:root { color-scheme: light; --ink: #1c2430; --muted: #5c6b7a; --line: #d5dde6; --brand: #0b5cab; --bg: #f4f7fb; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 "Segoe UI", Arial, sans-serif; color: var(--ink); background: var(--bg); }
a { color: var(--brand); }
header, footer { background: #fff; border-bottom: 1px solid var(--line); }
footer { border-bottom: 0; border-top: 1px solid var(--line); color: var(--muted); margin-top: 3rem; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 16px 20px; }
header .wrap, nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.brand { color: inherit; text-decoration: none; margin-right: auto; }
.brand strong { display: block; }
.brand em { font-style: normal; color: var(--muted); font-size: 0.9rem; }
nav form { margin: 0; }
h1 { font-size: 1.8rem; margin: 0.4rem 0 0.6rem; }
.hero { padding: 12px 0 8px; }
.card, table { background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.card { padding: 16px 18px; max-width: 420px; }
.stack label, fieldset { display: block; margin: 0 0 10px; }
label { font-size: 0.92rem; }
input, select, button { font: inherit; }
input, select { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; margin-top: 4px; }
.row input { width: auto; margin: 0; }
.row, .check { display: flex; gap: 8px; align-items: center; }
.check input { width: auto; margin: 0; }
button { background: var(--brand); color: #fff; border: 0; border-radius: 6px; padding: 8px 14px; cursor: pointer; }
table { width: 100%; border-collapse: collapse; margin: 12px 0 28px; }
th, td { text-align: left; padding: 8px 10px; border-top: 1px solid var(--line); vertical-align: top; }
.list { padding-left: 1.2rem; }
.error { color: #8d1d1d; background: #fdecec; padding: 8px 10px; border-radius: 6px; }
.info { color: #0d4f1e; background: #e8f6ec; padding: 8px 10px; border-radius: 6px; }
.muted { color: var(--muted); font-size: 0.85rem; }
code { background: #eef2f6; padding: 0 4px; }
.tree, .tree ul { list-style: none; padding-left: 1.1rem; margin: 0.2rem 0; }
.tree { padding-left: 0; }
.scroll { overflow-x: auto; }