:root {
  --bg: #0c1117;
  --card: #1a2332;
  --border: #2d3a4d;
  --text: #e7edf5;
  --muted: #8fa3b8;
  --primary: #0b5cab;
  --ok: #22c55e;
  --err: #ef4444;
  --warn: #f59e0b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  padding: 1.5rem;
  max-width: 920px;
  margin: 0 auto;
}
body.rtl { direction: rtl; text-align: right; }
a { color: var(--primary); }
.help-top {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.help-top img { width: 48px; height: 48px; border-radius: 10px; background: #fff; padding: 4px; }
.help-top h1 { font-size: 1.35rem; }
.help-top p { color: var(--muted); font-size: .9rem; }
.help-nav { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.5rem; }
.help-nav a {
  text-decoration: none;
  font-size: .82rem;
  padding: .35rem .7rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
}
.help-nav a:hover, .help-nav a.on { background: var(--primary); border-color: var(--primary); color: #fff; }
h2 { color: var(--primary); font-size: 1.1rem; margin: 1.5rem 0 .75rem; }
h3 { font-size: .95rem; margin: 1rem 0 .5rem; color: var(--text); }
p, li { font-size: .92rem; margin-bottom: .6rem; }
ul, ol { padding-left: 1.25rem; margin-bottom: 1rem; }
body.rtl ul, body.rtl ol { padding-left: 0; padding-right: 1.25rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}
.card h2 { margin-top: 0; font-size: 1rem; }
.tip { border-left: 3px solid var(--ok); padding-left: .85rem; }
body.rtl .tip { border-left: none; border-right: 3px solid var(--ok); padding-left: 0; padding-right: .85rem; }
.warn { border-left: 3px solid var(--warn); padding-left: .85rem; }
body.rtl .warn { border-left: none; border-right: 3px solid var(--warn); padding-left: 0; padding-right: .85rem; }
table { width: 100%; border-collapse: collapse; font-size: .85rem; margin: .75rem 0 1rem; }
th, td { border: 1px solid var(--border); padding: .5rem .65rem; text-align: left; vertical-align: top; }
body.rtl th, body.rtl td { text-align: right; }
th { background: var(--card); color: var(--muted); }
code, pre {
  background: #0a0f14;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .82rem;
}
code { padding: .1rem .35rem; }
pre { padding: .85rem; overflow-x: auto; margin: .75rem 0 1rem; white-space: pre-wrap; }
.badge {
  display: inline-block;
  padding: .15rem .45rem;
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 600;
  background: #1e3a5f;
  color: #93c5fd;
}
footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--border); color: var(--muted); font-size: .8rem; }
.vendor-footer {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.55;
  text-align: center;
}
.vendor-footer a { color: var(--primary); text-decoration: none; }
.vendor-footer a:hover { text-decoration: underline; }