:root {
  color-scheme: light;
  --ink: #0f172a;
  --muted: #475569;
  --paper: #f7fbff;
  --card: rgba(255, 255, 255, 0.86);
  --line: rgba(15, 23, 42, 0.1);
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --accent-soft: rgba(37, 99, 235, 0.14);
  --mint: #0f9d58;
  --shadow: 0 24px 60px rgba(37, 99, 235, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top, rgba(37, 99, 235, 0.26), transparent 34%),
    linear-gradient(180deg, #edf6ff 0%, #dbeafe 24%, #c7dbff 58%, #f5f9ff 100%);
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code {
  padding: 0.1rem 0.38rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  font-family: "SFMono-Regular", "Consolas", monospace;
  font-size: 0.92em;
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 1rem 1.1rem;
  border-radius: 18px;
  background: #0f172a;
  color: #e2e8f0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  border-radius: 0;
}

.shell {
  max-width: 76rem;
  margin: 0 auto;
  padding: 1.2rem 1.5rem 4.5rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.18);
}

.brand-copy strong {
  display: block;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.brand-copy span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.topnav a {
  padding: 0.45rem 0.78rem;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 2rem;
  align-items: center;
  padding: 1rem 0 2.2rem;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.42rem 0.82rem;
  border-radius: 999px;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.hero h1,
.page-title {
  margin: 1rem 0 0.9rem;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(2.9rem, 7vw, 5.6rem);
  line-height: 0.94;
  letter-spacing: -0.045em;
}

.hero p,
.lede,
.page-lede {
  max-width: 40rem;
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.4rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 46px;
  padding: 0.85rem 1.05rem;
  border-radius: 16px;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
}

.button.primary {
  color: white;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  box-shadow: 0 18px 30px rgba(37, 99, 235, 0.22);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(15, 23, 42, 0.08);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.4rem;
}

.pill-row span {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.78rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.64);
  color: var(--muted);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.hero-visual,
.panel,
.doc-panel,
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-visual {
  padding: 1rem;
}

.hero-visual img {
  display: block;
  width: 100%;
  border-radius: 20px;
}

.hero-visual p {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.section {
  margin-top: 2.8rem;
}

.section-header {
  max-width: 44rem;
  margin-bottom: 1.1rem;
}

.section-header h2 {
  margin: 0 0 0.45rem;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  letter-spacing: -0.03em;
}

.section-header p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

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

.card,
.panel,
.doc-panel {
  padding: 1.2rem;
}

.card h3,
.panel h3,
.doc-panel h3 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  font-size: 1.15rem;
}

.card p,
.panel p,
.doc-panel p,
.doc-panel li,
.article p,
.article li {
  color: var(--muted);
  line-height: 1.7;
}

.article {
  padding: 1.6rem;
}

.article h2 {
  margin-top: 2rem;
  margin-bottom: 0.55rem;
  font-size: 1.5rem;
}

.article h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}

.article ul,
.article ol {
  padding-left: 1.2rem;
}

.two-up {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1rem;
}

.toc {
  position: sticky;
  top: 1.25rem;
}

.toc h2 {
  margin-top: 0;
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc li + li {
  margin-top: 0.65rem;
}

.note {
  margin-top: 1rem;
  padding: 0.95rem 1rem;
  border-radius: 18px;
  background: rgba(15, 157, 88, 0.1);
  border: 1px solid rgba(15, 157, 88, 0.18);
  color: #14532d;
}

.mini-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

.mini-list div {
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.04);
}

.site-footer {
  margin-top: 3.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  color: var(--muted);
}

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 0.65rem;
}

@media (max-width: 860px) {
  .hero,
  .two-up {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .toc {
    position: static;
  }
}