/* Hallmark · macrostructure: Narrative Workflow · theme: cinematic workbench */
/* Hallmark · pre-emit critique: P5 H4 E4 S5 R4 V5 */

:root {
  --color-bg: #07090b;
  --color-bg-soft: #0d1115;
  --color-panel: #11161b;
  --color-panel-raised: #171d22;
  --color-ivory: #f0eee7;
  --color-muted: #9ca6aa;
  --color-dim: #697277;
  --color-line: #293238;
  --color-line-strong: #465158;
  --color-cyan: #55dff6;
  --color-cyan-soft: rgba(85, 223, 246, 0.13);
  --color-cyan-glow: rgba(85, 223, 246, 0.32);
  --color-violet: #b8a7ff;
  --color-violet-soft: rgba(184, 167, 255, 0.14);
  --color-amber: #f3bd67;
  --color-amber-soft: rgba(243, 189, 103, 0.14);
  --color-mint: #8de7be;
  --color-mint-soft: rgba(141, 231, 190, 0.14);
  --color-error: #ff8e88;
  --color-black: #000;
  --color-shadow: rgba(0, 0, 0, 0.45);
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --content: min(1200px, calc(100vw - 64px));
  --reading: 760px;
  --radius-xs: 6px;
  --radius-sm: 12px;
  --radius-md: 20px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --topbar-height: 64px;
}

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  overflow-x: clip;
  color: var(--color-ivory);
  background: var(--color-bg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

button, input, select { font: inherit; }
button, a { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 4px;
}

::selection { color: var(--color-bg); background: var(--color-cyan); }

.skip-link {
  position: fixed;
  z-index: 999;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  color: var(--color-bg);
  background: var(--color-cyan);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.topbar {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--topbar-height);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  border-bottom: 1px solid var(--color-line);
  background: rgba(7, 9, 11, 0.9);
  backdrop-filter: blur(16px);
}

.wordmark,
.chapter-nav,
.icon-button { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; }
.wordmark { min-height: 44px; display: inline-flex; align-items: center; gap: 10px; justify-self: start; }
.wordmark-mark { width: 9px; height: 9px; background: var(--color-cyan); box-shadow: 0 0 18px var(--color-cyan-glow); }
.chapter-nav { display: flex; align-items: center; gap: 28px; color: var(--color-muted); }
.chapter-nav a { min-height: 44px; display: inline-flex; align-items: center; transition: color 160ms ease-out; }
.chapter-nav a:hover { color: var(--color-ivory); }
.icon-button,
.secondary-button {
  min-height: 44px;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-xs);
  background: transparent;
  cursor: pointer;
  transition: border-color 160ms ease-out, color 160ms ease-out, background 160ms ease-out;
}
.icon-button { justify-self: end; display: inline-flex; align-items: center; gap: 8px; padding: 0 13px; }
.icon-button:hover,
.secondary-button:hover { border-color: var(--color-cyan); background: var(--color-cyan-soft); }

main { min-width: 0; }
section[id], article[id] { scroll-margin-top: var(--topbar-height); }

.hero {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  display: grid;
  align-content: end;
  padding: calc(var(--topbar-height) + 80px) max(32px, calc((100vw - 1200px) / 2)) 42px;
  background: var(--color-bg);
  overflow: hidden;
}
.hero-backdrop { position: absolute; z-index: -1; inset: 0; }
.hero-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 9, 11, .88) 0%, rgba(7, 9, 11, .72) 38%, rgba(7, 9, 11, .28) 63%, rgba(7, 9, 11, .18) 100%),
    linear-gradient(180deg, rgba(7, 9, 11, .38) 0%, rgba(7, 9, 11, .04) 38%, rgba(7, 9, 11, .86) 100%),
    linear-gradient(90deg, transparent 49.92%, var(--color-line) 50%, transparent 50.08%);
}
.hero-backdrop picture,
.hero-backdrop img { display: block; width: 100%; height: 100%; }
.hero-backdrop img { object-fit: cover; object-position: center center; }
.hero-grid,
.hero-meta { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(340px, .8fr); gap: 80px; align-items: end; }
.kicker { margin: 0 0 18px; color: var(--color-cyan); font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.hero h1,
.stage h2,
.finish h2 { min-width: 0; overflow-wrap: anywhere; text-wrap: balance; }
.hero h1 { margin: 0; max-width: 850px; font-size: clamp(46px, 7vw, 104px); line-height: .98; font-weight: 650; letter-spacing: -.045em; }
.nowrap { white-space: nowrap; }
.hero-lede { max-width: 34ic; margin: 30px 0 34px; color: var(--color-muted); font-size: clamp(17px, 1.4vw, 21px); line-height: 1.75; }
.primary-link { display: inline-flex; min-height: 48px; align-items: center; gap: 28px; padding: 0 2px 4px; border-bottom: 1px solid var(--color-cyan); color: var(--color-ivory); font-weight: 600; }
.primary-link span { color: var(--color-cyan); }

.pipeline { position: relative; display: grid; gap: 24px; padding: 8px 0 10px 34px; }
.pipeline-track { position: absolute; top: 20px; bottom: 20px; left: 8px; width: 1px; background: var(--color-line); }
.pipeline-track::after { content: ""; position: absolute; inset: 0; background: var(--color-cyan); transform-origin: top; animation: pipeline-draw 2.4s var(--ease) .4s both; }
.pipeline-node { position: relative; display: grid; grid-template-columns: 42px 1fr; grid-template-rows: auto auto; column-gap: 14px; opacity: .42; transition: opacity 300ms ease-out, transform 300ms var(--ease); }
.pipeline-node::before { content: ""; position: absolute; left: -30px; top: 11px; width: 9px; height: 9px; border: 1px solid var(--color-line-strong); background: var(--color-bg); transform: rotate(45deg); }
.pipeline-node.is-active { opacity: 1; transform: translateX(4px); }
.pipeline-node.is-active::before { border-color: var(--color-cyan); background: var(--color-cyan); box-shadow: 0 0 18px var(--color-cyan-glow); }
.pipeline-node span { grid-row: 1 / 3; color: var(--color-dim); font-family: var(--font-mono); font-size: 12px; }
.pipeline-node strong { font-size: 18px; line-height: 1.4; }
.pipeline-node small { color: var(--color-muted); }

.hero-meta { margin-top: 88px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--color-line); }
.hero-meta div { padding: 22px 24px 0 0; display: flex; justify-content: space-between; gap: 20px; }
.hero-meta div + div { padding-left: 24px; border-left: 1px solid var(--color-line); }
.hero-meta span { color: var(--color-dim); font-family: var(--font-mono); font-size: 12px; }
.hero-meta strong { font-size: 14px; font-weight: 500; }

.stage { position: relative; width: var(--content); margin-inline: auto; padding-block: 150px 40px; }
.stage::before { content: ""; position: absolute; top: 105px; left: 0; right: 0; height: 1px; background: var(--color-line); }
.stage-index { position: absolute; top: 74px; left: 0; display: flex; align-items: baseline; gap: 14px; padding-right: 16px; background: var(--color-bg); font-family: var(--font-mono); }
.stage-index span { color: var(--color-cyan); font-size: 14px; }
.stage-index small { color: var(--color-dim); }
.stage-head { max-width: 920px; margin-bottom: 64px; }
.stage h2 { margin: 0; font-size: clamp(34px, 4.5vw, 68px); line-height: 1.08; letter-spacing: -.035em; font-weight: 600; }
.split-head { max-width: none; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(270px, .75fr); align-items: end; gap: 64px; }
.split-head > p { max-width: 29ic; margin: 0 0 8px; color: var(--color-muted); }

.misconception-list { border-top: 1px solid var(--color-line-strong); }
.compare-row { display: grid; grid-template-columns: minmax(220px, .7fr) 60px minmax(0, 1.3fr); gap: 24px; align-items: start; padding: 30px 0; border-bottom: 1px solid var(--color-line); }
.compare-row p { margin: 0; }
.compare-row .wrong { color: var(--color-dim); text-decoration: line-through; text-decoration-color: var(--color-error); text-decoration-thickness: 1px; }
.compare-arrow { color: var(--color-cyan); font-family: var(--font-mono); }
.compare-row strong { display: block; margin-bottom: 7px; font-size: 20px; }
.compare-row div p { color: var(--color-muted); max-width: 45ic; }

.mode-workbench { display: grid; grid-template-columns: 210px minmax(0, 1fr); min-height: 520px; border: 1px solid var(--color-line); background: var(--color-bg-soft); }
.mode-tabs { display: flex; flex-direction: column; border-right: 1px solid var(--color-line); }
.mode-tabs button { min-height: 96px; padding: 20px 24px; border: 0; border-bottom: 1px solid var(--color-line); color: var(--color-dim); background: transparent; text-align: left; cursor: pointer; font-family: var(--font-mono); font-size: 17px; transition: color 180ms ease-out, background 180ms ease-out; }
.mode-tabs button span { display: block; margin-top: 5px; font-family: var(--font-body); font-size: 13px; }
.mode-tabs button[aria-selected="true"] { color: var(--color-cyan); background: var(--color-cyan-soft); box-shadow: inset 3px 0 var(--color-cyan); }
.mode-panel { display: grid; grid-template-columns: minmax(240px, .7fr) minmax(0, 1.3fr); gap: 40px; padding: 54px; }
.mode-visual { position: relative; min-height: 360px; display: grid; place-items: center; overflow: hidden; border-right: 1px solid var(--color-line); }
.mode-visual b { display: grid; place-items: center; width: 110px; aspect-ratio: 1; border: 1px solid var(--color-cyan); border-radius: 50%; color: var(--color-cyan); font-family: var(--font-mono); font-size: 42px; box-shadow: inset 0 0 40px var(--color-cyan-soft); }
.mode-visual span { position: absolute; width: 210px; aspect-ratio: 1; border: 1px dashed var(--color-line-strong); border-radius: 50%; }
.mode-visual span:nth-child(2) { width: 300px; }
.mode-content { align-self: center; }
.mode-signal { margin: 0 0 8px; color: var(--color-cyan); font-family: var(--font-mono); font-size: 12px; }
.mode-content h3 { margin: 0 0 14px; font-size: clamp(26px, 3vw, 42px); line-height: 1.2; }
.mode-content > p:not(.mode-signal) { color: var(--color-muted); }
.mode-facts { margin: 30px 0 0; border-top: 1px solid var(--color-line); }
.mode-facts div { display: grid; grid-template-columns: 100px 1fr; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--color-line); }
.mode-facts dt { color: var(--color-dim); font-family: var(--font-mono); font-size: 12px; }
.mode-facts dd { margin: 0; font-size: 14px; }

.cases-intro { padding-bottom: 0; }
.case-chapter { position: relative; margin-top: 120px; padding-block: 0 120px; border-top: 1px solid var(--color-line); }
.case-hero { position: relative; min-height: min(78vw, 820px); display: grid; align-items: end; background: var(--color-black); overflow: hidden; }
.case-hero-media { position: absolute; inset: 0; overflow: hidden; }
  .case-hero-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, var(--color-shadow)); }
.case-hero-media picture { display: block; width: 100%; height: 100%; }
.case-hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: .84; }
.case-hero-content { position: relative; z-index: 1; width: var(--content); margin-inline: auto; padding-bottom: 48px; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end; }
.case-number { color: var(--color-cyan); font-family: var(--font-mono); }
.case-hero h3 { max-width: 960px; margin: 14px 0 0; font-size: clamp(42px, 7vw, 100px); line-height: 1; letter-spacing: -.04em; }
.case-badge { align-self: end; padding: 12px 16px; border: 1px solid var(--color-cyan); color: var(--color-cyan); font-family: var(--font-mono); }
.case-body { width: var(--content); margin-inline: auto; padding-top: 80px; }
.case-brief { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 72px; padding-bottom: 80px; }
.case-brief h4 { margin: 0 0 16px; color: var(--color-dim); font-family: var(--font-mono); font-size: 12px; font-weight: 500; }
.case-brief blockquote { margin: 0; font-size: clamp(24px, 3vw, 44px); line-height: 1.35; }
.case-brief p { margin: 0; color: var(--color-muted); }
.case-stats { margin-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--color-line); }
.case-stats div { padding-top: 14px; }
.case-stats span { display: block; color: var(--color-dim); font-family: var(--font-mono); font-size: 11px; }
.case-stats strong { font-size: 18px; }

.asset-gallery { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 12px; }
.asset-card { grid-column: span 6; position: relative; border: 1px solid var(--color-line); background: var(--color-bg-soft); overflow: hidden; }
.asset-card:nth-child(n+3) { grid-column: span 4; }
.asset-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 420ms var(--ease); }
.asset-card:hover img { transform: scale(1.012); }
.asset-caption { padding: 18px; }
.asset-caption strong { display: block; font-size: 16px; }
.asset-caption p { margin: 5px 0 0; color: var(--color-muted); font-size: 13px; }
.asset-label { position: absolute; top: 12px; left: 12px; padding: 5px 8px; color: var(--color-bg); background: var(--color-violet); font-family: var(--font-mono); font-size: 10px; }
.asset-label.is-planning { background: var(--color-amber); }

.case-timeline { margin-top: 90px; }
.section-label { margin: 0 0 24px; color: var(--color-cyan); font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; }
.timeline-track { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--color-cyan); }
.timeline-beat { padding: 22px 24px 0 0; }
.timeline-beat + .timeline-beat { padding-left: 24px; border-left: 1px solid var(--color-line); }
.timeline-beat time { color: var(--color-cyan); font-family: var(--font-mono); font-size: 12px; }
.timeline-beat strong { display: block; margin: 8px 0; font-size: 19px; }
.timeline-beat p { margin: 7px 0; color: var(--color-muted); font-size: 14px; }
.timeline-beat p b { color: var(--color-ivory); font-weight: 500; }

.case-production { margin-top: 90px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px; }
.case-production h4 { margin: 0 0 18px; font-size: 22px; }
.case-production ol,
.case-production ul { margin: 0; padding-left: 20px; color: var(--color-muted); }
.case-production li + li { margin-top: 10px; }
.failure-list { display: grid; gap: 12px; }
.failure-item { padding: 15px 0; border-top: 1px solid var(--color-line); }
.failure-item strong { display: block; color: var(--color-amber); }
.failure-item p { margin: 5px 0 0; color: var(--color-muted); }
.case-copy-row { margin-top: 62px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 24px; border-top: 1px solid var(--color-line-strong); }
.case-copy-row p { margin: 0; color: var(--color-muted); }
.secondary-button { padding: 9px 14px; white-space: nowrap; }

.workflow-list { display: grid; }
.workflow-step { display: grid; grid-template-columns: 88px minmax(0, .85fr) minmax(280px, 1.15fr); gap: 36px; padding: 44px 0; border-top: 1px solid var(--color-line); }
.workflow-step:last-child { border-bottom: 1px solid var(--color-line); }
.workflow-number { color: var(--color-cyan); font-family: var(--font-mono); font-size: 24px; }
.workflow-main h3 { margin: 0 0 10px; font-size: 28px; }
.workflow-main > p { margin: 0 0 22px; color: var(--color-muted); }
.workflow-main figure { margin: 0; }
.workflow-main img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.workflow-main figcaption { margin-top: 8px; color: var(--color-dim); font-size: 12px; }
.workflow-details { display: grid; align-content: start; gap: 14px; }
.workflow-fact { display: grid; grid-template-columns: 78px 1fr; gap: 16px; padding-bottom: 13px; border-bottom: 1px solid var(--color-line); }
.workflow-fact b { color: var(--color-dim); font-family: var(--font-mono); font-size: 11px; font-weight: 500; }
.workflow-fact span,
.workflow-fact code { color: var(--color-muted); }
.workflow-fact code { font-family: var(--font-mono); font-size: 12px; overflow-wrap: anywhere; }
.workflow-check { display: flex; gap: 10px; align-items: flex-start; color: var(--color-mint); }

.inspector { width: min(1440px, calc(100vw - 32px)); }
.inspector-toolbar { display: flex; align-items: end; gap: 16px; margin-bottom: 20px; }
.inspector-toolbar label,
.cost-calculator > label,
.field-row label { display: grid; gap: 7px; color: var(--color-muted); font-family: var(--font-mono); font-size: 11px; }
select,
input[type="number"],
input[type="text"] { min-height: 44px; border: 1px solid var(--color-line-strong); border-radius: var(--radius-xs); padding: 0 12px; color: var(--color-ivory); background: var(--color-bg-soft); }
.segmented { display: inline-flex; border: 1px solid var(--color-line-strong); border-radius: var(--radius-xs); overflow: hidden; }
.segmented button { min-height: 44px; padding: 0 13px; border: 0; background: transparent; cursor: pointer; }
.segmented button + button { border-left: 1px solid var(--color-line-strong); }
.segmented button.is-active { color: var(--color-bg); background: var(--color-cyan); }
.inspector-toolbar .secondary-button { margin-left: auto; }
.inspector-grid { display: grid; grid-template-columns: 340px minmax(0, 1fr); min-height: 680px; border: 1px solid var(--color-line); background: var(--color-bg-soft); }
.inspector-refs { padding: 16px; border-right: 1px solid var(--color-line); overflow-y: auto; }
.inspector-ref { width: 100%; margin-bottom: 12px; padding: 0; border: 1px solid var(--color-line); border-radius: var(--radius-xs); color: inherit; background: var(--color-bg); text-align: left; overflow: hidden; cursor: pointer; transition: border-color 160ms ease-out; }
.inspector-ref:hover,
.inspector-ref.is-active { border-color: var(--color-violet); }
.inspector-ref img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.inspector-ref span { display: block; padding: 10px 12px; }
.inspector-ref small { display: block; color: var(--color-dim); }
.inspector-ref.is-planning:hover,
.inspector-ref.is-planning.is-active { border-color: var(--color-amber); }
.prompt-console { min-width: 0; padding: 28px; }
.prompt-timeline { padding-bottom: 24px; border-bottom: 1px solid var(--color-line); }
.prompt-timeline label { display: flex; justify-content: space-between; color: var(--color-muted); font-family: var(--font-mono); font-size: 12px; }
input[type="range"] { width: 100%; accent-color: var(--color-cyan); min-height: 44px; }
.prompt-timeline p { min-height: 27px; margin: 7px 0 0; color: var(--color-cyan); }
.prompt-section { position: relative; margin-top: 22px; padding: 22px 56px 22px 22px; border-left: 3px solid var(--color-line-strong); background: var(--color-panel); transition: border-color 180ms ease-out, background 180ms ease-out; }
.prompt-section.is-active { border-left-color: var(--color-cyan); background: var(--color-cyan-soft); }
.prompt-section h3 { margin: 0 0 10px; color: var(--color-cyan); font-family: var(--font-mono); font-size: 12px; font-weight: 500; overflow-wrap: anywhere; }
.prompt-section p { margin: 0; white-space: pre-wrap; color: var(--color-muted); font-family: var(--font-mono); font-size: 13px; line-height: 1.8; overflow-wrap: anywhere; }
.copy-section { position: absolute; top: 12px; right: 12px; min-width: 44px; min-height: 44px; border: 1px solid var(--color-line-strong); border-radius: var(--radius-xs); color: var(--color-muted); background: var(--color-bg-soft); cursor: pointer; }
.prompt-segment-list { display: grid; gap: 8px; margin-top: 18px; }
.prompt-segment { padding: 11px 12px; border: 1px solid var(--color-line); color: var(--color-dim); font-family: var(--font-mono); font-size: 12px; transition: color 160ms ease-out, border-color 160ms ease-out, background 160ms ease-out; }
.prompt-segment.is-active { color: var(--color-ivory); border-color: var(--color-cyan); background: var(--color-cyan-soft); }
.negative-details { margin-top: 22px; border-top: 1px solid var(--color-line); }
.negative-details summary { min-height: 48px; display: flex; align-items: center; color: var(--color-amber); cursor: pointer; }
.negative-details ul { color: var(--color-muted); font-family: var(--font-mono); font-size: 12px; }

.official-flow { display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--color-line-strong); border-bottom: 1px solid var(--color-line-strong); }
.official-step { min-height: 108px; padding: 18px 12px; border: 0; border-right: 1px solid var(--color-line); color: var(--color-dim); background: transparent; text-align: left; cursor: pointer; }
.official-step:last-child { border-right: 0; }
.official-step span { display: block; color: var(--color-dim); font-family: var(--font-mono); font-size: 11px; }
.official-step strong { display: block; margin-top: 8px; font-size: 16px; }
.official-step.is-active { color: var(--color-ivory); background: var(--color-cyan-soft); box-shadow: inset 0 3px var(--color-cyan); }
.official-detail { min-height: 310px; display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 80px; padding: 46px 0; }
.official-detail h3 { margin: 0; font-size: clamp(28px, 3.5vw, 48px); line-height: 1.2; }
.official-detail p { margin: 0; color: var(--color-muted); }
.official-detail code { display: block; margin-top: 18px; padding: 18px; border-left: 3px solid var(--color-cyan); background: var(--color-panel); color: var(--color-ivory); font-family: var(--font-mono); font-size: 13px; overflow-wrap: anywhere; }
.official-detail ul { margin: 18px 0 0; padding-left: 18px; color: var(--color-muted); }

.lab-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; }
.cost-calculator { display: grid; gap: 22px; padding: 30px; border: 1px solid var(--color-line); background: var(--color-bg-soft); }
.cost-calculator fieldset { margin: 0; padding: 0; border: 0; }
.cost-calculator legend { margin-bottom: 8px; color: var(--color-muted); font-family: var(--font-mono); font-size: 11px; }
.cost-calculator fieldset label { min-height: 44px; display: flex; align-items: center; gap: 10px; margin-top: 4px; color: var(--color-muted); }
.cost-calculator input[type="radio"] { accent-color: var(--color-cyan); }
.cost-total { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 6px 20px; padding: 22px 0; border-block: 1px solid var(--color-line-strong); }
.cost-total span { grid-column: 1 / -1; color: var(--color-dim); font-family: var(--font-mono); font-size: 11px; }
.cost-total strong { font-size: 48px; line-height: 1; font-variant-numeric: tabular-nums; }
.cost-total b { color: var(--color-cyan); font-size: 20px; font-weight: 500; font-variant-numeric: tabular-nums; }
.cost-note { margin: 0; color: var(--color-dim); font-size: 12px; }
.review-checklist { padding-top: 8px; }
.review-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--color-line-strong); }
.review-head output { color: var(--color-cyan); font-family: var(--font-mono); }
.qa-item { min-height: 54px; display: grid; grid-template-columns: 26px 1fr; align-items: center; gap: 13px; padding: 10px 0; border-bottom: 1px solid var(--color-line); color: var(--color-muted); cursor: pointer; }

picture { display: block; }
.qa-item input { width: 20px; height: 20px; accent-color: var(--color-cyan); }
.qa-item:has(input:checked) { color: var(--color-ivory); }
.review-checklist .secondary-button { margin-top: 20px; }

.finish { width: var(--content); min-height: 80svh; margin-inline: auto; display: grid; align-content: center; padding-block: 100px; border-top: 1px solid var(--color-line); }
.finish h2 { max-width: 1000px; margin: 0; font-size: clamp(38px, 6vw, 82px); line-height: 1.08; letter-spacing: -.04em; }
.finish-actions { display: flex; gap: 36px; align-items: center; margin-top: 52px; }
.official-link { min-height: 44px; display: inline-flex; align-items: center; color: var(--color-muted); text-decoration: underline; text-underline-offset: 5px; }
.source-note { max-width: 60ic; margin: 48px 0 0; color: var(--color-dim); font-size: 12px; }

.toast { position: fixed; z-index: 200; right: 24px; bottom: 24px; max-width: min(360px, calc(100vw - 48px)); padding: 12px 16px; border: 1px solid var(--color-cyan); border-radius: var(--radius-xs); color: var(--color-bg); background: var(--color-cyan); box-shadow: 0 18px 50px var(--color-shadow); opacity: 0; transform: translateY(10px); pointer-events: none; transition: opacity 180ms ease-out, transform 180ms var(--ease); }
.toast.is-visible { opacity: 1; transform: translateY(0); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 480ms var(--ease), transform 480ms var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@keyframes pipeline-draw { from { transform: scaleY(0); } to { transform: scaleY(1); } }

@media (max-width: 980px) {
  :root { --content: min(100% - 40px, 880px); }
  .chapter-nav { display: none; }
  .topbar { grid-template-columns: 1fr auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 70px; }
  .pipeline { max-width: 520px; }
  .split-head { grid-template-columns: 1fr; gap: 22px; }
  .mode-workbench { grid-template-columns: 1fr; }
  .mode-tabs { flex-direction: row; border-right: 0; border-bottom: 1px solid var(--color-line); }
  .mode-tabs button { flex: 1; min-height: 76px; border-bottom: 0; border-right: 1px solid var(--color-line); }
  .mode-tabs button[aria-selected="true"] { box-shadow: inset 0 3px var(--color-cyan); }
  .mode-panel { grid-template-columns: 220px 1fr; padding: 36px; }
  .mode-visual { min-height: 300px; }
  .case-brief { grid-template-columns: 1fr; gap: 34px; }
  .workflow-step { grid-template-columns: 56px 1fr; }
  .workflow-details { grid-column: 2; }
  .inspector-grid { grid-template-columns: 260px minmax(0, 1fr); }
  .official-flow { grid-template-columns: repeat(3, 1fr); }
  .official-step:nth-child(3) { border-right: 0; }
  .official-step:nth-child(-n+3) { border-bottom: 1px solid var(--color-line); }
  .official-detail { gap: 38px; }
}

@media (max-width: 700px) {
  :root { --content: calc(100% - 32px); --topbar-height: 58px; }
  body { font-size: 16px; line-height: 1.72; }
  .topbar { padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
  .desktop-only { display: none; }
  .icon-button { min-width: 44px; justify-content: center; }
  .wordmark { font-size: 10px; }
  .hero { min-height: 100svh; padding: calc(var(--topbar-height) + 60px) 16px 24px; }
  .hero-backdrop img { object-position: 68% center; opacity: .62; }
  .hero-backdrop::after {
    background:
      linear-gradient(90deg, rgba(7, 9, 11, .84), rgba(7, 9, 11, .52)),
      linear-gradient(180deg, rgba(7, 9, 11, .55) 0%, rgba(7, 9, 11, .38) 42%, rgba(7, 9, 11, .94) 100%);
  }
  .hero h1 { font-size: clamp(43px, 15vw, 68px); letter-spacing: -.04em; }
  .hero-lede { font-size: 17px; }
  .hero-meta { grid-template-columns: 1fr; margin-top: 60px; }
  .hero-meta div { padding: 12px 0; }
  .hero-meta div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--color-line); }
  .stage { padding-block: 118px 20px; }
  .stage::before { top: 82px; }
  .stage-index { top: 52px; }
  .stage-head { margin-bottom: 42px; }
  .stage h2 { font-size: clamp(34px, 10vw, 48px); }
  .compare-row { grid-template-columns: 1fr 34px; gap: 10px; }
  .compare-row > div:last-child { grid-column: 1 / -1; padding-top: 8px; }
  .compare-arrow { grid-column: 2; grid-row: 1; }
  .mode-tabs { overflow-x: auto; }
  .mode-tabs button { min-width: 110px; padding: 14px; }
  .mode-panel { grid-template-columns: 1fr; padding: 24px 18px 30px; }
  .mode-visual { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--color-line); }
  .mode-visual span { width: 150px; }
  .mode-visual span:nth-child(2) { width: 205px; }
  .mode-visual b { width: 82px; font-size: 30px; }
  .mode-facts div { grid-template-columns: 82px 1fr; }
  .case-chapter { margin-top: 84px; padding-bottom: 80px; }
  .case-hero { min-height: 82svh; }
  .case-hero-content { grid-template-columns: 1fr; padding-bottom: 28px; }
  .case-hero h3 { font-size: clamp(44px, 14vw, 72px); }
  .case-badge { justify-self: start; }
  .case-body { padding-top: 52px; }
  .case-brief blockquote { font-size: 24px; }
  .case-stats { grid-template-columns: 1fr; }
  .case-stats div { padding: 12px 0; border-bottom: 1px solid var(--color-line); }
  .asset-gallery { display: grid; grid-template-columns: minmax(0, 1fr); }
  .asset-card,
  .asset-card:nth-child(n+3) { grid-column: 1; }
  .timeline-track { grid-template-columns: 1fr; border-top: 0; border-left: 2px solid var(--color-cyan); }
  .timeline-beat { padding: 0 0 30px 22px; }
  .timeline-beat + .timeline-beat { padding-left: 22px; border-left: 0; }
  .case-production { grid-template-columns: 1fr; gap: 42px; }
  .case-copy-row { align-items: flex-start; flex-direction: column; }
  .workflow-step { grid-template-columns: 44px minmax(0, 1fr); gap: 14px; padding: 34px 0; }
  .workflow-main h3 { font-size: 24px; }
  .workflow-details { grid-column: 1 / -1; padding-left: 58px; }
  .workflow-fact { grid-template-columns: 68px minmax(0, 1fr); gap: 10px; }
  .inspector { width: calc(100% - 16px); }
  .inspector-toolbar { align-items: stretch; flex-direction: column; }
  .inspector-toolbar .secondary-button { margin-left: 0; }
  .inspector-grid { grid-template-columns: 1fr; }
  .inspector-refs { display: flex; gap: 10px; padding: 10px; border-right: 0; border-bottom: 1px solid var(--color-line); overflow-x: auto; }
  .inspector-ref { flex: 0 0 210px; margin: 0; }
  .prompt-console { padding: 18px 12px; }
  .prompt-section { padding: 18px 45px 18px 14px; }
  .prompt-section p { font-size: 12px; }
  .official-flow { grid-template-columns: repeat(2, 1fr); }
  .official-step:nth-child(3) { border-right: 1px solid var(--color-line); }
  .official-step:nth-child(2n) { border-right: 0; }
  .official-step:nth-child(-n+4) { border-bottom: 1px solid var(--color-line); }
  .official-detail { grid-template-columns: 1fr; gap: 20px; }
  .lab-grid { grid-template-columns: 1fr; gap: 52px; }
  .cost-calculator { padding: 20px 16px; }
  .cost-total strong { font-size: 42px; }
  .finish { min-height: 70svh; }
  .finish-actions { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .pipeline-track::after { transform: scaleY(1); }
  .asset-card:hover img { transform: none; }
}