:root {
  color-scheme: light;
  --bg: #07111a;
  --bg-accent: #0c1a26;
  --text: #e6f1f7;
  --muted: #9bb1c1;
  --brand: #18e299;
  --brand-deep: #0fa968;
  --accent: #8cf5cf;
  --line: rgba(140, 245, 207, 0.18);
  --surface: rgba(10, 20, 31, 0.92);
  --surface-strong: rgba(13, 28, 42, 0.98);
  --surface-alt: rgba(12, 34, 31, 0.88);
  --warning: rgba(92, 41, 10, 0.95);
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.28);
  --radius-lg: 28px;
  --radius-md: 22px;
  --radius-sm: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(24, 226, 153, 0.10), transparent 32%),
    linear-gradient(180deg, #08131d 0%, var(--bg) 100%);
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { color: #d9ffef; }
p, li { line-height: 1.72; }
h1, h2, h3 {
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-top: 0;
}
.site-header, footer {
  background: rgba(6, 13, 20, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
footer { border-top: 1px solid rgba(255,255,255,0.05); border-bottom: 0; }
.header-inner, footer p {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}
nav {
  margin-top: 0.35rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
nav a { color: #d9fff0; }
main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}
.eyebrow, .keyword, .section-label {
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.keyword {
  font-family: "Geist Mono", "SFMono-Regular", Consolas, monospace;
  text-transform: none;
  letter-spacing: 0.01em;
  font-size: 0.92rem;
}
.summary {
  font-size: 1.08rem;
  color: #f2fbff;
}
.surface-card {
  background: linear-gradient(180deg, rgba(14, 28, 40, 0.98), rgba(9, 20, 31, 0.96));
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  box-shadow: var(--shadow);
}
.hero-panel {
  padding: 1.7rem;
  background:
    radial-gradient(circle at top right, rgba(24, 226, 153, 0.16), transparent 30%),
    linear-gradient(160deg, rgba(11, 31, 40, 0.98), rgba(6, 14, 24, 0.98));
  border-radius: var(--radius-lg);
  margin-bottom: 1.2rem;
  border: 1px solid rgba(140, 245, 207, 0.16);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}
.hero-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.9fr) minmax(260px, 0.95fr);
  align-items: start;
}
.hero-aside {
  background: linear-gradient(180deg, rgba(14, 30, 29, 0.94), rgba(10, 20, 31, 0.94));
}
.hero-notes { padding-left: 1.15rem; margin-bottom: 0; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.25rem;
}
.pill-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
}
.primary-button {
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  color: #04110c;
}
.secondary-button {
  background: rgba(255,255,255,0.03);
  border-color: rgba(140, 245, 207, 0.22);
  color: #e9fff7;
}
.hero-callouts, .info-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-top: 1.25rem;
}
.article-callouts { margin-top: 1rem; }
.mini-stat, .mini-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1rem;
  background: rgba(255,255,255,0.03);
}
.mini-stat strong {
  display: block;
  font-size: 1.08rem;
  color: #f9fffd;
}
.info-band { margin-bottom: 1rem; }
.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.cards-compact { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.content-grid, .symptom-grid { margin-top: 0.8rem; }
.guide-card, .symptom-card { position: relative; overflow: hidden; }
.guide-card::after, .symptom-card::after {
  content: "";
  position: absolute;
  inset: auto -40px -50px auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24, 226, 153, 0.12), transparent 66%);
}
.checklist, .numbered-list { padding-left: 1.2rem; }
.checklist li, .numbered-list li { margin-bottom: 0.55rem; }
.text-link { font-weight: 700; }
.article-shell {
  max-width: 860px;
  margin: 0 auto;
}
.article-layout > * + * { margin-top: 1rem; }
.article-hero {
  padding: 1.5rem;
  background:
    radial-gradient(circle at top left, rgba(24, 226, 153, 0.14), transparent 30%),
    linear-gradient(145deg, rgba(15, 30, 43, 0.98), rgba(7, 17, 26, 0.98));
}
.article-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.quick-answer-card {
  background: linear-gradient(180deg, rgba(18, 41, 36, 0.96), rgba(11, 21, 30, 0.96));
}
.article-section { margin-bottom: 0; }
.warning-card {
  background: linear-gradient(180deg, rgba(73, 34, 7, 0.97), rgba(55, 23, 5, 0.97));
  border-color: rgba(255, 190, 112, 0.25);
}
@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  main { padding: 1.25rem 0.9rem 3rem; }
  .hero-panel, .article-hero, .surface-card { padding: 1.1rem; }
  .hero-actions { flex-direction: column; }
  .pill-button { width: 100%; }
}