:root {
  --bg: #0d0f1a;
  --surface: #161a2b;
  --border: #262b44;
  --text: #e8eaf4;
  --muted: #9aa0bd;
  --cyan: #2bd9ff;
  --blue: #5b9dff;
  --violet: #9a5cff;
  --grad: linear-gradient(90deg, var(--cyan), var(--blue) 50%, var(--violet));
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--blue); }
a:hover { color: var(--cyan); }
img { max-width: 100%; height: auto; }

.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

header.top { border-bottom: 1px solid var(--border); }
header.top .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
header.top nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
header.top nav a { color: var(--muted); text-decoration: none; }
header.top nav a:hover, header.top nav a[aria-current] { color: var(--text); }

.hero { text-align: center; padding: 72px 0 56px; }
.hero img.icon { width: 140px; height: 140px; border-radius: 32px; box-shadow: 0 20px 60px rgba(91, 157, 255, .25); }
.hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.1; margin: 28px 0 14px; letter-spacing: -.02em; }
.hero h1 span { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 640px; margin: 0 auto 32px; }

.btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-block; padding: 13px 22px; border-radius: 12px; font-weight: 600; text-decoration: none; border: 1px solid var(--border); color: var(--text); background: var(--surface); }
.btn.primary { background: var(--grad); border: 0; color: #0d0f1a; }
.btn.primary:hover { color: #0d0f1a; filter: brightness(1.08); }
.btn:hover { color: var(--text); border-color: var(--blue); }
.note { color: var(--muted); font-size: 14px; margin-top: 14px; }

.flow { font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); text-align: center; padding: 18px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }

section { padding: 40px 0; }
section h2 { font-size: 28px; letter-spacing: -.01em; margin: 0 0 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
ol.steps { padding-left: 22px; }
ol.steps li { margin-bottom: 8px; }

.doc { padding: 48px 0 24px; }
.doc h1 { font-size: 36px; letter-spacing: -.02em; margin: 0 0 6px; }
.doc h2 { font-size: 22px; margin: 36px 0 10px; }
.doc .updated { color: var(--muted); margin: 0 0 24px; }
.doc li { margin-bottom: 6px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.doc th { color: var(--muted); font-weight: 600; }
.table-scroll { overflow-x: auto; }
code { font: 14px ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 1px 6px; }

footer { border-top: 1px solid var(--border); margin-top: 48px; padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; }
footer a { color: var(--muted); }
footer .lang { margin-left: auto; }

@media (max-width: 560px) {
  header.top nav { gap: 12px; font-size: 14px; }
  .brand span { display: none; }
  .hero { padding: 48px 0 40px; }
  .hero p.lead { font-size: 18px; }
}