:root {
  --background: #f5f5f5;
  --ink: #1b1b1b;
  --muted: #595959;
  --line: #d9d9d6;
  --accent: #a63d16;
  --accent-soft: #f5e9e2;
  --serif: Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 35px; }
body { margin: 0; padding: 62px 30px 36px; background: var(--background); color: var(--ink); font-family: var(--serif); font-size: 20px; line-height: 1.7; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-underline-offset: 4px; }
a:hover { color: var(--accent); }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
[hidden] { display: none !important; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 10; padding: 10px 18px; background: white; }
.skip-link:focus { top: 12px; }
.main-content { width: 100%; max-width: 1040px; margin: 0 auto; }
.toc { display: none; position: fixed; top: 160px; left: max(20px, calc((100vw - 1760px) / 2)); width: 160px; font-family: var(--mono); font-size: 12px; }
.toc > a { display: block; padding: 5px 0; text-decoration: none; }
.toc .toc-brand { font-family: var(--serif); font-size: 24px; font-weight: bold; padding-bottom: 25px; }
.toc-brand span { display: block; margin-top: 5px; font: 9px/1.6 var(--mono); color: var(--muted); }
.toc-label { border-bottom: 1px solid var(--line); padding-bottom: 10px; margin: 0 0 10px; font-family: var(--serif); font-size: 17px; }
.toc a[aria-current="location"] { color: var(--accent); font-weight: bold; }
.toc .toc-repository { margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 10px; }
.hero { text-align: center; }
.eyebrow { font: 11px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin: 0 0 15px; }
h1 { font-size: clamp(46px, 7vw, 66px); line-height: 1.08; letter-spacing: -2px; margin: 0 0 14px; }
.subtitle { font-size: 32px; line-height: 1.23; margin: 0 auto 29px; max-width: 950px; }
.subtitle-line { display: block; }
.authors { font: 13px/1.8 var(--mono); }
.author-row { display: flex; justify-content: center; flex-wrap: wrap; column-gap: 16px; row-gap: 3px; }
.author-row + .author-row { margin-top: 3px; }
.author-row > span { white-space: nowrap; }
.authors a { text-decoration: none; }
.authors a:hover { text-decoration: underline; }
sup { font-size: .7em; vertical-align: super; line-height: 0; }
.affiliations { display: flex; justify-content: center; flex-wrap: wrap; gap: 3px 19px; font: 12px/1.8 var(--mono); margin-top: 13px; }
.author-notes { color: var(--muted); font: 11px/1.8 var(--mono); margin: 8px 0 0; }
.quick-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin: 28px 0 24px; }
.quick-links a, .quick-links button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 9px 19px; border: 1px solid var(--ink); border-radius: 999px; background: var(--ink); color: white; font: 12px/1.6 var(--mono); text-decoration: none; }
.quick-links a:hover { background: var(--accent); border-color: var(--accent); }
.quick-links .resource-pending { color: var(--muted); background: transparent; border-color: #c8c8c4; cursor: default; }
.resource-pending span { font-size: 9px; padding-left: 8px; border-left: 1px solid #c8c8c4; }
figure { margin: 25px 0 35px; }
img, video { display: block; width: 100%; height: auto; }
video { border-radius: 9px; background: #171717; aspect-ratio: 16 / 9; object-fit: contain; }
.hero-video { margin-top: 0; }
figcaption { font: 12px/1.8 var(--mono); text-align: center; color: var(--muted); margin-top: 13px; padding: 0 14px; }
.figure-link { display: block; border-radius: 8px; }
.figure-link img { border: 1px solid var(--line); border-radius: 8px; background: white; }
section { margin-top: 62px; }
h2 { font-size: 27px; line-height: 1.3; padding-bottom: 9px; border-bottom: 2px solid var(--ink); width: fit-content; max-width: 100%; margin: 0 0 22px; }
h3 { font-size: 22px; line-height: 1.4; margin: 0; }
p { margin: 0 0 20px; }
.section-lead { font-size: 26px; line-height: 1.4; font-style: italic; margin-bottom: 17px; }
.stats { display: grid; grid-template-columns: 1fr 1.6fr 1fr 1fr; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin: 31px 0; padding: 22px 0; gap: 15px; }
.stats > div { padding-left: 18px; border-left: 1px solid var(--line); }
.stats > div:first-child { border-left: 0; padding-left: 0; }
.stats strong { display: block; font-size: 31px; line-height: 1.3; white-space: nowrap; }
.stats small { font-size: 19px; font-weight: normal; }
.stats span { display: block; font: 10px/1.6 var(--mono); color: var(--muted); margin-top: 8px; }
.tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 28px 0 23px; }
.tab { border: 1px solid var(--line); border-radius: 4px; background: #e7e7e5; color: var(--ink); padding: 9px 15px; font: 12px/1.6 var(--mono); }
.tab:hover { background: #d9d9d5; }
.tab.active { background: var(--ink); color: white; border-color: var(--ink); }
[role="tabpanel"] figure { margin-top: 0; }
.annotation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start; }
.annotation-grid figure { margin: 0; }
.annotation-grid img { aspect-ratio: 1.45; object-fit: contain; padding: 8px; }
.task-hierarchy { margin-top: 32px; }
.task-level { padding: 27px; border: 1px solid #deded8; border-radius: 16px; background: #fff; box-shadow: 0 7px 22px #20251f06; }
.level-heading { display: flex; gap: 16px; align-items: center; margin-bottom: 24px; }
.level-number { display: grid; place-items: center; flex: 0 0 48px; width: 48px; height: 48px; border-radius: 13px; font: bold 16px/1 var(--mono); background: #f0f0eb; color: var(--ink); }
.level-heading h3 { font-size: 24px; }
.level-kicker { font: 10px/1.6 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 0 0 4px; }
.episode-count { margin-left: auto; text-align: right; white-space: nowrap; font: 12px/1.7 var(--mono); }
.episode-count small { display: block; font-size: 10px; color: var(--muted); }
.primitives { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.stage-exit { --stage: #a8470b; --stage-bg: #fff3e8; --stage-line: #f1c8a9; }
.stage-outdoor { --stage: #1261a0; --stage-bg: #eaf4ff; --stage-line: #b7d7f4; }
.stage-entrance { --stage: #7635aa; --stage-bg: #f6edfc; --stage-line: #dec7ef; }
.stage-ovon { --stage: #007976; --stage-bg: #e6f6f3; --stage-line: #a9dcd2; }
.primitive { position: relative; border: 1px solid var(--stage-line); border-top: 3px solid var(--stage); background: var(--stage-bg); border-radius: 10px; padding: 18px 15px; }
.stage-index { display: block; color: var(--stage); font: 11px/1.5 var(--mono); letter-spacing: .1em; margin-bottom: 12px; }
.primitive h4 { color: var(--stage); font: bold 14px/1.5 var(--mono); margin: 0 0 10px; }
.primitive p { font-size: 16px; line-height: 1.6; margin: 0; color: #333c40; }
.level-connector { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 0; font: 10px/1.5 var(--mono); color: var(--muted); letter-spacing: .04em; }
.level-connector > span { font: 23px/1 var(--serif); color: #7b837d; }
.compositions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.composition-card { border: 1px solid #e5e5df; border-radius: 10px; padding: 19px; background: #fafaf8; }
.composition-card h4 { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; margin: 0 0 18px; font: bold 17px/1.5 var(--mono); }
.composition-card h4 > span { font: normal 11px/1.6 var(--mono); color: var(--muted); }
.composition-row { display: flex; align-items: center; gap: 10px; }
.stage-chip { flex: 1; text-align: center; border: 1px solid var(--stage-line); border-radius: 7px; padding: 10px 7px; background: var(--stage-bg); color: var(--stage); font: bold 12px/1.6 var(--mono); }
.stage-arrow { flex: 0 0 auto; color: #737d80; font: 22px/1 var(--serif); }
.full-mission { background: #182b33; color: #fff; border-color: #182b33; box-shadow: 0 12px 30px #182b3314; }
.full-mission .level-number { background: #ffffff18; color: #fff; }
.full-mission .level-kicker, .full-mission .episode-count small { color: #c0ced1; }
.mission-route { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr); gap: 10px; align-items: center; }
.mission-stage { padding: 17px 12px; background: var(--stage-bg); color: var(--stage); border: 1px solid var(--stage-line); border-radius: 10px; text-align: center; }
.mission-stage .stage-index { margin-bottom: 8px; }
.mission-stage strong { display: block; font: bold 14px/1.5 var(--mono); }
.mission-stage > span:last-child { display: block; margin-top: 7px; color: #38494e; font-size: 13px; line-height: 1.5; }
.full-mission .stage-arrow { color: #afc3ca; }
.mission-rule { margin: 23px 0 0; text-align: center; font-size: 18px; }
.mission-rule > span { display: block; font: 10px/1.7 var(--mono); color: #c0ced1; margin-top: 7px; }
.evaluation-context { font: 12px/1.8 var(--mono); color: var(--muted); border-left: 2px solid var(--line); padding-left: 17px; }
.result-level { margin-top: 34px; }
.table-wrap { overflow-x: auto; margin: 22px 0 10px; border: 1px solid var(--line); border-radius: 5px; background: #fafafa; }
table { width: 100%; border-collapse: collapse; font: 11px/1.6 var(--mono); text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
caption { text-align: left; font: bold 13px/1.5 var(--mono); color: var(--ink); padding: 13px 15px; border-bottom: 1px solid var(--line); background: #eeeeeb; }
th, td { padding: 11px 10px; border-bottom: 1px solid #e7e7e4; }
thead th { font-size: 10px; background: #f0f0ed; }
thead tr:first-child th[colspan] { text-align: center; }
th:first-child { text-align: left; }
tbody th { font-weight: normal; }
tbody tr:last-child td, tbody tr:last-child th { border-bottom: 0; }
.agent-row { background: var(--accent-soft); }
.table-note { font: 11px/1.8 var(--mono); color: var(--muted); }
.metric-definitions { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 17px 0; margin-top: 25px; }
summary { font: 12px/1.8 var(--mono); cursor: pointer; }
.metric-definitions p { font: 12px/1.9 var(--mono); color: var(--muted); margin: 17px 0 0; }
.bibtex-block { border-radius: 7px; background: #292929; color: #f2f2ee; padding: 19px 23px; }
.bibtex-toolbar { display: flex; justify-content: space-between; align-items: center; font: 13px/1.6 var(--mono); }
.bibtex-toolbar button { color: #f2f2ee; background: #444; padding: 6px 14px; border: 1px solid #666; border-radius: 4px; font: 11px/1.6 var(--mono); }
.bibtex-toolbar button:hover { background: #555; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; margin: 20px 0 0; font: 12px/1.85 var(--mono); }
code { font-family: inherit; }
.copy-status { font: 11px/1.7 var(--mono); margin: 9px 0 0; min-height: 19px; color: #d7d7d2; }
footer { text-align: center; border-top: 1px solid var(--line); margin-top: 65px; padding-top: 27px; font: 11px/1.8 var(--mono); color: var(--muted); }
footer p { margin: 12px 0; }
@media (min-width: 1450px) { .toc { display: block; } }
@media (max-width: 800px) {
  body { padding: 35px 20px; font-size: 18px; }
  .subtitle { font-size: 27px; }
  .authors { font-size: 12px; }
  .author-row { column-gap: 14px; }
  .stats { grid-template-columns: 1fr 1.5fr; gap: 22px 15px; }
  .stats > div:nth-child(3) { border-left: 0; padding-left: 0; }
  .primitives { grid-template-columns: 1fr 1fr; }
  .task-level { padding: 22px; }
  .level-heading { flex-wrap: wrap; gap: 12px; }
  .level-heading h3 { font-size: 22px; }
  .compositions { grid-template-columns: 1fr; }
  .mission-route { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
  .mission-route > .stage-arrow:nth-child(4) { display: none; }
  h2 { font-size: 25px; }
  section { margin-top: 47px; }
}
@media (max-width: 480px) {
  body { padding: 28px 16px; font-size: 17px; }
  h1 { font-size: 46px; }
  .subtitle { font-size: 24px; }
  .eyebrow { font-size: 9px; }
  .affiliations { display: grid; gap: 4px; }
  .quick-links { gap: 8px; }
  .quick-links a, .quick-links button { padding: 8px 14px; font-size: 11px; }
  .stats strong { font-size: 25px; }
  .stats small { font-size: 16px; }
  .stats span { font-size: 9px; }
  h2 { font-size: 23px; }
  h3 { font-size: 20px; }
  figcaption { font-size: 10px; padding: 0; }
  .annotation-grid { grid-template-columns: 1fr; }
  .tab { padding: 8px 10px; font-size: 10px; }
  .task-level { padding: 18px 14px; border-radius: 12px; }
  .level-number { flex-basis: 40px; width: 40px; height: 40px; border-radius: 10px; font-size: 14px; }
  .level-heading { align-items: flex-start; }
  .level-heading > div { flex: 1; min-width: 0; }
  .level-heading h3 { font-size: 20px; }
  .level-kicker { font-size: 9px; }
  .episode-count { width: 100%; margin-left: 52px; text-align: left; font-size: 10px; }
  .episode-count small { display: inline; margin-left: 5px; }
  .primitives { gap: 9px; }
  .primitive { padding: 14px 11px; }
  .primitive h4 { font-size: 12px; }
  .primitive p { font-size: 14px; }
  .composition-card { padding: 15px 12px; }
  .composition-row { gap: 7px; }
  .stage-chip { padding: 9px 5px; font-size: 11px; }
  .mission-route { gap: 9px; }
  .mission-stage { padding: 14px 8px; }
  .mission-stage strong { font-size: 12px; }
  .mission-stage > span:last-child { font-size: 12px; }
  .mission-rule { font-size: 16px; }
  .mission-rule > span { font-size: 9px; }
  .bibtex-block { padding: 16px; }
  pre { font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

@media (max-width: 360px) {
  .primitives { grid-template-columns: 1fr; }
  .mission-route { display: flex; flex-direction: column; }
  .mission-stage { width: 100%; }
  .mission-route > .stage-arrow { transform: rotate(90deg); }
  .mission-route > .stage-arrow:nth-child(4) { display: block; }
}