:root {
  --ink: #1f2330;
  --soft: #555c6e;
  --line: #e4e7ef;
  --accent: #2191FB;
  --tip-bg: #eaf4ff;
  --tip-line: #2191FB;
  --ok-bg: #e9faf6;
  --ok-line: #41D3BD;
  --help-bg: #fff6ec;
  --help-line: #e08a2b;
  --code-bg: #1f2330;
  --code-ink: #f4f6fb;
  --nav: #006571;
  --nav-current: #F902A8;
  --step-num: #006571;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  line-height: 1.65;
  background: #fbfbfd;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 20px 80px; }
nav.site-nav {
  border-bottom: 1px solid var(--line);
  padding: 0 0 18px;
  margin-bottom: 28px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.92rem;
}
nav.site-nav a {
  color: var(--nav);
  text-decoration: none;
  font-weight: 600;
}
nav.site-nav a:hover { color: var(--nav-current); }
nav.site-nav a.current {
  color: var(--nav-current);
  text-decoration: underline;
  text-underline-offset: 4px;
}
header { padding: 16px 0 8px; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 6px; }
.sub { color: var(--soft); font-size: 1.05rem; margin: 0 0 4px; }
.time { color: var(--soft); font-size: 0.95rem; }
h2 {
  font-size: 1.3rem; margin: 44px 0 4px; padding-top: 20px;
  border-top: 2px solid #cfe2fa;
}
h2 .num {
  display: inline-block; min-width: 1.8rem; color: var(--nav-current); font-weight: 700;
}
h3 {
  font-size: 1.05rem; margin: 26px 0 4px; color: var(--nav);
}
ul li::marker { color: var(--accent); }
ol li::marker { color: var(--step-num); font-weight: 700; }
code {
  background: #eef2f7;
  border: 1px solid #dce3ed;
  border-radius: 4px;
  padding: 1px 6px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  color: var(--ink);
}
ol.steps { padding-left: 1.3rem; margin: 12px 0; }
ol.steps > li { margin: 8px 0; }
p { margin: 12px 0; }
a { color: var(--accent); }
.callout {
  border-left: 4px solid var(--tip-line);
  background: var(--tip-bg);
  padding: 12px 16px; border-radius: 6px; margin: 16px 0;
}
.callout.ok { border-color: var(--ok-line); background: var(--ok-bg); }
.callout.help { border-color: var(--help-line); background: var(--help-bg); }
.callout .label {
  display: block; font-weight: 700; font-size: 0.82rem;
  text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px;
}
.callout.ok .label { color: var(--ok-line); }
.callout.help .label { color: var(--help-line); }
.callout.tip .label { color: var(--tip-line); }
.cmd {
  display: flex; align-items: stretch; gap: 0; margin: 14px 0;
  background: var(--code-bg); border-radius: 8px; overflow: hidden;
}
.cmd code {
  flex: 1; color: var(--code-ink); font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.95rem; padding: 12px 14px; white-space: pre-wrap; word-break: break-word;
  background: transparent; border: 0; border-radius: 0;
}
.cmd button {
  border: 0; background: rgba(255,255,255,0.12); color: #fff;
  padding: 0 16px; cursor: pointer; font-size: 0.85rem; font-weight: 600;
  transition: background 0.15s;
}
.cmd button:hover { background: rgba(255,255,255,0.25); }
.cmd button.copied { background: var(--ok-line); }
kbd {
  background: #fff; border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 4px; padding: 1px 6px; font-size: 0.85rem; font-family: inherit;
}
.pill {
  display: inline-block; background: #eef0f6; color: var(--soft);
  font-size: 0.8rem; padding: 2px 10px; border-radius: 999px; margin-top: 6px;
}
.glossary-term {
  font-size: 1.05rem; font-weight: 700; margin: 26px 0 4px; color: var(--nav);
}
.glossary-term code { font-size: 0.95rem; }
.toc {
  background: var(--tip-bg); border: 1px solid #cfe2fa; border-radius: 8px;
  padding: 16px 20px; margin: 20px 0 28px;
}
.toc h3 { margin: 0 0 8px; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--nav); }
.toc ul { margin: 0; padding-left: 1.2rem; }
.toc li { margin: 4px 0; }
footer {
  margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line);
  color: var(--soft); font-size: 0.95rem;
}