:root {
  color-scheme: dark;
  --bg: #060913;
  --panel: rgba(15, 23, 42, .72);
  --panel2: rgba(8, 15, 28, .9);
  --text: #f6fbff;
  --muted: #aebbd0;
  --line: rgba(148, 163, 184, .2);
  --cyan: #00e5ff;
  --violet: #8b5cf6;
  --green: #20e08a;
  --max: 1180px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0, rgba(0, 229, 255, .16), transparent 32%),
    radial-gradient(circle at 90% 10%, rgba(139, 92, 246, .18), transparent 34%),
    linear-gradient(180deg, #060913 0%, #08101d 58%, #05070d 100%);
  color: var(--text);
  line-height: 1.68;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }

.guide-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px max(18px, calc((100vw - var(--max)) / 2));
  background: rgba(5, 8, 15, .86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.guide-nav > a { font-weight: 1000; font-size: 1.18rem; color: #fff; }
.guide-nav nav { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.guide-nav nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(148, 163, 184, .18);
  border-radius: 13px;
  padding: 0 14px;
  color: #dcecff;
  font-weight: 900;
  background: rgba(255, 255, 255, .04);
}
.guide-nav nav a:last-child {
  color: #041019;
  border: 0;
  background: linear-gradient(135deg, var(--cyan), #4f8cff);
}

.guide-hero,
.guide-wrap {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}
.guide-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, .52fr);
  gap: 28px;
  align-items: stretch;
  padding: clamp(48px, 8vw, 92px) 0 34px;
}
.guide-hero > div,
.guide-hero aside,
.guide-card,
.guide-cta {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(15, 23, 42, .76), rgba(9, 16, 29, .72));
  border-radius: 28px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, .24);
}
.guide-hero > div { padding: clamp(24px, 4vw, 42px); }
.guide-hero aside { padding: 26px; display: grid; align-content: center; }
.guide-hero span {
  color: var(--cyan);
  font-weight: 1000;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: .78rem;
}
h1 {
  margin: 12px 0 18px;
  font-size: clamp(2.3rem, 5.8vw, 5.4rem);
  line-height: .96;
  letter-spacing: -.03em;
}
h2 {
  margin: 0 0 14px;
  font-size: clamp(1.55rem, 3vw, 2.5rem);
  line-height: 1.08;
}
h3 { margin: 0 0 8px; font-size: 1.35rem; }
.guide-hero p,
.guide-card p,
.guide-card li,
.guide-footer {
  color: var(--muted);
}
.guide-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.guide-actions a,
.guide-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  border-radius: 15px;
  padding: 0 18px;
  font-weight: 1000;
  background: linear-gradient(135deg, var(--cyan), #4f8cff);
  color: #041019;
}
.guide-actions a:nth-child(2) {
  color: #eaf6ff;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(148, 163, 184, .2);
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.guide-card {
  padding: clamp(20px, 3vw, 30px);
  margin-bottom: 18px;
}
.guide-card ul,
.guide-card ol { margin: 0; padding-left: 22px; }
.checklist {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.checklist span,
.related a,
.tile-grid .guide-tile {
  border: 1px solid rgba(0, 229, 255, .18);
  background: rgba(0, 229, 255, .055);
  border-radius: 16px;
  padding: 13px;
  font-weight: 900;
  color: #dff8ff;
}
.faq {
  display: grid;
  gap: 10px;
}
.faq details {
  border: 1px solid rgba(148, 163, 184, .18);
  border-radius: 16px;
  padding: 15px 17px;
  background: rgba(255, 255, 255, .04);
}
.faq summary { cursor: pointer; font-weight: 1000; color: #fff; }
.faq div { margin-top: 10px; color: var(--muted); }
.related {
  display: grid;
  gap: 10px;
}
.guide-card a { color: #9af6ff; text-decoration: underline; text-underline-offset: 3px; }
.guide-cta {
  margin: 26px auto 44px;
  padding: clamp(24px, 4vw, 42px);
  background: linear-gradient(135deg, rgba(0, 229, 255, .14), rgba(139, 92, 246, .12));
}
.tile-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding-bottom: 44px;
}
.guide-tile {
  display: grid;
  gap: 7px;
  text-decoration: none !important;
}
.guide-tile span {
  color: var(--cyan);
  font-size: .76rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.guide-tile strong { color: #fff; font-size: 1.12rem; line-height: 1.12; }
.guide-tile small { color: var(--muted); line-height: 1.45; }
.guide-footer {
  border-top: 1px solid var(--line);
  padding: 28px max(18px, calc((100vw - var(--max)) / 2));
  text-align: center;
}

@media (max-width: 860px) {
  body { font-size: 16px; }
  .guide-nav { align-items: flex-start; flex-direction: column; }
  .guide-nav nav { justify-content: flex-start; }
  .guide-hero,
  .guide-grid,
  .tile-grid {
    grid-template-columns: 1fr;
  }
  .checklist { grid-template-columns: 1fr; }
  .guide-actions a { width: 100%; }
}