/* Job-market homepage styles for Hufeng Zhou */
:root {
  --ink: #17212b;
  --muted: #5c6b78;
  --soft: #eef3f5;
  --panel: #ffffff;
  --line: #d9e1e5;
  --accent: #a51c30;
  --accent-2: #006d77;
  --accent-3: #b8860b;
  --dark: #0f1720;
  --dark-2: #17212b;
  --shadow: 0 16px 40px rgba(15, 23, 32, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fbfcfd;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: #7e1424;
}

p {
  margin: 0 0 1rem;
  color: var(--muted);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 1rem;
  color: var(--ink);
  line-height: 1.12;
  font-weight: 760;
  letter-spacing: 0;
}

h1 {
  font-size: 3.7rem;
}

h2 {
  font-size: 2.2rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1rem;
}

ul,
ol {
  margin: 0;
  padding-left: 1.2rem;
}

li {
  margin: 0.4rem 0;
  color: var(--muted);
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 50;
  padding: 0.7rem 1rem;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}

.skip-link:focus {
  left: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(217, 225, 229, 0.82);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--ink);
  font-weight: 780;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--dark);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 820;
}

.brand-text span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 620;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 1.25rem;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-list > li {
  position: relative;
  margin: 0;
}

.nav-link,
.nav-parent {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 0.8rem;
  border-radius: 8px;
  color: var(--ink);
  font-weight: 700;
  font-size: 0.92rem;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: default;
}

.nav-link:hover,
.nav-link.active,
.nav-parent:hover {
  background: var(--soft);
  color: var(--ink);
}

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 280px;
  padding: 0.55rem;
  margin: 0;
  list-style: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.nav-list li:hover > .dropdown,
.nav-list li:focus-within > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: 0.58rem 0.72rem;
  border-radius: 8px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 640;
}

.dropdown a:hover,
.dropdown a.active {
  background: var(--soft);
}

.dropdown .subhead {
  padding: 0.7rem 0.72rem 0.25rem;
  color: var(--accent-2);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero {
  position: relative;
  min-height: 680px;
  display: grid;
  align-items: center;
  isolation: isolate;
  overflow: hidden;
  background-image: var(--hero-image);
  background-position: center top;
  background-size: cover;
  color: #fff;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(10, 16, 23, 0.58);
}

.hero-content {
  padding: 7rem 0 5rem;
}

.hero h1,
.hero p {
  color: #fff;
}

.hero .kicker {
  color: #f0c66b;
}

.hero-copy {
  max-width: 720px;
}

.kicker {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 820;
  text-transform: uppercase;
}

.lede {
  max-width: 760px;
  font-size: 1.22rem;
  line-height: 1.6;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.7rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1rem;
  border: 1px solid var(--ink);
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-weight: 760;
}

.button:hover {
  background: #000;
  color: #fff;
}

.button.secondary {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
}

.button.secondary:hover {
  background: var(--soft);
  color: var(--ink);
}

.button.outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.button.outline:hover {
  border-color: var(--ink);
}

.hero .button.outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.48);
}

.hero .button.outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 0.75rem;
  max-width: 800px;
  margin: 2.2rem 0 0;
  padding: 0;
}

.hero-metrics div {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.08);
}

.hero-metrics dt {
  color: #fff;
  font-size: 1.55rem;
  font-weight: 820;
}

.hero-metrics dd {
  margin: 0.15rem 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.86rem;
}

.section {
  padding: 5rem 0;
}

.section.tight {
  padding: 3.5rem 0;
}

.section.alt {
  background: #f4f7f8;
}

.section.dark {
  background: var(--dark);
  color: #fff;
}

.section.dark h2,
.section.dark h3,
.section.dark p,
.section.dark li {
  color: #fff;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-heading.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading p {
  font-size: 1.05rem;
}

.eyebrow-line {
  width: 54px;
  height: 4px;
  margin-bottom: 1rem;
  border-radius: 8px;
  background: var(--accent);
}

.grid {
  display: grid;
  gap: 1.15rem;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 1.35rem;
  box-shadow: 0 2px 0 rgba(15, 23, 32, 0.02);
}

.card h3 {
  margin-bottom: 0.55rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.card-link {
  display: inline-flex;
  align-items: center;
  margin-top: 0.8rem;
  font-weight: 760;
}

.profile-strip {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2rem;
  align-items: center;
}

.portrait {
  aspect-ratio: 4 / 5;
  border-radius: 8px;
  object-fit: cover;
  object-position: center top;
  box-shadow: var(--shadow);
}

.topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 0.72rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 700;
}

.feature {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 2.5rem;
  align-items: center;
}

.feature.reverse {
  grid-template-columns: 1.05fr 0.95fr;
}

.media-frame {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.media-frame img {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: contain;
  padding: 1rem;
  background: #fff;
}

.media-frame.photo img {
  aspect-ratio: 1 / 1.05;
  max-height: none;
  object-fit: cover;
  object-position: center top;
  padding: 0;
}

.project-card {
  display: grid;
  grid-template-rows: 180px 1fr;
  overflow: hidden;
  padding: 0;
}

.project-card .thumb {
  background: #f7fafb;
  border-bottom: 1px solid var(--line);
}

.project-card img {
  width: 100%;
  height: 180px;
  object-fit: contain;
  padding: 1rem;
}

.project-card .body {
  padding: 1.25rem;
}

.publication-list {
  display: grid;
  gap: 0.9rem;
}

.publication {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 1rem;
}

.pub-year {
  color: var(--accent);
  font-weight: 820;
}

.publication h3 {
  margin-bottom: 0.35rem;
  font-size: 1.05rem;
}

.publication .authors,
.publication .venue {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 0.35rem;
}

.publication .links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.5rem;
}

.publication .links a {
  font-size: 0.84rem;
  font-weight: 760;
}

.pub-highlight {
  border-left: 4px solid var(--accent);
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.timeline-item:last-child {
  border-bottom: 0;
}

.timeline-date {
  color: var(--accent-2);
  font-weight: 820;
}

.callout {
  border-left: 4px solid var(--accent-2);
  background: #eef7f8;
  border-radius: 8px;
  padding: 1.2rem 1.3rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.contact-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 1.25rem;
}

.contact-card strong {
  display: block;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

.site-footer {
  background: var(--dark);
  color: #fff;
  padding: 3rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
}

.site-footer p,
.site-footer a {
  color: rgba(255, 255, 255, 0.78);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.footer-links a {
  font-weight: 720;
}

.page-hero {
  padding: 5.5rem 0 3.8rem;
  background: var(--dark);
  color: #fff;
}

.page-hero h1,
.page-hero p {
  color: #fff;
}

.page-hero p {
  max-width: 820px;
  font-size: 1.1rem;
}

.source-note {
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  h1 {
    font-size: 2.8rem;
  }

  h2 {
    font-size: 1.9rem;
  }

  .nav {
    min-height: 68px;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-list {
    position: fixed;
    inset: 68px 0 auto 0;
    display: none;
    max-height: calc(100vh - 68px);
    overflow: auto;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 20px 2rem;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }

  .nav-list.open {
    display: flex;
  }

  .nav-link,
  .nav-parent {
    width: 100%;
    justify-content: flex-start;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    padding: 0 0 0.45rem 0.5rem;
    min-width: 0;
  }

  .hero {
    min-height: 620px;
  }

  .hero-content {
    padding: 5rem 0 4rem;
  }

  .hero-metrics,
  .grid.three,
  .grid.four,
  .profile-strip,
  .feature,
  .feature.reverse,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid.two {
    grid-template-columns: 1fr;
  }

  .project-card {
    grid-template-rows: 160px 1fr;
  }

  .project-card img {
    height: 160px;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  h1 {
    font-size: 2.3rem;
  }

  .hero {
    min-height: 680px;
    background-position: 62% top;
  }

  .hero-metrics {
    grid-template-columns: 1fr 1fr;
  }

  .publication,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3.8rem 0;
  }
}