/* =========================================================
   Naixu Guo — homepage
   Editorial academic. Warm paper. One accent.
   ========================================================= */

:root {
  /* Type */
  --f-display: "Bodoni 72", "Bodoni 72 Oldstyle", "Bodoni Moda", Georgia, serif;
  --f-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  /* Light palette — warm paper */
  --paper: #f4f0e8;
  --paper-2: #ece6d8;
  --ink: #1a1814;
  --ink-2: #3d3933;
  --muted: #6b665c;
  --muted-2: #8f8a7e;
  --hairline: #d6cfbf;
  --hairline-soft: #e3ddcd;
  --accent: oklch(0.55 0.12 40);
  --accent-soft: oklch(0.55 0.12 40 / 0.10);
  --accent-ink: oklch(0.42 0.10 40);

  /* Numbers */
  --radius: 4px;
  --gutter: clamp(24px, 4vw, 56px);
  --maxw: 1180px;
  --maxw-narrow: 860px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #13120e;
    --paper-2: #1a1813;
    --ink: #ece8de;
    --ink-2: #c9c4b6;
    --muted: #8a857a;
    --muted-2: #6b665d;
    --hairline: #2a2720;
    --hairline-soft: #1f1d18;
    --accent: oklch(0.74 0.13 50);
    --accent-soft: oklch(0.74 0.13 50 / 0.14);
    --accent-ink: oklch(0.82 0.12 55);
  }
}

[data-theme="light"] {
  --paper: #f4f0e8;
  --paper-2: #ece6d8;
  --ink: #1a1814;
  --ink-2: #3d3933;
  --muted: #6b665c;
  --muted-2: #8f8a7e;
  --hairline: #d6cfbf;
  --hairline-soft: #e3ddcd;
  --accent: oklch(0.55 0.12 40);
  --accent-soft: oklch(0.55 0.12 40 / 0.10);
  --accent-ink: oklch(0.42 0.10 40);
}
[data-theme="dark"] {
  --paper: #13120e;
  --paper-2: #1a1813;
  --ink: #f1ede2;
  --ink-2: #dbd6c8;
  --muted: #95907f;
  --muted-2: #6b665d;
  --hairline: #2a2720;
  --hairline-soft: #1f1d18;
  --accent: oklch(0.74 0.13 50);
  --accent-soft: oklch(0.74 0.13 50 / 0.14);
  --accent-ink: oklch(0.82 0.12 55);
}

/* ---------------- base ---------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }

::selection { background: var(--accent-soft); color: var(--accent-ink); }

/* paper texture overlay — extremely subtle */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1200px 600px at 80% -20%, var(--accent-soft), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, var(--accent-soft), transparent 60%);
  opacity: 0.5;
}

#root { position: relative; z-index: 1; }

/* ---------------- container ---------------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container--narrow { max-width: var(--maxw-narrow); }

/* ---------------- nav ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in oklab, var(--paper) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms var(--ease), background 240ms var(--ease);
}
.nav--scrolled { border-bottom-color: var(--hairline); }

.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px;
}
.nav__brand {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.nav__brand-zh {
  font-family: var(--f-body);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.nav__links {
  display: flex; gap: 28px;
  list-style: none; padding: 0; margin: 0;
  font-size: 14px;
  font-weight: 450;
}
.nav__links a {
  position: relative;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color 200ms var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 2px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 280ms var(--ease);
}
.nav__links a:hover::after { transform: scaleX(1); }
.nav__links a.active { color: var(--ink); }
.nav__links a.active::after { transform: scaleX(1); }

.nav__theme {
  font-size: 12px;
  font-family: var(--f-mono);
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}
.nav__theme:hover { color: var(--ink); border-color: var(--ink-2); }

/* mobile menu toggle */
.nav__toggle { display: none; }

@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__theme { display: none; }
  .nav__toggle {
    display: flex; flex-direction: column; gap: 5px;
    width: 28px; height: 28px;
    align-items: center; justify-content: center;
  }
  .nav__toggle span { width: 18px; height: 1px; background: var(--ink); transition: transform 240ms var(--ease); }
  .nav--open .nav__toggle span:first-child { transform: translateY(3px) rotate(45deg); }
  .nav--open .nav__toggle span:last-child { transform: translateY(-3px) rotate(-45deg); }
  .nav--open .nav__mobile { display: flex; }
  .nav__mobile {
    display: none;
    flex-direction: column;
    border-top: 1px solid var(--hairline);
    padding: 16px var(--gutter) 24px;
  }
  .nav__mobile a { padding: 12px 0; border-bottom: 1px solid var(--hairline-soft); }
}
@media (min-width: 721px) {
  .nav__mobile { display: none; }
}

/* ---------------- main ---------------- */
main { min-height: 60vh; }

/* ---------------- hero ---------------- */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 64px 0 88px;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
}
@media (max-width: 720px) { .hero { padding: 32px 0 56px; min-height: 0; } }

.hero > .container { position: relative; z-index: 2; width: 100%; }

/* (no hero background decoration) */

/* top editorial slug */
.hero__slug {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 64px;
}
.hero__slug-left { display: flex; align-items: center; gap: 14px; min-width: 0; }
.hero__slug-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  animation: pulse 2.4s var(--ease) infinite;
  flex-shrink: 0;
}
.hero__slug-right { color: var(--muted-2); white-space: nowrap; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--accent-soft); }
  50% { box-shadow: 0 0 0 9px transparent; }
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 88px);
  align-items: start;
}
@media (max-width: 880px) {
  .hero__grid { grid-template-columns: 1fr; gap: 56px; }
}

/* LEFT — typographic anchor */
.hero__left { min-width: 0; }

.hero__name {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(48px, 7.5vw, 104px);
  line-height: 0.94;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  color: var(--ink);
  font-variation-settings: "opsz" 60;
}
.hero__name-row { display: block; }
.hero__name-row + .hero__name-row { margin-left: clamp(28px, 4.5vw, 64px); }
.hero__name em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent-ink);
  font-variation-settings: "opsz" 72;
}

.hero__zh {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(16px, 1.6vw, 19px);
  letter-spacing: 0.2em;
  color: var(--muted);
  margin: 0 0 40px;
  padding-left: clamp(4px, 1vw, 8px);
}
.hero__zh::before {
  content: "—";
  margin-right: 14px;
  color: var(--accent);
  letter-spacing: 0;
}

.hero__tagline {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.3;
  color: var(--ink-2);
  margin: 0 0 36px;
  max-width: 26ch;
  letter-spacing: -0.005em;
  font-variation-settings: "opsz" 18;
}

.hero__meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 14px 28px;
  margin-bottom: 36px;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 56ch;
}
@media (max-width: 480px) {
  .hero__meta { grid-template-columns: 1fr; gap: 4px; }
  .hero__meta > dt + dd { margin-bottom: 12px; }
}
.hero__meta dt {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 3px;
  white-space: nowrap;
}
.hero__meta dd { margin: 0; color: var(--ink-2); }
.hero__meta dd strong { color: var(--ink); font-weight: 500; }
.hero__meta-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero__meta-list li {
  position: relative;
  padding-left: 16px;
}
.hero__meta-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
}
.hero__cta a {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding: 12px 26px 12px 0;
  margin-right: 26px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: color 200ms var(--ease), gap 200ms var(--ease);
}
.hero__cta a::after {
  content: "→";
  font-family: var(--f-display);
  font-size: 14px;
  letter-spacing: 0;
  color: var(--muted);
  transition: color 200ms var(--ease), transform 200ms var(--ease);
}
.hero__cta a:hover { color: var(--accent-ink); gap: 14px; }
.hero__cta a:hover::after { color: var(--accent); transform: translateX(3px); }

/* RIGHT — portrait */
.hero__media {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.hero__plate {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero__plate-num { color: var(--accent-ink); font-weight: 500; }

.hero__portrait-wrap {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--paper-2);
  border: 1px solid var(--hairline);
}
.hero__portrait {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.15) contrast(1.02);
  transition: filter 700ms var(--ease), transform 900ms var(--ease);
}
.hero__portrait-wrap:hover .hero__portrait {
  filter: grayscale(0) contrast(1.06);
  transform: scale(1.025);
}

.hero__caption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 12px;
  border-top: 1px solid var(--hairline-soft);
}
.hero__caption strong {
  font-family: var(--f-body);
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  color: var(--ink);
  font-size: 13px;
}

/* ---------------- section frames ---------------- */
.section {
  padding: 80px 0;
  position: relative;
}
.section + .section { border-top: 1px solid var(--hairline-soft); }
.section--first { padding-top: 56px; padding-bottom: 64px; }
@media (max-width: 720px) {
  .section { padding: 56px 0; }
  .section--first { padding-top: 36px; padding-bottom: 48px; }
}

.section__head {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: clamp(40px, 6vw, 80px);
  margin-bottom: 48px;
  align-items: start;
}
.section__head--compact { margin-bottom: 24px; }
@media (max-width: 880px) {
  .section__head { grid-template-columns: 1fr; gap: 16px; margin-bottom: 28px; }
}
.section__kicker {
  font-family: var(--f-mono);
  font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex; align-items: center; gap: 12px;
}
.section__kicker::before {
  content: "";
  width: 24px; height: 1px;
  background: var(--accent);
}
.section__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  color: var(--ink);
}
.section__lead {
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0;
  max-width: 60ch;
}

/* about block — single column editorial */
.about {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}
@media (max-width: 720px) { .about { grid-template-columns: 1fr; gap: 20px; } }

.about__rail {
  display: flex; flex-direction: column; gap: 18px;
  position: sticky; top: 96px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
@media (max-width: 720px) { .about__rail { position: static; } }
.about__rail-label { color: var(--ink); }
.about__rail-fig { color: var(--accent-ink); }
.about__rail-sep {
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.about__body { max-width: 64ch; }

.about__lede {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.45;
  letter-spacing: -0.008em;
  color: var(--ink);
  margin: 0 0 28px;
  text-wrap: pretty;
  font-variation-settings: "opsz" 24;
}

.about__body p.about__para {
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 16px;
  text-wrap: pretty;
}
.about__body p.about__para:last-of-type { margin-bottom: 0; }
.about__body p.about__para strong { color: var(--ink); font-weight: 500; }

.about__facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 40px 0 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
@media (max-width: 880px) {
  .about__facts { grid-template-columns: repeat(2, 1fr); }
}
.about__fact {
  padding: 18px 16px 18px 0;
  border-right: 1px solid var(--hairline-soft);
  display: flex; flex-direction: column; gap: 3px;
}
@media (max-width: 880px) {
  .about__fact:nth-child(2n) { border-right: 0; padding-right: 0; }
  .about__fact:nth-child(-n+2) { border-bottom: 1px solid var(--hairline-soft); }
}
@media (min-width: 881px) {
  .about__fact:last-child { border-right: 0; padding-right: 0; }
}
.about__fact span {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.about__fact strong {
  font-family: var(--f-body);
  font-weight: 500;
  font-size: 14.5px;
  color: var(--ink);
  line-height: 1.3;
}
.about__fact em {
  font-style: normal;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--muted-2);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

/* interests row — labeled inline, bottom-of-about */
.about__interests {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 28px;
  margin-top: 28px;
  padding-top: 24px;
  align-items: start;
}
@media (max-width: 720px) {
  .about__interests { grid-template-columns: 1fr; gap: 8px; }
}
.about__interests-label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 3px;
}
.about__interests-list {
  display: flex; flex-wrap: wrap;
  gap: 6px 0;
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.6;
  margin: 0;
}
.about__interests-list span:not(:last-child)::after {
  content: "·";
  margin: 0 12px;
  color: var(--muted);
}

.about__more {
  display: flex; flex-wrap: wrap; gap: 22px;
  margin-top: 32px;
}
.about__more .more { margin-top: 0; }

/* ---------------- research directions ---------------- */
.directions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--hairline);
}
.direction {
  display: grid;
  grid-template-columns: 80px 1fr 1.4fr;
  gap: 40px;
  padding: 36px 0;
  border-bottom: 1px solid var(--hairline);
  align-items: start;
  transition: background 240ms var(--ease);
}
.direction:hover { background: color-mix(in oklab, var(--paper-2) 50%, transparent); }
@media (max-width: 720px) {
  .direction { grid-template-columns: 1fr; gap: 14px; padding: 28px 0; }
}
.direction__num {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 36px;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
}
.direction__head h3 {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 26px;
  letter-spacing: -0.015em;
  margin: 0 0 10px;
  line-height: 1.15;
}
.direction__keywords {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0;
}
.direction__body p {
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 0 18px;
  max-width: 56ch;
}
.direction__reps {
  display: flex; flex-direction: column; gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--hairline-soft);
}
.direction__rep {
  display: flex; justify-content: space-between; gap: 16px;
  font-size: 14px;
  color: var(--ink);
}
.direction__rep a {
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 1px;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}
.direction__rep a:hover { border-bottom-color: var(--accent); color: var(--accent-ink); }
.direction__rep-venue {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ---------------- selected works ---------------- */
.works {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hairline);
}
.work {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.6fr) 40px;
  gap: 32px;
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--hairline);
  transition: padding-left 280ms var(--ease);
}
.work:hover { padding-left: 12px; }
@media (max-width: 720px) {
  .work { grid-template-columns: 1fr 32px; gap: 16px; padding: 18px 0; }
  .work__mapping { grid-column: 1 / -1; margin-top: 6px; }
}
.work__title {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.012em;
  margin: 0;
  line-height: 1.2;
}
.work__title a {
  transition: color 200ms var(--ease);
}
.work:hover .work__title a { color: var(--accent-ink); }
.work__mapping {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.work__mapping strong {
  color: var(--ink-2);
  font-weight: 500;
}
.work__arrow {
  font-family: var(--f-display);
  font-size: 22px;
  color: var(--muted);
  text-align: right;
  transition: transform 280ms var(--ease), color 280ms var(--ease);
}
.work:hover .work__arrow {
  transform: translateX(8px);
  color: var(--accent-ink);
}

/* ---------------- updates / news ---------------- */
.updates {
  display: grid;
  gap: 0;
}
.update {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 32px;
  padding: 18px 0;
  border-top: 1px solid var(--hairline-soft);
  align-items: baseline;
}
.update:first-child { border-top: 1px solid var(--hairline); }
@media (max-width: 720px) {
  .update { grid-template-columns: 1fr; gap: 4px; padding: 16px 0; }
}
.update__date {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}
.update__body {
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink-2);
  text-wrap: pretty;
}
.update__body a {
  border-bottom: 1px solid var(--hairline);
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}
.update__body a:hover { border-bottom-color: var(--accent); color: var(--accent-ink); }
.update__body strong { color: var(--ink); font-weight: 500; }
.update__venue {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent-ink);
  background: var(--accent-soft);
  padding: 2px 7px;
  border-radius: 3px;
  margin-right: 8px;
  vertical-align: 2px;
}

/* "view all" link */
.more {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 28px;
  font-family: var(--f-mono);
  font-size: 12px; letter-spacing: 0.08em;
  color: var(--ink);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 2px;
  transition: border-color 200ms var(--ease), color 200ms var(--ease), gap 200ms var(--ease);
}
.more:hover { border-bottom-color: var(--accent); color: var(--accent-ink); gap: 14px; }

/* ---------------- contact ---------------- */
.contact {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 720px) { .contact { grid-template-columns: 1fr; gap: 20px; } }
.contact__big {
  font-family: var(--f-display);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 28px;
  max-width: 32ch;
  text-wrap: balance;
}
.contact__links {
  display: flex; flex-wrap: wrap; gap: 0;
}
.contact__link {
  font-family: var(--f-mono);
  font-size: 12px; letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px 22px 10px 0;
  margin-right: 22px;
  border-bottom: 1px solid var(--hairline);
  color: var(--ink-2);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.contact__link:hover { color: var(--accent-ink); border-bottom-color: var(--accent); }

/* ---------------- footer ---------------- */
.footer {
  border-top: 1px solid var(--hairline);
  padding: 36px 0 48px;
  margin-top: 48px;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.footer__inner strong {
  font-family: var(--f-body);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0;
  color: var(--ink-2);
}

/* ---------------- page intro (subpages) ---------------- */
.page-intro {
  padding: 80px 0 56px;
  border-bottom: 1px solid var(--hairline);
}
.page-intro__grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 720px) { .page-intro__grid { grid-template-columns: 1fr; gap: 12px; } }
.page-intro__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
}
.page-intro__lead {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
  color: var(--ink-2);
  margin: 0;
  max-width: 36ch;
  text-wrap: pretty;
}

/* ---------------- publications — single list with figures ---------------- */
.pub-links {
  display: flex; gap: 18px; flex-wrap: wrap;
  font-family: var(--f-mono);
  font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase;
}
.pub-links a {
  color: var(--ink);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 1px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.pub-links a:hover { color: var(--accent-ink); border-bottom-color: var(--accent); }

.pub-year {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 48px;
  border-top: 1px solid var(--hairline);
  padding-top: 28px;
  margin-top: 36px;
}
.pub-year:first-child { margin-top: 0; }
@media (max-width: 720px) { .pub-year { grid-template-columns: 1fr; gap: 12px; } }
.pub-year__num {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 44px;
  font-style: italic;
  color: var(--accent-ink);
  line-height: 1;
  position: sticky;
  top: 96px;
  align-self: start;
}
@media (max-width: 720px) { .pub-year__num { position: static; } }
.pub-year__items {
  display: grid;
  gap: 0;
}

.pub-card {
  display: grid;
  grid-template-columns: clamp(260px, 28vw, 320px) minmax(0, 1fr);
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--hairline-soft);
  align-items: start;
}
.pub-card:last-child { border-bottom: 0; }
@media (max-width: 720px) {
  .pub-card { grid-template-columns: 1fr; gap: 16px; padding: 24px 0; }
}

.pub-card__figure {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 196px;
  padding: 12px 14px;
  background: var(--paper-2);
  border: 1px solid var(--hairline);
  overflow: hidden;
  transition: border-color 240ms var(--ease), background 240ms var(--ease);
}
.pub-card__figure:hover {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--paper-2) 82%, var(--paper));
}
.pub-card__figure img {
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: 228px;
  object-fit: contain;
  object-position: center;
  filter: contrast(1.01);
}
@media (max-width: 720px) {
  .pub-card__figure {
    min-height: 188px;
  }

  .pub-card__figure img {
    max-height: 220px;
  }
}

.pub-card__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image:
    repeating-linear-gradient(
      135deg,
      transparent 0,
      transparent 7px,
      var(--hairline) 7px,
      var(--hairline) 8px
    );
}
.pub-card__placeholder-label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--paper);
  padding: 6px 12px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
}

.pub-card__badge {
  position: absolute;
  top: 10px; left: 10px;
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--accent-ink);
  padding: 4px 8px;
  border-radius: 2px;
}

.pub-card__body { min-width: 0; }
.pub-card__meta {
  display: flex; gap: 10px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 8px;
}
.pub-card__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.012em;
  line-height: 1.25;
  margin: 0 0 10px;
  color: var(--ink);
}
.pub-card__title a { transition: color 200ms var(--ease); }
.pub-card__title a:hover { color: var(--accent-ink); }
.pub-card__authors {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0 0 4px;
  line-height: 1.55;
}
.pub-card__authors strong { color: var(--ink); font-weight: 500; }
.pub-card__venue {
  font-size: 13.5px;
  color: var(--ink-2);
  margin: 0 0 12px;
}
.pub-card__summary {
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.6;
  margin: 0 0 14px;
  max-width: 64ch;
  text-wrap: pretty;
}

/* ---------------- research page ---------------- */
.vision {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin: 0 0 28px;
  text-wrap: balance;
  font-variation-settings: "opsz" 56;
}
.vision em {
  font-style: italic;
  color: var(--accent-ink);
  font-weight: 400;
}
.vision__flow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  align-items: center;
  margin: 0 0 32px;
  padding-top: 18px;
  border-top: 1px solid color-mix(in oklab, var(--hairline) 60%, transparent);
  max-width: 36em;
}
.vision__flow > span {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.vision__flow > span.vision__sep {
  font-family: var(--f-display);
  font-size: 14px;
  letter-spacing: 0;
  color: var(--accent);
  text-transform: none;
}

.agenda {
  display: grid;
  gap: 0;
}
.agenda__item {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: clamp(40px, 6vw, 80px);
  padding: 40px 0;
  border-top: 1px solid var(--hairline);
  align-items: start;
}
.agenda__item:last-child { border-bottom: 1px solid var(--hairline); }
@media (max-width: 880px) {
  .agenda__item { grid-template-columns: 1fr; gap: 16px; padding: 28px 0; }
}
.agenda__rail {
  display: flex; flex-direction: column; gap: 12px;
}
.agenda__num {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 56px;
  color: var(--accent);
  line-height: 1;
}
.agenda__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 28px;
  margin: 0;
  letter-spacing: -0.015em;
}
.agenda__desc {
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
  margin: 0 0 28px;
  max-width: 60ch;
  text-wrap: pretty;
}
.agenda__body p {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 0 16px;
}
.agenda__field-label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 18px 0 8px;
}
.agenda__threads {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 6px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.agenda__threads li {
  padding-left: 18px;
  position: relative;
}
.agenda__threads li::before {
  content: "·";
  position: absolute; left: 4px;
  color: var(--accent);
}

/* ---------------- CV ---------------- */
.cv-summary {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  padding: 48px 0;
  border-bottom: 1px solid var(--hairline);
}
@media (max-width: 880px) { .cv-summary { grid-template-columns: 1fr; gap: 24px; } }
.cv-summary__lead {
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.35;
  color: var(--ink);
  margin: 0 0 28px;
  max-width: 36ch;
  text-wrap: pretty;
}
.cv-summary__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 28px;
}
.cv-summary__cell span {
  display: block;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.cv-summary__cell p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-2);
  font-weight: 450;
}
.cv-summary__actions {
  display: flex; flex-direction: column; gap: 0;
}
.cv-summary__actions a {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
  transition: color 200ms var(--ease), padding-left 200ms var(--ease);
}
.cv-summary__actions a:hover { color: var(--accent-ink); padding-left: 8px; }
.cv-summary__actions a:first-child { border-top: 1px solid var(--hairline); }

.cv-block {
  padding: 36px 0;
  border-bottom: 1px solid var(--hairline-soft);
}
.cv-block h2 {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 22px;
  margin: 0 0 24px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.cv-item {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 32px;
  padding: 14px 0;
  border-top: 1px solid var(--hairline-soft);
  align-items: baseline;
}
.cv-item:first-of-type { border-top: 1px solid var(--hairline); }
@media (max-width: 720px) {
  .cv-item { grid-template-columns: 1fr; gap: 4px; padding: 12px 0; }
}
.cv-item__title {
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 2px;
}
.cv-item__inst {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
}
.cv-item__details {
  font-size: 13px;
  color: var(--muted-2);
  margin: 4px 0 0;
  font-style: italic;
}
.cv-item__date {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-align: right;
}
@media (max-width: 720px) {
  .cv-item__date { text-align: left; }
}

/* ---------------- scroll reveal ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
.reveal--in {
  opacity: 1;
  transform: none;
}

/* ---------------- library ---------------- */
.lib {
  display: grid;
  gap: 0;
}
.lib-cat {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  padding: 48px 0;
  border-bottom: 1px solid var(--hairline);
  align-items: start;
}
.lib-cat:first-child { border-top: 1px solid var(--hairline); }
@media (max-width: 720px) {
  .lib-cat { grid-template-columns: 1fr; gap: 20px; padding: 32px 0; }
}

.lib-cat__head {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
@media (max-width: 720px) { .lib-cat__head { position: static; } }

.lib-cat__num {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 40px;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
  margin: 0;
}
.lib-cat__title {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 26px;
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1.15;
  color: var(--ink);
}
.lib-cat__desc {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.5;
  margin: 0;
  max-width: 28ch;
}

.lib-cat__body {
  display: grid;
  gap: 36px;
}
.lib-block__title {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--hairline-soft);
}
.lib-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
}
.lib-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline-soft);
  align-items: baseline;
  transition: padding-left 240ms var(--ease);
}
.lib-item:last-child { border-bottom: 0; }
.lib-item:hover { padding-left: 8px; }
@media (max-width: 480px) {
  .lib-item { grid-template-columns: 1fr; gap: 2px; }
}
.lib-item__link {
  font-size: 15.5px;
  color: var(--ink);
  line-height: 1.4;
  transition: color 200ms var(--ease);
  text-wrap: pretty;
}
.lib-item__link:hover { color: var(--accent-ink); }
.lib-item__type {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
@media print {
  .nav, .footer { display: none !important; }
  body { background: #fff; color: #000; }
  body::before { display: none; }
  .section, .page-intro { padding: 20px 0; border: 0; }
  a { color: #000; text-decoration: underline; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}