/* The agenttail project site. Colours come from the app's themes.css, so the
   theme picker recolours everything; Tail's own styles come from tail.css. */
:root {
  --wrap: 1180px;
  --radius: 14px;
  --glow: color-mix(in srgb, var(--green) 35%, transparent);
  --card: color-mix(in srgb, var(--bg-2) 82%, transparent);
  --agent-0: #37f28a; --agent-1: #ff6bd6; --agent-2: #5aa9ff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; min-height: 100vh; overflow-x: hidden;
  background: var(--bg); color: var(--text);
  font: 15px/1.6 var(--mono);
  transition: background .5s, color .5s;
}
::selection { background: color-mix(in srgb, var(--green) 30%, transparent); }
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }
code, kbd { font-family: var(--mono); }
code { padding: 1px 6px; border-radius: 5px; background: var(--bg-3); color: var(--text-strong); font-size: .9em; }
kbd { padding: 0 6px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; background: var(--bg-2); color: var(--text-strong); font-size: .85em; }
b { color: var(--text-strong); }
.amber { color: var(--amber); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 100; padding: 8px 12px; background: var(--bg-2); }

#rain { position: fixed; inset: 0; z-index: 0; width: 100%; height: 100%; opacity: .55; pointer-events: none; }
main, .foot, .nav { position: relative; z-index: 1; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 22px;
  padding: 12px max(20px, calc((100vw - var(--wrap)) / 2));
  background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text-strong); font-weight: 700; letter-spacing: .02em; }
.brand:hover { text-decoration: none; }
.brand svg { width: 34px; height: 25px; overflow: visible; }
.b-chev { fill: none; stroke: var(--green); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; }
.b-eye circle { fill: var(--green); }
.b-eye .b-pupil { fill: var(--bg-deep); transition: transform .15s; }
.b-dots { fill: var(--green); }
.b-dots circle { animation: dot-wave 1.8s ease-in-out infinite; }
.b-dots circle:nth-child(2) { animation-delay: .2s; }
.b-dots circle:nth-child(3) { animation-delay: .4s; }
@keyframes dot-wave { 50% { transform: translateX(2px); } }
.links { display: flex; gap: 18px; margin-left: auto; }
.links a { color: var(--muted); font-size: 13px; letter-spacing: .04em; }
.links a:hover { color: var(--text-strong); text-decoration: none; }
.gh { display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--text-strong); font-size: 13px; }
.gh svg { width: 16px; height: 16px; fill: currentColor; }
.gh:hover { border-color: var(--green); text-decoration: none; box-shadow: 0 0 18px var(--glow); }

/* ---------- shared blocks ---------- */
.block { max-width: var(--wrap); margin: 0 auto; padding: 110px 20px 40px; }
.sec-head { max-width: 760px; margin: 0 auto 40px; text-align: center; }
.sec-head.left { margin: 0 0 26px; text-align: left; }
.sec-head h2 { margin: 6px 0 12px; color: var(--text-strong); font-size: clamp(26px, 3.6vw, 40px); line-height: 1.15; letter-spacing: -.01em; }
.sec-head p { color: var(--muted); }
.eyebrow { margin: 0; color: var(--green); font-size: 12px; letter-spacing: .28em; text-transform: uppercase; }
.eyebrow::before { content: '// '; opacity: .6; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.split.rev > :first-child { order: 0; }
.note { margin-top: 14px; color: var(--muted); font-size: 12.5px; text-align: center; }
.ticks { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; }
.ticks li { position: relative; padding-left: 26px; color: var(--text); }
.ticks li::before { content: '›'; position: absolute; left: 4px; top: -2px; color: var(--green); font-size: 20px; font-weight: 700; }

.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 12px 20px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--bg-2); color: var(--text-strong);
  font: 600 14px var(--mono); cursor: pointer; transition: transform .15s, box-shadow .2s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; border-color: var(--green); box-shadow: 0 10px 30px -8px var(--glow); }
.btn.primary { background: var(--green); border-color: var(--green); color: var(--bg-deep); }
.btn.primary:hover { box-shadow: 0 12px 34px -6px var(--glow), 0 0 0 4px color-mix(in srgb, var(--green) 18%, transparent); }
.btn.copy code { padding: 0; background: none; color: var(--green); }
.btn.copy::before { content: '$'; color: var(--muted); }
.copied { display: none; color: var(--ok); font-size: 12px; }
.btn.copy.done .copied { display: inline; }

.term, .redact {
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  background: color-mix(in srgb, var(--bg-deep) 92%, transparent); box-shadow: 0 30px 70px -30px rgba(0, 0, 0, .7);
}
.term-bar { display: flex; align-items: center; gap: 7px; padding: 9px 12px; border-bottom: 1px solid var(--line-soft); background: var(--bg-2); }
.term-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.term-bar i:nth-child(1) { background: var(--red); } .term-bar i:nth-child(2) { background: var(--amber); } .term-bar i:nth-child(3) { background: var(--green); }
.term-bar span { margin-left: 8px; color: var(--muted); font-size: 12px; }
.term pre, .redact pre { margin: 0; padding: 14px 16px; min-height: 132px; color: var(--text); font: 13px/1.6 var(--mono); white-space: pre-wrap; word-break: break-word; }
.t-p { color: var(--green); } .t-m { color: var(--muted); } .t-c { color: var(--cyan); } .t-a { color: var(--amber); } .t-r { color: var(--red); } .t-ok { color: var(--ok); }
.cur { display: inline-block; width: .6em; height: 1.1em; vertical-align: -.2em; background: var(--green); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- hero ---------- */
.hero {
  max-width: var(--wrap); margin: 0 auto; padding: 70px 20px 40px; min-height: calc(100vh - 60px);
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 40px; align-items: center;
}
.kicker { margin: 0 0 18px; color: var(--muted); font-size: 13px; }
.pill { display: inline-block; margin-right: 10px; padding: 2px 10px; border: 1px solid var(--green-dim); border-radius: 999px; color: var(--green); }
.hero h1 { margin: 0; color: var(--text-strong); font-size: clamp(38px, 6.4vw, 76px); line-height: 1.02; letter-spacing: -.03em; }
.hero h1 em { display: block; font-style: normal; color: var(--green); text-shadow: 0 0 34px var(--glow); }
.prompt { color: var(--green); margin-right: .2em; }
.caret { display: inline-block; width: .5em; height: .85em; margin-left: .12em; vertical-align: -.05em; background: var(--green); animation: blink 1.1s steps(1) infinite; }
.lead { max-width: 560px; margin: 24px 0 28px; color: var(--text); font-size: 17px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }
.hero .term { max-width: 560px; }
.hero-tail { position: relative; display: grid; place-items: center; min-height: 420px; }
.halo {
  position: absolute; width: 360px; height: 360px; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--green) 22%, transparent) 0%, transparent 65%);
  animation: halo 5s ease-in-out infinite;
}
@keyframes halo { 50% { transform: scale(1.12); opacity: .7; } }
.hint { position: absolute; bottom: 8px; margin: 0; color: var(--muted); font-size: 12px; letter-spacing: .06em; }

/* Big Tails: the same SVG and moods, sized up. */
.tail-buddy.big { position: relative; right: auto; bottom: auto; width: 150px; height: 204px; display: block; }
.tail-buddy.big .tail-mascot { width: 150px; height: 204px; filter: drop-shadow(0 0 22px var(--glow)); }
.tail-buddy.big .tb-say { bottom: 222px; right: -40px; max-width: 280px; font-size: 14px; padding: 7px 14px; }
.tail-buddy.big .tb-fx { right: 40px; bottom: 175px; transform: scale(2); transform-origin: 0 0; }
.tail-buddy.big .tm-dot.d1 { right: 120px; bottom: 192px; width: 9px; height: 9px; }
.tail-buddy.big .tm-dot.d2 { right: 136px; bottom: 212px; width: 13px; height: 13px; }
.tail-buddy.big .tm-dot.d3 { right: 156px; bottom: 234px; width: 17px; height: 17px; }
.tail-buddy.big .tb-bubble-slot { right: 150px; bottom: 250px; }
.tail-buddy.big.playing .tb-bubble-slot { right: -20px; bottom: 30px; }
.tail-buddy.big .tc-bubble { max-width: min(520px, 86vw); }

/* ---------- demo dashboard ---------- */
.dash {
  --c: var(--green);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--bg); box-shadow: 0 40px 120px -40px rgba(0, 0, 0, .85), 0 0 0 1px color-mix(in srgb, var(--green) 14%, transparent);
  font-size: 12px;
}
.d-top { display: flex; align-items: center; gap: 14px; padding: 9px 14px; border-bottom: 1px solid var(--line-soft); background: var(--bg-2); white-space: nowrap; }
.d-brand { color: var(--green); font-weight: 700; }
.d-session { color: var(--text-strong); overflow: hidden; text-overflow: ellipsis; }
.d-metrics { display: flex; gap: 14px; margin-left: auto; color: var(--muted); font-size: 11px; letter-spacing: .06em; }
.d-metrics b { color: var(--cyan); font-size: 13px; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.d-metrics span:last-child b { color: var(--amber); }
.d-metrics i { font-style: normal; color: var(--muted); }
.d-live { color: var(--green); font-size: 11px; letter-spacing: .1em; }
.d-live.idle { color: var(--amber); }
.d-activity {
  display: flex; align-items: center; gap: 10px; padding: 7px 14px; border-bottom: 1px solid var(--line-soft);
  background: color-mix(in srgb, var(--c) 7%, var(--bg)); color: var(--c); font-size: 12px; letter-spacing: .08em;
  transition: background .3s, color .3s; white-space: nowrap; overflow: hidden;
}
.d-activity b { letter-spacing: .14em; }
.d-activity #dActLabel { color: var(--muted); letter-spacing: 0; overflow: hidden; text-overflow: ellipsis; }
.d-clock { margin-left: auto; color: var(--muted); font-variant-numeric: tabular-nums; }
.d-icon { display: inline-block; width: 14px; text-align: center; }
.dash.s-running .d-icon { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.d-body { display: grid; grid-template-columns: 190px minmax(0, 1fr) 270px; height: 430px; }
.d-label { padding: 7px 12px; color: var(--muted); font-size: 10px; letter-spacing: .2em; }
.d-tree { border-right: 1px solid var(--line-soft); background: var(--bg-2); }
.t-dir, .t-file { padding: 2px 12px; color: var(--text); white-space: nowrap; }
.t-file { padding-left: 26px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.t-file.hot { color: var(--text-strong); background: color-mix(in srgb, var(--green) 12%, transparent); }
.t-file.bad { color: var(--red); }
.heat { width: 6px; height: 6px; border-radius: 50%; background: transparent; }
.t-file.hot .heat { background: var(--green); box-shadow: 0 0 8px var(--green); }
.t-file.bad .heat { background: var(--red); box-shadow: 0 0 8px var(--red); }
.d-stage { position: relative; overflow: hidden; }
.d-editor { position: absolute; inset: 0; padding: 10px 0; transition: filter .35s; }
.d-file { margin: 0 0 6px 46px; color: var(--muted); font-size: 11px; }
.d-editor ol { margin: 0; padding: 0 0 0 46px; color: var(--text); font-size: 12.5px; line-height: 1.75; }
.d-editor li { padding-left: 10px; white-space: pre; color: var(--muted); }
.d-editor li::marker { color: color-mix(in srgb, var(--muted) 60%, transparent); font-size: 11px; }
.d-editor li .k { color: var(--purple); } .d-editor li .f { color: var(--cyan); } .d-editor li .s { color: var(--amber); } .d-editor li .cm { color: var(--text-think); font-style: italic; }
.d-editor li.typed { color: var(--text-strong); animation: typed-glow 2.2s ease-out forwards; }
@keyframes typed-glow { from { background: color-mix(in srgb, var(--green) 24%, transparent); } to { background: transparent; } }
.d-editor li.typing::after { content: ''; display: inline-block; width: 7px; height: 14px; margin-left: 1px; vertical-align: -2px; background: var(--green); animation: blink .8s steps(1) infinite; }
.dash.staged .d-editor { filter: brightness(.45) saturate(.6); }
.d-console {
  position: absolute; left: 4%; right: 4%; bottom: 14px; height: 52%; z-index: 3;
  border: 1px solid var(--amber); border-radius: 9px; background: var(--bg-deep); box-shadow: 0 18px 50px rgba(0, 0, 0, .65);
  transform: translateY(115%); opacity: 0; transition: transform .45s cubic-bezier(.2, .8, .2, 1), opacity .3s;
}
.dash.staged .d-console { transform: none; opacity: 1; }
.d-console .d-label { color: var(--amber); }
.d-lines { padding: 0 12px 10px; font-size: 12px; line-height: 1.6; white-space: pre-wrap; overflow: hidden; }
.d-chat { display: flex; flex-direction: column; border-left: 1px solid var(--line-soft); background: var(--bg-chat, var(--bg-2)); min-height: 0; }
.d-msgs { flex: 1; min-height: 0; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; gap: 8px; padding: 0 12px 12px; }
.m { padding: 7px 10px; border-radius: 9px; font-size: 12px; line-height: 1.5; animation: msg-in .35s ease-out; }
@keyframes msg-in { from { opacity: 0; transform: translateY(8px); } }
.m.user { align-self: flex-end; max-width: 92%; border: 1px solid var(--border-user, var(--line)); background: var(--bg-user, var(--bg-3)); color: var(--text-strong); }
.m.think { color: var(--text-think); font-style: italic; border-left: 2px solid var(--line); border-radius: 0; padding: 2px 10px; }
.m.agent { color: var(--text-strong); }
.m.tool { color: var(--cyan); font-size: 11px; border: 1px dashed var(--line); }
.dash .tail-buddy { right: 16px; bottom: 12px; z-index: 5; }
.dash.s-thinking { --c: var(--cyan); } .dash.s-running { --c: var(--amber); } .dash.s-editing { --c: var(--green); }
.dash.s-replying { --c: var(--purple); } .dash.s-done { --c: var(--ok); } .dash.s-error { --c: var(--red); }

/* ---------- cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.card {
  position: relative; padding: 22px 22px 20px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); overflow: hidden; transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--green) 16%, transparent), transparent 70%);
}
.card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--green) 55%, var(--line)); box-shadow: 0 20px 50px -24px var(--glow); }
.card:hover::before { opacity: 1; }
.card h3 { margin: 10px 0 8px; color: var(--text-strong); font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 13.5px; }
.ic { font-size: 24px; }
.cards.three .card code { display: block; margin: 0 0 10px; padding: 6px 8px; color: var(--cyan); font-size: 12px; overflow-wrap: anywhere; }

/* ---------- Tail lab ---------- */
.tail-lab { position: relative; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.lab-stage { position: relative; height: 470px; }
/* Bubbles never leave their box: the demo's bubble sizes to its stage
   (container units) and a playing game stacks above the text when narrow. */
.d-stage { container-type: inline-size; }
.d-stage .tc-bubble { max-width: calc(100cqw - 90px); }
@container (max-width: 560px) {
  .d-stage .think-card.playing .tc-bubble { width: min(340px, calc(100cqw - 24px)); max-width: none; flex-direction: column; align-items: stretch; gap: 8px; }
  .d-stage .think-card.playing .tail-game { width: 100%; }
  .d-stage .tail-buddy.playing .tb-bubble-slot { right: -4px; bottom: 2px; }
}
.d-stage .tail-game, .tail-lab .tail-game { max-width: 100%; height: auto; aspect-ratio: 240 / 110; }
@container (min-width: 561px) {
  .d-stage .think-card.playing .tc-bubble { width: min(640px, calc(100cqw - 40px)); max-width: none; }
  .d-stage .think-card.playing .tail-game { width: 340px; }
}
/* In the lab the stage itself holds Tail's parts: the thought bubble spans
   its top, and a game takes the whole stage, the canvas as wide as it fits. */
.tail-lab .tail-buddy.big { position: static; width: auto; height: auto; }
.tail-lab .tail-buddy.big .tail-mascot { right: 24px; bottom: 0; }
.tail-lab .tail-buddy.big .tb-say { right: 0; bottom: 226px; }
.tail-lab .tail-buddy.big .tb-fx { right: 64px; bottom: 175px; }
.tail-lab .tail-buddy.big .tm-dot.d1 { right: 144px; bottom: 192px; }
.tail-lab .tail-buddy.big .tm-dot.d2 { right: 160px; bottom: 212px; }
.tail-lab .tail-buddy.big .tm-dot.d3 { right: 180px; bottom: 234px; }
.tail-lab .tail-buddy.big .tb-bubble-slot,
.tail-lab .tail-buddy.big.playing .tb-bubble-slot { left: 0; right: 0; top: 0; bottom: auto; }
.tail-lab .tail-buddy.big.playing .tb-bubble-slot { bottom: 0; }
.tail-lab .think-card .tc-bubble { width: 100%; max-width: none; }
.tail-lab .think-card.playing, .tail-lab .think-card.playing .tc-bubble { height: 100%; }
.tail-lab .think-card.playing .tc-bubble { flex-direction: column; align-items: stretch; justify-content: center; gap: 12px; padding: 16px; }
.tail-lab .think-card.playing .tail-game { width: 100%; border-radius: 8px; background: var(--bg-deep); }
.tail-lab .think-card.playing .tc-text { flex: none; }
@media (max-width: 640px) { .lab-stage { height: 400px; } }
.moods { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 16px; }
.moods button {
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg-2); color: var(--text);
  font: 12.5px var(--mono); cursor: pointer; transition: border-color .2s, color .2s, transform .12s;
}
.moods button:hover { border-color: var(--green); color: var(--text-strong); }
.moods button:active { transform: scale(.96); }
.moods button.on { border-color: var(--green); color: var(--green); box-shadow: inset 0 0 0 1px var(--green); }
.moods .wide { grid-column: span 3; }
.moods .wide + .wide { grid-column: span 3; }

/* ---------- arcade ---------- */
.arcade { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 1100px) { .arcade { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); } }
.cab {
  position: relative; padding: 10px 10px 8px; border: 1px solid var(--line); border-radius: 12px; background: var(--card);
  cursor: pointer; transition: transform .2s, border-color .2s, box-shadow .2s; outline: none;
}
.cab:hover, .cab:focus-visible { transform: translateY(-3px); border-color: var(--green); box-shadow: 0 14px 40px -20px var(--glow); }
.cab canvas { display: block; width: 100%; aspect-ratio: 240 / 110; border-radius: 7px; background: var(--bg-deep); }
.cab .cab-name { display: flex; justify-content: space-between; margin-top: 7px; color: var(--text-strong); font-size: 12.5px; }
.cab .cab-cap { color: var(--muted); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cab .cab-tag { color: var(--muted); font-size: 11px; }
.cab.human { border-color: var(--green); box-shadow: 0 0 0 3px color-mix(in srgb, var(--green) 25%, transparent); }
.cab.human .cab-tag { color: var(--green); }

/* ---------- shots ---------- */
.shot { display: block; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 40px 100px -40px rgba(0, 0, 0, .8); }
.shot img { display: block; width: 100%; height: auto; }
.tilt { transition: transform .4s cubic-bezier(.2, .8, .2, 1), box-shadow .4s; transform: perspective(1200px) rotateY(-6deg) rotateX(3deg); }
.tilt:hover { transform: perspective(1200px) rotateY(0) rotateX(0) scale(1.02); box-shadow: 0 50px 120px -40px var(--glow); }

/* ---------- themes ---------- */
.swatches { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 30px; }
.sw {
  display: inline-flex; align-items: center; gap: 10px; padding: 9px 16px 9px 10px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--bg-2); color: var(--text); font: 13px var(--mono); cursor: pointer; transition: transform .15s, border-color .2s;
}
.sw:hover { transform: translateY(-2px); }
.sw[aria-checked="true"] { border-color: var(--green); color: var(--text-strong); box-shadow: 0 0 0 3px color-mix(in srgb, var(--green) 22%, transparent); }
.sw .chip { width: 22px; height: 22px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .15); }

/* ---------- tabs ---------- */
.tabs { max-width: 760px; margin: 0 auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); overflow: hidden; }
.tab-row { display: flex; border-bottom: 1px solid var(--line); }
.tab-row button { flex: 1; padding: 13px; border: 0; background: none; color: var(--muted); font: 600 13px var(--mono); cursor: pointer; }
.tab-row button[aria-selected="true"] { color: var(--green); box-shadow: inset 0 -2px 0 var(--green); background: var(--bg-2); }
.tab-panel { padding: 22px 24px 26px; }
.tab-panel p { margin: 0 0 16px; }
.block-copy { width: 100%; justify-content: flex-start; overflow-x: auto; white-space: nowrap; }

/* ---------- footer ---------- */
.foot { padding: 80px 20px 60px; text-align: center; color: var(--muted); font-size: 13px; }
.foot img { opacity: .9; }
.foot .fine { max-width: 560px; margin: 10px auto 0; font-size: 11.5px; opacity: .8; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .8, .2, 1); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- small screens ---------- */
@media (max-width: 980px) {
  .hero, .split { grid-template-columns: minmax(0, 1fr); }
  .hero { min-height: 0; }
  .hero-tail { min-height: 340px; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .d-body { grid-template-columns: minmax(0, 1fr) 220px; }
  .d-tree { display: none; }
  .d-metrics span:nth-child(3) { display: none; }
  .links { display: none; }
  .gh { margin-left: auto; }
}
@media (max-width: 640px) {
  .cards, .cards.three { grid-template-columns: minmax(0, 1fr); }
  .d-body { grid-template-columns: minmax(0, 1fr); height: 380px; }
  .d-chat { display: none; }
  .d-metrics, .d-session { display: none; }
  .block { padding-top: 80px; }
  .tilt { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .halo, .caret, .cur, .b-dots circle, .dash.s-running .d-icon { animation: none; }
  .tilt, .tilt:hover { transform: none; }
}