/** Site theme: bundled layers (tokens → article). Single file avoids broken @import handling on some hosts. */
/**
 * Site theme: layout + design tokens (colors, typography).
 * Tweak :root variables to reskin; component classes match this repo’s HTML.
 */

:root {
  /* Accent + neutrals */
  --color-cream: #f4f3ee;
  --color-stone: #b1ada1;
  /* Neutrals — high contrast (near-black body, dark secondary) */
  --color-text: #0a0a0a;
  --color-text-muted: #666666;
  --color-border: #e7e5e4;
  --color-surface: #ffffff;
  --color-surface-muted: #fafaf9;
  /* CTAs + inline links share --color-accent; change one place to reskin */
  --color-accent: #de7356;
  --color-link: var(--color-accent);
  /* Talks subway only (podcasts blue, papers teal) */
  --color-talks-line: #d73a83;
  /* Page background */
  --color-bg: #fbfaf8;
  --font-ui: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  /* CLS-safe serif stack (no network font swap on initial render) */
  --font-serif: Georgia, "Times New Roman", serif;
  /* Multiply serif font-size for visual parity with previous typography */
  --font-serif-size-scale: 1.15;
  /* Hero eyebrow + first name: extra bump on top of --font-serif-size-scale */
  --font-hero-serif-extra-scale: 1.2;
  /* Sticky header + safe area — hero fills remaining viewport */
  --site-header-height: 3.5rem;
}

/*
 * Breakpoints used in this file (@media max-width):
 * 520px — subway list tight layout
 * 720px — split article header stacks
 * 900px — hero single column
 */

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}


.container {
  width: min(920px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--color-bg) 92%, white);
  padding: 0.75rem 0;
  border: none;
  border-bottom: none;
  box-shadow: none;
  outline: none;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  column-gap: 1.75rem;
  row-gap: 0.5rem;
}

.brand {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 1.0625rem;
  letter-spacing: -0.015em;
}

nav a {
  margin: 0;
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.9375rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

nav a:hover {
  background: color-mix(in srgb, var(--color-stone) 22%, transparent);
  color: var(--color-text);
}

main {
  padding: 1.75rem 0 3rem;
}

/* Homepage: no extra top padding so the hero can sit in the visual center */
main.home-main {
  padding-top: 0;
}

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  /* First screen: full-viewport hero — room above + below */
  min-height: calc(
    100svh - var(--site-header-height) - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px)
  );
  padding: clamp(1.5rem, 4vw, 3rem) 0 2.5rem;
  box-sizing: border-box;
  background: transparent;
  border: none;
  box-shadow: none;
  border-radius: 0;
}

/* Intro + photo: vertically centered in the row for a balanced hero */
.hero-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.75rem;
  align-items: center;
}

.hero-intro {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0;
  font-family: var(--font-ui);
}

.hero-intro .eyebrow {
  margin-bottom: 0;
  font-family: var(--font-serif);
  font-size: calc(
    clamp(1.3125rem, 2.5vw, 1.55rem) * var(--font-serif-size-scale) * var(--font-hero-serif-extra-scale)
  );
  line-height: 1.08;
}

.hero-intro .hero-subtitle {
  margin-bottom: 1rem;
  font-family: var(--font-ui);
}

.hero-rest {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.eyebrow {
  margin: 0;
  font-size: 1.0625rem;
  color: var(--color-text);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.hero .hero-intro h1 {
  margin: -0.08em 0 1.25rem 0;
  font-family: var(--font-serif);
  color: var(--color-accent);
  font-size: calc(
    clamp(2.35rem, 5.5vw, 3.75rem) * var(--font-serif-size-scale) * var(--font-hero-serif-extra-scale)
  );
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.hero-subtitle {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.625rem;
  line-height: 1.3;
  font-weight: 500;
  white-space: pre-line;
}

.hero-actions {
  margin-top: 0;
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 0.625rem;
  padding: 0.5rem 0.95rem;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

/* Primary CTA: accent orange + white text; border matches fill so no darker ring */
.btn-primary {
  background: var(--color-accent);
  color: var(--color-surface);
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--color-accent) 88%, #000000);
  color: var(--color-surface);
  border-color: color-mix(in srgb, var(--color-accent) 88%, #000000);
}

.btn-primary:visited {
  color: var(--color-surface);
}

.btn-hero-about {
  background: var(--color-accent);
  color: var(--color-surface);
  border: 1px solid var(--color-accent);
}

.btn-hero-about:hover {
  background: color-mix(in srgb, var(--color-accent) 88%, #000000);
  color: var(--color-surface);
  border-color: color-mix(in srgb, var(--color-accent) 88%, #000000);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid color-mix(in srgb, var(--color-border) 88%, var(--color-accent));
}

.btn-secondary:hover {
  border-color: color-mix(in srgb, var(--color-stone) 75%, var(--color-accent));
  color: var(--color-text);
}

.hero-social {
  margin-top: 0;
  display: flex;
  gap: 0.45rem;
}

.icon-link {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--color-accent) 35%, var(--color-border));
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  background: transparent;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}

.hero-social .icon-link--lucide {
  font-size: 0;
  font-weight: 400;
}

.icon-link:hover {
  transform: translateY(-2px) scale(1.06);
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent) 18%, transparent);
}

.icon-link:active {
  transform: translateY(0) scale(0.96);
  box-shadow: none;
}

.icon-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Brand-forward hover (icons use currentColor via Lucide SVG) */
.icon-link[data-social="github"]:hover {
  color: #181717;
  border-color: color-mix(in srgb, #181717 45%, var(--color-border));
  background: color-mix(in srgb, #181717 9%, transparent);
  box-shadow: 0 4px 14px rgba(24, 23, 23, 0.12);
}

.icon-link[data-social="linkedin"]:hover {
  color: #0a66c2;
  border-color: color-mix(in srgb, #0a66c2 45%, var(--color-border));
  background: color-mix(in srgb, #0a66c2 10%, transparent);
  box-shadow: 0 4px 14px rgba(10, 102, 194, 0.18);
}

.icon-link[data-social="twitter"]:hover {
  color: #0f1419;
  border-color: color-mix(in srgb, #0f1419 35%, var(--color-border));
  background: color-mix(in srgb, #0f1419 7%, transparent);
  box-shadow: 0 4px 14px rgba(15, 20, 25, 0.1);
}

.icon-link[data-social="envelope"]:hover {
  color: var(--color-link);
  border-color: color-mix(in srgb, var(--color-link) 40%, var(--color-border));
  background: color-mix(in srgb, var(--color-link) 10%, transparent);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-link) 15%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  .icon-link {
    transition: none;
  }

  .icon-link:hover,
  .icon-link:active {
    transform: none;
  }
}

.icon-link svg {
  display: block;
  flex-shrink: 0;
  transition: color 0.2s ease;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-avatar {
  width: min(275px, 100%);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
  border: none;
  box-shadow: 0 4px 20px rgba(28, 25, 23, 0.08);
  background: color-mix(in srgb, var(--color-accent) 12%, var(--color-cream));
}

.hero-avatar-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-link);
  font-size: 1.5rem;
  font-weight: 500;
  box-shadow: none;
  border: 2px solid var(--color-border);
}

.panel {
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-surface);
  box-shadow: 0 1px 2px rgba(28, 25, 23, 0.04);
  padding: 1rem 1.1rem;
}


/* Full-bleed surface band — About only (white) */
.section-about {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  max-width: none;
  box-sizing: border-box;
  margin-top: 0;
  margin-bottom: 2rem;
  padding: clamp(2rem, 4vw, 3rem) max(1rem, calc((100vw - min(920px, 92vw)) / 2));
  scroll-margin-top: 5rem;
  background: var(--color-surface);
  border: none;
  border-radius: 0;
  box-shadow: none;
}

/* User (Lucide-style); icon size matches talk lead icons */
.section-about .about-user-wrap {
  margin: 0 0 0.5rem;
  width: fit-content;
  outline: none;
}

.section-about .about-user-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.section-about#about.about-user-active .about-user-icon {
  color: var(--color-accent);
}

.section-about .about-user-svg {
  display: block;
  width: 5.25rem;
  height: 5.25rem;
}

/* My Work: waypoints mark (Lucide-style), same size / interaction as About user icon */
.section-work .work-waypoints-wrap {
  margin: 0 0 0.5rem;
  width: fit-content;
  outline: none;
}

.section-work .work-waypoints-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.section-work#work.work-waypoints-active .work-waypoints-icon {
  color: var(--color-accent);
}

.section-work .work-waypoints-svg {
  display: block;
  width: 5.25rem;
  height: 5.25rem;
}

/* My Work: same layout rhythm as About, page canvas color (not white surface) */
.section-work {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  max-width: none;
  box-sizing: border-box;
  margin-top: 0;
  margin-bottom: 2rem;
  padding: clamp(2rem, 4vw, 3rem) max(1rem, calc((100vw - min(920px, 92vw)) / 2));
  scroll-margin-top: 5rem;
  background: var(--color-bg);
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.section-about .prose {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  line-height: 1.65;
}

.section-about .prose h1 {
  font-family: var(--font-serif);
  text-align: left;
  margin-bottom: 0.85rem;
  font-size: calc(clamp(1.5rem, 3vw, 2.125rem) * var(--font-serif-size-scale));
  color: var(--color-text);
  line-height: 1.2;
}

.section-about .about-title,
.section-work .about-title {
  font-family: var(--font-serif);
  text-align: left;
  margin: 0 0 0.75rem;
  font-size: calc(clamp(1.5rem, 3vw, 2.125rem) * var(--font-serif-size-scale));
  color: var(--color-text);
  line-height: 1.2;
}

.section-about .about-lead {
  font-family: var(--font-ui);
  margin-bottom: 1.5rem;
}

.section-about .about-lead p {
  margin: 0;
}

.section-about .about-dropdowns {
  font-family: var(--font-ui);
  text-align: left;
  max-width: none;
}

.section-about .about-current {
  font-size: 1.125rem;
  line-height: 1.65;
  margin: 0 0 1.25rem;
  padding: 0 0.15rem;
  scroll-margin-top: 5rem;
}

.section-about .about-current p:first-child {
  margin-top: 0;
}

.section-about .about-current > ul:first-child,
.section-about .about-details-body > ul:first-child {
  margin-top: 0;
}

.section-about .about-current ul,
.section-about .about-details-body ul {
  margin: 0 0 0.35rem;
  padding-left: 1.35rem;
}

.section-about .about-current li + li,
.section-about .about-details-body li + li {
  margin-top: 0.45rem;
}

.section-about .prose a {
  text-decoration: none;
}

.section-about .prose a:hover {
  color: var(--color-accent);
}

.section-about .about-details {
  border-bottom: none;
  scroll-margin-top: 5rem;
}

/* Match My Work accordion row (Talks / Podcasts / Papers): title + .panel-accordion-caret */
.section-about .about-details-summary {
  font-family: var(--font-serif);
  font-size: calc(clamp(1.15rem, 1.75vw, 1.35rem) * var(--font-serif-size-scale));
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-text);
  padding: 0.85rem 0 0.85rem 0.15rem;
}

.section-about .about-details-summary-label {
  min-width: 0;
}

.section-about .about-details-summary:hover {
  color: var(--color-link);
}

.section-about .about-details-body {
  font-size: 1.125rem;
  line-height: 1.65;
  padding: 0 0 1.15rem 0.15rem;
}

.section-about .about-details-body p:first-child {
  margin-top: 0;
}

/* Homepage: expertise pills — vertical rhythm matches accordion summary rows (0.85 + 0.85) */
.section-about .section-expertise {
  margin-top: 0;
  padding-top: 0;
  max-width: 52rem;
}

/* Same type scale as “What I’ve built” / “Background”; top padding only, like the next summary row */
.section-about .section-expertise__heading {
  margin: 0 0 0.65rem;
  padding: 0.85rem 0 0 0.15rem;
  font-family: var(--font-serif);
  font-size: calc(clamp(1.15rem, 1.75vw, 1.35rem) * var(--font-serif-size-scale));
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1.2;
}

.section-about .section-expertise__categories {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 2.5vw, 2.125rem);
}

.section-about .expertise-category__label {
  margin: 0 0 0.65rem;
  font-family: var(--font-ui);
  font-size: 0.6875rem; /* 11px */
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.section-about .expertise-category__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.625rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.section-about .expertise-category__tag-item {
  margin: 0;
  padding: 0;
}

.section-about .expertise-tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.8125rem; /* 13px */
  line-height: 1.35;
  font-weight: 400;
  color: color-mix(in srgb, var(--color-text) 88%, var(--color-text-muted));
  padding: 0.35rem 0.72rem;
  border-radius: 9999px;
  background: color-mix(in srgb, var(--color-border) 35%, var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--color-border) 55%, transparent);
  white-space: nowrap;
  transition:
    background-color 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease;
}

@media (prefers-reduced-motion: reduce) {
  .section-about .expertise-tag {
    transition: none;
  }
}

@media (hover: hover) and (pointer: fine) {
  .section-about .expertise-tag:hover {
    background: color-mix(in srgb, var(--color-accent) 14%, var(--color-surface));
    border-color: color-mix(in srgb, var(--color-accent) 38%, var(--color-border));
    color: var(--color-text);
  }
}

.section-about .expertise-tag--tipped {
  cursor: help;
  outline: none;
  position: relative;
  z-index: 0;
}

/* Tooltip below pill — real DOM text (not attr()) so &, ’, etc. render correctly */
.section-about .expertise-tag__tip {
  position: absolute;
  left: 50%;
  top: calc(100% + 0.45rem);
  bottom: auto;
  transform: translateX(-50%);
  box-sizing: border-box;
  min-width: 15rem;
  max-width: min(27rem, 90vw);
  padding: 0.45rem 0.55rem;
  border-radius: 0.35rem;
  border: 1px solid var(--color-accent);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.4;
  text-align: left;
  white-space: normal;
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
  z-index: 30;
  transition: opacity 0.12s ease, visibility 0.12s ease;
}

@media (prefers-reduced-motion: reduce) {
  .section-about .expertise-tag__tip {
    transition: none;
  }
}

@media (hover: hover) and (pointer: fine) {
  .section-about .expertise-tag--tipped:hover {
    z-index: 20;
  }

  .section-about .expertise-tag--tipped:hover .expertise-tag__tip {
    visibility: visible;
    opacity: 1;
  }
}

.section-about .expertise-tag--tipped:focus-visible .expertise-tag__tip {
  visibility: visible;
  opacity: 1;
  z-index: 20;
}

/* Keyboard focus: same colors as hover — no outline (avoids nudge) */
.section-about .expertise-tag--tipped:focus-visible {
  background: color-mix(in srgb, var(--color-accent) 14%, var(--color-surface));
  border-color: color-mix(in srgb, var(--color-accent) 38%, var(--color-border));
  color: var(--color-text);
}

/* Talks / podcasts / papers: transit-diagram style (bold route line + station beads) */
.subway-list-wrap {
  /* Route colors — one line per homepage section */
  --subway-line-color: #1f6fe4;
  --subway-stop-size: 14px;
  --subway-rail-width: 9px;
  --subway-gutter: 2.65rem;
  --subway-rail-center: 0.92rem;
  position: relative;
  padding-left: var(--subway-gutter);
  margin-top: 0.2rem;
}

#talks .subway-list-wrap,
.subway-list-wrap.talk-list-subway {
  --subway-line-color: var(--color-talks-line);
}

#podcasts .subway-list-wrap {
  --subway-line-color: #1f6fe4;
}

#publications .subway-list-wrap {
  --subway-line-color: #2d8f8f;
}

/* Vertical extent set by JS: first stop center → last stop center */
.subway-list-wrap::before {
  content: "";
  position: absolute;
  left: var(--subway-rail-center);
  top: var(--subway-rail-top, 0);
  height: var(--subway-rail-height, 0);
  bottom: auto;
  width: var(--subway-rail-width);
  transform: translateX(-50%);
  border-radius: 999px;
  background: var(--subway-line-color);
  z-index: 0;
  opacity: var(--subway-rail-opacity, 0);
  pointer-events: none;
}

.subway-list-wrap .item-list li {
  position: relative;
  /* Match link line box so `lh` matches title text for stop alignment */
  font-size: 1.0625rem;
  line-height: 1.45;
}

/* Stop vertically centered on each row (multi-line titles stay centered in the “card”) */
.subway-list-wrap .item-list li::before {
  content: "";
  position: absolute;
  left: calc(var(--subway-rail-center) - var(--subway-gutter));
  top: 50%;
  transform: translate(-50%, -50%);
  width: var(--subway-stop-size);
  height: var(--subway-stop-size);
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--color-surface);
  border: 3px solid var(--subway-line-color);
  z-index: 1;
  transition:
    border-color 0.15s ease,
    background 0.15s ease,
    transform 0.15s ease;
}

/* List titles: sans body copy under section headings */
.section-grid .subway-list-wrap .item-list a {
  font-family: var(--font-ui);
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: color 0.15s ease;
}

.subway-list-wrap .item-list li a {
  transition: color 0.15s ease;
}

@media (hover: hover) and (pointer: fine) {
  .subway-list-wrap .item-list li:hover::before {
    background: color-mix(in srgb, var(--subway-line-color) 12%, var(--color-surface));
    border-color: color-mix(in srgb, var(--subway-line-color) 88%, #000000);
  }

  .subway-list-wrap .item-list li:hover a,
  .subway-list-wrap .item-list li a:hover {
    color: var(--subway-line-color);
    text-decoration: none;
  }
}

@media (max-width: 520px) {
  .subway-list-wrap {
    --subway-gutter: 2.25rem;
    --subway-rail-center: 0.78rem;
    --subway-rail-width: 8px;
    --subway-stop-size: 13px;
  }
}


/* Talks / podcasts / papers: single column stack */
.section-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* My Work: match About accordion rhythm (Interests ↔ Background), not wide section gaps */
.section-work .section-grid {
  gap: 0;
}

.section-work .section-grid details.panel {
  padding: 0.85rem 0;
}

section h2 {
  margin: 0 0 0.7rem;
  font-size: 1.0625rem;
  color: var(--color-text);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.section-head .section-more {
  flex-shrink: 0;
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-link);
  text-decoration: none;
}

.section-head .section-more:hover {
  color: var(--color-accent);
}

/* “See all …” below the list — not an <li>, so not a subway stop */
.section-grid .subway-list-wrap .section-more-below {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.section-grid .subway-list-wrap .section-more-below .section-more {
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-link);
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .section-grid .subway-list-wrap .section-more-below .section-more:hover {
    color: var(--color-accent);
  }
}

.section-grid .subway-list-wrap .section-more-below .section-more-expand {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  font: inherit;
  text-align: inherit;
}

/* Homepage list sections: sans body; headings use serif — align with container */
.section-grid section.panel,
.section-grid details.panel {
  font-family: var(--font-ui);
  margin: 0;
  padding: 1.35rem 0;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  box-sizing: border-box;
}

.section-grid .section-head {
  padding-bottom: 0;
  margin-bottom: 0.65rem;
}

.section-grid details.panel > .section-head--accordion {
  margin-bottom: 0.65rem;
}

.section-grid section.panel h2,
.section-grid details.panel h2 {
  font-family: var(--font-serif);
  font-size: calc(clamp(1.15rem, 1.75vw, 1.35rem) * var(--font-serif-size-scale));
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--color-text);
}

/* My Work + About (Interests / Background): accordion row + shared caret */
.section-work .section-grid details.panel > summary.section-head--accordion,
.section-about .about-details > .about-details-summary.section-head--accordion {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.section-work .section-grid details.panel > summary.section-head--accordion::-webkit-details-marker,
.section-about .about-details > .about-details-summary.section-head--accordion::-webkit-details-marker {
  display: none;
}

.section-work .section-grid details.panel > summary.section-head--accordion::marker,
.section-about .about-details > .about-details-summary.section-head--accordion::marker {
  content: "";
}

.section-work .section-grid .panel-accordion-caret,
.section-about .about-details .panel-accordion-caret {
  flex-shrink: 0;
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid var(--color-stone);
  border-bottom: 2px solid var(--color-stone);
  transform: translateY(-0.15rem) rotate(45deg);
  transition: transform 0.2s ease;
}

.section-work .section-grid details.panel[open] > summary .panel-accordion-caret,
.section-about .about-details[open] > .about-details-summary .panel-accordion-caret {
  transform: translateY(0.1rem) rotate(-135deg);
}

.section-work .section-grid details.panel > summary.section-head--accordion:hover .panel-accordion-caret,
.section-about .about-details > .about-details-summary.section-head--accordion:hover .panel-accordion-caret {
  border-color: var(--color-link);
}

.section-work .section-grid details.panel > summary.section-head--accordion:focus-visible,
.section-about .about-details > .about-details-summary.section-head--accordion:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 0.25rem;
}

.section-grid .item-list li {
  padding: 0.72rem 0;
  border-top: none;
  border-bottom: none;
}

.section-grid .item-list li:first-child {
  padding-top: 0.35rem;
}

.section-grid .item-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

/* Subway rows: equal gap between items (no asymmetric first/last padding) */
.section-grid .subway-list-wrap .item-list {
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
}

.section-grid .subway-list-wrap .item-list li {
  padding: 0;
}

.section-grid .subway-list-wrap .item-list li:first-child,
.section-grid .subway-list-wrap .item-list li:last-child {
  padding-top: 0;
  padding-bottom: 0;
}

.section-grid .item-list a {
  font-family: inherit;
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.45;
  color: var(--color-text);
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .section-grid .item-list a:hover {
    color: var(--color-link);
  }
}

.section-grid .item-list a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* My Work: list links match About .about-details-body (Interests / Background) */
.section-work .subway-list-wrap .item-list li {
  font-size: 1.125rem;
  line-height: 1.65;
}

.section-work .subway-list-wrap .item-list a {
  font-size: 1.125rem;
  line-height: 1.65;
  letter-spacing: normal;
}

.section-grid .item-list li.empty {
  border-bottom: none;
  font-style: italic;
  font-size: 1rem;
  color: var(--color-stone);
}


h1,
h2 {
  line-height: 1.2;
  font-weight: 500;
}

.prose p {
  margin-top: 0.65rem;
  color: var(--color-text);
}

.prose a {
  color: var(--color-link);
  text-decoration: none;
}

.prose a:hover {
  color: var(--color-accent);
}

.item-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.item-list li {
  padding: 0.6rem 0;
  border-top: 1px solid var(--color-border);
}

.item-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.item-list a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}

@media (hover: hover) and (pointer: fine) {
  .item-list a:hover {
    color: var(--color-link);
  }
}

.item-list a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.empty {
  color: var(--color-stone);
}

.meta {
  color: var(--color-stone);
  font-size: 0.875rem;
}

.site-footer {
  padding: 1rem 0 2rem;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.site-footer a {
  color: var(--color-link);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-accent);
}


/* Inner pages (lists + singles): sit on pampas — no white card */
main:not(.home-main) article,
main:not(.home-main) > section:first-of-type {
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  padding: 1.5rem 0;
}

/* Fallback for articles without .article-page */
article:not(.article-page) h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-text);
  margin-top: 0;
}

article:not(.article-page) .content {
  color: var(--color-text);
  font-size: 0.9375rem;
}

article:not(.article-page) .content a {
  color: var(--color-link);
}

/* Long-form / blog detail: align with .container (brand + footer), not a centered narrow column */
main:not(.home-main) article.article-page {
  max-width: none;
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  padding: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2.5rem, 5vw, 4rem);
  box-sizing: border-box;
}

.article-page-header {
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
}

.article-page-title {
  font-family: var(--font-serif);
  font-size: calc(clamp(2rem, 4.5vw, 2.875rem) * var(--font-serif-size-scale));
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--color-text);
  margin: 0 0 1.25rem;
  max-width: 40rem;
}

/* Talk detail: Lucide chart-line (injected) + CSS motion (inspired by lucide-animated; not the React package) */
@keyframes talk-lead-icon-gentle {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.92;
  }
  50% {
    transform: translateY(-2px);
    opacity: 1;
  }
}

@keyframes talk-chart-line-draw {
  to {
    stroke-dashoffset: 0;
  }
}

.talk-page-lead-icon {
  margin: 0 0 1.15rem;
  color: var(--color-accent);
  animation: talk-lead-icon-gentle 3.5s ease-in-out infinite;
}

.talk-page-lead-icon svg {
  display: block;
  width: 5.25rem;
  height: 5.25rem;
}

/* chart-line only: second path = trend line, “draw” on load */
.talk-page-lead-icon[data-lead-icon="chart-line"] svg.lucide-chart-line path:nth-of-type(2) {
  stroke-dasharray: 67;
  stroke-dashoffset: 67;
  animation: talk-chart-line-draw 1.1s ease-out 0.12s forwards;
}

@media (prefers-reduced-motion: reduce) {
  .talk-page-lead-icon {
    animation: none;
  }

  .talk-page-lead-icon[data-lead-icon="chart-line"] svg.lucide-chart-line path:nth-of-type(2) {
    stroke-dasharray: unset;
    stroke-dashoffset: 0;
    animation: none;
  }
}

/* Detail pages: cap title line length (talks, podcasts, papers, etc.); font size stays .article-page-title */
.article-page-title-wrap {
  min-width: 0;
  max-width: min(25rem, 100%);
}

/* Talk / podcast / publication detail: title left, metadata block right */
.article-page--split .article-page-title {
  font-weight: 500;
}

.article-page--split .article-page-header--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 17.5rem);
  gap: 1.75rem 2.5rem;
  align-items: start;
}

.article-page--split .article-page-header--split .article-page-title {
  max-width: none;
  margin-bottom: 0;
}

.article-page--split .article-page-meta-aside {
  justify-self: end;
  width: 100%;
  max-width: 17.5rem;
}

.article-page--split .article-page-meta-aside .article-meta-grid {
  max-width: none;
}

/* Metadata grid: icon + label / value stack */
.article-meta-grid {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  font-family: var(--font-ui);
  max-width: 40rem;
}

@media (max-width: 720px) {
  .article-page--split .article-page-header--split {
    grid-template-columns: 1fr;
  }

  .article-page--split .article-page-meta-aside {
    justify-self: stretch;
    max-width: none;
  }

  .article-page--split .article-page-header--split .article-page-title {
    margin-bottom: 0.25rem;
  }
}


.meta-row {
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  gap: 0.65rem 1rem;
  align-items: start;
}

.meta-icon {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 0.15rem;
  color: var(--color-text-muted);
}

.meta-icon svg {
  display: block;
  flex-shrink: 0;
}

.meta-copy {
  min-width: 0;
}

.meta-label {
  margin: 0 0 0.2rem;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-text-muted);
}

.meta-value {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.meta-value > p {
  margin: 0;
}

.meta-value a {
  color: inherit;
  font-weight: 500;
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .meta-value a:hover {
    color: var(--color-link);
  }
}

/* Readable measure; left-aligned with header/footer (.container) */
.article-page-body,
.article-page .talk-abstract.article-page-body {
  max-width: 40rem;
}

.article-page-body {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  line-height: 1.72;
  letter-spacing: -0.012em;
  color: var(--color-text);
}

.article-page-body p {
  margin-top: 0;
  margin-bottom: 1.1em;
}

.article-page-body p:last-child {
  margin-bottom: 0;
}

.article-page-body h2 {
  font-family: var(--font-serif);
  font-size: calc(clamp(1.15rem, 1.75vw, 1.35rem) * var(--font-serif-size-scale));
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 2.25rem 0 0.85rem;
  color: var(--color-text);
}

.article-page-body h2:first-child {
  margin-top: 0;
}

.article-page-body h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin: 1.75rem 0 0.65rem;
  color: var(--color-text);
}

.article-page-body ul,
.article-page-body ol {
  margin: 0.75rem 0 1.1em;
  padding-left: 1.35rem;
}

.article-page-body li {
  margin: 0.35em 0;
}

.article-page-body li::marker {
  color: var(--color-stone);
}

.article-page-body a:not(.btn) {
  color: var(--color-link);
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .article-page-body a:not(.btn):hover {
    color: var(--color-accent);
  }
}

.article-page-body code {
  font-size: 0.92em;
  padding: 0.12em 0.35em;
  border-radius: 0.25rem;
  background: color-mix(in srgb, var(--color-stone) 14%, transparent);
}

.article-page-body pre {
  font-size: 0.9rem;
  line-height: 1.55;
  padding: 1rem 1.15rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
}

/* Talk section index (/talk/): heading + subway matches homepage line */
section.section-grid.talk-list-page > h1 {
  font-family: var(--font-serif);
  font-size: calc(clamp(1.35rem, 2.2vw, 1.75rem) * var(--font-serif-size-scale));
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  color: var(--color-text);
}

section.section-grid.talk-list-page > .content {
  margin-bottom: 1rem;
}

/* Talks list rows: title left, date right */
section.section-grid.talk-list-page .subway-list-wrap .item-list li {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  gap: 1rem 1.5rem;
}

section.section-grid.talk-list-page .subway-list-wrap .item-list li .talk-list-title {
  flex: 1 1 auto;
  min-width: 0;
}

section.section-grid.talk-list-page .subway-list-wrap .item-list li .talk-list-date {
  flex: 0 0 auto;
  text-align: right;
  white-space: nowrap;
}

/* Talk detail: Abstract label (paired with .article-page) */
.article-page .talk-abstract-heading {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin: 0 0 1rem;
}

.article-page .talk-abstract {
  margin: 0;
}

/* Publication: extra gap between Authors block and Abstract */
.publication-single .talk-abstract + .talk-abstract {
  margin-top: 2.25rem;
}

.article-page .talk-resources {
  max-width: 40rem;
  margin-top: 2.5rem;
}

.article-page .talk-abstract-body p:first-child {
  margin-top: 0;
}

.article-resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}

@media (max-width: 900px) {
  .hero-top {
    grid-template-columns: 1fr;
  }

  .hero-intro {
    text-align: center;
    align-items: center;
  }

  .hero-rest {
    margin-left: auto;
    margin-right: auto;
    align-items: center;
    text-align: center;
    width: 100%;
  }

  .hero-actions,
  .hero-social {
    justify-content: center;
  }

}