:root { --bg: #f4f6fc; --ink: #1b2140; --muted: #5a6390; --line: #d5dbef; --acc: #1b5fd1; --hi: #fff4e5; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 Rubik, system-ui, -apple-system, Segoe UI, sans-serif; }
header { background: #0b1030; color: #fff; padding: 18px 16px; }
header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
header b { font-size: 1.15rem; }
header a { color: #c8ff3d; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
main { padding: 24px 0 60px; }
h1 { font-size: 1.8rem; margin: 0 0 4px; }
h2 { font-size: 1.2rem; margin: 28px 0 8px; padding-bottom: 4px; border-bottom: 2px solid #ff7a1a; }
h3 { font-size: 1.02rem; margin: 16px 0 4px; }
p, li { margin: 6px 0; }
.meta { color: var(--muted); font-size: .9rem; }
.box { background: var(--hi); border-left: 4px solid #f2a03b; padding: 10px 14px; border-radius: 6px; margin: 12px 0; }
.fill { background: #fff3a8; padding: 0 4px; border-radius: 3px; }
table { border-collapse: collapse; width: 100%; margin: 8px 0; font-size: .92rem; background: #fff; }
th, td { border: 1px solid var(--line); padding: 8px; text-align: left; vertical-align: top; }
th { background: #e9eefb; }
nav.toc { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; margin: 14px 0; }
nav.toc a { color: var(--acc); }
footer { color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); padding-top: 12px; margin-top: 30px; }
@media print { header { background: none; color: #000; } .no-print { display: none; } }