:root {
  --bg: #f7f8fb;
  --card: #ffffff;
  --text: #141824;
  --muted: #5c6578;
  --line: #e6e8f0;
  --accent: #3730a3;
  --accent-soft: #eef0ff;
  --ok: #0f6b4c;
  --warn: #8a4b08;
  --warn-bg: #fff4e5;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 12px 32px rgba(16, 24, 40, 0.06);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--sans); line-height: 1.55; }
body { min-height: 100vh; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); }
h1, h2, h3, p { margin: 0; }
h1 { font-size: clamp(32px, 5vw, 46px); letter-spacing: -0.03em; line-height: 1.15; }
h2 { font-size: clamp(22px, 3vw, 30px); letter-spacing: -0.02em; margin: 32px 0 12px; }
h3 { font-size: 18px; margin: 0 0 8px; }
.wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
header.site { background: #fff; border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; padding: 14px 0; }
nav { display: flex; flex-wrap: wrap; gap: 12px 16px; }
nav a { text-decoration: none; font-weight: 650; }
.hero { padding: 36px 0 8px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.lead { margin-top: 14px; font-size: 18px; max-width: 46rem; }
.note { color: var(--muted); margin-top: 10px; }
.stamp { display: inline-block; background: var(--accent-soft); color: var(--accent); font-weight: 700; border-radius: 999px; padding: 2px 8px; font-size: 12px; }
.badge { display: inline-block; background: var(--warn-bg); color: var(--warn); font-weight: 700; border-radius: 999px; padding: 2px 8px; font-size: 12px; letter-spacing: 0.04em; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; box-shadow: var(--shadow); }
.card .k { color: var(--muted); font-size: 13px; }
.card .v { margin-top: 6px; font-family: var(--mono); font-size: 14px; word-break: break-word; }
.table-scroll { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; min-width: 640px; }
th, td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: #fafbff; font-size: 13px; }
code, .mono { font-family: var(--mono); font-size: 13px; }
figure { margin: 16px 0; }
figcaption { color: var(--muted); font-size: 14px; margin-top: 8px; }
footer { margin: 36px 0 48px; color: var(--muted); font-size: 14px; }
pre { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.step a { text-decoration: none; }