/* Studio Ledger site. Palette and type follow the Lovable original:
   graphite-green ground, copper accent, cyan labels, Source Serif 4 display, IBM Plex for text and data.
   Architectural details (rulers, datum marks, detail bubbles, dimension strings, revision clouds) stay faint. */
:root {
  --bg: oklch(15.5% .009 165);
  --card: oklch(19% .011 164);
  --raised: oklch(22% .012 164);
  --fg: oklch(94.5% .012 82);
  --muted: oklch(70% .026 164);
  --dim: oklch(62% .03 164);
  --border: oklch(31% .015 164);
  --hair: oklch(25.5% .013 164);
  --copper: oklch(68% .14 47);
  --copper-hi: oklch(72% .14 47);
  --copper-soft: oklch(48% .085 47);
  --copper-wash: oklch(68% .14 47 / .1);
  --cyan: oklch(75% .045 190);
  --cyan-wash: oklch(75% .045 190 / .1);
  --ok: oklch(69% .105 157);
  --ok-wash: oklch(69% .105 157 / .12);
  --grid: oklch(94.5% .012 82 / .03);
  --display: "Source Serif 4", Georgia, serif;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --r: 4px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --gy: 0px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: 0 var(--gy);
  overflow-x: hidden;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; text-wrap: balance; }
p { margin: 0; }
button { font-family: inherit; }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }
.wrap { max-width: 1200px; margin: 0 auto; padding-inline: 24px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.eyebrow { font: 500 11px/1.4 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--cyan); }
.fine { font-size: 13px; color: var(--muted); }
.dim { color: var(--dim); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--copper); color: #fff; padding: 8px 12px; z-index: 99; }
.skip:focus { left: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  background: var(--copper); color: oklch(98.5% .006 82); border: 1px solid var(--copper);
  font: 500 13px/1 var(--sans); letter-spacing: .02em; text-decoration: none;
  padding: 12px 18px; border-radius: var(--r); cursor: pointer; transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { background: var(--copper-hi); border-color: var(--copper-hi); }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--border); }
.btn.ghost:hover { border-color: var(--muted); background: var(--card); }
.btn.sm { padding: 9px 14px; font-size: 12px; }
.btn.lg { padding: 15px 22px; font-size: 14px; }
.btn svg { width: 11px; height: 11px; fill: currentColor; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 30; background: oklch(15.5% .009 165 / .86); backdrop-filter: blur(10px); border-bottom: 1px solid var(--hair); }
.nav-in { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; flex: none; }
.brand img { border-radius: 3px; }
.brand span { display: flex; flex-direction: column; line-height: 1.2; }
.brand b { font: 600 12px/1.2 var(--sans); letter-spacing: .2em; text-transform: uppercase; }
.brand small { font-size: 11px; color: var(--muted); }
.links { display: flex; gap: 28px; margin-left: auto; }
.links a { font-size: 13px; color: var(--muted); text-decoration: none; transition: color .15s; }
.links a:hover { color: var(--fg); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.menu { display: none; width: 40px; height: 40px; background: none; border: 1px solid var(--border); border-radius: var(--r); cursor: pointer; padding: 0; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.menu span { width: 16px; height: 1.5px; background: var(--fg); transition: transform .2s; }
.menu[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.menu[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

.ruler { position: absolute; top: 0; left: 0; right: 0; height: 22px; display: flex; border-bottom: 1px solid var(--hair); pointer-events: none; }
.ruler span { flex: 1; font: 500 9.5px/22px var(--mono); color: var(--dim); opacity: .55; text-align: center; border-left: 1px solid var(--hair); }

.intro-tag { font: 400 clamp(20px, 2.2vw, 28px)/1.25 var(--display); margin-top: 22px; }
.intro-brief { margin-top: 14px; font-size: 17px; color: var(--muted); max-width: 32em; padding-left: 16px; border-left: 1px solid var(--copper-soft); }
.intro-cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 30px 0 12px; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } }

.story-bar { position: absolute; top: 84px; left: 40px; right: 40px; display: flex; gap: 24px; padding-bottom: 10px; border-bottom: 1px solid rgba(241, 238, 232, .12); font: 500 10.5px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: rgba(241, 238, 232, .6); }
.story-bar #s-code { color: var(--copper); }
.story-bar #s-coord { margin-left: auto; }
.story-rail { position: absolute; left: 40px; top: 50%; transform: translateY(-50%); list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 22px; z-index: 2; --rp: 0; }
.story-rail::before, .story-rail::after { content: ""; position: absolute; left: 13px; top: 14px; width: 1px; }
.story-rail::before { bottom: 14px; background: rgba(241, 238, 232, .18); }
.story-rail::after { height: calc((100% - 28px) * var(--rp)); background: var(--copper); }
.story-rail button { display: flex; align-items: center; gap: 12px; background: none; border: 0; padding: 0; cursor: pointer; color: rgba(241, 238, 232, .5); font: 500 11px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; position: relative; z-index: 1; }
.story-rail b { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 50%; border: 1px solid rgba(241, 238, 232, .3); background: #0b0e0d; font: 500 10px/1 var(--mono); letter-spacing: 0; transition: all .5s; }
.story-rail span { opacity: 0; transform: translateX(-6px); transition: opacity .5s, transform .5s; white-space: nowrap; }
.story-rail button:hover span { opacity: 1; transform: none; }
@media (min-width: 1440px) { .story-rail .on span { opacity: 1; transform: none; } }
.story-rail .on { color: #F1EEE8; }
.story-rail .on b { border-color: var(--copper); color: var(--copper); box-shadow: 0 0 0 4px oklch(68% .14 47 / .15); }
.story-rail .done b { background: var(--copper); border-color: var(--copper); color: #fff; }
.story-slides { position: absolute; inset: 0; pointer-events: none; }
.s-slide { position: absolute; top: 50%; left: max(150px, calc((100vw - 1200px) / 2 + 150px)); width: min(640px, calc(100vw - 200px)); opacity: 0; visibility: hidden; transform: translateY(calc(-50% + 26px)); transition: opacity .8s var(--ease), transform .8s var(--ease), visibility 0s .8s; }
.s-slide.on { opacity: 1; visibility: visible; transform: translateY(-50%); transition: opacity .8s var(--ease), transform .8s var(--ease); pointer-events: auto; }
.s-num { font: 500 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: rgba(241, 238, 232, .6); }
.s-num b { color: var(--copper); }
.s-kicker { margin-top: 28px; font: 500 11px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--cyan); }
.s-kicker.cu { margin-top: 0; color: var(--copper); }
.s-problem { font: 400 clamp(30px, 4.2vw, 56px)/1.08 var(--display); margin-top: 12px; text-decoration: line-through; text-decoration-color: transparent; text-decoration-thickness: 2px; transition: color 1s, text-decoration-color 1s; }
.s-slide.solved .s-problem { color: rgba(241, 238, 232, .45); text-decoration-color: var(--copper); }
.s-solution { margin-top: 28px; padding-left: 18px; border-left: 1px solid var(--copper); max-width: 34em; opacity: 0; transform: translateY(16px); transition: opacity .9s var(--ease) .1s, transform .9s var(--ease) .1s; }
.s-solution p:not(.s-kicker) { font-size: 18px; line-height: 1.6; color: rgba(241, 238, 232, .92); margin-top: 10px; }
.s-solution .btn { margin-top: 20px; }
.s-slide.solved .s-solution { opacity: 1; transform: none; }
.story-progress { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: rgba(241, 238, 232, .1); }
.story-progress i { display: block; height: 100%; width: 0; background: var(--copper); }
#workspace .app { margin-top: 48px; }

/* ---------- entrance: the studio builds itself as you scroll ---------- */
.entrance { position: relative; height: 640vh; background: #090c0b; }
.en-stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; color: #F1EEE8; }
.en-stage::after { content: ""; position: absolute; inset: 72px 16px 16px; border: 1px solid rgba(241, 238, 232, .08); pointer-events: none; }
.en-poster, .en-canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.en-poster.hide { visibility: hidden; }
.en-shade { position: absolute; inset: 0; pointer-events: none; background:
  linear-gradient(90deg, rgba(8, 10, 9, .86) 0%, rgba(8, 10, 9, .55) 36%, rgba(8, 10, 9, .06) 68%),
  linear-gradient(0deg, rgba(8, 10, 9, .5), transparent 32%), linear-gradient(180deg, rgba(8, 10, 9, .55), transparent 24%); }
.en-intro { position: absolute; top: 50%; left: max(40px, calc((100vw - 1200px) / 2 + 24px)); width: min(600px, calc(100vw - 80px)); transform: translateY(-50%); transition: opacity .7s var(--ease), transform .7s var(--ease); z-index: 2; }
.en-intro.gone { opacity: 0; transform: translateY(calc(-50% - 34px)); pointer-events: none; }
.en-intro > * { animation: rise 1.1s var(--ease) both; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } }
.entrance h1 { font: 500 clamp(56px, 8.5vw, 120px)/.9 var(--display); text-transform: uppercase; letter-spacing: -.01em; margin-top: 16px; }
.entrance h1 span { display: block; color: var(--copper); }
.entrance .intro-brief { color: rgba(241, 238, 232, .78); }
.en-cue { margin-top: 26px; display: flex; align-items: center; gap: 12px; font: 500 10.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: rgba(241, 238, 232, .65); }
.en-cue i { width: 40px; height: 1px; background: var(--copper); transform-origin: left; animation: cuex 2.6s ease-in-out infinite; }
@keyframes cuex { 0% { transform: scaleX(0); } 55% { transform: scaleX(1); opacity: 1; } 100% { transform: scaleX(1); opacity: 0; } }
.en-final-h { font: 400 clamp(40px, 6vw, 84px)/1 var(--display); text-transform: uppercase; margin-top: 16px; }
.en-final-h span { color: var(--copper); }
.en-final-p { margin-top: 18px; font-size: 18px; color: rgba(241, 238, 232, .85); max-width: 30em; }
.entrance .story-rail { transition: opacity .6s; }
.entrance.at-intro .story-rail { opacity: 0; pointer-events: none; }
@media (max-height: 700px) and (min-width: 861px) {
  .entrance h1 { font-size: clamp(44px, 11vh, 84px); }
  .entrance .intro-brief { display: none; }
  .intro-tag { margin-top: 14px; }
  .entrance .intro-cta { margin-top: 20px; }
  .s-problem { font-size: clamp(26px, 6vh, 44px); }
  .s-solution p:not(.s-kicker) { font-size: 16px; }
}
/* drawing-sheet frame */
.sheet { margin: 0; border: 1px solid var(--border); background: var(--card); border-radius: var(--r); overflow: hidden; position: relative; }
.sheet::before, .sheet::after { content: ""; position: absolute; width: 14px; height: 14px; border-color: var(--copper); border-style: solid; z-index: 4; pointer-events: none; }
.sheet::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.sheet::after { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.sheet-bar { display: flex; gap: 24px; padding: 10px 16px; border-bottom: 1px solid var(--border); font: 500 10.5px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); background: var(--card); position: relative; z-index: 3; }
.sheet-bar .live { margin-left: auto; color: var(--ok); display: inline-flex; align-items: center; gap: 8px; }
.sheet-bar .live.warn { color: var(--copper); }
.sheet-bar .live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 3px oklch(69% .105 157 / .2); }

/* ---------- hero product mock ---------- */
.app { box-shadow: 0 50px 90px -50px rgba(0, 0, 0, .8); }
.app-body { position: relative; display: grid; grid-template-columns: 190px minmax(0, 1fr); min-height: 470px; overflow: hidden; background: oklch(17% .01 164); }
.app-side { border-right: 1px solid var(--hair); padding: 16px 0; font-size: 12.5px; color: var(--muted); }
.app-brand { display: flex; align-items: center; gap: 8px; padding: 0 16px 14px; border-bottom: 1px solid var(--hair); margin-bottom: 10px; font-size: 11.5px; color: var(--fg); }
.app-side p { font: 500 9.5px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); padding: 12px 16px 6px; }
.app-side ul { list-style: none; margin: 0; padding: 0; }
.app-side li { padding: 6px 16px; display: flex; justify-content: space-between; align-items: center; }
.app-side li.on { color: var(--fg); background: var(--copper-wash); box-shadow: inset 2px 0 0 var(--copper); }
.app-side li i { font: 500 9.5px/16px var(--mono); font-style: normal; background: var(--copper); color: #fff; border-radius: 8px; min-width: 16px; text-align: center; }
.app-main { padding: 20px 22px 22px; min-width: 0; }
.app-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 16px; }
.app-kicker { display: block; font: 500 9.5px/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); }
.app-title { display: block; font: 500 26px/1.15 var(--display); margin-top: 4px; }
.app-btn { font: 500 11.5px/1 var(--sans); background: var(--copper); color: #fff; padding: 9px 12px; border-radius: 3px; white-space: nowrap; }
.app-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 12px; }
.stat { border: 1px solid var(--hair); background: var(--card); border-radius: 3px; padding: 11px 13px; display: flex; flex-direction: column; gap: 2px; }
.stat > span { font: 500 9.5px/1.3 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }
.stat b { font: 500 28px/1.1 var(--mono); font-variant-numeric: tabular-nums; }
.stat small { font-size: 11px; color: var(--muted); }
.stat small.up { color: var(--ok); }
.app-cols { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 10px; }
.panel { border: 1px solid var(--hair); background: var(--card); border-radius: 3px; overflow: hidden; }
.panel-h { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; padding: 10px 13px; border-bottom: 1px solid var(--hair); }
.panel-h b { font: 500 10px/1.3 var(--sans); letter-spacing: .14em; text-transform: uppercase; }
.panel-h span { font-size: 11px; color: var(--dim); }
.reg { width: 100%; border-collapse: collapse; font-size: 12.5px; min-width: 0; }
.reg th { font: 500 9.5px/1.3 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); text-align: left; padding: 8px 13px; border-bottom: 1px solid var(--hair); }
.reg td { padding: 9px 13px; border-bottom: 1px solid var(--hair); white-space: nowrap; }
.reg tr:last-child td { border-bottom: 0; }
.reg tr { transition: background .4s; }
.reg tr.focus { background: var(--copper-wash); box-shadow: inset 2px 0 0 var(--copper); }
.chip { display: inline-block; font: 500 10.5px/1 var(--sans); padding: 4px 8px; border-radius: 10px; border: 1px solid; white-space: nowrap; }
.chip.ok { color: var(--ok); border-color: oklch(69% .105 157 / .4); background: var(--ok-wash); }
.chip.warn { color: var(--copper); border-color: oklch(68% .14 47 / .45); background: var(--copper-wash); }
.chip.info { color: var(--cyan); border-color: oklch(75% .045 190 / .4); background: var(--cyan-wash); }
.app-prog ul { list-style: none; margin: 0; padding: 6px 0; }
.app-prog li { display: grid; grid-template-columns: minmax(0, 1fr) 70px 34px; gap: 10px; align-items: center; padding: 8px 13px; font-size: 12.5px; }
.app-prog li span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-prog li i { height: 4px; background: var(--raised); border-radius: 2px; position: relative; overflow: hidden; }
.app-prog li i::after { content: ""; position: absolute; inset: 0; background: var(--copper); transform-origin: left; transform: scaleX(var(--w)); transition: transform 2.2s var(--ease); }
.app:not(.in) .app-prog li i::after { transform: scaleX(0); }
.app-prog li em { font-style: normal; font-size: 11px; color: var(--muted); text-align: right; }

/* AI overlay inside the mock */
.app-review { position: absolute; top: 0; right: 0; bottom: 0; width: min(500px, 64%); background: var(--card); border-left: 1px solid var(--border); box-shadow: -30px 0 60px -30px rgba(0, 0, 0, .7); transform: translateX(104%); transition: transform 1.1s var(--ease); display: flex; flex-direction: column; z-index: 2; }
.app-review.open { transform: none; }
.ar-head { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 4px; }
.ar-ai { font: 500 9.5px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--copper); }
.ar-head b { font-size: 12.5px; }
.ar-body { padding: 16px 18px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; flex: 1; align-content: start; }
.ar-plan { width: 100%; height: 200px; border: 1px solid var(--hair); background: oklch(16% .009 165); grid-column: 1 / -1; }
.ar-plan .ln { stroke: oklch(85% .015 82 / .75); }
.ar-plan .ln.thin { stroke-width: .8; stroke: oklch(70% .02 164 / .6); }
.ar-plan .bb { fill: oklch(68% .14 47 / .08); stroke: var(--copper); stroke-width: 1.2; stroke-dasharray: 4 3; opacity: 0; transition: opacity .7s; }
.ar-plan .bb.show { opacity: 1; }
.ar-plan .scan { stroke: var(--cyan); stroke-width: 1.5; opacity: 0; }
.app-review.scanning .scan { opacity: .8; animation: arscan 2.6s linear forwards; }
@keyframes arscan { from { transform: translateX(0); } to { transform: translateX(300px); } }
.ar-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 7px; font-size: 12.5px; }
.ar-list li, .checks li { display: flex; align-items: center; gap: 9px; color: var(--dim); transition: color .3s; }
.ar-list li::before, .checks li::before { content: "·"; width: 16px; height: 16px; flex: none; display: grid; place-items: center; font: 600 10px/1 var(--mono); border: 1px solid var(--border); border-radius: 50%; color: var(--dim); transition: all .3s; }
.ar-list li.on, .checks li.on { color: var(--fg); }
.ar-list li.on[data-r="ok"]::before, .checks li.on[data-r="ok"]::before { content: "✓"; color: var(--ok); border-color: oklch(69% .105 157 / .5); background: var(--ok-wash); }
.ar-list li.on[data-r="warn"]::before, .checks li.on[data-r="warn"]::before { content: "!"; color: var(--copper); border-color: oklch(68% .14 47 / .6); background: var(--copper-wash); }
.ar-score { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; border-left: 1px solid var(--hair); padding-left: 16px; }
.ar-score b { font-size: 44px; line-height: 1; }
.ar-score span { font: 500 12px var(--mono); color: var(--dim); }
.ar-score small { margin-top: 10px; font-size: 11.5px; color: var(--copper); }

/* ---------- section scaffolding ---------- */
.sec { padding: 112px 0; border-top: 1px solid var(--hair); position: relative; }
.sec-h { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.bubble { width: 44px; height: 44px; border: 1px solid var(--copper-soft); border-radius: 50%; display: grid; grid-template-rows: 1fr 1fr; flex: none; position: relative; overflow: hidden; }
.bubble::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; border-top: 1px solid var(--copper-soft); }
.bubble b, .bubble i { font: 500 10.5px/1 var(--mono); font-style: normal; display: grid; place-items: center; }
.bubble b { color: var(--copper); align-self: end; padding-bottom: 4px; }
.bubble i { color: var(--dim); font-size: 8.5px; align-self: start; padding-top: 4px; }
.dimline { flex: 1; height: 9px; position: relative; opacity: .5; transform-origin: left; transition: transform 1.8s var(--ease); }
.dimline::before { content: ""; position: absolute; left: 0; right: 0; top: 4px; border-top: 1px solid var(--border); }
.dimline::after { content: ""; position: absolute; inset: 0; border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
.reveal .dimline, .sec-h.reveal .dimline { transform: scaleX(0); }
.in .dimline, .sec-h.in .dimline { transform: none; }
.sec h2 { font: 400 clamp(32px, 5vw, 60px)/1.03 var(--display); text-transform: uppercase; letter-spacing: -.005em; }
.sub { margin-top: 22px; font-size: 18px; color: var(--muted); max-width: 40em; }

.proposed figcaption .mono { color: var(--copper); }

/* ---------- system diagram ---------- */
.sys-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; margin-top: 48px; align-items: center; }
.sys { position: relative; aspect-ratio: 1000 / 620; border: 1px solid var(--hair); border-radius: var(--r); background:
  radial-gradient(circle at 50% 50%, oklch(68% .14 47 / .05), transparent 55%), oklch(16.5% .009 165 / .6); }
.sys-lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.sys-lines line { stroke: var(--border); stroke-width: 1; vector-effect: non-scaling-stroke; transition: stroke .6s, opacity .6s; }
.sys-lines line.core { stroke-dasharray: 3 5; }
.sys-lines line.hot { stroke: var(--copper); opacity: 1; }
.sys.focus .sys-lines line:not(.hot) { opacity: .25; }
.sys-lines .ring { fill: none; stroke: var(--hair); stroke-dasharray: 2 6; vector-effect: non-scaling-stroke; }
.sys-core { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); border: 1px solid var(--copper); background: var(--bg); padding: 12px 18px; text-align: center; border-radius: 2px; z-index: 2; box-shadow: 0 0 0 6px oklch(15.5% .009 165), 0 0 0 7px var(--copper-soft); }
.sys-core .mono { display: block; font-size: 9.5px; color: var(--dim); letter-spacing: .14em; }
.sys-core b { font: 600 12px/1.3 var(--sans); letter-spacing: .2em; text-transform: uppercase; }
.sys-node { position: absolute; transform: translate(-50%, -50%); z-index: 2; font: 500 11.5px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); background: var(--bg); border: 1px solid var(--border); padding: 10px 13px; border-radius: 2px; cursor: pointer; transition: color .5s, border-color .5s, background .5s, opacity .5s; white-space: nowrap; }
.sys-node span { display: block; font: 500 9px/1 var(--mono); color: var(--dim); letter-spacing: .08em; margin-bottom: 5px; }
.sys-node:hover, .sys-node.on { color: var(--fg); border-color: var(--copper); background: oklch(19% .02 60); }
.sys-node.near { color: var(--fg); border-color: var(--copper-soft); }
.sys.focus .sys-node:not(.on):not(.near) { opacity: .45; }
.sys-node.is-ai { border-color: var(--copper-soft); }
.sys-info { border-left: 1px solid var(--border); padding-left: 24px; min-height: 230px; }
.sys-info h3 { font: 500 30px/1.15 var(--display); margin: 10px 0 12px; }
.sys-info p { color: var(--muted); font-size: 15px; }
.sys-links-h { margin-top: 20px !important; font: 500 10px/1 var(--sans) !important; letter-spacing: .14em; text-transform: uppercase; color: var(--dim) !important; }
.sys-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.sys-chips span { font: 500 11px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--copper); border: 1px solid var(--copper-soft); padding: 6px 8px; border-radius: 2px; }

/* ---------- AI review ---------- */
.ai { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: 20px; margin-top: 48px; align-items: stretch; }
.plan { display: block; width: 100%; height: auto; background: oklch(16.5% .009 165); }
.plan .ln { fill: none; stroke: oklch(85% .015 82 / .8); stroke-dasharray: 1; stroke-dashoffset: 1; }
.plan .ln.thin { stroke: oklch(68% .02 164 / .55); stroke-width: .8; }
.plan .grid .ln { stroke: oklch(62% .03 164 / .28); stroke-dasharray: 1; }
.plan .wall { stroke-width: 4; }
.plan .wall2 { stroke-width: 2.4; }
.ai.drawn .plan .ln { stroke-dashoffset: 0; transition: stroke-dashoffset 2.6s var(--ease); }
.ai.drawn .plan .grid .ln { transition-duration: 1.6s; }
.plan text { font: 500 9px var(--mono); fill: var(--muted); text-anchor: middle; }
.plan .gb circle, .plan .sec-mark circle, .plan .north circle { fill: none; stroke: oklch(62% .03 164 / .6); stroke-width: .8; }
.plan .gb text { fill: var(--dim); font-size: 10px; }
.plan .dims text { fill: var(--dim); font-size: 8.5px; }
.plan .rooms text { font: 500 10px var(--sans); letter-spacing: .14em; fill: oklch(85% .015 82 / .8); }
.plan .rooms text.sm { font: 400 8px var(--mono); letter-spacing: 0; fill: var(--dim); }
.plan .tag rect { fill: oklch(16.5% .009 165); stroke: var(--cyan); stroke-width: .8; }
.plan .tag text { font-size: 7.5px; fill: var(--cyan); }
.plan .sec-mark path { stroke: oklch(62% .03 164 / .6); stroke-width: .8; }
.plan .sec-mark text { font-size: 7.5px; fill: var(--dim); }
.plan .north path { fill: var(--muted); }
.plan .north text { fill: var(--dim); }
.plan .tblock rect, .plan .tblock path { fill: none; stroke: oklch(62% .03 164 / .7); stroke-width: .8; }
.plan .tblock text { text-anchor: start; font-size: 9px; fill: oklch(85% .015 82 / .8); }
.plan .tblock text.k { font-size: 6.5px; fill: var(--dim); letter-spacing: .08em; }
.plan > g:not(.bbx), .plan .tag, .plan .rooms, .plan .tblock { transition: opacity 1.2s 1.4s; }
.ai:not(.drawn) .plan .rooms, .ai:not(.drawn) .plan .tag, .ai:not(.drawn) .plan .tblock, .ai:not(.drawn) .plan .gb, .ai:not(.drawn) .plan .dims text, .ai:not(.drawn) .plan .sec-mark, .ai:not(.drawn) .plan .north { opacity: 0; }
.bbx rect { fill: oklch(68% .14 47 / .07); stroke: var(--copper); stroke-width: 1.4; stroke-dasharray: 5 3; }
.bbx text { text-anchor: start; font: 500 8.5px var(--mono); fill: var(--copper); }
.bbx { opacity: 0; transform-box: fill-box; transform-origin: center; transform: scale(1.06); transition: opacity .8s, transform .8s var(--ease); }
.bbx.show { opacity: 1; transform: none; }
.bbx.pulse rect { animation: bbpulse 2.2s ease-in-out 2; }
@keyframes bbpulse { 50% { fill: oklch(68% .14 47 / .2); } }
.ai-scan { fill: var(--cyan); opacity: 0; }
.ai.scanning .ai-scan { opacity: .75; animation: aiscan 4s linear forwards; }
@keyframes aiscan { from { transform: translateX(0); } to { transform: translateX(638px); } }
.ai-panel { border: 1px solid var(--border); background: var(--card); border-radius: var(--r); padding: 20px; display: flex; flex-direction: column; gap: 18px; }
.ai-meta { display: flex; flex-direction: column; gap: 5px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.ai-meta b { font-size: 13.5px; letter-spacing: .04em; text-transform: uppercase; }
.ai-meta span { font-size: 10.5px; color: var(--cyan); letter-spacing: .12em; text-transform: uppercase; }
.ai-group h4 { font: 500 10px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--dim); margin-bottom: 10px; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; font-size: 13.5px; }
.checks li.flag { color: var(--copper); }
.ai-score { margin-top: auto; border-top: 1px solid var(--border); padding-top: 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.ai-score p { display: flex; align-items: baseline; gap: 6px; margin-top: 4px; }
.ai-score p b { font-size: 52px; line-height: 1; }
.ai-score p span { color: var(--dim); font-size: 14px; }
.cloud-note { position: relative; padding: 15px 28px; white-space: nowrap; font-size: 13px; color: var(--copper); opacity: 0; transition: opacity .9s; }
.ai.done .cloud-note { opacity: 1; }
.cloud-note svg { position: absolute; inset: 0; width: 100%; height: 100%; fill: none; stroke: var(--copper); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.cloud-note b { font-family: var(--mono); }
.replay { align-self: flex-start; }
.ai-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 40px; }
.ai-notes > div { border-top: 1px solid var(--copper-soft); padding-top: 16px; }
.ai-notes h3 { font: 500 20px/1.2 var(--display); margin-bottom: 8px; }
.ai-notes p { color: var(--muted); font-size: 14.5px; }
.ai-fine { margin-top: 22px; }

/* ---------- built for architecture ---------- */
.built { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 56px; align-items: start; }
.vs { border-top: 1px solid var(--border); }
.vs-row { display: grid; grid-template-columns: minmax(0, .8fr) 48px minmax(0, 1.3fr); align-items: center; border-bottom: 1px solid var(--hair); padding: 16px 0; }
.vs-row > span:first-child { color: var(--dim); font-size: 15px; }
.vs-row > i { height: 1px; background: var(--border); position: relative; margin-right: 14px; }
.vs-row > i::after { content: ""; position: absolute; right: -1px; top: -3px; border: 3.5px solid transparent; border-left: 5px solid var(--copper-soft); }
.vs-row b { display: block; font-weight: 500; font-size: 16px; }
.vs-row small { display: block; font-size: 13px; color: var(--muted); margin-top: 2px; }
.vs-head { padding: 10px 0; }
.vs-head span { font: 500 10px/1 var(--sans) !important; letter-spacing: .16em; text-transform: uppercase; color: var(--dim) !important; }
.vs-head span:last-child { color: var(--copper) !important; }

/* ---------- project journey ---------- */
.jn { margin-top: 48px; }
.jn-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); }
.jn-steps button { width: 100%; text-align: left; background: none; border: 0; color: var(--dim); font: 500 14px/1.3 var(--sans); padding: 0 12px 16px 0; cursor: pointer; display: flex; flex-direction: column; gap: 6px; transition: color .25s; }
.jn-steps button .mono { font-size: 11px; color: var(--dim); }
.jn-steps button:hover { color: var(--fg); }
.jn-steps button[aria-selected="true"] { color: var(--fg); }
.jn-steps button[aria-selected="true"] .mono { color: var(--copper); }
.jn-track { height: 1px; background: var(--border); position: relative; }
.jn-track i { position: absolute; left: 0; top: 0; height: 1px; background: var(--copper); width: 0; transition: width .9s var(--ease); }
.jn-track i::after { content: ""; position: absolute; right: -4px; top: -4px; width: 9px; height: 9px; border-radius: 50%; border: 1px solid var(--copper); background: var(--bg); }
.jn-stage { position: relative; margin-top: 36px; min-height: 280px; }
.jn-card { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 48px; align-items: center; position: absolute; inset: 0 0 auto; opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity .7s, transform .7s var(--ease); }
.jn-card.on { position: relative; opacity: 1; transform: none; pointer-events: auto; }
.jn-copy h3 { font: 500 32px/1.15 var(--display); margin-bottom: 12px; }
.jn-copy p { color: var(--muted); font-size: 16px; max-width: 30em; }
.mock { border: 1px solid var(--border); background: var(--card); border-radius: var(--r); overflow: hidden; box-shadow: 0 30px 60px -40px rgba(0, 0, 0, .8); }
.mock-h { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 4px; }
.mock-h .mono { font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--dim); }
.mock-h b { font: 500 18px/1.2 var(--display); }
.kv { display: grid; grid-template-columns: 110px minmax(0, 1fr); margin: 0; }
.kv dt, .kv dd { padding: 10px 18px; border-bottom: 1px solid var(--hair); font-size: 13.5px; margin: 0; }
.kv dt { color: var(--dim); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; padding-top: 12px; }
.kv dd { display: flex; align-items: center; gap: 10px; }
.kv dt:nth-last-child(2), .kv dd:last-child { border-bottom: 0; }
.bar { width: 120px; height: 4px; background: var(--raised); border-radius: 2px; position: relative; overflow: hidden; }
.bar::after { content: ""; position: absolute; inset: 0; background: var(--copper); transform-origin: left; transform: scaleX(var(--w)); }
.mini-checks { list-style: none; margin: 0; padding: 8px 0; }
.mini-checks li { display: flex; align-items: center; gap: 10px; padding: 8px 18px; font-size: 13.5px; }
.mini-checks li .mono { margin-left: auto; color: var(--muted); font-size: 12px; }
.mini-checks li::before { content: "✓"; width: 16px; height: 16px; flex: none; display: grid; place-items: center; font: 600 9.5px/1 var(--mono); border-radius: 50%; color: var(--ok); border: 1px solid oklch(69% .105 157 / .5); background: var(--ok-wash); }
.mini-checks li.warn::before { content: "!"; color: var(--copper); border-color: oklch(68% .14 47 / .6); background: var(--copper-wash); }
.mini-checks li.warn { color: var(--copper); }
.pipe-mini { list-style: none; margin: 0; padding: 22px 18px 8px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.pipe-mini li { position: relative; padding-top: 22px; font-size: 12.5px; color: var(--muted); }
.pipe-mini li::before { content: "✓"; position: absolute; top: 0; left: 0; width: 15px; height: 15px; display: grid; place-items: center; font: 600 9px/1 var(--mono); border-radius: 50%; border: 1px solid var(--ok); color: var(--ok); background: var(--bg); z-index: 1; }
.pipe-mini li::after { content: ""; position: absolute; top: 7px; left: 15px; right: 0; border-top: 1px solid var(--ok); opacity: .6; }
.pipe-mini li.last::after { display: none; }
.pipe-mini li.last { color: var(--ok); font-weight: 500; }
.mock-foot { padding: 12px 18px 16px; font-size: 12.5px; color: var(--muted); }
.mini-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mini-stats div { padding: 16px 18px; border-bottom: 1px solid var(--hair); display: flex; flex-direction: column; gap: 4px; }
.mini-stats div:nth-child(odd) { border-right: 1px solid var(--hair); }
.mini-stats div:nth-last-child(-n+2) { border-bottom: 0; }
.mini-stats b { font-size: 26px; font-weight: 500; }
.mini-stats span { font-size: 12px; color: var(--muted); }

/* ---------- firm workflow ---------- */
.flow-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.flow-intro { position: sticky; top: 120px; }
.flow { list-style: none; margin: 0; padding: 0 0 0 34px; position: relative; --p: 0; }
.flow::before { content: ""; position: absolute; left: 8px; top: 10px; bottom: 30px; border-left: 1px dashed var(--border); }
.flow::after { content: ""; position: absolute; left: 8px; top: 10px; width: 1px; height: calc((100% - 40px) * var(--p)); background: var(--copper); }
.flow li { position: relative; padding: 0 0 54px; display: flex; flex-direction: column; gap: 4px; }
.flow li::before { content: ""; position: absolute; left: -31px; top: 5px; width: 11px; height: 11px; border-radius: 50%; border: 1px solid var(--border); background: var(--bg); z-index: 1; transition: border-color .3s, background .3s; }
.flow li.lit::before { border-color: var(--copper); background: var(--copper); box-shadow: 0 0 0 4px var(--copper-wash); }
.flow .who { font: 500 12px/1.2 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--dim); transition: color .3s; }
.flow .act { font: 400 24px/1.25 var(--display); color: var(--dim); transition: color .3s; }
.flow li.lit .who { color: var(--cyan); }
.flow li.lit .act { color: var(--fg); }
.flow li.ai-step.lit .who { color: var(--copper); }
.flow li.end { padding-bottom: 0; }
.flow li.end .act { font-size: 20px; }

/* ---------- product showcase ---------- */
.show-h { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.tabs { display: flex; gap: 6px; margin: 40px 0 18px; flex-wrap: wrap; }
.tabs button { font: 500 12.5px/1 var(--sans); color: var(--muted); background: transparent; border: 1px solid var(--border); padding: 10px 14px; border-radius: var(--r); cursor: pointer; display: inline-flex; gap: 8px; align-items: center; transition: color .15s, border-color .15s, background .15s; }
.tabs button span { font-family: var(--mono); font-size: 10.5px; color: var(--dim); }
.tabs button:hover { color: var(--fg); border-color: var(--muted); }
.tabs button[aria-selected="true"] { color: var(--fg); background: var(--card); border-color: var(--copper); }
.tabs button[aria-selected="true"] span { color: var(--copper); }
.shot-frame { position: relative; overflow: hidden; aspect-ratio: 1600 / 813; background: oklch(16% .009 165); }
.shot-frame img { width: 100%; height: 100%; object-fit: cover; }
.shot-wipe { position: absolute; top: 0; bottom: 0; left: 0; width: 100%; background: oklch(16% .009 165); transform-origin: right; transform: scaleX(0); pointer-events: none; }
.shot-wipe::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 1.5px; background: var(--copper); }
.shot-wipe.go { animation: wipe 1.1s var(--ease) forwards; }
@keyframes wipe { from { transform: scaleX(1); } to { transform: scaleX(0); } }
.shot figcaption { padding: 14px 18px; border-top: 1px solid var(--border); font-size: 15px; color: var(--muted); }
.shot figcaption b { color: var(--fg); font-weight: 500; }

/* ---------- data notes ---------- */
.notes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; margin-top: 48px; }
.notes > div { border-top: 1px solid var(--copper-soft); padding-top: 18px; }
.notes h3 { font: 500 21px/1.2 var(--display); margin-bottom: 10px; }
.notes p { color: var(--muted); font-size: 14.5px; }

/* ---------- pricing ---------- */
.price-h { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: var(--r); padding: 3px; gap: 3px; background: var(--card); }
.seg button { font: 500 13px/1 var(--sans); color: var(--muted); background: none; border: 0; border-radius: 3px; padding: 10px 14px; cursor: pointer; display: inline-flex; gap: 8px; align-items: center; }
.seg button em { font-style: normal; font: 500 10px/1 var(--mono); color: var(--ok); border: 1px solid oklch(69% .105 157 / .45); padding: 3px 5px; border-radius: 2px; }
.seg button[aria-pressed="true"] { background: var(--fg); color: var(--bg); }
.seg button[aria-pressed="true"] em { color: oklch(40% .08 157); border-color: oklch(40% .08 157 / .4); }
.plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 36px; border: 1px solid var(--border); border-radius: var(--r) var(--r) 0 0; background: var(--card); }
.tb { display: flex; flex-direction: column; min-width: 0; position: relative; padding: 24px 22px; }
.tb + .tb { border-left: 1px solid var(--border); }
.tb.pop { background: linear-gradient(180deg, var(--copper-wash), transparent 45%); box-shadow: inset 0 0 0 1.5px var(--copper); }
.tb-badge { position: absolute; top: -1px; right: 18px; font: 600 9.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; background: var(--copper); color: #fff; padding: 6px 8px; border-radius: 0 0 2px 2px; }
.tb-code { font: 500 10px/1 var(--mono); color: var(--dim); letter-spacing: .14em; }
.tb h3 { font: 500 30px/1.1 var(--display); margin-top: 10px; }
.tb-who { font-size: 13.5px; color: var(--muted); margin-top: 4px; }
.tb-price { margin-top: 20px; min-height: 76px; }
.tb-price b { font: 500 34px/1 var(--mono); letter-spacing: -.02em; }
.tb-price small { color: var(--muted); font-size: 13px; margin-left: 4px; }
.tb-price p { font-size: 12.5px; color: var(--muted); margin-top: 8px; }
.tb .btn { margin-top: 18px; width: 100%; }
.tb ul { list-style: none; margin: 22px 0 0; padding: 18px 0 0; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 0; }
.tb li { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; font-size: 13px; padding: 7px 0; border-bottom: 1px solid var(--hair); }
.tb li:last-child { border-bottom: 0; }
.tb li span { color: var(--muted); }
.tb li b { font: 500 12px var(--mono); color: var(--ok); text-align: right; white-space: nowrap; }
.tb li.no span { color: var(--dim); opacity: .7; }
.tb li.no b { color: var(--dim); opacity: .6; }
.ent { border: 1px solid var(--border); border-top: 0; border-radius: 0 0 var(--r) var(--r); background: var(--card); padding: 18px 22px; display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; }
.ent > div { display: flex; flex-direction: column; gap: 4px; }
.ent b { font: 500 21px var(--display); }
.price-note { margin-top: 14px; }

/* ---------- referral ---------- */
#refer { padding-top: 72px; padding-bottom: 72px; }
.refer { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; padding: 36px; border: 1.5px dashed var(--copper-soft); border-radius: var(--r); background: var(--copper-wash); }
.refer-top { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.tag { font: 600 10.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; background: var(--copper); color: oklch(98.5% .006 82); padding: 6px 10px; border-radius: 2px; }
.refer h2 { font-size: clamp(28px, 3.6vw, 44px); margin-top: 18px; }
.refer p { margin-top: 16px; color: var(--muted); max-width: 32em; }
.refer p b { color: var(--fg); font-weight: 500; }
.gifts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; align-content: center; }
.gift { display: flex; flex-direction: column; gap: 4px; background: var(--card); border: 1px solid var(--border); padding: 18px; border-radius: var(--r); }
.gift b { font: 500 34px/1.1 var(--display); color: var(--copper); }
.gift span:last-child { font-size: 13.5px; color: var(--muted); }
.gifts .fine { grid-column: 1 / -1; margin-top: 4px; }

/* ---------- faq ---------- */
.faq-wrap { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); gap: 56px; align-items: start; }
.faq { border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 40px 20px 0; font: 500 19px/1.3 var(--display); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font: 400 22px var(--mono); color: var(--copper); transition: transform .2s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 40px 22px 0; color: var(--muted); }

/* ---------- final ---------- */
.final { padding: 120px 0; border-top: 1px solid var(--hair); text-align: center; background: radial-gradient(60% 80% at 50% 100%, var(--copper-wash), transparent); }
.final h2 { font: 400 clamp(32px, 5.6vw, 72px)/1.03 var(--display); text-transform: uppercase; margin-top: 20px; }
.steps { list-style: none; padding: 0; margin: 44px auto 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 900px; border-top: 1px solid var(--border); text-align: left; }
.steps li { padding: 16px 18px 0 0; font-size: 14.5px; color: var(--muted); }
.steps li + li { padding-left: 18px; border-left: 1px solid var(--hair); }
.steps .mono { display: block; color: var(--copper); font-size: 11px; margin-bottom: 8px; }
.final-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 40px 0 16px; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--hair); padding: 32px 0; }
.foot-in { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.foot nav { display: flex; gap: 22px; flex-wrap: wrap; }
.foot nav a { color: var(--muted); text-decoration: none; font-size: 13px; }
.foot nav a:hover { color: var(--fg); }
.foot .fine { font-size: 11px; letter-spacing: .06em; }

/* ---------- tour dialog ---------- */
.tour-dlg { padding: 0; border: 1px solid var(--border); border-radius: var(--r); background: var(--card); color: var(--fg); width: min(1180px, calc(100vw - 32px)); max-height: calc(100vh - 32px); }
.tour-dlg::backdrop { background: oklch(10% .008 165 / .82); backdrop-filter: blur(3px); }
.tour-h { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.tour-h b { font: 500 11px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.x { background: none; border: 1px solid var(--border); color: var(--fg); width: 32px; height: 32px; border-radius: var(--r); font-size: 18px; cursor: pointer; }
.tour-body { display: grid; grid-template-columns: minmax(0, 1fr) 240px; }
.tour-body video { width: 100%; aspect-ratio: 16 / 9; background: #000; }
.chapters { list-style: none; margin: 0; padding: 0; overflow-y: auto; max-height: min(560px, 50vw); border-left: 1px solid var(--border); }
.chapters button { width: 100%; display: grid; grid-template-columns: 44px 1fr; text-align: left; gap: 8px; font: 13.5px/1.3 var(--sans); color: var(--muted); background: none; border: 0; border-bottom: 1px solid var(--hair); padding: 9px 14px; cursor: pointer; }
.chapters button span { font: 12px/1.5 var(--mono); color: var(--dim); }
.chapters button:hover { color: var(--fg); background: var(--raised); }
.chapters button.on { color: var(--fg); box-shadow: inset 2px 0 0 var(--copper); background: var(--raised); }
.chapters button.on span { color: var(--copper); }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .dimline { opacity: 1 !important; transform: none !important; transition: none !important; }
  .plan .ln { stroke-dashoffset: 0 !important; }
  .shot-frame img { transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .links { gap: 18px; }
  .sys-wrap { grid-template-columns: 1fr; }
  .sys-info { border-left: 0; border-top: 1px solid var(--border); padding: 20px 0 0; min-height: 0; }
  .ai { grid-template-columns: 1fr; }
  .notes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tb:nth-child(3) { border-left: 0; }
  .tb:nth-child(n+3) { border-top: 1px solid var(--border); }
  .built, .faq-wrap { grid-template-columns: 1fr; gap: 32px; }
  .app-body { grid-template-columns: 1fr; }
  .app-side { display: none; }
}
@media (max-width: 860px) {
  .en-shade { background: linear-gradient(180deg, rgba(8, 10, 9, .9) 0%, rgba(8, 10, 9, .66) 46%, rgba(8, 10, 9, .18) 78%, rgba(8, 10, 9, .45) 100%); }
  .en-intro { top: 120px; left: 16px; right: 16px; width: auto; transform: none; }
  .en-intro.gone { transform: translateY(-34px); }
  .story-rail { top: 124px; transform: none; flex-direction: row; gap: 10px; left: 16px; }
  .story-rail::before, .story-rail::after, .story-rail span { display: none; }
  .story-bar { left: 16px; right: 16px; top: 80px; }
  .s-slide { left: 16px; right: 16px; width: auto; top: 176px; transform: translateY(26px); }
  .s-slide.on { transform: none; }
  .links { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 8px 16px 16px; }
  .links.open { display: flex; }
  .links a { padding: 12px 0; font-size: 15px; border-bottom: 1px solid var(--hair); }
  .menu { display: flex; }
  .nav-cta { margin-left: auto; }
  .app-cols { grid-template-columns: 1fr; }
  .app-prog { display: none; }
  .app-review { width: 100%; }
  .ai-notes { grid-template-columns: 1fr; gap: 20px; }
  .flow-wrap { grid-template-columns: 1fr; gap: 36px; }
  .flow-intro { position: static; }
  .jn-steps { display: flex; overflow-x: auto; gap: 18px; scrollbar-width: none; margin-inline: -24px; padding-inline: 24px; }
  .jn-steps::-webkit-scrollbar { display: none; }
  .jn-steps li { flex: none; }
  .jn-steps button { white-space: nowrap; }
  .jn-card { grid-template-columns: 1fr; gap: 24px; }
  .tabs { flex-wrap: nowrap; overflow-x: auto; margin-inline: -24px; padding: 2px 24px 6px; scrollbar-width: none; }
  .tabs::-webkit-scrollbar { display: none; }
  .tabs button { flex: none; }
  .refer { grid-template-columns: 1fr; }
  .tour-body { grid-template-columns: 1fr; }
  .chapters { border-left: 0; border-top: 1px solid var(--border); max-height: 220px; }
}
@media (max-width: 600px) {
  .entrance h1 { font-size: 52px; }
  .en-final-h { font-size: 40px; }
  .en-final-p { font-size: 15.5px; }
  .intro-cta .btn { flex: 1 1 100%; }
  .s-problem { font-size: 27px; }
  .s-solution p:not(.s-kicker) { font-size: 15.5px; }
  .s-kicker { margin-top: 18px; }
  .wrap { padding-inline: 16px; }
  .hide-s { display: none; }
  .ruler span:nth-child(n+6) { display: none; }
  .app-body { min-height: 0; }
  .app-main { padding: 14px; }
  .app-title { font-size: 20px; }
  .app-btn { display: none; }
  .app-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .stat b { font-size: 22px; }
  .reg th:nth-child(3), .reg td:nth-child(3) { display: none; }
  .reg td, .reg th { padding: 8px 10px; }
  .ar-body { grid-template-columns: 1fr 1fr; padding: 12px; gap: 12px; }
  .ar-score b { font-size: 34px; }
  .sec { padding: 76px 0; }
  .sys { aspect-ratio: 1 / 1.05; }
  .sys-node { font-size: 9.5px; padding: 7px 8px; letter-spacing: .1em; }
  .sys-node span { display: none; }
  .sys-core { padding: 8px 10px; }
  .sys-core b { font-size: 10px; letter-spacing: .14em; }
  .checks { grid-template-columns: 1fr 1fr; font-size: 13px; }
  .vs-row { grid-template-columns: 1fr; gap: 4px; }
  .vs-row > i { display: none; }
  .vs-head { display: none; }
  .vs-row > span:first-child::after { content: " →"; color: var(--copper-soft); }
  .notes, .plans, .gifts, .steps { grid-template-columns: 1fr; }
  .tb + .tb { border-left: 0; border-top: 1px solid var(--border); }
  .steps li + li { padding-left: 0; border-left: 0; }
  .steps li { padding: 14px 0; border-bottom: 1px solid var(--hair); }
  .flow .act { font-size: 20px; }
  .refer { padding: 22px 18px; }
  .sheet-bar { gap: 14px; }
  .faq summary { font-size: 17px; }
  .final-cta .btn { flex: 1 1 100%; }
  .tabs, .jn-steps { margin-inline: -16px; padding-inline: 16px; }
}

/* =====================================================================
   Motion system: "an architectural drawing being constructed + a professional
   application operating". Transforms, opacity and SVG strokes only.
   Micro 150ms · functional UI 280ms · data 600ms · storytelling 1000ms.
   ===================================================================== */
:root { --e-out: cubic-bezier(.22, 1, .36, 1); --t-micro: 150ms; --t-ui: 280ms; --t-data: 600ms; --t-story: 1000ms; --bp: oklch(88% .035 215 / .8); }

/* Section reveals: 12px rise, staggered within a section */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity var(--t-data) var(--e-out), transform var(--t-data) var(--e-out); transition-delay: calc(var(--rd, 0) * 90ms); }
.reveal.in { opacity: 1; transform: none; }

/* Blueprint draw: a drafting line traces the panel border (top → right → bottom → left), then settles */
.bp-line { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 6; overflow: visible; }
.bp-line rect { fill: none; stroke: var(--bp); stroke-width: 2; vector-effect: non-scaling-stroke; stroke-dasharray: 1; stroke-dashoffset: 1; }
.bp.drawn .bp-line rect { animation: bpdraw 1.1s var(--e-out) forwards, bpfade .9s ease 1.25s forwards; }
@keyframes bpdraw { to { stroke-dashoffset: 0; } }
@keyframes bpfade { to { stroke-opacity: 0; } }

/* Buttons, cards, links */
.btn { transition: background var(--t-micro), border-color var(--t-micro), color var(--t-micro), transform var(--t-micro) var(--e-out), box-shadow var(--t-ui); }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; transition-duration: 60ms; }
.btn.ghost:hover { box-shadow: inset 0 0 0 1px oklch(70% .026 164 / .25); }
.notes > div, .ai-notes > div { transition: border-color var(--t-ui); }
.notes > div h3, .ai-notes > div h3 { transition: transform var(--t-ui) var(--e-out); }
.notes > div:hover, .ai-notes > div:hover { border-top-color: var(--copper); }
.notes > div:hover h3, .ai-notes > div:hover h3 { transform: translateX(2px); }
.tb { transition: background var(--t-ui); }
.tb:hover { background-color: oklch(20.5% .012 164); }
.gift, .steps li { transition: border-color var(--t-ui), transform var(--t-ui) var(--e-out); }
.gift:hover { border-color: var(--copper-soft); transform: translateY(-1px); }
.foot nav a, .link, .sys-info a { background: linear-gradient(currentColor, currentColor) left bottom / 0 1px no-repeat; transition: background-size var(--t-ui) var(--e-out), color var(--t-micro); padding-bottom: 2px; }
.foot nav a:hover, .link:hover { background-size: 100% 1px; text-decoration: none; }
.faq summary { transition: color var(--t-micro); }
.faq summary:hover { color: var(--copper-hi); }

/* Navigation: hover drift and an active datum line */
.links a { position: relative; padding: 6px 2px; transition: color var(--t-micro), transform var(--t-micro) var(--e-out); }
.links a:hover { transform: translateX(1px); }
.links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--copper); transform: scaleX(0); transform-origin: left; transition: transform var(--t-ui) var(--e-out); }
.links a::before { content: ""; position: absolute; left: 0; bottom: -4px; width: 1px; height: 7px; background: var(--copper); opacity: 0; transition: opacity var(--t-micro); }
.links a:hover::after { transform: scaleX(.3); }
.links a.on { color: var(--fg); }
.links a.on::after { transform: scaleX(1); }
.links a.on::before { opacity: 1; }
/* Jumping to a section: one hairline sweeps under the nav */
.sweep { position: fixed; left: 0; right: 0; top: 64px; height: 1px; z-index: 40; pointer-events: none; background: linear-gradient(90deg, transparent, var(--copper) 30%, var(--bp) 70%, transparent); transform: scaleX(0); transform-origin: left; opacity: 0; }
.sweep.go { animation: sweep 380ms var(--e-out); }
@keyframes sweep { 0% { transform: scaleX(0); opacity: 1; } 65% { transform: scaleX(1); opacity: 1; } 100% { transform: scaleX(1); opacity: 0; } }

/* ---- 1 · Hero: the sheet is drafted, stamped, then titled (~2.2s) ---- */
.en-draft-wrap { position: absolute; inset: 0; pointer-events: none; z-index: 1; transition: opacity .6s var(--e-out); will-change: transform; }
.entrance:not(.at-intro) .en-draft-wrap { opacity: 0; }
.en-draft { width: 100%; height: 100%; display: block; animation: dsettle 1.2s ease 2.4s forwards; }
.en-draft .d { fill: none; stroke: rgba(236, 232, 224, .34); stroke-width: 1; vector-effect: non-scaling-stroke; stroke-dasharray: 1; stroke-dashoffset: 1; animation: dline var(--d, .9s) var(--e-out) var(--w, 0s) forwards; }
.en-draft .d.faint { stroke: rgba(236, 232, 224, .16); }
.en-draft .d.cu { stroke: oklch(68% .14 47 / .6); }
.en-draft text { font: 500 11px var(--mono); fill: rgba(236, 232, 224, .55); text-anchor: middle; letter-spacing: .08em; opacity: 0; animation: dfade .5s ease var(--w, .8s) forwards; }
.en-draft text.l { text-anchor: start; font-size: 10px; }
.en-draft text.s { font-size: 8px; }
@keyframes dline { to { stroke-dashoffset: 0; } }
@keyframes dfade { to { opacity: 1; } }
@keyframes dsettle { to { opacity: .55; } }
.en-stamp { position: relative; display: inline-flex; margin-bottom: 22px; border: 1px solid rgba(236, 232, 224, .2); background: rgba(8, 10, 9, .35); font: 500 10px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: rgba(236, 232, 224, .75); }
.en-intro > .en-stamp { animation: rise .6s var(--e-out) .7s both; }
.en-stamp span { padding: 7px 11px 8px; }
.en-stamp span + span { border-left: 1px solid rgba(236, 232, 224, .2); }
.en-stamp b { display: block; font-size: 7.5px; font-weight: 500; color: rgba(236, 232, 224, .42); margin-bottom: 5px; }
.en-intro > * { animation: rise .7s var(--e-out) both; }
.en-intro > :nth-child(2) { animation-delay: .85s; }
.en-intro > :nth-child(3) { animation-delay: 1s; }
.entrance h1 span { animation: rise .7s var(--e-out) 1.15s both; }
.en-intro > :nth-child(4) { animation-delay: 1.3s; }
.en-intro > :nth-child(5) { animation-delay: 1.45s; }
.en-intro > :nth-child(6) { animation-delay: 1.6s; }
.en-intro > :nth-child(7) { animation-delay: 1.8s; }
@keyframes rise { from { opacity: 0; transform: translateY(12px); } }

/* ---- 2 · Build-your-studio stages ---- */
.s-slide { transform: translateY(calc(-50% + 12px)); transition: opacity .5s var(--e-out), transform .5s var(--e-out), visibility 0s .5s; }
.s-slide.on { transform: translateY(-50%); transition: opacity .5s var(--e-out), transform .5s var(--e-out); }
.s-solution { border-left: 0; position: relative; transition: opacity .55s var(--e-out) .08s, transform .55s var(--e-out) .08s; transform: translateY(12px); }
.s-solution::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 1px; background: var(--copper); transform: scaleY(0); transform-origin: top; transition: transform .6s var(--e-out) .1s; }
.s-slide.solved .s-solution::before { transform: none; }
.story-rail b { transition: border-color .3s, color .3s, background .3s, box-shadow .3s; }

/* Ledger: no bobbing; a small turn of attention when a stage changes, a settled nod at the end */

/* ---- 4 · Dashboard loads like an application ---- */
.app .stat { opacity: 0; transform: translateY(8px); transition: opacity .5s var(--e-out), transform .5s var(--e-out); transition-delay: calc(var(--i, 0) * 70ms + 150ms); }
.app.in .stat { opacity: 1; transform: none; }
.app .reg tbody tr { opacity: 0; transform: translateY(6px); transition: opacity .35s var(--e-out), transform .35s var(--e-out), background .4s; transition-delay: calc(var(--i, 0) * 100ms + 650ms), calc(var(--i, 0) * 100ms + 650ms), 0s; }
.app.in .reg tbody tr { opacity: 1; transform: none; }
.app.rows-in .reg tbody tr { transition-delay: 0s; }
.app .reg .chip { opacity: .3; filter: saturate(0); transition: opacity .3s, filter .3s; transition-delay: calc(var(--i, 0) * 90ms); }
.app.rows-in .reg .chip { opacity: 1; filter: none; }
.app-prog li i::after { transition: transform .9s var(--e-out) calc(var(--i, 0) * 80ms + 900ms); }

/* ---- 5 · AI drawing review: detection, then the report ---- */
.ai.drawn .plan .ln { transition: stroke-dashoffset 1.5s var(--e-out); }
.ai.drawn .plan .grid .ln { transition-duration: 1s; }
.plan > g:not(.bbx):not(.dets):not(.scan-g), .plan .tag, .plan .rooms, .plan .tblock { transition: opacity .7s ease .8s; }
.ai:not(.drawn) .plan .vtitle { opacity: 0; }
.plan .vtitle circle { fill: none; stroke: oklch(62% .03 164 / .7); stroke-width: .8; }
.plan .vtitle path { stroke: oklch(62% .03 164 / .7); stroke-width: .8; }
.plan .vtitle text { fill: oklch(85% .015 82 / .8); }
.plan .vtitle .vn, .plan .vtitle .vs { font-size: 6.5px; }
.plan .vtitle .vt { text-anchor: start; font: 500 8.5px var(--sans); letter-spacing: .14em; }
.plan .vtitle .vsc { text-anchor: start; font-size: 6.5px; fill: var(--dim); }
.ai.scanning .ai-scan { animation: none; }
.plan > g.scan-g, .plan > g.dets { transition: opacity .3s; }
.scan-g { opacity: 0; transition: opacity .3s; }
.ai.scanning .scan-g { opacity: 1; }
.ai-scan { fill: oklch(84% .05 210 / .85); opacity: 1; }
.ai-scan-trail { fill: url(#scanfade); }
.dets rect { fill: oklch(84% .05 210 / .07); stroke: oklch(84% .05 210 / .9); stroke-width: .8; }
.dets text { font: 500 6.5px var(--mono); fill: oklch(84% .05 210 / .95); text-anchor: start; letter-spacing: .06em; }
.det { opacity: 0; transition: opacity .25s ease; }
.det.hit { opacity: 1; }
.det.settled { opacity: .3; transition-duration: .6s; }
.det.focus { opacity: 1; transition-duration: .15s; }
.checks li { transition: color .25s; }
.checks li::before { transition: background .25s, border-color .25s, color .25s; }

/* ---- 6 · One ledger: the system is built connector by connector ---- */
.sys:not(.built) .sys-lines line { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset .45s var(--e-out); }
.sys:not(.built) .sys-lines line.drawn { stroke-dashoffset: 0; }
.sys:not(.built) .sys-lines line.core.drawn { stroke: var(--copper-soft); }
.sys:not(.built) .ring { opacity: 0; }
.sys-lines .ring { transition: opacity .8s ease; }
.sys:not(.built) .sys-node { opacity: 0; transform: translate(-50%, -50%) scale(.97); }
.sys-node { transition: color .5s, border-color .5s, background .5s, opacity .35s var(--e-out), transform .35s var(--e-out); }
.sys:not(.built) .sys-node.lit { opacity: 1; transform: translate(-50%, -50%); border-color: var(--copper); color: var(--fg); }
.sys-core { transition: opacity .4s var(--e-out), transform .4s var(--e-out); }
.sys.pre .sys-core { opacity: 0; transform: translate(-50%, -50%) scale(.97); }

/* ---- 3 · How it works: one project travels the datum line as you scroll ---- */
#journey { height: 300vh; padding: 0; }
#journey > .wrap { position: sticky; top: 64px; min-height: calc(100vh - 64px); display: flex; flex-direction: column; justify-content: center; padding-block: 28px; }
#journey .jn { margin-top: 30px; }
#journey .jn-stage { margin-top: 44px; }
@media (max-height: 780px) and (min-width: 861px) { #journey h2 { font-size: clamp(28px, 4vw, 42px); } #journey .sec-h { margin-bottom: 14px; } #journey .jn-stage { margin-top: 36px; } #journey .jn-copy h3 { font-size: 26px; } #journey .mini-checks li, #journey .kv dt, #journey .kv dd { padding-block: 6px; } }
.jn-track { margin-bottom: 4px; }
.jn-track i { transition: width .25s linear; }
.jn-token { position: absolute; top: 12px; left: 0; transform: translateX(-50%); font: 500 10px/1 var(--mono); letter-spacing: .1em; color: #fff; background: var(--copper); padding: 5px 8px; border-radius: 2px; white-space: nowrap; transition: left .25s linear; }
.jn-token::before { content: ""; position: absolute; left: 50%; top: -8px; height: 8px; border-left: 1px solid var(--copper); }
.jn-stage { margin-top: 52px; }
.jn-steps button.done { color: var(--muted); }
.jn-steps button.done .mono { color: var(--copper-soft); }
.jn-steps button.done .mono::after { content: " ✓"; }
.jn-card { transform: translateY(12px); transition: opacity .5s var(--e-out), transform .5s var(--e-out); }

/* ---- 7 · Built for architecture: fragments settle into a system ---- */
.vs-row:not(.vs-head) > span:first-child { display: inline-block; transition: transform .6s var(--e-out), opacity .6s, color .6s; transition-delay: calc(var(--i, 0) * 110ms); }
.vs.pre .vs-row:not(.vs-head) > span:first-child { transform: translate(var(--fx, 0), var(--fy, 0)) rotate(var(--fr, 0)); opacity: .5; }
.vs-row > i { transform-origin: left; transition: transform .45s var(--e-out); transition-delay: calc(var(--i, 0) * 110ms + 380ms); }
.vs.pre .vs-row > i { transform: scaleX(0); }
.vs-row:not(.vs-head) > span:last-child { transition: opacity .5s var(--e-out), transform .5s var(--e-out); transition-delay: calc(var(--i, 0) * 110ms + 520ms); }
.vs.pre .vs-row:not(.vs-head) > span:last-child { opacity: 0; transform: translateY(8px); }
.vs-head span:last-child { transition: opacity .5s; }
.vs.pre .vs-head span:last-child { opacity: .3; }

/* ---- 8 · Data: local studio folder + optional AI connection ---- */
.net { margin: 48px 0 8px; max-width: 920px; }
.net-cap { font: 500 10.5px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--cyan); margin-bottom: 14px; }
.net-cap.cu { color: var(--copper); margin-bottom: 8px; display: block; }
.net-pcs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.net-pc { display: flex; align-items: center; gap: 10px; border: 1px solid var(--border); background: var(--card); border-radius: 3px; padding: 12px 14px; font: 500 11px/1 var(--mono); letter-spacing: .12em; color: var(--muted); }
.net-pc::before { content: ""; width: 14px; height: 10px; border: 1px solid currentColor; border-radius: 1px; box-shadow: 0 4px 0 -3px currentColor; flex: none; }
.net-bus { position: relative; height: 56px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.net-bus .v { position: relative; }
.net-bus .v::after, .net-bus .t, .net-bus .h { content: ""; position: absolute; background: var(--border); }
.net-bus .v::after { left: 50%; top: 0; height: 28px; width: 1px; }
.net-bus .h { left: 12.5%; right: 12.5%; top: 28px; height: 1px; }
.net-bus .t { left: 37.35%; top: 28px; height: 28px; width: 1px; }   /* lands on the folder centre */
.net-row { position: relative; display: grid; grid-template-columns: 1fr 1.1fr .9fr 1.15fr; align-items: center; }
.net-node { border: 1px solid var(--border); background: var(--card); border-radius: 3px; padding: 14px 16px; display: flex; flex-direction: column; gap: 6px; }
.net-node .mono { font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--fg); }
.net-node small { font-size: 12.5px; color: var(--muted); }
.net-node.folder { grid-column: 2; border-color: var(--copper-soft); }
.net-node.ai { grid-column: 4; }
.net-link { grid-column: 3; position: relative; align-self: stretch; min-height: 54px; }
.net-link b { position: absolute; left: 0; right: 0; top: 50%; border-top: 1px dashed var(--dim); }
.net-link span { position: absolute; left: 50%; top: calc(50% - 20px); transform: translateX(-50%); display: inline-flex; align-items: center; gap: 6px; font: 500 9.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); white-space: nowrap; }
.net-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); animation: netdot 2.6s ease-in-out infinite; animation-play-state: paused; }
.net.vis .net-dot { animation-play-state: running; }
@keyframes netdot { 50% { opacity: .35; } }
/* drawing order: PCs → drops → bus → trunk → folder → link → AI */
.net .net-pc, .net .net-node, .net .net-cap { opacity: 0; transform: translateY(8px); transition: opacity .45s var(--e-out), transform .45s var(--e-out); }
.net .net-pc { transition-delay: calc(var(--i) * 80ms + 100ms); }
.net .net-bus .v::after, .net .net-bus .t { transform: scaleY(0); transform-origin: top; transition: transform .35s var(--e-out); }
.net .net-bus .v::after { transition-delay: calc(var(--i) * 80ms + 450ms); }
.net .net-bus .h { transform: scaleX(0); transition: transform .5s var(--e-out) .75s; }
.net .net-bus .t { transition-delay: 1.15s; }
.net .net-node.folder { transition-delay: 1.35s; }
.net .net-link b { transform: scaleX(0); transform-origin: left; transition: transform .5s var(--e-out) 1.6s; }
.net .net-link span { opacity: 0; transition: opacity .4s 1.9s; }
.net .net-node.ai, .net .net-node.ai .net-cap { transition-delay: 2s; }
.net > .net-cap { transition-delay: 0s; }
.net.in .net-pc, .net.in .net-node, .net.in .net-cap { opacity: 1; transform: none; }
.net.in .net-bus .v::after, .net.in .net-bus .t { transform: none; }
.net.in .net-bus .h, .net.in .net-link b { transform: none; }
.net.in .net-link span { opacity: 1; }

@media (max-width: 860px) {
  .en-draft-wrap, .en-stamp { display: none; }
  .s-slide { transform: translateY(12px); }
  .s-slide.on { transform: none; }
  #journey { height: 260vh; }
  #journey > .wrap { padding-block: 24px; }
  #journey h2 { font-size: 28px; }
  #journey .sec-h { margin-bottom: 12px; }
  #journey .jn { margin-top: 18px; }
  #journey .jn-stage { margin-top: 38px; }
  #journey .jn-card { gap: 14px; }
  #journey .jn-copy h3 { font-size: 22px; margin-bottom: 6px; }
  #journey .jn-copy p { font-size: 14.5px; }
  #journey .mock-h { padding: 10px 14px; }
  #journey .mock-h b { font-size: 16px; }
  #journey .kv dt, #journey .kv dd, #journey .mini-checks li { padding-block: 6px; font-size: 13px; }
  #journey .mini-stats div { padding: 10px 14px; }
  #journey .mini-stats b { font-size: 20px; }
  .net-row { grid-template-columns: 1fr; align-items: stretch; }
  .net-node.folder, .net-node.ai, .net-link { grid-column: 1; }
  .net-link { height: 48px; align-self: auto; }
  .net-bus .t { left: 50%; }
  .net-link b { left: 50%; right: auto; top: 0; bottom: 0; border-top: 0; border-left: 1px dashed var(--dim); }
  .net-node.folder { justify-self: center; width: min(100%, 360px); }
  .net-node.ai { justify-self: center; width: min(100%, 360px); }
  .net .net-link b { transform: scaleY(0); transform-origin: top; }
  .net.in .net-link b { transform: none; }
  .net-link span { left: calc(50% + 12px); top: 18px; transform: none; }
}
@media (max-width: 600px) {
  .net-pcs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .net-bus { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .net-bus .v:nth-child(n+3) { display: none; }
  .net-bus .h { left: 25%; right: 25%; }
  .jn-token { font-size: 9px; padding: 4px 6px; }
}

/* Reduced motion: everything arrives in its final state, without movement */
@media (prefers-reduced-motion: reduce) {
  .reveal, .app .stat, .app .reg tbody tr, .net .net-pc, .net .net-node, .net .net-cap, .jn-card, .s-slide, .s-solution { transform: none !important; transition-duration: .01s !important; transition-delay: 0s !important; }
  .en-draft .d { stroke-dashoffset: 0; animation: none; }
  .en-draft text, .en-stamp { opacity: 1; animation: none; }
  .en-draft { animation: none; opacity: .55; }
  .en-intro > *, .entrance h1 span { animation: none; }
  .bp-line { display: none; }
  .vs.pre .vs-row:not(.vs-head) > span, .vs.pre .vs-row > i, .vs.pre .vs-head span { transform: none !important; opacity: 1 !important; }
  .net .net-bus .v::after, .net .net-bus .t, .net .net-bus .h, .net .net-link b { transform: none !important; transition: none !important; }
  .net-dot { animation: none; }
  .sys:not(.built) .sys-node, .sys.pre .sys-core { opacity: 1; transform: translate(-50%, -50%); }
  .sweep { display: none; }
  .btn:hover, .links a:hover, .gift:hover { transform: none; }
}


/* ---- Entrance fit + closing wave ---- */
.en-poster { top: 64px; height: calc(100% - 64px); object-fit: contain; }
@media (orientation: portrait) { .en-poster { top: auto; bottom: 7%; height: auto; object-fit: contain; } }
@media (min-width: 861px) { .en-intro { top: calc(50% + 32px); } .s-slide { top: calc(50% + 32px); } }
@media (max-height: 820px) and (min-width: 861px) { .en-stamp { display: none; } }
.final { position: relative; overflow: hidden; }
/* the resting frame has 35px of empty space under the hands: sink it so the hands rest on the footer line */
.wave { position: absolute; right: max(24px, calc((100vw - 1200px) / 2 + 24px)); bottom: -35px; width: 176px; height: 240px; background: url(assets/mascot/anim-wave.webp) 0 0 / 8448px 240px no-repeat; }
@media (max-width: 860px) { .final { padding-bottom: 210px; } .wave { right: auto; left: 50%; bottom: -28px; transform: translateX(-50%) scale(.8); transform-origin: bottom center; } }


/* ---- Crossing out: a pen line draws across each line of the struggle, then the solution follows ---- */
.s-slide .s-problem, .s-slide.solved .s-problem { text-decoration: none; color: inherit; }
.strike { background: linear-gradient(var(--copper), var(--copper)) 0 62% / 0% 2.5px no-repeat; transition: background-size .35s ease, color .4s ease; }
.s-slide.solved .strike { background-size: 100% 2.5px; color: rgba(241, 238, 232, .62); transition: background-size 1.15s cubic-bezier(.45, .05, .55, .95), color .6s ease 1.1s; }
.s-slide.solved .s-solution { transition-delay: .75s; }
.s-slide.solved .s-solution::before { transition-delay: .8s; }
@media (prefers-reduced-motion: reduce) { .strike, .s-slide.solved .strike { transition: none; } .s-slide.solved .s-solution { transition-delay: 0s; } }
/* ---------- install & set up ---------- */
.su-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 48px; }
.su-card { border: 1px solid var(--border); border-radius: var(--r); background: var(--card); display: flex; flex-direction: column; transition: border-color var(--t-ui); }
.su-card:hover { border-color: var(--copper-soft); }
.su-h { display: flex; justify-content: space-between; gap: 12px; padding: 10px 18px; border-bottom: 1px solid var(--border); font: 500 10.5px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.su-h .mono { color: var(--copper); }
.su-card h3 { font: 500 22px/1.2 var(--display); padding: 18px 18px 6px; }
.su-steps { list-style: none; counter-reset: su; margin: 0; padding: 6px 18px 20px; display: flex; flex-direction: column; gap: 12px; }
.su-steps li { counter-increment: su; position: relative; padding-left: 30px; font-size: 14.5px; color: var(--muted); }
.su-steps li::before { content: counter(su, decimal-leading-zero); position: absolute; left: 0; top: 2px; font: 500 11px/1 var(--mono); color: var(--copper); }
.su-steps b { color: var(--fg); font-weight: 500; }
.su-steps i { font-style: normal; color: var(--fg); }
.su-steps code { font: 500 12.5px var(--mono); color: var(--fg); background: var(--raised); border: 1px solid var(--hair); border-radius: 3px; padding: 1px 5px; white-space: nowrap; }
.su-notes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; margin-top: 36px; }
.su-notes > div { border-top: 1px solid var(--copper-soft); padding-top: 14px; }
.su-notes h4 { font: 500 18px/1.2 var(--display); margin-bottom: 8px; }
.su-notes p { font-size: 14px; color: var(--muted); }
.su-notes b { color: var(--fg); font-weight: 500; }
.su-more { margin-top: 20px; }
@media (max-width: 1080px) { .su-grid { grid-template-columns: 1fr; } .su-notes { grid-template-columns: repeat(2, minmax(0, 1fr)); } .links { gap: 14px; } }
@media (max-width: 600px) { .su-notes { grid-template-columns: 1fr; } .su-steps code { white-space: normal; word-break: break-all; } }