:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #526176;
  --line: #d8e0ea;
  --surface: #ffffff;
  --soft: #f4f7fb;
  --accent: #075985;
  --accent-strong: #0c4a6e;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: var(--accent); text-decoration-thickness: 0.08em; text-underline-offset: 0.15em; }
a:hover, a:focus-visible { color: var(--accent-strong); }

.site-header, .site-footer {
  background: #0f172a;
  color: #e2e8f0;
}

.site-header-inner, .site-footer-inner, .page-shell {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}
.site-header-inner { padding: var(--space-2) 0; }
.brand { color: #f8fafc; text-decoration: none; font-weight: 800; letter-spacing: .02em; font-size: 1.25rem; }
.brand span { color: #7dd3fc; }
.site-nav { display: flex; flex-wrap: wrap; gap: .35rem .8rem; margin-top: .7rem; }
.site-nav a { color: #cbd5e1; padding: .25rem 0; }
.site-nav a:hover, .site-nav a:focus-visible { color: #fff; }
.language-selector { display: flex; gap: .45rem; align-items: center; margin-left: auto; }
.language-selector a { color: #cde7f6; text-decoration: none; padding: .25rem .4rem; border-radius: .3rem; }
.language-selector a[aria-current="true"] { background: rgba(103,232,249,.18); color: #fff; }

.site-primary-nav ul { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-2); margin: 0; padding: 0; list-style: none; }
.site-primary-nav a { color: #cde7f6; padding: var(--space-1) 0; text-decoration: none; }
.site-primary-nav a:hover, .site-primary-nav a:focus-visible, .site-primary-nav a[aria-current="page"] { color: #fff; }
.section-stack { display: grid; gap: var(--space-4); }
.panel-stack { display: grid; gap: var(--space-3); }
.panel-stack > * { min-width: 0; }
.card-grid { display: grid; gap: var(--space-2); }

.page-shell { padding: 2rem 0 3rem; }
.hero, .panel, .tool-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: .75rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, .06);
}
.hero { padding: clamp(1.25rem, 3vw, 2.5rem); margin-bottom: 1rem; }
.hero h1 { margin: 0 0 .35rem; font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.1; }
.hero p { max-width: 70ch; color: var(--muted); margin: .5rem 0 0; }
.panel { padding: 1rem; margin: 1rem 0; min-width: 0; overflow-wrap: anywhere; }
.result { white-space: pre-wrap; overflow-wrap: anywhere; }
.diagnostic-conclusions { margin: 0; }
.diagnostic-box { margin: 0 0 1rem; padding: 1rem 1.1rem; border: 2px solid var(--accent); border-radius: .75rem; background: linear-gradient(145deg, rgba(11,41,73,.96), rgba(6,19,38,.98)); }
.diagnostic-box--conclusions[data-status="FAIL"],.diagnostic-box--conclusions[data-status="WARNING"] { border-color: #fbbf24; }
.diagnostic-box h2,.diagnostic-box h3 { margin-top: 0; }
.diagnostic-box ul { margin: .35rem 0 1rem; padding-inline-start: 1.35rem; }
.diagnostic-box .diagnostic-meta { color: var(--muted); }
.diagnostic-box .diagnostic-finding { margin: var(--space-2) 0; padding: .7rem; border-left: 3px solid var(--accent); background: rgba(6,19,38,.62); }
.diagnostic-finding-kind { margin: .2rem 0 .55rem; color: var(--muted); font-size: .92em; }
.diagnostic-finding h5 { margin: .8rem 0 .25rem; }
.diagnostic-evidence-list,.diagnostic-next-list { margin-top: .2rem; overflow-wrap: anywhere; }
.diagnostic-blocked { margin: .75rem 0; padding: .65rem .75rem; border-left: 3px solid #94a3b8; background: rgba(148,163,184,.09); }
.diagnostic-blocked-item + .diagnostic-blocked-item { margin-top: .65rem; }
.diagnostic-blocked-item p { margin: .3rem 0 0; color: var(--muted); }
.diagnostic-blocked-reference,.diagnostic-graph-note { color: var(--muted); font-size: .92em; }
.diagnostic-findings,.diagnostic-incomplete { margin-top: 1rem; }
.diagnostic-incomplete { padding-top: .85rem; border-top: 1px solid rgba(148,163,184,.35); }
.diagnostic-incomplete-note,.diagnostic-empty { color: var(--muted); }
.diagnostic-incomplete-list { list-style: none; padding-inline-start: 0; }
.diagnostic-incomplete-item { margin: var(--space-2) 0; padding: .65rem .75rem; border-left: 3px solid #94a3b8; background: rgba(148,163,184,.09); }
.diagnostic-incomplete-item strong { display: inline-block; margin-inline-end: .5rem; }
.diagnostic-incomplete-state { color: var(--muted); font-size: .9em; }
.diagnostic-incomplete-item p { margin: .3rem 0 0; color: var(--muted); }
.diagnostic-checks { margin-top: 1rem; padding-top: .85rem; border-top: 1px solid rgba(148,163,184,.35); }
.diagnostic-box--checks .diagnostic-checks { margin-top: 0; padding-top: 0; border-top: 0; }
.diagnostic-check-completeness { color: var(--muted); font-size: .92em; }
.diagnostic-check { margin: 1rem 0; border: 1px solid rgba(148,163,184,.35); border-radius: .4rem; background: rgba(6,19,38,.45); }
.diagnostic-check summary { display: flex; justify-content: space-between; gap: 1rem; padding: .65rem .75rem; cursor: pointer; font-weight: 650; }
.diagnostic-check summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.diagnostic-check-name { overflow-wrap: anywhere; }
.diagnostic-check-state { flex: 0 0 auto; color: var(--muted); font-variant-numeric: tabular-nums; }
.diagnostic-check-status-fail,.diagnostic-check-status-blocked,.diagnostic-check-status-unavailable,.diagnostic-check-status-indeterminate,.diagnostic-check-status-not_tested { border-color: #fbbf24; }
.diagnostic-check-details { padding: 0 .75rem .75rem; color: var(--muted); overflow-wrap: anywhere; }
.diagnostic-check-details h4 { margin: .75rem 0 .25rem; color: var(--text); }
.diagnostic-check-details p { margin: .35rem 0; }
.diagnostic-overview { margin-bottom: 1rem; padding: .6rem .85rem; background: rgba(6,19,38,.35); border-radius: .4rem; border-left: 3px solid var(--accent); }
.diagnostic-infrastructure { overflow: hidden; }
.infra-card { min-width: 0; }
.infra-card-target { margin: 0 0 1.25rem; font-size: 1.45rem; font-weight: 700; overflow-wrap: anywhere; }
.infra-card-hero, .infra-card-meta, .infra-card-services { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 1.25rem; margin: 0; }
.infra-card-field { min-width: 0; }
.infra-card-label { font-size: .76rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--accent); margin-bottom: .4rem; }
.infra-card-value { margin: 0; overflow-wrap: anywhere; font-weight: 600; }
.infra-card-provider .infra-card-value { font-size: 1.8rem; line-height: 1.25; }
.infra-card-caption { font-size: .82rem; color: var(--muted); margin: .45rem 0 0; overflow-wrap: anywhere; }
.infra-card-location { border-left: 1px solid var(--line); padding-left: 1.25rem; }
.infra-card-map-link { display: block; margin-top: .65rem; font-size: .85rem; overflow-wrap: anywhere; }
.infra-card-meta { padding: 1.25rem 0; margin-top: 1.25rem; border-top: 1px solid var(--line); }
.infra-card-section-title { margin: 0 0 .75rem; font-size: 1rem; }
.infra-card-address-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
.infra-card-address-family { padding: 1rem; border: 1px solid var(--line); border-radius: .65rem; min-width: 0; }
.infra-card-badge { display: inline-block; padding: .12rem .5rem; border-radius: .3rem; background: var(--accent); color: var(--surface); font-size: .75rem; font-weight: 700; }
.infra-card-address { margin-top: .6rem; }
.infra-card-ip { font-size: .94rem; font-weight: 600; overflow-wrap: anywhere; white-space: normal; }
.infra-card-empty { margin: .6rem 0 0; font-size: .88rem; color: var(--muted); }
.infra-card-services { padding-top: 1.25rem; margin-top: 1.25rem; border-top: 1px solid var(--line); }
.infra-card-line + .infra-card-line { margin-top: .45rem; }
@media (max-width: 700px) {
  .diagnostic-infrastructure > h2 { font-size: 1.1rem; line-height: 1.35; }
  .infra-card-hero, .infra-card-meta, .infra-card-services, .infra-card-address-grid { grid-template-columns: minmax(0, 1fr); }
  .infra-card-location { border-left: 0; border-top: 1px solid var(--line); padding: 1rem 0 0; }
  .infra-card-provider .infra-card-value { font-size: 1.5rem; }
}
.diagnostic-overview-meta { margin: 0 0 .3rem; color: var(--muted); font-size: .9em; }
.diagnostic-overview-lead { margin: 0; font-weight: 600; }
.diagnostic-overview-next { margin-left: .5rem; font-weight: 400; font-size: .9em; }
.diagnostic-action-detail { margin: .6rem 0; border: 1px solid rgba(148,163,184,.2); border-radius: .35rem; background: rgba(6,19,38,.3); }
.diagnostic-action-detail summary { padding: .4rem .65rem; cursor: pointer; font-size: .92em; font-weight: 600; color: var(--muted); }
.diagnostic-action-detail summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.diagnostic-action-body { padding: .35rem .65rem .55rem; }
.diagnostic-action-body p { margin: .25rem 0; color: var(--muted); font-size: .93em; }
.diagnostic-action-link { display: inline-block; margin-top: .45rem; padding: .3rem .75rem; background: var(--accent); color: #fff !important; border-radius: .35rem; text-decoration: none; font-size: .88em; font-weight: 600; }
.diagnostic-action-link:hover,.diagnostic-action-link:focus-visible { background: var(--accent-strong); }
.diagnostic-download-btn,.diagnostic-snapshot-btn { margin-top: .5rem; margin-right: .4rem; padding: .4rem .9rem; border: 1px solid rgba(148,163,184,.45); border-radius: .4rem; background: transparent; color: var(--accent); cursor: pointer; font-size: .9rem; }
.diagnostic-download-btn:hover,.diagnostic-download-btn:focus-visible,.diagnostic-snapshot-btn:hover,.diagnostic-snapshot-btn:focus-visible { background: rgba(7,89,133,.08); border-color: var(--accent); }
.snapshot-panel { margin-top: var(--space-2); }
.snapshot-panel-note { color: var(--muted); font-size: .9em; margin: 0 0 .75rem; }
.snapshot-row { display: flex; align-items: center; gap: var(--space-1); padding: .5rem 0; border-bottom: 1px solid var(--line); }
.snapshot-row:last-child { border-bottom: 0; }
.snapshot-row-info { flex: 1; font-size: .88em; color: var(--ink); overflow-wrap: anywhere; }
.snapshot-delete-btn,.snapshot-compare-btn { padding: .3rem .6rem; border: 1px solid rgba(148,163,184,.4); border-radius: .3rem; background: transparent; cursor: pointer; font-size: .82rem; white-space: nowrap; }
.snapshot-delete-btn { color: var(--muted); }
.snapshot-compare-btn { color: var(--accent); }
.snapshot-comparison { margin-top: var(--space-2); padding: .75rem; border: 1px solid var(--line); border-radius: .5rem; background: var(--soft); }
.snapshot-comparison h4 { margin: .75rem 0 .35rem; }
.snapshot-comparison-meta { color: var(--muted); font-size: .88em; margin: 0 0 .5rem; }
.snapshot-comparison-note { color: var(--muted); font-size: .9em; margin: .35rem 0; }
.snapshot-comparison-error { color: #dc2626; }
.snapshot-comparison-list { list-style: none; padding: 0; margin: .35rem 0; }
.snapshot-comparison-item { display: flex; align-items: baseline; gap: .4rem; padding: .25rem 0; font-size: .9em; }
.snapshot-comparison-badge { display: inline-block; padding: .1rem .4rem; border-radius: .25rem; font-size: .78rem; font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.snapshot-badge-new { background: rgba(234,179,8,.18); color: #854d0e; }
.snapshot-badge-resolved { background: rgba(34,197,94,.15); color: #166534; }
.snapshot-badge-status-changed,.snapshot-badge-evidence-changed { background: rgba(249,115,22,.15); color: #9a3412; }
.snapshot-badge-unchanged { background: rgba(148,163,184,.15); color: var(--muted); }
.snapshot-badge-inconclusive { background: rgba(148,163,184,.12); color: var(--muted); }
.snapshot-comparison-rule { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .85em; }
.snapshot-comparison-detail { color: var(--muted); font-size: .85em; }
.result-context { color: var(--muted); margin: 0 0 .75rem; overflow-wrap: anywhere; }
.result-check-json {
  max-width: 100%;
  max-height: min(60vh, 32rem);
  margin: .5rem 0 0;
  padding: .75rem .85rem;
  overflow-x: hidden;
  overflow-y: auto;
  border-radius: .5rem;
  background: #020b18;
  color: #d9faff;
  font: .85rem/1.6 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  tab-size: 2;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  scrollbar-color: #52738d #061326;
}
.result-check-json:focus-visible { outline-offset: -3px; }
.result-json {
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid rgba(103, 232, 249, .42);
  border-radius: .75rem;
  background: linear-gradient(145deg, rgba(11, 41, 73, .78), rgba(6, 19, 38, .96));
  box-shadow: 0 .6rem 1.6rem rgba(0, 0, 0, .18);
}
.result-copy + .result-json { margin-top: .5rem; }
.result-json summary {
  display: flex;
  min-height: 3rem;
  align-items: center;
  gap: .6rem;
  padding: .75rem 1rem;
  color: var(--ink);
  cursor: pointer;
  font-weight: 750;
  list-style: none;
}
.result-json summary::-webkit-details-marker { display: none; }
.result-json summary::before {
  content: "＋";
  display: inline-grid;
  width: 1.5rem;
  height: 1.5rem;
  flex: 0 0 1.5rem;
  place-items: center;
  border: 1px solid rgba(103, 232, 249, .5);
  border-radius: .4rem;
  color: #a5f3fc;
  font-size: 1rem;
  line-height: 1;
}
.result-json[open] summary { border-bottom: 1px solid rgba(103, 232, 249, .22); }
.result-json[open] summary::before { content: "−"; }
.result-json summary:hover { background: rgba(103, 232, 249, .08); }
.result-json pre.result {
  max-width: 100%;
  max-height: min(70vh, 42rem);
  min-height: 0;
  margin: 0;
  padding: 1rem 1.1rem 1.2rem;
  overflow-x: hidden;
  overflow-y: auto;
  border: 0;
  border-radius: 0;
  background: #020b18;
  color: #d9faff;
  font: .88rem/1.65 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  tab-size: 2;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  scrollbar-color: #52738d #061326;
}
.result-json pre.result:focus-visible { outline-offset: -3px; }
.dnssec-chain-nodes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; padding: 0; list-style-position: inside; }
.dnssec-chain-node { min-width: 0; padding: 1rem; border: 1px solid var(--border, #888); border-radius: .5rem; overflow-wrap: anywhere; }
.dnssec-chain-node h3 { margin-top: 0; }
.dnssec-chain-node ul { padding-inline-start: 1.25rem; }
.dnssec-chain-state { font-weight: 700; }
@media (max-width: 700px) { .dnssec-chain-nodes { grid-template-columns: minmax(0, 1fr); } }
.panel h2 { margin-top: 0; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: var(--space-2); }
.tool-card { padding: 1rem; }
.tool-card h3 { margin-top: 0; }
.tool-card p { color: var(--muted); }

table { width: 100%; border-collapse: collapse; background: var(--surface); }
td, th { padding: .55rem .7rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; overflow-wrap: anywhere; }
th { background: #e0f2fe; color: #0c4a6e; }
tr:nth-child(even) td { background: #f8fafc; }

form { max-width: 70rem; }
.panel form { display: grid; gap: .65rem; }
.panel form label { display: grid; gap: .3rem; }
.panel form button { justify-self: start; margin-top: .1rem; }
input, textarea, select, button { font: inherit; max-width: 100%; }
input, textarea, select { border: 1px solid #94a3b8; border-radius: .35rem; padding: .55rem .65rem; }
button, input[type="button"], input[type="submit"] { cursor: pointer; border: 0; border-radius: .35rem; padding: .55rem .8rem; background: var(--accent); color: white; }
button:hover, input[type="button"]:hover, input[type="submit"]:hover { background: var(--accent-strong); }
input:focus-visible, textarea:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid #7dd3fc; outline-offset: 2px; }

.site-footer { padding: var(--space-3) 0; font-size: .9rem; }
.site-footer a { color: #bae6fd; }
.site-footer-groups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-3); }
.site-footer-group h2 { margin: 0 0 var(--space-1); font-size: .9rem; }
.site-footer-group ul { display: grid; gap: var(--space-1); margin: 0; padding: 0; list-style: none; }
.site-footer-copyright { margin: var(--space-4) 0 0; color: var(--muted); }
.muted { color: var(--muted); overflow-wrap: anywhere; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 640px) {
  .site-header-inner, .site-footer-inner, .page-shell { width: min(100% - 1rem, 1120px); }
  .page-shell { padding-top: 1rem; }
  td, th { padding: .45rem; font-size: .92rem; }
  textarea { width: 100%; }
}

.eyebrow { margin: 0 0 .3rem; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.section-heading { margin: var(--space-4) 0 var(--space-2); }
.section-heading h2 { margin: 0; }
.tool-group { display: grid; gap: var(--space-3); margin: var(--space-4) 0 var(--space-5); }
.tool-card { display: block; color: var(--ink); text-decoration: none; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease; }
.tool-card:hover, .tool-card:focus-visible { color: var(--ink); border-color: #38bdf8; box-shadow: 0 12px 28px rgba(15, 23, 42, .12); transform: translateY(-2px); }
.tool-card img { display: block; margin-bottom: .8rem; }
.tool-card h3 { margin-bottom: .25rem; }
.tool-card p { margin-bottom: 0; }
.identity-panel { display: grid; grid-template-columns: minmax(10rem, .7fr) 1.3fr; gap: 1rem 2rem; align-items: start; }
.identity-panel h2 { margin-bottom: 0; }
.identity-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; margin: 0; }
.identity-grid div { padding: .75rem; background: #f8fafc; border-radius: .5rem; }
.identity-grid dt { color: var(--muted); font-size: .82rem; font-weight: 700; }
.identity-grid dd { margin: .2rem 0 0; overflow-wrap: anywhere; }
.identity-note { grid-column: 1 / -1; margin: 0; }
.button-link { display: inline-block; padding: .55rem .8rem; color: #fff; background: var(--accent); border-radius: .35rem; text-decoration: none; }
.button-link:hover, .button-link:focus-visible { color: #fff; background: var(--accent-strong); }
@media (max-width: 700px) {
  .identity-panel { grid-template-columns: 1fr; }
  .identity-grid { grid-template-columns: 1fr; }
}

.tool-hero { display: grid; grid-template-columns: auto 1fr; column-gap: 1rem; align-items: center; }
.tool-hero img { grid-row: span 3; }
.tool-hero .eyebrow, .tool-hero h1, .tool-hero p { grid-column: 2; }
.atomic-tool-page { display: grid; gap: var(--space-4); }
.atomic-tool-page > .tool-hero,
.atomic-tool-page > .panel { margin: 0; }
.tool-breadcrumb { min-width: 0; padding-top: var(--space-1); }
.tool-breadcrumb ol { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-2); margin: 0; padding: 0; list-style: none; color: var(--muted); }
.tool-breadcrumb li { overflow-wrap: anywhere; }
.tool-breadcrumb li + li::before { content: "›"; margin-right: var(--space-2); color: var(--accent); }
.tool-breadcrumb a { color: var(--accent); }
.atomic-tool-page .diagnostics-form-panel { display: grid; gap: var(--space-2); }
.atomic-tool-page #tool-form { display: grid; gap: var(--space-2); }
.atomic-tool-page #tool-form label { display: grid; gap: var(--space-1); }
.atomic-tool-page #tool-form input,
.atomic-tool-page #tool-form select,
.atomic-tool-page #tool-form textarea { box-sizing: border-box; width: 100%; min-width: 0; }
.atomic-tool-page #tool-form button { justify-self: start; }
.tool-related-section { display: grid; gap: var(--space-2); min-width: 0; }
.tool-related-section h2 { margin: 0; }
.atomic-tool-page .related-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); margin: 0; min-width: 0; }
.related-tool-card { display: grid; gap: var(--space-1); min-width: 0; padding: var(--space-2); color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: .75rem; text-decoration: none; }
.related-tool-card span { color: var(--muted); overflow-wrap: anywhere; }
.related-tool-card:hover, .related-tool-card:focus-visible { color: var(--ink); border-color: var(--accent); }
.tool-diagnostics-cta { display: grid; gap: var(--space-2); }
.tool-diagnostics-cta h2, .tool-diagnostics-cta p { margin: 0; }
.table-scroll { min-width: 0; overflow-wrap: anywhere; }
.table-scroll table, .panel table { max-width: 100%; table-layout: auto; }
.table-scroll td, .table-scroll th, .panel td, .panel th { overflow-wrap: anywhere; }
.related-tools { display: flex; flex-wrap: wrap; gap: .75rem 1rem; margin: 1rem 0; }
.danger-note { color: #9f1239; font-weight: 600; }
code { padding: .1rem .25rem; background: #0b2949; color: #d9faff; border-radius: .25rem; }
.example-list { margin: 0; padding-left: 0; list-style: none; }
.example-list code { display: inline-block; padding: .45rem .65rem; border: 1px solid rgba(103,232,249,.3); background: #061326; color: #d9faff; font-weight: 650; }
@media (max-width: 640px) {
  .tool-hero { grid-template-columns: 1fr; }
  .tool-hero img, .tool-hero .eyebrow, .tool-hero h1, .tool-hero p { grid-column: 1; }
  .atomic-tool-page .related-tools { grid-template-columns: 1fr; }
}

:root{color-scheme:dark;--ink:#e7f5ff;--muted:#a9bfd2;--line:rgba(165,243,252,.2);--surface:rgba(8,27,53,.88);--soft:#061326;--accent:#67e8f9;--accent-strong:#cffafe}
body{min-width:0;color:var(--ink);background:var(--soft)}
.site-header,.site-footer{background:#061326;color:var(--ink)}
.site-header{border-bottom:0}
.site-header-inner{min-height:5rem;padding:var(--space-2) 0;display:flex;align-items:center;justify-content:space-between;gap:var(--space-3)}
.brand{display:inline-flex;align-items:center;gap:.65rem;color:#f8fafc;text-decoration:none;font-weight:800;letter-spacing:.015em;font-size:1.18rem;white-space:nowrap}
.brand::before{content:"";width:2.35rem;height:2.35rem;flex:0 0 2.35rem;background:url("/assets/brand/netzwerkzeug-mark.svg") center/contain no-repeat}
.brand span{color:#67e8f9}
.site-nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:var(--space-1) var(--space-2);margin-top:0}
.site-nav a{color:#cde7f6;padding:.25rem 0;text-decoration:none}
.hero,.panel,.tool-card{background:var(--surface);border-color:var(--line);border-radius:1rem;box-shadow:0 1.2rem 3rem rgba(0,0,0,.22)}
.hero{padding:clamp(1.35rem,4vw,3.4rem);margin-bottom:1.25rem}
.home-hero{border:1px solid var(--line);box-sizing:border-box;min-height:clamp(27rem,57vw,42rem);display:flex;flex-direction:column;justify-content:center;overflow:hidden;isolation:isolate;background:linear-gradient(90deg,rgba(6,19,38,.98) 0%,rgba(6,19,38,.86) 37%,rgba(6,19,38,.2) 75%),url("/assets/hero/netzwerkzeug-hero-desktop.webp") center/cover no-repeat}
.home-hero>*{max-width:43rem;position:relative;z-index:1}
.hero h1{margin:0 0 .45rem;max-width:18ch;font-size:clamp(2.2rem,6vw,5rem);line-height:1.03;letter-spacing:-.035em}
.hero .eyebrow{color:#67e8f9}.hero .hero-line{color:#a5f3fc;font-size:clamp(1rem,2vw,1.25rem)}
.panel{padding:clamp(1rem,2.5vw,1.6rem);margin:1rem 0}
.tool-card{padding:1.1rem;color:var(--ink)}
.tool-card p,.tool-hero p{color:var(--muted)}
.identity-panel{background:linear-gradient(135deg,rgba(11,41,73,.96),rgba(8,27,53,.9))}
.identity-grid div{padding:.8rem;min-width:0;background:rgba(6,19,38,.65);border:1px solid rgba(103,232,249,.14);border-radius:.65rem}
.identity-grid dt{color:#a5f3fc;font-size:.78rem;font-weight:750;letter-spacing:.08em;text-transform:uppercase}
table{background:rgba(11,41,73,.94)} th{background:#0b2949;color:#a5f3fc} tr:nth-child(even) td{background:rgba(6,19,38,.45)}
input,textarea,select{width:100%;color:var(--ink);background:rgba(6,19,38,.82);border:1px solid #52738d;border-radius:.45rem;padding:.65rem .7rem}
button,input[type=button],input[type=submit],.button-link{border-radius:.45rem;padding:.65rem .9rem;background:#22d3ee;color:#061326;font-weight:750}
.button-link{text-decoration:none}
.site-footer{padding:var(--space-3) 0}.site-footer a{color:#a5f3fc}
*:focus-visible{outline:3px solid #a5f3fc;outline-offset:3px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}
@media(max-width:760px){.site-header-inner{align-items:flex-start;flex-direction:column}.site-nav,.site-primary-nav ul{justify-content:flex-start}.language-selector{margin-left:0}.site-footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.home-hero{min-height:38rem;background:linear-gradient(180deg,rgba(6,19,38,.93),rgba(6,19,38,.72) 43%,rgba(6,19,38,.15)),url("/assets/hero/netzwerkzeug-hero-mobile.webp") center/cover no-repeat}.home-hero h1{max-width:14ch}.identity-panel{grid-template-columns:1fr}.identity-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.identity-note{grid-column:1}}
@media(max-width:520px){.site-header-inner,.site-footer-inner,.page-shell{width:min(100% - 1rem,1120px)}.page-shell{padding-top:1rem}.site-footer-groups{grid-template-columns:1fr}.identity-grid{grid-template-columns:1fr}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-2)}.tool-card{padding:.8rem}.tool-card img{width:40px;height:40px}.tool-hero{grid-template-columns:1fr}.tool-hero img,.tool-hero .eyebrow,.tool-hero h1,.tool-hero p{grid-column:1}}

.api-doc{max-width:1160px;margin:0 auto;padding:2rem 1rem 4rem}.api-doc h1{font-size:clamp(2rem,5vw,3.6rem)}.api-doc pre{white-space:pre-wrap;overflow-wrap:anywhere;overflow-x:hidden;background:#020b18;color:#d9faff;border:1px solid rgba(103,232,249,.15);border-radius:.6rem;padding:1rem}

@supports (background-image: image-set(url("x") type("image/webp"))) { .home-hero { background-image: linear-gradient(90deg,rgba(6,19,38,.98) 0%,rgba(6,19,38,.86) 37%,rgba(6,19,38,.2) 75%), image-set(url("/assets/hero/netzwerkzeug-hero-desktop.webp") type("image/webp"), url("/assets/hero/netzwerkzeug-hero-desktop.jpg") type("image/jpeg")); } }
@supports (background-image: image-set(url("x") type("image/webp"))) { @media (max-width:760px) { .home-hero { background-image: linear-gradient(180deg,rgba(6,19,38,.93),rgba(6,19,38,.72) 43%,rgba(6,19,38,.15)), image-set(url("/assets/hero/netzwerkzeug-hero-mobile.webp") type("image/webp"), url("/assets/hero/netzwerkzeug-hero-mobile.jpg") type("image/jpeg")); } } }

/* Host-specific design hooks. Add a matching site-theme-* rule for each site in site-config.php. */
.site-theme-netzwerkzeug { --accent: #67e8f9; --accent-strong: #cffafe; }
.brand-lockup { display: flex; flex-direction: column; align-items: flex-start; gap: .75rem; width: 100%; }
.brand { gap: .65rem; }
.brand-text { display: inline-flex; gap: 0; white-space: nowrap; }
.brand-name, .brand-suffix { display: inline; }
.brand-suffix { color: #67e8f9; }
.connection-panel { grid-template-columns: 1fr; width: min(100%, 48rem); margin: 0; padding: .65rem .75rem; box-shadow: 0 .7rem 1.5rem rgba(0,0,0,.18); }
.connection-panel .identity-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; }
.connection-panel .identity-grid div { padding: .55rem .65rem; }
.tool-card img { display: block; width: 48px; height: 48px; object-fit: contain; visibility: visible; opacity: 1; }
@media(max-width:760px) {
  .brand-lockup, .connection-panel { width: 100%; }
}
@media(max-width:520px) {
  .connection-panel .identity-grid { grid-template-columns: 1fr; }
  .tool-card img { width: 48px; height: 48px; }
}

/* The connection details are an independent panel below the hero content. */
.home-hero { position: relative; padding-bottom: clamp(8rem, 15vw, 10rem); }
.home-hero .hero-identity { position: absolute; left: 0; right: 0; bottom: 0; z-index: 3; width: auto; max-width: none; margin: 0; background: linear-gradient(180deg, rgba(8,27,53,.18), rgba(8,27,53,.78)); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.hero-identity .identity-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; }
.hero-identity .identity-grid div { padding: .35rem .8rem; background: transparent; border: 0; border-left: 1px solid rgba(165,243,252,.22); border-radius: 0; }
.hero-identity .identity-grid div:first-child { border-left: 0; }
.hero-identity .identity-grid dd { color: #e7f5ff; }
@media(max-width:760px) {
  .home-hero { padding-bottom: 12rem; }
  .home-hero .hero-identity { left: 0; right: 0; bottom: 0; }
  .hero-identity .identity-grid { grid-template-columns: 1fr; }
  .hero-identity .identity-grid div { border-left: 0; border-top: 1px solid rgba(165,243,252,.22); }
  .hero-identity .identity-grid div:first-child { border-top: 0; }
}

.hero-identity .identity-summary { display: flex; flex-direction: column; gap: .35rem; margin: 0; color: #e7f5ff; }
.hero-identity .identity-summary > div { display: block; min-width: 0; overflow-wrap: anywhere; }
.hero-identity .identity-summary strong { color: #a5f3fc; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }

/* Stage 3: the homepage presents Domain Diagnostics before atomic tools. */
.homepage-stack { display: grid; gap: var(--space-4); }
.diagnostics-hero { min-height: clamp(30rem, 52vw, 40rem); justify-content: center; }
.diagnostics-hero > * { max-width: 52rem; }
.diagnostics-hero h1 { max-width: 16ch; }
.diagnostics-form { display: grid; gap: var(--space-1); max-width: 52rem; margin: var(--space-3) 0 0; }
.diagnostics-form label { color: #e7f5ff; font-weight: 700; }
.diagnostics-form-controls { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-2); align-items: end; }
.diagnostics-form-controls button { min-width: 8rem; }
.homepage-trust { color: #a5f3fc !important; font-size: .92rem; margin-top: var(--space-2) !important; }
.diagnostics-hero .diagnostics-form { margin-top: var(--space-2); }
.problem-entries { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem var(--space-1); margin: var(--space-1) 0 0; max-width: 52rem; }
.problem-entries-label { width: 100%; margin: 0; color: #a5f3fc; font-size: .88rem; }
.problem-entry { padding: .35rem .8rem; border: 1px solid rgba(165,243,252,.45); border-radius: 2rem; color: #cde7f6; font-size: .9rem; text-decoration: none; white-space: nowrap; transition: background .15s, border-color .15s; }
.problem-entry:hover,.problem-entry:focus-visible { background: rgba(103,232,249,.15); border-color: #67e8f9; color: #fff; }
.problem-entry.is-selected { background: rgba(103,232,249,.25); border-color: #67e8f9; color: #fff; }
.homepage-identity { width: min(100%, 48rem); margin: 0; padding: var(--space-2); }
.homepage-explanation { margin: 0; }
.homepage-explanation h2 { max-width: 28ch; }
.homepage-teasers { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(16rem, .65fr); gap: var(--space-3); }
.homepage-teaser { display: flex; flex-direction: column; margin: 0; }
.homepage-tool-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); margin: var(--space-2) 0 var(--space-3); }
.homepage-tool-card { display: flex; align-items: center; gap: var(--space-1); min-width: 0; min-height: 3.5rem; padding: var(--space-1) var(--space-2); color: var(--ink); text-decoration: none; background: rgba(6,19,38,.5); border: 1px solid var(--line); border-radius: .65rem; }
.homepage-tool-card:hover, .homepage-tool-card:focus-visible { color: var(--ink); border-color: #67e8f9; }
.homepage-tool-card span { overflow-wrap: anywhere; }
.homepage-secondary-cta { align-self: flex-start; margin-top: auto; }

/* Stage 4: the public Diagnostics presentation reuses the accepted tool renderer. */
.diagnostics-page .page-shell { display: grid; gap: var(--space-4); }
.diagnostics-page .tool-hero,
.diagnostics-page .diagnostics-form-panel { margin: 0; }
.diagnostics-page .diagnostics-page-header { padding-block: var(--space-4); }
.diagnostics-page .diagnostics-form-panel { display: grid; gap: var(--space-2); }
.diagnostics-page .diagnostic-conclusions { margin-top: var(--space-4); }
.diagnostics-page #tool-result { margin-top: var(--space-3); }
.diagnostics-page .result-json { margin-top: var(--space-4); }

/* Stage 5: dense, categorized atomic-tool catalog with token-owned gaps. */
.toolbox-page .page-shell { display: grid; gap: var(--space-4); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.toolbox-search-wrap { display: flex; gap: var(--space-1); align-items: center; margin-top: var(--space-2); max-width: 36rem; }
.toolbox-search { flex: 1 1 auto; min-width: 0; padding: .5rem .75rem; border: 1px solid rgba(148,163,184,.5); border-radius: .4rem; background: rgba(6,19,38,.6); color: #e7f5ff; font-size: 1rem; }
.toolbox-search:focus { outline: 2px solid #67e8f9; outline-offset: 2px; border-color: transparent; }
.toolbox-search::placeholder { color: #94a3b8; }
.toolbox-search-clear { padding: .45rem .8rem; border: 1px solid rgba(148,163,184,.4); border-radius: .4rem; background: rgba(6,19,38,.5); color: #a5f3fc; cursor: pointer; font-size: .9rem; }
.toolbox-search-clear:hover { background: rgba(103,232,249,.15); }
.toolbox-empty { margin: 0; color: var(--muted); font-size: .95em; }
.toolbox-disambiguation { display: block; margin-top: .35rem; color: #526176; font-size: .88em; font-style: italic; }
.toolbox-page .toolbox-header,
.toolbox-page .toolbox-diagnostics-cta { margin: 0; }
.toolbox-category { display: grid; gap: var(--space-3); min-width: 0; }
.toolbox-category-header h2 { margin: 0 0 var(--space-1); }
.toolbox-category-header p { margin: 0; color: var(--muted); }
.toolbox-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-2); min-width: 0; }
.toolbox-card { display: block; min-width: 0; padding: var(--space-2); color: var(--ink); text-decoration: none; }
.toolbox-card h3 { margin: 0 0 var(--space-1); overflow-wrap: anywhere; }
.toolbox-card p { margin: 0; color: var(--muted); overflow-wrap: anywhere; }
.toolbox-card:hover, .toolbox-card:focus-visible { color: var(--ink); border-color: #67e8f9; }
.toolbox-diagnostics-cta { display: grid; gap: var(--space-2); }
.toolbox-diagnostics-cta h2, .toolbox-diagnostics-cta p { margin: 0; }
@media (max-width: 900px) { .toolbox-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .toolbox-card-grid { grid-template-columns: minmax(0, 1fr); } }
@media(max-width:760px) {
  .diagnostics-hero { min-height: 0; }
  .diagnostics-form-controls, .homepage-teasers { grid-template-columns: 1fr; }
  .diagnostics-form-controls button { width: 100%; }
}
@media(max-width:520px) {
  .homepage-tool-list { grid-template-columns: 1fr; }
}
.result-notice { margin: 0 0 .75rem; padding: .6rem .85rem; border-left: 4px solid var(--accent, #075985); background: var(--soft, #f4f7fb); border-radius: 0 6px 6px 0; }
.result-summary { margin: 0 0 .5rem; font-weight: 600; }
.result-facts { display: grid; grid-template-columns: minmax(7rem, max-content) 1fr; gap: .35rem 1rem; margin: .5rem 0 .75rem; }
.result-facts dt { font-weight: 600; color: var(--text, inherit); }
.result-facts dd { margin: 0; overflow-wrap: anywhere; }
.result-json-detail { margin-top: .5rem; }
@media (max-width: 600px) { .result-facts { grid-template-columns: 1fr; gap: .1rem; } .result-facts dd { margin-bottom: .5rem; } }

/* Filtered cards must stay hidden despite their display rules. */
[hidden] { display: none !important; }
.snapshot-row { flex-wrap: wrap; overflow-wrap: anywhere; }
.snapshot-row label { flex: 1; min-width: 0; }
.snapshot-measurements pre { white-space: pre-wrap; overflow-wrap: anywhere; }
/* Compact result actions and bounded DNS source table. */
.diagnostic-actions { display:flex; flex-wrap:wrap; gap:.5rem; margin:1rem 0; }
.diagnostics-page .diagnostics-form-panel { grid-template-columns:minmax(0,1fr); }
.diagnostics-form-panel > *, .diagnostic-conclusions > *, .diagnostic-results > *, #recheck-comparison { min-width:0; }
.diagnostic-actions button, .guided-recheck button { max-width:100%; white-space:normal; overflow-wrap:anywhere; }
.guided-recheck, .dns-migration { min-width:0; overflow-wrap:anywhere; }
.dns-table-scroll { max-width:100%; overflow-x:auto; margin:1rem 0; }
.dns-table-scroll table { width:100%; min-width:48rem; table-layout:fixed; border-collapse:collapse; }
.dns-table-scroll th:nth-child(1) { width:30%; }
.dns-table-scroll th:nth-child(2) { width:6%; }
.dns-table-scroll th:nth-child(3) { width:24%; }
.dns-table-scroll th:nth-child(4) { width:16%; }
.dns-table-scroll th:nth-child(5), .dns-table-scroll th:nth-child(6) { width:12%; }
.dns-table-scroll th, .dns-table-scroll td { padding:.5rem; text-align:left; border-bottom:1px solid var(--border, #526077); overflow-wrap:anywhere; }
#recheck-status { overflow-wrap:anywhere; }

/* Result wrappers receive programmatic focus; only their real controls need a focus ring. */
#tool-result:focus, #diagnostic-conclusions:focus { outline: none; }

.diagnostic-guidance { margin: .65rem 0; overflow-wrap: anywhere; }
.diagnostic-guidance dt { margin-top: .5rem; font-weight: 700; }
.diagnostic-guidance dd { margin: .15rem 0 .45rem; color: var(--muted); }

/* Infrastructure roles share measured evidence and collapse without scripting. */
.infra-roles { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:1rem; margin-bottom:1rem; }
.infra-role { min-width:0; padding:1rem; border:1px solid var(--line); border-radius:.65rem; }
.infra-role-provider { font-size:1.15rem; font-weight:700; margin:.4rem 0; overflow-wrap:anywhere; }
.infra-role-evidence { margin-top:.8rem; overflow-wrap:anywhere; }
.infra-role-evidence summary { cursor:pointer; }
.infra-role-path { padding:.75rem 0; overflow-wrap:anywhere; color:var(--muted); }
@media(max-width:640px) { .infra-roles { grid-template-columns:minmax(0,1fr); } }

.infra-role-name { display:flex; align-items:center; gap:.6rem; min-width:0; }
.infra-role-name + .infra-role-name { margin-top:.4rem; }
.infra-role-name > span { min-width:0; overflow-wrap:anywhere; }
.infra-provider-logo { width:28px; height:28px; object-fit:contain; flex:none; border-radius:0; }
.infra-provider-logo[hidden] { display:none; }

/* Text entry keeps its one-pixel border while focus is indicated by color. */
input:not([type="button"]):not([type="submit"]):not([type="checkbox"]):not([type="radio"]):focus,
textarea:focus, select:focus {
  outline: none;
  box-shadow: none;
  border-color: #67e8f9;
}

/* Long localized headings must shrink and wrap within the viewport. */
.page-shell, .page-shell > *, .hero > * { min-width: 0; }
.hero h1, .panel h1, .panel h2, .breadcrumbs { overflow-wrap: anywhere; }
.tool-hero { grid-template-columns: auto minmax(0, 1fr); }
@media (max-width: 760px) { .tool-hero { grid-template-columns: minmax(0, 1fr); } }

.diagnostic-investigation,.diagnostic-subdomains { margin-block: 1rem; padding-block: .8rem; border-top: 1px solid var(--muted); min-width: 0; overflow-wrap: anywhere; }
.diagnostic-investigation li { margin-block: .8rem; }
.diagnostic-investigation li p { margin-block: .35rem; }
.diagnostic-causal-chain { border-left: 3px solid var(--accent); padding-inline-start: .75rem; margin-block: .8rem; }