:root {
    color-scheme: light;
    --ink: #17202a;
    --muted: #5d6875;
    --line: #dce2e8;
    --blue: #1769aa;
    --blue-dark: #0d3f69;
    --surface: #ffffff;
    --wash: #f4f7fa;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background: var(--wash);
    line-height: 1.65;
}
a { color: var(--blue); }
.shell { width: min(1040px, calc(100% - 40px)); margin: 0 auto; }
header { background: var(--surface); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.brand { color: var(--ink); font-weight: 750; text-decoration: none; letter-spacing: -.02em; }
nav { display: flex; flex-wrap: wrap; gap: 18px; }
nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
nav a:hover, nav a[aria-current="page"] { color: var(--blue); }
main { padding: 72px 0 88px; }
.hero { max-width: 760px; padding: 48px; background: linear-gradient(135deg, #eaf4fc, #fff); border: 1px solid #cfe2f2; border-radius: 20px; }
.eyebrow { color: var(--blue); font-weight: 750; text-transform: uppercase; letter-spacing: .1em; font-size: .78rem; }
h1 { margin: 10px 0 18px; max-width: 760px; font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.08; letter-spacing: -.045em; }
h2 { margin-top: 2.2em; line-height: 1.2; }
.lead { color: var(--muted); font-size: 1.2rem; max-width: 680px; }
.button { display: inline-block; margin-top: 16px; padding: 11px 18px; border-radius: 8px; background: var(--blue-dark); color: #fff; text-decoration: none; font-weight: 700; }
.content { max-width: 780px; padding: 42px 48px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; }
.updated { color: var(--muted); font-size: .9rem; }
footer { border-top: 1px solid var(--line); padding: 28px 0 44px; color: var(--muted); font-size: .9rem; }
@media (max-width: 640px) { .shell { width: min(100% - 28px, 1040px); } .nav { align-items: flex-start; flex-direction: column; padding: 18px 0; } main { padding: 36px 0 56px; } .hero, .content { padding: 28px 24px; } }