:root { --navy: #1c244b; --blue: #324a6d; --paper: #ffffff; --canvas: #f6f7fa; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--blue); background: var(--canvas); font-family: Arial, Helvetica, sans-serif; line-height: 1.65; }
a { color: var(--navy); }
a:hover { color: #e11d3f; }
.site-header { background: var(--paper); border-bottom: 1px solid #e4e7ef; }
.site-header__inner, main, .site-footer__inner { width: min(920px, calc(100% - 40px)); margin: 0 auto; }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; min-height: 86px; gap: 24px; }
.brand { color: var(--navy); font-size: 1.35rem; font-weight: 800; text-decoration: none; }
.back { font-size: .95rem; }
main { margin-top: 52px; margin-bottom: 52px; }
article { background: var(--paper); padding: clamp(28px, 6vw, 64px); border-radius: 4px; box-shadow: 0 8px 28px rgba(28, 36, 75, .07); }
h1, h2 { color: var(--navy); line-height: 1.25; }
h1 { margin: 0 0 8px; font-size: clamp(2rem, 5vw, 3rem); }
h2 { margin-top: 2.2rem; font-size: 1.25rem; }
p, li { font-size: 1rem; }
.updated { margin-top: 0; color: #65728a; }
.note { padding: 16px 18px; background: #f1f4f9; border-left: 4px solid var(--navy); }
.site-footer { padding: 28px 0; color: #65728a; text-align: center; font-size: .92rem; }
.site-footer a { margin: 0 7px; }
@media (max-width: 560px) { .site-header__inner { min-height: 70px; } .back { font-size: .85rem; } }