:root {
  --bg: #fafbfc;
  --text: #101316;
  --muted: #5f666d;
  --light: #7d858d;
  --fill: #f0f2f3;
  --fill-strong: #e5e8ea;
  --line: #d9dee1;
  --accent: #1d5f5a;
  --accent-soft: #e4f0ee;
  --link: #101316;
  --invert-bg: #101316;
  --invert-text: #fafbfc;
  --max: 1120px;
  --sans: "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #111416;
  --text: #f0f2f3;
  --muted: #aab2b7;
  --light: #879196;
  --fill: #1a1e20;
  --fill-strong: #252b2e;
  --line: #30383b;
  --accent: #76c4b7;
  --accent-soft: #1c3733;
  --link: #f0f2f3;
  --invert-bg: #f0f2f3;
  --invert-text: #111416;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 180ms ease, color 180ms ease;
}

a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent); }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.site {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 28px 96px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 10000;
  padding: 8px 12px;
  color: var(--invert-text);
  background: var(--invert-bg);
}
.skip-link:focus { top: 16px; }

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 1.6px;
  text-transform: uppercase;
}
h1, h2, h3, h4 { margin: 0; line-height: 1.2; font-weight: 750; letter-spacing: 0; }
h1 { max-width: 820px; font-size: clamp(37px, 5.3vw, 67px); }
.hero h1 { white-space: nowrap; }
h2 { font-size: 29px; }
h3 { font-size: 20px; }
p { margin: 0 0 18px; }
.lead { max-width: 780px; margin-top: 26px; font-size: 20px; color: var(--muted); }
.muted { color: var(--muted); }
.small { color: var(--light); font-size: 14px; }
.mono { font-variant-numeric: tabular-nums; }

.hero { padding: 12px 0 68px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 64px; align-items: end; }
.hero-role { margin-top: 16px; color: var(--text); font-size: 22px; font-weight: 650; }
.hero-availability { margin: 18px 0 0; color: var(--muted); font-size: 15px; }
.hero-availability strong { color: var(--accent); font-weight: 700; }
.hero-aside { border-left: 3px solid var(--accent); padding: 4px 0 4px 22px; }
.hero-aside p { margin: 0; color: var(--muted); font-size: 15px; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 32px 0 0; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: transparent;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.button:hover { color: var(--text); background: var(--fill); border-color: var(--text); transform: translateY(-1px); }
.button--dark { color: var(--invert-text); background: var(--invert-bg); border-color: var(--invert-bg); }
.button--dark:hover { color: var(--invert-text); background: var(--accent); border-color: var(--accent); }
.button--quiet { border-color: transparent; }

.signal-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 0 0 90px; }
.signal { min-height: 132px; padding: 22px 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.signal-value { display: block; font-size: 30px; line-height: 1.1; font-weight: 750; }
.signal-value--text { max-width: 190px; font-size: 24px; line-height: 1.15; }
.signal-label { display: block; margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.45; }

.section { padding: 34px 0 0; }
.section + .section { margin-top: 86px; }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: baseline; margin-bottom: 24px; }
.section-head p { max-width: 540px; margin: 0; color: var(--muted); font-size: 15px; }
.section-head--wide-title, .detail-section[aria-labelledby="skill-map-title"] .section-head, .detail-section[aria-labelledby="evidence-title"] .section-head { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 24px; align-items: baseline; }
.section-head--wide-title > div, .section-head--wide-title > p, .detail-section[aria-labelledby="skill-map-title"] .section-head > div, .detail-section[aria-labelledby="skill-map-title"] .section-head > p, .detail-section[aria-labelledby="evidence-title"] .section-head > div, .detail-section[aria-labelledby="evidence-title"] .section-head > p { min-width: 0; }
.section-head--wide-title h2, .detail-section[aria-labelledby="skill-map-title"] .section-head h2, .detail-section[aria-labelledby="evidence-title"] .section-head h2 { font-size: 29px; }
.section-head--wide-title > p, .detail-section[aria-labelledby="skill-map-title"] .section-head > p, .detail-section[aria-labelledby="evidence-title"] .section-head > p { max-width: 500px; font-size: 15px; justify-self: end; }
.section-link { flex: none; font-size: 14px; font-weight: 700; }

.evidence-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.evidence-card { display: flex; flex-direction: column; min-height: 312px; padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.evidence-card:hover { border-color: var(--accent); }
.evidence-grid > a.evidence-card { color: var(--text); text-decoration: none; }
.evidence-grid > a.evidence-card:hover { color: var(--text); }
.evidence-grid > a.evidence-card * { text-decoration: none; }
.card-kicker { margin-bottom: 17px; color: var(--accent); font-size: 12px; font-weight: 750; letter-spacing: 1px; text-transform: uppercase; }
.evidence-card h3 { max-width: 320px; }
.evidence-card p { margin-top: 14px; color: var(--muted); font-size: 15px; line-height: 1.6; }
.card-result { margin-top: auto; padding-top: 22px; color: var(--text); font-size: 14px; font-weight: 700; }
.card-result span { color: var(--accent); }
.tag-list { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin: 16px 0 0; padding: 0; list-style: none; }
.tag { display: inline-flex; align-items: center; min-height: 26px; padding: 4px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 12px; line-height: 1.3; white-space: nowrap; }

.timeline { border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 32px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.timeline-date { color: var(--accent); font-size: 14px; font-weight: 700; }
.timeline-item h3 { margin-bottom: 4px; }
.timeline-company { margin-bottom: 12px; color: var(--muted); font-size: 15px; }
.timeline-item ul { margin: 0; padding-left: 20px; color: var(--muted); font-size: 15px; }
.timeline-item li + li { margin-top: 7px; }
.experience-bridge { max-width: 780px; margin: 16px 0 0; padding-left: 16px; border-left: 3px solid var(--accent); color: var(--muted); font-size: 16px; }
.experience-bridge strong { color: var(--text); }
.timeline--detail .timeline-item { display: block; }
.timeline-item-head { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; }
.timeline--detail .timeline-item-head h3 { margin: 0; }
.timeline--detail .timeline-date { flex: none; white-space: nowrap; }
.timeline--detail .timeline-company { margin: 7px 0 14px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.plain-panel { padding: 24px; border: 1px solid var(--line); border-radius: 8px; }
.plain-panel h3 { margin-bottom: 10px; }
.plain-panel p { margin: 0; color: var(--muted); font-size: 15px; }
.plain-panel--accent { background: var(--accent-soft); border-color: transparent; }
.split > a.plain-panel { color: var(--text); text-decoration: none; }
.split > a.plain-panel:hover { color: var(--text); border-color: var(--accent); }

.link-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.link-card { min-height: 156px; padding: 20px; border: 1px solid var(--line); border-radius: 8px; text-decoration: none; }
.link-card:hover { border-color: var(--accent); color: var(--text); }
.link-card strong { display: block; font-size: 18px; }
.link-card span { display: block; margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.5; }

.skill-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.skill-panel { min-height: 214px; padding: 22px; border: 1px solid var(--line); border-radius: 8px; }
.skill-panel h3 { margin-bottom: 10px; }
.skill-panel p { margin: 0; color: var(--muted); font-size: 15px; }
.skill-panel .tag-list { margin-top: 18px; }
.story-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 18px; }
.story-grid--journey { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.story-grid--journey > .story-panel { min-height: 345px; box-sizing: border-box; }
.story-panel { padding: 24px; border: 1px solid var(--line); border-radius: 8px; }
.story-panel--accent { background: var(--accent-soft); border-color: transparent; }
.story-panel h3 { margin-bottom: 12px; }
.story-panel p { color: var(--muted); }
.story-panel p:last-child { margin-bottom: 0; }
.story-principles { display: grid; gap: 14px; margin-top: 22px; }
.story-principle { padding-top: 14px; border-top: 1px solid var(--line); }
.story-principle strong { display: block; margin-bottom: 4px; color: var(--text); }
.story-principle span { color: var(--muted); font-size: 15px; }

.detail-header { width: 100%; padding: 16px 0 42px; }
.detail-header h1 { max-width: 760px; font-size: clamp(38px, 5vw, 58px); text-wrap: balance; overflow-wrap: anywhere; }
.detail-header h1.detail-title--two-line { max-width: 800px; font-size: clamp(38px, 4.7vw, 54px); }
.detail-header h1.detail-title--compact { max-width: 520px; }
.detail-header .lead { font-size: 18px; }
.detail-header--credentials .lead { max-width: 1000px; }
.detail-header--story .lead { max-width: 840px; }
.back-link { display: inline-flex; margin-bottom: 30px; color: var(--muted); font-size: 14px; font-weight: 700; text-decoration: none; }
.back-link:hover { color: var(--accent); }
.detail-section { width: 100%; padding: 42px 0; border-top: 1px solid var(--line); }
.detail-section h2 { margin-bottom: 22px; }
.detail-section h3 { margin: 30px 0 10px; }
.detail-section p, .detail-section li { color: var(--muted); }
.detail-section ul { margin-top: 0; padding-left: 20px; }
.detail-section li + li { margin-top: 8px; }

.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 26px 0 0; }
.metric { padding: 18px; background: var(--fill); border-radius: 8px; }
.metric strong { display: block; font-size: 25px; line-height: 1.15; }
.metric span { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; line-height: 1.45; }
.source-note { margin-top: 24px; padding-left: 16px; border-left: 3px solid var(--accent); color: var(--muted); font-size: 14px; }

.credential-summary { display: grid; grid-template-columns: 1fr 2fr; gap: 18px; margin: 8px 0 34px; }
.credential-summary-main { padding: 24px; background: var(--invert-bg); color: var(--invert-text); border-radius: 8px; }
.credential-summary-main strong { display: block; font-size: 42px; line-height: 1; }
.credential-summary-main span { display: block; margin-top: 12px; font-size: 14px; opacity: .78; }
.issuer-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--light); background: var(--bg); }
.issuer-count { padding: 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg); }
.issuer-count:nth-child(3n) { border-right: 0; }
.issuer-count strong { display: block; font-size: 18px; }
.issuer-count span { color: var(--muted); font-size: 13px; }
.credential-toolbar { display: grid; grid-template-columns: minmax(0, 1fr) 220px 220px; gap: 12px; margin-bottom: 22px; }
.field { width: 100%; min-height: 44px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 7px; color: var(--text); background: var(--bg); }
.field:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.credential-status { margin: 14px 0; color: var(--muted); font-size: 14px; }
.credential-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.credential-card { display: flex; flex-direction: column; min-height: 216px; padding: 18px; border: 1px solid var(--line); border-radius: 8px; }
.credential-card:hover { border-color: var(--accent); }
.credential-issuer { color: var(--accent); font-size: 12px; font-weight: 750; letter-spacing: 1px; text-transform: uppercase; }
.credential-card h3 { margin-top: 13px; font-size: 17px; line-height: 1.35; }
.credential-meta { margin-top: auto; padding-top: 20px; color: var(--muted); font-size: 13px; }
.credential-meta strong { color: var(--text); font-weight: 700; }
.credential-link { display: inline-block; margin-top: 7px; font-size: 13px; font-weight: 700; }
.empty-state { grid-column: 1 / -1; padding: 32px; border: 1px dashed var(--line); color: var(--muted); text-align: center; }

.publication-meta { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 12px; margin: 30px 0; }
.publication-meta dt { color: var(--accent); font-size: 13px; font-weight: 750; text-transform: uppercase; }
.publication-meta dd { margin: 0; color: var(--muted); }
.author-list { color: var(--muted); }

.cv-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 16px 18px; margin-bottom: 30px; background: var(--fill); border-radius: 8px; }
.cv-toolbar p { margin: 0; color: var(--muted); font-size: 14px; }
.cv-sheet { width: 100%; padding: 42px; border: 1px solid var(--line); background: var(--bg); }
.cv-name { font-size: 42px; }
.cv-role { margin-top: 8px; color: var(--accent); font-size: 18px; font-weight: 700; }
.cv-contact { margin-top: 16px; color: var(--muted); font-size: 14px; }
.cv-section { padding-top: 26px; margin-top: 26px; border-top: 1px solid var(--line); }
.cv-section h2 { margin-bottom: 14px; font-size: 18px; text-transform: uppercase; letter-spacing: 1px; }
.cv-section p, .cv-section li { color: var(--muted); font-size: 14px; line-height: 1.6; }
.cv-section ul { margin: 0; padding-left: 18px; }
.cv-section li + li { margin-top: 5px; }
.cv-job { margin-top: 18px; }
.cv-job:first-of-type { margin-top: 0; }
.cv-job-head { display: flex; justify-content: space-between; gap: 18px; }
.cv-job h3 { font-size: 16px; }
.cv-job .date { color: var(--accent); font-size: 13px; font-weight: 700; white-space: nowrap; }
.skill-lines { display: grid; gap: 7px; }
.skill-lines strong { color: var(--text); }

.site-footer { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; margin-top: 96px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--light); font-size: 14px; }
.site-footer p { margin: 0; }

@media (max-width: 820px) {
  .site { padding-inline: 22px; }
  .hero h1 { white-space: normal; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero { padding-top: 16px; }
  .evidence-grid, .credential-grid { grid-template-columns: repeat(2, 1fr); }
  .link-grid { grid-template-columns: repeat(2, 1fr); }
  .credential-summary { grid-template-columns: 1fr; }
  .credential-toolbar { grid-template-columns: minmax(0, 1fr) 220px; }
  .credential-toolbar > label:first-child { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .site { padding: 12px 18px 72px; }
  h1 { font-size: 40px; }
  h2 { font-size: 25px; }
  .lead { font-size: 18px; }
  .signal-grid { grid-template-columns: repeat(2, 1fr); margin-bottom: 62px; }
  .signal { min-height: 116px; }
  .signal-value { font-size: 25px; }
  .signal-value--text { font-size: 21px; }
  .section + .section { margin-top: 64px; }
  .section-head { display: block; }
  .section-head--wide-title, .detail-section[aria-labelledby="skill-map-title"] .section-head, .detail-section[aria-labelledby="evidence-title"] .section-head { display: block; }
  .section-head p { margin-top: 10px; }
  .evidence-grid, .credential-grid, .link-grid, .split, .skill-grid, .story-grid { grid-template-columns: 1fr; }
  .story-grid--journey > .story-panel { min-height: 0; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }
  .timeline-item-head { display: block; }
  .timeline--detail .timeline-date { margin-top: 5px; white-space: normal; }
  .metric-row, .issuer-list { grid-template-columns: 1fr; }
  .credential-toolbar { grid-template-columns: 1fr; }
  .credential-toolbar > label:first-child { grid-column: auto; }
  .publication-meta { grid-template-columns: 1fr; gap: 4px; }
  .publication-meta dd { margin-bottom: 12px; }
  .cv-toolbar, .cv-job-head, .site-footer { display: block; }
  .cv-toolbar .button { margin-top: 12px; }
  .cv-sheet { padding: 24px 20px; }
  .cv-name { font-size: 32px; }
  .cv-job .date { display: block; margin-top: 3px; white-space: normal; }
}

@media print {
  :root { --bg: #fff; --text: #000; --muted: #333; --line: #bbb; --accent: #000; }
  body { font-size: 11pt; }
  .sk-nav, .back-link, .cv-toolbar, .site-footer { display: none !important; }
  .site { max-width: none; padding: 0; }
  .detail-header { padding: 0 0 20px; }
  .cv-sheet { max-width: none; padding: 0; border: 0; }
  .cv-section { break-inside: avoid; }
  a { color: inherit; text-decoration: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}