:root {
  color-scheme: dark;
  --bg: #071320;
  --panel: #102944;
  --panel2: #153858;
  --text: #f4f8fc;
  --muted: #b5c9db;
  --accent: #4fc3a1;
  --link: #77c8ff;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 "Segoe UI", sans-serif; }
a { color: var(--link); }
button, .button { border: 0; border-radius: 7px; padding: 10px 14px; background: #21689a; color: white; text-decoration: none; cursor: pointer; display: inline-block; }
.layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); min-height: 100vh; }
.layout.collapsed { grid-template-columns: 74px minmax(0, 1fr); }
.sidebar { padding: 18px 14px; background: #0b2136; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.brand img { width: 44px; height: 44px; }
.brand strong { font-size: 18px; }
.layout.collapsed .nav-label, .layout.collapsed .brand strong { display: none; }
nav a { display: block; margin: 4px 0; padding: 9px 10px; border-radius: 6px; text-decoration: none; color: var(--text); }
nav a:hover, nav a.active { background: var(--panel2); }
main { min-width: 0; padding: 28px clamp(18px, 4vw, 64px) 50px; }
.hero { display: flex; gap: 18px; align-items: center; margin-bottom: 22px; }
.hero img { width: 76px; height: 76px; }
h1 { margin: 0; font-size: clamp(30px, 4vw, 46px); }
h2 { color: var(--accent); margin-top: 0; }
.subtitle, .muted { color: var(--muted); }
.panel { background: var(--panel); border-radius: 12px; padding: 22px; margin: 18px 0; box-shadow: 0 7px 22px #0005; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.notice { border-left: 4px solid #f7c65c; padding-left: 12px; }
.success { border-left: 4px solid var(--accent); padding-left: 12px; }
code, pre { background: #06101b; border-radius: 5px; }
code { padding: 2px 5px; }
pre { padding: 14px; overflow-x: auto; white-space: pre-wrap; }
table { width: auto; max-width: 100%; border-collapse: collapse; }
th, td { text-align: left; vertical-align: top; padding: 10px; border-bottom: 1px solid #31506c; }
.sortable th { cursor: pointer; }
.sortable th:hover { background: #1d4a70; }
footer { margin-top: 28px; color: var(--muted); font-size: 14px; }
@media (max-width: 760px) {
  .layout, .layout.collapsed { display: block; }
  .sidebar { position: static; height: auto; }
  .layout.collapsed nav { display: none; }
  .layout.collapsed .brand strong { display: inline; }
  main { padding: 20px 14px 40px; }
}