:root {
  --navy-950: #04131f;
  --navy-900: #071d2d;
  --navy-800: #0a2d43;
  --navy-700: #12435b;
  --teal-700: #087e80;
  --teal-600: #079a9a;
  --teal-500: #0bb3b0;
  --cyan-400: #4ec9e0;
  --cyan-200: #bcebf2;
  --gold-500: #e6ad3c;
  --ink: #132836;
  --ink-soft: #365162;
  --muted: #627887;
  --line: #d8e5ea;
  --line-dark: rgba(255, 255, 255, .14);
  --paper: #ffffff;
  --wash: #f3f8f9;
  --wash-2: #eaf3f5;
  --shadow-sm: 0 8px 24px rgba(10, 45, 67, .08);
  --shadow-md: 0 20px 55px rgba(4, 28, 43, .14);
  --shadow-lg: 0 30px 80px rgba(4, 24, 38, .22);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --container: 1180px;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", "Noto Serif SC", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body[data-lang="en"] .lang-zh,
body[data-lang="zh"] .lang-en { display: none !important; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
::selection { background: rgba(11, 179, 176, .22); color: var(--navy-950); }

.skip-link {
  position: fixed;
  z-index: 10000;
  left: 16px;
  top: -100px;
  padding: 10px 14px;
  background: #fff;
  color: var(--navy-900);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  transition: top .2s ease;
}
.skip-link:focus { top: 14px; }

.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
.narrow { width: min(860px, calc(100% - 40px)); margin-inline: auto; }
.section { padding: 104px 0; }
.section-tight { padding: 72px 0; }
.section-wash { background: var(--wash); }
.section-dark { color: #fff; background: var(--navy-900); }

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 15px;
  color: var(--teal-700);
  font-size: .77rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.eyebrow::before,
.section-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
  border-radius: 99px;
}
.section-dark .section-kicker { color: var(--cyan-200); }

h1, h2, h3, h4 { margin: 0; color: var(--navy-900); line-height: 1.14; letter-spacing: -.025em; }
h1 { font-size: clamp(3rem, 5.4vw, 5.25rem); }
h2 { font-size: clamp(2.15rem, 4.4vw, 4rem); }
h3 { font-size: clamp(1.35rem, 2.3vw, 1.85rem); }
h4 { font-size: 1.08rem; }
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }

.lead {
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  line-height: 1.75;
}
.section-dark .lead { color: rgba(255,255,255,.76); }
.section-head { display: grid; grid-template-columns: 1fr minmax(280px, .65fr); align-items: end; gap: 48px; margin-bottom: 50px; }
.section-head p { margin: 0; color: var(--muted); }
.section-title { max-width: 820px; }

/* Header */
.site-header {
  position: sticky;
  z-index: 1000;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(160%) blur(18px);
  transition: box-shadow .25s ease, border-color .25s ease, background .25s ease;
}
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 10px 35px rgba(9, 44, 63, .07); }
.nav-wrap { height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 13px; min-width: 245px; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  flex: 0 0 42px;
  color: #fff;
  font-weight: 850;
  letter-spacing: -.03em;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--teal-500), var(--navy-800));
  box-shadow: 0 10px 22px rgba(7, 154, 154, .22);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-text strong { color: var(--navy-900); font-size: .98rem; }
.brand-text span { margin-top: 4px; color: var(--muted); font-size: .72rem; letter-spacing: .025em; }
.nav-links { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.nav-link {
  position: relative;
  padding: 11px 12px;
  color: var(--ink-soft);
  font-size: .89rem;
  font-weight: 650;
  border-radius: 10px;
  transition: color .2s ease, background .2s ease;
}
.nav-link:hover, .nav-link:focus-visible { color: var(--navy-900); background: var(--wash); }
.nav-link[aria-current="page"] { color: var(--teal-700); }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 3px;
  height: 2px;
  background: var(--teal-500);
  border-radius: 99px;
}
.nav-actions { display: flex; align-items: center; gap: 8px; }
.lang-toggle {
  min-width: 50px;
  padding: 9px 11px;
  color: var(--navy-800);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .04em;
}
.lang-toggle:hover, .lang-toggle:focus-visible { border-color: var(--teal-500); color: var(--teal-700); }
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
}
.menu-toggle span { display: block; width: 19px; height: 2px; margin: 4px auto; background: var(--navy-800); border-radius: 3px; transition: transform .2s ease, opacity .2s ease; }
.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); }

/* Buttons */
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 13px;
  font-size: .93rem;
  font-weight: 760;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--teal-600); box-shadow: 0 12px 26px rgba(7,154,154,.24); }
.btn-primary:hover { background: var(--teal-700); box-shadow: 0 16px 34px rgba(7,154,154,.3); }
.btn-secondary { color: var(--navy-800); background: #fff; border-color: var(--line); }
.btn-secondary:hover { border-color: var(--teal-500); color: var(--teal-700); box-shadow: var(--shadow-sm); }
.btn-ghost { color: #fff; background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.24); }
.btn-ghost:hover { background: rgba(255,255,255,.14); }
.btn svg, .text-link svg { width: 18px; height: 18px; flex: 0 0 auto; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--teal-700); font-weight: 750; }
.text-link:hover { color: var(--navy-800); }

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - 82px);
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 76% 23%, rgba(42, 205, 203, .15), transparent 28%),
    radial-gradient(circle at 8% 90%, rgba(78, 201, 224, .11), transparent 32%),
    linear-gradient(130deg, var(--navy-950) 0%, #06263a 48%, #0a3a4e 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/hero-waves.svg") center/cover no-repeat;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to right, rgba(0,0,0,.15), rgba(0,0,0,.75));
  opacity: .35;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.32fr) minmax(330px, .68fr); align-items: center; gap: 56px; padding: 58px 0 66px; }
.hero-copy { max-width: 760px; }
.hero .eyebrow { color: var(--cyan-200); }
.hero h1 { color: #fff; max-width: 850px; font-size: clamp(3.05rem, 5.1vw, 4.8rem); }
.hero h1 .accent { color: var(--cyan-400); }
.hero-subtitle { margin: 19px 0 0; max-width: 740px; color: rgba(255,255,255,.75); font-size: clamp(1.04rem, 1.6vw, 1.22rem); line-height: 1.75; }
.hero-position { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 15px; color: rgba(255,255,255,.74); font-size: .92rem; }
.hero-position span { display: inline-flex; align-items: center; gap: 8px; }
.hero-position span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--teal-500); }
.hero-visual { position: relative; justify-self: end; width: min(100%, 390px); }
.portrait-frame {
  position: relative;
  padding: 17px;
  border: 1px solid rgba(255,255,255,.17);
  border-radius: 30px;
  background: linear-gradient(145deg, rgba(255,255,255,.14), rgba(255,255,255,.04));
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}
.portrait-frame::before {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: 20px;
  background: linear-gradient(180deg, #f6fafb, #e7f0f3);
}
.portrait-frame img { position: relative; width: 100%; aspect-ratio: 5/6.4; object-fit: cover; object-position: center top; border-radius: 20px; }
.hero-chip {
  position: absolute;
  z-index: 2;
  padding: 10px 13px;
  color: #fff;
  background: rgba(4,19,31,.82);
  border: 1px solid rgba(255,255,255,.17);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  font-size: .77rem;
  font-weight: 700;
}
.hero-chip strong { display: block; margin-bottom: 2px; color: var(--cyan-200); font-size: .68rem; letter-spacing: .06em; text-transform: uppercase; }
.hero-chip.one { left: -42px; top: 18%; }
.hero-chip.two { right: -34px; bottom: 24%; }
.hero-chip.three { left: -18px; bottom: 5%; }
.hero-scroll { position: absolute; z-index: 2; left: 50%; bottom: 24px; transform: translateX(-50%); display: grid; gap: 7px; justify-items: center; color: rgba(255,255,255,.48); font-size: .65rem; letter-spacing: .12em; text-transform: uppercase; }
.hero-scroll::after { content: ""; width: 1px; height: 28px; background: linear-gradient(#fff, transparent); }

/* Cards */
.card {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.card-pad { padding: 30px; }
.card:hover { border-color: #c2d9df; }

/* Vision & story */
.vision-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: 58px; align-items: center; }
.vision-copy p { margin: 23px 0 0; color: var(--ink-soft); font-size: 1.06rem; }
.signature {
  margin-top: 30px;
  padding: 22px 24px;
  border-left: 4px solid var(--teal-500);
  background: var(--wash);
  border-radius: 0 14px 14px 0;
}
.signature small { display: block; color: var(--teal-700); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.signature strong { display: block; margin-top: 7px; color: var(--navy-900); font-family: var(--font-serif); font-size: clamp(1.35rem, 2.3vw, 1.85rem); font-weight: 600; }
.image-panel { padding: 14px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow-md); }
.image-panel img { width: 100%; border-radius: 12px; }
.story-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; margin-top: 50px; }
.story-step { position: relative; padding: 28px; min-height: 220px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-sm); }
.story-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -27px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--teal-500);
  font-size: 1.7rem;
  font-weight: 800;
}
.story-index { width: 38px; height: 38px; display: grid; place-items: center; margin-bottom: 24px; color: #fff; background: var(--navy-800); border-radius: 12px; font-size: .8rem; font-weight: 850; }
.story-step:nth-child(2) .story-index { background: var(--teal-600); }
.story-step:nth-child(3) .story-index { background: var(--gold-500); color: var(--navy-950); }
.story-step p { margin: 12px 0 0; color: var(--muted); }
.story-keyword { display: inline-block; margin-top: 19px; color: var(--teal-700); font-size: .76rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }

/* Research cards */
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.research-card { display: flex; flex-direction: column; min-height: 100%; transition: transform .25s ease, box-shadow .25s ease; }
.research-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-md); }
.research-image { position: relative; aspect-ratio: 16/9; overflow: hidden; background: #f7fafb; }
.research-image img { width: 100%; height: 100%; object-fit: contain; transition: transform .45s ease; }
.research-card:hover .research-image img { transform: scale(1.025); }
.research-number { position: absolute; left: 18px; top: 17px; width: 42px; height: 42px; display: grid; place-items: center; color: #fff; background: rgba(5, 29, 45, .9); border: 1px solid rgba(255,255,255,.18); border-radius: 13px; font-weight: 850; backdrop-filter: blur(10px); }
.research-body { display: flex; flex: 1; flex-direction: column; padding: 28px; }
.research-body h3 { font-size: 1.52rem; }
.research-body p { margin: 14px 0 22px; color: var(--muted); }
.research-body .text-link { margin-top: auto; }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.tag { padding: 6px 9px; color: var(--teal-700); background: #eaf8f8; border: 1px solid #cdebea; border-radius: 999px; font-size: .69rem; font-weight: 760; }

/* Concept */
.concept-panel {
  position: relative;
  overflow: hidden;
  padding: 62px;
  color: #fff;
  border-radius: var(--radius-lg);
  background: linear-gradient(125deg, var(--navy-950), var(--navy-800));
  box-shadow: var(--shadow-lg);
}
.concept-panel::before { content: ""; position: absolute; width: 410px; height: 410px; right: -120px; top: -180px; border-radius: 50%; background: rgba(11,179,176,.16); }
.concept-panel::after { content: ""; position: absolute; width: 320px; height: 320px; left: -140px; bottom: -220px; border-radius: 50%; background: rgba(78,201,224,.11); }
.concept-inner { position: relative; z-index: 1; display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; }
.concept-copy h2 { color: #fff; }
.concept-copy p { margin: 20px 0 0; color: rgba(255,255,255,.72); }
.concept-chain { display: grid; grid-template-columns: repeat(5, 1fr); align-items: center; gap: 11px; }
.concept-node { min-height: 118px; display: grid; place-items: center; padding: 16px 10px; text-align: center; color: #fff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15); border-radius: 16px; }
.concept-node strong { display: block; font-size: .94rem; }
.concept-node span { display: block; margin-top: 6px; color: rgba(255,255,255,.58); font-size: .68rem; }
.concept-arrow { color: var(--cyan-400); text-align: center; font-size: 1.4rem; font-weight: 850; }

/* Featured work */
.featured-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feature-card { position: relative; overflow: hidden; min-height: 385px; display: flex; align-items: flex-end; padding: 32px; color: #fff; border-radius: 24px; background: var(--navy-800); box-shadow: var(--shadow-md); }
.feature-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(.82) contrast(1.02); transition: transform .5s ease; }
.feature-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(4,19,31,.08) 15%, rgba(4,19,31,.92) 91%); }
.feature-card:hover img { transform: scale(1.035); }
.feature-content { position: relative; z-index: 1; max-width: 560px; }
.feature-content small { color: var(--cyan-200); font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.feature-content h3 { margin-top: 10px; color: #fff; }
.feature-content p { margin: 13px 0 0; color: rgba(255,255,255,.72); }

/* Publications preview & list */
.pub-preview { display: grid; gap: 13px; }
.pub-row { display: grid; grid-template-columns: 54px minmax(0, 1fr) auto; gap: 20px; align-items: center; padding: 22px 24px; background: #fff; border: 1px solid var(--line); border-radius: 16px; transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.pub-row:hover { transform: translateY(-2px); border-color: #b8d4da; box-shadow: var(--shadow-sm); }
.pub-year { color: var(--teal-700); font-size: .81rem; font-weight: 850; }
.pub-title { color: var(--navy-900); font-weight: 720; line-height: 1.48; }
.pub-meta { margin-top: 6px; color: var(--muted); font-size: .86rem; }
.pub-meta em { color: var(--ink-soft); font-style: normal; font-weight: 700; }
.pub-doi { width: 38px; height: 38px; display: grid; place-items: center; color: var(--teal-700); border: 1px solid var(--line); border-radius: 11px; }
.pub-doi:hover { color: #fff; background: var(--teal-600); border-color: var(--teal-600); }
.pub-doi svg { width: 17px; height: 17px; }

/* CTA */
.cta-band { padding: 52px; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; color: #fff; border-radius: var(--radius-lg); background: linear-gradient(120deg, var(--teal-700), var(--navy-800)); box-shadow: var(--shadow-md); }
.cta-band h2 { color: #fff; font-size: clamp(2rem, 3.5vw, 3.1rem); }
.cta-band p { margin: 14px 0 0; max-width: 720px; color: rgba(255,255,255,.76); }

/* Page hero */
.page-hero { position: relative; overflow: hidden; padding: 104px 0 84px; color: #fff; background: linear-gradient(128deg, var(--navy-950), var(--navy-800)); }
.page-hero::before { content: ""; position: absolute; inset: 0; background: url("../img/hero-waves.svg") center/cover no-repeat; opacity: .8; }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; max-width: 980px; font-size: clamp(3rem, 6vw, 5.3rem); }
.page-hero p { max-width: 850px; margin: 24px 0 0; color: rgba(255,255,255,.74); font-size: 1.12rem; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; color: var(--cyan-200); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.breadcrumb span { opacity: .55; }

/* Research detail */
.theme-detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(380px, .8fr); gap: 66px; align-items: center; }
.theme-detail.reverse { grid-template-columns: minmax(380px, .8fr) minmax(0, 1fr); }
.theme-detail.reverse .theme-copy { order: 2; }
.theme-detail.reverse .theme-visual { order: 1; }
.theme-index { display: inline-flex; align-items: center; gap: 10px; color: var(--teal-700); font-size: .78rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.theme-index b { width: 38px; height: 38px; display: grid; place-items: center; color: #fff; background: var(--navy-800); border-radius: 11px; letter-spacing: 0; }
.theme-copy h2 { margin-top: 18px; }
.theme-copy > p { margin: 22px 0 0; color: var(--ink-soft); font-size: 1.04rem; }
.question-box { margin-top: 28px; padding: 20px 22px; background: var(--wash); border-left: 4px solid var(--teal-500); border-radius: 0 14px 14px 0; }
.question-box small { color: var(--teal-700); font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.question-box strong { display: block; margin-top: 7px; color: var(--navy-900); line-height: 1.55; }
.theme-visual { padding: 13px; background: #fff; border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow-md); }
.theme-visual img { width: 100%; aspect-ratio: 16/9; object-fit: contain; background: #fff; border-radius: 14px; }
.subtheme-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 30px; }
.subtheme { padding: 17px; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.subtheme h4 { font-size: .98rem; }
.subtheme p { margin: 7px 0 0; color: var(--muted); font-size: .84rem; }
.output-strip { margin-top: 30px; padding-top: 24px; border-top: 1px solid var(--line); }
.output-strip > span { display: block; margin-bottom: 11px; color: var(--muted); font-size: .75rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.output-list { display: flex; flex-wrap: wrap; gap: 8px; }
.output-list span { padding: 7px 10px; color: var(--navy-700); background: var(--wash-2); border-radius: 999px; font-size: .76rem; font-weight: 700; }
.flagship { display: grid; grid-template-columns: .9fr 1.1fr; gap: 55px; align-items: center; }
.flagship-image { padding: 13px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15); border-radius: 23px; }
.flagship-image img { width: 100%; border-radius: 14px; }
.flagship-list { display: grid; gap: 14px; margin-top: 28px; }
.flagship-item { display: grid; grid-template-columns: 36px 1fr; gap: 14px; align-items: start; }
.flagship-item b { width: 36px; height: 36px; display: grid; place-items: center; color: var(--navy-950); background: var(--cyan-200); border-radius: 10px; font-size: .76rem; }
.flagship-item p { margin: 0; color: rgba(255,255,255,.76); }

/* Publication page */
.publication-toolbar { position: sticky; z-index: 20; top: 82px; padding: 18px 0; background: rgba(243,248,249,.92); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.toolbar-grid { display: grid; grid-template-columns: minmax(240px, 1fr) auto; gap: 18px; align-items: center; }
.search-box { position: relative; }
.search-box svg { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--muted); }
.search-box input { width: 100%; height: 48px; padding: 0 16px 0 44px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 13px; outline: none; }
.search-box input:focus { border-color: var(--teal-500); box-shadow: 0 0 0 4px rgba(11,179,176,.1); }
.filter-group { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.filter-btn { padding: 9px 12px; color: var(--ink-soft); background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: .77rem; font-weight: 760; }
.filter-btn:hover, .filter-btn[aria-pressed="true"] { color: #fff; background: var(--teal-700); border-color: var(--teal-700); }
.publication-list { display: grid; gap: 14px; }
.publication-item { display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 23px; align-items: start; padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 5px 18px rgba(9,44,63,.04); }
.publication-item.is-hidden { display: none; }
.publication-number { width: 48px; height: 48px; display: grid; place-items: center; color: var(--teal-700); background: #eaf8f8; border-radius: 14px; font-weight: 850; }
.publication-content h3 { font-size: 1.05rem; line-height: 1.5; letter-spacing: -.01em; }
.publication-authors { margin: 9px 0 0; color: var(--muted); font-size: .88rem; }
.publication-venue { margin: 7px 0 0; color: var(--ink-soft); font-size: .86rem; }
.publication-venue strong { color: var(--navy-800); }
.publication-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.publication-tags span { padding: 5px 8px; color: var(--teal-700); background: var(--wash); border-radius: 999px; font-size: .66rem; font-weight: 760; text-transform: uppercase; letter-spacing: .04em; }
.publication-actions { display: flex; gap: 8px; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; color: var(--teal-700); background: #fff; border: 1px solid var(--line); border-radius: 11px; }
.icon-btn:hover { color: #fff; background: var(--teal-700); border-color: var(--teal-700); }
.icon-btn svg { width: 17px; height: 17px; }
.empty-state { display: none; padding: 50px; text-align: center; color: var(--muted); background: #fff; border: 1px dashed #bfd2d8; border-radius: 18px; }
.empty-state.is-visible { display: block; }
.publication-summary { margin-bottom: 25px; color: var(--muted); font-size: .88rem; }

/* About */
.about-profile { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 62px; align-items: start; }
.about-photo { position: sticky; top: 112px; padding: 14px; background: #fff; border: 1px solid var(--line); border-radius: 25px; box-shadow: var(--shadow-md); }
.about-photo img { width: 100%; border-radius: 16px; }
.about-links { display: grid; gap: 9px; margin-top: 18px; }
.about-links a { display: flex; align-items: center; gap: 10px; padding: 11px 12px; color: var(--navy-700); background: var(--wash); border-radius: 11px; font-size: .86rem; font-weight: 700; }
.about-links a:hover { color: var(--teal-700); background: #e8f7f7; }
.about-links svg { width: 17px; height: 17px; }
.bio-copy h2 { margin-bottom: 22px; }
.bio-copy p { margin: 0 0 17px; color: var(--ink-soft); font-size: 1.02rem; }
.bio-highlights { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 31px; }
.bio-highlight { padding: 18px; background: var(--wash); border-radius: 15px; }
.bio-highlight strong { display: block; color: var(--navy-900); font-size: .92rem; }
.bio-highlight span { display: block; margin-top: 7px; color: var(--muted); font-size: .78rem; }
.timeline { position: relative; display: grid; gap: 0; margin-top: 38px; }
.timeline::before { content: ""; position: absolute; left: 19px; top: 12px; bottom: 12px; width: 2px; background: var(--line); }
.timeline-item { position: relative; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 22px; padding: 0 0 32px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: relative; z-index: 1; width: 40px; height: 40px; display: grid; place-items: center; color: #fff; background: var(--teal-600); border: 6px solid var(--wash); border-radius: 50%; font-size: .62rem; font-weight: 850; }
.timeline-content { padding-top: 3px; }
.timeline-content time { color: var(--teal-700); font-size: .75rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.timeline-content h3 { margin-top: 5px; font-size: 1.12rem; }
.timeline-content p { margin: 6px 0 0; color: var(--muted); font-size: .88rem; }
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.project-card { padding: 27px; }
.project-card .project-type { display: inline-block; padding: 5px 8px; color: var(--teal-700); background: #eaf8f8; border-radius: 999px; font-size: .66rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.project-card h3 { margin-top: 18px; font-size: 1.25rem; line-height: 1.4; }
.project-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 15px; color: var(--muted); font-size: .79rem; }
.project-card p { margin: 17px 0 0; color: var(--ink-soft); font-size: .9rem; }
.two-column { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.info-panel { padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: 20px; }
.info-panel h3 { margin-bottom: 20px; }
.info-list { display: grid; gap: 15px; }
.info-list-item { display: grid; grid-template-columns: 30px 1fr; gap: 12px; }
.info-list-item b { width: 30px; height: 30px; display: grid; place-items: center; color: var(--teal-700); background: var(--wash); border-radius: 9px; font-size: .7rem; }
.info-list-item p { margin: 0; color: var(--ink-soft); font-size: .9rem; }
.collaboration-map { padding: 38px; background: linear-gradient(135deg, #fff, var(--wash)); border: 1px solid var(--line); border-radius: 22px; }
.collaboration-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.collaboration-item { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 15px; }
.collaboration-item strong { color: var(--navy-900); }
.collaboration-item p { margin: 9px 0 0; color: var(--muted); font-size: .85rem; }

/* Footer */
.site-footer { padding: 70px 0 28px; color: rgba(255,255,255,.72); background: var(--navy-950); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .7fr .8fr; gap: 56px; padding-bottom: 48px; border-bottom: 1px solid var(--line-dark); }
.footer-brand .brand-text strong { color: #fff; }
.footer-brand .brand-text span { color: rgba(255,255,255,.48); }
.footer-brand p { max-width: 470px; margin: 22px 0 0; color: rgba(255,255,255,.58); }
.footer-col h4 { color: #fff; margin-bottom: 16px; font-size: .9rem; letter-spacing: .06em; text-transform: uppercase; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: rgba(255,255,255,.65); font-size: .88rem; }
.footer-links a:hover { color: var(--cyan-200); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 24px; color: rgba(255,255,255,.42); font-size: .76rem; }

/* Animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* Utilities */
.mt-0 { margin-top: 0 !important; }
.mt-24 { margin-top: 24px !important; }
.mt-40 { margin-top: 40px !important; }
.mt-52 { margin-top: 52px !important; }
.text-center { text-align: center; }
.center-head { max-width: 800px; margin-inline: auto; text-align: center; }
.center-head .section-kicker { justify-content: center; }
.center-head .section-kicker::before { display: none; }
.center-head p { margin: 21px auto 0; color: var(--muted); }
.divider { height: 1px; background: var(--line); }

:focus-visible { outline: 3px solid rgba(11,179,176,.35); outline-offset: 3px; }

@media (max-width: 1080px) {
  .nav-links { position: fixed; left: 20px; right: 20px; top: 92px; display: none; flex-direction: column; align-items: stretch; gap: 3px; padding: 14px; background: rgba(255,255,255,.98); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-md); }
  .nav-links.is-open { display: flex; }
  .nav-link { padding: 13px 14px; }
  .nav-link[aria-current="page"]::after { display: none; }
  .menu-toggle { display: block; }
  .hero-inner { grid-template-columns: 1fr .62fr; gap: 48px; }
  .hero-chip.one { left: -18px; }
  .hero-chip.two { right: -10px; }
  .section-head { grid-template-columns: 1fr; gap: 18px; }
  .research-grid { grid-template-columns: 1fr 1fr; }
  .research-card:last-child { grid-column: 1 / -1; width: calc(50% - 12px); justify-self: center; }
  .concept-inner { grid-template-columns: 1fr; gap: 42px; }
  .theme-detail, .theme-detail.reverse { grid-template-columns: 1fr; gap: 38px; }
  .theme-detail.reverse .theme-copy, .theme-detail.reverse .theme-visual { order: initial; }
  .flagship { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr 1fr; }
  .project-card:last-child { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
  .section { padding: 78px 0; }
  .brand { min-width: auto; }
  .brand-text span { display: none; }
  .hero { min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; padding: 74px 0 78px; }
  .hero-copy { max-width: 100%; }
  .hero h1 { font-size: clamp(3rem, 14vw, 5rem); }
  .hero-visual { justify-self: center; width: min(78vw, 400px); }
  .hero-chip.one { left: -24px; }
  .hero-chip.two { right: -24px; }
  .hero-scroll { display: none; }
  .vision-grid { grid-template-columns: 1fr; }
  .story-flow { grid-template-columns: 1fr; gap: 16px; }
  .story-step:not(:last-child)::after { content: "↓"; right: auto; left: 50%; top: auto; bottom: -23px; transform: translateX(-50%); }
  .research-grid { grid-template-columns: 1fr; }
  .research-card:last-child { grid-column: auto; width: auto; }
  .concept-panel { padding: 42px 28px; }
  .concept-chain { grid-template-columns: 1fr; }
  .concept-arrow { transform: rotate(90deg); }
  .featured-grid { grid-template-columns: 1fr; }
  .pub-row { grid-template-columns: 48px minmax(0, 1fr); }
  .pub-doi { grid-column: 2; justify-self: start; }
  .cta-band { grid-template-columns: 1fr; padding: 38px 30px; }
  .toolbar-grid { grid-template-columns: 1fr; }
  .filter-group { justify-content: flex-start; }
  .publication-toolbar { top: 74px; }
  .publication-item { grid-template-columns: 50px minmax(0, 1fr); }
  .publication-actions { grid-column: 2; }
  .about-profile { grid-template-columns: 1fr; }
  .about-photo { position: static; max-width: 390px; }
  .bio-highlights { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .project-card:last-child { grid-column: auto; }
  .two-column { grid-template-columns: 1fr; }
  .collaboration-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .container, .narrow { width: min(100% - 28px, var(--container)); }
  .nav-wrap { height: 74px; }
  .brand-mark { width: 38px; height: 38px; flex-basis: 38px; }
  .brand-text strong { font-size: .88rem; }
  .nav-links { top: 82px; left: 14px; right: 14px; }
  .lang-toggle { min-width: 44px; padding-inline: 9px; }
  .hero-inner { padding-top: 58px; }
  .hero h1 { font-size: 2.8rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-position { display: grid; }
  .hero-visual { width: min(88vw, 360px); }
  .hero-chip { position: static; margin-top: 10px; }
  .hero-chip.one, .hero-chip.two, .hero-chip.three { display: inline-block; margin-right: 6px; }
  .section { padding: 64px 0; }
  .section-tight { padding: 54px 0; }
  h2 { font-size: 2.25rem; }
  .card-pad, .research-body { padding: 23px; }
  .story-step { padding: 23px; }
  .feature-card { min-height: 335px; padding: 25px; }
  .concept-panel { padding: 34px 22px; border-radius: 22px; }
  .cta-band { padding: 31px 23px; border-radius: 22px; }
  .page-hero { padding: 78px 0 62px; }
  .page-hero h1 { font-size: 2.75rem; }
  .subtheme-grid { grid-template-columns: 1fr; }
  .publication-toolbar { top: 74px; }
  .publication-item { grid-template-columns: 1fr; padding: 22px; }
  .publication-number { width: 42px; height: 42px; }
  .publication-actions { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

@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; }
}