/* ==========================================================================
   site.css — design system for ayanzadeh.com

   Scope contract
   --------------
   Every rule here targets either `.ds-root` (set on <html> of pages that use
   only this stylesheet) or a `.ds` container / a class defined in this file.
   Nothing targets bare elements or the legacy class names in style.css, so
   loading this file next to the legacy sheets on the homepage cannot change
   the Projects sections, and Projects pages do not load it at all.

   Layout of this file
   -------------------
   1 Fonts · 2 Tokens · 3 Base · 4 Layout · 5 Chrome (header, footer)
   6 Primitives (buttons, chips, links, icons) · 7 Section heads
   8 Home · 9 Publications · 10 Paper pages · 11 CV blocks · 12 Forms
   13 Blog · 14 Dialogs · 15 Utilities · 16 Motion · 17 Print
   ========================================================================== */

/* 1 ── Fonts (self-hosted; same files Google Fonts serves) ───────────────── */

@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-700-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-400-italic-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-400-italic-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: italic;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-700-italic-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: italic;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/atkinson-hyperlegible-700-italic-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  font-optical-sizing: auto;
  src: url('../fonts/newsreader-var-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  font-optical-sizing: auto;
  src: url('../fonts/newsreader-var-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* 2 ── Tokens ────────────────────────────────────────────────────────────── */
/* New names (--c-*, --f-*, --t-*, --s-*) so they never collide with the legacy
   custom properties that the Projects pages read. Light values match the
   legacy palette so both systems sit on the same page without a seam. */

:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f5f7fa;
  --c-bg-sunk: #eef2f6;
  --c-surface: #ffffff;
  --c-ink: #0f172a;
  --c-ink-2: #334155;
  --c-ink-3: #56657a;
  --c-line: #e0e6ed;
  --c-line-strong: #c3cdd9;
  --c-control: #77869b;
  --c-brand: #1c4f6b;
  --c-brand-strong: #143c52;
  --c-brand-tint: #e9f1f5;
  --c-accent: #b4532a;
  --c-accent-strong: #96431f;
  --c-accent-tint: #fbf0ea;
  --c-focus: #b4532a;
  --c-mark: #fde9c8;
  --c-figure: #ffffff;
  --c-on-brand: #ffffff;
  --c-header: rgba(255, 255, 255, 0.86);
  /* One hue per research thread. Lane position and label carry identity;
     the hue is a second cue (validated for adjacent-lane separation). */
  --th-navigation: #1f7fb0;
  --th-environment: #d2622c;
  --th-biomedical: #1f9d6e;
  --th-efficient: #6f58c9;
  --th-foundations: #b7791f;

  --f-display: 'Newsreader', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --f-body: 'Atkinson Hyperlegible', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-mono: ui-monospace, 'SFMono-Regular', 'Cascadia Mono', Menlo, Consolas, monospace;

  --t-xs: 0.8125rem;
  --t-sm: 0.9rem;
  --t-base: 1.0625rem;
  --t-md: 1.1875rem;
  --t-lg: clamp(1.3rem, 1.2rem + 0.45vw, 1.5rem);
  --t-xl: clamp(1.75rem, 1.45rem + 1.3vw, 2.25rem);
  --t-2xl: clamp(2.5rem, 1.7rem + 3.6vw, 4.25rem);

  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-sec: clamp(3.5rem, 2.4rem + 4.5vw, 5rem);

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-pill: 999px;

  --e-1: 0 1px 2px rgba(15, 23, 42, 0.06);
  --e-2: 0 1px 2px rgba(15, 23, 42, 0.05), 0 10px 28px -14px rgba(15, 23, 42, 0.22);

  --w-page: 1200px;
  --w-read: 44rem;
  --h-header: 4rem;

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 160ms;
}

:root[data-theme='dark'] {
  --c-bg: #0f1729;
  --c-bg-soft: #131d33;
  --c-bg-sunk: #16203a;
  --c-surface: #18223c;
  --c-ink: #e9eef7;
  --c-ink-2: #c0cbdd;
  --c-ink-3: #98a6bd;
  --c-line: #26334f;
  --c-line-strong: #3a4a6b;
  --c-control: #7787a8;
  --c-brand: #86c5e2;
  --c-brand-strong: #b1dcef;
  --c-brand-tint: rgba(110, 180, 212, 0.13);
  --c-accent: #eb9a6f;
  --c-accent-strong: #f5b592;
  --c-accent-tint: rgba(224, 138, 92, 0.13);
  --c-focus: #eb9a6f;
  --c-mark: rgba(235, 154, 111, 0.32);
  --c-figure: #f7f9fc;
  --c-on-brand: #0b1524;
  --c-header: rgba(15, 23, 41, 0.86);
  --th-navigation: #3f97d8;
  --th-environment: #dd6f3c;
  --th-biomedical: #2fa87a;
  --th-efficient: #9085e9;
  --th-foundations: #c98500;
  --e-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --e-2: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 30px -14px rgba(0, 0, 0, 0.7);
}

/* 3 ── Base (only on pages that opt in with .ds-root / .ds) ──────────────── */

.ds-root {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--h-header) + 1rem);
  scroll-behavior: smooth;
}
.ds-root[data-theme='dark'] { color-scheme: dark; }

.ds-root *,
.ds-root *::before,
.ds-root *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.ds-root body {
  min-height: 100vh;
  background: var(--c-bg);
  display: flex;
  flex-direction: column;
}
.ds-root body > main { flex: 1 0 auto; }

.ds {
  font-family: var(--f-body);
  font-size: var(--t-base);
  line-height: 1.6;
  letter-spacing: 0;
  color: var(--c-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

:where(.ds) :where(p, li, dd, dt) { line-height: inherit; }
:where(.ds) :where(a, button, input, textarea, select) { transition: none; }
:where(.ds) :where(h1, h2, h3, h4) { font-weight: 600; line-height: 1.2; text-wrap: balance; }
:where(.ds) :where(p) { text-wrap: pretty; }
:where(.ds) :where(ul, ol) { list-style: none; }
:where(.ds) :where(img, svg) { display: block; max-width: 100%; }
:where(.ds) :where(img) { height: auto; }
:where(.ds) :where(button, input, textarea, select) { font: inherit; color: inherit; letter-spacing: inherit; }
:where(.ds) :where(a) { color: var(--c-brand); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
:where(.ds) :where(a:hover) { color: var(--c-brand-strong); }
:where(.ds) :where(strong, b) { font-weight: 700; }
:where(.ds) ::selection { background: color-mix(in srgb, var(--c-brand) 24%, transparent); color: inherit; }

.ds :focus-visible {
  outline: 2px solid var(--c-focus);
  outline-offset: 3px;
  border-radius: 3px;
}
.ds :focus:not(:focus-visible) { outline: none; }

.ds mark {
  background: var(--c-mark);
  color: inherit;
  border-radius: 2px;
  padding: 0 0.1em;
}

/* 4 ── Layout ────────────────────────────────────────────────────────────── */

.wrap {
  width: 100%;
  max-width: var(--w-page);
  margin-inline: auto;
  padding-inline: clamp(1.125rem, 4vw, 1.5rem);
}
.wrap--read { max-width: calc(var(--w-read) + 3rem); }
.wrap--mid { max-width: 61rem; }

.sec {
  position: relative;
  padding-block: var(--s-sec);
  background: var(--c-bg);
  overflow: visible;
}
.sec--tint { background: var(--c-bg-soft); }
.sec--rule { border-top: 1px solid var(--c-line); }

.stack > * + * { margin-top: var(--stack, var(--s-4)); }

/* 5 ── Chrome ────────────────────────────────────────────────────────────── */

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  border-radius: var(--r-sm);
  background: var(--c-ink);
  color: var(--c-bg);
  font: 700 var(--t-sm)/1 var(--f-body);
  text-decoration: none;
}
.skip-link:focus { top: 0.75rem; color: var(--c-bg); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-header);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header[data-stuck] {
  border-bottom-color: var(--c-line);
  box-shadow: 0 6px 20px -16px rgba(15, 23, 42, 0.35);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  min-height: var(--h-header);
  max-width: var(--w-page);
  margin-inline: auto;
  padding-inline: clamp(1.125rem, 4vw, 1.5rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--c-ink);
  text-decoration: none;
  flex: 0 0 auto;
  margin-right: auto;
}
.brand:hover { color: var(--c-ink); }
.brand__mark { width: 1.75rem; height: 1.75rem; flex: 0 0 auto; }
.brand__mark .m-plate { fill: var(--c-brand); }
.brand__mark .m-glyph { stroke: var(--c-on-brand); }
.brand__mark .m-dot { fill: var(--c-accent); }
.brand__name {
  font-family: var(--f-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.site-nav__list { display: flex; align-items: center; gap: 0.125rem; }
.site-nav__link {
  position: relative;
  display: block;
  padding: 0.5rem 0.7rem;
  border-radius: var(--r-sm);
  color: var(--c-ink-2);
  font-size: 0.95rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.site-nav__link:hover { color: var(--c-ink); background: var(--c-bg-sunk); }
.site-nav__link[aria-current] { color: var(--c-ink); font-weight: 700; }
.site-nav__link[aria-current]::after {
  content: '';
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.2rem;
  height: 2px;
  border-radius: 2px;
  background: var(--c-accent);
}

.site-header__tools { display: flex; align-items: center; gap: var(--s-2); flex: 0 0 auto; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--c-ink-2);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.icon-btn:hover { background: var(--c-bg-sunk); color: var(--c-ink); }
.icon-btn .icon { width: 1.2rem; height: 1.2rem; }

[data-theme-toggle] .icon--sun { display: none; }
:root[data-theme='dark'] [data-theme-toggle] .icon--sun { display: block; }
:root[data-theme='dark'] [data-theme-toggle] .icon--moon { display: none; }

.nav-toggle { display: none; }
.nav-toggle .icon--close { display: none; }
.nav-toggle[aria-expanded='true'] .icon--menu { display: none; }
.nav-toggle[aria-expanded='true'] .icon--close { display: block; }

@media (max-width: 1040px) {
  .nav-toggle { display: inline-grid; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    max-height: calc(100vh - var(--h-header));
    max-height: calc(100dvh - var(--h-header));
    overflow-y: auto;
    padding: var(--s-2) clamp(1.125rem, 4vw, 1.5rem) var(--s-5);
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 24px 40px -28px rgba(15, 23, 42, 0.5);
  }
  .site-nav[data-open] { display: block; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__link {
    padding: 0.85rem 0.25rem;
    border-radius: 0;
    border-bottom: 1px solid var(--c-line);
    font-size: 1.0625rem;
  }
  .site-nav__link:hover { background: transparent; }
  .site-nav__link[aria-current]::after { left: 0; right: auto; width: 1.5rem; bottom: 0.45rem; }
}
@media (max-width: 420px) {
  .brand__name { font-size: 1.125rem; }
  .site-header__tools .button--cv { display: none; }
}

.site-footer {
  margin-top: auto;
  padding-block: var(--s-7) var(--s-5);
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-line);
  color: var(--c-ink-2);
  font-size: var(--t-sm);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: var(--s-6) var(--s-5);
}
.site-footer__about p { max-width: 30rem; margin-top: var(--s-3); }
.site-footer h2 {
  font: 700 var(--t-xs)/1.3 var(--f-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-ink-3);
  margin-bottom: var(--s-3);
}
.site-footer__links li + li { margin-top: 0.35rem; }
.site-footer__links a { color: var(--c-ink-2); text-decoration: none; }
.site-footer__links a:hover { color: var(--c-brand); text-decoration: underline; }
.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-2) var(--s-5);
  margin-top: var(--s-6);
  padding-top: var(--s-4);
  border-top: 1px solid var(--c-line);
  color: var(--c-ink-3);
  font-size: var(--t-xs);
}
@media (max-width: 820px) {
  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__about { grid-column: 1 / -1; }
}

/* 6 ── Primitives ────────────────────────────────────────────────────────── */

.icon {
  width: 1em;
  height: 1em;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon--solid { fill: currentColor; stroke: none; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.55rem 1.15rem;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  color: var(--c-ink);
  font: 700 0.95rem/1.2 var(--f-body);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.button:hover { border-color: var(--c-brand); color: var(--c-brand); }
.button:active { transform: translateY(1px); }
.button .icon { width: 1.05em; height: 1.05em; }
.button--primary {
  background: var(--c-brand);
  border-color: var(--c-brand);
  color: var(--c-on-brand);
}
.button--primary:hover { background: var(--c-brand-strong); border-color: var(--c-brand-strong); color: var(--c-on-brand); }
.button--sm { min-height: 2.25rem; padding: 0.35rem 0.85rem; font-size: var(--t-sm); }
.button[disabled] { opacity: 0.6; cursor: progress; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  text-decoration: none;
}
.link-arrow .icon { transition: transform var(--dur) var(--ease); }
.link-arrow:hover .icon { transform: translateX(3px); }
.link-arrow:hover { text-decoration: underline; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.25rem;
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--c-control);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  color: var(--c-ink-2);
  font-size: var(--t-sm);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.chip:hover { border-color: var(--c-brand); color: var(--c-ink); }
.chip[aria-pressed='true'] {
  background: var(--c-brand);
  border-color: var(--c-brand);
  color: var(--c-on-brand);
  font-weight: 700;
}
.chip__n { font-size: var(--t-xs); opacity: 0.75; font-variant-numeric: tabular-nums; }

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.12rem 0.55rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: var(--c-bg-soft);
  color: var(--c-ink-2);
  font-size: var(--t-xs);
  line-height: 1.5;
  white-space: nowrap;
}
.pill--accepted { background: var(--c-brand-tint); border-color: transparent; color: var(--c-brand-strong); font-weight: 700; }
.pill--pending { background: var(--c-accent-tint); border-color: transparent; color: var(--c-accent-strong); font-weight: 700; }

.eyebrow {
  font: 700 var(--t-xs)/1.4 var(--f-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent-strong);
}

/* 7 ── Section heads (same idiom as the legacy sections they sit beside) ─── */

.sec__head { text-align: center; margin-bottom: var(--s-7); }
.sec__title {
  font-family: var(--f-display);
  font-size: var(--t-xl);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--c-ink);
}
.sec__title::after {
  content: '';
  display: block;
  width: 3.5rem;
  height: 3px;
  margin: 0.75rem auto 0;
  border-radius: 2px;
  background: var(--c-accent);
}
.sec__lede {
  max-width: 44rem;
  margin: var(--s-4) auto 0;
  color: var(--c-ink-3);
  font-size: 1.1rem;
}
.sub__title {
  font: 700 var(--t-xs)/1.4 var(--f-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-ink-3);
}

/* 8 ── Home ──────────────────────────────────────────────────────────────── */

.intro {
  padding-block: clamp(2.5rem, 1.5rem + 5vw, 5.5rem) clamp(2.5rem, 1.5rem + 4vw, 4.5rem);
  background:
    radial-gradient(60rem 28rem at 88% -10%, color-mix(in srgb, var(--c-accent) 9%, transparent), transparent 70%),
    radial-gradient(48rem 26rem at -8% 108%, color-mix(in srgb, var(--c-brand) 10%, transparent), transparent 70%),
    var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}
.intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(13rem, 24vw, 19rem);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: center;
}
.intro__name {
  margin-top: var(--s-3);
  font-family: var(--f-display);
  font-size: var(--t-2xl);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.03em;
}
.intro__role { margin-top: var(--s-4); font-size: var(--t-md); color: var(--c-ink-2); }
.intro__role a { color: inherit; font-weight: 700; text-decoration-color: var(--c-accent); }
.intro__role a:hover { color: var(--c-brand); }
.intro__lead {
  max-width: 40rem;
  margin-top: var(--s-5);
  font-family: var(--f-display);
  font-size: var(--t-lg);
  line-height: 1.45;
  color: var(--c-ink);
}
.intro__actions { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-top: var(--s-6); }
.intro__profiles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  margin-top: var(--s-5);
  font-size: var(--t-sm);
}
.intro__profiles a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding-block: 0.3rem;
  color: var(--c-ink-2);
  text-decoration: none;
}
.intro__profiles a:hover { color: var(--c-brand); text-decoration: underline; }
.intro__profiles .icon { width: 0.8em; height: 0.8em; opacity: 0.7; }

/* Portrait, framed the way a detector would draw it: four corner brackets and
   a class label. One quiet nod to the field; the photo itself stays plain. */
.portrait {
  position: relative;
  justify-self: end;
  width: 100%;
  padding: 0.85rem;
  isolation: isolate;
}
.portrait::before {
  content: '';
  position: absolute;
  inset: -12%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--c-brand) 16%, transparent), transparent 100%);
  pointer-events: none;
}
.portrait img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 18%;
  border-radius: 0.75rem;
  background: var(--c-bg-sunk);
  box-shadow: 0 0 0 1px var(--c-line), var(--e-2);
}
.portrait__corners i {
  position: absolute;
  width: 1.6rem;
  height: 1.6rem;
  border: 2px solid var(--c-accent);
}
.portrait__corners i:nth-child(1) { top: 0; left: 0; border-right: 0; border-bottom: 0; border-top-left-radius: 0.6rem; }
.portrait__corners i:nth-child(2) { top: 0; right: 0; border-left: 0; border-bottom: 0; border-top-right-radius: 0.6rem; }
.portrait__corners i:nth-child(3) { bottom: 0; left: 0; border-right: 0; border-top: 0; border-bottom-left-radius: 0.6rem; }
.portrait__corners i:nth-child(4) { bottom: 0; right: 0; border-left: 0; border-top: 0; border-bottom-right-radius: 0.6rem; }
.portrait__label {
  position: absolute;
  left: 1.9rem;
  top: 0;
  z-index: 1;
  transform: translateY(-50%);
  padding: 0.1rem 0.5rem;
  border-radius: 0.3rem;
  background: var(--c-accent);
  color: var(--c-bg);
  font: 700 0.7rem/1.5 var(--f-mono);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
@media (prefers-reduced-motion: no-preference) {
  .portrait__corners { animation: portrait-lock 900ms var(--ease) 200ms both; display: block; position: absolute; inset: 0; }
  .portrait__label { animation: portrait-label 400ms var(--ease) 900ms both; }
  @keyframes portrait-lock { from { inset: -0.9rem; opacity: 0; } to { inset: 0; opacity: 1; } }
  @keyframes portrait-label { from { opacity: 0; } to { opacity: 1; } }
}
.portrait__corners { position: absolute; inset: 0; pointer-events: none; }

.facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--c-line);
}
.facts > li { padding: var(--s-4) var(--s-4) 0 0; }
.facts > li + li { padding-left: var(--s-4); border-left: 1px solid var(--c-line); }
.facts a { display: block; color: inherit; text-decoration: none; }
.facts a:hover .facts__k { color: var(--c-brand); text-decoration: underline; }
.facts__v {
  display: block;
  font-family: var(--f-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.1;
  font-variant-numeric: lining-nums;
  color: var(--c-brand);
}
.facts__k { display: block; margin-top: 0.2rem; font-size: var(--t-sm); color: var(--c-ink-2); }

@media (max-width: 760px) {
  .intro__grid { grid-template-columns: minmax(0, 1fr); }
  .portrait { grid-row: 1; justify-self: start; width: 9.5rem; padding: 0.6rem; margin-top: 0.5rem; }
  .portrait img { aspect-ratio: 1; }
  .portrait__corners i { width: 1.1rem; height: 1.1rem; }
  .portrait__label { left: 1.3rem; font-size: 0.62rem; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts > li { padding: var(--s-4) var(--s-3) var(--s-3) 0; }
  .facts > li + li { padding-left: 0; border-left: 0; }
  .facts > li:nth-child(even) { padding-left: var(--s-4); border-left: 1px solid var(--c-line); }
  .facts > li:nth-child(n + 3) { border-top: 1px solid var(--c-line); }
}

/* Research: narrative + interests */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: start;
}
.prose { font-size: 1.125rem; line-height: 1.7; color: var(--c-ink-2); }
.prose > * + * { margin-top: 1.1em; }
.prose strong { color: var(--c-ink); }
.prose--lead > p:first-child { font-family: var(--f-display); font-size: var(--t-lg); line-height: 1.5; color: var(--c-ink); }

.about__side { display: grid; gap: var(--s-5); min-width: 0; }
/* Illustration: floor plan, the graph laid over it, then the route. */
.planfig {
  padding: var(--s-4) var(--s-4) var(--s-3);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background: var(--c-surface);
  box-shadow: var(--e-1);
}
.planfig svg { width: 100%; height: auto; overflow: visible; }
.planfig figcaption { margin-top: var(--s-2); font-size: var(--t-xs); line-height: 1.5; color: var(--c-ink-3); }
.pf-walls path { fill: none; stroke: var(--c-ink-3); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.pf-edges { fill: none; stroke: var(--th-navigation); stroke-width: 1.4; stroke-dasharray: 3 4; opacity: 0.75; }
.pf-nodes circle { fill: var(--c-surface); stroke: var(--th-navigation); stroke-width: 2; }
.pf-route { fill: none; stroke: var(--c-accent); stroke-width: 3.5; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 100; stroke-dashoffset: 0; }
.pf-start { fill: var(--c-surface); stroke: var(--c-accent); stroke-width: 2.5; }
.pf-goal { fill: var(--c-accent); stroke: var(--c-surface); stroke-width: 2; }
.pf-walker { fill: var(--c-ink); stroke: var(--c-surface); stroke-width: 2; offset-path: path('M36 110H285V57'); offset-distance: 100%; opacity: 0; }
.pf-labels text { font: 700 9.5px var(--f-body); letter-spacing: 0.06em; text-transform: uppercase; fill: var(--c-ink-3); }
@media (prefers-reduced-motion: no-preference) {
  .pf-graph { animation: pf-graph 10s var(--ease) infinite; }
  .pf-route { animation: pf-route 10s var(--ease) infinite; }
  .pf-goal { animation: pf-goal 10s var(--ease) infinite; transform-box: fill-box; transform-origin: center; }
  .pf-walker { animation: pf-walk 10s var(--ease) infinite; }
  @keyframes pf-graph { 0%, 8% { opacity: 0; } 24%, 100% { opacity: 1; } }
  @keyframes pf-route { 0%, 30% { stroke-dashoffset: 100; } 68%, 100% { stroke-dashoffset: 0; } }
  @keyframes pf-walk { 0%, 30% { offset-distance: 0%; opacity: 0; } 33% { opacity: 1; } 68% { offset-distance: 100%; opacity: 1; } 74%, 100% { offset-distance: 100%; opacity: 0; } }
  @keyframes pf-goal { 0%, 66% { transform: scale(1); } 72% { transform: scale(1.5); } 80%, 100% { transform: scale(1); } }
}

.interests { display: grid; gap: var(--s-4); }
.interests > div { padding-left: var(--s-4); border-left: 2px solid var(--c-line); }
.interests dt {
  font: 700 var(--t-xs)/1.4 var(--f-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-ink-3);
}
.interests dd { margin-top: 0.3rem; color: var(--c-ink); }

/* Research threads: one lane per thread, one mark per paper, x = year */
.threads {
  position: relative;
  margin-top: var(--s-7);
  padding: clamp(1.125rem, 3vw, 2rem);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(40rem 16rem at 100% 0%, color-mix(in srgb, var(--c-brand) 6%, transparent), transparent 70%),
    var(--c-surface);
  box-shadow: var(--e-2);
}
.threads__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-2) var(--s-5);
  margin-bottom: var(--s-3);
}
.threads__title { font-family: var(--f-display); font-size: 1.45rem; font-weight: 600; letter-spacing: -0.01em; }
.threads__legend { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4); font-size: var(--t-xs); color: var(--c-ink-2); }
.threads__legend span { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--c-ink-2); }
.threads__legend svg { width: 0.85rem; height: 0.85rem; overflow: visible; color: var(--c-brand); }
.threads__legend-bar svg { width: 1.5rem; }

.threads__axis,
.thread {
  display: grid;
  grid-template-columns: minmax(14rem, 21rem) minmax(0, 1fr);
  gap: var(--s-5);
  align-items: center;
}
.thread {
  --th: var(--c-brand);
  padding-block: var(--s-4);
  border-top: 1px solid var(--c-line);
}
.thread--navigation { --th: var(--th-navigation); }
.thread--environment { --th: var(--th-environment); }
.thread--biomedical { --th: var(--th-biomedical); }
.thread--efficient { --th: var(--th-efficient); }
.thread--foundations { --th: var(--th-foundations); }

.thread__info { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--s-3); align-items: start; }
.thread__icon {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.7rem;
  background: color-mix(in srgb, var(--th) 14%, var(--c-surface));
  color: var(--th);
  transition: transform 300ms var(--ease);
}
.thread__icon .icon { width: 1.3rem; height: 1.3rem; stroke-width: 1.6; }
.thread:hover .thread__icon { transform: rotate(-6deg) scale(1.06); }
.thread__name { font-size: 1.05rem; font-weight: 700; line-height: 1.3; color: var(--c-ink); }
.thread__sum { margin-top: 0.25rem; font-size: var(--t-sm); line-height: 1.5; color: var(--c-ink-3); }
.thread__n { margin-top: 0.35rem; font-size: var(--t-xs); color: var(--c-ink-3); }

.thread__track,
.threads__years {
  display: grid;
  grid-template-columns: repeat(var(--n), minmax(0, 1fr));
  align-items: center;
}
.thread__track { position: relative; min-height: 4rem; }
.thread__cell {
  position: relative;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  min-height: 4rem;
}
/* faint year gridline through every column */
.thread__cell::before {
  content: '';
  position: absolute;
  left: 50%;
  top: -1rem;
  bottom: -1rem;
  width: 1px;
  background: var(--c-line);
  opacity: 0.7;
}
/* the years a thread was active */
.thread__span {
  grid-row: 1;
  align-self: center;
  height: 0.7rem;
  margin-inline: calc(50% / var(--k));
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, color-mix(in srgb, var(--th) 16%, transparent), color-mix(in srgb, var(--th) 34%, transparent));
}
.dot {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  text-decoration: none;
}
.dot::before {
  content: '';
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: var(--th);
  box-shadow: 0 0 0 3px var(--c-surface);
  transition: transform var(--dur) var(--ease);
}
.dot--open::before {
  background: var(--c-surface);
  box-shadow: 0 0 0 3px var(--c-surface), inset 0 0 0 2.5px var(--th);
}
.dot:hover::before,
.dot:focus-visible::before,
.dot[data-active]::before { transform: scale(1.35); }
/* a slow pulse on this year's papers: the thread is still moving */
.dot--live::after {
  content: '';
  position: absolute;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  border: 2px solid var(--th);
  opacity: 0;
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  .dot--live::after { animation: dot-pulse 2.8s ease-out infinite; }
  .thread:nth-child(2) .dot--live::after { animation-delay: 0.7s; }
  @keyframes dot-pulse {
    0% { transform: scale(1); opacity: 0.7; }
    70%, 100% { transform: scale(2.6); opacity: 0; }
  }
}
.threads__years {
  font-size: var(--t-xs);
  color: var(--c-ink-3);
  font-variant-numeric: tabular-nums;
}
.threads__years span { text-align: center; }
.threads__axis { padding-top: var(--s-3); border-top: 1px solid var(--c-line); }
.threads__note { margin-top: var(--s-4); font-size: var(--t-sm); color: var(--c-ink-3); }

.threads__tip {
  position: absolute;
  z-index: 5;
  width: max-content;
  max-width: min(22rem, calc(100% - 1.5rem));
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--c-surface);
  box-shadow: 0 12px 32px -12px rgba(8, 15, 30, 0.45);
  font-size: var(--t-sm);
  line-height: 1.45;
  color: var(--c-ink-2);
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 0.9rem));
}
.threads__tip strong { display: block; margin-bottom: 0.15rem; font-family: var(--f-display); font-size: 1.02rem; font-weight: 600; line-height: 1.3; color: var(--c-ink); }
.threads__tip[data-below] { transform: translate(-50%, 0.9rem); }

@media (max-width: 860px) {
  .about { grid-template-columns: minmax(0, 1fr); }
  .threads__axis, .thread { grid-template-columns: minmax(0, 1fr); gap: var(--s-2); }
  .threads__axis > :first-child { display: none; }
  .threads__years span[data-minor] { visibility: hidden; }
  .thread__track, .thread__cell { min-height: 3.25rem; }
  .dot { width: 1.5rem; height: 1.5rem; }
}

/* Toolkit: a slow row of logo tiles between Research and Publications */
.toolkit {
  padding-block: var(--s-6);
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
  overflow: hidden;
}
.toolkit__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.25rem var(--s-4); margin-bottom: var(--s-4); }
.toolkit__title { font-family: var(--f-display); font-size: 1.45rem; font-weight: 600; letter-spacing: -0.01em; }
.toolkit__lede { color: var(--c-ink-3); font-size: var(--t-sm); }
.toolkit__toggle { margin-left: auto; align-self: center; width: 2.25rem; height: 2.25rem; border-color: var(--c-line-strong); }
.toolkit__toggle .icon--play { display: none; }
.toolkit__toggle[aria-pressed='true'] .icon--play { display: block; }
.toolkit__toggle[aria-pressed='true'] .icon--pause { display: none; }
.marquee {
  display: flex;
  gap: var(--s-3);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}
.marquee__track { display: flex; flex: 0 0 auto; gap: var(--s-3); min-width: 100%; justify-content: space-around; }
.tool {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 1rem 0.55rem 0.55rem;
  border: 1px solid var(--c-line);
  border-radius: 0.9rem;
  background: var(--c-surface);
  white-space: nowrap;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}
.tool:hover { transform: translateY(-3px); border-color: var(--c-line-strong); box-shadow: var(--e-2); }
.tool__icon {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.65rem;
  background: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
  transition: transform 300ms var(--ease);
}
.tool__icon svg { width: 1.45rem; height: 1.45rem; }
.tool:hover .tool__icon { transform: rotate(-8deg) scale(1.08); }
.tool__text { display: grid; }
.tool__name { font-weight: 700; line-height: 1.25; color: var(--c-ink); }
.tool__group { font-size: var(--t-xs); line-height: 1.3; color: var(--c-ink-3); }
@media (prefers-reduced-motion: no-preference) {
  .marquee__track { animation: marquee 60s linear infinite; }
  .marquee:hover .marquee__track,
  .marquee:focus-within .marquee__track,
  .marquee[data-paused] .marquee__track { animation-play-state: paused; }
  @keyframes marquee { to { transform: translateX(calc(-100% - var(--s-3))); } }
}
@media (prefers-reduced-motion: reduce) {
  .marquee { flex-wrap: wrap; -webkit-mask-image: none; mask-image: none; padding-inline: clamp(1.125rem, 4vw, 1.5rem); max-width: var(--w-page); margin-inline: auto; }
  .marquee__track { flex-wrap: wrap; justify-content: flex-start; min-width: 0; }
  .marquee__track[aria-hidden='true'] { display: none; }
  .toolkit__toggle { display: none; }
}
/* Without JavaScript the pause control never appears, so do not move. */
html:not(.js) .marquee__track { animation: none; }
html:not(.js) .marquee { flex-wrap: wrap; -webkit-mask-image: none; mask-image: none; padding-inline: clamp(1.125rem, 4vw, 1.5rem); }
html:not(.js) .marquee__track { flex-wrap: wrap; justify-content: flex-start; min-width: 0; }
html:not(.js) .marquee__track[aria-hidden='true'] { display: none; }

/* News */
.news { max-width: 52rem; margin-inline: auto; }
.news__item {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: var(--s-4);
  align-items: baseline;
  padding-block: 0.9rem;
  border-top: 1px solid var(--c-line);
}
.news__item:last-child { border-bottom: 1px solid var(--c-line); }
.news__when { font-size: var(--t-sm); color: var(--c-ink-3); font-variant-numeric: tabular-nums; white-space: nowrap; }
.news__what { color: var(--c-ink); }
.news__what a { text-decoration-color: color-mix(in srgb, var(--c-brand) 40%, transparent); }
.news__what a:hover { text-decoration-color: currentColor; }
.news__kind { margin-left: 0.4rem; vertical-align: 0.08em; }
.news[data-collapsed] .news__item[data-older] { display: none; }
.news__more { margin-top: var(--s-4); text-align: center; }
@media (max-width: 560px) {
  .news__item { grid-template-columns: minmax(0, 1fr); gap: 0.15rem; }
}

/* 9 ── Publications ──────────────────────────────────────────────────────── */

.pub { min-width: 0; }
.pub__title {
  font-family: var(--f-display);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--c-ink);
  text-wrap: balance;
}
.pub__title a { color: inherit; text-decoration: none; }
.pub__title a:hover { color: var(--c-brand); text-decoration: underline; text-decoration-thickness: 1px; }
.pub__authors { margin-top: 0.4rem; font-size: 0.98rem; color: var(--c-ink-2); }
.pub__authors .me { color: var(--c-ink); font-weight: 700; }
.pub__venue {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem 0.6rem;
  margin-top: 0.3rem;
  font-size: 0.95rem;
  color: var(--c-ink-3);
}
.pub__venue cite { font-style: italic; color: var(--c-ink-2); }
.pub__summary { max-width: 46rem; margin-top: 0.55rem; font-size: 0.98rem; line-height: 1.55; color: var(--c-ink-2); }
.pub__links { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.8rem; }
.pub__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2rem;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--c-brand);
  font-size: var(--t-sm);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.pub__link:hover { background: var(--c-brand-tint); border-color: var(--c-brand); color: var(--c-brand-strong); }
.pub__link .icon { width: 0.95em; height: 0.95em; }
.pub__link--page { background: var(--c-brand); border-color: var(--c-brand); color: var(--c-on-brand); }
.pub__link--page:hover { background: var(--c-brand-strong); border-color: var(--c-brand-strong); color: var(--c-on-brand); }

/* Home: selected publications */
.pubs-selected { max-width: 58rem; margin-inline: auto; }
.pubs-selected > li {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr);
  gap: var(--s-4);
  padding-block: var(--s-5);
  border-top: 1px solid var(--c-line);
}
.pubs-selected > li:last-child { border-bottom: 1px solid var(--c-line); }
.pub__year {
  font-family: var(--f-display);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--c-ink-3);
  font-variant-numeric: lining-nums tabular-nums;
}
.sec__more { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s-3) var(--s-5); margin-top: var(--s-6); }
@media (max-width: 560px) {
  .pubs-selected > li { grid-template-columns: minmax(0, 1fr); gap: 0.25rem; }
  .pub__year { font-size: var(--t-sm); font-family: var(--f-body); font-weight: 700; letter-spacing: 0.08em; }
}

/* Library page */
.page-hero {
  padding-block: clamp(2.25rem, 1.5rem + 3.5vw, 4rem) clamp(1.75rem, 1.2rem + 2.5vw, 3rem);
  background:
    radial-gradient(52rem 22rem at 92% -20%, color-mix(in srgb, var(--c-accent) 8%, transparent), transparent 70%),
    var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}
.page-hero__title {
  margin-top: var(--s-2);
  font-family: var(--f-display);
  font-size: clamp(2.25rem, 1.6rem + 2.8vw, 3.5rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
}
.page-hero__lede { max-width: 46rem; margin-top: var(--s-4); font-size: var(--t-md); color: var(--c-ink-2); }
.page-hero__meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; margin-top: var(--s-5); font-size: var(--t-sm); }
.page-hero__meta a { display: inline-flex; align-items: center; gap: 0.35rem; }

.crumbs { display: flex; flex-wrap: wrap; gap: 0.4rem; font-size: var(--t-sm); color: var(--c-ink-3); }
.crumbs a { color: var(--c-ink-2); text-decoration: none; }
.crumbs a:hover { color: var(--c-brand); text-decoration: underline; }
.crumbs li + li::before { content: '/'; margin-right: 0.4rem; color: var(--c-line-strong); }

.lib-toolbar {
  position: sticky;
  top: var(--h-header);
  z-index: 20;
  margin-block: var(--s-5) 0;
  padding-block: var(--s-3);
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}
.lib-toolbar__row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-3); }
.lib-toolbar__row + .lib-toolbar__row { margin-top: var(--s-3); }
.search {
  position: relative;
  flex: 1 1 18rem;
  max-width: 30rem;
}
.search .icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  width: 1.05rem;
  height: 1.05rem;
  transform: translateY(-50%);
  color: var(--c-ink-3);
  pointer-events: none;
}
.search input {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.5rem 1rem 0.5rem 2.6rem;
  border: 1px solid var(--c-control);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  color: var(--c-ink);
}
.search input::placeholder { color: var(--c-ink-3); opacity: 1; }
.search input:focus-visible { border-color: var(--c-brand); outline-offset: 1px; }
.search kbd {
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  padding: 0.05rem 0.4rem;
  border: 1px solid var(--c-line-strong);
  border-radius: 4px;
  font: var(--t-xs)/1.4 var(--f-mono);
  color: var(--c-ink-3);
  pointer-events: none;
}
.search input:focus ~ kbd, .search input:not(:placeholder-shown) ~ kbd { display: none; }
.chips { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; }
.chips__label { margin-right: 0.2rem; font: 700 var(--t-xs)/1 var(--f-body); letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-ink-3); }
.lib-count { margin-left: auto; font-size: var(--t-sm); color: var(--c-ink-3); }

.lib-year {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: var(--s-5);
  padding-block: var(--s-5);
  border-bottom: 1px solid var(--c-line);
}
.lib-year__label {
  position: sticky;
  top: calc(var(--h-header) + 8.5rem);
  align-self: start;
  font-family: var(--f-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1;
  color: var(--c-ink-3);
  font-variant-numeric: lining-nums tabular-nums;
}
.lib-year__list > li + li { margin-top: var(--s-5); padding-top: var(--s-5); border-top: 1px dashed var(--c-line); }
.lib-empty {
  padding: var(--s-7) var(--s-4);
  text-align: center;
  color: var(--c-ink-2);
}
.lib-empty .button { margin-top: var(--s-4); }
.lib-foot { padding-block: var(--s-6) var(--s-sec); color: var(--c-ink-3); font-size: var(--t-sm); }
@media (max-width: 700px) {
  .lib-toolbar { position: static; }
  .lib-year { grid-template-columns: minmax(0, 1fr); gap: var(--s-3); }
  .lib-year__label { position: static; font-size: 1.5rem; }
  .lib-count { margin-left: 0; width: 100%; }
}

/* 10 ── Paper pages ──────────────────────────────────────────────────────── */

.paper-hero { padding-block: clamp(1.75rem, 1.2rem + 2.5vw, 3rem) clamp(2rem, 1.4rem + 3vw, 3.5rem); border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(52rem 22rem at 92% -20%, color-mix(in srgb, var(--c-accent) 8%, transparent), transparent 70%),
    var(--c-bg);
}
.paper-hero__venue { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.75rem; margin-top: var(--s-5); }
.paper-hero__title {
  max-width: 56rem;
  margin-top: var(--s-3);
  font-family: var(--f-display);
  font-size: clamp(1.9rem, 1.35rem + 2.4vw, 3rem);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.02em;
}
.paper-hero__title span { color: var(--c-brand); }
.paper-byline { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; margin-top: var(--s-5); font-size: var(--t-md); color: var(--c-ink-2); }
.paper-byline .me { color: var(--c-ink); font-weight: 700; }
.paper-byline sup { margin-left: 0.1rem; font-size: 0.65em; color: var(--c-accent-strong); }
.paper-affil { margin-top: var(--s-2); font-size: var(--t-sm); color: var(--c-ink-3); }
.paper-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-top: var(--s-5); }

.paper-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17.5rem;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  padding-block: clamp(2rem, 1.2rem + 3vw, 3.5rem) var(--s-sec);
}
.paper-main > section + section { margin-top: var(--s-7); }
.paper-main h2 {
  font-family: var(--f-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--s-4);
}
.paper-aside { position: sticky; top: calc(var(--h-header) + 1.5rem); display: grid; gap: var(--s-5); font-size: var(--t-sm); }
.paper-aside h2 { margin-bottom: var(--s-3); }

.figure {
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background: var(--c-surface);
  overflow: hidden;
}
.figure + .figure { margin-top: var(--s-5); }
.figure__plate { position: relative; background: var(--c-figure); padding: clamp(0.75rem, 2.5vw, 1.5rem); }
.figure__plate > svg, .figure__plate > img { width: 100%; height: auto; max-height: 34rem; object-fit: contain; }
.figure__zoom {
  position: absolute;
  right: 0.6rem;
  top: 0.6rem;
  display: inline-grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid #c3cdd9;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.92);
  color: #334155;
  cursor: zoom-in;
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.figure:hover .figure__zoom, .figure__zoom:focus-visible { opacity: 1; }
@media (hover: none) { .figure__zoom { opacity: 1; } }
.figure__missing {
  display: none;
  padding: var(--s-6) var(--s-4);
  text-align: center;
  font-size: var(--t-sm);
  color: #475569;
}
.figure[data-broken] .figure__plate > img, .figure[data-broken] .figure__zoom { display: none; }
.figure[data-broken] .figure__missing { display: block; }
.figure figcaption {
  padding: var(--s-3) var(--s-4);
  border-top: 1px solid var(--c-line);
  font-size: var(--t-sm);
  line-height: 1.55;
  color: var(--c-ink-2);
}

.abstract {
  font-family: var(--f-display);
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--c-ink);
  max-width: var(--w-read);
  hanging-punctuation: first;
}
.abstract + .abstract { margin-top: 1em; }
.note {
  max-width: var(--w-read);
  margin-top: var(--s-4);
  padding: var(--s-3) var(--s-4);
  border-left: 3px solid var(--c-line-strong);
  background: var(--c-bg-soft);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-size: 0.95rem;
  color: var(--c-ink-2);
}

.steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-4); counter-reset: step; }
.steps--list { grid-template-columns: minmax(0, 1fr); }
.steps > li {
  counter-increment: step;
  position: relative;
  padding: var(--s-4) var(--s-4) var(--s-4) 3.5rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--c-surface);
}
.steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: var(--s-4);
  top: 1.05rem;
  font: 700 var(--t-sm)/1.4 var(--f-mono);
  color: var(--c-accent-strong);
}
.steps h3 { font-family: var(--f-display); font-size: 1.2rem; font-weight: 600; line-height: 1.3; }
.steps p { margin-top: 0.35rem; font-size: 0.98rem; color: var(--c-ink-2); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(11.5rem, 1fr)); gap: var(--s-3); }
.stats > li {
  padding: var(--s-4);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, var(--c-surface), var(--c-bg-soft));
}
.stat__v {
  display: block;
  font-family: var(--f-display);
  font-size: 2.1rem;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-brand);
  font-variant-numeric: lining-nums;
}
.stat__k { display: block; margin-top: 0.4rem; font-size: var(--t-sm); line-height: 1.45; color: var(--c-ink-2); }
.stats__note { margin-top: var(--s-3); font-size: var(--t-xs); color: var(--c-ink-3); }

.kv { border: 1px solid var(--c-line); border-radius: var(--r-md); background: var(--c-surface); overflow: hidden; }
.kv > div { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); gap: var(--s-3); padding: 0.75rem var(--s-4); }
.kv > div + div { border-top: 1px solid var(--c-line); }
.kv dt { color: var(--c-ink-3); font-size: var(--t-sm); }
.kv dd { min-width: 0; overflow-wrap: anywhere; }
.kv--stack > div { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; padding: 0.6rem var(--s-4); }
.kv--stack dt { font: 700 var(--t-xs)/1.4 var(--f-body); letter-spacing: 0.08em; text-transform: uppercase; }

.bibtex { position: relative; }
.bibtex pre {
  max-width: 100%;
  overflow-x: auto;
  padding: var(--s-4);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--c-bg-soft);
  font: 0.85rem/1.65 var(--f-mono);
  color: var(--c-ink);
  tab-size: 2;
}
.bibtex__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-2); margin-top: var(--s-3); }
.bibtex__status { font-size: var(--t-sm); color: var(--c-ink-3); }

.related > li + li { margin-top: var(--s-4); padding-top: var(--s-4); border-top: 1px solid var(--c-line); }
.related .pub__title { font-size: 1.15rem; }
.related .pub__venue { font-size: var(--t-sm); }

.aside-nav a { display: block; padding: 0.3rem 0 0.3rem 0.85rem; border-left: 2px solid var(--c-line); color: var(--c-ink-2); text-decoration: none; }
.aside-nav a:hover { color: var(--c-brand); border-left-color: var(--c-brand); }

@media (max-width: 980px) {
  .paper-layout { grid-template-columns: minmax(0, 1fr); }
  .paper-aside { position: static; grid-row: 2; }
  .aside-nav { display: none; }
}
@media (max-width: 620px) {
  .steps { grid-template-columns: minmax(0, 1fr); }
  .kv > div { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; }
  .abstract { font-size: 1.1rem; }
}

/* 11 ── CV blocks (experience, education, teaching, service, awards) ────── */

.cv { --cv-date: 10.5rem; --cv-gap: 3rem; max-width: 58rem; margin-inline: auto; }
.cv > li {
  position: relative;
  display: grid;
  grid-template-columns: var(--cv-date) minmax(0, 1fr);
  gap: var(--cv-gap);
  padding-block: var(--s-4) var(--s-5);
}
/* spine */
.cv > li::before {
  content: '';
  position: absolute;
  left: calc(var(--cv-date) + var(--cv-gap) / 2 - 1px);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--c-line);
}
.cv > li:first-child::before { top: 1.6rem; }
.cv > li:last-child::before { bottom: auto; height: 1.6rem; }
/* node */
.cv > li::after {
  content: '';
  position: absolute;
  left: calc(var(--cv-date) + var(--cv-gap) / 2 - 7px);
  top: 1.45rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 2.5px solid var(--c-brand);
  box-shadow: 0 0 0 4px var(--c-bg);
  transition: transform 220ms var(--ease), background-color 220ms var(--ease);
}
.sec--tint .cv > li::after { background: var(--c-bg-soft); box-shadow: 0 0 0 4px var(--c-bg-soft); }
.cv > li:hover::after { transform: scale(1.25); background: var(--c-brand); }
.cv > li:has(.cv__when > b)::after { background: var(--c-accent); border-color: var(--c-accent); }
@media (prefers-reduced-motion: no-preference) {
  .cv > li:has(.cv__when > b)::after { animation: node-pulse 2.6s ease-out infinite; }
  @keyframes node-pulse {
    0% { box-shadow: 0 0 0 4px var(--c-bg), 0 0 0 4px color-mix(in srgb, var(--c-accent) 55%, transparent); }
    70%, 100% { box-shadow: 0 0 0 4px var(--c-bg), 0 0 0 13px transparent; }
  }
}
.cv__when { text-align: right; }
.cv__when { font-size: var(--t-sm); color: var(--c-ink-3); font-variant-numeric: tabular-nums; padding-top: 0.2rem; }
.cv__when b { display: block; color: var(--c-accent-strong); font-size: var(--t-xs); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.15rem; }
.cv__title { font-family: var(--f-display); font-size: 1.3rem; font-weight: 600; line-height: 1.3; }
.cv__role { margin-top: 0.2rem; color: var(--c-ink); }
.cv__meta { margin-top: 0.1rem; font-size: var(--t-sm); color: var(--c-ink-3); }
.cv__notes { margin-top: var(--s-3); font-size: 0.98rem; color: var(--c-ink-2); }
.cv__notes > li { position: relative; padding-left: 1.1rem; }
.cv__notes > li + li { margin-top: 0.3rem; }
.cv__notes > li::before { content: ''; position: absolute; left: 0.15rem; top: 0.65em; width: 0.35rem; height: 0.35rem; border-radius: 50%; background: var(--c-line-strong); }
.cv__project { margin-top: var(--s-3); font-size: 0.98rem; color: var(--c-ink); }
.cv__project + .cv__notes { margin-top: 0.35rem; }
.cv__logo { height: 1.75rem; width: auto; margin-bottom: var(--s-2); }
.cv__logo--tall { height: 2.75rem; }
:root[data-theme='dark'] .cv__logo--plate { background: #fff; border-radius: 6px; padding: 3px 6px; box-sizing: content-box; }
@media (max-width: 640px) {
  .cv > li { grid-template-columns: minmax(0, 1fr); gap: 0.35rem; padding-left: 1.75rem; }
  .cv > li::before { left: 6px; }
  .cv > li::after { left: 0; top: 1.3rem; }
  .cv__when { text-align: left; }
}

.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }
.split--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 860px) { .split, .split--3 { grid-template-columns: minmax(0, 1fr); } }

.panel {
  padding: clamp(1.125rem, 3vw, 1.75rem);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background: var(--c-surface);
}
.panel__title { font-family: var(--f-display); font-size: 1.35rem; font-weight: 600; }
.panel__lede { margin-top: 0.3rem; font-size: var(--t-sm); color: var(--c-ink-3); }

.rows { margin-top: var(--s-4); }
.rows > li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.15rem var(--s-4);
  align-items: baseline;
  padding-block: 0.7rem;
  border-top: 1px solid var(--c-line);
}
.rows__main { color: var(--c-ink); }
.rows__main small { display: block; font-size: var(--t-sm); color: var(--c-ink-3); }
.rows__side { font-size: var(--t-sm); color: var(--c-ink-3); white-space: nowrap; font-variant-numeric: tabular-nums; }
.rows__code {
  display: inline-block;
  min-width: 5.2rem;
  margin-right: 0.5rem;
  font: 700 var(--t-xs)/1.4 var(--f-mono);
  color: var(--c-brand);
}
.rows--courses > li { grid-template-columns: 5.4rem minmax(0, 1fr); gap: 0.1rem var(--s-3); }
.rows--courses .rows__code { min-width: 0; margin: 0; padding-top: 0.25em; grid-row: span 2; }
.rows--courses .rows__side { white-space: normal; }

.ticks > li { position: relative; padding-left: 1.6rem; color: var(--c-ink-2); }
.ticks > li + li { margin-top: 0.5rem; }
.ticks > li::before {
  content: '';
  position: absolute;
  left: 0.15rem;
  top: 0.5em;
  width: 0.7rem;
  height: 0.4rem;
  border-left: 2px solid var(--c-accent);
  border-bottom: 2px solid var(--c-accent);
  transform: rotate(-45deg);
}
.ticks strong { color: var(--c-ink); }
.ticks--row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-3) var(--s-5); }
.ticks--row > li + li { margin-top: 0; }
@media (max-width: 860px) { .ticks--row { grid-template-columns: minmax(0, 1fr); } }

.honors { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-4); }
.honor { padding: var(--s-5); border: 1px solid var(--c-line); border-radius: var(--r-lg); background: var(--c-surface); }
.honor__when { font: 700 var(--t-xs)/1.4 var(--f-body); letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-accent-strong); }
.honor__title { margin-top: 0.4rem; font-family: var(--f-display); font-size: 1.3rem; font-weight: 600; line-height: 1.25; }
.honor__org { margin-top: 0.3rem; font-size: var(--t-sm); color: var(--c-ink-3); }
.honor__desc { margin-top: var(--s-3); font-size: 0.98rem; color: var(--c-ink-2); }
@media (max-width: 860px) { .honors { grid-template-columns: minmax(0, 1fr); } }

.inline-list { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: var(--s-3); }

/* 12 ── Forms & contact ──────────────────────────────────────────────────── */

.contact { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(1.5rem, 5vw, 4rem); align-items: start; }
@media (max-width: 860px) { .contact { grid-template-columns: minmax(0, 1fr); } }
.contact__list { margin-top: var(--s-5); }
.contact__list > div { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: var(--s-3); padding-block: 0.7rem; border-top: 1px solid var(--c-line); }
.contact__list > div:last-child { border-bottom: 1px solid var(--c-line); }
.contact__list dt { font-size: var(--t-sm); color: var(--c-ink-3); padding-top: 0.1rem; }
.contact__list dd { min-width: 0; overflow-wrap: anywhere; }
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-left: 0.5rem;
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--c-control);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--c-ink-2);
  font-size: var(--t-xs);
  cursor: pointer;
}
.copy-btn:hover { border-color: var(--c-brand); color: var(--c-brand); }
.copy-btn[data-copied] { border-color: var(--c-brand); color: var(--c-brand); font-weight: 700; }

.form { display: grid; gap: var(--s-4); }
.form__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-4); }
@media (max-width: 560px) { .form__row { grid-template-columns: minmax(0, 1fr); } }
.field label { display: block; margin-bottom: 0.35rem; font-size: var(--t-sm); font-weight: 700; color: var(--c-ink); }
.field input, .field textarea {
  width: 100%;
  min-height: 2.9rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--c-control);
  border-radius: var(--r-md);
  background: var(--c-surface);
  color: var(--c-ink);
}
.field textarea { min-height: 9rem; resize: vertical; line-height: 1.55; }
.field input::placeholder, .field textarea::placeholder { color: var(--c-ink-3); opacity: 1; }
.field input:focus-visible, .field textarea:focus-visible { border-color: var(--c-brand); outline-offset: 1px; }
.field [aria-invalid='true'] { border-color: #c0392b; }
.field__error { margin-top: 0.3rem; font-size: var(--t-sm); color: #b3261e; }
:root[data-theme='dark'] .field__error { color: #ffb4a9; }
:root[data-theme='dark'] .field [aria-invalid='true'] { border-color: #ffb4a9; }
.form__status { font-size: var(--t-sm); color: var(--c-ink-2); min-height: 1.4em; }
.form__status[data-state='ok'] { color: var(--c-brand); font-weight: 700; }
.form__status[data-state='error'] { color: #b3261e; font-weight: 700; }
:root[data-theme='dark'] .form__status[data-state='error'] { color: #ffb4a9; }
.form__hp { position: absolute; left: -200vw; width: 1px; height: 1px; overflow: hidden; }

/* 13 ── Blog ─────────────────────────────────────────────────────────────── */

.posts { max-width: 52rem; }
.posts > li { padding-block: var(--s-5); border-top: 1px solid var(--c-line); }
.posts > li:last-child { border-bottom: 1px solid var(--c-line); }
.post__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem 0.75rem; font-size: var(--t-sm); color: var(--c-ink-3); }
.post__title { margin-top: 0.35rem; font-family: var(--f-display); font-size: 1.5rem; font-weight: 600; line-height: 1.25; }
.post__title a { color: inherit; text-decoration: none; }
.post__title a:hover { color: var(--c-brand); text-decoration: underline; text-decoration-thickness: 1px; }
.post__excerpt { margin-top: 0.5rem; color: var(--c-ink-2); max-width: 44rem; }
.post__tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.75rem; }

.article { max-width: var(--w-read); font-size: 1.125rem; line-height: 1.75; color: var(--c-ink-2); }
.article > * + *, .article > section > * + * { margin-top: 1.15em; }
.article > section + section { margin-top: 2.6em; }
.article h2 { margin-top: 2.2em; font-family: var(--f-display); font-size: 1.7rem; color: var(--c-ink); letter-spacing: -0.01em; }
.article h3 { margin-top: 1.8em; font-family: var(--f-display); font-size: 1.3rem; color: var(--c-ink); }
.article > section > h2 + *, .article > section > h3 + *, .article h2 + *, .article h3 + * { margin-top: 0.6em; }
.article .callout h3 { margin-top: 0; font-size: 1.15rem; }
.article ul, .article ol { padding-left: 1.35rem; }
.article ul { list-style: disc; }
.article ol { list-style: decimal; }
.article li + li { margin-top: 0.4em; }
.article li::marker { color: var(--c-accent); }
.article strong { color: var(--c-ink); }
.article blockquote {
  padding: var(--s-2) 0 var(--s-2) var(--s-5);
  border-left: 3px solid var(--c-accent);
  font-family: var(--f-display);
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--c-ink);
}
.article blockquote cite { display: block; margin-top: 0.5rem; font: var(--t-sm)/1.5 var(--f-body); font-style: normal; color: var(--c-ink-3); }
.article .callout { padding: var(--s-4) var(--s-5); border: 1px solid var(--c-line); border-radius: var(--r-md); background: var(--c-bg-soft); }
.article .callout > * + * { margin-top: 0.5em; }
.article pre { overflow-x: auto; padding: var(--s-4); border: 1px solid var(--c-line); border-radius: var(--r-md); background: var(--c-bg-soft); font: 0.9rem/1.6 var(--f-mono); color: var(--c-ink); }
.article .table { overflow-x: auto; }
.article table { width: 100%; border-collapse: collapse; font-size: 0.98rem; font-variant-numeric: tabular-nums; }
.article th, .article td { padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--c-line); text-align: left; }
.article th { font-size: var(--t-sm); color: var(--c-ink-3); font-weight: 700; border-bottom-color: var(--c-line-strong); }
.article td { color: var(--c-ink); }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 15rem; gap: clamp(2rem, 5vw, 4rem); align-items: start; padding-block: clamp(2rem, 1.2rem + 3vw, 3.5rem) var(--s-sec); }
.article-layout > aside { position: sticky; top: calc(var(--h-header) + 1.5rem); display: grid; gap: var(--s-5); font-size: var(--t-sm); }
@media (max-width: 900px) { .article-layout { grid-template-columns: minmax(0, 1fr); } .article-layout > aside { position: static; grid-row: 1; } .article-layout .aside-nav { display: block; } }
.byline { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 1rem; margin-top: var(--s-4); font-size: var(--t-sm); color: var(--c-ink-3); }
.byline strong { color: var(--c-ink); }
.subscribe { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: flex-end; margin-top: var(--s-4); }
.subscribe .field { flex: 1 1 16rem; max-width: 24rem; }
.article :not(pre) > code { padding: 0.1em 0.35em; border-radius: 4px; background: var(--c-bg-sunk); font: 0.9em var(--f-mono); color: var(--c-ink); }

/* 14 ── Dialogs (cite, figure zoom) ──────────────────────────────────────── */

.ds dialog {
  margin: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background: var(--c-surface);
  color: var(--c-ink);
  box-shadow: 0 30px 80px -20px rgba(8, 15, 30, 0.55);
}
.ds dialog::backdrop { background: rgba(8, 15, 30, 0.55); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); }

.cite-dialog { width: min(42rem, calc(100vw - 2rem)); padding: var(--s-5); }
.cite-dialog__header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--s-4); }
.cite-dialog__title { font-family: var(--f-display); font-size: 1.3rem; font-weight: 600; line-height: 1.3; }
.cite-dialog__tabs { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: var(--s-4); }
.cite-dialog__tab {
  min-height: 2.25rem;
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--c-control);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--c-ink-2);
  font-size: var(--t-sm);
  cursor: pointer;
}
.cite-dialog__tab[aria-selected='true'] { background: var(--c-brand); border-color: var(--c-brand); color: var(--c-on-brand); font-weight: 700; }
.cite-dialog__output {
  max-height: 45vh;
  overflow: auto;
  margin-top: var(--s-3);
  padding: var(--s-4);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--c-bg-soft);
  font: 1rem/1.6 var(--f-body);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.cite-dialog__output--mono { font: 0.85rem/1.65 var(--f-mono); white-space: pre; overflow-wrap: normal; }
.cite-dialog__actions { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-4); }
.cite-dialog__status { min-height: 1.4em; margin-top: var(--s-2); font-size: var(--t-sm); color: var(--c-brand); }
.cite-dialog__status--error { color: #b3261e; }

.zoom-dialog { width: calc(100vw - 2rem); max-width: 90rem; max-height: calc(100vh - 2rem); padding: var(--s-4); overflow: auto; }
.zoom-dialog__plate { background: var(--c-figure); border-radius: var(--r-md); padding: var(--s-4); }
.zoom-dialog__plate > svg, .zoom-dialog__plate > img { width: 100%; height: auto; }
.zoom-dialog__bar { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--s-4); margin-bottom: var(--s-3); }
.zoom-dialog__cap { font-size: var(--t-sm); color: var(--c-ink-2); max-width: 60rem; }

/* 15 ── Utilities ────────────────────────────────────────────────────────── */

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.ds [hidden] { display: none !important; }
.center { text-align: center; }
.mt-4 { margin-top: var(--s-4); }
.mt-5 { margin-top: var(--s-5); }
.mt-6 { margin-top: var(--s-6); }
.stack--5 { --stack: var(--s-5); }
.muted { color: var(--c-ink-3); }

.notfound { display: grid; place-items: center; min-height: 60vh; padding-block: var(--s-sec); text-align: center; }
.notfound__code { font-family: var(--f-display); font-size: clamp(4.5rem, 3rem + 9vw, 9rem); font-weight: 600; line-height: 1; color: var(--c-brand); letter-spacing: -0.04em; }
.notfound h1 { margin-top: var(--s-3); font-family: var(--f-display); font-size: var(--t-xl); }
.notfound p { max-width: 34rem; margin: var(--s-4) auto 0; color: var(--c-ink-2); }
.notfound__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s-3); margin-top: var(--s-5); }

/* The legacy accessibility overlay that js/main.js injects flips classes only
   the legacy stylesheet understands, so on a page built with this system it
   would be a panel of switches that do nothing. Hidden here on purpose;
   Projects pages do not load this file and keep it. */
#accessibility-menu-toggle, #accessibility-menu, #reading-guide { display: none !important; }

/* 16 ── Motion ───────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: no-preference) {
  .ds [data-reveal] {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 500ms var(--ease), transform 500ms var(--ease);
  }
  .ds [data-reveal][data-revealed] { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .ds-root { scroll-behavior: auto; }
  .ds *, .ds *::before, .ds *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}
/* Without JavaScript nothing is ever hidden waiting for an observer. */
html:not(.js) .ds [data-reveal] { opacity: 1; transform: none; }

::view-transition-old(root), ::view-transition-new(root) { animation-duration: 220ms; }

/* 17 ── Print ────────────────────────────────────────────────────────────── */

@media print {
  .site-header, .site-footer, .skip-link, .lib-toolbar, .paper-actions, .bibtex__actions,
  .figure__zoom, .intro__actions, .pub__links, .threads__readout, .aside-nav, .nav-toggle { display: none !important; }
  .ds { color: #000; font-size: 11pt; }
  .ds a { color: #000; text-decoration: none; }
  .sec, .intro, .page-hero, .paper-hero { padding-block: 1.25rem; background: none !important; border: 0; }
  .paper-layout { display: block; }
  .ds [data-reveal] { opacity: 1 !important; transform: none !important; }
  .pub, .cv > li, .figure, .steps > li { break-inside: avoid; }
}