/* 1 TPS — shared site shell
   Article-specific designs remain self-contained in each article. */
:root {
  --site-display: Georgia, "Times New Roman", serif;
  --site-sans: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  --site-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --site-width: 1180px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --site-paper: #10110f;
  --site-paper-raised: #171915;
  --site-ink: #f3f0e8;
  --site-muted: #aaa99f;
  --site-line: #363a31;
  --site-accent: #e67e4a;
  --site-green: #a9c28f;
  --site-footer: #0b0c0a;
  --site-on-accent: #10110f;
  --site-control-bg: rgba(20, 20, 18, .9);
  --site-control-ink: #f3f0e8;
  --paper: #10110f;
  --paper-2: #171915;
  --paper-raised: #171915;
  --paper-soft: #1e211c;
  --ink: #f3f0e8;
  --muted: #aaa99f;
  --ink-muted: #aaa99f;
  --line: #363a31;
  --cream: #171915;
  --orange: #e67e4a;
  --orange-2: #efaa85;
  --accent: #e67e4a;
  --accent-soft: #3f281d;
  --green: #a9c28f;
  --green-2: #53604a;
  --sage: #a9c28f;
  --sage-soft: #253021;
  --blue: #8aabb5;
  --dark: #0b0c0a;
  --dark-2: #171915;
  --white: #f3f0e8;
}

html[data-theme="light"] {
  color-scheme: light;
  --site-paper: #f4f1e8;
  --site-paper-raised: #fbf9f3;
  --site-ink: #181816;
  --site-muted: #646158;
  --site-line: #cfc8b8;
  --site-accent: #c85f3d;
  --site-green: #58715a;
  --site-footer: #191918;
  --site-on-accent: #fffef9;
  --site-control-bg: rgba(251, 249, 243, .92);
  --site-control-ink: #181816;
  --paper: #f4f1e8;
  --paper-2: #e9e4d8;
  --paper-raised: #fbf9f3;
  --paper-soft: #e9e5da;
  --ink: #181816;
  --muted: #646158;
  --ink-muted: #66685f;
  --line: #cfc8b8;
  --cream: #fbf9f3;
  --orange: #c85f3d;
  --orange-2: #efb08d;
  --accent: #b84f27;
  --accent-soft: #f4d8c8;
  --green: #58715a;
  --green-2: #b9c8b6;
  --sage: #49663b;
  --sage-soft: #dce8d4;
  --blue: #3d6572;
  --dark: #191918;
  --dark-2: #2b2b28;
  --white: #fffef9;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.blog-shell {
  margin: 0;
  background: var(--site-paper);
  color: var(--site-ink);
  font-family: var(--site-sans);
  font-size: 17px;
  line-height: 1.6;
}
.blog-shell a { color: inherit; }
.blog-shell a:focus-visible,
.site-backbar a:focus-visible {
  outline: 3px solid var(--site-accent);
  outline-offset: 4px;
}
.site-container { width: min(var(--site-width), calc(100% - 40px)); margin-inline: auto; }

.site-masthead {
  border-bottom: 1px solid var(--site-line);
}
.site-masthead__inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font: 700 13px/1 var(--site-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.site-wordmark__mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  font-size: 10px;
  letter-spacing: 0;
}
.site-masthead__note {
  color: var(--site-muted);
  font: 12px/1.3 var(--site-mono);
  letter-spacing: .04em;
  text-align: right;
}
.site-masthead__actions { display: flex; align-items: center; gap: 20px; }
.site-theme-button {
  min-width: 82px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 13px;
  border: 1px solid var(--site-line);
  background: var(--site-control-bg);
  color: var(--site-control-ink);
  cursor: pointer;
  font: 700 11px/1 var(--site-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.site-theme-button:hover { border-color: var(--site-accent); color: var(--site-accent); }
.site-theme-button:focus-visible { outline: 3px solid var(--site-accent); outline-offset: 3px; }
.site-theme-button--floating { position: fixed; z-index: 120; top: 16px; right: 16px; }

.blog-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(240px, .5fr);
  align-items: end;
  gap: clamp(40px, 8vw, 120px);
  padding: clamp(72px, 12vw, 150px) 0 clamp(62px, 9vw, 110px);
}
.blog-intro__kicker,
.article-list__label,
.article-card__meta,
.blog-aside__label {
  margin: 0 0 20px;
  color: var(--site-accent);
  font: 700 11px/1.4 var(--site-mono);
  letter-spacing: .11em;
  text-transform: uppercase;
}
.blog-intro h1 {
  max-width: 900px;
  margin: 0;
  font: 500 clamp(58px, 9vw, 126px)/.88 var(--site-display);
  letter-spacing: -.055em;
  text-wrap: balance;
}
.blog-intro h1 em { color: var(--site-accent); font-weight: inherit; }
.blog-intro__lede {
  margin: 0;
  padding-top: 22px;
  border-top: 1px solid var(--site-line);
  color: var(--site-muted);
  font: 22px/1.48 var(--site-display);
  text-wrap: pretty;
}

.article-list {
  border-top: 1px solid var(--site-line);
  padding: 28px 0 100px;
}
.article-list__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 18px;
}
.article-list__label { margin: 0; color: var(--site-muted); }
.article-list__count { color: var(--site-muted); font: 11px var(--site-mono); }
.article-card {
  display: grid;
  grid-template-columns: 120px minmax(0, 1.5fr) minmax(260px, .65fr) 52px;
  gap: clamp(20px, 4vw, 58px);
  align-items: start;
  padding: clamp(34px, 5vw, 64px) 0;
  border-top: 1px solid var(--site-line);
}
.article-card:last-child { border-bottom: 1px solid var(--site-line); }
.article-card__number {
  font: 12px/1.4 var(--site-mono);
  color: var(--site-muted);
}
.article-card h2 {
  margin: 0;
  font: 500 clamp(34px, 4.4vw, 66px)/1 var(--site-display);
  letter-spacing: -.035em;
  text-wrap: balance;
}
.article-card h2 a { text-decoration: none; }
.article-card h2 a:hover { color: var(--site-accent); }
.article-card__summary { margin: 2px 0 0; color: var(--site-muted); text-wrap: pretty; }
.article-card__meta { margin: 16px 0 0; color: var(--site-green); }
.article-card__arrow {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--site-line);
  text-decoration: none;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.article-card:hover .article-card__arrow {
  background: var(--site-accent);
  color: var(--site-on-accent);
  border-color: var(--site-accent);
  transform: translateX(4px);
}

.blog-aside {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  padding: 0 0 100px;
}
.blog-aside__label { color: var(--site-muted); }
.blog-aside p { max-width: 720px; margin: 0; font: 24px/1.5 var(--site-display); }
.site-footer {
  background: var(--site-footer);
  color: #f3f0e8;
  border-top: 1px solid var(--site-line);
}
.site-footer__inner {
  min-height: 160px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}
.site-footer p { margin: 0; color: #aaa99f; font: 12px/1.5 var(--site-mono); }
.site-footer a { color: inherit; text-underline-offset: 4px; }

/* A deliberately narrow namespace for bespoke article pages. */
.site-backbar {
  position: fixed;
  z-index: 120;
  top: 16px;
  left: 16px;
}
.site-backbar a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 0 14px;
  border: 1px solid rgba(128, 128, 128, .45);
  background: var(--site-control-bg);
  color: var(--site-control-ink);
  font: 700 11px/1 var(--site-mono);
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
}
.site-backbar a:hover { background: var(--site-accent); border-color: var(--site-accent); }

.not-found {
  min-height: calc(100vh - 235px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  padding-block: 80px;
}
.not-found__code { color: var(--site-accent); font: 500 clamp(100px, 20vw, 280px)/.8 var(--site-display); }
.not-found h1 { margin: 0 0 20px; font: 500 clamp(44px, 6vw, 82px)/.95 var(--site-display); letter-spacing: -.04em; }
.not-found p { max-width: 520px; color: var(--site-muted); }
.text-link { text-underline-offset: 5px; text-decoration-color: var(--site-accent); }

@media (max-width: 820px) {
  .blog-intro { grid-template-columns: 1fr; }
  .article-card { grid-template-columns: 64px 1fr 48px; }
  .article-card__copy { grid-column: 2 / -1; }
  .article-card__arrow { grid-column: 3; grid-row: 1; }
  .blog-aside { grid-template-columns: 1fr; gap: 12px; }
  .not-found { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .site-container { width: min(100% - 28px, var(--site-width)); }
  .site-masthead__note { display: none; }
  .site-masthead__actions { gap: 8px; }
  .blog-intro h1 { font-size: clamp(54px, 20vw, 88px); }
  .article-card { grid-template-columns: 1fr 46px; gap: 18px; }
  .article-card__number { grid-column: 1; }
  .article-card h2 { grid-column: 1 / -1; }
  .article-card__copy { grid-column: 1 / -1; }
  .article-card__arrow { grid-column: 2; grid-row: 1; }
  .site-footer__inner { align-items: flex-start; flex-direction: column; justify-content: center; }
  .site-backbar { top: 10px; left: 10px; }
  .site-theme-button--floating { top: 10px; right: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .article-card__arrow { transition: none; }
}