:root {
  --paper: #f8f6ef;
  --paper-deep: #eeebe1;
  --paper-card: #fdfcf8;
  --ink: #171714;
  --ink-soft: #62615b;
  --line: #d2cfc4;
  --line-strong: #8d8b83;
  --blue: #6b98c7;
  --blue-light: #c6d9ea;
  --green: #788b5f;
  --green-light: #c8d2b9;
  --rose: #bf6e87;
  --rose-light: #e2bec9;
  --violet: #8c83cf;
  --amber: #eda954;
  --human: #d7d3c7;
  --page: min(100% - 40px, 1380px);
  --reading: 760px;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  --sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", monospace;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(23, 23, 20, .028) 1px, transparent 1px) 0 0 / 100% 32px,
    var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

button, input { font: inherit; }
button { color: inherit; }
h1, h2, h3, p, figure, blockquote { margin: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; text-wrap: balance; }
a { color: inherit; }
::selection { color: var(--ink); background: #e8d6a8; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 50;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid #2c84db; outline-offset: 3px; }

.reading-progress {
  position: fixed;
  z-index: 40;
  inset: 0 0 auto;
  height: 3px;
  background: transparent;
  pointer-events: none;
}
.reading-progress i {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left center;
}

.portfolio-back {
  position: fixed;
  z-index: 35;
  top: 18px;
  left: 18px;
  border: 1px solid var(--line-strong);
  padding: 8px 11px;
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  font: 11px/1.2 var(--mono);
  text-decoration: none;
  backdrop-filter: blur(10px);
}
.portfolio-back:hover { color: var(--paper); background: var(--ink); }

.page-shell { width: var(--page); margin-inline: auto; }
.section-rule { border-top: 1px solid var(--line); }

.eyebrow,
.section-index,
.mono-note,
.path-card__number,
.reflection-card__label,
.result-card__field,
.metric__label,
.question-kicker,
.preview-signal span {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.35;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.eyebrow { margin-bottom: 16px; color: var(--ink-soft); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  padding: 11px 16px;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms ease, opacity 180ms ease;
}
.button:hover:not(:disabled) { transform: translateY(-2px); }
.button:active:not(:disabled) { transform: translateY(0); }
.button:disabled { cursor: default; opacity: .28; }
.button--primary { color: var(--paper); background: var(--ink); }
.button--text { padding-inline: 4px; background: transparent; }

.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(36px, 5vw, 90px);
  padding-block: clamp(80px, 11vw, 150px);
}
.hero__copy { position: relative; z-index: 2; }
.hero h1 {
  max-width: 780px;
  font-size: clamp(54px, 6.8vw, 106px);
  line-height: .98;
  letter-spacing: -.045em;
}
.hero__lead {
  max-width: 650px;
  margin-top: 34px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(20px, 1.7vw, 27px);
  line-height: 1.55;
}
.hero__actions { display: flex; gap: 22px; align-items: center; margin-top: 36px; }
.hero-map svg { display: block; width: 100%; overflow: visible; }
.hero-map text { fill: var(--ink-soft); font: 12px var(--mono); }
.hero-map__grid line { stroke: var(--line); stroke-width: 1; }
.hero-map__path { fill: none; stroke-width: 2.2; opacity: .75; stroke-linecap: round; }
.hero-map__path:nth-child(3n + 1) { stroke: var(--blue); }
.hero-map__path:nth-child(3n + 2) { stroke: var(--green); }
.hero-map__path:nth-child(3n) { stroke: var(--rose); }
.hero-map__origin { fill: var(--ink); }

.evidence {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-block: clamp(100px, 13vw, 190px);
}
.evidence__content { width: min(100%, 1120px); min-width: 0; margin-inline: auto; }
.evidence__lead {
  max-width: 850px;
  margin-top: 30px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(21px, 2vw, 29px);
}
.evidence-shift {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  gap: clamp(20px, 4vw, 58px);
  margin-top: 70px;
  border-block: 1px solid var(--line);
  padding-block: 34px;
}
.evidence-shift > div:not(.evidence-shift__arrow) { display: flex; flex-direction: column; gap: 13px; }
.evidence-shift__period { max-width: 330px; color: var(--ink-soft); font: 12px/1.45 var(--mono); }
.evidence-shift strong { font-family: var(--serif); font-size: clamp(58px, 8vw, 118px); font-weight: 400; line-height: .88; letter-spacing: -.045em; }
.evidence-shift__arrow { align-self: center; color: var(--line-strong); font: 34px var(--serif); }
.evidence-shift > p { grid-column: 1 / -1; max-width: 760px; color: var(--ink-soft); font-size: 14px; }

.evidence-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 34px;
  border: 1px solid var(--line);
  background: var(--line);
}
.evidence-stats > div { display: flex; min-height: 150px; flex-direction: column; justify-content: space-between; padding: 23px; background: var(--paper-card); }
.evidence-stats strong { font-family: var(--serif); font-size: clamp(35px, 4vw, 56px); font-weight: 400; line-height: 1; }
.evidence-stats span { color: var(--ink-soft); font-size: 13px; }

.evidence-panel,
.field-evidence {
  margin-top: 84px;
  border: 1px solid var(--line);
  padding: clamp(24px, 4vw, 52px);
  background: var(--paper-card);
  box-shadow: 0 20px 70px rgba(23, 23, 20, .045);
}
.evidence-panel__header,
.field-evidence__header { display: flex; align-items: end; justify-content: space-between; gap: 34px; }
.evidence-panel h3,
.field-evidence h3 { max-width: 800px; font-size: clamp(30px, 3.5vw, 52px); line-height: 1.12; }
.evidence-panel__copy { max-width: 800px; margin-top: 18px; color: var(--ink-soft); }
.metric-switch { display: inline-flex; flex: 0 0 auto; border: 1px solid var(--line-strong); padding: 3px; background: var(--paper); }
.metric-switch button { border: 0; padding: 9px 13px; color: var(--ink-soft); background: transparent; font: 12px var(--mono); cursor: pointer; }
.metric-switch button.is-active { color: var(--paper); background: var(--ink); }
.timeline-wrap { width: 100%; margin-top: 34px; overflow-x: auto; overscroll-behavior-inline: contain; }
#evidence-timeline { display: block; width: 100%; min-width: 720px; }
.evidence-chart__grid { stroke: var(--line); stroke-width: 1; }
.evidence-chart__axis { fill: var(--ink-soft); font: 11px var(--mono); }
.evidence-chart__event { stroke: var(--rose); stroke-width: 1.5; stroke-dasharray: 5 6; }
.evidence-chart__event-label { fill: var(--rose); font: 11px var(--mono); }
.evidence-chart__line { fill: none; stroke: var(--ink); stroke-width: 3; vector-effect: non-scaling-stroke; }
.evidence-chart__line--partial { stroke-dasharray: 7 8; }
.evidence-chart__point circle { fill: var(--paper-card); stroke: var(--ink); stroke-width: 2.5; vector-effect: non-scaling-stroke; }
.evidence-chart__point circle.is-partial { stroke-dasharray: 2 2; }
.evidence-chart__value { fill: var(--ink); font: 12px var(--mono); }
.timeline-legend { display: flex; flex-wrap: wrap; gap: 18px; color: var(--ink-soft); font: 11px var(--mono); }
.timeline-legend span { display: inline-flex; align-items: center; gap: 8px; }
.timeline-legend i { display: inline-block; width: 24px; border-top: 2px solid var(--ink); }
.timeline-legend i.is-dashed { border-top-style: dashed; }
.timeline-legend i.is-event { border-color: var(--rose); }
.data-table-details { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 18px; }
.data-table-details summary,
.method-note summary { width: fit-content; cursor: pointer; font: 13px var(--mono); }
.data-table-scroll { margin-top: 18px; overflow-x: auto; }
.data-table-scroll table { width: 100%; min-width: 650px; border-collapse: collapse; font-size: 13px; }
.data-table-scroll th,
.data-table-scroll td { border-bottom: 1px solid var(--line); padding: 10px; text-align: left; }
.data-table-scroll thead th { color: var(--ink-soft); font: 11px var(--mono); }

.field-evidence__header > p { max-width: 420px; color: var(--ink-soft); }
.field-evidence__layout { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr); gap: clamp(28px, 3vw, 44px); margin-top: 52px; align-items: start; }
.field-comparison { border-block: 1px solid var(--line); }
.field-row-wrap + .field-row-wrap { border-top: 1px solid var(--line); }
.field-row {
  width: 100%;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) max-content;
  grid-template-areas:
    "rank name delta"
    "rank shares delta";
  align-items: center;
  gap: 5px 12px;
  border: 0;
  padding: 13px 10px;
  background: transparent;
  text-align: left;
  cursor: pointer;
}
.field-row:hover,
.field-row.is-active { background: var(--paper-deep); }
.field-row__rank { grid-area: rank; align-self: start; margin-top: 4px; color: var(--ink-soft); font: 10px var(--mono); }
.field-row__name { grid-area: name; min-width: 0; font-family: var(--serif); font-size: 15px; line-height: 1.3; overflow-wrap: anywhere; }
.field-row__slope { display: none; position: relative; width: 100%; height: 18px; }
.field-row__slope i { position: absolute; inset: 8px 0 auto; height: 1px; background: linear-gradient(90deg, transparent 0, transparent var(--from), var(--ink) var(--from), var(--ink) var(--to), transparent var(--to)); }
.field-row__slope i::before,
.field-row__slope i::after { content: ""; position: absolute; top: -3px; width: 7px; height: 7px; border-radius: 50%; transform: translateX(-50%); }
.field-row__slope i::before { left: var(--from); border: 1px solid var(--ink); background: var(--paper-card); }
.field-row__slope i::after { left: var(--to); background: var(--ink); }
.field-row__shares { grid-area: shares; display: flex; align-items: center; justify-content: flex-start; gap: 6px; color: var(--ink-soft); font: 9px var(--mono); white-space: nowrap; }
.field-row__shares b { color: var(--line-strong); font-weight: 400; }
.field-row > strong { grid-area: delta; min-width: 66px; color: var(--green); font: 10px var(--mono); text-align: right; white-space: nowrap; }

.field-detail { position: sticky; top: 28px; border: 1px solid var(--line); padding: clamp(22px, 3vw, 38px); background: var(--paper); }
.field-detail h4 { font-family: var(--serif); font-size: clamp(30px, 3.5vw, 48px); font-weight: 400; line-height: 1.1; }
.field-detail__question { margin-top: 22px; color: var(--ink-soft); font-family: var(--serif); font-size: 20px; }
.field-detail__metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 30px 0 0; border: 1px solid var(--line); background: var(--line); }
.field-detail__metrics > div { padding: 15px; background: var(--paper-card); }
.field-detail__metrics dt { color: var(--ink-soft); font: 10px var(--mono); }
.field-detail__metrics dd { margin: 8px 0 0; font-family: var(--serif); font-size: 20px; }
.field-detail__metrics small { display: block; margin-top: 4px; color: var(--ink-soft); font: 10px var(--mono); }
.topic-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 25px; }
.topic-list span { display: inline-flex; gap: 9px; border: 1px solid var(--line); padding: 6px 9px; color: var(--ink-soft); font-size: 11px; }
.topic-list b { color: var(--ink); font-family: var(--mono); font-weight: 400; }
.paper-list { margin-top: 28px; }
.paper-list a { display: flex; flex-direction: column; gap: 4px; border-top: 1px solid var(--line); padding: 13px 0; text-decoration: none; }
.paper-list a:hover span { text-decoration: underline; text-underline-offset: 3px; }
.paper-list small { color: var(--ink-soft); font-size: 11px; }
.field-warning { margin-top: 20px; border-left: 3px solid var(--amber); padding-left: 12px; color: var(--ink-soft); font-size: 12px; }

.method-note { margin-top: 44px; border-block: 1px solid var(--line); padding-block: 22px; }
.method-note__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 24px; border: 1px solid var(--line); background: var(--line); }
.method-note__grid > div { padding: 23px; background: var(--paper-card); }
.method-note__grid h3 { font-size: 23px; }
.method-note__grid p { margin-top: 10px; color: var(--ink-soft); font-size: 14px; }
.method-note ul { columns: 2; gap: 40px; margin: 24px 0 0; padding-left: 20px; color: var(--ink-soft); font-size: 13px; }
.method-note li { break-inside: avoid; margin-bottom: 10px; }
.method-note__source { margin-top: 20px; color: var(--ink-soft); font: 11px/1.6 var(--mono); }
.evidence-status { margin-top: 18px; color: var(--ink-soft); font-size: 12px; }
.evidence-status.is-ready { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
.evidence-status.is-error { border-left: 3px solid var(--rose); padding-left: 12px; color: var(--rose); }

.story,
.paths,
.lens,
.result,
.reflection {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-block: clamp(100px, 13vw, 190px);
}
.section-index {
  width: min(100%, 1120px);
  margin-inline: auto;
  border-bottom: 1px solid var(--line);
  padding: 0 0 12px;
  color: var(--ink-soft);
}
.story__content,
.paths__content,
.lens__content,
.result__content,
.reflection__content { width: min(100%, 1120px); min-width: 0; margin-inline: auto; }
.evidence h2,
.story h2,
.paths h2,
.lens h2,
.explorer h2,
.result h2,
.reflection h2 {
  max-width: 960px;
  font-size: clamp(42px, 5.5vw, 82px);
  line-height: 1.06;
  letter-spacing: -.035em;
}
.story__lead {
  max-width: var(--reading);
  margin-top: 30px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(21px, 2vw, 29px);
}
.task-story {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 72px;
  border: 1px solid var(--line);
  background: var(--line);
}
.task-story article { min-height: 300px; padding: 30px; background: var(--paper-card); }
.task-story h3 { margin-top: 54px; font-size: 29px; }
.task-story p { margin-top: 18px; color: var(--ink-soft); font-size: 15px; }
.task-dot { display: block; width: 18px; height: 18px; border: 1px solid var(--line-strong); }
.task-dot--assist { background: var(--violet); }
.task-dot--automate { background: var(--blue); }
.task-dot--human { background: var(--human); }
.task-dot--new { background: var(--amber); }
.task-field {
  display: grid;
  grid-template-columns: repeat(24, 1fr);
  gap: 5px;
  margin-top: 42px;
}
.task-field i { aspect-ratio: 1; border: 1px solid var(--line-strong); background: var(--paper-card); }
.task-field i[data-kind="assist"] { background: var(--violet); }
.task-field i[data-kind="automate"] { background: var(--blue); }
.task-field i[data-kind="new"] { background: var(--amber); }
.task-field i[data-kind="human"] { background: var(--human); }

.path-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 72px; }
.path-card { min-height: 390px; display: flex; flex-direction: column; padding: 30px; border: 1px solid var(--line); background: var(--paper-card); }
.path-card__number { color: var(--ink-soft); }
.path-card h3 { margin-top: auto; font-size: clamp(32px, 3vw, 48px); }
.path-card p:last-child { margin-top: 20px; color: var(--ink-soft); }
.path-card--blue { box-shadow: inset 0 5px var(--blue); }
.path-card--green { box-shadow: inset 0 5px var(--green); }
.path-card--rose { box-shadow: inset 0 5px var(--rose); }

.explorer { padding-top: clamp(100px, 12vw, 170px); }
.explorer__intro {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
  align-items: end;
  gap: 60px;
  padding-bottom: 80px;
}
.explorer__intro > p { max-width: 530px; color: var(--ink-soft); }
.explorer-stage { color: var(--ink); background: rgba(238, 235, 225, .7); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.explorer-stage__inner {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr);
  gap: clamp(30px, 6vw, 100px);
  align-items: center;
  padding-block: 80px;
}
.question-panel,
.live-preview { min-width: 0; }
.progress-dots { display: flex; gap: 7px; margin-bottom: 42px; }
.progress-dots i { height: 3px; flex: 1; background: var(--line); transition: background-color 220ms ease; }
.progress-dots i.is-on { background: var(--ink); }
.question-view { min-height: 420px; }
.question-kicker { color: var(--ink-soft); }
.question-title { margin-top: 20px; max-width: 650px; font-size: clamp(34px, 4vw, 58px); line-height: 1.12; }
.question-help { max-width: 600px; margin-top: 22px; color: var(--ink-soft); }
.question-readout { display: flex; align-items: baseline; gap: 10px; margin-top: 54px; }
.question-readout output { font-family: var(--serif); font-size: clamp(55px, 6vw, 88px); line-height: 1; }
.question-readout span { color: var(--ink-soft); }
.range {
  width: 100%;
  height: 46px;
  margin-top: 26px;
  appearance: none;
  background: transparent;
  cursor: ew-resize;
}
.range::-webkit-slider-runnable-track { height: 2px; background: linear-gradient(90deg, var(--ink) var(--fill), var(--line-strong) var(--fill)); }
.range::-webkit-slider-thumb {
  width: 23px;
  height: 23px;
  margin-top: -11px;
  appearance: none;
  border: 3px solid var(--paper-deep);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 1px var(--ink);
}
.range::-moz-range-track { height: 2px; background: var(--line-strong); }
.range::-moz-range-progress { height: 2px; background: var(--ink); }
.range::-moz-range-thumb { width: 18px; height: 18px; border: 3px solid var(--paper-deep); border-radius: 50%; background: var(--ink); box-shadow: 0 0 0 1px var(--ink); }
.range-poles { display: flex; justify-content: space-between; color: var(--ink-soft); font-size: 13px; }
.question-actions { display: flex; justify-content: space-between; gap: 24px; margin-top: 34px; }

.field-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 38px; }
.field-option {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--line);
  padding: 16px 18px;
  background: var(--paper-card);
  text-align: left;
  cursor: pointer;
}
.field-option::after { content: "○"; font-family: var(--mono); }
.field-option.is-selected { color: var(--paper); background: var(--ink); border-color: var(--ink); }
.field-option.is-selected::after { content: "●"; }
.custom-field { display: grid; grid-template-columns: 1fr auto; gap: 10px; margin-top: 10px; }
.custom-field input { width: 100%; border: 1px solid var(--line); padding: 15px 16px; color: var(--ink); background: var(--paper-card); }

.live-preview { padding: 34px; border: 1px solid var(--line); background: var(--paper-card); box-shadow: 0 18px 50px rgba(23, 23, 20, .055); }
.live-preview__field { font-family: var(--serif); font-size: 28px; }
.impact-orbit { width: min(100%, 440px); margin: 18px auto 10px; }
.impact-orbit svg { display: block; width: 100%; overflow: visible; }
.impact-orbit__ring { fill: none; stroke: var(--line); stroke-width: 1; }
.impact-orbit__axis { stroke: var(--line); stroke-width: 1; }
.impact-orbit__shape { fill: rgba(120, 139, 95, .18); stroke: var(--green); stroke-width: 2; transition: d 420ms var(--ease), fill 220ms ease, stroke 220ms ease; }
.impact-orbit__label { fill: var(--ink-soft); font: 11px var(--mono); }
.preview-signal { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding-top: 20px; }
.preview-signal span { color: var(--ink-soft); }
.preview-signal strong { font-family: var(--serif); font-size: 25px; font-weight: 400; }

.result-card { margin-top: 62px; border: 1px solid var(--line); padding: clamp(24px, 4vw, 56px); background: var(--paper-card); box-shadow: 0 20px 70px rgba(23, 23, 20, .05); }
.result-card__header { display: flex; justify-content: space-between; align-items: start; gap: 24px; }
.result-card__field { margin-bottom: 10px; color: var(--ink-soft); }
.result-card h3 { font-size: clamp(36px, 4.5vw, 68px); }
.result-chip { border: 1px solid currentColor; padding: 7px 10px; font: 12px var(--mono); }
.result-chip[data-kind="tool"] { color: var(--blue); }
.result-chip[data-kind="collab"] { color: var(--green); }
.result-chip[data-kind="transform"] { color: var(--rose); }
.result-card__summary { max-width: 850px; margin-top: 28px; color: var(--ink-soft); font-family: var(--serif); font-size: clamp(20px, 2vw, 28px); }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: 48px; border: 1px solid var(--line); background: var(--line); }
.metric { padding: 24px; background: var(--paper-card); }
.metric__label { color: var(--ink-soft); }
.metric__value { display: block; margin-top: 14px; font-family: var(--serif); font-size: clamp(32px, 3vw, 47px); font-weight: 400; }
.metric__note { display: block; margin-top: 7px; color: var(--ink-soft); font-size: 13px; }
.trajectory-chart { margin-top: 54px; border-top: 1px solid var(--line); padding-top: 28px; }
.trajectory-chart figcaption { display: flex; justify-content: space-between; gap: 24px; }
.mono-note { color: var(--ink-soft); }
#trajectory { display: block; width: 100%; min-height: 330px; margin-top: 18px; overflow: visible; }
.chart-grid { stroke: var(--line); stroke-width: 1; }
.chart-axis { fill: var(--ink-soft); font: 11px var(--mono); }
.chart-line { fill: none; stroke-width: 2.5; vector-effect: non-scaling-stroke; }
.chart-line--human { stroke: var(--ink); }
.chart-line--collab { stroke: var(--green); }
.chart-line--ai { stroke: var(--rose); }
.chart-label { font: 12px var(--mono); }

.reflection-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 70px; border: 1px solid var(--line); background: var(--line); }
.reflection-card { min-height: 310px; display: flex; flex-direction: column; padding: 30px; background: var(--paper-card); }
.reflection-card__label { color: var(--ink-soft); }
.reflection-card h3 { margin-top: auto; font-size: 33px; }
.reflection-card p:last-child { margin-top: 16px; color: var(--ink-soft); }
.reflection-prompt { display: flex; align-items: end; justify-content: space-between; gap: 42px; margin-top: 70px; border-top: 1px solid var(--line); padding-top: 40px; }
.reflection-prompt blockquote { max-width: 900px; font-family: var(--serif); font-size: clamp(27px, 3.3vw, 48px); line-height: 1.35; }

.lens-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 70px;
  border: 1px solid var(--line);
  background: var(--line);
}
.lens-card {
  min-height: 340px;
  display: flex;
  flex-direction: column;
  padding: 30px;
  background: var(--paper-card);
}
.lens-card > span { color: var(--ink-soft); font: 11px var(--mono); }
.lens-card h3 { margin-top: auto; font-size: clamp(28px, 3vw, 42px); }
.lens-card p { margin-top: 18px; color: var(--ink-soft); font-size: 15px; }
.lens-card:nth-child(1) { box-shadow: inset 0 5px var(--blue); }
.lens-card:nth-child(2) { box-shadow: inset 0 5px var(--green); }
.lens-card:nth-child(3) { box-shadow: inset 0 5px var(--rose); }

.field-options--disciplines {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-height: 430px;
  overflow: auto;
  padding-right: 5px;
}
.field-options--disciplines .field-option { min-height: 64px; }
.field-options--disciplines .field-option::after { content: "○"; }
.field-options--disciplines .field-option.is-selected::after { content: "●"; }

.choice-options { display: grid; gap: 10px; margin-top: 38px; }
.choice-option {
  display: grid;
  grid-template-columns: minmax(150px, .45fr) minmax(0, 1fr);
  align-items: start;
  gap: 22px;
  width: 100%;
  border: 1px solid var(--line);
  padding: 18px;
  background: var(--paper-card);
  text-align: left;
  cursor: pointer;
}
.choice-option span { font-family: var(--serif); font-size: 21px; }
.choice-option small { color: var(--ink-soft); font-size: 13px; line-height: 1.6; }
.choice-option.is-selected { color: var(--paper); border-color: var(--ink); background: var(--ink); }
.choice-option.is-selected small { color: rgba(248, 246, 239, .72); }

.field-snapshot {
  min-width: 0;
  border: 1px solid var(--line);
  padding: clamp(26px, 4vw, 44px);
  background: var(--paper-card);
  box-shadow: 0 18px 50px rgba(23, 23, 20, .055);
}
.field-snapshot h3 { max-width: 560px; font-size: clamp(33px, 4vw, 56px); line-height: 1.08; }
.snapshot-shares {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 18px;
  margin-top: 44px;
  border-block: 1px solid var(--line);
  padding-block: 22px;
}
.snapshot-shares div { display: grid; gap: 8px; }
.snapshot-shares span, .snapshot-angle span { color: var(--ink-soft); font: 11px var(--mono); }
.snapshot-shares strong { font-family: var(--serif); font-size: clamp(30px, 4vw, 50px); font-weight: 400; }
.snapshot-shares i { color: var(--ink-soft); font-style: normal; }
.snapshot-change { margin-top: 16px; color: var(--green); font: 12px/1.6 var(--mono); }
.snapshot-topics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.snapshot-topics span { display: inline-flex; gap: 9px; border: 1px solid var(--line); padding: 7px 10px; color: var(--ink-soft); font-size: 11px; }
.snapshot-topics b { color: var(--ink); font-family: var(--mono); font-weight: 400; }
.snapshot-angle { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-top: 34px; border-top: 1px solid var(--line); padding-top: 22px; }
.snapshot-angle strong { font-family: var(--serif); font-size: 24px; font-weight: 400; }

.research-result { margin-top: 62px; border: 1px solid var(--line); padding: clamp(24px, 4vw, 56px); background: var(--paper-card); box-shadow: 0 20px 70px rgba(23, 23, 20, .05); }
.research-result__header { display: flex; justify-content: space-between; align-items: start; gap: 24px; }
.research-result h3 { font-size: clamp(32px, 4vw, 58px); }
.result-facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: 46px; border: 1px solid var(--line); background: var(--line); }
.result-facts > div { min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; gap: 20px; padding: 22px; background: var(--paper-card); }
.result-facts span { color: var(--ink-soft); font: 11px var(--mono); }
.result-facts strong { font-family: var(--serif); font-size: clamp(23px, 2.4vw, 36px); font-weight: 400; line-height: 1.15; }
.research-result .reflection-grid { margin-top: 54px; }
.reflection-card--question { background: #f3f0e7; }
.research-result .reflection-prompt { margin-top: 54px; }

.footer { display: flex; justify-content: space-between; align-items: center; gap: 24px; border-top: 1px solid var(--line); padding-block: 36px 50px; color: var(--ink-soft); font-size: 13px; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity 720ms var(--ease), transform 720ms var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1180px) {
  .field-evidence__layout { grid-template-columns: 1fr; }
  .field-detail { position: static; }
}

@media (max-width: 1050px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-map { max-width: 820px; margin-inline: auto; }
  .evidence-stats { grid-template-columns: repeat(2, 1fr); }
  .field-evidence__layout { grid-template-columns: 1fr; }
  .field-detail { position: static; }
  .task-story { grid-template-columns: repeat(2, 1fr); }
  .explorer-stage__inner { grid-template-columns: 1fr 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .result-facts { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  :root { --page: min(100% - 28px, 1380px); }
  body { font-size: 16px; }
  .portfolio-back { top: 10px; left: 10px; }
  .hero { padding-block: 70px 100px; }
  .hero h1 { font-size: clamp(48px, 14vw, 72px); }
  .hero__actions { align-items: stretch; flex-direction: column; }
  .hero-map { margin-top: 30px; }
  .evidence, .story, .paths, .lens, .result, .reflection { grid-template-columns: 1fr; }
  .section-index { border-bottom: 1px solid var(--line); padding-bottom: 12px; }
  .evidence-shift { grid-template-columns: 1fr; align-items: start; }
  .evidence-shift__arrow { transform: rotate(90deg); }
  .evidence-shift > p { grid-column: auto; }
  .evidence-stats { grid-template-columns: 1fr 1fr; }
  .evidence-stats > div { min-height: 125px; }
  .evidence-panel__header, .field-evidence__header { align-items: flex-start; flex-direction: column; }
  .field-row { grid-template-columns: 24px minmax(0, 1fr) max-content; gap: 4px 8px; padding-inline: 7px; }
  .field-detail__metrics, .method-note__grid { grid-template-columns: 1fr; }
  .method-note ul { columns: 1; }
  .task-story, .path-cards, .lens-grid, .reflection-grid { grid-template-columns: 1fr; }
  .task-story article { min-height: 230px; }
  .task-field { grid-template-columns: repeat(12, 1fr); }
  .path-card { min-height: 330px; }
  .explorer__intro { grid-template-columns: 1fr; gap: 28px; }
  .explorer-stage__inner { grid-template-columns: 1fr; min-height: auto; }
  .question-view { min-height: 440px; }
  .live-preview { order: -1; }
  .impact-orbit { max-width: 320px; }
  .field-options { grid-template-columns: 1fr; }
  .field-options--disciplines { max-height: none; }
  .choice-option { grid-template-columns: 1fr; gap: 6px; }
  .custom-field { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr; }
  .result-card__header, .research-result__header, .trajectory-chart figcaption, .reflection-prompt, .footer { align-items: flex-start; flex-direction: column; }
  .result-facts { grid-template-columns: 1fr; }
  #trajectory { min-height: 260px; }
}

@media (max-width: 480px) {
  .evidence-stats { grid-template-columns: 1fr; }
  .field-row {
    grid-template-columns: 22px minmax(0, 1fr) max-content;
    grid-template-areas: "rank name delta";
  }
  .field-row__shares { display: none; }
  .field-row > strong { min-width: 60px; font-size: 9px; }
}

@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; }
}