:root {
  --bg: #07070b;
  --panel: #111118;
  --line: rgba(255, 255, 255, .11);
  --text: #f5f4f1;
  --muted: #9696a3;
  --acid: #c8ff35;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at 85% 5%, rgba(135,92,255,.15), transparent 29rem), var(--bg);
  font-family: "Manrope", sans-serif;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
.shell { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.topbar { min-height: 72px; padding: 0 18px; margin-top: 16px; position: sticky; top: 16px; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid var(--line); border-radius: 18px; background: rgba(10,10,15,.82); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; }
.brand-logo { min-width: 76px; padding: 7px 10px 6px; display: inline-flex; align-items: baseline; border: 1px solid rgba(255,255,255,.17); border-radius: 5px; background: #050508; font-size: 15px; font-weight: 800; letter-spacing: .05em; line-height: 1; }
.brand-logo i { color: #7379ff; font-style: normal; }
.topbar nav, .footer nav { display: flex; gap: 22px; color: #aaa9b3; font-size: 12px; }
.topbar nav a:hover, .footer nav a:hover { color: white; }
.cta { padding: 11px 16px; border-radius: 11px; color: #09090b; background: var(--acid); font-size: 12px; font-weight: 800; }
.guide-hero { padding: 112px 0 76px; border-bottom: 1px solid var(--line); }
.breadcrumbs { display: flex; gap: 8px; color: #73727e; font: 500 10px "DM Mono", monospace; letter-spacing: .06em; }
.breadcrumbs a:hover { color: var(--acid); }
.guide-hero h1 { max-width: 900px; margin: 28px 0 24px; font-size: clamp(46px, 7vw, 82px); font-weight: 600; letter-spacing: -.065em; line-height: .98; }
.guide-hero h1 em { color: var(--acid); font-family: Georgia, serif; font-weight: 400; }
.guide-hero > p { max-width: 720px; margin: 0; color: #aaa9b3; font-size: 18px; }
.guide-meta { margin-top: 30px; display: flex; gap: 8px; flex-wrap: wrap; }
.guide-meta span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 7px; color: #83828e; font: 500 9px "DM Mono", monospace; letter-spacing: .07em; }
.article-layout { padding: 80px 0 120px; display: grid; grid-template-columns: 230px minmax(0, 720px); justify-content: space-between; gap: 72px; }
.toc { align-self: start; position: sticky; top: 112px; }
.toc strong { display: block; margin-bottom: 16px; color: #6d6c77; font: 500 9px "DM Mono", monospace; letter-spacing: .11em; text-transform: uppercase; }
.toc a { padding: 8px 0; display: block; color: #92919c; border-bottom: 1px solid rgba(255,255,255,.055); font-size: 12px; }
.toc a:hover { color: var(--acid); }
.article h2 { margin: 68px 0 18px; font-size: clamp(30px, 4vw, 46px); letter-spacing: -.05em; line-height: 1.08; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin: 32px 0 10px; font-size: 20px; letter-spacing: -.025em; }
.article p { margin: 0 0 20px; color: #aaa9b3; font-size: 15px; }
.article strong { color: #e9e8ec; }
.steps { margin: 28px 0; display: grid; gap: 12px; counter-reset: step; }
.step { padding: 24px 24px 24px 78px; position: relative; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(145deg, rgba(255,255,255,.045), rgba(255,255,255,.012)); counter-increment: step; }
.step::before { content: counter(step, decimal-leading-zero); width: 38px; height: 38px; position: absolute; left: 22px; top: 24px; display: grid; place-items: center; border-radius: 10px; color: #09090b; background: var(--acid); font: 700 10px "DM Mono", monospace; }
.step h3 { margin: 0 0 6px; font-size: 16px; }
.step p { margin: 0; font-size: 13px; }
.note { margin: 30px 0; padding: 22px; display: grid; grid-template-columns: auto 1fr; gap: 14px; border: 1px solid rgba(200,255,53,.2); border-radius: 14px; background: rgba(200,255,53,.04); }
.note b { color: var(--acid); font: 700 9px "DM Mono", monospace; letter-spacing: .08em; }
.note p { margin: 0; font-size: 13px; }
.checklist { margin: 22px 0; padding: 0; list-style: none; }
.checklist li { padding: 13px 0 13px 32px; position: relative; border-bottom: 1px solid rgba(255,255,255,.07); color: #aaa9b3; font-size: 14px; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--acid); font-weight: 800; }
.platform-table { margin: 30px 0; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; }
.platform-row { padding: 20px; display: grid; grid-template-columns: 160px 1fr; gap: 24px; border-bottom: 1px solid var(--line); }
.platform-row:last-child { border-bottom: 0; }
.platform-row b { color: var(--acid); }
.platform-row span { color: #aaa9b3; font-size: 13px; }
.related { padding: 70px 0; border-top: 1px solid var(--line); }
.related-head { margin-bottom: 28px; display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.related-head h2 { margin: 0; font-size: 34px; letter-spacing: -.045em; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.related-card { min-height: 160px; padding: 22px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.02); }
.related-card span { color: #73727e; font: 500 8px "DM Mono", monospace; }
.related-card b { margin-top: 28px; font-size: 15px; line-height: 1.3; }
.related-card i { margin-top: auto; padding-top: 18px; color: var(--acid); font-size: 10px; font-style: normal; }
.related-card.current { opacity: .48; pointer-events: none; }
.footer { min-height: 110px; display: flex; align-items: center; justify-content: space-between; gap: 28px; border-top: 1px solid var(--line); color: #6f6e79; font-size: 10px; }

@media (max-width: 800px) {
  .shell { width: min(100% - 28px, 650px); }
  .topbar nav { display: none; }
  .guide-hero { padding-top: 86px; }
  .guide-hero > p { font-size: 16px; }
  .article-layout { grid-template-columns: 1fr; gap: 44px; padding-top: 55px; }
  .toc { position: static; }
  .toc a { display: inline-block; margin-right: 14px; border: 0; }
  .related-grid { grid-template-columns: 1fr; }
  .footer { padding-block: 35px; flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .topbar { min-height: 62px; margin-top: 10px; top: 10px; }
  .cta { padding: 9px 11px; }
  .guide-hero h1 { font-size: 44px; }
  .step { padding: 68px 20px 20px; }
  .step::before { left: 20px; top: 18px; }
  .platform-row { grid-template-columns: 1fr; gap: 8px; }
  .footer nav { flex-wrap: wrap; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}