
  --be: #24231C; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* faint survey grid behind everything */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: .35;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 70%);
}
a { color: inherit; }
code { font-family: var(--mono); font-size: .88em; background: var(--paper-2); padding: .1em .4em; border-radius: 6px; }
.mono { font-family: var(--mono); letter-spacing: -.01em; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
em { font-family: var(--serif); font-style: italic; font-weight: 400; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  height: 44px; padding: 0 20px; border-radius: 999px;
  font: 500 15px var(--sans); text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: transform .15s, background .15s, border-color .15s;
}
.btn:active { transform: translateY(1px); }
.btn-sm { height: 36px; padding: 0 16px; font-size: 14px; }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: var(--red); color: #fff; }
.btn-line { border-color: var(--line-2); background: var(--card); }
.btn-line:hover { border-color: var(--ink); }
.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { filter: brightness(1.08); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 12px; z-index: 50;
  max-width: var(--max); margin: 12px auto 0; padding: 8px 8px 8px 18px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: color-mix(in srgb, var(--paper) 78%, transparent);
  backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border: 1px solid var(--line); border-radius: 999px;
  width: calc(100% - 32px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 600 17px var(--sans); letter-spacing: -.02em; }
.mark { width: 24px; height: 24px; color: var(--ink); }
.nav-links { display: flex; gap: 26px; font-size: 14px; color: var(--ink-2); }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--ink); }

/* ---------- hero ---------- */
.hero { max-width: var(--max); margin: 0 auto; padding: 88px 16px 40px; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin: 0 0 28px;
  font: 500 13px var(--mono); color: var(--ink-2);
  padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; background: var(--card);
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 0 var(--red); animation: ping 2s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 var(--red-soft); } 70% { box-shadow: 0 0 0 8px transparent; } }
h1 {
  margin: 0; font: 500 clamp(40px, 6.6vw, 82px)/1.02 var(--sans); letter-spacing: -.045em;
}
h1 em { font-size: 1.08em; letter-spacing: -.02em; color: var(--ink-2); }
.lede { max-width: 620px; margin: 24px auto 0; font-size: clamp(16px, 2vw, 19px); color: var(--ink-2); text-wrap: balance; }
.cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 32px; }

/* the map sheet */
.sheet {
  margin: 64px 0 0; text-align: left;
  border: 1px solid var(--line-2); border-radius: var(--radius); background: var(--card);
  box-shadow: 0 1px 0 var(--line), 0 30px 80px -40px rgba(40, 30, 10, .35);
  overflow: hidden;
}
.sheet-head {
  display: flex; justify-content: space-between; gap: 12px; padding: 10px 16px;
  font-size: 12px; color: var(--ink-3); border-bottom: 1px solid var(--line);
}
.sheet-coords { font-variant-numeric: tabular-nums; white-space: pre; }
.map-wrap { position: relative; height: clamp(440px, 52vw, 620px); }
#map { display: block; width: 100%; height: 100%; cursor: crosshair; }
.sheet figcaption { padding: 10px 16px; font-size: 12px; color: var(--ink-3); border-top: 1px solid var(--line); }

/* map styling */
.p { fill: var(--card); stroke: var(--ink); stroke-width: .7; stroke-opacity: .55; vector-effect: non-scaling-stroke; transition: fill .5s, stroke-opacity .5s, opacity .5s; }
.p.be { fill: var(--be); }
.p.out { opacity: .28; }
.p.hit { fill: var(--red-soft); stroke: var(--red); stroke-opacity: 1; stroke-width: 1.4; opacity: 1; }
.p.focus { fill: var(--red); fill-opacity: .55; }
.p:hover { stroke: var(--red); stroke-opacity: 1; stroke-width: 1.6; }
.road { fill: none; stroke: var(--card); stroke-width: 7; stroke-linecap: round; pointer-events: none; }
.road-edge { fill: none; stroke: var(--ink); stroke-opacity: .35; stroke-width: 9; stroke-linecap: round; pointer-events: none; }
.bldg { fill: var(--ink); opacity: .78; pointer-events: none; transition: opacity .5s; }
.n2k { fill: url(#hatch); stroke: var(--green); stroke-width: 1.2; stroke-dasharray: 5 4; pointer-events: none; }
.n2k-label { font: 500 11px var(--mono); fill: var(--green); letter-spacing: .04em; }
.ctry { font: 600 13px var(--mono); fill: var(--ink-3); letter-spacing: .12em; pointer-events: none; }
.sweep { stroke: var(--red); stroke-width: 1.5; opacity: 0; pointer-events: none; }
.sweep.run { animation: sweep 1.2s cubic-bezier(.6, 0, .4, 1) forwards; }
@keyframes sweep { 0% { opacity: .9; transform: translateX(0); } 100% { opacity: 0; transform: translateX(1200px); } }
.pin { fill: var(--red); pointer-events: none; }
.pin-ring { fill: none; stroke: var(--red); stroke-width: 1.5; pointer-events: none; transform-box: fill-box; transform-origin: center; animation: ring 1.6s ease-out infinite; }
@keyframes ring { from { transform: scale(.4); opacity: 1; } to { transform: scale(2.4); opacity: 0; } }

/* console overlay */
.console {
  position: absolute; left: 16px; top: 16px; width: min(400px, calc(100% - 32px));
  background: color-mix(in srgb, var(--ink) 94%, transparent); color: #EDE9DD;
  border-radius: 14px; overflow: hidden; box-shadow: 0 20px 50px -20px rgba(0,0,0,.5);
  backdrop-filter: blur(6px);
}
:root[data-theme="dark"] .console { background: rgba(8, 8, 6, .92); border: 1px solid var(--line-2); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .console { background: rgba(8, 8, 6, .92); border: 1px solid var(--line-2); } }
.console-top, .term-top { display: flex; align-items: center; gap: 12px; padding: 10px 14px; font-size: 11.5px; color: #8E8A7C; border-bottom: 1px solid rgba(255,255,255,.07); }
.lights { display: inline-flex; gap: 6px; }
.lights i { width: 9px; height: 9px; border-radius: 50%; background: #3A3830; }
.lights i:first-child { background: var(--red); }
.console-body { margin: 0; padding: 14px; min-height: 172px; font-size: 12.5px; line-height: 1.65; white-space: pre-wrap; }
.console-foot { padding: 9px 14px; font-size: 12px; color: #8E8A7C; border-top: 1px solid rgba(255,255,255,.07); font-variant-numeric: tabular-nums; }
.console-foot #match-count { color: #fff; }
.sep { margin: 0 8px; opacity: .5; }
.k-fn { color: #fff; }
.k-key { color: #A9C79A; }
.k-num { color: #FFB199; }
.k-str { color: #E9D59A; }
.k-dim { color: #6F6B5F; }
.k-ok { color: #FF7A5E; }
.caret { display: inline-block; width: 7px; height: 14px; background: var(--red); vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* enrich card */
.card-enrich {
  position: absolute; right: 16px; top: 16px; width: min(320px, calc(100% - 32px));
  background: var(--card); border: 1px solid var(--line-2); border-radius: 14px; padding: 14px;
  box-shadow: 0 24px 60px -30px rgba(40, 30, 10, .5);
  animation: rise .45s cubic-bezier(.2, .8, .2, 1);
}
@keyframes rise { from { opacity: 0; transform: translateY(10px) scale(.98); } }
.ce-head { display: flex; justify-content: space-between; align-items: center; }
.ce-call { font-size: 12px; color: var(--red); }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line-2); }
.ce-id { font-size: 13px; margin: 6px 0 10px; color: var(--ink); word-break: break-all; }
.ce-fields { margin: 0; display: grid; gap: 7px; }
.ce-fields > div { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; padding-top: 7px; border-top: 1px dashed var(--line); animation: rise .4s both; }
.ce-fields dt { font: 12px var(--mono); color: var(--ink-2); }
.ce-fields dd { margin: 0; font: 500 13px var(--mono); text-align: right; font-variant-numeric: tabular-nums; }
.ce-fields .src { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; font: 10.5px var(--mono); color: var(--ink-3); }
.conf { flex: 0 0 44px; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.conf b { display: block; height: 100%; background: var(--red); }

.tip {
  position: absolute; pointer-events: none; z-index: 5; font-size: 11.5px; line-height: 1.5;
  background: var(--ink); color: var(--paper); padding: 6px 9px; border-radius: 8px; white-space: nowrap;
  transform: translate(12px, 12px);
}
.legend {
  position: absolute; left: 16px; bottom: 14px; display: flex; flex-wrap: wrap; gap: 6px 14px;
  font-size: 11px; color: var(--ink-2); background: color-mix(in srgb, var(--card) 86%, transparent);
  padding: 7px 11px; border-radius: 10px; border: 1px solid var(--line);
}
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.lg { width: 14px; height: 10px; border-radius: 2px; display: inline-block; }
.lg-border { height: 0; border-top: 2px solid var(--red); }
.lg-be { background: var(--be); border: 1px solid var(--line-2); }
.lg-n2k { background: repeating-linear-gradient(45deg, var(--green) 0 1px, transparent 1px 4px); border: 1px dashed var(--green); }
.lg-hit { background: var(--red-soft); border: 1px solid var(--red); }

/* ---------- sources marquee ---------- */
.sources { max-width: var(--max); margin: 24px auto 0; padding: 0 16px; display: flex; align-items: center; gap: 20px; }
.sources-label { flex: none; font-size: 13px; color: var(--ink-2); padding-right: 20px; border-right: 1px solid var(--line); }
.marquee { overflow: hidden; flex: 1; mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; gap: 8px; width: max-content; animation: marquee 48s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.chip { font: 500 12px var(--mono); letter-spacing: .04em; padding: 6px 11px; border-radius: 8px; background: var(--paper-2); color: var(--ink-2); white-space: nowrap; border: 1px solid var(--line); }
.chip small { color: var(--ink-3); margin-left: 6px; font-size: 10px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: 140px 16px 0; }
.section-head { max-width: 760px; margin-bottom: 48px; }
.kicker { font-size: 12.5px; color: var(--red); margin: 0 0 16px; letter-spacing: .02em; }
h2 { margin: 0; font: 500 clamp(32px, 4.6vw, 54px)/1.04 var(--sans); letter-spacing: -.04em; }
h2 em { font-size: 1.08em; letter-spacing: -.015em; color: var(--ink-2); }
.sub { margin: 20px 0 0; color: var(--ink-2); font-size: 17px; max-width: 600px; text-wrap: pretty; }

/* translate */
.translate { border: 1px solid var(--line-2); border-radius: var(--radius); background: var(--card); padding: 20px; }
.tr-tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--paper-2); border-radius: 999px; margin-bottom: 24px; flex-wrap: wrap; }
.tr-tabs button, .api-list button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.tr-tabs button { font: 500 13px var(--mono); padding: 7px 14px; border-radius: 999px; color: var(--ink-2); }
.tr-tabs button[aria-selected="true"] { background: var(--card); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.tr-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) 120px minmax(0, 1fr); align-items: center; }
.tr-sources { display: grid; gap: 12px; }
.src-row { display: grid; grid-template-columns: 34px 1fr; gap: 4px 12px; align-items: center; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); transition: opacity .3s; }
.src-row.soon { opacity: .55; border-style: dashed; }
.flag { grid-row: span 2; font: 600 11px var(--mono); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 8px; background: var(--ink); color: var(--paper); }
.src-name { font-size: 13px; color: var(--ink-2); }
.src-name small { font-family: var(--mono); color: var(--ink-3); margin-left: 6px; }
.src-val { font: 500 14px var(--mono); overflow-wrap: anywhere; }
.tr-flow svg { width: 100%; height: 240px; display: block; }
.tr-flow path { fill: none; stroke: var(--red); stroke-width: 1.4; stroke-dasharray: 4 6; animation: flow 1.2s linear infinite; vector-effect: non-scaling-stroke; }
@keyframes flow { to { stroke-dashoffset: -20; } }
.tr-out { padding: 24px; border-radius: 14px; background: var(--ink); color: var(--paper); }
.tr-out-label { margin: 0 0 10px; font-size: 12px; color: var(--red); }
.tr-out-value { display: block; background: none; padding: 0; font-size: clamp(16px, 2vw, 22px); color: #fff; overflow-wrap: anywhere; }
:root[data-theme="dark"] .tr-out-value { color: var(--ink); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .tr-out-value { color: var(--ink); } }
.tr-out-note { margin: 12px 0 0; font-size: 14px; color: color-mix(in srgb, var(--paper) 70%, transparent); }
.swap { animation: swap .45s cubic-bezier(.2, .8, .2, 1); }
@keyframes swap { from { opacity: 0; transform: translateY(6px); filter: blur(3px); } }

/* api */
.api { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.3fr); gap: 20px; align-items: start; }
.api-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.api-list button {
  width: 100%; text-align: left; display: grid; grid-template-columns: auto 1fr auto; gap: 4px 12px;
  padding: 18px 20px; border-radius: 14px; border: 1px solid var(--line); background: transparent; transition: background .2s, border-color .2s;
}
.api-list button:hover { border-color: var(--line-2); }
.api-list button[aria-selected="true"] { background: var(--card); border-color: var(--ink); }
.api-list .num { color: var(--ink-3); font-size: 12px; padding-top: 4px; }
.api-name { font-weight: 600; font-size: 18px; letter-spacing: -.02em; }
.route { font-size: 11.5px; color: var(--red); padding-top: 5px; }
.api-desc { grid-column: 2 / -1; color: var(--ink-2); font-size: 14.5px; }
.term { background: var(--ink); color: #EDE9DD; border-radius: var(--radius); overflow: hidden; min-height: 470px; }
:root[data-theme="dark"] .term { background: #0A0A08; border: 1px solid var(--line-2); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .term { background: #0A0A08; border: 1px solid var(--line-2); } }
.term-body { padding: 20px; font-size: 12.8px; line-height: 1.7; white-space: pre-wrap; overflow-wrap: anywhere; }
.t-user { display: block; color: #fff; font-family: var(--sans); font-size: 15px; line-height: 1.5; padding: 12px 14px; margin-bottom: 14px; background: rgba(255,255,255,.06); border-radius: 10px; }
.t-agent { display: block; color: #EDE9DD; font-family: var(--sans); font-size: 14.5px; line-height: 1.55; margin-top: 12px; }
.t-agent sup { color: var(--red); font-family: var(--mono); font-size: 10px; }

/* layers */
.layers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.layer { background: var(--card); padding: 20px; min-height: 176px; display: flex; flex-direction: column; gap: 10px; position: relative; transition: background .2s; }
.layer:hover { background: var(--paper); }
.layer svg { width: 40px; height: 40px; color: var(--ink); }
.layer svg .r { color: var(--red); stroke: var(--red); }
.layer h3 { margin: 0; font-size: 16px; font-weight: 600; letter-spacing: -.02em; }
.layer .field { font: 12px var(--mono); color: var(--ink-3); margin-top: auto; overflow-wrap: anywhere; }
.layer .cc { position: absolute; top: 18px; right: 18px; display: flex; gap: 4px; }
.cc span { font: 500 10px var(--mono); padding: 2px 6px; border-radius: 5px; border: 1px solid var(--line-2); color: var(--ink-2); }
.layer.locked { background: repeating-linear-gradient(-45deg, var(--card) 0 10px, var(--paper) 10px 11px); }
.layer.locked h3 { color: var(--ink-2); }
.layer.locked .cc span { border-style: dashed; }

/* use cases */
.uses { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.use { border: 1px solid var(--line-2); border-radius: var(--radius); background: var(--card); overflow: hidden; display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.use:hover { transform: translateY(-3px); box-shadow: 0 24px 50px -30px rgba(40, 30, 10, .45); }
.use-art { height: 128px; border-bottom: 1px solid var(--line); background: var(--paper); }
.use-art svg { width: 100%; height: 100%; display: block; }
.use-art .a-f { fill: var(--ink-3); }
.use-art .a-f2 { fill: none; stroke: var(--ink); stroke-opacity: .5; stroke-width: 1; }
.use-art .a-l { fill: none; stroke: var(--ink); stroke-opacity: .35; stroke-width: 1; }
.use-art .a-r { fill: var(--red); }
.use-art .a-rl { fill: none; stroke: var(--red); stroke-width: 1.6; }
.use-art .a-rf { fill: var(--red-soft); stroke: var(--red); stroke-width: 1.6; }
.use-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.use h3 { margin: 0; font-size: 17px; font-weight: 600; letter-spacing: -.02em; display: flex; justify-content: space-between; gap: 8px; }
.use h3 small { font: 400 12px var(--mono); color: var(--ink-3); padding-top: 3px; }
.use q { font: italic 21px/1.3 var(--serif); color: var(--ink); quotes: "“" "”"; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.tags span { font: 11.5px var(--mono); padding: 3px 8px; border-radius: 6px; background: var(--paper-2); color: var(--ink-2); }
.tags span.lock { background: none; border: 1px dashed var(--line-2); color: var(--ink-3); }

/* principles */
.principles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; padding-top: 140px; }
.pr { padding: 0 24px 0 0; margin-right: 24px; border-right: 1px solid var(--line); }
.pr:last-child { border-right: 0; margin-right: 0; }
.pr-num { color: var(--red); font-size: 13px; }
.pr h3 { margin: 14px 0 8px; font: 400 30px/1.05 var(--serif); letter-spacing: -.01em; }
.pr p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ledger */
.ledger { border-top: 2px solid var(--ink); }
.lr { display: grid; grid-template-columns: 2fr 1fr .6fr .8fr; align-items: center; gap: 12px; padding: 16px 4px; border-bottom: 1px solid var(--line); font-size: 17px; }
.lr-head { font-size: 11.5px; color: var(--ink-3); padding: 10px 4px; text-transform: uppercase; letter-spacing: .08em; }
.lr .mono { font-size: 14px; color: var(--ink-2); }
.stamp { display: inline-block; font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .12em; padding: 4px 10px; border-radius: 4px; border: 1.5px solid currentColor; transform: rotate(-2deg); }
.stamp.live { color: var(--red); }
.stamp.next { color: var(--ink-2); }
.stamp.plan { color: var(--ink-3); border-style: dashed; }

/* faq */
.faq { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 40px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { list-style: none; cursor: pointer; padding: 22px 40px 22px 0; font-size: 18px; font-weight: 500; letter-spacing: -.015em; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 18px; font: 300 26px var(--sans); color: var(--ink-3); transition: transform .25s; }
details[open] summary::after { transform: rotate(45deg); color: var(--red); }
details p { margin: 0 0 22px; color: var(--ink-2); max-width: 620px; }

/* final */
.final { position: relative; max-width: var(--max); margin: 140px auto 0; border-radius: 24px; overflow: hidden; background: var(--ink); color: var(--paper); width: calc(100% - 32px); }
.final-art { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .5; }
.final-art path { fill: none; stroke: var(--paper); stroke-opacity: .16; stroke-width: 1; }
.final-art .hl { stroke: var(--red); stroke-opacity: .9; stroke-width: 1.5; fill: var(--red); fill-opacity: .14; }
.final-inner { position: relative; padding: clamp(56px, 9vw, 110px) 24px; text-align: center; }
.final h2 { color: var(--paper); }
.final h2 em { color: color-mix(in srgb, var(--paper) 72%, transparent); }
.final .sub { margin: 18px auto 0; color: color-mix(in srgb, var(--paper) 70%, transparent); }
.access-form { display: flex; gap: 8px; justify-content: center; margin: 32px auto 0; max-width: 460px; padding: 6px; border-radius: 999px; background: color-mix(in srgb, var(--paper) 10%, transparent); border: 1px solid color-mix(in srgb, var(--paper) 18%, transparent); }
.access-form input { flex: 1; min-width: 0; background: none; border: 0; outline: 0; color: var(--paper); font: 15px var(--sans); padding: 0 16px; }
.access-form input::placeholder { color: color-mix(in srgb, var(--paper) 45%, transparent); }
.form-msg { margin-top: 14px; font-size: 13px; color: color-mix(in srgb, var(--paper) 80%, transparent); }

/* footer */
.foot { max-width: var(--max); margin: 0 auto; padding: 48px 16px 120px; }
.foot-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.foot-links { display: flex; gap: 22px; font-size: 14px; color: var(--ink-2); }
.foot-links a { text-decoration: none; }
.foot-note { font-size: 12px; color: var(--ink-3); margin-top: 22px; }

/* floating MCP copy */
.copy-mcp {
  position: fixed; right: 20px; bottom: 20px; z-index: 60; display: inline-flex; align-items: center; gap: 8px;
  height: 42px; padding: 0 16px; border-radius: 999px; cursor: pointer; font-size: 13px;
  background: var(--card); color: var(--ink); border: 1px solid var(--line-2);
  box-shadow: 0 12px 30px -12px rgba(40, 30, 10, .35); transition: transform .2s;
}
.copy-mcp:hover { transform: translateY(-2px); }
.copy-mcp svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.4; }
.copy-mcp.done { background: var(--ink); color: var(--paper); }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s, transform .7s cubic-bezier(.2, .8, .2, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .layers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .uses { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
  .pr:nth-child(2) { border-right: 0; margin-right: 0; }
  .api { grid-template-columns: 1fr; }
  .faq { grid-template-columns: 1fr; gap: 0; }
  .tr-grid { grid-template-columns: 1fr; }
  .tr-flow { height: 48px; }
  .tr-flow svg { height: 48px; transform: rotate(90deg) scale(.2, 5); display: none; }
  .tr-flow::before { content: "↓"; display: block; text-align: center; font: 22px var(--mono); color: var(--red); line-height: 48px; }
}
@media (max-width: 640px) {
  .hero { padding-top: 56px; }
  .sheet { margin-left: -4px; margin-right: -4px; }
  .map-wrap { height: auto; display: flex; flex-direction: column; }
  #map { height: 360px; order: 1; }
  .console { position: relative; left: auto; top: auto; width: auto; margin: 12px; order: 2; }
  .card-enrich { position: relative; right: auto; top: auto; width: auto; margin: 0 12px 12px; order: 3; }
  .legend { position: relative; left: auto; bottom: auto; margin: 0 12px 12px; order: 4; }
  .sheet-coords { display: none; }
  .sources { flex-direction: column; align-items: stretch; gap: 12px; }
  .sources-label { border: 0; padding: 0; }
  .section { padding-top: 96px; }
  .layers, .uses, .principles { grid-template-columns: 1fr; }
  .pr { border-right: 0; margin-right: 0; padding: 0 0 28px; border-bottom: 1px solid var(--line); }
  .lr { grid-template-columns: 1.6fr 1fr .9fr; font-size: 15px; }
  .lr > :nth-child(3) { display: none; }
  .access-form { flex-direction: column; border-radius: 18px; }
  .access-form input { height: 44px; }
  .copy-mcp span { display: none; }
  .copy-mcp { width: 42px; padding: 0; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}