:root {
  --ink: #07111f;
  --ink-2: #0a1728;
  --panel: #0e2035;
  --panel-soft: #11263e;
  --paper: #f4f7f8;
  --paper-2: #eaf0f2;
  --white: #ffffff;
  --muted: #91a4b7;
  --muted-dark: #5d6b78;
  --line: rgba(255, 255, 255, 0.12);
  --line-dark: rgba(7, 17, 31, 0.14);
  --cyan: #4fe0d0;
  --cyan-soft: #9af5e9;
  --blue: #4a8dff;
  --lime: #d8ff69;
  --radius: 18px;
  --shell: min(1180px, calc(100vw - 48px));
  --shadow: 0 24px 80px rgba(0, 12, 26, 0.18);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  background: var(--ink);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "DM Sans", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

html[data-lang="en"] .lang-zh,
html[data-lang="zh"] .lang-en { display: none !important; }

html[data-lang="zh"] body { font-family: "Noto Sans SC", "DM Sans", sans-serif; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
button { color: inherit; }

.shell { width: var(--shell); margin-inline: auto; position: relative; }
.section { padding: 132px 0; position: relative; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; left: 20px; top: -60px; background: var(--cyan); color: var(--ink); padding: 10px 16px; border-radius: 8px; font-weight: 700; transition: top .2s ease; }
.skip-link:focus { top: 12px; }

.page-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .2;
  background-image: linear-gradient(rgba(79, 224, 208, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(79, 224, 208, .06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 70%);
}

.cursor-glow {
  position: fixed;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 224, 208, .08), transparent 67%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  left: 70%;
  top: 30%;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  color: var(--white);
  background: rgba(7, 17, 31, .72);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: background .25s ease, box-shadow .25s ease;
}

.site-header.scrolled { background: rgba(7, 17, 31, .94); box-shadow: 0 10px 40px rgba(0, 0, 0, .2); }
.nav-shell { height: 78px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-mark { position: relative; width: 36px; height: 36px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; align-items: end; padding: 5px; border: 1px solid rgba(79, 224, 208, .5); border-radius: 9px; overflow: hidden; }
.brand-mark::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(79, 224, 208, .16), transparent); }
.brand-mark i { display: block; background: var(--cyan); border-radius: 3px 3px 1px 1px; box-shadow: 0 0 14px rgba(79, 224, 208, .65); }
.brand-mark i:nth-child(1) { height: 52%; }
.brand-mark i:nth-child(2) { height: 90%; }
.brand-mark i:nth-child(3) { height: 68%; }
.brand-copy { display: flex; flex-direction: column; line-height: 1; }
.brand-copy strong { font: 800 18px/1 "Manrope", sans-serif; letter-spacing: .13em; }
.brand-copy small { margin-top: 6px; font-size: 9px; color: var(--muted); letter-spacing: .18em; }

.site-nav { display: flex; align-items: center; justify-content: center; gap: clamp(16px, 2vw, 30px); margin-left: auto; }
.site-nav a { position: relative; color: #d6e0e8; font-size: 15px; font-weight: 600; letter-spacing: .025em; white-space: nowrap; }
.site-nav a::after { content: ""; position: absolute; left: 0; bottom: -8px; width: 100%; height: 1px; background: var(--cyan); transform: scaleX(0); transform-origin: right; transition: transform .25s ease; }
.site-nav a:hover::after, .site-nav a.active::after { transform: scaleX(1); transform-origin: left; }
.site-nav a:hover, .site-nav a.active { color: var(--white); }

.language-toggle { display: flex; align-items: center; justify-content: center; gap: 5px; min-width: 74px; height: 38px; padding: 0 12px; border: 1px solid rgba(255, 255, 255, .2); background: rgba(255, 255, 255, .04); border-radius: 999px; color: var(--muted); font-size: 13px; font-weight: 700; cursor: pointer; transition: border-color .2s ease, background .2s ease; }
.language-toggle:hover { border-color: var(--cyan); background: rgba(79, 224, 208, .08); }
.language-toggle .language-active { color: var(--cyan); }
.language-divider { opacity: .4; }
.menu-toggle { display: none; margin-left: auto; width: 42px; height: 42px; padding: 10px; background: transparent; border: 0; cursor: pointer; }
.menu-toggle > span:not(.sr-only) { display: block; height: 1px; margin: 5px 0; background: currentColor; transition: transform .2s ease, opacity .2s ease; }

.hero {
  min-height: 100vh;
  padding: 150px 0 42px;
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 32%, rgba(74, 141, 255, .17), transparent 31%),
    radial-gradient(circle at 55% 68%, rgba(79, 224, 208, .07), transparent 25%),
    var(--ink);
}

.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7,17,31,0) 0 49.9%, rgba(255,255,255,.05) 50%, rgba(7,17,31,0) 50.1%); pointer-events: none; }
.hero-orbit { position: absolute; border: 1px solid rgba(79, 224, 208, .14); border-radius: 50%; pointer-events: none; }
.orbit-one { width: 640px; height: 640px; top: 8%; right: -160px; }
.orbit-two { width: 430px; height: 430px; top: 20%; right: -55px; border-style: dashed; animation: spin 42s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr); align-items: center; gap: clamp(50px, 8vw, 110px); }
.hero-copy { position: relative; z-index: 2; }
.eyebrow, .section-index { margin: 0 0 26px; color: var(--cyan); font: 700 11px/1.4 "Manrope", sans-serif; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 0 rgba(79, 224, 208, .55); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(79, 224, 208, 0); } 100% { box-shadow: 0 0 0 0 rgba(79, 224, 208, 0); } }
.hero h1 { margin: 0; max-width: 740px; font: 700 clamp(50px, 6.3vw, 86px)/.98 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: -.055em; }
.hero h1 em { color: var(--cyan); font-style: normal; }
html[data-lang="zh"] .hero h1 { font-size: clamp(48px, 4.8vw, 64px); line-height: 1.14; letter-spacing: -.04em; }
.hero-lede { max-width: 680px; margin: 32px 0 0; color: #b8c7d4; font-size: clamp(16px, 1.5vw, 19px); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.button { min-height: 51px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; gap: 28px; border: 1px solid transparent; border-radius: 4px; font-size: 13px; font-weight: 700; letter-spacing: .04em; transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--cyan); color: var(--ink); }
.button-primary:hover { background: var(--cyan-soft); box-shadow: 0 15px 35px rgba(79, 224, 208, .18); }
.button-ghost { color: inherit; border-color: currentColor; background: transparent; }
.button-ghost:hover { color: var(--cyan); border-color: var(--cyan); }
.button-light { color: var(--ink); background: var(--white); }
.button-light:hover { background: var(--lime); }
.hero-location { display: flex; gap: 22px; margin: 42px 0 0; color: #6f8597; font: 500 10px/1 "Manrope", sans-serif; letter-spacing: .16em; text-transform: uppercase; }

.hero-visual { position: relative; min-height: 0; z-index: 1; }
.faculty-hero { position: relative; display: grid; gap: 12px; margin: 0 0 0 28px; }
.faculty-photo-frame { position: relative; aspect-ratio: 1; overflow: hidden; background: #6f8090; border: 1px solid rgba(79,224,208,.28); box-shadow: 0 34px 80px rgba(0,0,0,.32); }
.faculty-photo-frame::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 56%, rgba(7,17,31,.38) 100%), linear-gradient(135deg, rgba(79,224,208,.08), transparent 38%); pointer-events: none; }
.faculty-photo-frame img { width: 100%; height: 100%; object-fit: cover; object-position: center 18%; filter: saturate(.78) contrast(1.03); }
.portrait-grid { position: absolute; inset: 0; z-index: 1; opacity: .18; background-image: linear-gradient(rgba(79,224,208,.28) 1px, transparent 1px), linear-gradient(90deg, rgba(79,224,208,.28) 1px, transparent 1px); background-size: 54px 54px; mask-image: linear-gradient(to bottom, black, transparent 52%); pointer-events: none; }
.faculty-kicker { position: absolute; z-index: 3; top: 19px; left: 19px; padding: 8px 10px; color: var(--ink); background: var(--cyan); font: 800 9px/1 "Manrope", sans-serif; letter-spacing: .15em; }
.faculty-caption { position: relative; z-index: 4; min-height: 0; padding: 24px 26px 22px; color: var(--white); background: rgba(7,17,31,.95); border: 1px solid rgba(255,255,255,.16); border-left: 3px solid var(--cyan); box-shadow: 0 20px 50px rgba(0,0,0,.28); backdrop-filter: blur(15px); }
.faculty-name { margin: 0; font: 700 26px/1.05 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: -.035em; }
.faculty-title { margin: 7px 0 0; color: var(--cyan); font: 700 11px/1.3 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: .08em; text-transform: uppercase; }
.faculty-summary { max-width: 440px; margin: 13px 0 0; color: #b9c7d3; font-size: 13px; line-height: 1.55; }
.faculty-links { display: flex; gap: 22px; margin-top: 15px; }
.faculty-links a { color: #eef7fb; font: 700 10px/1 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: .09em; text-transform: uppercase; }
.faculty-links a:hover { color: var(--cyan); }
.vision-frame { position: absolute; inset: 15px 25px 25px 45px; padding: 20px; background: linear-gradient(145deg, rgba(18, 44, 68, .88), rgba(8, 22, 38, .52)); border: 1px solid rgba(79, 224, 208, .22); box-shadow: var(--shadow); backdrop-filter: blur(8px); overflow: hidden; }
.vision-frame::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(79,224,208,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(79,224,208,.08) 1px, transparent 1px); background-size: 38px 38px; opacity: .35; }
.abstract-viewport { position: absolute; inset: 30px; overflow: hidden; background: radial-gradient(circle at 50% 42%, rgba(28,93,116,.42), transparent 35%), linear-gradient(145deg, #102940, #081525 72%); }
.abstract-viewport::before { content: ""; position: absolute; inset: 0; z-index: 1; opacity: .38; pointer-events: none; background-image: linear-gradient(rgba(79,224,208,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(79,224,208,.08) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(circle at center, black, transparent 76%); }
.depth-grid { position: absolute; z-index: 0; left: -30%; right: -30%; bottom: -25%; height: 72%; opacity: .45; transform: perspective(520px) rotateX(65deg); transform-origin: center bottom; background-image: linear-gradient(rgba(74,141,255,.28) 1px, transparent 1px), linear-gradient(90deg, rgba(74,141,255,.28) 1px, transparent 1px); background-size: 38px 38px; }
.neural-field { position: absolute; z-index: 2; inset: 4% 3% 6%; width: 94%; height: 90%; overflow: visible; }
.orbit-set { stroke-width: 1; opacity: .42; transform-box: fill-box; transform-origin: center; animation: field-rotate 28s linear infinite; }
.field-volume { stroke-width: 1.4; opacity: .78; filter: drop-shadow(0 0 5px rgba(79,224,208,.18)); }
.feature-plane { opacity: .78; animation: plane-drift 5s ease-in-out infinite alternate; }
.field-nodes circle { filter: drop-shadow(0 0 6px rgba(79,224,208,.85)); }
.field-nodes .core-node { fill: var(--lime); transform-box: fill-box; transform-origin: center; animation: node-pulse 1.8s ease-in-out infinite; }
.point-cloud { opacity: .68; }
.point-cloud circle:nth-child(3n) { fill: var(--blue); }
.signal-wave { opacity: .68; filter: drop-shadow(0 0 5px rgba(216,255,105,.45)); stroke-dasharray: 520; stroke-dashoffset: 520; animation: draw-wave 4.5s ease-in-out infinite; }
.field-label { position: absolute; z-index: 4; left: 18px; bottom: 19px; display: flex; flex-direction: column; gap: 6px; }
.field-label span { color: var(--cyan); font: 700 7px/1 "Manrope", sans-serif; letter-spacing: .18em; }
.field-label strong { color: rgba(255,255,255,.74); font: 600 10px/1.35 "Manrope", sans-serif; letter-spacing: .12em; }
.field-status { position: absolute; z-index: 4; top: 17px; right: 18px; display: flex; align-items: center; gap: 7px; color: rgba(255,255,255,.66); font: 700 8px/1 "Manrope", sans-serif; letter-spacing: .14em; }
.field-status i { width: 6px; height: 6px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 10px rgba(216,255,105,.8); }
.focus-frame { position: absolute; z-index: 5; left: 24%; top: 17%; width: 52%; height: 58%; }
.focus-frame span { position: absolute; width: 24px; height: 24px; border-color: rgba(154,245,233,.68); }
.focus-frame span:nth-child(1) { left: 0; top: 0; border-left: 1px solid; border-top: 1px solid; }
.focus-frame span:nth-child(2) { right: 0; top: 0; border-right: 1px solid; border-top: 1px solid; }
.focus-frame span:nth-child(3) { left: 0; bottom: 0; border-left: 1px solid; border-bottom: 1px solid; }
.focus-frame span:nth-child(4) { right: 0; bottom: 0; border-right: 1px solid; border-bottom: 1px solid; }
@keyframes field-rotate { to { transform: rotate(360deg); } }
@keyframes plane-drift { to { transform: translateY(12px); opacity: .45; } }
@keyframes node-pulse { 50% { transform: scale(1.65); opacity: .55; } }
@keyframes draw-wave { 0% { stroke-dashoffset: 520; opacity: .15; } 48%, 72% { stroke-dashoffset: 0; opacity: .8; } 100% { stroke-dashoffset: -520; opacity: .15; } }
.scan-line { position: absolute; z-index: 4; left: 0; top: 20%; width: 100%; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan), transparent); box-shadow: 0 0 16px var(--cyan); animation: scan 5s ease-in-out infinite; }
@keyframes scan { 0%, 100% { top: 16%; opacity: 0; } 15%, 85% { opacity: .8; } 50% { top: 82%; } }
.corner { position: absolute; z-index: 5; width: 24px; height: 24px; border-color: var(--cyan); }
.corner-tl { left: 13px; top: 13px; border-left: 2px solid; border-top: 2px solid; }
.corner-tr { right: 13px; top: 13px; border-right: 2px solid; border-top: 2px solid; }
.corner-bl { left: 13px; bottom: 13px; border-left: 2px solid; border-bottom: 2px solid; }
.corner-br { right: 13px; bottom: 13px; border-right: 2px solid; border-bottom: 2px solid; }
.detection-box { position: absolute; z-index: 5; border: 1px solid var(--cyan); box-shadow: inset 0 0 20px rgba(79,224,208,.04); }
.detection-box span { position: absolute; left: -1px; bottom: 100%; padding: 4px 7px; color: var(--ink); background: var(--cyan); font: 700 8px/1 "Manrope", sans-serif; letter-spacing: .08em; white-space: nowrap; }
.vision-coordinates { position: absolute; z-index: 6; display: flex; justify-content: flex-end; gap: 24px; left: 40px; right: 40px; bottom: 42px; color: rgba(255,255,255,.62); font: 600 8px/1 "Manrope", sans-serif; letter-spacing: .14em; }
.floating-card { position: absolute; z-index: 7; display: flex; flex-direction: column; padding: 15px 17px; color: var(--white); background: rgba(7, 17, 31, .86); border: 1px solid rgba(255,255,255,.16); box-shadow: 0 15px 40px rgba(0,0,0,.25); backdrop-filter: blur(12px); }
.floating-card span { color: var(--muted); font: 700 8px/1 "Manrope", sans-serif; letter-spacing: .16em; }
.floating-card strong { margin-top: 9px; font: 600 13px/1.2 "Manrope", sans-serif; }
.card-model { left: 0; bottom: 76px; min-width: 160px; }
.card-model i { width: 100%; height: 2px; margin-top: 13px; background: linear-gradient(90deg, var(--cyan) 74%, rgba(255,255,255,.14) 74%); }
.card-signal { right: 0; top: 60px; min-width: 116px; }
.card-signal strong { color: var(--lime); font-size: 28px; }
.card-signal small { color: var(--muted); font-size: 10px; }

.metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 74px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metric-strip > div { min-height: 112px; padding: 22px clamp(16px, 3vw, 34px); display: flex; flex-direction: column; justify-content: center; border-right: 1px solid var(--line); }
.metric-strip > div:first-child { padding-left: 0; }
.metric-strip > div:last-child { border-right: 0; }
.metric-strip strong { color: var(--white); font: 700 32px/1 "Manrope", sans-serif; letter-spacing: -.04em; }
.metric-strip sup { color: var(--cyan); font-size: .55em; }
.metric-strip span { margin-top: 9px; color: var(--muted); font-size: 11px; letter-spacing: .05em; text-transform: uppercase; }

.section-heading { display: grid; grid-template-columns: minmax(150px, .55fr) minmax(0, 1.45fr); gap: 80px; align-items: start; margin-bottom: 68px; }
.section-heading.compact { grid-template-columns: minmax(150px, .55fr) minmax(0, 1.45fr); }
.section-heading h2, .pi-copy h2, .news-intro h2, .join-panel h2 { margin: 0; font: 700 clamp(42px, 5vw, 68px)/1.04 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: -.05em; }
html[data-lang="zh"] .section-heading h2, html[data-lang="zh"] .pi-copy h2, html[data-lang="zh"] .news-intro h2, html[data-lang="zh"] .join-panel h2 { line-height: 1.18; letter-spacing: -.035em; }
.section-heading > div > p { max-width: 700px; margin: 24px 0 0; color: var(--muted-dark); font-size: 18px; }

.research-section { background: var(--paper); }
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.research-card { min-height: 340px; padding: 32px; position: relative; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); overflow: hidden; transition: background .28s ease, color .28s ease, transform .28s ease; }
.research-card::after { content: ""; position: absolute; width: 210px; height: 210px; right: -120px; bottom: -120px; border: 1px solid rgba(79,224,208,.25); border-radius: 50%; transition: transform .35s ease; }
.research-card:hover { z-index: 2; color: var(--white); background: var(--ink-2); transform: translateY(-5px); box-shadow: var(--shadow); }
.research-card:hover::after { transform: scale(1.5); }
.research-card:hover p, .research-card:hover .card-number { color: var(--muted); }
.card-number { position: absolute; top: 26px; right: 28px; color: #7c8994; font: 600 10px/1 "Manrope", sans-serif; letter-spacing: .14em; }
.research-card h3 { margin: 90px 0 14px; font: 700 22px/1.2 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: -.025em; }
.research-card p { margin: 0; color: var(--muted-dark); font-size: 15px; }
.research-icon { position: absolute; top: 34px; left: 32px; width: 42px; height: 42px; }
.icon-eye { border: 1px solid var(--blue); border-radius: 70% 20%; transform: rotate(45deg); }
.icon-eye::after { content: ""; position: absolute; width: 10px; height: 10px; left: 14px; top: 14px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }
.icon-nodes { background: radial-gradient(circle at 15% 70%, var(--cyan) 0 3px, transparent 4px), radial-gradient(circle at 70% 18%, var(--blue) 0 4px, transparent 5px), radial-gradient(circle at 88% 82%, var(--lime) 0 3px, transparent 4px); }
.icon-nodes::before, .icon-nodes::after { content: ""; position: absolute; height: 1px; width: 42px; top: 21px; left: 0; background: rgba(74,141,255,.7); transform: rotate(-37deg); }
.icon-nodes::after { transform: rotate(42deg); }
.icon-space { border: 1px solid var(--cyan); }
.icon-space::before { content: ""; position: absolute; inset: 8px; border: 1px solid var(--blue); transform: translate(8px, -8px); }
.icon-med::before, .icon-med::after { content: ""; position: absolute; background: var(--cyan); border-radius: 3px; }
.icon-med::before { width: 12px; height: 40px; left: 15px; top: 1px; }
.icon-med::after { height: 12px; width: 40px; top: 15px; left: 1px; }
.icon-atom { border: 1px solid var(--blue); border-radius: 50%; transform: scaleY(.52) rotate(35deg); }
.icon-atom::before, .icon-atom::after { content: ""; position: absolute; inset: -1px; border: 1px solid var(--cyan); border-radius: 50%; }
.icon-atom::before { transform: rotate(60deg); }
.icon-atom::after { transform: rotate(-60deg); }
.icon-quantum { border: 1px dashed var(--blue); border-radius: 50%; }
.icon-quantum::before { content: ""; position: absolute; inset: 11px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 15px var(--cyan); }
.research-card:hover .research-icon { filter: drop-shadow(0 0 9px rgba(79,224,208,.45)); }

.pi-section { color: var(--white); background: var(--ink-2); overflow: hidden; }
.pi-section::before { content: "WICA"; position: absolute; right: -50px; bottom: -80px; color: rgba(255,255,255,.018); font: 800 270px/1 "Manrope", sans-serif; letter-spacing: -.08em; }
.pi-layout { display: grid; grid-template-columns: minmax(360px, .82fr) minmax(0, 1.18fr); gap: clamp(70px, 9vw, 130px); align-items: center; }
.pi-photo { position: relative; }
.pi-photo-panel { position: relative; aspect-ratio: .82; overflow: hidden; background: var(--panel); border: 1px solid rgba(255,255,255,.1); }
.pi-photo-panel::after { content: ""; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(79,224,208,.11), transparent 45%), linear-gradient(to top, rgba(7,17,31,.62), transparent 35%); }
.pi-photo-panel img { width: 100%; height: 100%; object-fit: cover; object-position: top center; filter: saturate(.72) contrast(1.05); }
.pi-photo > p { position: absolute; z-index: 2; left: -18px; bottom: 42px; margin: 0; padding: 9px 14px; color: var(--ink); background: var(--cyan); font: 700 11px/1 "Manrope", sans-serif; letter-spacing: .13em; }
.pi-copy .section-index { margin-bottom: 34px; }
.pi-copy h2 { font-size: clamp(50px, 5.6vw, 76px); }
.pi-title { margin: 10px 0 30px !important; color: var(--cyan) !important; font-weight: 600; }
.pi-copy > p { color: #b3c1ce; font-size: 16px; }
.pi-links { display: flex; flex-wrap: wrap; gap: 9px 22px; padding: 22px 0; margin-top: 28px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pi-links a { color: var(--white); font-size: 12px; font-weight: 700; letter-spacing: .04em; }
.pi-links a:hover { color: var(--cyan); }
.timeline-mini { margin-top: 27px; }
.timeline-mini > div { display: grid; grid-template-columns: 92px 1fr; gap: 14px; padding: 10px 0; color: var(--muted); font-size: 13px; border-bottom: 1px solid rgba(255,255,255,.07); }
.timeline-mini time { color: var(--cyan); font-family: "Manrope", sans-serif; }

.publication-section { background: #f8fafb; }
.publication-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.publication-card { min-width: 0; padding: 14px 14px 23px; border: 1px solid var(--line-dark); background: var(--white); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.publication-card:hover { transform: translateY(-7px); border-color: rgba(74,141,255,.45); box-shadow: 0 24px 55px rgba(8,25,44,.11); }
.publication-image { height: 205px; display: block; overflow: hidden; background: #e5eaed; }
.publication-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease, filter .3s ease; }
.publication-card:hover .publication-image img { transform: scale(1.035); }
.publication-meta { display: flex; justify-content: space-between; gap: 16px; margin-top: 18px; color: var(--blue); font: 700 9px/1 "Manrope", sans-serif; letter-spacing: .11em; text-transform: uppercase; }
.publication-card h3 { min-height: 83px; margin: 15px 0 9px; font: 700 18px/1.36 "Manrope", sans-serif; letter-spacing: -.025em; }
.publication-card > p { min-height: 44px; margin: 0 0 12px; color: var(--muted-dark); font-size: 12px; }
.text-link { color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.text-link:hover { color: #0e58c5; }
.section-footer { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-top: 42px; }
.section-footer .button { color: var(--ink); }
.section-footer p { color: var(--muted-dark); font-size: 13px; }
.section-footer p a { color: var(--blue); font-weight: 700; }

.people-section { background: var(--paper-2); }
.team-toolbar, .alumni-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 17px 0; border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.team-toolbar p, .alumni-toolbar p { margin: 0; color: var(--muted-dark); font: 700 10px/1 "Manrope", sans-serif; letter-spacing: .14em; }
.team-expand, .alumni-expand { display: inline-flex; gap: 13px; align-items: center; padding: 6px 0; background: transparent; border: 0; font-size: 12px; font-weight: 700; cursor: pointer; }
.team-expand b, .alumni-expand b { display: grid; place-items: center; width: 24px; height: 24px; color: var(--white); background: var(--ink); border-radius: 50%; font-size: 15px; transition: transform .25s ease; }
.team-expand:hover b, .alumni-expand:hover b { background: var(--blue); }
.team-expand.is-open b, .alumni-expand.is-open b { transform: rotate(45deg); }
.team-grid { margin-top: 28px; }
.member-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: transparent; }
.member-card { min-width: 0; padding: 12px 12px 19px; background: var(--paper-2); border: 1px solid var(--line-dark); }
.member-photo { position: relative; aspect-ratio: .86; overflow: hidden; background: #d8e0e3; }
.member-photo::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 -45px 50px rgba(7,17,31,.16); pointer-events: none; }
.member-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center top; filter: saturate(.76); transition: transform .35s ease, filter .35s ease; }
.member-card:hover img { transform: scale(1.035); filter: saturate(1); }
.member-card h3 { margin: 14px 0 3px; font: 700 14px/1.25 "Manrope", "Noto Sans SC", sans-serif; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.member-card p { margin: 0; color: var(--muted-dark); font-size: 11px; }
.member-card a:hover h3 { color: var(--blue); }

.alumni-section { overflow: hidden; background: #f7fafb; }
.alumni-section::before { content: "ALUMNI"; position: absolute; right: -32px; top: 44px; color: rgba(7,17,31,.025); font: 800 clamp(120px, 17vw, 250px)/.8 "Manrope", sans-serif; letter-spacing: -.08em; pointer-events: none; }
.alumni-overview { display: grid; grid-template-columns: .8fr 1.25fr .8fr; margin-bottom: 34px; color: var(--white); background: var(--ink); border-left: 4px solid var(--cyan); box-shadow: 0 24px 55px rgba(8,25,44,.1); }
.alumni-overview > div { min-height: 112px; padding: 24px 28px; display: flex; flex-direction: column; justify-content: center; border-right: 1px solid rgba(255,255,255,.12); }
.alumni-overview > div:last-child { border-right: 0; }
.alumni-overview strong { font: 700 clamp(24px, 3vw, 38px)/1 "Manrope", sans-serif; letter-spacing: -.045em; }
.alumni-overview > div:first-child strong { color: var(--cyan); }
.alumni-overview span { margin-top: 10px; color: var(--muted); font: 700 11px/1.2 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: .12em; text-transform: uppercase; }
.alumni-toolbar { border-color: var(--line-dark); }
.alumni-toolbar p { color: var(--muted-dark); font-size: 11px; }
.alumni-expand { padding: 4px 4px 4px 15px; border: 1px solid var(--line-dark); border-radius: 999px; }
.alumni-expand:hover { color: var(--blue); border-color: rgba(74,141,255,.5); }
.alumni-expand b { background: var(--blue); }
.alumni-grid { margin-top: 18px; border: 1px solid var(--line-dark); background: var(--white); box-shadow: 0 18px 48px rgba(8,25,44,.06); }
.alumni-grid:not(.expanded) { display: none; }
.alumni-table-head, .alumni-card { display: grid; grid-template-columns: 1.15fr .82fr 82px 1.25fr 1.35fr; }
.alumni-table-head { position: sticky; z-index: 4; top: 77px; color: #506073; background: #dfe9f2; border-bottom: 1px solid var(--line-dark); }
.alumni-table-head span { padding: 14px 17px; font: 800 11px/1.2 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: .08em; text-transform: uppercase; border-right: 1px solid rgba(7,17,31,.08); }
.alumni-table-head span:last-child { border-right: 0; }
.alumni-letter-group { display: block; }
.alumni-letter-group.alumni-extra-group { display: none; }
.alumni-grid.expanded .alumni-letter-group { display: block; }
.alumni-letter { min-height: 48px; padding: 10px 17px; display: flex; align-items: center; gap: 12px; color: var(--white); background: var(--ink-2); border-top: 1px solid rgba(255,255,255,.08); }
.alumni-letter strong { min-width: 102px; color: var(--cyan); font: 800 22px/1 "Manrope", sans-serif; letter-spacing: -.04em; }
.alumni-letter span { color: var(--muted); font: 700 10px/1 "Manrope", sans-serif; letter-spacing: .1em; }
.alumni-list { display: block; }
.alumni-card { min-width: 0; min-height: 64px; color: var(--muted-dark); background: var(--white); border-top: 1px solid rgba(7,17,31,.08); transition: color .2s ease, background .2s ease; }
.alumni-card:hover { color: #3d4b59; background: #f2f7ff; }
.alumni-card.alumni-extra { display: none; }
.alumni-grid.expanded .alumni-card { display: grid; }
.alumni-card > div, .alumni-card > time { min-width: 0; padding: 15px 17px; display: flex; align-items: center; font-size: 13px; line-height: 1.4; border-right: 1px solid rgba(7,17,31,.07); }
.alumni-card > :last-child { border-right: 0; }
.alumni-name { color: var(--ink); font: 700 14px/1.35 "Manrope", sans-serif; }
.alumni-name a { color: var(--blue); }
.alumni-name a:hover { color: #0e58c5; }
.alumni-name a span { display: inline-block; margin-left: 4px; font-size: 10px; }
.alumni-card time { color: var(--blue); font: 700 12px/1 "Manrope", sans-serif; letter-spacing: .04em; }
.alumni-note { color: #708091; font-size: 12px !important; }
.alumni-source { display: flex; justify-content: space-between; gap: 24px; margin-top: 22px; color: var(--muted-dark); font-size: 12px; }
.alumni-source a { flex: 0 0 auto; color: var(--blue); font-weight: 700; }

.news-section { color: var(--white); background: var(--ink); }
.news-layout { display: grid; grid-template-columns: .62fr 1.38fr; gap: clamp(70px, 10vw, 140px); align-items: start; }
.news-intro { position: sticky; top: 120px; }
.news-intro .section-index { margin-bottom: 35px; }
.news-intro > p:not(.section-index) { margin: 28px 0; color: var(--muted); }
.news-list { border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 82px 1fr 28px; gap: 24px; align-items: center; min-height: 132px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.news-item time { color: var(--muted); font: 600 11px/1 "Manrope", sans-serif; letter-spacing: .1em; }
.news-tag { display: block; margin-bottom: 9px; color: var(--cyan); font: 700 9px/1 "Manrope", sans-serif; letter-spacing: .12em; }
.news-item h3 { margin: 0; color: #e7edf2; font: 600 18px/1.45 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: -.02em; }
.news-item > a { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; transition: color .2s ease, border-color .2s ease, transform .2s ease; }
.news-item > a:hover { color: var(--cyan); border-color: var(--cyan); transform: translate(2px, -2px); }
.news-static { color: var(--cyan); font-size: 8px; text-align: center; }

.join-section { padding: 80px 0; color: var(--white); background: var(--ink); }
.join-panel { min-height: 530px; padding: clamp(52px, 8vw, 92px); display: flex; flex-direction: column; justify-content: center; background: linear-gradient(135deg, #185eff 0%, #1154eb 52%, #0d42bb 100%); overflow: hidden; }
.join-panel::before { content: ""; position: absolute; width: 620px; height: 620px; right: -250px; top: -270px; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; box-shadow: 0 0 0 60px rgba(255,255,255,.035), 0 0 0 130px rgba(255,255,255,.025); }
.join-panel .section-index { color: var(--lime); }
.join-panel h2 { position: relative; font-size: clamp(48px, 6vw, 76px); }
.join-panel > p:not(.section-index) { position: relative; max-width: 720px; margin: 28px 0 0; color: rgba(255,255,255,.78); font-size: 17px; }
.join-actions { position: relative; display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 38px; }
.join-actions > span { color: rgba(255,255,255,.74); font-size: 13px; }
.join-signal { position: absolute; right: 10%; bottom: 12%; width: 130px; height: 70px; display: flex; align-items: end; gap: 8px; opacity: .32; }
.join-signal span { flex: 1; background: var(--white); animation: signal 1.8s ease-in-out infinite alternate; }
.join-signal span:nth-child(1) { height: 30%; }
.join-signal span:nth-child(2) { height: 78%; animation-delay: -.4s; }
.join-signal span:nth-child(3) { height: 48%; animation-delay: -.8s; }
.join-signal span:nth-child(4) { height: 100%; animation-delay: -1.2s; }
@keyframes signal { to { height: 18%; opacity: .35; } }

.site-footer { padding: 84px 0 28px; color: var(--white); background: #040b14; }
.footer-grid { display: grid; grid-template-columns: 2.2fr .7fr .9fr 1.1fr; gap: 54px; }
.footer-brand > p, .footer-address p { color: var(--muted); font-size: 13px; }
.footer-brand > p { max-width: 300px; margin-top: 22px; }
.footer-grid h3 { margin: 4px 0 19px; color: #6f8496; font: 700 9px/1 "Manrope", sans-serif; letter-spacing: .15em; text-transform: uppercase; }
.footer-grid > div:not(.footer-brand) a { display: block; margin: 9px 0; color: #c7d1da; font-size: 13px; }
.footer-grid a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; margin-top: 72px; padding-top: 23px; color: #526779; border-top: 1px solid rgba(255,255,255,.08); font: 600 9px/1 "Manrope", sans-serif; letter-spacing: .13em; text-transform: uppercase; }

.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in-view { opacity: 1; transform: none; }

@media (max-width: 1060px) {
  :root { --shell: min(100% - 36px, 920px); }
  .site-nav { gap: 16px; }
  .site-nav a { font-size: 13px; }
  .hero-grid { grid-template-columns: 1fr 400px; gap: 35px; }
  .hero h1 { font-size: clamp(48px, 6vw, 68px); }
  .hero-visual { min-height: 0; }
  .research-card { min-height: 320px; padding: 28px; }
  .publication-grid { grid-template-columns: repeat(2, 1fr); }
  .member-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 840px) {
  .nav-shell { height: 70px; }
  .menu-toggle { display: block; }
  .language-toggle { margin-left: 0; }
  .site-nav { position: absolute; top: 70px; left: calc((100vw - var(--shell)) / -2); right: calc((100vw - var(--shell)) / -2); padding: 24px; display: none; flex-direction: column; align-items: stretch; gap: 0; background: rgba(7,17,31,.98); border-top: 1px solid var(--line); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 13px calc((100vw - var(--shell)) / 2); font-size: 15px; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .hero { padding-top: 125px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; }
  .hero-visual { min-height: 0; width: min(100%, 560px); margin: 15px auto 0; }
  .faculty-hero { margin-left: 0; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .metric-strip > div:nth-child(2) { border-right: 0; }
  .metric-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .metric-strip > div:first-child { padding-left: 22px; }
  .section { padding: 100px 0; }
  .section-heading, .section-heading.compact { grid-template-columns: 1fr; gap: 18px; }
  .section-heading { margin-bottom: 48px; }
  .research-grid { grid-template-columns: repeat(2, 1fr); }
  .alumni-table-head { display: none; }
  .alumni-grid { border: 0; background: transparent; box-shadow: none; }
  .alumni-letter { margin-top: 14px; }
  .alumni-card { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 22px; margin-top: 8px; padding: 20px; border: 1px solid var(--line-dark); }
  .alumni-card > div, .alumni-card > time { padding: 0; display: block; border-right: 0; }
  .alumni-card > div::before, .alumni-card > time::before { content: attr(data-label); display: block; margin-bottom: 6px; color: #82909d; font: 800 9px/1.2 "Manrope", "Noto Sans SC", sans-serif; letter-spacing: .1em; text-transform: uppercase; }
  .alumni-name, .alumni-card > div:nth-child(4), .alumni-note { grid-column: 1 / -1; }
  .alumni-name { font-size: 16px; }
  .pi-layout { grid-template-columns: 1fr; gap: 62px; }
  .pi-photo { width: min(100%, 520px); }
  .news-layout { grid-template-columns: 1fr; gap: 55px; }
  .news-intro { position: static; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer-address { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100vw - 28px); }
  .section { padding: 80px 0; }
  .brand-copy small { display: none; }
  .hero { min-height: auto; padding: 112px 0 30px; }
  .hero h1 { font-size: clamp(43px, 12vw, 59px); }
  html[data-lang="zh"] .hero h1 { font-size: clamp(36px, 9.6vw, 46px); }
  .hero-lede { font-size: 16px; }
  .hero-location { flex-direction: column; gap: 8px; }
  .hero-visual { min-height: 0; }
  .faculty-caption { min-height: 0; padding: 20px; }
  .faculty-name { font-size: 23px; }
  .faculty-summary { font-size: 12px; }
  .vision-frame { inset: 10px 0 25px 20px; }
  .card-signal { right: -5px; }
  .card-model { left: -4px; bottom: 45px; }
  .metric-strip { margin-top: 45px; }
  .metric-strip > div { min-height: 98px; padding: 18px; }
  .metric-strip strong { font-size: 27px; }
  .section-heading h2, .pi-copy h2, .news-intro h2 { font-size: clamp(38px, 11vw, 52px); }
  .section-heading > div > p { font-size: 16px; }
  .research-grid { grid-template-columns: 1fr; }
  .research-card { min-height: 280px; }
  .publication-grid { grid-template-columns: 1fr; }
  .publication-card h3, .publication-card > p { min-height: 0; }
  .section-footer { align-items: flex-start; flex-direction: column; }
  .member-grid { grid-template-columns: repeat(2, 1fr); }
  .alumni-overview { grid-template-columns: 1fr; }
  .alumni-overview > div { min-height: 86px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  .alumni-overview > div:last-child { border-bottom: 0; }
  .alumni-letter { flex-direction: row; gap: 10px; }
  .alumni-letter strong { font-size: 22px; }
  .alumni-source { flex-direction: column; gap: 8px; }
  .news-item { grid-template-columns: 65px 1fr 26px; gap: 13px; min-height: 120px; }
  .news-item h3 { font-size: 15px; }
  .join-section { padding: 30px 0; }
  .join-panel { min-height: 520px; padding: 44px 25px; }
  .join-panel h2 { font-size: clamp(42px, 12vw, 58px); }
  .join-panel > p:not(.section-index) { font-size: 15px; }
  .join-signal { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 45px 25px; }
  .footer-brand, .footer-address { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}