:root {
  --ink: #121723;
  --ink-soft: #566071;
  --paper: #f8f7f3;
  --surface: #ffffff;
  --line: #e4e5e8;
  --brand: #3d43a4;
  --brand-soft: #eef0ff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.62; }
a { color: var(--brand); }
a:hover { color: #272d83; }
.site-header { background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); }
.nav { width: min(1120px, calc(100% - 40px)); min-height: 72px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: var(--ink); font-size: 18px; font-weight: 800; letter-spacing: -.02em; text-decoration: none; }
.brand span { color: var(--brand); }
.nav a:not(.brand) { font-size: 14px; font-weight: 700; text-decoration: none; }
.hero { background: var(--ink); color: #fff; padding: 72px 0 64px; }
.wrap { width: min(860px, calc(100% - 40px)); margin: auto; }
.eyebrow { margin: 0 0 10px; color: #bfc3ff; font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
h1 { max-width: 760px; margin: 0; font-size: clamp(34px, 5vw, 56px); line-height: 1.08; letter-spacing: -.04em; }
.hero p:last-child { max-width: 660px; margin: 18px 0 0; color: #d5d8e4; }
main { padding: 50px 0 68px; }
.notice { margin: 0 0 28px; padding: 16px 18px; background: var(--brand-soft); border-left: 4px solid var(--brand); border-radius: 8px; color: #2b316f; font-size: 14px; }
.content { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: clamp(24px, 4vw, 44px); box-shadow: 0 12px 38px rgba(18,23,43,.05); }
.content > :first-child { margin-top: 0; }
h2 { margin: 38px 0 12px; font-size: 24px; line-height: 1.22; letter-spacing: -.02em; }
h3 { margin: 26px 0 8px; font-size: 18px; line-height: 1.3; }
p, li { font-size: 15px; }
ul { padding-left: 21px; }
li + li { margin-top: 8px; }
.meta { display: grid; grid-template-columns: minmax(140px, 190px) 1fr; gap: 10px 20px; margin: 24px 0; padding: 20px; background: var(--paper); border-radius: 10px; font-size: 14px; }
.meta dt { font-weight: 800; }
.meta dd { margin: 0; color: var(--ink-soft); }
.callout { padding: 18px; background: #f7fafc; border: 1px solid var(--line); border-radius: 10px; }
.site-footer { border-top: 1px solid var(--line); background: #fff; }
.footer { width: min(1120px, calc(100% - 40px)); margin: auto; padding: 28px 0 38px; display: flex; gap: 18px; align-items: center; justify-content: space-between; flex-wrap: wrap; color: var(--ink-soft); font-size: 13px; }
.footer nav { display: flex; flex-wrap: wrap; gap: 14px; }
.footer nav a { color: var(--ink-soft); }
@media (max-width: 600px) { .nav { width: min(100% - 28px, 1120px); min-height: 62px; } .wrap { width: min(100% - 28px, 860px); } .hero { padding: 54px 0 48px; } main { padding: 30px 0 42px; } .meta { grid-template-columns: 1fr; gap: 2px; } .meta dt:not(:first-child) { margin-top: 11px; } }