/* =============================================================================
   Dubi Nanda Dhakal - portfolio
   Native CSS. No framework, no build step.
   Type:  Newsreader (display, literary serif) + IBM Plex Sans (text / UI)
   Accent: a single deep Prussian blue, the colour of a Himalayan sky and of
           archival ink, on cool paper. Locked across the whole page, both themes.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --paper: #f4f6f8;
  --surface-2: #e8edf1;
  --ink: #161a1f;
  --ink-2: #414952;
  --ink-3: #5e6773;
  --line: #dce3ea;
  --line-2: #c7d0da;
  --accent: #28527a;
  --accent-2: #1e4061;
  --accent-wash: #dce7f1;
  --on-accent: #f0f5f9;

  --r: 3px;
  --measure: 63ch;
  --wrap: 1120px;
  --wrap-narrow: 760px;

  --ff-serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --ff-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --ff-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --step-hero: clamp(2.9rem, 2rem + 4.6vw, 5rem);
  --step-h2: clamp(1.8rem, 1.35rem + 1.9vw, 2.55rem);
  --step-h3: clamp(1.12rem, 1rem + 0.4vw, 1.32rem);
  --step-lede: clamp(1.14rem, 1rem + 0.7vw, 1.42rem);

  --pad-section: clamp(4rem, 2.5rem + 7vw, 7.25rem);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #12151a;
    --surface-2: #191d24;
    --ink: #e5e9ee;
    --ink-2: #a7afba;
    --ink-3: #828b98;
    --line: #262c34;
    --line-2: #333b46;
    --accent: #8fb6db;
    --accent-2: #abcae7;
    --accent-wash: #1b2836;
    --on-accent: #0d1620;
  }
}

:root[data-theme="dark"] {
  --paper: #12151a;
  --surface-2: #191d24;
  --ink: #e5e9ee;
  --ink-2: #a7afba;
  --ink-3: #828b98;
  --line: #262c34;
  --line-2: #333b46;
  --accent: #8fb6db;
  --accent-2: #abcae7;
  --accent-wash: #1b2836;
  --on-accent: #0d1620;
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ff-sans);
  font-size: 1.0625rem;
  line-height: 1.62;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .35s var(--ease), color .35s var(--ease);
}

h1, h2, h3 { font-family: var(--ff-serif); font-weight: 440; }
p { margin: 0 0 1.1em; }
a { color: inherit; }
img { max-width: 100%; display: block; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed; top: 0; left: 0; z-index: 200;
  background: var(--accent); color: var(--on-accent);
  padding: .65rem 1rem; font-weight: 600; font-size: .9rem;
  transform: translateY(-120%);
  transition: transform .2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- Layout helpers ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1.15rem, 5vw, 2.5rem);
}
.wrap-full { width: 100%; }
.section--narrow { max-width: var(--wrap-narrow); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(180%) blur(9px);
  -webkit-backdrop-filter: saturate(180%) blur(9px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
}
.site-header__inner {
  display: flex; align-items: center; gap: 1.25rem;
  height: 68px;
}
.wordmark {
  text-decoration: none; display: grid; line-height: 1.15;
  margin-right: auto;
}
.wordmark__name {
  font-family: var(--ff-serif); font-size: 1.06rem; font-weight: 520;
  letter-spacing: .005em;
}
.wordmark__role {
  font-size: .72rem; letter-spacing: .04em; text-transform: uppercase;
  color: var(--ink-3);
}

.site-nav { display: flex; align-items: center; }
.site-nav__list {
  display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0;
}
.site-nav__list a {
  text-decoration: none; font-size: .92rem; color: var(--ink-2);
  padding: .35rem 0; position: relative;
  transition: color .2s var(--ease);
}
.site-nav__list a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--accent);
  transition: right .28s var(--ease);
}
.site-nav__list a:hover { color: var(--ink); }
.site-nav__list a:hover::after { right: 0; }

.nav-toggle { display: none; }

.theme-toggle {
  flex: none;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); }
.theme-toggle__icon { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.theme-toggle__icon--moon { display: none; }
:root[data-theme="dark"] .theme-toggle__icon--sun { display: none; }
:root[data-theme="dark"] .theme-toggle__icon--moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle__icon--sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle__icon--moon { display: block; }
}

/* ---------- Buttons ---------- */
.btn {
  -webkit-appearance: none;
  appearance: none;
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--ff-sans); font-size: .92rem; font-weight: 600;
  letter-spacing: .01em;
  padding: .7rem 1.15rem;
  border-radius: var(--r);
  text-decoration: none;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-2);
  cursor: pointer;
  transition: transform .12s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
  white-space: nowrap;
}
.btn--solid {
  background: var(--accent); border-color: var(--accent); color: var(--on-accent);
}
.btn--solid:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover {
  border-color: var(--ink);
  background: color-mix(in srgb, var(--ink) 5%, transparent);
}
.btn:active { transform: translateY(1px); }
.btn__ext { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-top: clamp(2.25rem, 1.5rem + 4vw, 4.75rem);
  padding-bottom: clamp(2.5rem, 1.75rem + 3.5vw, 4.25rem);
}
.hero__kicker {
  font-size: .96rem; color: var(--accent); font-weight: 500;
  margin: 0 0 1.1rem; letter-spacing: .01em;
}
.hero__name {
  font-size: var(--step-hero);
  line-height: 1.02;
  letter-spacing: -0.021em;
  font-weight: 440;
  margin: 0 0 .5rem;
}
.hero__deva {
  font-family: var(--ff-serif);
  font-size: clamp(1.1rem, 1rem + .6vw, 1.4rem);
  color: var(--ink-3);
  margin: 0 0 1.4rem;
  letter-spacing: .01em;
}
.hero__lede {
  font-family: var(--ff-serif);
  font-size: var(--step-lede);
  line-height: 1.4;
  color: var(--ink-2);
  max-width: 34ch;
  margin: 0 0 2rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; }

.hero__aside { display: flex; justify-content: flex-end; }
.portrait {
  position: relative;
  margin: 0;
  width: 100%;
  max-width: 340px;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface-2);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; }
.portrait__fallback { display: none; }
.portrait--empty {
  display: grid; place-items: center;
  background:
    radial-gradient(130% 130% at 20% 8%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 62%),
    repeating-linear-gradient(135deg, transparent 0 17px, color-mix(in srgb, var(--ink) 2.5%, transparent) 17px 18px),
    var(--surface-2);
}
.portrait--empty .portrait__fallback {
  display: grid; place-items: center; text-align: center;
  font-family: var(--ff-serif);
  font-size: clamp(3rem, 8vw, 4.75rem);
  color: var(--accent);
  line-height: 1;
}
.portrait__initials {
  display: block;
  font-family: var(--ff-mono);
  font-size: .78rem;
  letter-spacing: .3em;
  color: var(--ink-3);
  margin-top: .75rem;
}

/* ---------- Metrics ---------- */
.metrics { padding-block: clamp(2rem, 4vw, 3rem); }
.metrics__list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.metrics__list li {
  padding: 1.35rem 1.25rem;
  border-left: 1px solid var(--line);
}
.metrics__list li:first-child { border-left: 0; }
.metric__value {
  font-family: var(--ff-mono);
  font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.3rem);
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -.01em;
}
.metric__label {
  display: block; margin-top: .5rem;
  font-size: .8rem; color: var(--ink-3);
  letter-spacing: .02em;
}
.metrics__note {
  margin: .9rem 0 0; font-size: .78rem; color: var(--ink-3);
}

/* ---------- Sections ---------- */
.section { padding-block: var(--pad-section); }
.section--tint { background: var(--surface-2); }
.section__head { margin-bottom: clamp(2rem, 4vw, 3.25rem); }
.section__head--split {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 1.5rem 2rem; flex-wrap: wrap;
}
.section__title {
  font-size: var(--step-h2);
  line-height: 1.12;
  letter-spacing: -.014em;
  margin: 0;
  max-width: 20ch;
}
.section__intro {
  margin: 1.1rem 0 0;
  max-width: var(--measure);
  color: var(--ink-2);
  font-size: 1.09rem;
}
.eyebrow {
  font-size: .74rem; text-transform: uppercase; letter-spacing: .17em;
  color: var(--accent); font-weight: 600;
  margin: 0 0 .9rem;
}
.section__aside-link {
  display: inline-flex; align-items: center; gap: .45rem;
  font-size: .9rem; font-weight: 500; color: var(--ink-2);
  text-decoration: none; padding-bottom: .3rem;
  border-bottom: 1px solid var(--line-2);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.section__aside-link:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- About ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(2rem, 5vw, 4.5rem);
}
.about__prose p {
  font-size: 1.11rem;
  line-height: 1.68;
  color: var(--ink-2);
  max-width: var(--measure);
}
.about__prose p:first-child::first-letter {
  font-family: var(--ff-serif);
  font-size: 3.1em;
  float: left;
  line-height: .82;
  padding: .06em .1em .02em 0;
  color: var(--accent);
  font-weight: 440;
}
.about__prose p:last-child { margin-bottom: 0; }
.about__meta { display: grid; gap: 2rem; align-content: start; }
.meta-block__title {
  font-family: var(--ff-sans);
  font-size: .78rem; text-transform: uppercase; letter-spacing: .13em;
  color: var(--ink-3); font-weight: 600;
  margin: 0 0 .9rem;
}
.meta-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; }
.meta-list li { display: grid; gap: .15rem; padding-left: 0; }
.meta-list__t { font-weight: 600; font-size: .96rem; color: var(--ink); }
.meta-list__s { font-size: .9rem; color: var(--ink-3); }
.meta-list__y { font-family: var(--ff-mono); font-size: .8rem; color: var(--accent); }

/* ---------- Research ---------- */
.research {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 clamp(2rem, 5vw, 4rem);
  border-top: 1px solid var(--line-2);
}
.research__item {
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
}
.research dt {
  font-family: var(--ff-serif);
  font-size: 1.24rem;
  font-weight: 480;
  margin-bottom: .4rem;
}
.research dd {
  margin: 0; color: var(--ink-2); font-size: .99rem; line-height: 1.55;
  max-width: 46ch;
}

/* ---------- Fieldwork ---------- */
.langs { display: grid; gap: 2.5rem; }
.lang-group__label {
  font-family: var(--ff-sans);
  font-size: .8rem; text-transform: uppercase; letter-spacing: .12em;
  color: var(--ink-3); font-weight: 600;
  margin: 0 0 1rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--line);
}
.lang-tags { display: flex; flex-wrap: wrap; gap: .55rem; }
.tag {
  font-size: .92rem;
  padding: .4rem .75rem;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  color: var(--ink);
  background: var(--paper);
  cursor: default;
  transition: border-color .18s var(--ease), color .18s var(--ease), background-color .18s var(--ease);
}
.tag:hover { border-color: var(--accent); color: var(--accent); }
.section--tint .tag { background: color-mix(in srgb, var(--paper) 55%, var(--surface-2)); }

.regions { margin-top: 3rem; }
.regions__title {
  font-family: var(--ff-sans);
  font-size: .8rem; text-transform: uppercase; letter-spacing: .12em;
  color: var(--ink-3); font-weight: 600; margin: 0 0 1rem;
}
.regions__list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: .5rem .55rem;
}
.regions__list li {
  font-family: var(--ff-mono);
  font-size: .82rem;
  color: var(--ink-2);
  padding: .34rem .7rem;
  background: var(--accent-wash);
  border-radius: var(--r);
}

/* ---------- Projects ---------- */
.projects { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-2); }
.project {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 1.5rem clamp(1.5rem, 4vw, 3.5rem);
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}
.project__years {
  font-family: var(--ff-mono); font-size: .82rem; color: var(--accent);
  padding-top: .35rem; letter-spacing: -.01em;
}
.project__title {
  font-family: var(--ff-serif); font-size: 1.34rem; font-weight: 480;
  margin: 0 0 .3rem;
}
.project__org { font-size: .88rem; color: var(--ink-3); margin: 0 0 .8rem; }
.project__body { margin: 0; color: var(--ink-2); max-width: 62ch; font-size: 1rem; }

/* ---------- Publications ---------- */
.filters {
  display: flex; flex-wrap: wrap; gap: .55rem;
  margin-bottom: 2.25rem;
}
.chip {
  font-family: var(--ff-sans);
  font-size: .86rem; font-weight: 500;
  padding: .5rem .9rem;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease), background-color .18s var(--ease);
}
.chip:hover { border-color: var(--ink-3); color: var(--ink); }
.chip.is-active {
  background: var(--accent); border-color: var(--accent); color: var(--on-accent);
}

.pubs { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-2); }
.pub {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) auto;
  gap: .35rem 1.5rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.pub__year {
  font-family: var(--ff-mono); font-size: .84rem; color: var(--ink-3);
}
.pub__main { grid-column: 2; }
.pub__title {
  font-family: var(--ff-serif);
  font-size: 1.12rem;
  font-weight: 480;
  line-height: 1.32;
  margin: 0 0 .3rem;
}
.pub__title a { text-decoration: none; border-bottom: 1px solid var(--line-2); }
.pub__title a:hover { border-color: var(--accent); color: var(--accent); }
.pub__meta { font-size: .9rem; color: var(--ink-3); line-height: 1.45; }
.pub__meta strong { color: var(--ink-2); font-weight: 600; }
.pub__badges {
  grid-column: 3; grid-row: 1 / span 2;
  display: flex; flex-direction: column; align-items: flex-end; gap: .4rem;
  text-align: right;
}
.pub__type {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .1em;
  color: var(--ink-3);
}
.pub__cite {
  font-family: var(--ff-mono); font-size: .74rem;
  color: var(--accent);
  white-space: nowrap;
}
.pub.is-book .pub__title { font-size: 1.18rem; }
.pub.is-book { border-left: 2px solid var(--accent-wash); padding-left: 1rem; margin-left: -1rem; }

.pubs.is-collapsed .pub:not(.is-featured) { display: none; }
.pubs__empty { padding: 2rem 0; color: var(--ink-3); }
.pubs__more {
  margin-top: 1.75rem;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.pubs__count { font-size: .84rem; color: var(--ink-3); font-family: var(--ff-mono); }

/* ---------- Teaching ---------- */
.teaching {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.prose-lg {
  font-family: var(--ff-serif);
  font-size: clamp(1.16rem, 1.02rem + .7vw, 1.42rem);
  line-height: 1.5;
  color: var(--ink);
  max-width: 34ch;
  margin: 0;
}
.teaching__areas { padding-top: .5rem; }
@media (max-width: 820px) {
  .teaching { grid-template-columns: 1fr; gap: 2rem; }
  .prose-lg { max-width: none; }
}

/* ---------- Contact ---------- */
.contact {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 4rem);
}
.contact__address {
  font-style: normal;
  line-height: 1.7;
  color: var(--ink-2);
  margin-bottom: 1.75rem;
}
.contact__email-title { margin-top: 0; }
.contact__email {
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
}
.contact__email-link {
  font-size: 1.02rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--line-2);
  padding-bottom: 2px;
  word-break: break-all;
  transition: border-color .18s var(--ease);
}
.contact__email-link:hover { border-bottom-color: var(--accent); }
.contact__copy {
  -webkit-appearance: none; appearance: none;
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--ff-sans); font-size: .78rem; font-weight: 600;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  padding: .3rem .6rem;
  cursor: pointer;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}
.contact__copy:hover { color: var(--ink); border-color: var(--ink-3); }
.contact__copy.is-copied {
  color: var(--accent); border-color: var(--accent);
  background: var(--accent-wash);
}
.contact__copy-icon {
  width: 13px; height: 13px; fill: none; stroke: currentColor;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
.contact__email-hint {
  margin: .7rem 0 0; font-size: .82rem; color: var(--ink-3);
}
.contact__links { list-style: none; margin: 0; padding: 0; display: grid; gap: .1rem; }
.contact__links li { border-bottom: 1px solid var(--line); }
.contact__links a {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .9rem 0;
  text-decoration: none; color: var(--ink);
  font-size: 1rem;
  transition: color .18s var(--ease), padding .18s var(--ease);
}
.contact__links a::after {
  content: "↗"; color: var(--ink-3); font-size: .95rem;
  transition: color .18s var(--ease), transform .18s var(--ease);
}
.contact__links a:hover { color: var(--accent); padding-left: .4rem; }
.contact__links a:hover::after { color: var(--accent); transform: translate(2px, -2px); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 3rem;
  margin-top: 0;
}
.site-footer__inner {
  display: flex; flex-wrap: wrap; gap: 1.5rem 3rem;
  align-items: baseline; justify-content: space-between;
}
.site-footer__name { font-family: var(--ff-serif); font-size: 1.1rem; font-weight: 520; margin: 0 0 .2rem; }
.site-footer__role { font-size: .84rem; color: var(--ink-3); margin: 0; }
.site-footer__nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.site-footer__nav a {
  font-size: .88rem; color: var(--ink-2); text-decoration: none;
}
.site-footer__nav a:hover { color: var(--accent); }
.site-footer__fine {
  width: 100%; margin: 1rem 0 0; padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: .78rem; color: var(--ink-3);
}

/* ---------- Reveal on scroll ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(16px); }
  .reveal.is-in {
    opacity: 1; transform: none;
    transition: opacity .7s var(--ease), transform .7s var(--ease);
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero__aside { justify-content: flex-start; }
  .portrait { max-width: 280px; }
  .about { grid-template-columns: 1fr; }
  .about__meta {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 2.5rem;
  }
}

@media (max-width: 820px) {
  .site-header__inner { gap: .75rem; }
  .nav-toggle {
    display: grid; place-items: center;
    width: 38px; height: 38px; order: 3;
    background: transparent; border: 1px solid var(--line-2);
    border-radius: var(--r); cursor: pointer;
  }
  .nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after {
    content: ""; display: block; width: 17px; height: 1.5px;
    background: var(--ink); transition: transform .2s var(--ease), opacity .2s var(--ease);
  }
  .nav-toggle__bar { position: relative; }
  .nav-toggle__bar::before { position: absolute; top: -5px; left: 0; }
  .nav-toggle__bar::after { position: absolute; top: 5px; left: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: translateY(5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: translateY(-5px) rotate(-45deg); }

  .site-nav { order: 4; }
  .site-nav__list {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: .5rem clamp(1.15rem, 5vw, 2.5rem) 1rem;
    display: none;
  }
  .site-nav__list.is-open { display: flex; }
  .site-nav__list li { border-top: 1px solid var(--line); }
  .site-nav__list a { display: block; padding: .85rem 0; font-size: 1rem; }
  .site-nav__list a::after { display: none; }

  .wordmark__role { display: none; }

  .metrics__list { grid-template-columns: repeat(2, 1fr); }
  .metrics__list li:nth-child(3) { border-left: 0; }
  .metrics__list li:nth-child(n+3) { border-top: 1px solid var(--line); }

  .research { grid-template-columns: 1fr; }
  .research__item:first-child { border-top: 0; }

  .project { grid-template-columns: 1fr; gap: .4rem; }
  .project__years { padding-top: 0; }

  .pub {
    grid-template-columns: 1fr;
    gap: .3rem;
  }
  .pub__year { order: -1; }
  .pub__main { grid-column: 1; }
  .pub__badges {
    grid-column: 1; grid-row: auto;
    flex-direction: row; align-items: center; gap: .9rem;
    text-align: left; margin-top: .3rem;
  }
  .pub.is-book { margin-left: 0; padding-left: .9rem; }

  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 460px) {
  .about__meta { grid-template-columns: 1fr; }
  .hero__actions .btn { flex: 1 1 auto; justify-content: center; }
}

/* ---------- Print ---------- */
@media print {
  .site-header, .theme-toggle, .hero__actions, .filters, .pubs__more, .skip-link { display: none; }
  .pubs.is-collapsed .pub:not(.is-featured) { display: grid; }
  body { background: #fff; color: #000; }
}