/*
 * Slidestory. One idea runs through the page: a thread that connects the slides.
 * Ink is structure, ultramarine is whatever is live, highlighter yellow marks the one thing to look at.
 * Verdict colours are used only for verdicts.
 */
:root {
  --paper: #F2F4FA; --surface: #FFFFFF; --sunk: #E8ECF7; --ink: #0E1530; --ink-2: #2B3558; --muted: #5A6587;
  --line: #DADFEE; --line-2: #C3CBE3;
  --accent: #2742E6; --accent-ink: #FFFFFF; --accent-soft: #E3E8FE;
  --mark: #FFD84A; --mark-ink: #2A2200; --mark-soft: #FFF0B0;
  --ok: #1E9A59; --ok-bg: #DCF3E5; --ok-fg: #0F5132;
  --tune: #D58A0C; --tune-bg: #FCEAC4; --tune-fg: #6A4200;
  --bad: #D8453C; --bad-bg: #FBDCD8; --bad-fg: #7A1C16;
  --add: #7A4FE0; --add-bg: #E8E0FB; --add-fg: #3F1D96;
  --na: #8590AE; --na-bg: #E3E7F2; --na-fg: #434C69;
  --chart-2: #8E9AC2; --chart-3: #C0C8E2;
  --shadow-frame: 0 1px 2px rgba(14, 21, 48, .10), 0 10px 26px -10px rgba(14, 21, 48, .28);
  --shadow-soft: 0 1px 2px rgba(14, 21, 48, .05), 0 24px 48px -28px rgba(14, 21, 48, .30);
  --display: 'Bricolage Grotesque', 'Segoe UI Variable Display', 'Segoe UI', system-ui, sans-serif;
  --sans: 'Instrument Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --gut: clamp(16px, 4vw, 40px);
  --ease: cubic-bezier(.2, .7, .2, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0A0F24; --surface: #121936; --sunk: #0D1330; --ink: #EEF1FC; --ink-2: #C9D1EE; --muted: #98A4CC;
    --line: #252E57; --line-2: #36417A;
    --accent: #8AA0FF; --accent-ink: #0A0F24; --accent-soft: #1B2552;
    --mark: #FFD84A; --mark-ink: #2A2200; --mark-soft: #3B3411;
    --ok: #4ECB8A; --ok-bg: #12372A; --ok-fg: #A9E8C6;
    --tune: #EBAA3A; --tune-bg: #41310F; --tune-fg: #F4D99A;
    --bad: #F0736B; --bad-bg: #4A2220; --bad-fg: #F6BDB8;
    --add: #A58BF2; --add-bg: #2A2150; --add-fg: #CDBDFA;
    --na: #7C89B3; --na-bg: #1C2448; --na-fg: #B8C2E4;
    --chart-2: #5C6AA3; --chart-3: #36417A;
    --shadow-frame: 0 1px 2px rgba(0, 0, 0, .5), 0 12px 30px -10px rgba(0, 0, 0, .75);
    --shadow-soft: 0 1px 2px rgba(0, 0, 0, .4), 0 28px 50px -30px rgba(0, 0, 0, .8);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 16px; }
body {
  margin: 0; position: relative; isolation: isolate; min-height: 100vh;
  background: var(--paper); color: var(--ink); font: 400 16px/1.55 var(--sans);
  padding-bottom: 96px; overflow-x: hidden;
}
body::before {
  content: ""; position: absolute; z-index: -1; inset: 0 0 auto 0; height: 680px; pointer-events: none;
  background-image: radial-gradient(var(--line-2) 1.1px, transparent 1.3px); background-size: 24px 24px;
  -webkit-mask-image: linear-gradient(#000 0%, transparent 82%); mask-image: linear-gradient(#000 0%, transparent 82%);
  opacity: .7;
}
h1, h2, h3, p, ol, ul, figure, fieldset, legend { margin: 0; padding: 0; }
ol, ul { list-style: none; }
button { font: inherit; color: inherit; }
img, svg { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.sr { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 80; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 999px; text-decoration: none; }
.skip:focus { top: 12px; }

/* ---------- top bar ---------- */
.bar { width: min(1120px, 100% - 2 * var(--gut)); margin: 0 auto; padding-block: 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font: 700 21px/1 var(--display); letter-spacing: -.02em; color: var(--ink); text-decoration: none; }
.brand:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; border-radius: 8px; }
.brand svg { width: 30px; height: 30px; }
.brand .wst { background: linear-gradient(transparent 52%, var(--mark) 52%, var(--mark) 92%, transparent 92%) no-repeat 0 0 / 100% 100%; padding: 0 .06em; margin: 0 -.02em; animation: swipe .9s .5s var(--ease) both; }
@keyframes swipe { from { background-size: 0 100%; } }
@media (prefers-color-scheme: dark) { .brand .wst { background: var(--mark) no-repeat 0 0 / 100% 100%; color: var(--mark-ink); border-radius: 5px; padding: 0 .12em; margin: 0; } }
.conn { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13.5px; color: var(--muted); background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 6px 8px 6px 12px; max-width: 100%; }
.conn .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--na); flex: none; transition: background .3s; }
.conn[data-s="ok"] .dot { background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 22%, transparent); }
.conn[data-s="warn"] .dot { background: var(--tune); }
.conn[data-s="bad"] .dot { background: var(--bad); }
.conn .tools { display: inline-flex; gap: 2px; }
.tbtn { background: none; border: 0; border-radius: 999px; padding: 3px 10px; font-size: 13px; font-weight: 600; color: var(--ink); cursor: pointer; }
.tbtn:hover { background: var(--sunk); }
.tbtn:disabled { opacity: .5; cursor: progress; }

.shell { width: min(1120px, 100% - 2 * var(--gut)); margin: 0 auto; display: grid; gap: clamp(20px, 3vw, 32px); }

/* ---------- hero ---------- */
.hero { display: grid; gap: 18px; padding-top: clamp(14px, 4vw, 52px); }
.hero h1 {
  font: 700 clamp(40px, 7.4vw, 92px)/.98 var(--display); font-variation-settings: "wdth" 90; letter-spacing: -.028em;
  max-width: 19ch; text-wrap: balance; transition: font-size .5s var(--ease);
}
.hero-extra { display: grid; grid-template-rows: 1fr; gap: 0; transition: grid-template-rows .55s var(--ease), opacity .4s; }
.hero-extra > div { min-height: 0; overflow: hidden; display: grid; gap: 22px; }
.lede { font-size: clamp(17px, 2vw, 20px); line-height: 1.5; color: var(--ink-2); max-width: 54ch; text-wrap: pretty; }
.art svg { width: 100%; height: auto; overflow: visible; }
body[data-compact] .hero h1 { font-size: clamp(30px, 4.6vw, 54px); }
body[data-compact] .hero-extra { grid-template-rows: 0fr; opacity: 0; }

/* hero art: the thread breaks at one slide, Slidestory finds it, the thread is repaired */
.art .frame { fill: var(--surface); stroke: var(--line-2); stroke-width: 1.5; }
.art .ink { fill: var(--line-2); }
.art .ink-d { fill: var(--chart-2); }
.art .acc { fill: var(--accent); }
.art .thread { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linecap: round; }
.art .lost { fill: none; stroke: var(--bad); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 3 9; }
.art .bead { fill: var(--mark); stroke: var(--ink); stroke-width: 2.5; }
.art .hl { fill: var(--mark); opacity: .9; }
.art .call rect { fill: var(--ink); }
.art .call text { fill: var(--paper); font: 600 14px var(--sans); }
.art .okc { fill: none; stroke: var(--ok); stroke-width: 3.5; stroke-linecap: round; stroke-linejoin: round; }
.art .t-a { stroke-dasharray: 1; animation: draw 1.5s .35s var(--ease) both; }
.art .mini { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.art .t-fix { stroke-dasharray: 1; animation: draw .8s 3.35s var(--ease) both; }
.art .t-b { stroke-dasharray: 1; animation: draw .9s 4.05s var(--ease) both; }
.art .f3 { animation: flag .4s 1.85s var(--ease) both; }
.art .f3-frame { animation: flagframe .4s 1.85s both; }
.art .hl { transform-box: fill-box; transform-origin: left center; animation: gx .5s 2.15s var(--ease) both; }
.art .call { animation: pop .45s 2.45s var(--ease) both; transform-box: fill-box; transform-origin: 20% 100%; }
.art .okc { stroke-dasharray: 1; animation: draw .5s 4.0s var(--ease) both; }
.art .fade { animation: fade .5s both; }
@keyframes lostin { 0%, 50% { opacity: 0; } 55% { opacity: 1; } 95% { opacity: 1; } 100% { opacity: 0; } }
@keyframes flagframe { to { stroke: var(--bad); } }
@keyframes flag { from { opacity: 0; } to { opacity: 1; } }
.art .t-lost { animation: lostin 3.6s .0s linear both; }

/* ---------- buttons ---------- */
.cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px; border: 0; cursor: pointer; text-decoration: none;
  background: var(--ink); color: var(--paper); font: 600 16px/1 var(--sans); padding: 8px 8px 8px 24px; border-radius: 999px;
  min-height: 52px; transition: transform .2s var(--ease), box-shadow .2s;
}
.cta:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 10px 24px -10px color-mix(in srgb, var(--ink) 70%, transparent); }
.cta:active:not(:disabled) { transform: translateY(0); }
.cta:disabled { opacity: .45; cursor: not-allowed; }
.cta .gem { width: 36px; height: 36px; border-radius: 50%; background: var(--mark); color: var(--mark-ink); display: grid; place-items: center; transition: transform .3s var(--ease); }
.cta:hover:not(:disabled) .gem { transform: rotate(18deg) scale(1.08); }
.cta .gem svg { width: 18px; height: 18px; }
.cta.plain { padding: 0 22px; min-height: 46px; font-size: 15px; }
.ghost { display: inline-flex; align-items: center; gap: 8px; font: 600 14px/1 var(--sans); padding: 11px 18px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; color: var(--ink); cursor: pointer; transition: border-color .2s, background .2s; }
.ghost:hover:not(:disabled) { border-color: var(--ink); background: var(--surface); }
.ghost:disabled { opacity: .5; cursor: not-allowed; }
.linkbtn { background: none; border: 0; padding: 2px 0; color: var(--ink); font-weight: 600; font-size: 14px; text-decoration: underline; text-decoration-color: var(--line-2); text-underline-offset: 4px; cursor: pointer; }
.linkbtn:hover { text-decoration-color: var(--ink); }

/* ---------- access gate ---------- */
.gate { display: grid; gap: 12px; padding: 18px clamp(16px, 2.4vw, 24px); background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--mark); border-radius: 18px; }
.gate h2 { font: 600 20px/1.2 var(--display); letter-spacing: -.01em; }
.gate form { display: flex; flex-wrap: wrap; gap: 10px; }
.gate input { flex: 1 1 220px; }
#gate-msg { font-size: 14px; color: var(--muted); }
#gate-msg:empty { display: none; }
#gate-msg.bad { color: var(--bad-fg); }

/* ---------- intake ---------- */
.intake { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(250px, 1fr); gap: clamp(16px, 2.4vw, 28px); padding: clamp(12px, 1.8vw, 20px); background: var(--surface); border: 1px solid var(--line); border-radius: 30px; box-shadow: var(--shadow-soft); }
.stage { position: relative; min-height: 320px; display: grid; border-radius: 22px; background: var(--sunk); overflow: hidden; }
.ph { grid-area: 1 / 1; animation: phase .5s var(--ease) both; }
@keyframes phase { from { opacity: 0; transform: scale(.985); } }

.drop { margin: 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; text-align: center; padding: 24px 18px; border: 2px dashed var(--line-2); border-radius: 16px; cursor: pointer; position: relative; transition: border-color .2s, background .2s; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop:hover, .drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, transparent); }
.drop:focus-within { outline: 2px solid var(--accent); outline-offset: 3px; }
.drop-ico { width: 76px; height: 76px; margin-bottom: 4px; transition: transform .35s var(--ease); }
.drop:hover .drop-ico, .drop.over .drop-ico { transform: translateY(-5px) rotate(-3deg); }
.drop-ico .a { fill: var(--surface); stroke: var(--line-2); stroke-width: 2; }
.drop-ico .b { fill: var(--accent); }
.drop-ico .c { fill: var(--mark); }
.drop-ico .d { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.drop-title { font: 700 clamp(24px, 3vw, 30px)/1.1 var(--display); letter-spacing: -.02em; }
.drop-hint { color: var(--ink-2); font-size: 15px; }
.drop .cta { margin-top: 8px; pointer-events: none; }
.drop-sub { color: var(--muted); font-size: 13.5px; margin-top: 4px; }
.file-err { color: var(--bad-fg); font-size: 14px; font-weight: 500; margin: -2px 14px 12px; }
.file-err:empty { display: none; }
.stage[data-phase="idle"] .file-err { align-self: end; }

.reading, .running, .done { display: flex; flex-direction: column; justify-content: center; gap: 16px; padding: clamp(18px, 3vw, 30px); }
.fchip { display: flex; align-items: center; gap: 12px; min-width: 0; }
.fchip .ico { flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); display: grid; place-items: center; color: var(--accent); }
.fchip .ico svg { width: 20px; height: 20px; }
.fchip .nm { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fchip .sz { color: var(--muted); font-size: 13.5px; }
.ptitle { font: 700 clamp(24px, 3.2vw, 34px)/1.08 var(--display); letter-spacing: -.025em; text-wrap: balance; }
.psub { color: var(--ink-2); font-size: 15.5px; max-width: 46ch; }
.track { height: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.fill { height: 100%; width: calc(var(--p, 0) * 100%); border-radius: 99px; background: var(--accent); transition: width .45s var(--ease); position: relative; overflow: hidden; }
.fill::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .55), transparent); transform: translateX(-100%); animation: sweep 1.4s linear infinite; }
@keyframes sweep { to { transform: translateX(100%); } }
.film { display: flex; gap: 8px; height: 66px; overflow: hidden; padding-block: 2px; }
.film img { height: 100%; width: auto; aspect-ratio: var(--ar, 16/9); border-radius: 4px; border: 1px solid var(--line); background: #fff; flex: none; animation: popin .4s var(--ease) both; }
@keyframes popin { from { opacity: 0; transform: translateY(10px) scale(.85); } }
.film .ghostframe { height: 100%; aspect-ratio: var(--ar, 16/9); border-radius: 4px; border: 1.5px dashed var(--line-2); flex: none; }

.ready { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); align-items: center; gap: clamp(14px, 3vw, 28px); padding: clamp(18px, 3vw, 30px); }
.fan { position: relative; width: 100%; max-width: 330px; aspect-ratio: 16 / 12; margin-inline: auto; }
.fan-card { position: absolute; left: 50%; top: 50%; width: 64%; aspect-ratio: var(--ar, 16/9); border-radius: 6px; overflow: hidden; background: #fff; box-shadow: var(--shadow-frame);
  transform: translate(-50%, -50%) translateX(calc((var(--i) - var(--mid)) * 17%)) rotate(calc((var(--i) - var(--mid)) * 5deg));
  animation: deal .7s var(--ease) both; animation-delay: calc(var(--i) * 95ms); }
.fan-card img { width: 100%; height: 100%; object-fit: cover; }
.fan.portrait .fan-card { width: auto; height: 84%; }
@keyframes deal { from { opacity: 0; transform: translate(-50%, -50%) translateY(70px) scale(.6) rotate(0deg); } }
.ready-copy { display: grid; gap: 14px; justify-items: start; }
.ready-copy .facts { color: var(--ink-2); font-size: 15px; max-width: 44ch; }
.ready-copy .note-pp { color: var(--muted); font-size: 13.5px; max-width: 44ch; }
.ready-acts { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }

.beads { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 6px; padding: 6px 4px; max-width: 520px; }
.beads::before { content: ""; position: absolute; left: 8px; right: 8px; top: 50%; height: 2px; background: var(--line-2); transform: translateY(-50%); }
.beads::after { content: ""; position: absolute; left: 8px; top: 50%; height: 2px; width: calc((100% - 16px) * var(--bp, 0)); background: var(--ink); transform: translateY(-50%); transition: width .6s var(--ease); }
.bead { position: relative; z-index: 1; width: 14px; height: 14px; border-radius: 50%; background: var(--sunk); border: 2px solid var(--line-2); transition: background .3s, border-color .3s, transform .3s var(--ease); flex: none; }
.bead[data-s="run"] { border-color: var(--accent); animation: beadpulse 1.2s ease-in-out infinite; }
.bead[data-s="done"] { background: var(--v, var(--ink)); border-color: var(--v, var(--ink)); transform: scale(1.1); }
.bead[data-s="err"] { border-color: var(--bad); background: var(--bad-bg); }
@keyframes beadpulse { 50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 22%, transparent); } }

.run-acts { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.eta { color: var(--muted); font-size: 14px; }
.done-acts { display: flex; flex-wrap: wrap; gap: 10px; }

.fields { display: grid; gap: 18px; align-content: start; padding: clamp(6px, 1vw, 12px) clamp(4px, .8vw, 8px) 6px; }
.field { display: grid; gap: 7px; min-width: 0; border: 0; }
.field label, .field legend { font-size: 14px; font-weight: 600; color: var(--ink); }
.field input[type=text], .field input[type=password], .gate input, .select select {
  width: 100%; font: 400 16px/1.3 var(--sans); padding: 12px 14px; border: 1px solid var(--line-2); border-radius: 12px; background: var(--paper); color: var(--ink); transition: border-color .2s, box-shadow .2s;
}
.field input::placeholder { color: var(--muted); opacity: .8; }
.field input:focus, .gate input:focus, .select select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 20%, transparent); }
.select { position: relative; }
.select select { appearance: none; -webkit-appearance: none; padding-right: 40px; cursor: pointer; }
.select::after { content: ""; position: absolute; right: 16px; top: 50%; width: 8px; height: 8px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: translateY(-70%) rotate(45deg); pointer-events: none; }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg label { position: relative; font-weight: 500; }
.seg input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.seg span { display: inline-block; padding: 9px 15px; border-radius: 999px; border: 1px solid var(--line-2); font-size: 14px; font-weight: 600; background: var(--paper); transition: background .2s, color .2s, border-color .2s; }
.seg input:checked + span { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.fields.locked { opacity: .55; pointer-events: none; }

.status { min-height: 0; font-size: 15px; color: var(--ink-2); }
.status:empty { display: none; }
.status.bad { color: var(--bad-fg); background: var(--bad-bg); padding: 12px 16px; border-radius: 14px; }

/* ---------- results ---------- */
.example-head { display: grid; gap: 4px; padding-top: 6px; }
.example-head h2 { font: 700 clamp(26px, 3.4vw, 36px)/1.1 var(--display); letter-spacing: -.025em; }
.example-head p { color: var(--muted); }
#out { display: grid; gap: 20px; }

.overview { background: var(--surface); border: 1px solid var(--line); border-radius: 26px; padding: clamp(18px, 3.2vw, 34px); display: grid; gap: 18px; box-shadow: var(--shadow-soft); }
.k { font-size: 14px; font-weight: 600; color: var(--muted); }
.thesis { font: 700 clamp(26px, 3.6vw, 42px)/1.1 var(--display); letter-spacing: -.028em; max-width: 27ch; text-wrap: balance; }
.thesis .w { display: inline-block; animation: word .55s var(--ease) both; animation-delay: calc(var(--w) * 38ms); }
@keyframes word { from { opacity: 0; transform: translateY(.35em); filter: blur(4px); } }
.arc { max-width: 70ch; color: var(--ink-2); font-size: 16.5px; text-wrap: pretty; }
.strip { display: flex; gap: 12px; overflow-x: auto; padding: 6px 4px 12px; margin-inline: -4px; scrollbar-width: thin; }
.st { flex: 0 0 140px; min-width: 0; display: grid; gap: 7px; align-content: start; text-align: left; background: none; border: 0; padding: 0; cursor: pointer; }
.st img { width: 100%; aspect-ratio: var(--ar, 16/9); object-fit: cover; border-radius: 5px; background: #fff; box-shadow: var(--shadow-frame); transition: transform .25s var(--ease); }
.st:hover img { transform: translateY(-3px); }
.st .vbar { height: 4px; border-radius: 2px; background: var(--na); }
.st .lab { font-size: 12.5px; font-weight: 600; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.st.v-strong .vbar { background: var(--ok); } .st.v-tune .vbar { background: var(--tune); }
.st.v-replace .vbar { background: var(--bad); } .st.v-add .vbar { background: var(--add); }
.tally { display: flex; flex-wrap: wrap; gap: 8px; }
.two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; }
.two ul, .two ol { display: grid; gap: 10px; margin-top: 8px; }
.two li { display: grid; gap: 3px; padding-left: 14px; border-left: 3px solid var(--mark); }
.two li .linkbtn { justify-self: start; text-align: left; }
.fit { font-size: 14.5px; color: var(--muted); }

.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.chip { font-size: 14px; font-weight: 600; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--surface); cursor: pointer; transition: background .2s, color .2s; }
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed=true] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.toolbar .push { margin-left: auto; }
#copybox { width: 100%; min-height: 160px; font: 13px/1.5 ui-monospace, 'Cascadia Mono', Menlo, Consolas, monospace; padding: 12px; border: 1px solid var(--line-2); border-radius: 12px; background: var(--surface); color: var(--ink); margin-top: 10px; }

.thread { --gap: 28px; position: relative; display: grid; gap: var(--gap); padding-left: 48px; }
.slide { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: 26px; padding: clamp(16px, 2.6vw, 28px); display: grid; gap: 18px; scroll-margin-top: 16px; box-shadow: var(--shadow-soft); }
.rail { position: absolute; left: -48px; top: 0; width: 48px; bottom: calc(-1 * var(--gap)); pointer-events: none; }
.rail .seg-track, .rail .seg-fill { position: absolute; left: 23px; width: 2px; top: 33px; bottom: calc(-33px); border-radius: 2px; }
.rail .seg-track { background: var(--line-2); }
.rail .seg-fill { background: var(--ink); transform: scaleY(0); transform-origin: top; transition: transform .9s var(--ease); }
.slide[data-status="done"] .seg-fill { transform: scaleY(1); }
.slide:last-child .seg-track, .slide:last-child .seg-fill { display: none; }
.rail .node { position: absolute; left: 14px; top: 24px; width: 20px; height: 20px; border-radius: 50%; background: var(--paper); border: 3px solid var(--line-2); transition: background .35s, border-color .35s, transform .45s var(--ease); }
.slide[data-status="running"] .node { border-color: var(--accent); animation: beadpulse 1.2s ease-in-out infinite; }
.slide[data-status="done"] .node { background: var(--v, var(--ink)); border-color: var(--surface); box-shadow: 0 0 0 3px var(--v, var(--ink)); transform: scale(1.05); }
.slide[data-status="error"] .node { border-color: var(--bad); background: var(--bad-bg); }
.slide[data-verdict="strong"] { --v: var(--ok); } .slide[data-verdict="tune"] { --v: var(--tune); }
.slide[data-verdict="replace"] { --v: var(--bad); } .slide[data-verdict="add"] { --v: var(--add); }
.slide[data-verdict="not_needed"] { --v: var(--na); }

.shead { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.num { font: 700 30px/1 var(--display); letter-spacing: -.03em; }
.role { font-size: 14px; font-weight: 500; color: var(--muted); }
.shead .pill { margin-left: auto; }
.pill { display: inline-block; font: 600 13px/1 var(--sans); padding: 7px 12px; border-radius: 999px; background: var(--na-bg); color: var(--na-fg); }
.pill.v-strong { background: var(--ok-bg); color: var(--ok-fg); } .pill.v-tune { background: var(--tune-bg); color: var(--tune-fg); }
.pill.v-replace { background: var(--bad-bg); color: var(--bad-fg); } .pill.v-add { background: var(--add-bg); color: var(--add-fg); }
.pill.pop { animation: pillpop .5s var(--ease) both; }
@keyframes pillpop { from { transform: scale(.7); opacity: 0; } 60% { transform: scale(1.08); } }

.compare { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(18px, 3vw, 32px); align-items: start; }
.compare.fresh > .col { animation: rise .55s var(--ease) both; }
.compare.fresh > .col + .col { animation-delay: .12s; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
.col { display: grid; gap: 16px; min-width: 0; align-content: start; }
.slidebox { position: relative; border-radius: 6px; overflow: hidden; background: #fff; box-shadow: var(--shadow-frame); }
.slidebox img { width: 100%; height: auto; }
.slidebox.scan::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 0%, color-mix(in srgb, var(--accent) 34%, transparent) 49%, var(--accent) 50%, color-mix(in srgb, var(--accent) 0%, transparent) 52%, transparent 100%); height: 60%; animation: scan 1.9s ease-in-out infinite; opacity: .75; }
@keyframes scan { from { transform: translateY(-100%); } to { transform: translateY(190%); } }
.note { display: grid; gap: 3px; min-width: 0; }
.note p { text-wrap: pretty; max-width: 62ch; }
.atitle { font: 700 clamp(21px, 2.4vw, 26px)/1.18 var(--display); letter-spacing: -.02em; text-wrap: balance; }
mark { background: var(--mark); color: var(--mark-ink); padding: .02em .22em; border-radius: 4px; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.opts { display: grid; gap: 12px; margin-top: 4px; }
.opts li { display: grid; gap: 2px; padding-left: 14px; border-left: 3px solid var(--accent); }
.opts li span { color: var(--ink-2); font-size: 15px; }
.chartfig { display: grid; gap: 8px; padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); }
.ctitle { font: 600 16px/1.3 var(--sans); }
.cmeta { font-size: 13px; color: var(--muted); }
.cnote { font-size: 15px; }
.chartbox { min-width: 0; }
details.data summary { cursor: pointer; font-size: 13.5px; font-weight: 600; color: var(--ink-2); width: fit-content; }
.datatable { border-collapse: collapse; font-size: 13.5px; margin-top: 8px; width: 100%; font-variant-numeric: tabular-nums; }
.datatable th, .datatable td { text-align: right; padding: 5px 8px; border-bottom: 1px solid var(--line); }
.datatable th:first-child, .datatable td:first-child { text-align: left; font-weight: 600; }
.quiet { color: var(--muted); font-size: 15px; }
.err { color: var(--bad-fg); font-size: 15px; }
.skel { height: 14px; border-radius: 7px; background: linear-gradient(90deg, var(--sunk) 20%, var(--line) 45%, var(--sunk) 70%); background-size: 220% 100%; animation: shimmer 1.5s linear infinite; }
.skel:nth-child(2) { width: 82%; } .skel:nth-child(3) { width: 58%; }
@keyframes shimmer { from { background-position: 120% 0; } to { background-position: -100% 0; } }
.thinking { display: flex; align-items: center; gap: 10px; font-size: 14.5px; color: var(--accent); font-weight: 600; min-height: 1.5em; }
.thinking i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: beadpulse 1.2s ease-in-out infinite; }
.thinking span { animation: fade .4s both; }

.chart { width: 100%; height: auto; display: block; overflow: visible; }
.chart text { font: 12px var(--sans); fill: var(--muted); }
.chart .cat { fill: var(--ink); }
.chart .v { fill: var(--ink); font-size: 12px; font-variant-numeric: tabular-nums; }
.chart .strong { font-weight: 700; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .base { stroke: var(--line-2); stroke-width: 1; }
.chart .b-acc, .chart .p-acc { fill: var(--accent); } .chart .b-m2, .chart .p-m2 { fill: var(--chart-2); } .chart .b-m3, .chart .p-m3 { fill: var(--chart-3); }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .l-acc { stroke: var(--accent); } .chart .l-m2 { stroke: var(--chart-2); } .chart .l-m3 { stroke: var(--chart-3); }
.chart .dot { stroke: var(--paper); stroke-width: 2; }
.chart .hit { fill: transparent; }
.chart .hlband { fill: var(--mark-soft); }
.chart [data-tip] { cursor: default; }
.chart .gx, .chart .gxr, .chart .gy, .chart .gyt { transform-box: fill-box; animation: gx .75s var(--ease) both; animation-delay: calc(var(--k, 0) * 45ms); }
.chart .gx { transform-origin: left center; } .chart .gxr { transform-origin: right center; }
.chart .gy, .chart .gyt { animation-name: gy; } .chart .gy { transform-origin: center bottom; } .chart .gyt { transform-origin: center top; }
.chart .draw { stroke-dasharray: 1; animation: draw 1.1s var(--ease) both; }
.chart .pop { animation: fade .3s 1s both; }
.chart .lbl { animation: fade .45s both; animation-delay: calc(.45s + var(--k, 0) * 45ms); }
@keyframes gx { from { transform: scaleX(0); } }
@keyframes gy { from { transform: scaleY(0); } }
@keyframes draw { from { stroke-dashoffset: 1; } }
@keyframes fade { from { opacity: 0; } }
@keyframes pop { from { opacity: 0; transform: scale(.85); } }

/* ---------- dock, top progress, tooltip ---------- */
.topprog { position: fixed; left: 0; top: 0; right: 0; height: 3px; z-index: 70; background: var(--accent); transform: scaleX(var(--p, 0)); transform-origin: left; opacity: 0; transition: transform .5s var(--ease), opacity .3s; }
.topprog.on { opacity: 1; }
.dock { position: fixed; left: 50%; bottom: 16px; z-index: 65; transform: translate(-50%, 0); display: flex; align-items: center; gap: 14px; background: var(--ink); color: var(--paper); border-radius: 999px; padding: 8px 8px 8px 20px; box-shadow: 0 18px 40px -12px rgba(0, 0, 0, .55); max-width: calc(100% - 24px); animation: dockin .5s var(--ease) both; }
@keyframes dockin { from { opacity: 0; transform: translate(-50%, 24px); } }
.dock .dt { font-size: 14.5px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dock .dt small { font-weight: 400; opacity: .75; margin-left: 6px; }
.dock .spin { width: 14px; height: 14px; border-radius: 50%; border: 2.5px solid color-mix(in srgb, var(--paper) 30%, transparent); border-top-color: var(--mark); animation: rot .8s linear infinite; flex: none; }
@keyframes rot { to { transform: rotate(360deg); } }
.dock .dstop { border: 0; background: color-mix(in srgb, var(--paper) 18%, transparent); color: var(--paper); font-weight: 600; font-size: 13.5px; padding: 9px 16px; border-radius: 999px; cursor: pointer; }
.dock .dstop:hover { background: color-mix(in srgb, var(--paper) 30%, transparent); }
.tip { position: fixed; z-index: 90; pointer-events: none; background: var(--ink); color: var(--paper); font: 500 13px/1.3 var(--sans); padding: 6px 10px; border-radius: 8px; max-width: 260px; transform: translate(-50%, calc(-100% - 12px)); box-shadow: 0 8px 20px -8px rgba(0, 0, 0, .5); }

.foot { font-size: 13.5px; color: var(--muted); max-width: 74ch; text-wrap: pretty; padding-top: 8px; }

/* ---------- small screens ---------- */
@media (max-width: 820px) {
  .intake { grid-template-columns: minmax(0, 1fr); border-radius: 24px; }
  .ready { grid-template-columns: minmax(0, 1fr); text-align: left; }
  .compare, .two { grid-template-columns: minmax(0, 1fr); }
  .stage { min-height: 280px; }
}
@media (max-width: 560px) {
  .thread { padding-left: 30px; --gap: 22px; }
  .rail { left: -30px; width: 30px; }
  .rail .seg-track, .rail .seg-fill { left: 14px; }
  .rail .node { left: 5px; width: 18px; height: 18px; top: 24px; }
  .rail .seg-track, .rail .seg-fill { top: 33px; }
  .slide { border-radius: 20px; }
  .num { font-size: 26px; }
  .conn { font-size: 13px; }
  .dock { padding-left: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-delay: 0s !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}