:root {
  --ink: #111827;
  --ink-soft: #394150;
  --muted: #697386;
  --paper: #f7f8fa;
  --surface: rgba(255, 255, 255, 0.78);
  --line: rgba(17, 24, 39, 0.12);
  --line-strong: rgba(17, 24, 39, 0.22);
  --accent: #8b1522;
  --accent-dark: #68101a;
  --accent-soft: #f6e9eb;
  --signal: #216869;
  --max-width: 1180px;
  --radius: 18px;
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 4%, rgba(139, 21, 34, 0.08), transparent 28rem),
    linear-gradient(rgba(17, 24, 39, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 24, 39, 0.025) 1px, transparent 1px),
    var(--paper);
  background-size: auto, 72px 72px, 72px 72px, auto;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background: linear-gradient(180deg, rgba(247, 248, 250, 0.12), var(--paper) 820px);
  content: "";
  pointer-events: none;
}

::selection { background: var(--accent); color: #fff; }

a { color: var(--accent); text-decoration: none; text-underline-offset: 0.2em; }
a:hover { color: var(--accent-dark); text-decoration: underline; }
a:focus-visible { outline: 3px solid rgba(139, 21, 34, 0.26); outline-offset: 4px; border-radius: 3px; }

.page { width: min(var(--max-width), calc(100% - 48px)); margin: 0 auto; }

.site-header {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 34px;
  align-items: center;
  min-height: 88px;
  border-bottom: 1px solid var(--line);
}

.site-title { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); font-size: 0.98rem; font-weight: 750; letter-spacing: -0.02em; }
.site-title:hover { color: var(--ink); text-decoration: none; }
.site-title img { width: 34px; height: 34px; object-fit: contain; filter: saturate(0.82); }

nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px 22px; font-size: 0.82rem; font-weight: 620; letter-spacing: 0.015em; }
nav a { position: relative; padding: 8px 0; color: var(--muted); }
nav a:hover { color: var(--ink); text-decoration: none; }
nav a[aria-current="page"] { color: var(--ink); }
nav a[aria-current="page"]::after { position: absolute; right: 0; bottom: 2px; left: 0; height: 2px; border-radius: 2px; background: var(--accent); content: ""; }

h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif; font-weight: 520; letter-spacing: -0.045em; }
h1 { margin-bottom: 22px; font-size: clamp(3rem, 6.5vw, 5.8rem); line-height: 0.92; }
h2 { margin-bottom: 18px; font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1; }
h3 { margin-bottom: 9px; font-size: 1.1rem; line-height: 1.35; letter-spacing: -0.018em; }
p { max-width: 760px; }

.eyebrow, .section-kicker, .tag { color: var(--accent); font-size: 0.69rem; font-weight: 760; letter-spacing: 0.16em; text-transform: uppercase; }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) 285px; gap: clamp(44px, 8vw, 106px); align-items: center; min-height: 640px; padding: 72px 0 80px; }
.hero-copy { max-width: 770px; animation: rise 700ms ease-out both; }
.intro-copy { color: var(--ink-soft); font-size: 1rem; line-height: 1.72; text-align: justify; text-justify: inter-word; hyphens: auto; }
.intro-copy:first-child { font-size: 1.06rem; }
.intro-copy:first-child strong { color: var(--ink); font-weight: 760; }
.hero-email { display: flex; gap: 13px; align-items: baseline; margin-top: 25px; color: var(--ink-soft); font-size: 0.92rem; }
.hero-email span { color: var(--muted); font-size: 0.84rem; font-weight: 650; letter-spacing: 0; }
.hero-email a { font-weight: 650; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 17px; border: 1px solid var(--line-strong); border-radius: 999px; background: rgba(255,255,255,0.64); color: var(--ink); font-size: 0.86rem; font-weight: 720; line-height: 1.2; transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease; }
.button::after { margin-left: 8px; content: "↗"; font-size: 0.9em; }
.button:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(17,24,39,0.09); }
.button.primary { border-color: var(--ink); background: var(--ink); color: #fff; }
.button.primary:hover { border-color: var(--accent); background: var(--accent); color: #fff; }

.profile-card { position: relative; justify-self: end; width: min(100%, 285px); padding: 9px; border: 1px solid rgba(255,255,255,0.88); border-radius: 24px; background: rgba(255,255,255,0.64); box-shadow: var(--shadow); backdrop-filter: blur(18px); animation: rise 700ms 100ms ease-out both; }
.profile-card::before { position: absolute; z-index: -1; top: -32px; right: -30px; width: 120px; height: 120px; border: 1px solid rgba(139,21,34,0.17); border-radius: 50%; content: ""; }
.profile-card img, .photo-placeholder { display: block; width: 100%; aspect-ratio: 4 / 5; border-radius: 17px; background: #e9ebee; object-fit: cover; object-position: center 22%; filter: saturate(0.78) contrast(1.03); }
.photo-placeholder, .avatar-placeholder { display: grid; place-items: center; color: var(--muted); font-weight: 700; }
.photo-placeholder[hidden] { display: none; }

.recent-events { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: clamp(30px, 4vw, 58px); padding: 58px 0; border-top: 1px solid var(--line); }
.recent-events-heading h2 { max-width: 220px; font-size: clamp(1.55rem, 2.6vw, 2.15rem); line-height: 1.08; letter-spacing: -0.035em; }
.event-card { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 22px; padding: 23px 0 4px; border-top: 1px solid var(--ink); }
.event-date { display: flex; flex-direction: column; align-items: center; padding-top: 3px; color: var(--muted); font-size: 0.66rem; font-weight: 750; letter-spacing: 0.08em; line-height: 1.2; }
.event-date strong { color: var(--accent); font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif; font-size: 1.75rem; font-weight: 520; letter-spacing: -0.04em; }
.event-copy h3 { max-width: 720px; margin-bottom: 6px; font-family: Inter, ui-sans-serif, sans-serif; font-size: 1rem; font-weight: 680; line-height: 1.4; letter-spacing: -0.01em; }
.event-copy .event-type { margin-bottom: 5px; color: var(--signal); font-size: 0.66rem; font-weight: 760; letter-spacing: 0.12em; text-transform: uppercase; }
.event-copy .event-title { margin-bottom: 13px; color: var(--ink-soft); font-family: Inter, ui-sans-serif, sans-serif; font-size: 0.92rem; line-height: 1.5; }
.event-title span { color: var(--muted); font-size: 0.78rem; font-style: normal; font-weight: 700; }
.event-title cite { font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif; font-size: 1.02rem; font-style: italic; }
.event-meta { display: flex; flex-wrap: wrap; gap: 6px 22px; margin: 0; color: var(--muted); font-size: 0.78rem; font-weight: 620; }
.event-meta span + span::before { margin-right: 22px; color: var(--line-strong); content: "|"; }

.section-grid { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: clamp(30px, 4vw, 58px); padding: 72px 0; border-top: 1px solid var(--line); }
.section-grid .section-kicker { margin-bottom: 5px; }
.section-grid > div:first-child h2 { max-width: 220px; font-size: clamp(1.55rem, 2.6vw, 2.15rem); line-height: 1.08; letter-spacing: -0.035em; }
.feature-list { display: grid; border-top: 1px solid var(--ink); }
.feature-item { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 122px; gap: 34px; align-items: center; padding: 27px 0; border-bottom: 1px solid var(--line); transition: padding-left 180ms ease; }
.feature-item:hover { padding-left: 8px; }
.feature-item p { margin-bottom: 8px; color: var(--muted); }
.feature-item .tag { margin-bottom: 9px; color: var(--signal); }
.feature-item h3 { max-width: 650px; padding-right: 24px; font-size: clamp(1.12rem, 2vw, 1.38rem); }
.feature-copy > a { font-size: 0.84rem; font-weight: 700; }
.publication-cover { display: block; width: 122px; aspect-ratio: 0.76; border: 1px solid var(--line); border-radius: 3px; background: #fff; box-shadow: 0 10px 24px rgba(17,24,39,0.11); object-fit: cover; object-position: center top; transition: transform 220ms ease, box-shadow 220ms ease; }
.feature-item:hover .publication-cover { box-shadow: 0 14px 30px rgba(17,24,39,0.15); transform: translateY(-2px) rotate(0.4deg); }

.research-areas { padding: 88px 0 96px; border-top: 1px solid var(--line); }
.research-areas > h2 { max-width: 330px; font-size: clamp(1.55rem, 2.6vw, 2.15rem); line-height: 1.08; letter-spacing: -0.035em; }
.area-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 32px; }
.area-grid article, .member-card, .callout { border: 1px solid var(--line); background: var(--surface); backdrop-filter: blur(12px); }
.area-grid article { min-height: 300px; padding: 0; overflow: hidden; border-radius: var(--radius); transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
.area-grid article:hover { border-color: var(--line-strong); box-shadow: 0 18px 40px rgba(17,24,39,0.06); transform: translateY(-4px); }
.area-grid article > img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; filter: saturate(0.48) contrast(1.04); transition: filter 240ms ease, transform 400ms ease; }
.area-grid article:hover > img { filter: saturate(0.72) contrast(1.04); transform: scale(1.025); }
.area-copy { position: relative; padding: 24px; }
.area-copy::before { display: block; width: 30px; height: 3px; margin-bottom: 22px; border-radius: 2px; background: var(--accent); content: ""; }
.area-grid p, .member-card p, .callout p { color: var(--muted); }

.content-page { max-width: 940px; min-height: calc(100vh - 180px); padding: 84px 0 70px; }
.content-page > h1 { margin-bottom: 48px; font-size: clamp(3.4rem, 7vw, 6.1rem); }
.content-page > h1::after { display: block; width: 42px; height: 4px; margin-top: 28px; border-radius: 2px; background: var(--accent); content: ""; }
.content-page > h2 { margin-top: 58px; font-size: clamp(1.55rem, 3vw, 2.3rem); }
.recruitment-page { max-width: 1040px; }
.recruitment-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 0.75fr); column-gap: clamp(42px, 8vw, 100px); align-items: end; margin-bottom: 58px; }
.recruitment-intro .eyebrow { grid-column: 1 / -1; }
.recruitment-intro h1 { margin: 0; font-size: clamp(1.9rem, 4vw, 3.4rem); line-height: 1; }
.recruitment-intro h1 span { color: var(--muted); font-size: 0.58em; font-weight: 480; letter-spacing: -0.025em; white-space: nowrap; }
.recruitment-list { border-top: 1px solid var(--ink); }
.recruitment-role { display: grid; grid-template-columns: minmax(210px, 0.72fr) minmax(0, 1.6fr); gap: clamp(32px, 7vw, 88px); padding: 42px 0 46px; border-bottom: 1px solid var(--line); }
.role-type { margin-bottom: 8px; color: var(--signal); font-size: 0.72rem; font-weight: 760; letter-spacing: 0.09em; text-transform: uppercase; }
.role-heading h2, .recruitment-contact h2 { margin-bottom: 9px; font-family: Inter, ui-sans-serif, sans-serif; font-size: clamp(1.35rem, 2.5vw, 1.8rem); font-weight: 650; letter-spacing: -0.035em; line-height: 1.15; }
.role-location { margin: 0; color: var(--muted); font-size: 0.88rem; }
.role-copy p { max-width: 680px; margin-bottom: 24px; color: var(--ink-soft); text-align: justify; text-justify: inter-word; hyphens: auto; }
.role-copy p:last-child { margin-bottom: 0; }
.role-copy h3 { margin: 27px 0 7px; color: var(--ink); font-size: 0.78rem; font-weight: 760; letter-spacing: 0.075em; text-transform: uppercase; }
.program-details { margin: 26px 0 30px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,0.52); }
.program-details summary { padding: 15px 18px; color: var(--accent); cursor: pointer; font-size: 0.86rem; font-weight: 720; list-style-position: inside; }
.program-details div { padding: 0 18px 18px; }
.program-details div p { margin: 0 0 14px; font-size: 0.9rem; }
.program-details div p:last-child { margin-bottom: 0; }
.recruitment-contact { display: grid; grid-template-columns: minmax(210px, 0.72fr) minmax(0, 1.6fr); gap: 8px clamp(32px, 7vw, 88px); margin-top: 42px; padding: 30px; border-radius: var(--radius); background: var(--surface); }
.recruitment-contact .role-type { grid-column: 1; }
.recruitment-contact h2 { grid-column: 1; }
.recruitment-contact > p:last-child { grid-column: 2; grid-row: 1 / span 2; margin: 0; color: var(--ink-soft); }
.paper-page, .publication-page { max-width: 1040px; }
.research-page-header { margin-bottom: 54px; }
.research-page-header h1 { margin-bottom: 0; font-size: clamp(2.4rem, 5vw, 4.4rem); }
.research-page-header h1::after { display: block; width: 42px; height: 4px; margin-top: 25px; border-radius: 2px; background: var(--accent); content: ""; }
.research-page-header .meta { margin: 18px 0 0; }
.paper-list { display: grid; gap: 0; border-top: 1px solid var(--ink); }
.paper-item { padding: 36px 0 38px; border-bottom: 1px solid var(--line); transition: padding-left 180ms ease; }
.paper-item:hover { padding-left: 10px; }
.paper-body h2 { max-width: 880px; margin: 0 0 9px; font-family: Inter, ui-sans-serif, sans-serif; font-size: clamp(1.18rem, 2.1vw, 1.48rem); font-weight: 650; line-height: 1.38; letter-spacing: -0.025em; }
.paper-body p { margin-bottom: 8px; color: var(--ink-soft); }
.paper-status { color: var(--signal) !important; font-size: 0.86rem; font-weight: 650; }
.paper-series { margin: 0 0 8px; color: var(--signal) !important; font-size: 0.86rem; font-weight: 650; }
.paper-series a { color: inherit; text-decoration: underline; text-decoration-color: rgba(33,104,105,0.4); }
.paper-series a:hover { color: var(--accent); text-decoration-color: currentColor; }
.paper-actions { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: flex-start; margin-top: 18px; font-size: 0.82rem; font-weight: 700; }
.paper-actions > a::after { margin-left: 6px; content: "↗"; }
.compact-details summary, .abstract-details summary { color: var(--accent); cursor: pointer; list-style: none; }
.compact-details summary::-webkit-details-marker, .abstract-details summary::-webkit-details-marker { display: none; }
.compact-details summary::after, .abstract-details summary::after { display: inline-block; margin-left: 7px; content: "+"; transition: transform 180ms ease; }
.compact-details[open] summary::after, .abstract-details[open] summary::after { transform: rotate(45deg); }
.compact-details p { max-width: 800px; margin: 13px 0 0; padding: 16px 18px; border-left: 2px solid var(--line-strong); background: rgba(255,255,255,0.48); color: var(--muted); font-size: 0.86rem; font-weight: 450; }
.paper-actions .abstract-panel { flex-basis: 100%; }
.paper-actions .abstract-panel p { line-height: 1.72; }
.publication-section { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: clamp(34px, 6vw, 72px); margin-top: 62px; }
.publication-section:first-of-type { margin-top: 0; }
.publication-section-heading { align-self: start; position: sticky; top: 28px; }
.publication-section-heading h2 { margin: 0; font-size: clamp(1.55rem, 2.8vw, 2.15rem); }
.publication-list { border-top: 1px solid var(--ink); }
.publication-item { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 24px; padding: 30px 0 32px; border-bottom: 1px solid var(--line); }
.publication-index { display: flex; flex-direction: column; gap: 2px; padding-top: 3px; color: var(--muted); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.065em; text-transform: uppercase; }
.publication-index span:first-child { color: var(--ink); font-size: 0.8rem; }
.publication-copy h3 { max-width: 720px; margin-bottom: 10px; font-size: clamp(1.08rem, 1.8vw, 1.3rem); line-height: 1.42; }
.publication-copy h3 a { color: var(--ink); }
.publication-copy h3 a:hover { color: var(--accent); }
.publication-copy p { margin-bottom: 6px; }
.publication-copy .publication-authors { color: var(--muted); font-size: 0.9rem; }
.coauthors a, .publication-authors a { color: inherit; text-decoration: underline; text-decoration-color: rgba(139, 21, 34, 0.45); text-decoration-thickness: 1px; }
.coauthors a:hover, .publication-authors a:hover { color: var(--accent); text-decoration-color: currentColor; }
.publication-copy .publication-notes { margin-top: 9px; font-size: 0.88rem; }
.abstract-details { margin-top: 17px; font-size: 0.82rem; font-weight: 720; }
.abstract-copy { max-width: 760px; margin-top: 14px; padding: 20px 22px; border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0; background: rgba(255,255,255,0.62); }
.abstract-copy p { margin: 0 0 10px; color: var(--ink-soft); font-size: 0.92rem; font-weight: 450; line-height: 1.72; }
.abstract-copy p:last-child { margin-bottom: 0; }
.wide-page { max-width: 100%; }
.lab-page { max-width: 980px; }
.lab-page h1 { margin-bottom: 28px; }
.lab-page h2 { font-family: Inter, ui-sans-serif, sans-serif; font-size: 1.3rem; font-weight: 650; letter-spacing: -0.02em; }
.lab-note { margin-top: 38px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.lab-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 30px 22px; }
.lab-member h3 { margin: 13px 0 2px; font-size: 1rem; }
.lab-member p { margin: 0; color: var(--muted); font-size: 0.88rem; }
.lab-member img, .lab-member .avatar-placeholder { width: 108px; aspect-ratio: 1; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,0.62); object-fit: cover; }
.former-list { display: grid; gap: 10px; max-width: 680px; }
.former-list p { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin: 0; padding: 13px 0; border-bottom: 1px solid var(--line); }
.former-list span, .meta, .links, footer p { color: var(--muted); }
.item-list { margin: 0; padding-left: 25px; }
.item-list > li { margin-bottom: 25px; padding-left: 6px; }
.item-list.compact > li { margin-bottom: 17px; }
.item-list li::marker { color: var(--accent); font-weight: 700; }
.publication-title, .publication-venue, .publication-authors, .publication-notes { display: block; }
.publication-title { margin-bottom: 3px; }
.publication-venue em { color: var(--signal); font-weight: 650; }
.publication-authors { color: var(--muted); }
.publication-notes { margin-top: 3px; color: var(--ink-soft); }
.member-section { margin-top: 54px; padding-top: 35px; border-top: 1px solid var(--line); }
.member-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.member-card { display: grid; grid-template-columns: 92px minmax(0,1fr); gap: 17px; padding: 20px; border-radius: var(--radius); }
.member-card img, .avatar-placeholder { width: 92px; aspect-ratio: 1; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,0.6); object-fit: cover; }
.callout { max-width: 820px; padding: 26px; border-left: 3px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; }
.contact-list { display: grid; grid-template-columns: 90px minmax(0,1fr); gap: 9px 20px; max-width: 720px; margin: 30px 0 0; padding-top: 20px; border-top: 1px solid var(--line); }
.contact-list dt { color: var(--muted); font-weight: 700; }
.contact-list dd { margin: 0; }
.zh-copy { font-size: 17px; line-height: 1.9; }
.zh-profile { display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: clamp(42px, 7vw, 82px); align-items: start; }
.zh-profile .profile-card { position: sticky; top: 28px; }
.demos-page { max-width: 1040px; }
.events-page { max-width: 1040px; }
.events-year { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 42px; border-top: 1px solid var(--ink); }
.events-year > h2 { margin: 28px 0 0; font-family: Inter, ui-sans-serif, sans-serif; font-size: 1rem; font-weight: 700; letter-spacing: 0; }
.archive-event { margin: 0; padding: 23px 0 27px; border-top: 0; border-bottom: 1px solid var(--line); }
.demo-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 42px; align-items: center; padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 18px 45px rgba(17,24,39,0.05); }
.demo-card h2 { margin-bottom: 14px; font-size: clamp(1.65rem, 3vw, 2.35rem); }
.demo-card p { margin-bottom: 0; color: var(--ink-soft); }
.demo-card .tag { margin-bottom: 9px; color: var(--signal); }
.demo-card .button { white-space: nowrap; }
.appointment-page { max-width: 100%; }
.booking-intro { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: clamp(44px, 8vw, 100px); align-items: end; padding-bottom: 58px; }
.booking-intro h1 { margin-bottom: 26px; font-size: clamp(3rem, 6vw, 5.4rem); }
.booking-intro h1::after { display: none; }
.booking-intro > div > p:last-child { color: var(--ink-soft); }
.booking-details { display: grid; gap: 0; margin: 0; border-top: 1px solid var(--ink); }
.booking-details div { display: grid; grid-template-columns: 82px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.booking-details dt { color: var(--muted); font-size: 0.72rem; font-weight: 760; letter-spacing: 0.09em; text-transform: uppercase; }
.booking-details dd { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.calendar-panel { padding: 32px; border: 1px solid var(--line); border-radius: 24px; background: rgba(255,255,255,0.72); box-shadow: var(--shadow); }
.calendar-heading { display: flex; justify-content: space-between; gap: 28px; align-items: center; margin-bottom: 24px; }
.calendar-heading .section-kicker { margin-bottom: 5px; }
.calendar-heading h2 { margin: 0; font-size: clamp(1.55rem, 2.6vw, 2.15rem); }
.booking-frame { display: block; width: 100%; height: 720px; border: 0; border-radius: 14px; background: #fff; }
.calendar-fallback { margin: 16px 0 0; color: var(--muted); font-size: 0.82rem; }
footer { margin-top: 48px; padding: 24px 0 46px; border-top: 1px solid var(--line); }
footer p { margin: 0; font-size: 0.8rem; }

@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

@media (max-width: 920px) {
  .site-header, .hero, .section-grid, .recent-events, .area-grid, .member-grid, .booking-intro { grid-template-columns: 1fr; }
  .site-header { gap: 4px; padding: 18px 0 12px; }
  nav { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 3px; scrollbar-width: none; }
  nav::-webkit-scrollbar { display: none; }
  nav a { white-space: nowrap; }
  .hero { gap: 48px; min-height: 0; padding: 64px 0 76px; }
  .profile-card { justify-self: start; width: 260px; }
  .section-grid, .research-areas { padding: 68px 0; }
  .area-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .area-grid article { min-height: 0; }
  .lab-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .zh-profile { grid-template-columns: minmax(0, 1fr) 220px; }
}

@media (max-width: 680px) {
  .page { width: min(100% - 28px, var(--max-width)); }
  .site-title img { width: 30px; height: 30px; }
  .hero { padding-top: 54px; }
  .hero-actions { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
  .button { padding-inline: 13px; }
  .area-grid { grid-template-columns: 1fr; }
  .area-grid article { min-height: 190px; }
  .content-page { padding-top: 56px; }
  .research-page-header { margin-bottom: 40px; }
  .publication-section { grid-template-columns: 1fr; gap: 18px; margin-top: 48px; }
  .publication-section-heading { position: static; }
  .publication-item { grid-template-columns: 58px minmax(0, 1fr); gap: 16px; }
  .recruitment-intro { grid-template-columns: 1fr; gap: 24px; margin-bottom: 42px; }
  .recruitment-intro .eyebrow { grid-column: auto; margin-bottom: -12px; }
  .recruitment-role { grid-template-columns: 1fr; gap: 24px; padding: 32px 0 36px; }
  .recruitment-contact { grid-template-columns: 1fr; }
  .recruitment-contact .role-type, .recruitment-contact h2, .recruitment-contact > p:last-child { grid-column: auto; grid-row: auto; }
  .booking-intro { gap: 28px; padding-bottom: 38px; }
  .calendar-panel { padding: 16px; border-radius: 18px; }
  .calendar-heading { display: grid; }
  .calendar-heading .button { justify-self: start; }
  .booking-frame { height: 680px; }
  .content-page > h1 { margin-bottom: 38px; }
  .paper-item:hover { padding-left: 0; }
  .feature-item { grid-template-columns: minmax(0, 1fr) 88px; gap: 18px; padding-right: 0; }
  .feature-item h3 { padding-right: 0; }
  .publication-cover { width: 88px; }
  .lab-grid { grid-template-columns: 1fr 1fr; }
  .contact-list { grid-template-columns: 1fr; gap: 2px; }
  .zh-profile, .demo-card, .events-year { grid-template-columns: 1fr; }
  .events-year { gap: 0; }
  .zh-profile .profile-card { position: static; }
  .demo-card .button { justify-self: start; }
  .event-meta { display: grid; gap: 2px; }
  .event-meta span + span::before { display: none; }
}

@media (max-width: 420px) {
  .hero-actions { grid-template-columns: 1fr; }
  .profile-card { width: 100%; }
  .lab-grid { grid-template-columns: 1fr; }
}