:root {
  --bg: #ffffff;
  --bg-alt: #f7f7f5;
  --ink: #0f1115;
  --ink-soft: #4a4f57;
  --ink-muted: #6b7280;
  --line: #e6e6e2;
  --accent: #2541b2;
  --accent-soft: #eef0fa;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.editorial {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 14px;
}
.eyebrow.center, .editorial.center, .section-lede.center { text-align: center; }
.section-lede {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 14px auto 0;
}

/* HEADER */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 18px;
}
.logo-text {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  gap: 28px;
}
.nav-links a {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 500;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* HERO */
.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(1200px 600px at 80% -10%, var(--accent-soft) 0%, transparent 60%),
    var(--bg);
}
.hero h1 {
  font-size: clamp(40px, 6vw, 68px);
  margin: 8px 0 24px;
  max-width: 880px;
}
.hero h1 em { font-style: italic; color: var(--accent); font-weight: 600; }
.lede {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 0 32px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { transform: translateY(-1px); background: #1e3699; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); text-decoration: none; }
.hero-meta {
  margin-top: 36px;
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

/* STRIP */
.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 36px 0;
}
.strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 720px) {
  .strip-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}
.strip-num {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 36px;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 6px;
}
.strip-label {
  font-size: 13px;
  color: var(--ink-muted);
  line-height: 1.5;
}

/* SECTIONS */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section h2 {
  font-size: clamp(28px, 4vw, 44px);
  margin: 0 0 18px;
  max-width: 760px;
}
.section h2.center { margin-left: auto; margin-right: auto; }
.two-col {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}
@media (max-width: 880px) {
  .two-col { grid-template-columns: 1fr; gap: 32px; }
}
.prose p {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 0 18px;
}
.prose em { color: var(--ink); font-style: italic; }

/* STEPS */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 48px;
}
@media (max-width: 880px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 24px;
}
.step-num {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.step h3 {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 20px;
  margin: 0 0 10px;
}
.step p { font-size: 14.5px; color: var(--ink-soft); margin: 0; line-height: 1.6; }

/* TOPICS */
.topics {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.topic {
  display: inline-flex;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--ink);
  background: var(--bg);
  font-weight: 500;
}

/* FAQ */
.faq { margin-top: 48px; max-width: 760px; margin-left: auto; margin-right: auto; }
.faq details {
  border-top: 1px solid var(--line);
  padding: 22px 0;
}
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 19px;
  list-style: none;
  padding-right: 24px;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: -2px;
  font-size: 22px;
  color: var(--ink-muted);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
}
.faq details[open] summary::after { content: '–'; }
.faq p {
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 15.5px;
}

/* CTA */
.cta {
  background: var(--ink);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}
.cta h2 {
  color: #fff;
  font-size: clamp(32px, 5vw, 48px);
  margin: 0 0 14px;
}
.cta p {
  color: #c7cbd1;
  font-size: 17px;
  max-width: 520px;
  margin: 0 auto 28px;
}
.cta .btn-primary { background: #fff; color: var(--ink); }
.cta .btn-primary:hover { background: #f3f3f0; }

/* FOOTER */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  padding: 56px 0 32px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-grid a {
  display: block;
  color: var(--ink-soft);
  margin: 6px 0;
  font-size: 14px;
}
.footer-grid a:hover { color: var(--ink); }
.footer-h {
  font-family: 'Inter', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 11px;
  color: var(--ink-muted);
  margin: 0 0 12px;
  font-weight: 600;
}
.footer-tag {
  color: var(--ink-muted);
  font-size: 13px;
  margin-top: 12px;
  max-width: 280px;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { margin: 0; font-size: 12.5px; color: var(--ink-muted); }
.disclosure { max-width: 520px; }

/* LEGAL PAGES */
.legal {
  padding: 64px 0 96px;
  max-width: 760px;
}
.legal h1 {
  font-size: clamp(32px, 5vw, 48px);
  margin: 0 0 8px;
}
.legal .updated { color: var(--ink-muted); font-size: 13px; margin: 0 0 32px; }
.legal h2 {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 22px;
  margin: 36px 0 12px;
}
.legal p, .legal li { color: var(--ink-soft); font-size: 16px; line-height: 1.7; }
.legal ul { padding-left: 22px; }
.legal a { color: var(--accent); }

/* HOMEPAGE READING-LIST CARDS */
.list-cards {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 880px) { .list-cards { grid-template-columns: 1fr; } }
.list-card {
  display: block;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 26px;
  color: inherit;
  text-decoration: none;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.list-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: var(--accent);
}
.list-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 14px;
}
.list-card h3 {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--ink);
}
.list-desc {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.6;
  margin: 0 0 18px;
}
.list-cta {
  display: inline-block;
  color: var(--accent);
  font-weight: 500;
  font-size: 14px;
}

/* READING-LISTS PAGE */
.hero-tight { padding: 72px 0 56px; }
.hero-tight h1 { font-size: clamp(32px, 5vw, 52px); }
.hero-tight .lede { margin-bottom: 24px; }
.toc {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-left: 2px solid var(--line);
  padding-left: 18px;
  max-width: 520px;
}
.toc a {
  color: var(--ink-soft);
  font-size: 14.5px;
  text-decoration: none;
}
.toc a:hover { color: var(--accent); text-decoration: underline; }

.reading-list { padding-top: 72px; padding-bottom: 72px; }
.reading-list h2 { max-width: 760px; margin-bottom: 22px; }
.list-intro {
  font-size: 17px;
  color: var(--ink-soft);
  line-height: 1.65;
  max-width: 720px;
  margin: 0 0 48px;
}
.book-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}
.book {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.book:last-child { border-bottom: 1px solid var(--line); }
.book-rank {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 24px;
  color: var(--accent);
  letter-spacing: -0.01em;
  line-height: 1;
}
.book h3 {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
  color: var(--ink);
  line-height: 1.25;
}
.book-by {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 14.5px;
  color: var(--ink-muted);
  letter-spacing: 0;
}
.book p {
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 1.65;
  margin: 8px 0 12px;
}
.book-link {
  display: inline-block;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}