:root {
  --bg: #fbfaf7; --surface: #ffffff; --ink: #1d1b18; --muted: #6b665e; --line: #e8e3da;
  --brand: #e8590c; --brand-ink: #ffffff; --brand-soft: #fff1e6;
  --ok: #2b8a3e; --ok-soft: #ebfbee; --warn: #b7791f; --warn-soft: #fff8e1; --bad: #c92a2a; --bad-soft: #fff0f0;
  --shadow: 0 1px 2px rgba(29,27,24,.06), 0 8px 24px rgba(29,27,24,.06);
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161513; --surface: #1f1d1a; --ink: #f1ede6; --muted: #a8a196; --line: #34302b;
    --brand: #ff7a2e; --brand-ink: #1a0f06; --brand-soft: #2c1d12;
    --ok: #69db7c; --ok-soft: #16261a; --warn: #f2c14e; --warn-soft: #2a2414; --bad: #ff8787; --bad-soft: #2d1818;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.3);
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  overflow-x: hidden;
  background: var(--bg); color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }
header.top { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 750; font-size: 19px; letter-spacing: -.01em; color: var(--ink); text-decoration: none; }
.logo svg { width: 28px; height: 28px; }
.brandtxt { display: flex; flex-direction: column; line-height: 1.1; }
.bname { font-size: 21px; }
.bsub { font-size: 12px; font-weight: 550; color: var(--muted); letter-spacing: 0; }
nav.top a { color: var(--muted); text-decoration: none; font-size: 15px; margin-left: 18px; }
nav.top a:hover { color: var(--ink); }

.hero { padding: 56px 0 28px; text-align: center; }
.eyebrow { display: inline-block; background: var(--brand-soft); color: var(--brand); font-weight: 650; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; padding: 6px 12px; border-radius: 999px; }
h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.08; letter-spacing: -.025em; margin: 18px auto 14px; max-width: 14ch; }
.lead { color: var(--muted); font-size: 18px; max-width: 54ch; margin: 0 auto; }

form.check { margin: 34px auto 10px; max-width: 620px; display: flex; gap: 10px; background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 8px; box-shadow: var(--shadow); }
form.check input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink); font: inherit; font-size: 18px; padding: 12px 14px; outline: none; }
form.check input::placeholder { color: var(--muted); opacity: .8; }
form.check button { border: 0; background: var(--brand); color: var(--brand-ink); font: inherit; font-weight: 700; font-size: 17px; padding: 12px 22px; border-radius: 12px; cursor: pointer; white-space: nowrap; }
form.check button:hover { filter: brightness(1.05); }
form.check button:disabled { opacity: .6; cursor: progress; }
form.check:focus-within { border-color: var(--brand); }
.small { color: var(--muted); font-size: 14px; }
.hero .small { margin-top: 10px; }

#results { margin: 26px auto 0; max-width: 680px; }
.loading { text-align: center; color: var(--muted); padding: 26px 0; }
.spinner { width: 26px; height: 26px; border: 3px solid var(--line); border-top-color: var(--brand); border-radius: 50%; animation: spin .8s linear infinite; margin: 0 auto 12px; }
@keyframes spin { to { transform: rotate(360deg); } }
.summary { display: flex; align-items: center; gap: 14px; padding: 18px 20px; border-radius: var(--radius); margin-bottom: 12px; font-weight: 650; font-size: 18px; }
.summary.ok { background: var(--ok-soft); color: var(--ok); }
.summary.warn { background: var(--warn-soft); color: var(--warn); }
.summary.bad { background: var(--bad-soft); color: var(--bad); }
.summary .icon { flex: none; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--surface); }
.summary .icon svg { width: 20px; height: 20px; }
.summary .host { font-weight: 500; font-size: 15px; color: var(--muted); display: block; }
.finding { display: flex; gap: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 10px; box-shadow: var(--shadow); text-align: left; }
.finding .icon { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; }
.finding .icon svg { width: 18px; height: 18px; }
.finding.ok .icon { background: var(--ok-soft); color: var(--ok); }
.finding.warn .icon { background: var(--warn-soft); color: var(--warn); }
.finding.bad .icon { background: var(--bad-soft); color: var(--bad); }
.finding h3 { margin: 2px 0 4px; font-size: 17px; }
.finding p { margin: 0; color: var(--muted); overflow-wrap: anywhere; }
.next { background: var(--brand-soft); border-radius: var(--radius); padding: 18px 20px; margin-top: 14px; text-align: left; }
.next h3 { margin: 0 0 6px; font-size: 17px; }
.next p { margin: 0 0 8px; }
.next p:last-child { margin-bottom: 0; }
.error { background: var(--bad-soft); color: var(--bad); border-radius: var(--radius); padding: 14px 18px; text-align: center; }

section { padding: 56px 0 8px; }
h2 { font-size: 28px; letter-spacing: -.02em; margin: 0 0 18px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.step .n { width: 30px; height: 30px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 750; margin-bottom: 10px; }
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p, .card li { color: var(--muted); font-size: 15px; }
.card ul { margin: 0; padding-left: 18px; }
footer { border-top: 1px solid var(--line); margin-top: 64px; padding: 26px 0 40px; color: var(--muted); font-size: 14px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
footer a { color: var(--muted); }

@media (max-width: 680px) {
  .hero { padding-top: 28px; }
  form.check { flex-direction: column; }
  form.check button { width: 100%; }
  .steps, .cols { grid-template-columns: 1fr; }
  .summary { text-align: left; }
}

/* shared layout */
nav.top { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 18px; }
nav.top a { margin-left: 0; }
nav.top a.active { color: var(--ink); font-weight: 650; }
.page { padding: 40px 0 0; max-width: 720px; }
.page h1 { font-size: clamp(30px, 5vw, 42px); text-align: left; margin: 0 0 12px; max-width: none; }
.page .lead { margin: 0 0 8px; text-align: left; }
.page h2 { font-size: 21px; margin: 34px 0 8px; }
.page p, .page li { color: var(--muted); }
.page ul { padding-left: 20px; }
.page strong { color: var(--ink); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.contact-grid .card a { font-weight: 650; }
form.contact { display: grid; gap: 12px; margin-top: 10px; }
form.contact label { font-weight: 600; font-size: 15px; display: grid; gap: 6px; }
form.contact input, form.contact textarea { font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; }
form.contact textarea { min-height: 140px; resize: vertical; }
form.contact input:focus, form.contact textarea:focus { outline: 2px solid var(--brand); border-color: transparent; }
form.contact button { justify-self: start; border: 0; background: var(--brand); color: var(--brand-ink); font: inherit; font-weight: 700; padding: 12px 22px; border-radius: 12px; cursor: pointer; }
form.contact .hp { position: absolute; left: -5000px; }
.notice-ok { background: var(--ok-soft); color: var(--ok); border-radius: var(--radius); padding: 14px 18px; }
.notice-bad { background: var(--bad-soft); color: var(--bad); border-radius: var(--radius); padding: 14px 18px; }
footer.site { display: block; border-top: 1px solid var(--line); margin-top: 72px; padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer.site .row { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
footer.site nav a { color: var(--muted); text-decoration: none; margin-right: 16px; }
footer.site nav a:hover { color: var(--ink); }
footer.site .fine { margin-top: 14px; font-size: 13px; max-width: 70ch; }
@media (max-width: 680px) {
  header.top { flex-direction: column; align-items: flex-start; gap: 10px; }
  .contact-grid { grid-template-columns: 1fr; }
}
.bsub b { color: var(--brand); font-weight: 750; }