@font-face {
  font-family: "DM Sans";
  src: url("/fonts/dm-sans-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

@font-face {
  font-family: "Source Serif 4";
  src: url("/fonts/source-serif-4-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --color-background: #f6f2ea;
  --color-surface: #fffcf7;
  --color-text: #292b28;
  --color-text-secondary: #60645b;
  --color-accent: #49634e;
  --color-accent-hover: #334b38;
  --color-border: #d9d9ce;
  --color-control-border: #858a7d;
  --font-serif: "Source Serif 4", Georgia, serif;
  --font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --space-1: .5rem;
  --space-2: .75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --accent: var(--color-accent);
  --muted: var(--color-text-secondary);
  --rule: var(--color-border);
  --toolbox-accent: var(--color-accent);
  --toolbox-accent-soft: #e7ede4;
  --toolbox-ink: var(--color-text);
  --toolbox-muted: var(--color-text-secondary);
  --toolbox-faint: var(--color-text-secondary);
  --toolbox-rule: var(--color-border);
  --toolbox-panel: var(--color-surface);
}

html {
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  letter-spacing: normal;
}

body, button, input, select, textarea {
  color: var(--color-text);
  font-family: var(--font-sans);
  letter-spacing: normal;
}

body { min-width: 0; }
*, *::before, *::after { box-sizing: border-box; }
img, svg { max-width: 100%; }

a { color: var(--color-accent); text-decoration: underline; text-underline-offset: .16em; text-decoration-thickness: 1px; transition: color .15s ease; }
a:hover { color: var(--color-accent-hover); text-shadow: none; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  font-family: var(--font-serif);
  letter-spacing: -.02em;
}

.section-inner { width: min(100% - 40px, 1040px); max-width: 1040px; }
.thin { max-width: 700px; }

.editorial-header {
  position: relative;
  z-index: 10;
  width: 100%;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-background);
  font-family: var(--font-sans);
}
.editorial-header__inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.editorial-header__brand {
  flex: 0 1 auto;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none;
}
.editorial-header__brand:hover { color: var(--color-accent); }
.editorial-header__nav { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1.6rem; }
.editorial-header__nav a {
  color: var(--color-text);
  font-size: .9375rem;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding: .35rem 0;
}
.editorial-header__nav a:hover,
.editorial-header__nav a[aria-current="page"] { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.editorial-header__menu { display: none; border: 1px solid var(--color-control-border); border-radius: 4px; padding: .4rem .7rem; background: transparent; font-size: .9375rem; font-weight: 600; }

body#page .site-main { margin-top: 0; padding-top: var(--space-7); }
body#page #site-footer { margin: var(--space-7) auto var(--space-5); color: var(--color-text-secondary); font-size: .8125rem; }
#site-footer a, #home-footer a { color: var(--color-accent); }
#home-footer { color: var(--color-text-secondary); opacity: 1; }

/* Homepage */
body#page #spotlight { max-width: none; min-height: 0; width: 100%; font-size: 1rem; }
body#page #spotlight #home-center { width: min(100% - 40px, 1040px); padding: var(--space-7) 0 var(--space-5); }
.home-person { margin-bottom: var(--space-6); align-items: start; }
.home-person h1 { font-family: var(--font-serif); font-size: clamp(2.25rem, 5vw, 3.5rem); font-weight: 500; line-height: 1.1; letter-spacing: -.035em; }
.home-role { margin-top: var(--space-3); color: var(--color-accent); font-size: 1rem; font-weight: 600; }
.home-intro { max-width: 680px; margin-top: var(--space-2); color: var(--color-text-secondary); font-size: 1.0625rem; line-height: 1.6; }
body#page #home-social { display: flex; gap: .8rem; margin: .3rem 0 0; font-size: 1.1rem; opacity: 1; }
#home-social a { color: var(--color-accent); margin: 0; }
#home-social a:hover { color: var(--color-accent-hover); }
.selected-writing { padding-top: var(--space-5); }
.selected-writing h2 { margin-bottom: var(--space-3); color: var(--color-text-secondary); font-family: var(--font-sans); font-size: .8125rem; font-weight: 600; letter-spacing: .08em; }
.essay-link { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; padding: var(--space-4) 0; border-bottom: 1px solid var(--color-border); text-decoration: none; }
.essay-link:hover .essay-title { color: var(--color-accent); text-decoration: underline; text-underline-offset: .15em; }
.essay-title { grid-row: 1; color: var(--color-text); font-family: var(--font-serif); font-size: 1.5rem; font-weight: 600; line-height: 1.3; letter-spacing: -.01em; }
.essay-summary { grid-row: 2; margin-top: .3rem; color: var(--color-text-secondary); font-size: 1rem; line-height: 1.6; }
.essay-date { grid-row: 3; margin-top: .4rem; color: var(--color-text-secondary); font-size: .8125rem; }
.view-all { margin-top: var(--space-4); font-size: .9375rem; font-weight: 600; }
.toolbox-teaser { margin-top: var(--space-6); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: 4px; background: var(--color-surface); }
.toolbox-teaser .tool-eyebrow { color: var(--color-text-secondary); }
.toolbox-teaser h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 600; }
.toolbox-teaser p { color: var(--color-text-secondary); }
.toolbox-link { font-size: .9375rem; font-weight: 600; }
body#page #home-footer { padding: 0 20px var(--space-5); font-size: .8125rem; }

/* Writing index */
.writing-page { max-width: 880px; }
.writing-page > h1, .about-page > h1, .toolbox-page h1, .tool-page h1 { font-size: clamp(2.25rem, 4vw, 3rem); font-weight: 600; line-height: 1.15; letter-spacing: -.025em; }
.writing-intro, .toolbox-intro { color: var(--color-text-secondary); font-size: 1.0625rem; line-height: 1.6; }
.topic-filter { margin-bottom: var(--space-6); border-color: var(--color-border); }
.topic-filter button { color: var(--color-text-secondary); font-size: .9375rem; font-weight: 500; }
.topic-filter button:hover, .topic-filter button[aria-pressed="true"] { color: var(--color-accent); border-bottom: 2px solid var(--color-accent); font-weight: 600; }
.posts-group { display: block; margin-bottom: var(--space-6); }
.posts-group .post-year { margin: 0 0 var(--space-2); padding: 0; color: var(--color-text-secondary); font-family: var(--font-sans); font-size: .875rem; font-weight: 600; opacity: 1; }
.posts-group .post-item { border-bottom: 1px solid var(--color-border); }
.posts-group .post-item.post-card > a { display: flex; flex-direction: column; align-items: flex-start; gap: 0; padding: var(--space-4) 0; text-decoration: none; }
.post-card .post-heading { display: contents; }
.post-card .post-title { order: 1; color: var(--color-text); font-family: var(--font-serif); font-size: 1.5rem; font-weight: 600; line-height: 1.3; letter-spacing: -.01em; }
.post-card a:hover .post-title { color: var(--color-accent); text-decoration: underline; text-underline-offset: .15em; }
.post-summary { order: 2; margin: .3rem 0 .45rem; color: var(--color-text-secondary); font-size: 1rem; line-height: 1.6; }
.post-card .post-day { order: 3; margin: 0; color: var(--color-text-secondary); font-size: .8125rem; opacity: 1; }
.post-details { order: 4; margin-top: .15rem; color: var(--color-text-secondary); font-size: .8125rem; }
.post-topic { color: var(--color-accent); }

/* Essays */
.site-main > article.thin { max-width: 700px; }
.post-header { margin: 0 0 var(--space-5); }
.post-header .post-meta { color: var(--color-text-secondary); font-family: var(--font-sans); font-size: .875rem; opacity: 1; }
.post-header h1 { margin: .45rem 0 0; font-size: clamp(2rem, 4vw, 3rem); font-weight: 600; line-height: 1.15; letter-spacing: -.025em; overflow-wrap: anywhere; }
.post-header .post-subtitle { margin-top: .65rem; color: var(--color-text-secondary); font-family: var(--font-sans); font-size: 1.0625rem; font-style: normal; line-height: 1.6; }
.content { color: var(--color-text); font-family: var(--font-serif); font-size: 1.125rem; line-height: 1.65; letter-spacing: normal; }
.content p { margin: 0 0 1.25rem; }
.content h2 { margin: var(--space-6) 0 var(--space-3); font-size: 1.75rem; font-weight: 600; line-height: 1.25; overflow-wrap: anywhere; }
.content h3 { margin: var(--space-5) 0 var(--space-2); font-size: 1.35rem; line-height: 1.3; overflow-wrap: anywhere; }
.content ul, .content ol { margin: 0 0 1.25rem 1.5rem; }
.content li { margin-bottom: .4rem; }
.content a { color: var(--color-accent); box-shadow: none; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .15em; overflow-wrap: anywhere; }
.content a:hover { color: var(--color-accent-hover); box-shadow: none; }
.content a.anchor { text-decoration: none; }
.content blockquote { margin: var(--space-4) 0; padding: .25rem 0 .25rem var(--space-4); border-left: 2px solid var(--color-accent); color: var(--color-text); font-style: italic; }
.content blockquote p:last-child { margin-bottom: 0; }
.content figure { margin: var(--space-5) 0; text-align: left; }
.content figure img { margin: 0; max-width: 100%; height: auto; border-radius: 2px; }
.content figure figcaption, .content figure p { margin: .4rem 0 0; color: var(--color-text-secondary); font-family: var(--font-sans); font-size: .8125rem; font-style: normal; line-height: 1.5; text-align: left; opacity: 1; }
.content pre, .content code { letter-spacing: normal; }
.content pre { border: 1px solid var(--color-border); color: var(--color-text); background: var(--color-surface); }
.content code { color: var(--color-text); background: #e9e8de; }
.content pre code { background: transparent; }
.content .decision-visual, .content .reasoning-flow, .content .metric-flow,
.content .boundary-visual, .content .result-sequence, .content .clock-question,
.content .trajectory-equation {
  border: 1px solid var(--color-border);
  border-radius: 3px;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-sans);
  letter-spacing: normal;
  white-space: normal;
}
.content .trajectory-equation .not-equal { color: var(--color-accent); }
.content .decision-visual, .content .reasoning-flow, .content .metric-flow, .content .boundary-visual { flex-wrap: wrap; }
hr.post-end { border-color: var(--color-border); opacity: 1; }
.post-info, .post-nav, .related-posts { color: var(--color-text-secondary); font-family: var(--font-sans); }
.post-info p { overflow-wrap: anywhere; }
.post-info .tag { display: inline-block; max-width: 100%; }
.related-posts { border: 1px solid var(--color-border); }
.post-nav a { color: var(--color-accent); }
.toolbox-callout { border-color: var(--color-border); border-radius: 4px; background: var(--color-surface); font-family: var(--font-sans); }
.toolbox-callout h2 { font-family: var(--font-sans); font-size: .8125rem; }
.essay-tool-link { border-color: var(--color-border); }
.essay-tool-link strong { color: var(--color-text); }
.essay-tool-link .essay-tool-question { color: var(--color-text-secondary); }

/* About and toolbox */
.about-page { max-width: 800px; }
.about-page > h1 { margin-bottom: var(--space-6); }
.about-section { border-color: var(--color-border); }
.about-section h2 { color: var(--color-text-secondary); font-family: var(--font-sans); font-size: .8125rem; font-weight: 600; }
.about-section p { font-family: var(--font-sans); font-size: 1.0625rem; line-height: 1.65; }
.about-page a { color: var(--color-accent); }
.about-photo { border: 1px solid var(--color-border); }
.toolbox-page, .tool-page { max-width: 960px; }
.toolbox-page > header { margin-bottom: var(--space-5); }
.catalogue-lens { border: 1px solid var(--color-border); border-left: 3px solid var(--color-accent); border-radius: 3px; background: var(--color-surface); }
.catalogue-lens .lens-question { color: var(--color-text); font-family: var(--font-serif); font-size: clamp(1.35rem, 2.5vw, 1.7rem); font-weight: 500; line-height: 1.35; }
.lens-context strong { color: var(--color-text); }
.lens-context span, .filter-label, .tool-eyebrow, .catalogue-meta, .source-note { color: var(--color-text-secondary); }
.toolbox-filters { border-color: var(--color-border); }
.filter-buttons button, .source-filter, .lens-refresh { border-color: var(--color-control-border); color: var(--color-text); background: var(--color-surface); }
.filter-buttons button:hover, .filter-buttons button[aria-pressed="true"], .lens-refresh:hover { border-color: var(--color-accent); color: var(--color-accent); }
.filter-buttons button[aria-pressed="true"] { border-width: 2px; font-weight: 700; text-decoration: underline; text-underline-offset: .2em; }
.clear-filters, .lens-open, .back-link { color: var(--color-accent); }
.tool-card { border-color: var(--color-border); border-radius: 4px; background: var(--color-surface); box-shadow: none; }
.tool-card:hover { border-color: var(--color-accent); transform: none; }
.tool-card h2 { color: var(--color-text-secondary); font-family: var(--font-sans); font-size: 1.05rem; font-weight: 600; letter-spacing: normal; }
.tool-card .tool-question { color: var(--color-text); font-family: var(--font-serif); font-size: 1.3rem; line-height: 1.4; }
.tool-card a { text-decoration: none; }
.tool-card a:hover .tool-question { text-decoration: underline; text-underline-offset: .15em; }
.tool-tag, .use-list span { background: #e7ede4; color: var(--color-accent-hover); }
.tool-page .tool-question-lead { border-color: var(--color-accent); color: var(--color-text); font-family: var(--font-serif); font-size: clamp(1.4rem, 3vw, 1.9rem); }
.tool-explanation, .tool-section, .post-relationship { border-color: var(--color-border); }
.tool-explanation h2, .tool-section h2 { color: var(--color-text-secondary); font-family: var(--font-sans); }
.tool-explanation p { color: var(--color-text); font-family: var(--font-serif); }
.tool-section p, .post-relationship span { color: var(--color-text-secondary); }
.post-relationship strong { color: var(--color-text); }

@media (max-width: 700px) {
  .editorial-header__inner { flex-wrap: wrap; min-height: 64px; gap: 0; }
  .editorial-header__menu { display: block; margin-left: auto; }
  .editorial-header__nav { display: none; flex: 0 0 100%; flex-direction: column; align-items: stretch; gap: 0; padding: .5rem 0 1rem; }
  .editorial-header__nav.is-open { display: flex; }
  .editorial-header__nav a { padding: .6rem 0; border-bottom: 1px solid var(--color-border); }
  .editorial-header__nav a[aria-current="page"] { border-bottom: 2px solid var(--color-accent); }
  .home-person { grid-template-columns: 1fr; margin-bottom: var(--space-5); gap: .6rem; }
  .toolbox-teaser { grid-template-columns: 1fr; gap: var(--space-3); }
  .about-intro { grid-template-columns: 1fr; }
}

@media (min-width: 701px) {
  .section-inner { width: min(100% - 64px, 1040px); }
  body#page #spotlight #home-center { width: min(100% - 64px, 1040px); }
}

@media (min-width: 1200px) {
  .section-inner { width: min(100% - 96px, 1040px); }
  body#page #spotlight #home-center { width: min(100% - 96px, 1040px); }
}

@media (max-width: 390px) {
  .editorial-header__brand { font-size: .875rem; }
  .content .trajectory-equation { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}