/* Static landing — no build step; safe for Vercel, Cloudflare Pages, Netlify, S3, etc. */

:root {
  --bg: #0c0f14;
  --bg-elevated: #131820;
  --text: #e8eaef;
  --text-muted: #9aa3b2;
  --accent: #f59e0b;
  --accent-dim: #b45309;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;
  --max: 720px;
  --max-wide: 1040px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(245, 158, 11, 0.12), transparent 50%),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(59, 130, 246, 0.06), transparent 45%);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  z-index: 100;
  border-radius: 4px;
}

.skip-link:focus {
  left: 0.5rem;
}

.wrap {
  width: min(100% - 2rem, var(--max-wide));
  margin-inline: auto;
}

.wrap.narrow {
  max-width: var(--max);
}

.site-header {
  padding: clamp(3rem, 8vw, 5rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0 0 1.75rem;
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 38ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #0c0f14;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #fbbf24;
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent-dim);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--accent);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--text-muted);
  background: var(--bg-elevated);
}

.btn-block {
  width: 100%;
}

.fine-print {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.section {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
  border-block: 1px solid var(--border);
}

h2 {
  margin: 0 0 1.25rem;
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.topic-list {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
}

.topic-list li {
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.topic-list li::marker {
  color: var(--accent);
}

.note {
  margin: 0;
  padding: 1rem 1.25rem;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.split {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 860px) {
  .split {
    grid-template-columns: 1fr minmax(260px, 320px);
  }
}

.author-name {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}

.section p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.section p:last-child {
  margin-bottom: 0;
}

.focus {
  font-size: 0.9375rem;
}

.contact-list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  margin-bottom: 0.5rem;
}

.contact-list a {
  color: var(--accent);
  text-decoration: none;
}

.contact-list a:hover,
.contact-list a:focus-visible {
  text-decoration: underline;
}

.card {
  padding: 1.5rem;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.card-title {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.card p {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
}

.center {
  text-align: center;
}

.center p {
  margin-left: auto;
  margin-right: auto;
  max-width: 48ch;
}

.site-footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
}

.footer-inner p {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  max-width: 65ch;
}

.footer-inner a {
  color: var(--accent);
}

.site-footer a:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}