:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; color: #101a2a; background: #f5f6f8; font-size: 16px; line-height: 1.7; }
header { background: #071526; color: #fff; }
.topbar { width: min(100% - 32px, 880px); margin: 0 auto; padding: 22px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; font-weight: 800; }
.mark { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 11px; background: #ff7a17; font-size: 18px; }
header a.link { color: #d8e0ea; font-size: .9rem; }
main { width: min(100% - 32px, 880px); margin: 36px auto; padding: clamp(28px, 6vw, 56px); background: #fff; border: 1px solid #e2e6eb; border-radius: 24px; box-shadow: 0 18px 60px rgba(7,21,38,.08); }
h1 { margin: 0 0 10px; font-size: clamp(2rem, 6vw, 3rem); line-height: 1.1; letter-spacing: -.04em; }
h2 { margin: 34px 0 10px; font-size: 1.3rem; line-height: 1.3; }
p, ul, ol { color: #4f5c6c; }
ul, ol { padding-left: 22px; }
.meta { margin: 0 0 30px; color: #7b8490; font-size: .9rem; }
.notice { margin: 28px 0; padding: 20px; border-left: 4px solid #ff7a17; border-radius: 8px; background: #fff7f0; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 13px 20px; border-radius: 13px; background: #ff7a17; color: #fff; text-decoration: none; font-weight: 750; }
a { color: #0c62b6; }
footer { width: min(100% - 32px, 880px); margin: 0 auto; padding: 0 0 36px; color: #7b8490; font-size: .85rem; text-align: center; }
@media (max-width: 560px) { .topbar { align-items: flex-start; } header a.link { display: none; } main { margin-top: 20px; padding: 26px 22px; border-radius: 18px; } }