:root { font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #171717; background: #f7f7f5; }
* { box-sizing: border-box; }
body { margin: 0; }
main { max-width: 920px; margin: 0 auto; padding: 72px 24px 96px; }
.hero { background: #fff; border: 1px solid #e6e6e2; border-radius: 20px; padding: 32px; box-shadow: 0 12px 40px rgba(0,0,0,.05); }
.eyebrow { font-size: 12px; letter-spacing: .12em; font-weight: 800; color: #666; }
h1 { font-size: clamp(34px, 7vw, 58px); line-height: 1; margin: 12px 0 16px; letter-spacing: -.04em; }
h2 { margin-top: 0; }
p { line-height: 1.6; color: #555; }
form { margin-top: 28px; }
label { display: block; font-weight: 700; margin-bottom: 8px; }
.input-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
input { width: 100%; padding: 15px 16px; border: 1px solid #cfcfca; border-radius: 11px; font: inherit; background: #fff; }
button { border: 0; border-radius: 11px; padding: 0 20px; min-height: 46px; font: inherit; font-weight: 800; background: #171717; color: #fff; cursor: pointer; }
button.secondary { background: #ededeb; color: #222; }
button.danger { background: #8a1f1f; }
button:disabled { opacity: .45; cursor: not-allowed; }
.hint { font-size: 13px; margin: 8px 0 0; }
.status { min-height: 28px; margin: 22px 4px 0; font-weight: 700; }
.results { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; margin-top: 16px; }
.card, .monitor-card { background: #fff; border: 1px solid #e6e6e2; border-radius: 16px; padding: 22px; }
.card h2 { margin: 0; font-size: 21px; }
.badge { display: inline-block; margin-top: 10px; padding: 5px 9px; border-radius: 999px; font-size: 12px; font-weight: 800; background: #eee; }
.badge.ok { background: #e8f7ed; color: #176b35; }
.badge.bad { background: #fdecec; color: #9b2525; }
dl { display: grid; grid-template-columns: auto 1fr; gap: 7px 12px; font-size: 14px; margin: 18px 0; }
dt { color: #777; } dd { margin: 0; overflow-wrap: anywhere; }
ul { padding-left: 20px; margin: 10px 0 0; }
.error-list { color: #8a1f1f; }
.warning-list { color: #735d0b; }
.association { border-top: 1px solid #eee; padding-top: 12px; margin-top: 12px; font-size: 13px; }
.association code, .dns-record code { overflow-wrap: anywhere; }
.monitor-card { margin-top: 16px; }
.monitor-grid { display: grid; gap: 12px; }
.monitor-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.dns-record { padding: 14px; background: #f6f6f3; border-radius: 10px; margin: 10px 0; }
.dns-record strong { display: block; margin-bottom: 5px; }
.history { margin-top: 18px; border-top: 1px solid #eee; padding-top: 14px; }
.history-row { padding: 10px 0; border-bottom: 1px solid #eee; font-size: 13px; }
.history-row:last-child { border-bottom: 0; }
.muted { color: #777; font-size: 13px; }
.hidden { display: none; }
@media (max-width: 720px) { main { padding: 28px 14px 60px; } .hero { padding: 24px 18px; } .input-row { grid-template-columns: 1fr; } .results { grid-template-columns: 1fr; } }

footer { margin-top: 28px; padding: 18px 4px; color: #666; font-size: 13px; line-height: 1.6; }
footer a { color: inherit; }
footer .footer-tools { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-bottom: 8px; }
.legal-page { max-width: 760px; margin: 0 auto; padding: 56px 24px 96px; }
.legal-page h1 { font-size: 38px; }
.legal-page h2 { margin-top: 32px; }
.legal-page a { color: #171717; }

.seo-intro { margin-top: 28px; background: #fff; border: 1px solid #e6e6e2; border-radius: 16px; padding: 26px; }
.seo-intro h2 { margin-top: 28px; }
.seo-intro h2:first-child { margin-top: 0; }
.seo-intro code { overflow-wrap: anywhere; }
.seo-intro a, .tool-links a { color: #171717; }
.tool-links { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 24px 4px 0; font-size: 14px; }