:root { --navy: #011429; --orange: #FA6403; --ink: #1b2a3f; --muted: #5b6b7f; --line: #e3e8ef; --bg: #f5f7fa; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Arial, sans-serif; }
header { background: var(--navy); color: #fff; padding: 18px 16px; }
header .wrap { display: flex; align-items: center; gap: 12px; }
header img { height: 34px; width: auto; }
header a { color: #fff; text-decoration: none; font-weight: 800; letter-spacing: .06em; }
header a span { color: var(--orange); }
.wrap { max-width: 820px; margin: 0 auto; padding: 0 16px; }
main { padding: 28px 0 56px; }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 6px; color: var(--navy); }
h2 { font-size: 19px; margin: 30px 0 8px; color: var(--navy); padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 18px 0 6px; }
p, li { color: var(--ink); }
ul { padding-left: 22px; }
.meta { color: var(--muted); font-size: 14px; }
.draft { background: #fff4ec; border: 1px solid #ffcfae; color: #7a3300; border-radius: 12px; padding: 12px 14px; font-size: 14px; margin: 16px 0 8px; }
.todo { background: #fff4ec; color: #7a3300; border-radius: 4px; padding: 0 4px; font-size: .92em; }
table { border-collapse: collapse; width: 100%; font-size: 14px; margin: 8px 0; }
th, td { text-align: left; border-bottom: 1px solid var(--line); padding: 8px 6px; vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.toc { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px 18px; font-size: 14px; }
.toc ol { margin: 6px 0; padding-left: 20px; columns: 2; column-gap: 24px; }
@media (max-width: 600px) { .toc ol { columns: 1; } h1 { font-size: 24px; } table { font-size: 13px; } }
footer { color: var(--muted); font-size: 13px; padding: 16px 0 40px; border-top: 1px solid var(--line); }
a { color: #c44d00; }