:root {
  --bg: #0b0f1a;
  --panel: #121829;
  --panel-2: #1a2138;
  --border: #243056;
  --text: #e6ecff;
  --muted: #8a99c2;
  --accent: #6ea8ff;
  --accent-2: #9b8bff;
  --green: #4ade80;
  --amber: #fbbf24;
  --red: #f87171;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: radial-gradient(ellipse at top, #1a2138 0%, var(--bg) 60%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
  min-height: 100vh;
}
.container { max-width: 1100px; margin: 0 auto; padding: 48px 28px 80px; }
header { border-bottom: 1px solid var(--border); padding-bottom: 28px; margin-bottom: 40px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
h1 {
  font-size: 38px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.subtitle { color: var(--muted); font-size: 16px; margin: 0; max-width: 760px; }
.meta-row { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.meta-pill {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  color: var(--muted);
}
.meta-pill strong { color: var(--text); margin-left: 6px; }
.meta-pill.rev { color: var(--amber); border-color: rgba(251, 191, 36, 0.4); }
.meta-pill.rev strong { color: var(--amber); }
section { margin-bottom: 40px; }
h2 {
  font-size: 22px;
  margin: 0 0 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
h2 .num {
  display: inline-block;
  width: 30px;
  height: 30px;
  line-height: 30px;
  text-align: center;
  border-radius: 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  font-size: 14px;
  color: var(--accent);
  margin-right: 10px;
  vertical-align: middle;
}
.diff-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .diff-grid { grid-template-columns: 1fr; } }
.diff-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 22px; }
.diff-card h3 { margin: 0 0 14px; font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; }
.diff-card.bad h3 { color: var(--red); }
.diff-card.good h3 { color: var(--green); }
.diff-card ul { margin: 0; padding: 0; list-style: none; }
.diff-card li { padding: 7px 0; color: var(--muted); font-size: 14px; display: grid; grid-template-columns: 18px 1fr; gap: 10px; }
.diff-card.bad li::before { content: "✕"; color: var(--red); font-weight: 700; }
.diff-card.good li::before { content: "✓"; color: var(--green); font-weight: 700; }
table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
th, td { padding: 12px 16px; text-align: left; font-size: 14px; }
th { background: var(--panel-2); color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: 0.1em; }
td { color: var(--text); border-top: 1px solid var(--border); }
td code { background: var(--panel-2); padding: 2px 6px; border-radius: 4px; font-size: 12px; }
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin-top: 12px; }
@media (max-width: 900px) { .flow { grid-template-columns: repeat(2, 1fr); } }
.flow-step {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  position: relative;
}
.flow-step::after {
  content: "→";
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
}
.flow-step:last-child::after { display: none; }
.flow-step .n {
  width: 32px; height: 32px; line-height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0f1a; font-weight: 700; margin: 0 auto 10px;
}
.flow-step .label { font-size: 13px; font-weight: 600; }
.flow-step .cmd { font-size: 11px; color: var(--muted); font-family: "SF Mono", Menlo, monospace; margin-top: 6px; }
.prompt {
  background: #060912;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 12.5px;
  color: #c9d4f0;
  white-space: pre-wrap;
  line-height: 1.7;
  overflow-x: auto;
}
.prompt .section { color: var(--accent); font-weight: 700; display: block; margin-top: 12px; }
.prompt .var { color: var(--amber); }
.prompt .cmd { color: #9b8bff; }
.prompt .ok { color: var(--green); }
.prompt .rule { color: var(--red); }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 22px; }
.panel h3 { margin: 0 0 12px; font-size: 15px; font-weight: 600; }
.panel p, .panel li { color: var(--muted); font-size: 14px; }
.panel.warn { border-left: 3px solid var(--amber); }
.panel.warn h3 { color: var(--amber); }
.panel.good { border-left: 3px solid var(--green); }
.panel.good h3 { color: var(--green); }
footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.question {
  background: linear-gradient(135deg, rgba(110, 168, 255, 0.05), rgba(155, 139, 255, 0.05));
  border: 1px solid var(--accent);
  border-radius: 14px;
  padding: 22px;
  margin-top: 30px;
}
.question h3 { margin: 0 0 12px; color: var(--accent); }