:root {
  color-scheme: dark;
  --background: #0b1020;
  --surface: #111a2e;
  --surface-raised: #18223a;
  --text: #f2f5ff;
  --muted: #a4b1ca;
  --line: #27334b;
  --mint: #9af2d0;
  --lilac: #bdacf9;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(ellipse at 50% 0%, #1b2541 0%, var(--background) 52%);
  font-size: 16px;
  line-height: 1.65;
  overflow-wrap: break-word;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { color: var(--mint); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--mint); outline-offset: 5px; }
button { font: inherit; }
::selection { background: #375c68; color: #fff; }
.skip-link { position: absolute; left: 16px; top: -100px; background: var(--mint); color: #10231f; padding: 12px 18px; z-index: 10; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.page-shell { width: min(100% - 32px, 560px); margin: 0 auto; }
.site-header { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); }
.site-identity { display: inline-flex; align-items: center; gap: 11px; font-weight: 750; font-size: 15px; line-height: 1.3; text-decoration: none; letter-spacing: -.02em; }
.site-symbol { color: var(--mint); flex-shrink: 0; }
.header-link { flex-shrink: 0; color: var(--muted); font-size: 13px; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; gap: 9px; }
.hero { padding-top: 34px; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 12px; text-transform: uppercase; letter-spacing: .15em; font-size: 10px; font-weight: 750; color: var(--mint); }
.eyebrow-line { height: 1px; width: 21px; background: currentColor; }
h1 { margin: 0; font-size: clamp(40px, 11vw, 62px); font-weight: 780; letter-spacing: -.055em; line-height: 1.05; }
.hero-description { color: var(--muted); font-size: 17px; line-height: 1.6; max-width: 420px; margin: 18px 0 24px; }
.action-group { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.action-button { display: flex; align-items: center; justify-content: space-between; min-height: 54px; padding: 13px 20px; border: 1px solid transparent; border-radius: 11px; font-weight: 750; font-size: 15px; }
.action-button:disabled { cursor: not-allowed; opacity: .82; }
.action-button span { font-weight: 400; font-size: 22px; line-height: 1; }
.action-primary { background: var(--mint); color: #13362f; }
.action-secondary { background: var(--surface-raised); color: var(--text); border-color: #42506b; }
.access-note { margin: 10px 0 25px; color: var(--muted); font-size: 12px; }
.cover-frame { position: relative; overflow: hidden; border: 1px solid #34445f; border-radius: 18px; background: #131d33; }
.cover-image { display: block; width: 100%; height: auto; aspect-ratio: 1; }
.cover-caption { position: absolute; left: 20px; right: 20px; bottom: 18px; display: flex; justify-content: space-between; gap: 15px; align-items: center; font-size: 12px; color: #dce5ff; }
.cover-caption span:last-child { font-size: 9px; letter-spacing: .12em; color: #aebddc; }
.reading-strip { display: flex; justify-content: space-between; gap: 10px; padding: 20px 2px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.reading-strip > span { display: inline-flex; align-items: center; gap: 8px; }
.strip-dot { width: 5px; height: 5px; background: var(--lilac); border-radius: 50%; }
.article-content { padding: 7px 0 26px; }
.article-content h2 { margin: 30px 0 13px; font-size: 22px; line-height: 1.35; letter-spacing: -.025em; }
.article-content h3 { margin: 24px 0 10px; font-size: 17px; line-height: 1.45; }
.article-content p { margin: 0 0 16px; color: #c6d1e6; }
.article-content strong { color: var(--text); font-weight: 650; }
.article-content ul, .article-content ol { padding-left: 23px; margin: 0 0 20px; color: #c6d1e6; }
.article-content li { padding-left: 4px; margin-bottom: 9px; }
.article-content li::marker { color: var(--mint); }
.article-content .note { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--mint); border-radius: 0 11px 11px 0; margin: 24px 0 0; padding: 16px 18px; }
.article-content .note p:last-child { margin-bottom: 0; }
.site-footer { border-top: 1px solid var(--line); padding: 24px 0 32px; color: var(--muted); }
.footer-heading { display: flex; justify-content: space-between; align-items: center; gap: 15px; font-size: 12px; }
.footer-heading > span { font-weight: 700; color: var(--text); }
.footer-heading a { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; text-decoration: none; }
.site-footer p { margin: 6px 0 0; font-size: 11px; line-height: 1.65; max-width: 450px; }
@media (max-width: 380px) {
  .site-header { min-height: 84px; gap: 12px; }
  .site-identity { gap: 8px; font-size: 13px; }
  .header-link { font-size: 12px; }
  .hero { padding-top: 28px; }
  .action-button { padding: 12px 14px; }
  .cover-caption { left: 14px; right: 14px; font-size: 10px; }
  .cover-caption span:last-child { font-size: 8px; }
  .article-content h2 { font-size: 20px; }
}
@media (max-width: 300px) {
  .action-group { grid-template-columns: 1fr; }
  .header-link { display: none; }
}