/* hosseinmohebbi.com
   Type: Newsreader (text & display) · Inter (interface) · JetBrains Mono (code)
   One accent, used sparingly. Light and dark themes share every token name. */

/* ------------------------------------------------------------------ fonts */

@font-face {
  font-family: "Newsreader";
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url("../fonts/newsreader-latin-opsz.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: italic;
  font-weight: 200 800;
  font-display: swap;
  src: url("../fonts/newsreader-latin-opsz-italic.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;
}
/* Newsreader has no Greek; borrow Source Serif 4's for the maths (ε, π, τ …).
   Descriptors must match the Latin faces exactly so the two form one family. */
@font-face {
  font-family: "Newsreader";
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url("../fonts/source-serif-4-greek.woff2") format("woff2");
  unicode-range: U+0370-03FF;
}
@font-face {
  font-family: "Newsreader";
  font-style: italic;
  font-weight: 200 800;
  font-display: swap;
  src: url("../fonts/source-serif-4-greek-italic.woff2") format("woff2");
  unicode-range: U+0370-03FF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin-wght.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: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-latin-wght.woff2") format("woff2");
}

/* ----------------------------------------------------------------- tokens */

:root {
  --bg: #fbfaf7;
  --bg-raised: #ffffff;
  --panel: #f3f1eb;
  --ink: #1a1a18;
  --ink-2: #3d3b36;
  --muted: #6f6c64;
  --faint: #a29e94;
  --rule: #e6e2d8;
  --rule-strong: #d3cec1;
  --accent: #c43d1e;
  --accent-soft: rgba(196, 61, 30, 0.09);
  --accent-line: rgba(196, 61, 30, 0.45);
  --on-accent: #ffffff;
  --blue: #2e5f93;
  --sel: rgba(196, 61, 30, 0.16);
  --fig-surface: #fdfcf9;
  --fig-fill: #e8e4da;
  --fig-ink: #bdb7aa;

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --rail: 10.5rem;
  --gap: 3.5rem;
  --pad: clamp(1.25rem, 4.5vw, 3rem);
  --page: 70rem;
  --measure: 39rem;
  --masthead: 3.5rem;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #131312;
  --bg-raised: #1a1a18;
  --panel: #1b1b19;
  --ink: #eeece6;
  --ink-2: #cfccc4;
  --muted: #9b978d;
  --faint: #6e6b63;
  --rule: #2a2926;
  --rule-strong: #3b3a35;
  --accent: #ff7a57;
  --accent-soft: rgba(255, 122, 87, 0.11);
  --accent-line: rgba(255, 122, 87, 0.5);
  --on-accent: #1a0d08;
  --blue: #86afe0;
  --sel: rgba(255, 122, 87, 0.26);
  --fig-surface: #20201d;
  --fig-fill: #2f2e2a;
  --fig-ink: #4e4c46;
  color-scheme: dark;
}

@media (max-width: 1080px) {
  :root { --rail: 8.5rem; --gap: 2.5rem; }
}

/* ------------------------------------------------------------------- base */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--masthead) + 1.25rem);
  background: var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.62;
  font-optical-sizing: auto;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s ease, color 0.25s ease;
}

@media (min-width: 1280px) {
  body { font-size: 1.1875rem; }
}

::selection { background: var(--sel); color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: var(--rule-strong);
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}
a:hover { text-decoration-color: var(--accent); }

p { margin: 0; }
em, i { font-style: italic; }
b, strong { font-weight: 600; color: var(--ink); }
sub, sup { font-size: 0.72em; line-height: 0; }

code {
  font-family: var(--mono);
  font-size: 0.8em;
  background: var(--panel);
  border-radius: 4px;
  padding: 0.12em 0.38em;
  white-space: nowrap;
}

img { max-width: 100%; }

.icon { flex: none; display: block; }

.skip {
  position: absolute;
  left: var(--pad);
  top: -4rem;
  z-index: 100;
  background: var(--ink);
  color: var(--bg);
  font: 500 0.875rem/1 var(--sans);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  text-decoration: none;
}
.skip:focus { top: 0.75rem; }

/* ------------------------------------------------------------------- grid */

.grid {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  column-gap: var(--gap);
  max-width: calc(var(--page) + 2 * var(--pad));
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* --------------------------------------------------------------- masthead */

.masthead {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  -webkit-backdrop-filter: saturate(1.6) blur(12px);
  backdrop-filter: saturate(1.6) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background-color 0.25s ease;
}
.masthead.is-scrolled { border-bottom-color: var(--rule); }

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: var(--masthead);
  max-width: calc(var(--page) + 2 * var(--pad));
  margin-inline: auto;
  padding-inline: var(--pad);
}

.masthead__name {
  font: 500 1.0625rem/1 var(--serif);
  letter-spacing: -0.005em;
  color: var(--ink);
  text-decoration: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.js .page-home .masthead__name { opacity: 0; transform: translateY(6px); pointer-events: none; }
.js .page-home.show-name .masthead__name { opacity: 1; transform: none; pointer-events: auto; }

.masthead__nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 1.75rem);
  font: 500 0.8125rem/1 var(--sans);
}
.masthead__nav a {
  color: var(--muted);
  text-decoration: none;
  padding-block: 0.5rem;
  position: relative;
}
.masthead__nav a:hover,
.masthead__nav a.is-current,
.masthead__nav a[aria-current="page"] { color: var(--ink); }
.masthead__nav a.is-current::after,
.masthead__nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.1rem;
  height: 1px;
  background: var(--accent);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  margin-right: -0.4rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s ease, background-color 0.2s ease;
}
.theme-toggle:hover { color: var(--ink); background: var(--panel); }
.theme-toggle__sun { display: none; }
:root[data-theme="dark"] .theme-toggle__sun { display: block; }
:root[data-theme="dark"] .theme-toggle__moon { display: none; }

/* Switching theme: js/site.js cross-fades the whole page as one picture, and
   holds off per-element transitions so nothing changes out of step. */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.5s;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}
.theme-switching,
.theme-switching *,
.theme-switching *::before,
.theme-switching *::after { transition: none !important; }

/* ------------------------------------------------------------------- hero */

.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(3.25rem, 9vw, 7rem) clamp(0.5rem, 2vw, 1.5rem);
}

/* Contour-map backdrop, drawn by js/landscape.js. It runs up under the masthead
   and fades out before the first section. */
.hero__field {
  position: absolute;
  top: calc(-1 * var(--masthead));
  left: 0;
  z-index: -1;
  width: 100%;
  height: calc(100% + var(--masthead) + 3rem);
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.4s ease;
  -webkit-mask-image: linear-gradient(to bottom, #000 45%, transparent 96%);
  mask-image: linear-gradient(to bottom, #000 45%, transparent 96%);
}
.hero__field.is-on { opacity: 1; }

.hero__aside { padding-top: 0.55rem; }

.hero__portrait {
  display: block;
  width: 100%;
  max-width: 10.5rem;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 3px;
  background: var(--panel);
  filter: saturate(0.92);
}
/* One photo per theme. */
.hero__portrait--dark { display: none; }
:root[data-theme="dark"] .hero__portrait--light { display: none; }
:root[data-theme="dark"] .hero__portrait--dark { display: block; }

.hero__name {
  margin: 0;
  font-family: var(--serif);
  font-weight: 380;
  font-size: clamp(2.75rem, 1.5rem + 4.6vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.028em;
  color: var(--ink);
  text-wrap: balance;
}

.hero__lede {
  margin-top: clamp(1.25rem, 2.5vw, 1.75rem);
  max-width: 35rem;
  font-size: clamp(1.3rem, 1.05rem + 0.85vw, 1.72rem);
  font-weight: 360;
  line-height: 1.36;
  letter-spacing: -0.006em;
  color: var(--ink);
  text-wrap: pretty;
}
.hero__lede em { font-weight: 420; }

.hero__affil {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
  padding: 0;
  font: 400 0.9375rem/1.55 var(--sans);
  color: var(--muted);
}
.hero__affil li { display: inline; }
.hero__affil li + li::before { content: "·"; margin-inline: 0.55em; color: var(--faint); }

.hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  font: 500 0.875rem/1 var(--sans);
}
.hero__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-block: 0.55rem;
  color: var(--ink);
  text-decoration: none;
}
.hero__links a .icon { color: var(--muted); transition: color 0.2s ease; }
.hero__links a span {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.3em;
  text-decoration-color: var(--rule-strong);
  transition: text-decoration-color 0.2s ease;
}
.hero__links a:hover span { text-decoration-color: var(--accent); }
.hero__links a:hover .icon { color: var(--accent); }

/* --------------------------------------------------------------- sections */

.section { padding-top: clamp(3.25rem, 7vw, 5.5rem); }

.section__label {
  margin: 0;
  padding-top: 0.95rem;
  border-top: 1px solid var(--ink);
  font: 600 0.71875rem/1.3 var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}
.section__label span {
  display: block;
  position: sticky;
  top: calc(var(--masthead) + 1.25rem);
}

.section__body {
  min-width: 0;
  padding-top: 1.35rem;
  border-top: 1px solid var(--rule);
}

.kicker {
  margin: 0 0 0.65rem;
  font: 600 0.71875rem/1.3 var(--sans);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
}

.subhead {
  margin: 2.5rem 0 0.35rem;
  font: italic 400 1.0625rem/1.3 var(--serif);
  color: var(--muted);
}
.section__body > .subhead:first-child { margin-top: 0; }

.prose { max-width: var(--measure); }
.prose p { text-wrap: pretty; }
.prose p + p { margin-top: 1em; }
.prose a { text-decoration-color: var(--accent-line); }
.prose a:hover { text-decoration-color: var(--accent); }
.prose--lead p:first-child { font-size: 1.12em; line-height: 1.5; color: var(--ink); }

/* ------------------------------------------------------------------- news */

.news { list-style: none; margin: 0; padding: 0; max-width: 46rem; }
.news li {
  display: grid;
  grid-template-columns: 5.25rem minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: 0.45rem;
}
.news time {
  font: 500 0.8125rem/2 var(--sans);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.news p { text-wrap: pretty; }
.news a { text-decoration-color: var(--accent-line); }

/* --------------------------------------------------------------- research */

.thread + .thread {
  margin-top: clamp(3.5rem, 8vw, 6rem);
  padding-top: clamp(2.5rem, 5vw, 3.5rem);
  border-top: 1px solid var(--rule);
}

.thread__title {
  margin: 0 0 1rem;
  max-width: 34rem;
  font-family: var(--serif);
  font-weight: 440;
  font-size: clamp(1.55rem, 1.2rem + 1.05vw, 2.1rem);
  line-height: 1.14;
  letter-spacing: -0.016em;
  color: var(--ink);
  text-wrap: balance;
}

.thread__paper { margin-top: 1.4rem; }
.thread__paper a {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.65rem;
  max-width: 100%;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  font: 500 0.875rem/1.4 var(--sans);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.thread__paper a:hover { border-color: var(--ink); background: var(--bg-raised); }
.thread__paper-k {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.thread__paper-t { font: italic 450 1rem/1.35 var(--serif); }
.thread__paper-v { color: var(--accent); font-size: 0.8125rem; }

/* ---------------------------------------------------------------- figures */

.fig { margin: 2.25rem 0 0; }

.fig__panel {
  position: relative;
  padding: clamp(1rem, 3vw, 2rem);
  background: var(--panel);
  border-radius: 10px;
  transition: background-color 0.25s ease;
}

.fig figcaption {
  max-width: 44rem;
  margin-top: 0.9rem;
  font: 400 0.84375rem/1.6 var(--sans);
  color: var(--muted);
  text-wrap: pretty;
}
.fig figcaption b { font-weight: 600; color: var(--ink); }
.fig figcaption i,
.legend i,
.traj__t i,
.traj__tau i { font-family: var(--serif); font-size: 1.1em; }

.fig__label {
  margin: 0;
  font: 600 0.65625rem/1.2 var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.fig__replay {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
  font: 500 0.6875rem/1 var(--sans);
  letter-spacing: 0.03em;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s ease, color 0.2s ease, border-color 0.2s ease;
}
.fig__replay:not([hidden]) { opacity: 1; }
.fig__replay:hover { color: var(--ink); border-color: var(--ink); }

.fig__hint { display: none; }

/* SVG text inherits page fonts through these classes. */
.fig-label {
  font: 600 9.5px var(--sans);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  fill: var(--muted);
}
.fig-label--c { text-anchor: middle; }

/* Figure 1 · trajectory */

.traj {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 13rem;
  gap: clamp(1rem, 2.5vw, 1.75rem);
  align-items: center;
}
.traj__screen { display: block; width: 100%; height: auto; overflow: visible; }

.traj__log ol { list-style: none; margin: 0.6rem 0 0; padding: 0; }
.traj__log li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding-block: 0.36rem;
  border-bottom: 1px dashed var(--rule-strong);
  font: 400 0.71875rem/1.4 var(--mono);
  color: var(--ink-2);
  transition: color 0.3s ease;
}
.traj__log code { background: none; padding: 0; font-size: inherit; white-space: normal; overflow-wrap: anywhere; }
.traj__t { flex: none; width: 1.4rem; font: 400 0.9375rem/1 var(--serif); color: var(--muted); }
.is-armed .traj__log li { color: var(--faint); }
.is-armed .traj__log li.is-done { color: var(--ink-2); }
.is-armed .traj__log li.is-current { color: var(--accent); }
.is-armed .traj__log li.is-current .traj__t { color: var(--accent); }
.traj__tau { margin-top: 0.85rem; font: 400 0.8125rem/1.4 var(--sans); color: var(--muted); }

.tr-window { fill: var(--fig-surface); stroke: var(--rule-strong); stroke-width: 1; }
.tr-rule { fill: none; stroke: var(--rule); stroke-width: 1; }
.tr-fill { fill: var(--fig-fill); }
.tr-ink { fill: var(--fig-ink); }
.tr-title { font: 500 10.5px var(--sans); fill: var(--muted); text-anchor: middle; }
.tr-field { fill: var(--bg); stroke: var(--rule-strong); stroke-width: 1; transition: stroke 0.25s ease; }
.tr-field.is-focus { stroke: var(--accent); stroke-width: 1.4; }
.tr-glass { fill: none; stroke: var(--faint); stroke-width: 1.4; stroke-linecap: round; }
.tr-placeholder { font: 400 12px var(--sans); fill: var(--faint); }
.tr-query { font: 400 11.5px var(--mono); fill: var(--ink); }
.tr-caret { fill: var(--accent); }
.tr-save rect { fill: var(--bg); stroke: var(--rule-strong); transition: fill 0.25s ease, stroke 0.25s ease; }
.tr-save text { font: 600 10.5px var(--sans); fill: var(--ink-2); text-anchor: middle; transition: fill 0.25s ease; }
.tr-save.is-on rect { fill: var(--accent); stroke: var(--accent); }
.tr-save.is-on text { fill: var(--on-accent); }
.tr-rows { transition: transform 0.65s cubic-bezier(0.3, 0.7, 0.2, 1); }
.tr-row { transition: opacity 0.35s ease; }
.tr-row.is-off { opacity: 0; }
.tr-row__bg { fill: transparent; stroke: transparent; transition: fill 0.25s ease, stroke 0.25s ease; }
.tr-row.is-picked .tr-row__bg { fill: var(--accent-soft); stroke: var(--accent-line); }
.tr-star { fill: none; stroke: var(--faint); stroke-width: 1.2; stroke-linejoin: round; transition: fill 0.25s ease, stroke 0.25s ease; }
.tr-row.is-picked.is-saved .tr-star { fill: var(--accent); stroke: var(--accent); }
.tr-trail {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-dasharray: 1 1;
  stroke-dashoffset: 0;
  opacity: 0.6;
}
.tr-marker__dot { transform-box: fill-box; transform-origin: center; transition: transform 0.35s cubic-bezier(0.3, 1.5, 0.5, 1), opacity 0.2s ease; }
.tr-marker.is-off .tr-marker__dot { transform: scale(0.2); opacity: 0; }
.tr-marker circle { fill: var(--accent); stroke: var(--fig-surface); stroke-width: 1.5; }
.tr-marker text { font: 700 9px var(--sans); fill: var(--on-accent); text-anchor: middle; dominant-baseline: middle; }
.tr-ripple { fill: none; stroke: var(--accent); stroke-width: 1.5; }
.tr-wheel path { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.tr-cursor path { fill: var(--ink); stroke: var(--fig-surface); stroke-width: 1.3; stroke-linejoin: round; }

/* Figure 2 · Image-POSER */

.poser__svg { display: block; width: 100%; height: auto; overflow: visible; }
.ps-card { fill: var(--fig-surface); stroke: var(--rule-strong); }
.ps-prompt { font: italic 400 12.5px var(--serif); fill: var(--ink-2); }
.ps-chip rect { fill: var(--fig-surface); stroke: var(--rule-strong); transition: fill 0.3s ease, stroke 0.3s ease; }
.ps-chip circle { fill: var(--fig-fill); transition: fill 0.3s ease; }
.ps-chip__n { font: 700 8.5px var(--sans); fill: var(--muted); text-anchor: middle; dominant-baseline: middle; }
.ps-chip__t { font: 500 11.5px var(--sans); fill: var(--ink-2); }
.ps-chip.is-done circle { fill: var(--fig-ink); }
.ps-chip.is-done .ps-chip__n { fill: var(--fig-surface); }
.ps-chip.is-active rect { fill: var(--accent-soft); stroke: var(--accent); }
.ps-chip.is-active circle { fill: var(--accent); }
.ps-chip.is-active .ps-chip__n { fill: var(--on-accent); }
.ps-edge { fill: none; stroke: var(--rule-strong); stroke-width: 1.2; transition: stroke 0.3s ease; }
.ps-edge.is-active { stroke: var(--accent); stroke-width: 1.6; }
.ps-edge--reward { stroke-dasharray: 3 4; }
.ps-policy circle { fill: var(--fig-surface); stroke: var(--ink); stroke-width: 1.4; transition: stroke 0.25s ease, fill 0.25s ease; }
.ps-policy.is-pulse circle { stroke: var(--accent); fill: var(--accent-soft); }
.ps-math { font-family: var(--serif); font-style: italic; }
.ps-pi { font-size: 27px; fill: var(--ink); text-anchor: middle; }
.ps-math--label { font-size: 12.5px; text-transform: none; letter-spacing: 0; fill: var(--ink-2); }
.ps-sub { font-size: 9.5px; font-family: var(--serif); font-style: italic; }
.ps-sub--label { font-size: 8.5px; text-transform: none; letter-spacing: 0; fill: var(--ink-2); }
.ps-reward { font: italic 15px var(--serif); fill: var(--accent); }
.ps-expert rect { fill: var(--fig-surface); stroke: var(--rule-strong); transition: fill 0.3s ease, stroke 0.3s ease; }
.ps-expert text { font: 500 11.5px var(--sans); fill: var(--ink-2); text-anchor: middle; }
.ps-expert.is-active rect { fill: var(--accent-soft); stroke: var(--accent); }
.ps-expert.is-active text { fill: var(--ink); }
.ps-blank { fill: var(--fig-fill); }
.ps-frame { fill: none; stroke: var(--rule-strong); }
.ps-wash { opacity: 0; transition: opacity 0.9s ease; }
.ps-wash.is-on { opacity: 1; }
.ps-critic rect { fill: var(--fig-surface); stroke: var(--rule-strong); transition: fill 0.25s ease, stroke 0.25s ease; }
.ps-critic text { font: 500 11.5px var(--sans); fill: var(--ink-2); text-anchor: middle; }
.ps-critic.is-active rect { fill: var(--accent-soft); stroke: var(--accent); }
.ps-token { fill: var(--accent); }

/* Figure 3 · CRDA */

.crda__svg { display: block; width: 100%; height: auto; overflow: visible; touch-action: pan-y; }
.crda__svg:focus-visible { outline-offset: 6px; }
.cr-axis { fill: none; stroke: var(--rule-strong); stroke-width: 1.2; }
.cr-axis-label { font: italic 15px var(--serif); fill: var(--muted); }
.cr-curve { fill: none; stroke: var(--ink); stroke-width: 1.6; }
.cr-shifted { fill: none; stroke: var(--accent); stroke-width: 1.25; stroke-dasharray: 4 5; opacity: 0.6; }
.cr-curve-label { font: 15px var(--serif); fill: var(--ink-2); }
.cr-shift-label { font: 15px var(--serif); fill: var(--accent); }
.cr-obs { fill: var(--blue); opacity: 0.78; transition: opacity 0.2s ease; }
.cr-obs.is-sel { opacity: 1; }
.cr-cfpt { fill: var(--panel); stroke: var(--accent); stroke-width: 1.8; }
.cr-resid { stroke: var(--accent); stroke-width: 2.2; stroke-linecap: round; }
.cr-resid--cf { stroke-width: 1.4; opacity: 0.75; }
.cr-foot { fill: var(--ink); }
.cr-ring { fill: none; stroke: var(--accent); stroke-width: 1.4; }
.cr-eps { font: italic 16px var(--serif); fill: var(--accent); }
.cr-tick { stroke: var(--blue); stroke-width: 2.2; stroke-linecap: round; }
.cr-tick--cf { stroke: var(--accent); stroke-width: 1.5; }
.cr-hit { fill: transparent; cursor: crosshair; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.5rem;
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  font: 400 0.8125rem/1.5 var(--sans);
  color: var(--muted);
}
.legend__sw { display: inline-block; vertical-align: 0.12em; margin-right: 0.5rem; }
.legend__sw--obs { width: 9px; height: 9px; border-radius: 50%; background: var(--blue); }
.legend__sw--cf { width: 10px; height: 10px; border-radius: 50%; border: 1.8px solid var(--accent); }
.legend__sw--curve { width: 18px; height: 1.6px; background: var(--ink); }
.legend__sw--shift { width: 18px; height: 0; border-top: 1.4px dashed var(--accent); }

/* ----------------------------------------------------------- publications */

.pubs { list-style: none; margin: 0; padding: 0; }
.pub {
  display: grid;
  grid-template-columns: 6.25rem minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: 1.15rem;
  border-top: 1px solid var(--rule);
}
.pub:first-child { border-top: 0; }
.pub__venue { padding-top: 0.3rem; }

.badge {
  display: inline-block;
  padding: 0.34rem 0.45rem 0.3rem;
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  font: 600 0.65625rem/1 var(--sans);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.badge--strong { color: var(--accent); border-color: var(--accent-line); }

.pub__title {
  margin: 0 0 0.4rem;
  max-width: 40rem;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.28;
  letter-spacing: -0.008em;
  color: var(--ink);
  text-wrap: balance;
}
.pub__title a { text-decoration: none; }
.pub__title a:hover { text-decoration: underline; text-decoration-color: var(--accent); }
.pub__authors { font: 400 0.90625rem/1.55 var(--sans); color: var(--ink-2); }
.pub__authors .me { font-weight: 600; color: var(--ink); }
.eq { margin-left: 0.05em; color: var(--muted); }
.pub__where { margin-top: 0.15rem; font-style: italic; font-size: 1rem; line-height: 1.5; color: var(--muted); }
.pub__note { font: normal 400 0.8125rem/1 var(--sans); }
.pub__summary { margin-top: 0.6rem; max-width: var(--measure); font-size: 1.0625rem; line-height: 1.55; text-wrap: pretty; }

.pub__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.15rem;
  margin-top: 0.7rem;
  font: 500 0.8125rem/1.4 var(--sans);
}
.pub__links a,
.linklike {
  padding-block: 0.3rem;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.3em;
  text-decoration-color: var(--rule-strong);
}
.pub__links a:hover,
.linklike:hover { text-decoration-color: var(--accent); }

.linklike {
  display: none;
  padding-inline: 0;
  border: 0;
  background: none;
  font: inherit;
  cursor: pointer;
}
.js .linklike { display: inline; }
.linklike[aria-expanded="true"] { text-decoration-color: var(--accent); }

.bib { position: relative; margin-top: 0.8rem; max-width: 44rem; }
.bib pre {
  margin: 0;
  padding: 1rem 1.15rem;
  overflow-x: auto;
  background: var(--panel);
  border-radius: 8px;
  font: 400 0.75rem/1.65 var(--mono);
  color: var(--ink-2);
  tab-size: 2;
}
.bib pre code { background: none; padding: 0; font-size: inherit; white-space: pre; }
.bib__copy {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--bg);
  color: var(--muted);
  font: 500 0.6875rem/1 var(--sans);
  cursor: pointer;
}
.bib__copy:hover { color: var(--ink); border-color: var(--ink); }
.bib__copy .icon { width: 12px; height: 12px; }
.bib__copy.is-done { color: var(--accent); border-color: var(--accent-line); }

/* ------------------------------------------------------- experience lists */

.entries { list-style: none; margin: 0; padding: 0; }
.entry {
  display: grid;
  grid-template-columns: 9.25rem minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: 0.85rem;
  border-top: 1px solid var(--rule);
}
.entry:first-child { border-top: 0; padding-top: 0.2rem; }
.entry__date {
  font: 500 0.8125rem/1.95 var(--sans);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.entry__head { font-size: 1.0625rem; line-height: 1.5; color: var(--ink-2); }
.entry__desc {
  max-width: 40rem;
  margin-top: 0.2rem;
  font: 400 0.9375rem/1.6 var(--sans);
  color: var(--muted);
  text-wrap: pretty;
}
.entries--compact .entry { padding-block: 0.6rem; }
.entries--compact .entry:first-child { padding-top: 0.2rem; }

.coops { margin: 0.55rem 0 0; max-width: 44rem; }
.coops__row {
  display: grid;
  grid-template-columns: 6.25rem minmax(0, 1fr) auto;
  gap: 0.25rem 1rem;
  padding-block: 0.42rem;
  border-top: 1px dashed var(--rule-strong);
  font: 400 0.90625rem/1.5 var(--sans);
}
.coops dt { font-weight: 600; color: var(--ink); }
.coops dd { margin: 0; color: var(--muted); }
.coops__date { color: var(--muted); font-size: 0.8125rem; line-height: 1.75; font-variant-numeric: tabular-nums; white-space: nowrap; }

.venues { list-style: none; margin: 0.45rem 0 0; padding: 0; max-width: 44rem; font: 400 0.90625rem/1.5 var(--sans); color: var(--muted); }
.venues li {
  display: grid;
  grid-template-columns: 3.75rem minmax(0, 1fr) auto;
  gap: 1rem;
  padding-block: 0.3rem;
  border-top: 1px dashed var(--rule-strong);
}
.venues__kind { color: var(--ink-2); font-weight: 500; }
.venues__date { font-size: 0.8125rem; line-height: 1.75; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ---------------------------------------------------------------- contact */

.contact__lead { max-width: var(--measure); }
.contact__email {
  margin-top: 0.85rem;
  font-weight: 360;
  font-size: clamp(1.45rem, 0.9rem + 2.5vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  overflow-wrap: anywhere;
}
.contact__email a { color: var(--ink); text-decoration-color: var(--accent-line); text-underline-offset: 0.16em; }
.contact__email a:hover { text-decoration-color: var(--accent); }
.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin-top: 1.1rem;
  font: 500 0.875rem/1 var(--sans);
}
.contact__links a { padding-block: 0.5rem; color: var(--ink); text-underline-offset: 0.3em; }

/* -------------------------------------------------------------- colophon */

.colophon { margin-top: clamp(4rem, 9vw, 6.5rem); border-top: 1px solid var(--rule); }
.colophon__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  max-width: calc(var(--page) + 2 * var(--pad));
  margin-inline: auto;
  padding: 1.5rem var(--pad) 2.5rem;
  font: 400 0.8125rem/1.5 var(--sans);
  color: var(--muted);
}
.colophon a { text-underline-offset: 0.3em; }

/* -------------------------------------------------------------------- 404 */

.notfound {
  max-width: 36rem;
  margin-inline: auto;
  padding: clamp(5rem, 16vw, 10rem) var(--pad) 2rem;
}
.notfound__title {
  margin: 0;
  font-weight: 380;
  font-size: clamp(2.25rem, 1.4rem + 3.6vw, 3.75rem);
  line-height: 1.04;
  letter-spacing: -0.024em;
  color: var(--ink);
  text-wrap: balance;
}
.notfound__text { margin-top: 1.25rem; }

/* ------------------------------------------------------------ responsive */

@media (max-width: 860px) {
  .grid { grid-template-columns: minmax(0, 1fr); }

  .hero__aside { padding-top: 0; margin-bottom: 1.5rem; }
  .hero__portrait { max-width: 5.5rem; border-radius: 50%; }

  .section__label { padding-top: 0.85rem; border-top-color: var(--ink); }
  .section__label span { position: static; }
  .section__body { border-top: 0; padding-top: 1rem; }

  .traj { grid-template-columns: minmax(0, 1fr); }
  .traj__log ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 1.25rem; }
}

@media (max-width: 560px) {
  body { font-size: 1.0625rem; }

  .masthead__name { display: none; }
  .masthead__nav [data-nav="experience"] { display: none; }

  .hero__affil li { display: block; }
  .hero__affil li + li::before { content: none; }

  .news li { grid-template-columns: minmax(0, 1fr); gap: 0; padding-block: 0.55rem; }
  .news time { line-height: 1.5; }

  .fig__panel {
    margin-inline: calc(-1 * var(--pad));
    padding: 1.1rem 0.85rem;
    border-radius: 0;
  }
  .traj__log ol { grid-template-columns: minmax(0, 1fr); }

  /* Figure 2 is too dense to shrink further: let it scroll sideways instead. */
  .fig__scroll {
    overflow-x: auto;
    margin-inline: -0.85rem;
    padding-inline: 0.85rem;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
  }
  .fig__scroll::-webkit-scrollbar { display: none; }
  .fig__scroll > svg { min-width: 540px; }
  .fig__hint {
    display: block;
    margin-top: 0.75rem;
    font: 500 0.6875rem/1 var(--sans);
    letter-spacing: 0.04em;
    color: var(--muted);
  }

  .pub { grid-template-columns: minmax(0, 1fr); gap: 0.65rem; }
  .pub__venue { padding-top: 0; }

  .entry { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; }
  .entry__date { line-height: 1.5; }

  .coops__row { grid-template-columns: minmax(0, 1fr) auto; }
  .venues li { grid-template-columns: 3.4rem minmax(0, 1fr); row-gap: 0; }
  .venues__date { grid-column: 2; }
  .coops__row dd:not(.coops__date) { grid-column: 1 / -1; grid-row: 2; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ------------------------------------------------------------------ print */

@media print {
  :root,
  :root[data-theme] {
    --bg: #ffffff;
    --bg-raised: #ffffff;
    --panel: #f4f2ed;
    --ink: #111111;
    --ink-2: #222222;
    --muted: #555555;
    --faint: #8a8a8a;
    --rule: #dddddd;
    --rule-strong: #c8c8c8;
    --accent: #b23519;
    color-scheme: light;
  }
  html { font-size: 10pt; background: #fff; }
  body { background: #fff; font-size: 10.5pt; }
  .masthead, .colophon, .skip, .fig__replay, .linklike, .bib, .hero__field, .hero__portrait--dark { display: none !important; }
  .hero__portrait--light { display: block !important; }
  a { text-decoration: none; }
  .section, .thread, .pub, .entry { break-inside: avoid; }
}