:root {
  --bg: #07050a;
  --bg-elevated: #100b18;
  --surface: rgba(24, 16, 34, 0.76);
  --surface-solid: #140d1e;
  --text: #f7f2ff;
  --text-soft: #c4b5d0;
  --line: rgba(213, 190, 255, 0.17);
  --line-strong: rgba(190, 148, 255, 0.38);
  --accent: #c5a3ff;
  --accent-2: #9fafff;
  --accent-3: #e8b8ff;
  --heading: #fbf8ff;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.25);
  --radius: 24px;
  --header-bg: rgba(7, 5, 10, 0.78);
  --selection: rgba(197, 163, 255, 0.30);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f8f5fc;
  --bg-elevated: #efe9f7;
  --surface: rgba(255, 255, 255, 0.76);
  --surface-solid: #ffffff;
  --text: #281d33;
  --text-soft: #6b5d76;
  --line: rgba(94, 68, 122, 0.14);
  --line-strong: rgba(124, 78, 181, 0.30);
  --accent: #7650ad;
  --accent-2: #5269c7;
  --accent-3: #a84b9d;
  --heading: #1f1528;
  --shadow: 0 26px 80px rgba(71, 48, 96, 0.13);
  --header-bg: rgba(248, 245, 252, 0.82);
  --selection: rgba(118, 80, 173, 0.20);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  transition: background-color .35s ease, color .35s ease;
}
body.nav-open { overflow: hidden; }
::selection { background: var(--selection); }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 200; top: 12px; left: 12px; padding: 10px 14px; transform: translateY(-150%); background: var(--accent); color: #160d21; border-radius: 8px; }
.skip-link:focus { transform: translateY(0); }
.page-glow { position: fixed; z-index: -3; width: 560px; height: 560px; left: var(--pointer-x, 70%); top: var(--pointer-y, 20%); transform: translate(-50%, -50%); border-radius: 50%; pointer-events: none; background: radial-gradient(circle, rgba(159, 107, 220, .11), transparent 67%); transition: opacity .3s; }
.grain { position: fixed; z-index: 90; inset: 0; pointer-events: none; opacity: .022; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E"); }

.site-header { position: fixed; z-index: 100; top: 0; left: 0; right: 0; border-bottom: 1px solid transparent; transition: .25s ease; }
.site-header.scrolled { border-color: var(--line); background: var(--header-bg); backdrop-filter: blur(20px) saturate(150%); }
.nav { height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 680; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 60px; height: 34px; border: 1px solid var(--line-strong); border-radius: 10px; color: var(--accent); font: 750 10px/1 ui-monospace, monospace; letter-spacing: .08em; background: linear-gradient(145deg, rgba(197,163,255,.12), transparent); }
.brand-name { font-size: 15px; }
.nav-links { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.nav-links a { position: relative; color: var(--text-soft); font-size: 14px; transition: color .2s ease; }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 1px; background: var(--accent); transition: right .25s ease; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { right: 0; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.language-toggle { height: 38px; padding: 0 13px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--text); font-size: 12px; font-weight: 680; cursor: pointer; transition: border-color .2s, background .2s; }
.language-toggle:hover { border-color: var(--line-strong); background: rgba(197,163,255,.10); }
.theme-toggle { width: 38px; height: 38px; position: relative; display: grid; place-items: center; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); cursor: pointer; }
.theme-toggle span { position: absolute; transition: transform .3s ease, opacity .3s ease; }
.theme-toggle .sun { opacity: 0; transform: rotate(-90deg) scale(.5); }
[data-theme="light"] .theme-toggle .sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle .moon { opacity: 0; transform: rotate(90deg) scale(.5); }
.nav-cv { display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 15px; border-radius: 12px; background: var(--text); color: var(--bg); font-size: 13px; font-weight: 750; }
.nav-cv span { transition: transform .2s ease; }
.nav-cv:hover span { transform: translate(2px, -2px); }
.nav-toggle { display: none; width: 40px; height: 40px; border: 0; background: transparent; cursor: pointer; }
.nav-toggle span { display: block; width: 21px; height: 1px; margin: 6px auto; background: var(--text); transition: .25s; }

.hero { min-height: 100svh; position: relative; display: grid; grid-template-columns: 1.14fr .86fr; align-content: center; gap: 72px; padding-top: 132px; padding-bottom: 104px; }
.hero::before { content: ""; position: absolute; z-index: -3; inset: 10% -10% 0 18%; background: radial-gradient(circle at 55% 38%, rgba(158, 102, 220, .20), transparent 37%), radial-gradient(circle at 82% 55%, rgba(100, 112, 224, .13), transparent 33%); filter: blur(18px); }
.eyebrow { margin: 0 0 17px; color: var(--accent); font: 700 12px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .14em; text-transform: uppercase; }
.hero h1, .section-heading h2, .contact h2, .profile-main > h2 { margin: 0; color: var(--heading); font-family: Georgia, "Times New Roman", serif; font-weight: 500; letter-spacing: -.045em; }
.hero h1 { max-width: 760px; font-size: clamp(54px, 6.4vw, 94px); line-height: .98; }
[data-language="zh"] .hero h1 { font-size: clamp(50px, 5.4vw, 74px); line-height: 1.05; }
.gradient-text { display: block; padding-bottom: .08em; background: linear-gradient(105deg, var(--accent) 5%, #b8c2ff 52%, var(--accent-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lede { max-width: 710px; margin: 30px 0 0; color: var(--text-soft); font-size: clamp(16px, 1.7vw, 19px); line-height: 1.75; }
.hero-lede strong { color: var(--text); font-weight: 650; }
.mentor-link { color: var(--text); border-bottom: 1px solid var(--line-strong); transition: color .2s, border-color .2s; }
.mentor-link:hover { color: var(--accent); border-color: var(--accent); }
.hero-actions { position: relative; z-index: 5; display: flex; flex-wrap: wrap; gap: 12px; margin-top: 35px; }
.hero-copy { position: relative; z-index: 2; min-width: 0; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 50px; padding: 0 20px; border-radius: 14px; font-size: 14px; font-weight: 720; transition: border-color .25s, background .25s, transform .25s; }
.button span { font-size: 16px; }
.button-primary { background: var(--accent); color: #160d21; box-shadow: 0 12px 40px rgba(175, 124, 255, .25); }
.button-primary:hover { transform: translateY(-2px); background: #d5bcff; }
.button-ghost { border: 1px solid var(--line); background: var(--surface); backdrop-filter: blur(10px); }
.button-ghost:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.contact-menu { position: relative; z-index: 40; }
.contact-menu-trigger { cursor: pointer; }
.contact-popover { position: absolute; z-index: 45; top: calc(100% + 10px); left: 0; width: 224px; padding: 8px; border: 1px solid var(--line-strong); border-radius: 16px; background: rgba(18,12,27,.96); box-shadow: 0 24px 70px rgba(0,0,0,.36); backdrop-filter: blur(22px) saturate(145%); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-8px) scale(.98); transform-origin: top left; transition: opacity .2s ease, visibility .2s ease, transform .2s ease; }
.contact-popover::before { content: ""; position: absolute; left: 0; right: 0; top: -12px; height: 12px; }
[data-theme="light"] .contact-popover { background: rgba(252,249,255,.97); box-shadow: 0 24px 70px rgba(71,48,96,.17); }
.contact-menu:hover .contact-popover, .contact-menu:focus-within .contact-popover, .contact-menu.is-open .contact-popover { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0) scale(1); }
.contact-option { width: 100%; min-height: 44px; display: grid; grid-template-columns: 28px 1fr auto; align-items: center; gap: 9px; padding: 0 10px; border: 0; border-radius: 11px; background: transparent; color: var(--text); text-align: left; font-size: 13px; cursor: pointer; transition: background .18s ease, color .18s ease; }
.contact-option:hover, .contact-option:focus-visible { outline: 0; background: rgba(197,163,255,.13); color: var(--heading); }
.contact-option > span:last-child { color: var(--accent); }
.contact-option-icon { width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; color: var(--accent); font: 700 11px/1 ui-monospace, monospace; }
.contact-wechat-option { position: relative; }
.contact-qr-preview { position: absolute; z-index: 48; bottom: 0; left: calc(100% + 14px); width: 220px; padding: 10px; border: 1px solid var(--line-strong); border-radius: 18px; background: #fff; box-shadow: 0 24px 70px rgba(0,0,0,.32); opacity: 0; visibility: hidden; pointer-events: none; transform: translate(8px,0) scale(.97); transform-origin: left bottom; transition: opacity .2s ease, visibility .2s ease, transform .2s ease; }
.contact-qr-preview::before { content: ""; position: absolute; top: 0; bottom: 0; left: -15px; width: 15px; }
.contact-qr-preview img { width: 100%; height: auto; display: block; border-radius: 11px; }
.contact-wechat-option:hover .contact-qr-preview, .contact-wechat-option:focus-within .contact-qr-preview, .contact-wechat-option.qr-open .contact-qr-preview { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(0,0) scale(1); }
.hero-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; max-width: 710px; margin-top: 32px; color: var(--text-soft); font: 500 10px/1.35 ui-monospace, monospace; }
.live-item { min-width: 0; display: flex; align-items: center; gap: 8px; padding: 10px 11px; border: 1px solid var(--line); border-radius: 10px; background: rgba(20,14,30,.44); backdrop-filter: blur(10px); }
[data-theme="light"] .live-item { background: rgba(255,255,255,.48); }
.live-label { flex: none; color: var(--text-soft); }
.live-item strong { min-width: 0; overflow: hidden; color: var(--text); font-weight: 620; text-overflow: ellipsis; white-space: nowrap; }
.pulse-dot { display: inline-block; width: 7px; height: 7px; margin-right: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 rgba(197, 163, 255, .48); animation: pulse 2.4s infinite; }

.hero-profile { position: relative; z-index: 1; align-self: center; justify-self: end; width: min(500px, 40vw); display: grid; grid-template-columns: minmax(170px,.82fr) minmax(210px,1.18fr); align-items: center; gap: 27px; isolation: isolate; }
.hero-profile::before { content: ""; position: absolute; z-index: -1; inset: -14% -13% -14% 7%; border-radius: 50%; background: radial-gradient(circle, rgba(197,163,255,.18), transparent 68%); filter: blur(12px); }
.hero-headshot { overflow: hidden; aspect-ratio: 4 / 5; border: 1px solid rgba(255,255,255,.46); border-radius: 22px; background: #fff; box-shadow: 0 24px 65px rgba(0,0,0,.28), 0 0 0 9px rgba(197,163,255,.055); }
.hero-headshot img { width: 100%; height: 100%; display: block; object-fit: cover; }
.hero-directions { min-width: 0; display: grid; }
.hero-direction { min-height: 66px; display: grid; grid-template-columns: 30px minmax(0,1fr); align-items: center; gap: 11px; border-top: 1px solid var(--line); }
.hero-direction:last-child { border-bottom: 1px solid var(--line); }
.hero-direction span { color: var(--accent); font: 700 9px/1 ui-monospace, monospace; letter-spacing: .08em; }
.hero-direction strong { color: var(--heading); font-size: clamp(14px,1.35vw,18px); font-weight: 620; line-height: 1.35; letter-spacing: -.015em; }
[data-theme="light"] .hero-headshot { border-color: rgba(118,80,173,.18); box-shadow: 0 24px 65px rgba(71,48,96,.18), 0 0 0 9px rgba(118,80,173,.045); }

.news-section { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 46px; padding-block: 48px 58px; border-top: 1px solid var(--line); }
.news-heading { padding-top: 19px; }
.news-heading .eyebrow { margin-bottom: 8px; }
.news-heading > p:last-child { margin: 0; color: var(--text-soft); font-size: 12px; }
.news-list { border-top: 1px solid var(--line); }
.news-row { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 24px; align-items: baseline; min-height: 58px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.news-row time { color: var(--accent); font: 700 10px/1.4 ui-monospace, monospace; letter-spacing: .06em; text-transform: uppercase; }
.news-row p { margin: 0; color: var(--text); font-size: 14px; }
.news-row .mentor-link { color: var(--accent); border-bottom-color: var(--accent); font-weight: 700; }
.news-row .mentor-link::after { content: ' ↗'; font-size: .78em; }
.news-toggle { width: 100%; min-height: 50px; display: flex; align-items: center; justify-content: center; gap: 10px; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--text-soft); font: 700 10px/1 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; cursor: pointer; transition: color .2s, background .2s; }
.news-toggle:hover { color: var(--accent); background: color-mix(in srgb, var(--accent) 5%, transparent); }
.news-toggle-arrow { display: inline-block; color: var(--accent); font-size: 16px; transition: transform .25s ease; }
.news-toggle[aria-expanded="true"] .news-toggle-arrow { transform: rotate(180deg); }
.news-toggle[hidden], .news-row[hidden] { display: none; }

.section { padding-block: 126px; }
.section-tinted { position: relative; background: var(--bg-elevated); border-block: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: 1.4fr .6fr; align-items: end; gap: 64px; margin-bottom: 54px; }
.section-heading h2, .profile-main > h2 { max-width: 820px; font-size: clamp(38px, 5vw, 68px); line-height: 1.04; }
.section-heading > p { margin: 0 0 5px; color: var(--text-soft); font-size: 14px; }
.filter-bar { display: flex; gap: 9px; margin-bottom: 22px; overflow-x: auto; scrollbar-width: none; }
.filter { flex: none; padding: 9px 13px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--text-soft); font-size: 12px; cursor: pointer; transition: .2s; }
.filter span { margin-left: 6px; opacity: .55; }
.filter:hover, .filter.active { border-color: var(--line-strong); background: rgba(197, 163, 255, .10); color: var(--text); }
.publication-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.pub-card { min-height: 330px; display: grid; grid-template-columns: minmax(360px, .98fr) minmax(0, 1.02fr); position: relative; padding: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, var(--surface), rgba(29,19,42,.24)); box-shadow: 0 0 0 rgba(0,0,0,0); transform-style: preserve-3d; transition: opacity .28s, transform .28s, border-color .25s, box-shadow .25s; }
[data-theme="light"] .pub-card { background: linear-gradient(145deg, rgba(255,255,255,.90), rgba(245,239,252,.68)); }
.pub-card:hover { border-color: var(--line-strong); box-shadow: var(--shadow); }
.pub-card.hidden { display: none; }
.pub-card.featured { min-height: 330px; background: linear-gradient(120deg, rgba(39,24,55,.96), rgba(24,22,52,.76)); }
[data-theme="light"] .pub-card.featured { background: linear-gradient(120deg, rgba(239,226,252,.96), rgba(231,235,253,.84)); }
.pub-visual { position: relative; min-width: 0; overflow: hidden; border-right: 1px solid var(--line); }
.publication-figure { display: block; min-height: 330px; background: #f8fbfd; }
.publication-figure::after { content: "OPEN PAPER  ↗"; position: absolute; right: 14px; bottom: 13px; z-index: 2; padding: 7px 9px; border: 1px solid rgba(16,42,67,.14); border-radius: 999px; color: #102a43; background: rgba(255,255,255,.88); box-shadow: 0 8px 24px rgba(16,42,67,.1); font: 800 8px/1 ui-monospace, monospace; letter-spacing: .08em; opacity: 0; transform: translateY(4px); transition: opacity .25s, transform .25s; }
.publication-figure:hover::after { opacity: 1; transform: translateY(0); }
.publication-figure img, .publication-animation { width: 100%; height: 100%; min-height: 330px; display: block; object-fit: contain; object-position: center; background: #fff; transition: transform .45s cubic-bezier(.2,.8,.2,1), filter .3s; }
.publication-poster { position: absolute; z-index: 1; inset: 0; display: block !important; opacity: 1; pointer-events: none; transition: opacity .42s ease; }
.publication-figure.is-animating .publication-poster { opacity: 0; }
.publication-figure.video-unavailable .publication-animation { display: none; }
.publication-figure.video-unavailable .publication-poster { display: block !important; }
.publication-figure:hover img, .publication-figure:hover .publication-animation { transform: scale(1.012); filter: saturate(1.035) contrast(1.01); }
.pub-info { min-width: 0; display: flex; flex-direction: column; padding: 29px 31px; }
.pub-topline { display: flex; justify-content: space-between; gap: 20px; color: var(--accent); font: 650 10px/1.4 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.pub-topline .index { color: var(--text-soft); opacity: .45; }
.pub-card h3 { position: relative; max-width: 760px; margin: 19px 0 14px; color: var(--heading); font: 500 clamp(22px, 2.5vw, 31px)/1.18 Georgia, serif; letter-spacing: -.025em; }
.pub-card p { position: relative; max-width: 720px; margin: 0; color: var(--text-soft); font-size: 14px; }
.review-note { position: relative; display: flex; align-items: center; gap: 8px; margin-top: 18px; color: var(--text-soft); font-size: 12px; }
.review-note > span { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-3); }
.review-note strong { color: var(--text); }
.pub-footer { position: relative; display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-top: auto; padding-top: 25px; border-top: 1px solid var(--line); color: var(--text-soft); font-size: 12px; }
.pub-footer b { color: var(--text); font-weight: 650; }
.pub-footer a { color: var(--accent); font: 700 11px/1 ui-monospace, monospace; white-space: nowrap; }
.pub-footer a:hover { text-decoration: underline; text-underline-offset: 4px; }
.pub-links { display: inline-flex; align-items: center; gap: 14px; }
.corresponding { margin: 14px 4px 0; color: var(--text-soft); font-size: 11px; }
.research-section { padding-bottom: 38px; }
.projects-section { padding-top: 42px; border-top: 1px solid var(--line); }

.timeline { position: relative; }
.timeline::before { content: ""; position: absolute; left: 30px; top: 18px; bottom: 18px; width: 1px; background: linear-gradient(var(--accent), var(--line)); }
.timeline-item { display: grid; grid-template-columns: 62px 160px 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.timeline-item:last-child { border-bottom: 0; }
.timeline-marker { position: relative; z-index: 1; width: 61px; display: flex; justify-content: center; }
.timeline-marker span { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--line-strong); border-radius: 50%; background: var(--bg-elevated); color: var(--accent); font: 650 10px/1 ui-monospace, monospace; }
.timeline-date { padding-top: 9px; color: var(--text-soft); font: 600 11px/1.4 ui-monospace, monospace; }
.timeline-title { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.timeline-title h3 { margin: 0; color: var(--heading); font: 500 clamp(21px, 2.4vw, 30px)/1.25 Georgia, serif; }
.timeline-title a { flex: none; color: var(--accent); font: 650 10px/1 ui-monospace, monospace; }
.institution { margin: 8px 0 11px !important; color: var(--accent) !important; font: 600 11px/1.4 ui-monospace, monospace !important; }
.timeline-content > p { max-width: 780px; margin: 0; color: var(--text-soft); font-size: 14px; }
.badge { flex: none; padding: 6px 9px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--accent); font: 650 9px/1 ui-monospace, monospace; }

.compact-heading { display: block; margin-bottom: 24px; }
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.project-card { min-height: 410px; position: relative; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); transition: transform .35s cubic-bezier(.2,.8,.2,1), border-color .3s, box-shadow .3s; }
.project-card:hover { transform: translateY(-7px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.project-number { position: relative; z-index: 2; color: var(--text-soft); font: 650 10px/1 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.project-body { position: relative; z-index: 2; max-width: 430px; }
.project-body h3 { margin: 0 0 12px; color: var(--heading); font: 500 clamp(29px, 3.2vw, 43px)/1 Georgia, serif; letter-spacing: -.04em; }
.project-body p { margin: 0 0 24px; color: var(--text-soft); font-size: 14px; }
.project-body span { color: var(--accent); font: 700 11px/1 ui-monospace, monospace; }
.project-locsource { background: radial-gradient(circle at 70% 25%, rgba(192,151,255,.22), transparent 35%), linear-gradient(145deg, var(--surface), rgba(49,31,66,.52)); }
.project-boolean { background: radial-gradient(circle at 72% 20%, rgba(137,151,246,.20), transparent 35%), linear-gradient(145deg, var(--surface), rgba(31,29,68,.58)); }
.project-memory { background: radial-gradient(circle at 72% 20%, rgba(225,164,238,.18), transparent 35%), linear-gradient(145deg, var(--surface), rgba(57,34,62,.56)); }
.project-orbit { position: absolute; width: 310px; height: 310px; right: -30px; top: -55px; border: 1px solid var(--line-strong); border-radius: 50%; animation: spin 34s linear infinite; }
.project-orbit::before, .project-orbit::after, .project-orbit span { content: ""; position: absolute; border: 1px solid var(--line); border-radius: 50%; }
.project-orbit::before { inset: 17%; }
.project-orbit::after { inset: 36%; background: rgba(197,163,255,.08); }
.project-orbit span:nth-child(1) { width: 13px; height: 13px; left: 12%; top: 17%; background: var(--accent); box-shadow: 0 0 25px var(--accent); }
.project-orbit span:nth-child(2) { width: 8px; height: 8px; right: 8%; top: 48%; background: var(--accent-2); }
.project-orbit span:nth-child(3) { width: 6px; height: 6px; left: 40%; bottom: -3px; background: var(--accent-3); }
.boolean-grid { position: absolute; width: 320px; height: 250px; right: -30px; top: -25px; opacity: .7; transform: perspective(500px) rotateX(58deg) rotateZ(-16deg); background-image: linear-gradient(var(--line-strong) 1px, transparent 1px), linear-gradient(90deg, var(--line-strong) 1px, transparent 1px); background-size: 32px 32px; mask-image: radial-gradient(circle at center, black, transparent 72%); animation: grid-drift 10s ease-in-out infinite alternate; }
.memory-map { position: absolute; width: 260px; height: 210px; right: -5px; top: 8px; opacity: .8; }
.memory-map span { position: absolute; z-index: 2; width: 19px; height: 19px; border: 1px solid var(--line-strong); border-radius: 50%; background: var(--surface-solid); box-shadow: 0 0 22px rgba(241,194,120,.13); }
.memory-map span:nth-child(1) { left: 18px; top: 74px; }
.memory-map span:nth-child(2) { left: 105px; top: 20px; background: rgba(197,163,255,.28); }
.memory-map span:nth-child(3) { right: 27px; top: 84px; background: rgba(159,175,255,.25); }
.memory-map span:nth-child(4) { left: 106px; bottom: 17px; background: rgba(232,184,255,.25); }
.memory-map i { position: absolute; z-index: 1; left: 31px; top: 86px; width: 176px; height: 1px; transform-origin: left center; background: linear-gradient(90deg, var(--line-strong), rgba(232,184,255,.28)); }
.memory-map i:nth-of-type(1) { transform: rotate(-31deg); }
.memory-map i:nth-of-type(2) { transform: rotate(1deg); }
.memory-map i:nth-of-type(3) { transform: rotate(32deg); }

.profile-section { padding-block: 126px; border-top: 1px solid var(--line); background: linear-gradient(180deg, transparent, rgba(117,76,157,.09)); }
.profile-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 72px; align-items: start; }
.profile-single { grid-template-columns: minmax(0, 860px); justify-content: center; }
.profile-single .profile-main { width: 100%; }
.education-card { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-top: 42px; padding: 24px 0; border-block: 1px solid var(--line); }
.education-year { color: var(--accent); font: 650 10px/1 ui-monospace, monospace; }
.education-card h3 { margin: 10px 0 5px; color: var(--heading); font: 500 28px/1.1 Georgia, serif; }
.education-card p { margin: 0; color: var(--text-soft); font-size: 13px; }
.honors { margin-top: 12px; }
.honors > div { display: grid; grid-template-columns: 58px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.honors span { padding-top: 3px; color: var(--accent); font: 650 10px/1 ui-monospace, monospace; }
.honors p { margin: 0; color: var(--text-soft); font-size: 13px; }
.honors b { color: var(--text); font-weight: 650; }
.skill-panel { position: sticky; top: 108px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.skill-panel h3 { margin: 0 0 28px; color: var(--heading); font: 500 35px/1 Georgia, serif; }
.skill-group { padding: 16px 0; border-top: 1px solid var(--line); }
.skill-group span { color: var(--accent); font: 650 9px/1 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .09em; }
.skill-group p { margin: 7px 0 0; color: var(--text-soft); font-size: 13px; }
.cv-links { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 18px; }
.cv-links a { display: flex; justify-content: space-between; padding: 12px 13px; border: 1px solid var(--line); border-radius: 11px; font-size: 12px; transition: .2s; }
.cv-links a:hover { border-color: var(--line-strong); background: rgba(197,163,255,.09); }

.hobbies-section { padding-block: 105px; border-top: 1px solid var(--line); }
.hobbies-section .section-heading h2 { max-width: 760px; font-size: clamp(34px, 4.3vw, 58px); }
.hobby-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.hobby-card { min-height: 155px; display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; padding: 23px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(145deg, var(--surface), rgba(197,163,255,.045)); transition: transform .25s, border-color .25s, background .25s; }
.hobby-card:hover { transform: none; border-color: var(--line); }
.hobby-card > span { align-self: flex-start; color: var(--accent); font: 700 9px/1 ui-monospace, monospace; letter-spacing: .08em; }
.hobby-card > div { min-width: 0; display: flex; flex-direction: column; align-items: flex-end; }
.hobby-card h3 { margin: 0; color: var(--heading); font: 500 clamp(22px, 2.2vw, 30px)/1 Georgia, serif; }
.hobby-card p { order: -1; margin: 0 0 10px; color: var(--text-soft); font-size: 11px; line-height: 1.35; text-align: right; }

/* Image-led project cards */
.project-card { min-height: 420px; isolation: isolate; background: var(--surface); border-color: var(--line); box-shadow: none; }
.project-card::after { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, rgba(20,13,30,.03) 18%, rgba(20,13,30,.70) 57%, rgba(20,13,30,.99) 84%); pointer-events: none; }
.project-art { position: absolute; inset: 0; z-index: 0; background-repeat: no-repeat; opacity: .82; filter: saturate(.72) contrast(.96) brightness(.68); transition: transform .65s cubic-bezier(.2,.8,.2,1), filter .35s, opacity .35s; }
.project-card:hover .project-art { transform: scale(1.025); filter: saturate(.82) contrast(1.01) brightness(.74); opacity: .9; }
.project-art-memory, .project-art-boolean { background-image: url("assets/site/project-diptych.webp"); background-size: 200% 100%; }
.project-art-memory { background-position: left center; }
.project-art-boolean { background-position: right center; }
.project-art-locsource { background-image: url("assets/site/locsource-spatial.webp"); background-size: auto 136%; background-position: center 63%; }
.project-card .project-number { color: var(--accent); }
.project-card .project-body h3 { color: var(--heading); }
.project-card .project-body p { color: var(--text-soft); }
.project-card .project-body span { color: var(--accent); }
[data-theme="light"] .project-card::after { background: linear-gradient(180deg, rgba(248,245,252,.02) 18%, rgba(248,245,252,.78) 58%, rgba(248,245,252,.99) 84%); }
[data-theme="light"] .project-art { opacity: .78; filter: saturate(.58) contrast(.94) brightness(.98); }
[data-theme="light"] .project-card:hover .project-art { opacity: .88; filter: saturate(.72) contrast(.98) brightness(1); }

/* Education and honors */
.profile-group + .profile-group { margin-top: 92px; }
.profile-group-heading { margin-bottom: 24px; }
.profile-group-heading .eyebrow { margin-bottom: 10px; }
.profile-group-heading h2 { margin: 0; color: var(--heading); font: 500 clamp(38px, 5vw, 62px)/1.04 Georgia, "Times New Roman", serif; letter-spacing: -.04em; }
.profile-rows { border-top: 1px solid var(--line); }
.profile-row { min-height: 142px; display: grid; grid-template-columns: 150px 150px minmax(0, 1fr); align-items: center; gap: 24px; padding: 22px 10px; border-bottom: 1px solid var(--line); }
.profile-row-logo { width: 118px; height: 98px; display: flex; align-items: center; justify-content: center; background: transparent; }
.profile-row-logo img { display: block; max-width: 100%; max-height: 100%; object-fit: contain; }
.profile-group-education .profile-row-logo img { width: 98px; height: 98px; }
.profile-row-year, .profile-row-type { color: var(--accent); font: 700 10px/1.2 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.profile-row-copy { min-width: 0; }
.profile-row-type { display: block; margin-bottom: 11px; }
.profile-row-copy h3 { margin: 0 0 8px; color: var(--heading); font: 500 clamp(27px, 3vw, 36px)/1.08 Georgia, serif; }
.profile-row-copy p { margin: 0; color: var(--text-soft); font-size: 14px; line-height: 1.55; }
.profile-row-copy p b { display: block; margin-bottom: 3px; color: var(--text); font-size: 16px; font-weight: 650; }

/* Photo-backed hobbies */
.hobby-card { min-height: 170px; position: relative; isolation: isolate; overflow: hidden; color: #fff; border-color: var(--line); border-radius: var(--radius); background-image: linear-gradient(180deg, rgba(100,58,135,.12) 8%, rgba(7,5,10,.91) 100%), url("assets/site/hobbies-grid.webp"); background-size: 100% 100%, 200% 200%; background-repeat: no-repeat; box-shadow: none; }
.hobby-card::after { content: ""; position: absolute; inset: 0; z-index: -1; border-radius: inherit; box-shadow: inset 0 0 0 1px rgba(255,255,255,.16); pointer-events: none; }
.hobby-basketball { background-position: center, left top; }
.hobby-billiards { background-position: center, right top; }
.hobby-piano { background-position: center, left bottom; }
.hobby-bridge { background-position: 50% 50%, 100% 100%; }
.hobby-card.hobby-touch { background-image: linear-gradient(180deg, rgba(100,58,135,.10) 8%, rgba(7,5,10,.91) 100%), url("assets/site/touch-rugby-ball-v2.webp"); background-size: 100% 100%, cover; background-position: center, center; }
.hobby-card > span, .hobby-card > div { position: relative; z-index: 1; }
.hobby-card > span { color: rgba(255,255,255,.88); }
.hobby-card h3 { color: #fff; text-shadow: 0 2px 18px rgba(0,0,0,.45); }
.hobby-card p { color: rgba(255,255,255,.78); }

.contact { padding-block: 116px; text-align: center; }
.contact h2 { max-width: 900px; margin-inline: auto; font-size: clamp(42px, 5.5vw, 72px); line-height: 1.02; }
.contact-row { display: flex; align-items: center; justify-content: center; gap: 26px; margin-top: 38px; }
.wechat-trigger { border: 0; padding: 0; background: transparent; cursor: pointer; font: inherit; }
.wechat-dialog { width: min(92vw, 820px); max-height: 90vh; padding: 0; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 28px; background: var(--surface); color: var(--text); box-shadow: 0 32px 100px rgba(0,0,0,.42); }
.wechat-dialog::backdrop { background: rgba(8,4,12,.80); backdrop-filter: blur(10px); }
.wechat-dialog[open] { display: grid; grid-template-columns: minmax(190px,.72fr) minmax(300px,1fr); align-items: center; }
.wechat-dialog-copy { padding: 44px 20px 44px 44px; }
.wechat-dialog-copy h2 { margin: 12px 0 16px; font-size: clamp(34px,4.2vw,58px); line-height: .98; }
.wechat-dialog-copy p:last-child { max-width: 28ch; color: var(--text-soft); line-height: 1.7; }
.wechat-dialog img { display: block; width: 100%; max-height: 84vh; object-fit: contain; background: #fff; }
.wechat-close { position: absolute; z-index: 2; top: 16px; right: 18px; width: 38px; height: 38px; border: 1px solid rgba(7,17,26,.14); border-radius: 50%; background: rgba(255,255,255,.92); color: #07111a; cursor: pointer; font: 300 26px/1 sans-serif; }
.wechat-close:hover { transform: rotate(8deg); }
.text-link { color: var(--text-soft); font-size: 13px; border-bottom: 1px solid var(--line-strong); }
.site-meta-section { padding-block: 54px 58px; border-top: 1px solid var(--line); background: linear-gradient(180deg, transparent, rgba(117,76,157,.07)); }
.site-meta-heading { margin-bottom: 18px; }
.site-meta-heading .eyebrow { margin: 0; }
.site-meta-section .hero-meta { max-width: none; margin-top: 0; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.site-meta-section .live-item { min-height: 44px; background: var(--surface); }
.footer { border-top: 1px solid var(--line); }
.footer .shell { min-height: 84px; display: flex; justify-content: space-between; align-items: center; gap: 20px; color: var(--text-soft); font: 500 10px/1.4 ui-monospace, monospace; }
.footer a:hover { color: var(--accent); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .72s ease, transform .72s cubic-bezier(.2,.8,.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spin-reverse { to { transform: rotate(-360deg); } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes pulse { 70% { box-shadow: 0 0 0 9px rgba(197,163,255,0); } 100% { box-shadow: 0 0 0 0 rgba(197,163,255,0); } }
@keyframes grid-drift { to { transform: perspective(500px) rotateX(58deg) rotateZ(-12deg) translate3d(-12px, 8px, 0); } }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 70px; padding-top: 136px; padding-bottom: 116px; }
  .hero-copy { max-width: 780px; }
  .hero-profile { justify-self: center; width: min(560px, 86vw); grid-template-columns: minmax(190px,.8fr) minmax(230px,1.2fr); }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .section-heading > p { max-width: 620px; }
  .profile-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr 1fr; }
  .hobby-grid { grid-template-columns: 1fr 1fr; }
  .hobby-touch { grid-column: span 2; }
  .project-locsource { grid-column: span 2; min-height: 350px; }
  .project-art-locsource { background-size: cover; background-position: center 56%; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 30px, 1180px); }
  .site-header { background: var(--header-bg); backdrop-filter: blur(18px); }
  .nav { height: 68px; }
  .brand-name { display: none; }
  .nav-toggle { display: block; order: 2; }
  .nav-actions { margin-left: auto; }
  .nav-cv { display: none; }
  .nav-links { position: fixed; inset: 68px 0 auto; height: calc(100svh - 68px); display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 30px 24px; background: var(--bg); transform: translateX(100%); visibility: hidden; transition: .35s cubic-bezier(.2,.8,.2,1); }
  .nav-links.open { transform: translateX(0); visibility: visible; }
  .nav-links a { padding: 18px 0; border-bottom: 1px solid var(--line); color: var(--text); font: 500 28px/1 Georgia, serif; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .hero { min-height: auto; gap: 52px; padding-top: 118px; padding-bottom: 96px; }
  .hero h1 { font-size: clamp(48px, 15vw, 72px); }
  [data-language="zh"] .hero h1 { font-size: clamp(42px, 12vw, 58px); }
  .hero-lede { font-size: 16px; }
  .hero-meta { grid-template-columns: 1fr 1fr; gap: 7px; }
  .live-item { padding: 9px; font-size: 9px; }
  .hero-profile { width: min(460px, 92vw); grid-template-columns: 160px minmax(0,1fr); gap: 20px; }
  .hero-direction { min-height: 60px; }
  .contact-popover { right: 0; left: auto; width: min(290px, calc(100vw - 30px)); transform-origin: top right; }
  .contact-qr-preview { position: relative; top: auto; right: auto; bottom: auto; left: auto; width: 100%; max-height: 0; margin: 0; padding: 0; overflow: hidden; border-width: 0; border-radius: 12px; box-shadow: none; opacity: 0; transform: none; transition: max-height .24s ease, margin .24s ease, padding .24s ease, opacity .2s ease; }
  .contact-wechat-option:hover .contact-qr-preview, .contact-wechat-option:focus-within .contact-qr-preview, .contact-wechat-option.qr-open .contact-qr-preview { max-height: 300px; margin-top: 6px; padding: 8px; border-width: 1px; opacity: 1; transform: none; }
  .section, .profile-section { padding-block: 88px; }
  .research-section { padding-bottom: 30px; }
  .projects-section { padding-top: 34px; }
  .section-heading { margin-bottom: 38px; }
  .publication-grid, .project-grid { grid-template-columns: 1fr; }
  .pub-card, .pub-card.featured { min-height: 0; grid-template-columns: 1fr; }
  .pub-visual { min-height: 280px; padding: 22px 18px; border-right: 0; border-bottom: 1px solid var(--line); }
  .publication-figure { min-height: 0; padding: 0; }
  .publication-figure img, .publication-animation { min-height: 0; aspect-ratio: 5 / 3; object-fit: cover; }
  .pub-info { min-height: 300px; padding: 25px 26px; }
  .project-grid { grid-template-columns: 1fr; }
  .project-locsource { grid-column: auto; min-height: 410px; }
  .project-card { min-height: 410px; }
  .education-card { align-items: flex-start; flex-direction: column; }
  .honors > div { grid-template-columns: 72px minmax(0, 1fr); grid-template-rows: auto auto; gap: 5px 14px; padding: 16px 0; }
  .honor-logo { grid-column: 1; grid-row: 1 / span 2; align-self: center; }
  .honors > div > span { grid-column: 2; grid-row: 1; }
  .honors > div > p { grid-column: 2; grid-row: 2; }
  .profile-grid { gap: 42px; }
  .profile-row { min-height: 132px; grid-template-columns: 94px minmax(0, 1fr); grid-template-rows: auto 1fr; gap: 7px 18px; padding: 20px 0; }
  .profile-row-logo { grid-column: 1; grid-row: 1 / span 2; width: 88px; height: 88px; }
  .profile-group-education .profile-row-logo img { width: 84px; height: 84px; }
  .profile-row-year { grid-column: 2; grid-row: 1; align-self: end; }
  .profile-row-copy { grid-column: 2; grid-row: 2; }
  .profile-row-type { display: none; }
  .profile-row-copy h3 { font-size: 27px; }
  .profile-row-copy p { font-size: 12px; }
  .profile-row-copy p b { font-size: 15px; }
  .contact { padding-block: 100px; }
  .contact-row { flex-direction: column; }
  .wechat-dialog[open] { grid-template-columns: 1fr; overflow-y: auto; }
  .wechat-dialog-copy { padding: 34px 30px 20px; }
  .wechat-dialog img { max-height: none; }
  .footer .shell { padding: 24px 0; align-items: flex-start; flex-direction: column; }
  .news-section { grid-template-columns: 1fr; gap: 14px; padding-block: 34px 46px; }
  .news-heading { padding-top: 0; }
  .news-row { grid-template-columns: 90px minmax(0,1fr); gap: 16px; }
  .site-meta-section .hero-meta { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 420px) {
  .hero h1 { font-size: 47px; }
  .button { width: 100%; }
  .hero-actions { display: grid; }
  .hero-profile { width: min(360px, 94vw); grid-template-columns: 125px minmax(0,1fr); gap: 14px; }
  .hero-headshot { border-radius: 17px; }
  .hero-direction { min-height: 54px; grid-template-columns: 24px minmax(0,1fr); gap: 8px; }
  .hero-direction strong { font-size: 13px; }
  .language-toggle { padding-inline: 9px; font-size: 11px; }
  .project-card { padding: 22px; border-radius: 19px; }
  .hobby-card { min-height: 175px; padding: 18px; }
  .pub-card { border-radius: 19px; }
  .site-meta-section .hero-meta { grid-template-columns: 1fr; }
}

@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; }
  .publication-animation { display: none; }
  .publication-poster { display: block !important; }
}