:root {
  color-scheme: dark;
  --bg: #081120;
  --bg-soft: #101b2f;
  --panel: rgba(15, 23, 42, 0.78);
  --panel-strong: rgba(15, 23, 42, 0.92);
  --line: rgba(148, 163, 184, 0.18);
  --text: #f8fafc;
  --muted: #a8b3c7;
  --blue: #3b82f6;
  --gold: #f59e0b;
  --green: #22c55e;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(59, 130, 246, 0.20), transparent 32rem),
    radial-gradient(circle at 85% 5%, rgba(245, 158, 11, 0.14), transparent 30rem),
    linear-gradient(180deg, #06101f 0%, #0f172a 44%, #081120 100%);
}

a {
  color: inherit;
}

.guide-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.guide-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 13, 31, 0.86);
  backdrop-filter: blur(18px);
}

.guide-nav-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand span {
  color: #60a5fa;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: flex-end;
  font-size: 0.92rem;
  color: var(--muted);
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
}

.guide-hero {
  padding: 88px 0 44px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 8px 13px;
  border: 1px solid rgba(96, 165, 250, 0.22);
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.08);
  color: #bfdbfe;
  font-size: 0.82rem;
  font-weight: 700;
}

h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 4.85rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: #cbd5e1;
  font-size: clamp(1.04rem, 2.2vw, 1.22rem);
  line-height: 1.72;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 800;
}

.button.primary {
  background: linear-gradient(135deg, #2563eb, #60a5fa);
  color: white;
}

.button.secondary {
  border-color: rgba(245, 158, 11, 0.32);
  background: rgba(245, 158, 11, 0.10);
  color: #fcd34d;
}

.guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 28px;
  align-items: start;
  padding: 20px 0 68px;
}

.content-card,
.side-card,
.guide-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.28);
}

.content-card {
  padding: clamp(24px, 4vw, 42px);
}

.content-card h2,
.content-card h3 {
  margin: 34px 0 12px;
  line-height: 1.16;
  letter-spacing: 0;
}

.content-card h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
}

.content-card h3 {
  font-size: 1.25rem;
}

.content-card p,
.content-card li {
  color: var(--muted);
  line-height: 1.75;
}

.content-card p:first-child {
  margin-top: 0;
}

.content-card ul,
.content-card ol {
  padding-left: 1.25rem;
}

.side-stack {
  display: grid;
  gap: 16px;
}

.side-card {
  padding: 22px;
}

.side-card h2,
.side-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.side-card p,
.side-card li {
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.95rem;
}

.search-intent-card {
  margin-top: 28px;
  padding: 20px;
  border: 1px solid rgba(96, 165, 250, 0.22);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(15, 23, 42, 0.72)),
    rgba(15, 23, 42, 0.62);
}

.search-intent-card h2 {
  margin-top: 0;
}

.intent-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.intent-grid li {
  min-height: 42px;
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: #dbeafe;
  font-size: 0.94rem;
  line-height: 1.35;
}

.intent-note {
  margin: 14px 0 0;
  color: #94a3b8;
  font-size: 0.9rem;
}

.mini-list {
  margin: 12px 0 0;
  padding-left: 1.1rem;
}

.internal-guides {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 20px 0 78px;
}

.guide-card {
  min-height: 145px;
  padding: 20px;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.guide-card:hover {
  transform: translateY(-3px);
  border-color: rgba(96, 165, 250, 0.48);
}

.guide-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.guide-card span {
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.94rem;
}

.disclaimer {
  margin-top: 26px;
  padding: 16px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 14px;
  color: #94a3b8;
  background: rgba(15, 23, 42, 0.50);
  font-size: 0.88rem;
  line-height: 1.6;
}

.guide-footer {
  border-top: 1px solid var(--line);
  background: #060d1f;
  padding: 34px 0;
  color: #64748b;
  font-size: 0.88rem;
}

.guide-footer a {
  color: #94a3b8;
  text-decoration: none;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-bottom: 12px;
}

@media (max-width: 860px) {
  .guide-nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .guide-hero {
    padding-top: 56px;
  }

  .guide-grid,
  .internal-guides {
    grid-template-columns: 1fr;
  }

  .intent-grid {
    grid-template-columns: 1fr;
  }
}