:root {
  color-scheme: dark;
  --bg: #07110f;
  --bg-soft: #0b1512;
  --surface: #0e1915;
  --surface-2: #111e19;
  --text: #f4f7f3;
  --muted: #91a099;
  --line: rgba(236, 244, 239, .12);
  --line-strong: rgba(200, 255, 77, .24);
  --acid: #c8ff4d;
  --acid-ink: #07110f;
  --danger: #ff8d82;
  --max: 1180px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; min-height: 100vh; background:
  radial-gradient(circle at 72% -10%, rgba(200,255,77,.07), transparent 28%),
  linear-gradient(180deg, #07110f 0%, #08120f 45%, #060d0b 100%); }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(7,17,15,.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.header-inner {
  width: min(calc(100% - 40px), var(--max)); margin: 0 auto;
  min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-weight: 760; letter-spacing: -.025em; }
.brand img { width: 32px; height: 32px; display: block; }
.header-actions { display: flex; align-items: center; gap: 22px; }
.site-nav { display: flex; align-items: center; gap: 22px; color: #a6b2ac; font-size: 13px; font-weight: 650; }
.site-nav a { min-height: 44px; display: inline-flex; align-items: center; }
.site-nav a[aria-current="page"], .site-nav a:hover, .site-nav a:focus-visible { color: #fff; }
.header-cta { min-height: 42px; display: inline-flex; align-items: center; gap: 9px; padding: 0 15px; border-radius: 999px; background: var(--acid); color: var(--acid-ink); font-size: 13px; font-weight: 800; }
.header-cta:hover, .header-cta:focus-visible { background: #d7ff78; outline: none; }

.page-shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.page-hero { padding: clamp(72px, 9vw, 124px) 0 56px; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: clamp(40px, 7vw, 96px); align-items: end; }
.eyebrow { margin: 0 0 15px; color: var(--acid); font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 0; max-width: 800px; font-size: clamp(46px, 7vw, 86px); line-height: .96; letter-spacing: -.06em; font-weight: 700; text-wrap: balance; }
.hero-lede { max-width: 720px; margin: 24px 0 0; color: #a8b4ae; font-size: clamp(17px, 1.65vw, 21px); line-height: 1.62; letter-spacing: -.015em; }
.hero-aside { display: grid; gap: 14px; padding-bottom: 8px; }
.hero-aside p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.hero-aside strong { color: #eef4f0; }
.mini-flow { display: grid; gap: 7px; }
.mini-flow span { min-height: 40px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 12px; border: 1px solid var(--line); border-radius: 11px; background: rgba(255,255,255,.025); font-size: 12px; font-weight: 720; }
.mini-flow span::after { content: "→"; color: var(--acid); opacity: .78; }
.mini-flow span:last-child::after { content: "✓"; }

.content-grid { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(42px, 7vw, 96px); padding: 56px 0 96px; }
.toc { position: sticky; top: 104px; align-self: start; display: grid; gap: 5px; }
.toc-title { margin-bottom: 9px; color: #e5ece7; font-size: 12px; font-weight: 800; }
.toc a { min-height: 38px; display: flex; align-items: center; padding: 0 10px; border-left: 2px solid transparent; color: var(--muted); font-size: 12px; }
.toc a:hover, .toc a:focus-visible { color: #fff; border-left-color: var(--acid); outline: none; }
.article { min-width: 0; max-width: 820px; }
.article > section { scroll-margin-top: 104px; padding: 0 0 58px; }
.article > section + section { padding-top: 6px; border-top: 1px solid var(--line); }
.article h2 { margin: 0 0 16px; padding-top: 48px; font-size: clamp(28px, 3vw, 38px); line-height: 1.05; letter-spacing: -.04em; }
.article > section:first-child h2 { padding-top: 0; }
.article h3 { margin: 28px 0 10px; font-size: 18px; letter-spacing: -.025em; }
.article p, .article li { color: #aab6b0; font-size: 15px; line-height: 1.72; }
.article p { margin: 0 0 16px; }
.article strong { color: #edf3ef; }
.article ul, .article ol { margin: 16px 0 0; padding-left: 22px; }
.article li + li { margin-top: 8px; }

.step-list { display: grid; gap: 10px; margin-top: 24px; counter-reset: steps; }
.step { display: grid; grid-template-columns: 46px minmax(0,1fr); gap: 15px; padding: 18px 18px 18px 14px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.025); }
.step::before { counter-increment: steps; content: counter(steps); width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: var(--acid); color: var(--acid-ink); font-size: 12px; font-weight: 900; }
.step h3 { margin: 2px 0 5px; font-size: 16px; }
.step p { margin: 0; font-size: 14px; }

.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin-top: 24px; }
.feature { min-height: 160px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.025); }
.feature-mark { width: 34px; height: 34px; display: grid; place-items: center; margin-bottom: 32px; border-radius: 10px; background: rgba(200,255,77,.09); color: var(--acid); font-size: 15px; font-weight: 900; }
.feature h3 { margin: 0 0 7px; font-size: 16px; }
.feature p { margin: 0; font-size: 13px; line-height: 1.6; }

.callout { margin: 24px 0; padding: 18px 20px; border: 1px solid var(--line-strong); border-radius: 14px; background: rgba(200,255,77,.045); }
.callout strong { display: block; margin-bottom: 5px; color: var(--acid); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.callout p { margin: 0; }

.code-block { position: relative; margin: 18px 0 24px; border: 1px solid var(--line); border-radius: 15px; background: #050a08; overflow: hidden; }
.code-head { min-height: 42px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 14px; border-bottom: 1px solid var(--line); color: #85938c; font-size: 11px; font-weight: 700; }
.code-block pre { margin: 0; padding: 18px; overflow-x: auto; color: #d9e3dd; font-size: 12px; line-height: 1.65; tab-size: 2; }
.code-block .accent { color: var(--acid); }
.inline-code { padding: .15em .4em; border: 1px solid var(--line); border-radius: 6px; background: rgba(255,255,255,.035); color: #dfe7e2; font-size: .9em; }

.endpoint-list { display: grid; gap: 8px; margin-top: 18px; }
.endpoint { display: grid; grid-template-columns: 68px minmax(0,1fr); gap: 12px; align-items: start; padding: 11px 12px; border-top: 1px solid var(--line); }
.endpoint:last-child { border-bottom: 1px solid var(--line); }
.method { width: max-content; padding: 3px 6px; border-radius: 6px; background: rgba(200,255,77,.1); color: var(--acid); font: 800 10px ui-monospace, SFMono-Regular, Menlo, monospace; }
.endpoint code { overflow-wrap: anywhere; color: #d9e3dd; font-size: 12px; }
.endpoint p { margin: 3px 0 0; font-size: 12px; }

.principle-row { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 20px 0; border-top: 1px solid var(--line); }
.principle-row:last-child { border-bottom: 1px solid var(--line); }
.principle-row strong { font-size: 13px; }
.principle-row p { margin: 0; font-size: 14px; }

.legal-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 22px; color: var(--muted); font-size: 12px; }

.page-cta { margin: 8px 0 96px; padding: clamp(28px, 5vw, 54px); display: flex; align-items: center; justify-content: space-between; gap: 30px; border: 1px solid var(--line-strong); border-radius: 22px; background: linear-gradient(135deg, rgba(200,255,77,.08), rgba(200,255,77,.025)); }
.page-cta h2 { margin: 0; font-size: clamp(28px, 4vw, 48px); letter-spacing: -.05em; line-height: 1; }
.page-cta p { max-width: 650px; margin: 10px 0 0; color: var(--muted); }
.cta-link { flex: none; min-height: 48px; display: inline-flex; align-items: center; gap: 14px; padding: 0 18px; border-radius: 12px; background: var(--acid); color: var(--acid-ink); font-size: 13px; font-weight: 850; }

.site-footer { border-top: 1px solid var(--line); }
.footer-inner { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; min-height: 120px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.footer-brand { display: grid; gap: 7px; }
.footer-brand .brand { width: max-content; }
.footer-brand p { margin: 0; color: var(--muted); font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 20px; color: var(--muted); font-size: 12px; }
.footer-links a { min-height: 40px; display: inline-flex; align-items: center; }
.footer-links a:hover, .footer-links a:focus-visible { color: #fff; }

@media (max-width: 820px) {
  .site-nav { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-aside { max-width: 460px; }
  .content-grid { grid-template-columns: 1fr; gap: 28px; }
  .toc { position: static; grid-template-columns: repeat(2, minmax(0,1fr)); padding-bottom: 18px; border-bottom: 1px solid var(--line); }
  .toc-title { grid-column: 1 / -1; }
  .toc a { border-left: 0; border-bottom: 1px solid transparent; padding: 0; }
  .toc a:hover, .toc a:focus-visible { border-left-color: transparent; border-bottom-color: var(--acid); }
}

@media (max-width: 620px) {
  .header-inner, .page-shell, .footer-inner { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 64px; }
  .header-cta { min-height: 40px; padding-inline: 13px; }
  .page-hero { padding: 58px 0 40px; }
  h1 { font-size: clamp(42px, 13vw, 62px); }
  .hero-lede { font-size: 16px; }
  .content-grid { padding: 38px 0 72px; }
  .toc { grid-template-columns: 1fr; }
  .article > section { padding-bottom: 44px; }
  .article h2 { padding-top: 36px; font-size: 29px; }
  .feature-grid { grid-template-columns: 1fr; }
  .principle-row { grid-template-columns: 1fr; gap: 8px; }
  .page-cta { margin-bottom: 68px; padding: 24px; align-items: flex-start; flex-direction: column; }
  .footer-inner { min-height: 160px; grid-template-columns: 1fr; gap: 18px; padding: 28px 0; }
  .footer-links { justify-content: flex-start; }
}

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