:root {
  --bg: #f5f3ef;
  --panel: #fffdf9;
  --ink: #1d2330;
  --muted: #5b6471;
  --line: rgba(28, 35, 48, 0.14);
  --blue: #214f94;
  --blue-deep: #173866;
  --gold: #b18d33;
  --shadow: 0 24px 70px rgba(20, 33, 53, 0.12);
  --max-width: 1180px;
  --article-width: 760px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(33, 79, 148, 0.08), transparent 24%),
    linear-gradient(180deg, #f9f7f3, var(--bg));
  font-family: Georgia, "Times New Roman", serif;
}

a {
  color: var(--blue);
}

a:hover {
  color: var(--blue-deep);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: var(--ink);
  color: white;
  padding: 0.7rem 0.9rem;
  z-index: 10;
}

.site-shell {
  width: min(var(--max-width), calc(100vw - 28px));
  margin: 0 auto;
  padding: 20px 0 40px;
}

.site-header,
.hero-panel,
.content-panel,
.article-header,
.article-body,
.side-card,
.site-footer,
.continuity-note,
.feature-card,
.section-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.site-header,
.site-footer,
.hero-panel,
.content-panel,
.article-header,
.article-body,
.side-card {
  padding: 22px 24px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 20px;
}

.brand-kicker,
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold);
  font: 700 0.78rem/1.2 "Helvetica Neue", Arial, sans-serif;
  margin: 0 0 8px;
}

.brand-title {
  display: inline-block;
  text-decoration: none;
  color: var(--ink);
  font: 700 clamp(1.7rem, 3vw, 2.2rem)/1.05 "Helvetica Neue", Arial, sans-serif;
}

.brand-summary,
.site-footer p,
.continuity-note p,
.feature-card p,
.section-card p,
.article-note,
.article-meta,
.article-sidebar li span {
  color: var(--muted);
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.top-nav a,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-decoration: none;
  font: 600 0.95rem/1.2 "Helvetica Neue", Arial, sans-serif;
}

.top-nav a,
.button-link.button-link-secondary {
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.button-link,
.top-nav a:first-child {
  background: linear-gradient(180deg, var(--blue), var(--blue-deep));
  border-color: transparent;
  color: white;
}

.hero-panel {
  margin-bottom: 18px;
}

.hero-grid,
.article-layout {
  display: grid;
  gap: 20px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.8fr);
  align-items: start;
}

.hero-panel h1,
.article-header h1 {
  margin: 0 0 14px;
  font: 700 clamp(2rem, 4vw, 3rem)/1.05 "Helvetica Neue", Arial, sans-serif;
  letter-spacing: -0.03em;
}

.lede {
  font-size: 1.08rem;
  line-height: 1.72;
  color: var(--muted);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.continuity-note {
  padding: 18px;
}

.content-panel {
  margin-bottom: 18px;
}

.content-panel h2,
.continuity-note h2,
.side-card h2 {
  margin-top: 0;
  font: 700 1.2rem/1.2 "Helvetica Neue", Arial, sans-serif;
}

.feature-grid,
.section-grid {
  display: grid;
  gap: 16px;
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.section-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.feature-card,
.section-card {
  padding: 18px;
}

.feature-card h3,
.section-card h3 {
  margin-top: 0;
  font: 700 1.02rem/1.3 "Helvetica Neue", Arial, sans-serif;
}

.article-layout {
  grid-template-columns: minmax(0, var(--article-width)) minmax(250px, 1fr);
  align-items: start;
}

.article-body {
  line-height: 1.78;
  font-size: 1.08rem;
}

.article-body p,
.article-body li,
.article-body blockquote {
  max-width: 68ch;
}

.article-body h2,
.article-body h3 {
  margin-top: 2rem;
  font-family: "Helvetica Neue", Arial, sans-serif;
  line-height: 1.2;
}

.article-body h2 {
  font-size: 1.45rem;
}

.article-body h3 {
  font-size: 1.15rem;
}

.article-body blockquote {
  margin: 1.4rem 0;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--gold);
  background: rgba(177, 141, 51, 0.08);
}

.article-body code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.92em;
  background: rgba(23, 56, 102, 0.08);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

.article-sidebar {
  position: sticky;
  top: 18px;
}

.side-card {
  margin-bottom: 16px;
}

.link-list {
  padding-left: 1.1rem;
}

.link-list li + li {
  margin-top: 0.8rem;
}

.article-meta,
.article-note,
.footer-note {
  font-size: 0.95rem;
  line-height: 1.6;
}

.site-footer {
  display: grid;
  gap: 10px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid #e5b748;
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .site-header,
  .hero-grid,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }
}