:root { color: #20211f; background: #f8f6f2; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; }
main { width: min(760px, calc(100% - 32px)); margin: 0 auto; padding: 72px 0 40px; }
.hero { text-align: center; padding: 48px 28px; }
.mark { width: 72px; height: 72px; }
.eyebrow { color: #b62f50; font-size: 13px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 12px 0; font-family: Georgia, serif; font-size: clamp(42px, 8vw, 68px); line-height: 1; }
.lede { margin: 20px auto 30px; max-width: 590px; color: #5b5d59; font-size: 19px; line-height: 1.55; }
.button { display: inline-block; border-radius: 10px; background: #bd3455; color: white; padding: 15px 22px; font-weight: 750; text-decoration: none; box-shadow: 0 8px 22px rgb(189 52 85 / 22%); }
.button:hover { background: #a92d4b; }
.button-disabled { background: #777a75; box-shadow: none; cursor: not-allowed; }
.button-disabled:hover { background: #777a75; }
.button:focus-visible, .links a:focus-visible { outline: 3px solid #20211f; outline-offset: 4px; }
.facts { margin-top: 18px; color: #777a75; font-size: 14px; }
.panel { margin-top: 22px; border: 1px solid #dedbd5; border-radius: 16px; background: white; padding: 28px; box-shadow: 0 10px 30px rgb(32 33 31 / 5%); }
h2 { margin-top: 0; font-family: Georgia, serif; font-size: 27px; }
p, li { line-height: 1.6; }
.links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.links a { border: 1px solid #c9c6c0; border-radius: 9px; color: #20211f; padding: 11px 14px; font-weight: 700; text-decoration: none; }
.links a:hover { border-color: #bd3455; color: #a92d4b; }
footer { padding: 28px 16px 42px; color: #777a75; text-align: center; font-size: 13px; }
.back { display: inline-block; margin-bottom: 18px; border: 1px solid #c9c6c0; border-radius: 9px; color: #20211f; padding: 10px 13px; font-weight: 700; text-decoration: none; }
.back:hover { border-color: #bd3455; color: #a92d4b; }
.guide h1 { font-size: clamp(38px, 7vw, 58px); }
.guide h2 { margin-top: 34px; }
.warning { border-left: 4px solid #bd3455; background: #fcecf0; padding: 14px 16px; }
.checksum code { overflow-wrap: anywhere; word-break: break-word; }
@media (max-width: 520px) { main { padding-top: 30px; } .hero { padding: 34px 8px; } .panel { padding: 22px; } .button { width: 100%; } }