/* DNSconfig marketing landing page. Terminal/engineering identity.
   Self-contained; light + dark via tokens (system fonts only — no webfont CDN). */
:root {
  --bg: #fbfcfd; --bg-alt: #eef2f7; --ink: #0b121c; --muted: #55616f;
  --border: #dce3ec; --card: #ffffff;
  --accent: #1d4ed8; --accent-d: #1e3a8a; --on-accent: #ffffff;
  --ok: #15803d; --ok-bg: #e7f6ec; --warn: #b45309; --warn-bg: #fbf1e3;
  --err: #be123c; --err-bg: #fcecef;
  --shadow: 0 1px 2px rgba(11,18,28,.05), 0 12px 32px rgba(11,18,28,.07);
  --mono: ui-monospace, "SF Mono", SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --wrap: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #080c12; --bg-alt: #0d131c; --ink: #e8eef6; --muted: #93a1b3;
    --border: #1b2431; --card: #0f1621;
    --accent: #60a5fa; --accent-d: #93c5fd; --on-accent: #06101f;
    --ok: #4ade80; --ok-bg: #0f2417; --warn: #fbbf24; --warn-bg: #2a1f0a;
    --err: #fb7185; --err-bg: #2a1119;
    --shadow: 0 1px 2px rgba(0,0,0,.5), 0 14px 40px rgba(0,0,0,.45);
  }
}
:root[data-theme="dark"] {
  --bg: #080c12; --bg-alt: #0d131c; --ink: #e8eef6; --muted: #93a1b3;
  --border: #1b2431; --card: #0f1621;
  --accent: #60a5fa; --accent-d: #93c5fd; --on-accent: #06101f;
  --ok: #4ade80; --ok-bg: #0f2417; --warn: #fbbf24; --warn-bg: #2a1f0a;
  --err: #fb7185; --err-bg: #2a1119;
  --shadow: 0 1px 2px rgba(0,0,0,.5), 0 14px 40px rgba(0,0,0,.45);
}
:root[data-theme="light"] {
  --bg: #fbfcfd; --bg-alt: #eef2f7; --ink: #0b121c; --muted: #55616f;
  --border: #dce3ec; --card: #ffffff;
  --accent: #1d4ed8; --accent-d: #1e3a8a; --on-accent: #ffffff;
  --ok: #15803d; --ok-bg: #e7f6ec; --warn: #b45309; --warn-bg: #fbf1e3;
  --err: #be123c; --err-bg: #fcecef;
  --shadow: 0 1px 2px rgba(11,18,28,.05), 0 12px 32px rgba(11,18,28,.07);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.5rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { text-wrap: balance; letter-spacing: -.02em; }
code, .mono { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: .5rem; background: var(--accent); color: var(--on-accent); padding: .5rem 1rem; border-radius: 8px; z-index: 100; }

.eyebrow { font-family: var(--mono); font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); font-weight: 600; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--mono); font-weight: 600;
  font-size: .9rem; padding: .62rem 1.15rem; border-radius: 8px; border: 1px solid transparent;
  cursor: pointer; transition: background .15s, border-color .15s, transform .05s; }
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { background: var(--accent-d); }
.btn.ghost { border-color: var(--border); color: var(--ink); background: transparent; }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn.lg { padding: .85rem 1.5rem; font-size: 1rem; }
.btn.block { display: flex; justify-content: center; width: 100%; }
.btn.sm { padding: .45rem .9rem; font-size: .82rem; }

/* nav */
.nav { position: sticky; top: 0; z-index: 40; background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px) saturate(1.3); border-bottom: 1px solid var(--border); }
.nav-in { display: flex; align-items: center; gap: 1.5rem; height: 62px; }
.brand { display: inline-flex; align-items: center; gap: .55rem; font-family: var(--mono); font-weight: 700; color: var(--ink); font-size: 1.05rem; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px var(--ok-bg); }
.nav-links { display: flex; gap: 1.4rem; margin-left: 1rem; }
.nav-links a { color: var(--muted); font-size: .92rem; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-cta { margin-left: auto; display: flex; gap: .6rem; }
@media (max-width: 800px) { .nav-links { display: none; } }

/* hero */
.hero { padding: 4.5rem 0 3rem; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 3rem; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 2.25rem; } }
.hero h1 { font-family: var(--mono); font-size: clamp(2rem, 4.5vw, 3.1rem); line-height: 1.08; margin: .9rem 0 1rem; font-weight: 700; }
.hero h1 .hl { color: var(--ok); }
.lede { font-size: 1.15rem; color: var(--muted); max-width: 34rem; margin: 0 0 1.75rem; }
.hero-cta { display: flex; gap: .7rem; flex-wrap: wrap; }
.hero-meta { margin-top: 1.4rem; font-family: var(--mono); font-size: .8rem; color: var(--muted); display: flex; gap: 1.25rem; flex-wrap: wrap; }
.hero-meta span { display: inline-flex; align-items: center; gap: .4rem; }

/* verify card */
.vcard { background: var(--card); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; font-family: var(--mono); }
.vhead { display: flex; align-items: center; gap: .5rem; padding: .7rem .9rem; border-bottom: 1px solid var(--border); background: var(--bg-alt); font-size: .8rem; color: var(--muted); }
.vhead .lights { display: inline-flex; gap: .35rem; margin-right: .4rem; }
.vhead .lights i { width: 10px; height: 10px; border-radius: 50%; background: var(--border); display: block; }
.vbody { padding: .85rem .9rem; display: flex; flex-direction: column; gap: .55rem; }
.rec { border: 1px solid var(--border); border-radius: 9px; padding: .6rem .7rem; }
.rec.pass { border-left: 3px solid var(--ok); }
.rec.fail { border-left: 3px solid var(--err); }
.rec.warn { border-left: 3px solid var(--warn); }
.rec-top { display: flex; align-items: center; gap: .5rem; font-size: .82rem; }
.rec-type { color: var(--muted); }
.rec-host { font-weight: 600; color: var(--ink); }
.pill { margin-left: auto; font-size: .68rem; padding: .1rem .5rem; border-radius: 999px; display: inline-flex; align-items: center; gap: .3rem; }
.pill.ok { color: var(--ok); background: var(--ok-bg); }
.pill.bad { color: var(--err); background: var(--err-bg); }
.pill.warn { color: var(--warn); background: var(--warn-bg); }
.cmp { display: flex; gap: .5rem; font-size: .76rem; margin-top: .4rem; }
.cmp .k { color: var(--muted); flex: 0 0 4.2rem; }
.cmp .exp { color: var(--ok); }
.cmp .cur { color: var(--err); }
.rec .hint { margin: .45rem 0 0; font-family: var(--sans); font-size: .76rem; color: var(--muted); }
.scanline { height: 3px; border-radius: 2px; background: linear-gradient(90deg, transparent, var(--accent), transparent); background-size: 40% 100%; background-repeat: no-repeat; animation: scan 1.6s ease-in-out infinite; }
@keyframes scan { 0% { background-position: -40% 0; } 100% { background-position: 140% 0; } }
@media (prefers-reduced-motion: reduce) { .scanline { animation: none; background-position: 50% 0; } }

/* strip */
.strip { border-block: 1px solid var(--border); background: var(--bg-alt); }
.strip-in { display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; padding: 1.1rem 0; align-items: center; font-family: var(--mono); font-size: .82rem; color: var(--muted); justify-content: center; }
.strip-in b { color: var(--ink); font-weight: 600; }

/* sections */
section.blk { padding: 4.5rem 0; }
.head { max-width: 40rem; margin: 0 auto 2.75rem; text-align: center; }
.head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: .6rem 0 .6rem; }
.head p { color: var(--muted); font-size: 1.05rem; margin: 0; }
.alt { background: var(--bg-alt); border-block: 1px solid var(--border); }

/* features */
.feat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
@media (max-width: 880px) { .feat { grid-template-columns: 1fr; } }
.fcard { background: var(--card); border: 1px solid var(--border); border-radius: 13px; padding: 1.4rem; }
.fcard .ic { width: 34px; height: 34px; color: var(--accent); }
.fcard h3 { font-size: 1.05rem; margin: .8rem 0 .4rem; }
.fcard p { color: var(--muted); margin: 0; font-size: .95rem; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 880px) { .steps { grid-template-columns: 1fr; } }
.step .n { font-family: var(--mono); font-size: .8rem; color: var(--accent); font-weight: 700; border: 1px solid var(--border); border-radius: 7px; padding: .15rem .5rem; }
.step h3 { font-size: 1.05rem; margin: .7rem 0 .35rem; }
.step p { color: var(--muted); margin: 0; font-size: .95rem; }

/* pricing */
.price { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; align-items: start; }
@media (max-width: 880px) { .price { grid-template-columns: 1fr; } }
.pcard { background: var(--card); border: 1px solid var(--border); border-radius: 13px; padding: 1.5rem; display: flex; flex-direction: column; position: relative; }
.pcard.feat2 { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.pcard .tag { position: absolute; top: -.7rem; left: 1.3rem; font-family: var(--mono); font-size: .68rem; background: var(--accent); color: var(--on-accent); padding: .15rem .55rem; border-radius: 999px; letter-spacing: .04em; }
.pcard h3 { font-family: var(--mono); margin: 0 0 .3rem; }
.amt { font-size: 1.9rem; font-weight: 800; font-family: var(--mono); margin: .2rem 0 1rem; letter-spacing: -.02em; }
.amt .per { font-size: .85rem; color: var(--muted); font-weight: 500; font-family: var(--sans); }
.pcard ul { list-style: none; padding: 0; margin: 0 0 1.2rem; flex: 1; }
.pcard li { padding: .35rem 0 .35rem 1.5rem; position: relative; color: var(--muted); font-size: .93rem; }
.pcard li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 700; }

/* faq */
.faq { max-width: 46rem; margin: 0 auto; }
.faq details { border: 1px solid var(--border); border-radius: 10px; padding: .3rem 1rem; margin-bottom: .7rem; background: var(--card); }
.faq summary { cursor: pointer; font-weight: 600; padding: .55rem 0; list-style: none; display: flex; align-items: center; }
.faq summary::after { content: "+"; margin-left: auto; color: var(--muted); font-family: var(--mono); }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--muted); margin: 0 0 .6rem; }

/* final cta */
.final { text-align: center; }
.final h2 { font-family: var(--mono); font-size: clamp(1.5rem, 3vw, 2.2rem); max-width: 32rem; margin: 0 auto 1.5rem; }

/* footer */
footer { border-top: 1px solid var(--border); background: var(--bg-alt); padding: 2rem 0; }
.foot-in { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }
.foot-in nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.foot-in nav a { color: var(--muted); font-size: .9rem; }
.copy { margin-left: auto; color: var(--muted); font-family: var(--mono); font-size: .82rem; }

/* consent banner */
.consent { position: fixed; bottom: 1rem; left: 1rem; right: 1rem; max-width: 30rem; margin: 0 auto;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow);
  padding: 1rem 1.1rem; z-index: 80; display: flex; flex-direction: column; gap: .75rem; }
.consent p { margin: 0; font-size: .9rem; color: var(--muted); }
.consent-actions { display: flex; gap: .6rem; justify-content: flex-end; }
.consent[hidden] { display: none; }