:root {
    --ink: #1a1a1a;
    --muted: #616161;
    --paper: #f8f9fa;
    --surface: #ffffff;
    --line: #e0e0e0;
    --accent: #0066b8;
    --accent-dark: #004a87;
    --warm-accent: #f25022;
    --danger: #a52a2a;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: "Segoe UI Variable", "Segoe UI", Inter, sans-serif;
    line-height: 1.65;
}
a { color: var(--accent-dark); }
.site-header {
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.96);
}
.site-header-inner, .page-shell {
    width: min(920px, calc(100% - 40px));
    margin: 0 auto;
}
.site-header-inner {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.brand { color: var(--ink); font-weight: 700; text-decoration: none; }
.header-links { display: flex; gap: 18px; align-items: center; }
.header-links a { font-size: 0.92rem; text-decoration: none; }
.page-shell { padding: 54px 0 72px; }
.eyebrow {
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
h1, h2 { font-family: inherit; line-height: 1.2; letter-spacing: 0; }
h1 { max-width: 720px; margin: 8px 0 14px; font-size: clamp(2.1rem, 7vw, 3.8rem); }
h2 { margin: 36px 0 8px; font-size: 1.45rem; }
.lede { max-width: 720px; color: var(--muted); font-size: 1.08rem; }
.meta, .note { color: var(--muted); font-size: 0.9rem; }
.document, .panel {
    margin-top: 36px;
    padding: clamp(24px, 5vw, 46px);
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--surface);
}
ul { padding-left: 22px; }
.notice {
    margin: 24px 0;
    padding: 16px 18px;
    border-left: 4px solid var(--accent);
    background: #eaf4fb;
}
.site-footer { padding: 28px 20px; border-top: 1px solid var(--line); text-align: center; color: var(--muted); }
.site-footer a { margin: 0 8px; }

@media (max-width: 620px) {
    .site-header-inner { align-items: flex-start; flex-direction: column; padding: 15px 0; }
    .header-links { flex-wrap: wrap; gap: 12px; }
    .page-shell { padding-top: 36px; }
}