/* WhyWhyWhy — editorial explainer design */
:root {
  --paper: #faf7f0;
  --surface: #fffdf8;
  --ink: #1c1b18;
  --muted: #6c675c;
  --line: #e7e0d2;
  --accent: #d6492f;
  --accent-ink: #b13a23;
  --shadow: 0 1px 2px rgba(28, 27, 24, 0.04), 0 8px 24px rgba(28, 27, 24, 0.06);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw: 1000px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16140f;
    --surface: #1f1c16;
    --ink: #f0ece1;
    --muted: #a59e8e;
    --line: #322d24;
    --accent: #ff6a4d;
    --accent-ink: #ff8266;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: inline-flex; align-items: baseline; font-family: var(--serif); font-weight: 700; font-size: 1.45rem; letter-spacing: -0.02em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand-why:nth-child(2) { opacity: 0.72; }
.brand-why:nth-child(3) { opacity: 0.46; }
.brand-q { color: var(--accent); font-size: 1.7rem; line-height: 0; margin-left: 1px; }
.site-nav { display: flex; gap: 22px; font-size: 0.95rem; font-weight: 500; }
.site-nav a { color: var(--muted); }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); text-decoration: none; }

/* Hero */
.hero { padding: 60px 0 30px; border-bottom: 1px solid var(--line); margin-bottom: 36px; }
.hero-kicker { font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-ink); font-weight: 600; margin: 0 0 14px; }
.hero-title { font-family: var(--serif); font-weight: 700; font-size: clamp(2.2rem, 6vw, 3.6rem); line-height: 1.05; letter-spacing: -0.025em; margin: 0 0 16px; max-width: 16ch; }
.hero-sub { font-size: 1.12rem; color: var(--muted); max-width: 56ch; margin: 0; }

/* Sections */
.section-label { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); font-weight: 700; margin: 0 0 18px; padding-bottom: 8px; border-bottom: 2px solid var(--ink); display: inline-block; }
.feed { margin-bottom: 52px; }

/* Card grid */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 22px 18px;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}
.card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); box-shadow: 0 6px 14px rgba(28,27,24,0.08), 0 18px 40px rgba(28,27,24,0.10); }
.card-link { color: inherit; display: block; }
.card-link:hover { text-decoration: none; }
.card-q { font-family: var(--serif); font-weight: 700; font-size: 1.32rem; line-height: 1.22; letter-spacing: -0.015em; margin: 0 0 10px; }
.card:hover .card-q { color: var(--accent-ink); }
.card-summary { color: var(--muted); font-size: 0.96rem; margin: 0 0 16px; }
.card-meta { display: flex; align-items: center; gap: 10px; margin-top: auto; font-size: 0.8rem; color: var(--muted); }
.badge { display: inline-block; padding: 2px 9px; border: 1px solid var(--line); border-radius: 999px; font-size: 0.72rem; color: var(--muted); white-space: nowrap; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tag { font-size: 0.74rem; color: var(--accent-ink); opacity: 0.85; }
.more { margin-top: 24px; font-weight: 600; }

/* Article */
.post { max-width: 720px; margin: 0 auto; padding-top: 24px; }
.breadcrumb { font-size: 0.82rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumb span { margin: 0 6px; }
.post-head { margin-bottom: 26px; }
.post-title { font-family: var(--serif); font-weight: 700; font-size: clamp(1.9rem, 4.5vw, 2.9rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 16px; }
.post-meta { display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--muted); }
.prose { font-size: 1.08rem; line-height: 1.75; }
.prose p { margin: 0 0 1.1em; }
.prose h2 { font-family: var(--serif); font-size: 1.5rem; letter-spacing: -0.01em; margin: 1.7em 0 0.5em; }
.prose h3 { font-size: 1.18rem; margin: 1.4em 0 0.4em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li { margin-bottom: 0.4em; }
.prose strong { color: var(--ink); }
.prose blockquote { margin: 1.2em 0; padding: 0.4em 1.1em; border-left: 3px solid var(--accent); color: var(--muted); font-style: italic; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }
.prose code { background: color-mix(in srgb, var(--ink) 7%, transparent); padding: 0.1em 0.4em; border-radius: 5px; font-size: 0.9em; }
.post-tags { margin: 30px 0; }
.related { margin: 40px 0; padding-top: 28px; border-top: 1px solid var(--line); }
.related-list { list-style: none; padding: 0; margin: 0; }
.related-list li { margin-bottom: 10px; }
.related-list a { font-family: var(--serif); font-size: 1.1rem; font-weight: 600; color: var(--ink); }
.related-list a:hover { color: var(--accent-ink); }
.back { margin-top: 36px; font-weight: 600; }

/* Pages (archive/about/privacy) */
.page-head { padding: 40px 0 24px; border-bottom: 1px solid var(--line); margin-bottom: 30px; }
.page-head h1 { font-family: var(--serif); font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.02em; margin: 0 0 8px; }
.page-head p { color: var(--muted); margin: 0; }
.page-head + .prose, .prose { }
.archive-day { margin-bottom: 34px; }
.archive-date { font-family: var(--serif); font-size: 1.25rem; margin: 0 0 12px; color: var(--accent-ink); }
.archive-list { list-style: none; padding: 0; margin: 0; }
.archive-list li { padding: 9px 0; border-bottom: 1px solid var(--line); }
.archive-list a { font-family: var(--serif); font-size: 1.12rem; font-weight: 600; color: var(--ink); }
.archive-list a:hover { color: var(--accent-ink); }
main .prose { max-width: 720px; }

/* Ads */
.ad { margin: 30px auto; max-width: 728px; }
.ad--placeholder { display: flex; align-items: center; justify-content: center; min-height: 110px; border: 1px dashed color-mix(in srgb, var(--muted) 45%, transparent); border-radius: 10px; color: var(--muted); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; background: color-mix(in srgb, var(--ink) 2%, transparent); }

/* Footer */
.site-footer { margin-top: 70px; border-top: 1px solid var(--line); background: color-mix(in srgb, var(--ink) 3%, var(--paper)); }
.site-footer .wrap { padding-top: 34px; padding-bottom: 40px; }
.site-footer .tagline { font-family: var(--serif); font-size: 1.15rem; font-weight: 700; margin: 0 0 14px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 18px; font-size: 0.92rem; margin-bottom: 16px; }
.footer-nav a { color: var(--muted); }
.footer-nav a:hover { color: var(--ink); }
.copyright { font-size: 0.8rem; color: var(--muted); margin: 0; max-width: 60ch; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .hero { padding: 40px 0 24px; }
  .site-nav { gap: 16px; }
}