/* =========================================================
   Coastal Engineering & Resilience Lab — site styles
   Palette taken from nautical charts: buff land, pale shoal
   water, sounding blue for links, chart magenta for sites.
   ========================================================= */

:root {
  --paper: #f3f6f7;
  --paper-2: #e6eef2;
  --surface: #ffffff;
  --land: #e9dfc4;
  --land-edge: #b3a071;
  --ink: #0e1f2b;
  --ink-2: #445866;
  --ink-3: #6f8390;
  --rule: #cfdae0;
  --rule-strong: #9fb3bf;
  --depth: #1b5e8e;
  --depth-ink: #ffffff;
  --depth-soft: #d7e7f2;
  --mag: #b0266f;
  --mag-soft: #f6e1ec;
  --figure: #ffffff;
  --shadow: 0 1px 2px rgba(14, 31, 43, .06), 0 8px 24px rgba(14, 31, 43, .06);

  --f-display: "Archivo", "Noto Sans TC", "Helvetica Neue", Arial, sans-serif;
  --f-body: "IBM Plex Sans", "Noto Sans TC", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", "Noto Sans TC", ui-monospace, Menlo, Consolas, monospace;

  --t-xs: .78rem;
  --t-sm: .875rem;
  --t-base: 1rem;
  --t-md: 1.125rem;
  --t-lg: 1.375rem;
  --t-xl: 1.875rem;
  --t-2xl: clamp(2rem, 1.4rem + 2.4vw, 3.1rem);

  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 60px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0c1822;
    --paper-2: #122431;
    --surface: #102030;
    --land: #3b3627;
    --land-edge: #7a6d4a;
    --ink: #e3ebef;
    --ink-2: #a3b5c0;
    --ink-3: #718693;
    --rule: #223847;
    --rule-strong: #35505f;
    --depth: #7db8e8;
    --depth-ink: #0c1822;
    --depth-soft: #173449;
    --mag: #f0649f;
    --mag-soft: #3a1a2b;
    --figure: #f4f6f7;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0c1822;
  --paper-2: #122431;
  --surface: #102030;
  --land: #3b3627;
  --land-edge: #7a6d4a;
  --ink: #e3ebef;
  --ink-2: #a3b5c0;
  --ink-3: #718693;
  --rule: #223847;
  --rule-strong: #35505f;
  --depth: #7db8e8;
  --depth-ink: #0c1822;
  --depth-soft: #173449;
  --mag: #f0649f;
  --mag-soft: #3a1a2b;
  --figure: #f4f6f7;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

/* ---------- language switching ---------- */
.lang-en [data-l="zh"],
.lang-zh [data-l="en"] { display: none !important; }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--t-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.lang-zh body { line-height: 1.75; }
img, video, svg { max-width: 100%; display: block; }
img, video { height: auto; }
a { color: var(--depth); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--mag); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-stretch: 108%;
  line-height: 1.15;
  letter-spacing: -.01em;
  text-wrap: balance;
  margin: 0;
}
.lang-zh h1, .lang-zh h2, .lang-zh h3, .lang-zh h4 { letter-spacing: .02em; line-height: 1.3; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.eyebrow {
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.lang-zh .eyebrow { letter-spacing: .12em; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--surface); padding: 8px 12px; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
  min-width: 0;
}
.brand svg { width: 30px; height: 30px; flex: none; }
.brand-text { display: grid; line-height: 1.15; min-width: 0; }
.brand-name { font-family: var(--f-display); font-weight: 650; font-stretch: 105%; font-size: .98rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand-sub { font-family: var(--f-mono); font-size: .7rem; color: var(--ink-3); letter-spacing: .04em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav { display: flex; gap: 2px; }
.nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: var(--t-sm);
  font-weight: 500;
  padding: 8px 10px;
  border-radius: 6px;
}
.nav a:hover { color: var(--ink); background: var(--paper-2); }
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  padding: 2px;
  flex: none;
}
.lang-toggle button {
  font: 500 .78rem/1 var(--f-mono);
  border: 0;
  background: none;
  color: var(--ink-2);
  padding: 7px 10px;
  border-radius: 999px;
  cursor: pointer;
}
.lang-toggle button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.menu-btn {
  display: none;
  border: 1px solid var(--rule-strong);
  background: none;
  color: var(--ink);
  border-radius: 8px;
  width: 40px; height: 36px;
  cursor: pointer;
  flex: none;
}
.menu-btn svg { width: 18px; height: 18px; margin: auto; }

@media (max-width: 1020px) {
  .menu-btn { display: block; }
  .nav {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 100%;
    flex-direction: column;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    padding: 8px var(--gutter) 16px;
    box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 8px; font-size: var(--t-base); border-bottom: 1px solid var(--rule); border-radius: 0; }
}
@media (max-width: 480px) { .brand-sub { display: none; } }

/* ---------- hero ---------- */
.hero { padding-block: clamp(24px, 4vw, 48px) clamp(32px, 5vw, 64px); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  grid-template-areas: "intro map" "panel map";
  grid-template-rows: auto 1fr;
  gap: 24px clamp(24px, 4vw, 56px);
  align-items: start;
}
.hero-intro { grid-area: intro; }
.hero-map { grid-area: map; display: grid; gap: 12px; }
.hero-panel { grid-area: panel; display: grid; gap: 8px; }
.hero-intro { display: grid; gap: 20px; align-content: start; }
.hero h1 { font-size: var(--t-2xl); font-weight: 680; font-stretch: 112%; }
.lang-zh .hero h1 { font-stretch: 100%; font-weight: 700; }
.hero .pi { font-size: var(--t-md); color: var(--ink-2); }
.hero .pi strong { color: var(--ink); font-weight: 600; }
.hero .lead { font-size: var(--t-md); color: var(--ink-2); max-width: 60ch; }
.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--rule);
}
.fact { padding: 12px 12px 12px 0; display: grid; gap: 2px; }
.fact + .fact { padding-left: 14px; border-left: 1px solid var(--rule); }
.fact b { font-family: var(--f-mono); font-size: var(--t-xl); font-weight: 500; line-height: 1.1; font-variant-numeric: tabular-nums; }
.fact span { font-size: var(--t-xs); color: var(--ink-3); line-height: 1.35; }

/* site detail panel */
.site-panel {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 18px 20px 20px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 12px;
}
.site-panel-head { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.site-num {
  font: 600 .8rem/1 var(--f-mono);
  color: #fff;
  background: var(--mag);
  width: 24px; height: 24px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  flex: none;
  align-self: center;
}
.site-num.is-lab { border-radius: 4px; background: var(--depth); color: var(--depth-ink); }
.site-panel h2 { font-size: var(--t-lg); font-weight: 650; }
.site-coord { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--ink-3); margin-left: auto; }
.site-focus { color: var(--ink-2); }
.site-work { list-style: none; display: grid; gap: 0; border-top: 1px solid var(--rule); }
.site-work li { display: grid; grid-template-columns: 7.5em minmax(0, 1fr); gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--rule); font-size: var(--t-sm); }
.site-work .when { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--ink-3); padding-top: 2px; font-variant-numeric: tabular-nums; }
.site-link { font-size: var(--t-sm); font-weight: 500; }
.site-hint { font-size: var(--t-xs); color: var(--ink-3); }

/* map */
.map-card {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
}
.chart { width: 100%; height: auto; }
.chart .sea { fill: var(--paper-2); }
.chart .grat path { fill: none; stroke: var(--rule-strong); stroke-width: .6; stroke-dasharray: 2 4; opacity: .8; }
.chart .grat-lab text, .chart .scalebar text, .chart .north text, .chart .inset-lab {
  font-family: var(--f-mono); font-size: 10px; fill: var(--ink-3);
}
.chart .land { fill: var(--land); stroke: var(--land-edge); stroke-width: .8; stroke-linejoin: round; }
.chart .sea-lab text { font-family: var(--f-mono); font-size: 10px; letter-spacing: .3em; fill: var(--ink-3); opacity: .75; }
.chart .scalebar path { fill: none; stroke: var(--ink-2); stroke-width: 1.2; }
.chart .north path { fill: var(--ink-2); }
.chart .inset-frame { fill: var(--paper-2); stroke: var(--rule-strong); stroke-width: 1; }
.chart .pin { cursor: pointer; outline: none; }
.chart .pin .pin-shape { fill: var(--mag); stroke: var(--paper-2); stroke-width: 2; transition: transform .15s; }
.chart .pin-lab .pin-shape { fill: var(--depth); }
.chart .pin text { font-family: var(--f-mono); font-size: 10px; font-weight: 600; fill: #fff; pointer-events: none; }
.chart .pin-lab text { fill: var(--depth-ink); }
.chart .pin-halo { fill: none; stroke: var(--mag); stroke-width: 1.5; opacity: 0; }
.chart .pin-lab .pin-halo { stroke: var(--depth); }
.chart .pin:hover .pin-halo, .chart .pin:focus-visible .pin-halo { opacity: .45; }
.chart .pin.active .pin-halo { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .chart .pin.active .pin-halo { animation: ping 2.4s ease-out infinite; transform-box: fill-box; transform-origin: center; }
  @keyframes ping { 0% { transform: scale(.7); opacity: 1; } 70% { transform: scale(1.35); opacity: 0; } 100% { opacity: 0; } }
}
.map-caption { display: flex; gap: 16px; flex-wrap: wrap; padding: 10px 14px; border-top: 1px solid var(--rule); font-size: var(--t-xs); color: var(--ink-3); background: var(--paper); }
.legend-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--mag); vertical-align: -1px; margin-right: 6px; }
.legend-sq { display: inline-block; width: 10px; height: 10px; border-radius: 2px; background: var(--depth); vertical-align: -1px; margin-right: 6px; }

.site-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.site-chips button {
  font: 500 var(--t-xs)/1 var(--f-body);
  border: 1px solid var(--rule-strong);
  background: var(--surface);
  color: var(--ink-2);
  border-radius: 999px;
  padding: 7px 10px 7px 7px;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
}
.site-chips button .mono { font-size: .7rem; color: var(--mag); font-weight: 600; min-width: 1.3em; text-align: center; }
.site-chips button[aria-pressed="true"] { border-color: var(--mag); color: var(--ink); background: var(--mag-soft); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "intro" "map" "panel"; grid-template-rows: auto; }
}

/* ---------- sections ---------- */
.section { padding-block: clamp(48px, 7vw, 96px); border-top: 1px solid var(--rule); }
.section-head { display: grid; gap: 10px; margin-bottom: clamp(28px, 4vw, 48px); max-width: 760px; }
.section-head h2 { font-size: var(--t-xl); font-weight: 650; }
.section-head p { color: var(--ink-2); font-size: var(--t-md); }

/* approach */
.approach { background: var(--paper-2); }
.approach-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.approach-thesis h2 { font-size: var(--t-xl); font-weight: 650; margin-block: 10px 14px; }
.approach-thesis p { color: var(--ink-2); }
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; counter-reset: step; }
.steps li { position: relative; padding: 16px 16px 4px 0; border-top: 2px solid var(--depth); display: grid; gap: 6px; align-content: start; }
.steps li + li { padding-left: 16px; }
.steps li::before {
  counter-increment: step;
  content: "0" counter(step);
  font: 500 var(--t-xs)/1 var(--f-mono);
  color: var(--depth);
}
.steps li:not(:last-child)::after {
  content: "";
  position: absolute; right: -5px; top: -6px;
  width: 10px; height: 10px;
  border-top: 2px solid var(--depth); border-right: 2px solid var(--depth);
  transform: rotate(45deg);
  background: var(--paper-2);
}
.steps h3 { font-size: var(--t-md); font-weight: 650; }
.steps p { font-size: var(--t-sm); color: var(--ink-2); }
@media (max-width: 900px) {
  .approach-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .steps { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); row-gap: 20px; }
  .steps li:nth-child(3) { padding-left: 0; }
  .steps li:nth-child(2)::after { display: none; }
}

/* research index */
.theme-index { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin-bottom: clamp(40px, 6vw, 72px); list-style: none; }
.theme-index a {
  display: grid; gap: 8px; align-content: start;
  height: 100%;
  padding: 16px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--surface);
  text-decoration: none;
  color: var(--ink);
}
.theme-index a:hover { border-color: var(--depth); }
.theme-index .key { font: 600 var(--t-xs)/1 var(--f-mono); color: var(--depth); letter-spacing: .06em; }
.theme-index strong { font-family: var(--f-display); font-weight: 650; font-size: var(--t-base); line-height: 1.25; }
.theme-index span:last-child { font-size: var(--t-xs); color: var(--ink-3); line-height: 1.45; }
@media (max-width: 1020px) { .theme-index { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 620px) { .theme-index { grid-template-columns: minmax(0, 1fr); } }

/* research theme block */
.theme { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); padding-block: clamp(36px, 5vw, 64px); border-top: 1px solid var(--rule); }
.theme:first-of-type { border-top: 0; padding-top: 0; }
.theme-side { display: grid; gap: 14px; align-content: start; position: sticky; top: calc(var(--header-h) + 24px); }
.theme-side h3 { font-size: var(--t-lg); font-weight: 650; }
.theme-side p { color: var(--ink-2); font-size: var(--t-sm); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; }
.tags li { font-size: .74rem; border: 1px solid var(--rule-strong); color: var(--ink-2); padding: 3px 8px; border-radius: 4px; }
.theme-refs { font-size: var(--t-xs); color: var(--ink-3); display: grid; gap: 4px; }
.theme-refs a { color: var(--ink-2); }
.theme-main { display: grid; gap: clamp(32px, 4vw, 48px); min-width: 0; }
@media (max-width: 900px) {
  .theme { grid-template-columns: minmax(0, 1fr); }
  .theme-side { position: static; }
}

/* case study */
.case { display: grid; gap: 16px; min-width: 0; }
.case-head { display: grid; gap: 4px; }
.case-head h4 { font-size: var(--t-md); font-weight: 650; }
.case-body { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.case-body.flip { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); }
.case-body.wide { grid-template-columns: minmax(0, 1fr); }
@media (max-width: 760px) { .case-body, .case-body.flip { grid-template-columns: minmax(0, 1fr); } }
.findings { list-style: none; display: grid; gap: 10px; font-size: var(--t-sm); color: var(--ink-2); }
.findings li { padding-left: 16px; position: relative; }
.findings li::before { content: ""; position: absolute; left: 0; top: .72em; width: 7px; height: 1.5px; background: var(--depth); }
.findings b { color: var(--ink); font-weight: 600; }
.datum { display: flex; gap: 10px; flex-wrap: wrap; }
.datum div { border-left: 2px solid var(--mag); padding: 2px 0 2px 10px; display: grid; }
.datum b { font-family: var(--f-mono); font-size: var(--t-lg); font-weight: 500; line-height: 1.2; font-variant-numeric: tabular-nums; }
.datum span { font-size: var(--t-xs); color: var(--ink-3); }

/* figures */
.fig { margin: 0; display: grid; gap: 8px; min-width: 0; }
.fig .frame { background: var(--figure); border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.fig .frame.pad { padding: 10px; }
.fig img, .fig video { width: 100%; height: auto; }
.fig figcaption { font-family: var(--f-mono); font-size: .72rem; line-height: 1.5; color: var(--ink-3); }
.fig figcaption b { color: var(--ink-2); font-weight: 600; }
.fig-grid { display: grid; gap: 10px; align-items: start; }
.fig-grid.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.fig-grid.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.fig-grid.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 620px) { .fig-grid.g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .fig-grid.g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.panel-label { font: 500 .7rem/1 var(--f-mono); color: var(--ink-2); display: flex; justify-content: space-between; gap: 6px; }
.panel-label .season { color: var(--depth); }
.photo .frame { background: var(--paper-2); }
.photo img { aspect-ratio: 4 / 3; object-fit: cover; }

/* table (risk levels, wind tunnel specs) */
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: var(--t-sm); }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
th { font-family: var(--f-mono); font-size: .72rem; font-weight: 500; color: var(--ink-3); letter-spacing: .04em; text-transform: uppercase; background: var(--paper); }
.lang-zh th { text-transform: none; }
td.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.lvl { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; white-space: nowrap; }
.lvl::before { content: ""; width: 10px; height: 10px; border-radius: 2px; background: var(--c); }

/* projects */
.controls { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; margin-bottom: 16px; }
.seg { display: inline-flex; border: 1px solid var(--rule-strong); border-radius: 8px; padding: 2px; background: var(--surface); }
.seg button { font: 500 var(--t-sm)/1 var(--f-body); border: 0; background: none; color: var(--ink-2); padding: 8px 12px; border-radius: 6px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.seg button .mono { font-size: .72rem; opacity: .75; margin-left: 4px; }
.select-wrap { display: inline-flex; align-items: center; gap: 8px; font-size: var(--t-sm); color: var(--ink-3); }
select {
  font: 500 var(--t-sm)/1.2 var(--f-body);
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: 8px;
  padding: 8px 10px;
}
.count { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--ink-3); margin-left: auto; }
.proj-list { list-style: none; border-top: 1px solid var(--ink); }
.proj {
  display: grid;
  grid-template-columns: 8.5em minmax(0, 1fr) auto;
  gap: 6px 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.proj .when { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.proj .ttl { font-weight: 500; line-height: 1.45; }
.proj .agency { grid-column: 2; font-size: var(--t-xs); color: var(--ink-3); }
.proj .badges { grid-row: 1; grid-column: 3; display: flex; gap: 6px; }
.badge { font: 500 .68rem/1 var(--f-mono); padding: 4px 7px; border-radius: 4px; border: 1px solid var(--rule-strong); color: var(--ink-2); white-space: nowrap; letter-spacing: .03em; }
.badge.nstc { border-color: var(--depth); color: var(--depth); }
.badge.pi { background: var(--depth); color: var(--depth-ink); border-color: var(--depth); }
@media (max-width: 700px) {
  .proj { grid-template-columns: minmax(0, 1fr); }
  .proj .agency { grid-column: 1; }
  .proj .badges { grid-row: auto; grid-column: 1; }
}
.more { margin-top: 18px; }
.btn {
  font: 500 var(--t-sm)/1 var(--f-body);
  border: 1px solid var(--ink);
  background: var(--surface);
  color: var(--ink);
  padding: 11px 16px;
  border-radius: 8px;
  cursor: pointer;
}
.btn:hover { background: var(--ink); color: var(--paper); }

/* publications */
.pub-group + .pub-group { margin-top: 48px; }
.pub-group h3 { font-size: var(--t-md); font-weight: 650; margin-bottom: 12px; display: flex; gap: 12px; align-items: baseline; }
.pub-group h3 .mono { font-size: var(--t-xs); color: var(--ink-3); font-weight: 400; }
.pubs { list-style: none; border-top: 1px solid var(--ink); }
.pub { display: grid; grid-template-columns: 4em minmax(0, 1fr); gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
.pub .yr { font-family: var(--f-mono); font-size: var(--t-sm); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.pub .t { font-weight: 500; line-height: 1.45; }
.pub .a { font-size: var(--t-sm); color: var(--ink-2); margin-top: 3px; }
.pub .a .me { color: var(--ink); font-weight: 600; }
.pub .j { font-size: var(--t-sm); color: var(--ink-2); margin-top: 2px; }
.pub .j i { color: var(--ink); }
.pub .meta { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 6px; font-size: var(--t-xs); }
.pub .meta a { font-family: var(--f-mono); }
.pub .corr { color: var(--mag); font-family: var(--f-mono); font-size: .7rem; }
@media (max-width: 560px) { .pub { grid-template-columns: minmax(0, 1fr); gap: 4px; } }
.note { font-size: var(--t-xs); color: var(--ink-3); margin-top: 14px; }

/* facilities */
.facility { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); padding-block: clamp(28px, 4vw, 48px); border-top: 1px solid var(--rule); }
.facility:first-of-type { border-top: 0; padding-top: 0; }
.facility-side { display: grid; gap: 12px; align-content: start; }
.facility-side h3 { font-size: var(--t-lg); font-weight: 650; }
.facility-side p { color: var(--ink-2); font-size: var(--t-sm); }
.spec { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0 14px; font-size: var(--t-sm); border-top: 1px solid var(--rule); }
.spec dt, .spec dd { margin: 0; padding: 7px 0; border-bottom: 1px solid var(--rule); }
.spec dt { color: var(--ink-3); font-size: var(--t-xs); padding-top: 9px; }
.spec dd { font-family: var(--f-mono); font-size: .82rem; font-variant-numeric: tabular-nums; }
@media (max-width: 900px) { .facility { grid-template-columns: minmax(0, 1fr); } }

/* people */
.pi-grid { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.pi-card { display: grid; gap: 14px; position: sticky; top: calc(var(--header-h) + 24px); }
.pi-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: 50% 40%; border-radius: 10px; border: 1px solid var(--rule); }
.pi-card h3 { font-size: var(--t-xl); font-weight: 650; }
.pi-card .role { color: var(--ink-2); font-size: var(--t-sm); }
.contact-list { display: grid; gap: 0; font-size: var(--t-sm); border-top: 1px solid var(--rule); }
.contact-list div { display: grid; grid-template-columns: 4.5em minmax(0, 1fr); gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--rule); }
.contact-list dt { color: var(--ink-3); font-size: var(--t-xs); padding-top: 2px; }
.contact-list dd { margin: 0; overflow-wrap: anywhere; }
.copy { font: 500 .68rem/1 var(--f-mono); border: 1px solid var(--rule-strong); background: var(--surface); color: var(--ink-2); border-radius: 4px; padding: 4px 6px; margin-left: 6px; cursor: pointer; vertical-align: 1px; }
.cv { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 40px; }
.cv-block { display: grid; gap: 10px; align-content: start; }
.cv-block.full { grid-column: 1 / -1; }
.cv-block h4 { font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); padding-bottom: 8px; border-bottom: 1px solid var(--ink); }
.lang-zh .cv-block h4 { text-transform: none; letter-spacing: .12em; }
.timeline { list-style: none; display: grid; }
.timeline li { display: grid; grid-template-columns: 7.2em minmax(0, 1fr); gap: 14px; padding: 8px 0; border-bottom: 1px solid var(--rule); font-size: var(--t-sm); }
.timeline .when { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--ink-3); padding-top: 2px; font-variant-numeric: tabular-nums; }
.timeline .org { color: var(--ink-3); display: block; font-size: var(--t-xs); }
.plain { list-style: none; display: grid; }
.plain li { padding: 8px 0; border-bottom: 1px solid var(--rule); font-size: var(--t-sm); }
.expertise { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; }
.expertise li { font-size: var(--t-sm); background: var(--depth-soft); color: var(--ink); padding: 5px 10px; border-radius: 4px; }
@media (max-width: 900px) {
  .pi-grid { grid-template-columns: minmax(0, 1fr); }
  .pi-card { position: static; grid-template-columns: minmax(0, 200px) minmax(0, 1fr); align-items: start; }
  .pi-card img { grid-row: span 3; }
}
@media (max-width: 560px) {
  .pi-card { grid-template-columns: minmax(0, 1fr); }
  .cv { grid-template-columns: minmax(0, 1fr); }
}

/* join */
.join { background: var(--ink); color: var(--paper); border-top: 0; }
.join .eyebrow { color: color-mix(in srgb, var(--paper) 60%, var(--ink)); }
.join .section-head p { color: color-mix(in srgb, var(--paper) 78%, var(--ink)); }
.join-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid color-mix(in srgb, var(--paper) 25%, var(--ink)); }
.join-grid > div { padding: 18px 18px 18px 0; display: grid; gap: 8px; align-content: start; }
.join-grid > div + div { padding-left: 18px; border-left: 1px solid color-mix(in srgb, var(--paper) 25%, var(--ink)); }
.join-grid h3 { font-size: var(--t-md); font-weight: 650; }
.join-grid p { font-size: var(--t-sm); color: color-mix(in srgb, var(--paper) 75%, var(--ink)); }
.join-grid a { color: var(--paper); }
.join-cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: baseline; }
.join-cta .mono { font-size: var(--t-md); }
.join .copy { background: transparent; color: var(--paper); border-color: color-mix(in srgb, var(--paper) 40%, var(--ink)); }
@media (max-width: 900px) {
  .join-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .join-grid > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .join-grid > div:nth-child(n+3) { border-top: 1px solid color-mix(in srgb, var(--paper) 25%, var(--ink)); }
}
@media (max-width: 560px) {
  .join-grid { grid-template-columns: minmax(0, 1fr); }
  .join-grid > div, .join-grid > div + div { padding-left: 0; border-left: 0; }
  .join-grid > div + div { border-top: 1px solid color-mix(in srgb, var(--paper) 25%, var(--ink)); }
}

/* footer */
.site-footer { padding-block: 40px 48px; border-top: 1px solid var(--rule); font-size: var(--t-sm); color: var(--ink-2); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); gap: 24px 40px; }
.footer-grid h4 { font-family: var(--f-mono); font-size: var(--t-xs); font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 8px; }
.footer-grid address { font-style: normal; }
.footer-bottom { margin-top: 28px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: var(--t-xs); color: var(--ink-3); }
@media (max-width: 760px) { .footer-grid { grid-template-columns: minmax(0, 1fr); } }
.case-text { color: var(--ink-2); font-size: var(--t-sm); max-width: 75ch; }
.chart .grat-lab text, .chart .sea-lab text, .chart .scalebar text { paint-order: stroke; stroke: var(--paper-2); stroke-width: 3px; stroke-linejoin: round; }