/* Erriscope — design tokens
   Subject: technical error diagnosis for people in the middle of an outage.
   Concept: a diagnostic instrument, not a blog. Status color (green/amber/red)
   is drawn from the product's own domain — HTTP/DNS/SSL states — so it is
   load-bearing content, not decoration. Layout borrows from monitoring
   dashboards: dense, scannable, status-first.
   Palette: paper #F6F4EF, ink #1B2430, line #D8D3C6, signal-ok #1F7A5C,
            signal-warn #B4750F, signal-down #B4402A, accent #2451B5.
   Type: IBM Plex Mono for status codes/labels (the "instrument readout"),
         IBM Plex Sans for body copy (the "explanation").
*/

:root {
  --paper: #F6F4EF;
  --paper-raised: #FFFFFF;
  --ink: #1B2430;
  --ink-soft: #4B5563;
  --line: #D8D3C6;
  --line-strong: #B9B2A0;
  --ok: #1F7A5C;
  --ok-bg: #E7F3EC;
  --warn: #B4750F;
  --warn-bg: #FBF0DC;
  --down: #B4402A;
  --down-bg: #FAE9E4;
  --accent: #2451B5;
  --accent-ink: #12306E;
  --radius: 3px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 2px rgba(27, 36, 48, 0.06);
  --shadow-md: 0 4px 14px rgba(27, 36, 48, 0.08);
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0D1117;
    --paper-raised: #161B22;
    --ink: #E6EDF3;
    --ink-soft: #9BA6B2;
    --line: #2A313C;
    --line-strong: #3A4351;
    --ok-bg: rgba(31, 122, 92, 0.16);
    --warn-bg: rgba(180, 117, 15, 0.16);
    --down-bg: rgba(180, 64, 42, 0.16);
    --accent-ink: #6E9EFF;
  }
}
:root[data-theme="dark"] {
  --paper: #0D1117;
  --paper-raised: #161B22;
  --ink: #E6EDF3;
  --ink-soft: #9BA6B2;
  --line: #2A313C;
  --line-strong: #3A4351;
  --ok-bg: rgba(31, 122, 92, 0.16);
  --warn-bg: rgba(180, 117, 15, 0.16);
  --down-bg: rgba(180, 64, 42, 0.16);
  --accent-ink: #6E9EFF;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent); }

h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 600;
  line-height: 1.25;
  margin: 1.6em 0 0.5em;
}
h1 { font-size: 2rem; margin-top: 0; letter-spacing: -0.01em; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }

p { max-width: 68ch; }
.guide-content p, .guide-content li { max-width: 74ch; }

code {
  font-family: var(--mono);
  background: rgba(27, 36, 48, 0.06);
  padding: 0.1em 0.4em;
  border-radius: var(--radius);
  font-size: 0.9em;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper-raised);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  padding-right: 10px;
}
.brand:hover { color: var(--ink); }
.brand__mark { color: var(--accent); font-size: 1rem; }
.brand__dot { color: var(--accent); }
.main-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.main-nav a {
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
}
.main-nav a:hover { color: var(--accent-ink); }

/* ---------- Hero / status strip ---------- */
.hero {
  border-bottom: 1px solid var(--line);
  padding: 56px 0 48px;
}
.hero__eyebrow {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent-ink);
  margin: 0 0 10px;
}
.hero h1 { font-size: 2.4rem; max-width: 18ch; }
.hero__lede { font-size: 1.1rem; color: var(--ink-soft); max-width: 56ch; }

/* ---------- Status readout blocks (used on checker + guide quick-answer) ---------- */
.readout {
  font-family: var(--mono);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid transparent;
}
.readout--ok { background: var(--ok-bg); color: var(--ok); border-color: rgba(31,122,92,0.25); }
.readout--warn { background: var(--warn-bg); color: var(--warn); border-color: rgba(180,117,15,0.25); }
.readout--down { background: var(--down-bg); color: var(--down); border-color: rgba(180,64,42,0.25); }
.readout__dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

.quick-answer {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px 22px;
  margin: 28px 0 36px;
}
.quick-answer__label {
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: none;
  color: var(--accent-ink);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.quick-answer p { margin: 0; max-width: 70ch; font-size: 1.05rem; }

/* ---------- Cards / grids ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin: 28px 0;
}
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 18px 20px;
  display: block;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.card__code {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent-ink);
  display: block;
  margin-bottom: 6px;
}
.card__title { font-weight: 600; color: var(--ink); margin: 0 0 6px; }
.card__desc { color: var(--ink-soft); font-size: 0.92rem; margin: 0; }

.category-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 40px;
}
.category-chip {
  font-family: var(--mono);
  font-size: 0.82rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  color: var(--ink-soft);
  background: var(--paper-raised);
}
.category-chip:hover { border-color: var(--accent); color: var(--accent-ink); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 22px 0 6px;
}
.breadcrumbs a { color: var(--ink-soft); }
.breadcrumbs a:hover { color: var(--accent-ink); }
.breadcrumbs span[aria-hidden] { margin: 0 6px; color: var(--line-strong); }

/* ---------- Guide layout ---------- */
.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 48px;
  padding: 12px 0 64px;
  align-items: start;
}
.guide-content section { margin-bottom: 36px; }
.guide-content ul, .guide-content ol { padding-left: 1.3em; }
.guide-content li { margin-bottom: 0.5em; }

.guide-sidebar {
  position: sticky;
  top: 24px;
  border: 1px solid var(--line);
  background: var(--paper-raised);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}
.guide-sidebar h2 { font-size: 0.9rem; margin-top: 0; font-family: var(--mono); font-weight: 500; color: var(--ink-soft); }
.guide-sidebar a { display: block; font-size: 0.92rem; margin-bottom: 10px; }

/* ---------- Table of contents ---------- */
.guide-toc { display: flex; flex-direction: column; gap: 2px; margin-bottom: 4px; }
.guide-toc a {
  font-size: 0.88rem;
  padding: 5px 8px;
  margin: 0;
  border-radius: var(--radius);
  color: var(--ink-soft);
  border-left: 2px solid transparent;
}
.guide-toc a:hover { background: var(--paper); color: var(--accent-ink); border-left-color: var(--accent); }

/* ---------- Code blocks ---------- */
.code-block {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 20px 0;
  overflow: hidden;
}
.code-block__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.code-block__lang {
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
.code-block__copy {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink-soft);
  padding: 3px 10px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.code-block__copy:hover { color: var(--accent-ink); border-color: var(--accent); }
.code-block pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.6;
}
.code-block code { background: none; padding: 0; }
.code-block .tok-com { color: var(--ink-soft); font-style: italic; }
.code-block .tok-str { color: var(--ok); }

/* ---------- FAQ accordion ---------- */
.faq-accordion { display: flex; flex-direction: column; gap: 10px; margin: 16px 0; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-raised);
  box-shadow: var(--shadow-sm);
  padding: 4px 4px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  padding: 12px 16px;
  list-style: none;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 10px;
  font-family: var(--mono);
  color: var(--accent-ink);
  font-size: 1.1rem;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item__answer { padding: 0 16px 14px; color: var(--ink-soft); }
.faq-item__answer p:first-child { margin-top: 0; }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  margin: 20px 0 32px;
}

.escalation {
  background: var(--paper-raised);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  margin: 36px 0;
}
.escalation h2 { margin-top: 0; }

/* ---------- Checker tool ---------- */
.checker-tool {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 24px;
  margin: 28px 0 40px;
}
.checker-form { display: flex; gap: 10px; flex-wrap: wrap; }
.checker-input {
  flex: 1 1 320px;
  font-family: var(--mono);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--paper);
  color: var(--ink);
}
.checker-input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 22px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.btn:hover { background: #1b2430; box-shadow: var(--shadow-md); transform: translateY(-1px); color: #fff; }
.btn:disabled { background: var(--line-strong); cursor: not-allowed; }
.checker-note { font-size: 0.82rem; color: var(--ink-soft); margin-top: 10px; }

.result-panel { margin-top: 22px; border-top: 1px solid var(--line); padding-top: 20px; }
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin: 16px 0;
}
.result-field {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  background: var(--paper);
}
.result-field__label { font-family: var(--mono); font-size: 0.72rem; color: var(--ink-soft); display: block; margin-bottom: 4px; }
.result-field__value { font-family: var(--mono); font-size: 0.98rem; }

/* ---------- Service status hub (Is It Down?) ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin: 16px 0 8px;
}
.service-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 12px 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.service-card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.service-card__name {
  flex: 1;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.service-monogram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #fff;
  font-family: var(--mono);
  font-weight: 600;
  flex-shrink: 0;
}
.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line);
  flex-shrink: 0;
  overflow: hidden;
}
.service-icon img { width: 62%; height: 62%; object-fit: contain; }

/* ---------- Reviewer trust card ---------- */
.reviewer-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 14px 16px;
  margin: 4px 0 28px;
}
.reviewer-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-family: var(--mono);
  font-weight: 600;
  flex-shrink: 0;
}
.reviewer-card__body { flex: 1; min-width: 0; }
.reviewer-card__name { font-weight: 700; margin: 0; font-size: 0.95rem; }
.reviewer-card__link { font-weight: 400; font-size: 0.82rem; }
.reviewer-card__title { margin: 2px 0 0; font-size: 0.85rem; color: var(--ink-soft); }
.reviewer-card__bio { margin: 6px 0 0; font-size: 0.86rem; color: var(--ink-soft); line-height: 1.5; }
.reviewer-card__verified { margin: 8px 0 0; font-size: 0.78rem; font-family: var(--mono); color: var(--ok); }

/* ---------- Guide figures / diagnostic flow diagram ---------- */
.guide-figure { margin: 20px 0; }
.guide-figure svg { width: 100%; height: auto; display: block; }
.guide-figure figcaption {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 8px;
  font-family: var(--mono);
}
.diagnostic-flow {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 16px;
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 44px 0 20px; }
.site-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}
.site-footer__heading { font-family: var(--mono); font-size: 0.8rem; color: var(--ink-soft); margin: 0 0 10px; }
.site-footer a { display: block; font-size: 0.92rem; margin-bottom: 8px; color: var(--ink-soft); }
.site-footer a:hover { color: var(--accent-ink); }
.brand--footer { font-size: 1rem; margin-bottom: 8px; }
.muted { color: var(--ink-soft); font-size: 0.88rem; }
.site-footer__legal { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 16px; }

@media (max-width: 860px) {
  .guide-layout { grid-template-columns: 1fr; }
  .guide-sidebar { position: static; }
  .site-footer__inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Phase 2 editorial homepage / landing pages ---------- */
.home-hero { border-bottom:1px solid var(--line); background:linear-gradient(180deg,var(--paper-raised),var(--paper)); padding:58px 0 52px; }
.home-hero__grid { display:grid; grid-template-columns:minmax(0,1.4fr) minmax(300px,.8fr); gap:48px; align-items:center; }
.home-hero h1 { font-size:clamp(2.4rem,5vw,4.2rem); max-width:14ch; letter-spacing:-.035em; }
.home-hero__actions { display:flex; gap:18px; align-items:center; flex-wrap:wrap; margin-top:26px; }
.text-link { font-weight:600; }
.home-trust-line { display:flex; gap:16px; flex-wrap:wrap; margin-top:24px; font-family:var(--mono); font-size:.72rem; color:var(--ink-soft); }
.home-trust-line span { border-left:2px solid var(--line-strong); padding-left:9px; }
.checker-promo { background:var(--ink); color:#fff; border-radius:var(--radius-lg); padding:28px; box-shadow:var(--shadow-md); }
.checker-promo h2 { margin:6px 0 8px; color:#fff; font-size:1.45rem; }
.checker-promo p { color:#C7CBD1; }
.checker-promo__label,.eyebrow { font-family:var(--mono); font-size:.74rem; letter-spacing:.08em; color:var(--accent-ink); text-transform:uppercase; }
.checker-promo__label { color:#AFC4FF; }
.checker-promo__note { font-size:.75rem; margin:14px 0 0; }
.btn--light { background:#fff; color:var(--ink); border-color:#fff; }
.btn--light:hover { color:var(--ink); color: #fff; }
.home-section { padding-top:54px; padding-bottom:54px; }
.home-section--border { border-top:1px solid var(--line); }
.section-heading { display:flex; justify-content:space-between; align-items:end; gap:24px; flex-wrap:wrap; }
.section-heading h2 { margin:2px 0 4px; }
.section-heading p { margin:0; }
.category-cards { display:grid; grid-template-columns:repeat(5,minmax(0,1fr)); gap:12px; margin-top:26px; }
.category-card { background:var(--paper-raised); border:1px solid var(--line); border-radius:var(--radius-md); padding:18px; min-height:190px; display:flex; flex-direction:column; transition:.15s ease; }
.category-card:hover { border-color:var(--accent); box-shadow:var(--shadow-md); transform:translateY(-2px); }
.category-card h3 { margin:6px 0 8px; font-size:1.03rem; }
.category-card p { color:var(--ink-soft); font-size:.88rem; margin:0; }
.category-card__label { font-family:var(--mono); font-size:.68rem; color:var(--accent-ink); }
.category-card__arrow,.card__arrow { margin-top:auto; padding-top:16px; font-size:.82rem; font-weight:600; }
.home-guide-grid .card { min-height:185px; display:flex; flex-direction:column; }
.home-section--split { display:grid; grid-template-columns:1fr 1fr; gap:52px; }
.home-methodology,.home-trust { min-width:0; }
.home-methodology ol { padding-left:1.3em; }
.home-methodology li { margin-bottom:12px; }
.home-trust { padding-left:34px; border-left:1px solid var(--line); }
.narrow-section { max-width:760px; margin:0 auto; }
.content-hero-image,.guide-hero-image img,.service-hero-image img { width:100%; border:1px solid var(--line); border-radius:var(--radius-lg); display:block; object-fit:cover; background:var(--paper); }
.content-hero-image { max-height:360px; object-fit:cover; }
.guide-hero-image,.service-hero-image { margin:22px 0 28px; }
.guide-hero-image img,.service-hero-image img { max-height:430px; }
.category-hero { display:grid; grid-template-columns:minmax(0,1fr) minmax(260px,.65fr); gap:40px; align-items:center; padding:30px 0 20px; }
.category-prose { max-width:760px; padding:20px 0 28px; }
@media (max-width: 980px) { .category-cards { grid-template-columns:repeat(2,minmax(0,1fr)); } .home-hero__grid,.category-hero,.home-section--split { grid-template-columns:1fr; } .home-trust { padding-left:0; border-left:0; border-top:1px solid var(--line); padding-top:34px; } }
@media (max-width: 600px) { .category-cards { grid-template-columns:1fr; } .home-hero { padding-top:38px; } .home-hero h1 { font-size:2.45rem; } .home-trust-line { flex-direction:column; gap:8px; } }
.standard-page { max-width: 820px; padding-bottom: 72px; }
.standard-hero { padding: 26px 0 20px; }
.standard-hero h1 { font-size:clamp(2rem,4vw,3rem); }
.standard-content { padding: 18px 0 36px; }

/* ---------- Phase 3: premium editorial landing pages ---------- */
.home-hero__copy { min-width: 0; }
.home-hero__visual { display: grid; gap: 14px; }
.home-hero-image { margin: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: var(--paper-raised); box-shadow: var(--shadow-sm); }
.home-hero-image img { display:block; width:100%; aspect-ratio:16/9; object-fit:cover; }
.diagnostic-map { display:grid; grid-template-columns:repeat(7,auto); align-items:center; justify-content:center; gap:8px; min-height:92px; padding:18px; border:1px dashed var(--line-strong); border-radius:var(--radius-lg); background:var(--paper-raised); font-family:var(--mono); font-size:.72rem; color:var(--ink-soft); }
.diagnostic-map span { padding:8px 10px; border:1px solid var(--line); border-radius:999px; background:var(--paper); color:var(--ink); }
.diagnostic-map i { font-style:normal; color:var(--accent-ink); }
.diagnostic-map b { grid-column:1/-1; text-align:center; font-family:var(--sans); font-size:.8rem; color:var(--ink-soft); }
.home-section--stats { display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding: 0 2px; }
.home-stat { background:var(--paper); padding:22px 20px; display:flex; flex-direction:column; gap:4px; }
.home-stat strong { font-size:1.55rem; letter-spacing:-.02em; }
.home-stat span { color:var(--ink-soft); font-size:.8rem; }
.home-service-grid { grid-template-columns:repeat(4,minmax(0,1fr)); }
.home-guide-card { padding:0; overflow:hidden; }
.home-guide-card__image { display:block; width:100%; aspect-ratio:16/9; object-fit:cover; border-bottom:1px solid var(--line); background:var(--paper); }
.home-guide-card__diagram { display:flex; align-items:center; justify-content:center; aspect-ratio:16/9; border-bottom:1px solid var(--line); background:linear-gradient(135deg,var(--paper),var(--paper-raised)); }
.home-guide-card__diagram span { width:48px; height:48px; display:flex; align-items:center; justify-content:center; border:1px solid var(--line-strong); border-radius:50%; font-family:var(--mono); font-weight:600; color:var(--accent-ink); }
.home-guide-card__body { padding:18px 20px 20px; min-height:170px; display:flex; flex-direction:column; }
.home-guide-card .card__desc { line-height:1.55; }
.home-section--dark { padding-top:0; padding-bottom:0; }
.home-cta-band { display:flex; align-items:center; justify-content:space-between; gap:28px; padding:34px 38px; background:var(--ink); color:#fff; border-radius:var(--radius-lg); box-shadow:var(--shadow-md); }
.home-cta-band h2 { color:#fff; margin:2px 0 8px; }
.home-cta-band p { color:#C7CBD1; max-width:62ch; }
.home-cta-band .eyebrow { color:#AFC4FF; }
.category-hero--premium { padding:34px 0 30px; }
.category-hero__media { margin:0; }
.category-hero__media img { max-height:340px; }
.category-hero__meta { display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }
.category-hero__meta span { border:1px solid var(--line); background:var(--paper-raised); border-radius:999px; padding:6px 10px; font-family:var(--mono); font-size:.7rem; color:var(--ink-soft); }
.category-hero__diagram { min-height:250px; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; padding:22px; border:1px dashed var(--line-strong); border-radius:var(--radius-lg); background:var(--paper-raised); font-family:var(--mono); font-size:.76rem; }
.category-hero__diagram span { border:1px solid var(--line); border-radius:999px; padding:9px 14px; background:var(--paper); }
.category-hero__diagram i { font-style:normal; color:var(--accent-ink); }
.category-next-step { display:flex; align-items:center; justify-content:space-between; gap:26px; margin:44px 0; padding:28px 30px; border:1px solid var(--line); border-radius:var(--radius-lg); background:var(--paper-raised); }
.category-next-step h2 { margin:2px 0 7px; }
.category-next-step p { margin:0; color:var(--ink-soft); max-width:65ch; }
.category-faq { max-width:820px; margin:44px 0 0; }
@media (max-width: 980px) {
  .home-service-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .home-section--stats { grid-template-columns:repeat(2,1fr); }
  .home-cta-band,.category-next-step { align-items:flex-start; flex-direction:column; }
}
@media (max-width: 600px) {
  .home-service-grid,.home-section--stats { grid-template-columns:1fr; }
  .diagnostic-map { grid-template-columns:1fr; }
  .diagnostic-map i { transform:rotate(90deg); }
  .diagnostic-map b { grid-column:auto; }
  .home-cta-band { padding:24px; }
}

/* ---------- Phase 4: guide editorial blocks ---------- */
.guide-takeaways {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px 24px 18px;
  margin: 0 0 34px;
  box-shadow: var(--shadow-sm);
}
.guide-takeaways h2 { margin-top: 0; font-size: 1.25rem; }
.guide-takeaways ul { margin-bottom: 0; }
.guide-sources {
  border-top: 1px solid var(--line);
  padding-top: 28px;
}
.guide-sources h2 { margin-top: 0; }
.guide-content a { text-decoration-thickness: 1px; text-underline-offset: 2px; }
.guide-content .reviewer-card a { text-decoration: none; }

/* ---------- Service editorial layer ---------- */
.service-editorial-card {
  margin-top: 28px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-raised);
  box-shadow: var(--shadow-sm);
}
.service-editorial-card h2 { margin-top: 0; }
.service-related-guides { margin-top: 40px; }
.service-related-guides .card { overflow: hidden; }
.service-related-guides__image { display:block; width:100%; aspect-ratio:16/9; object-fit:cover; margin:-18px -18px 14px; width:calc(100% + 36px); }
.service-sources { margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--line); }

/* ---------- Phase 7: editorial graph / internal linking ---------- */
.related-content { margin: 42px 0; }
.related-content__grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; margin-top:18px; }
.related-content__card { display:flex; flex-direction:column; overflow:hidden; border:1px solid var(--line); border-radius:var(--radius-md); background:var(--paper-raised); color:var(--ink); transition:.15s ease; }
.related-content__card:hover { border-color:var(--accent); box-shadow:var(--shadow-md); transform:translateY(-2px); }
.related-content__card img { display:block; width:100%; aspect-ratio:16/8; object-fit:cover; border-bottom:1px solid var(--line); }
.related-content__mark { display:flex; align-items:center; justify-content:center; aspect-ratio:16/8; border-bottom:1px solid var(--line); font:600 1.6rem var(--mono); color:var(--accent-ink); background:var(--paper); }
.related-content__body { display:flex; flex-direction:column; gap:6px; padding:15px 16px 17px; min-height:125px; }
.related-content__body strong { font-size:.95rem; line-height:1.35; }
.related-content__body small { color:var(--ink-soft); line-height:1.45; }
.related-content__body em { margin-top:auto; font-style:normal; font-size:.78rem; font-weight:600; }
.related-services-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px; margin-top:18px; }
.related-service-card { display:flex; align-items:center; gap:11px; padding:14px; border:1px solid var(--line); border-radius:var(--radius-md); background:var(--paper-raised); color:var(--ink); }
.related-service-card:hover { border-color:var(--accent); box-shadow:var(--shadow-sm); }
.related-service-card > span { min-width:0; display:flex; flex-direction:column; gap:2px; }
.related-service-card strong { font-size:.88rem; }
.related-service-card small { color:var(--ink-soft); font-size:.72rem; }
.related-service-card b { margin-left:auto; color:var(--accent-ink); }
@media (max-width: 900px) { .related-content__grid,.related-services-grid { grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width: 600px) { .related-content__grid,.related-services-grid { grid-template-columns:1fr; } }

/* ---------- Phase 8: accessibility, mobile navigation & 404 ---------- */
.skip-link { position:absolute; left:-9999px; top:8px; z-index:9999; padding:10px 14px; background:var(--ink); color:#fff; border-radius:var(--radius-md); }
.skip-link:focus { left:12px; color:#fff; }
.btn--secondary { background:var(--paper-raised); color:var(--accent-ink); }
.not-found-actions { display:flex; gap:12px; flex-wrap:wrap; margin-top:24px; }
.not-found-links { margin-top:48px; }
/* Responsive header rules are consolidated below. */

/* ---------- Phase 4G: error library hub ---------- */
.error-library { padding-bottom:72px; }
.error-library__hero { display:flex; justify-content:space-between; align-items:flex-end; gap:32px; padding:24px 0 30px; border-bottom:1px solid var(--line); }
.error-library__hero > div:first-child { max-width:780px; }
.error-library__count { min-width:150px; padding:18px 20px; border:1px solid var(--line); border-radius:var(--radius-lg); background:var(--paper-raised); box-shadow:var(--shadow-sm); text-align:center; }
.error-library__count strong { display:block; font-size:2rem; line-height:1; }
.error-library__count span { display:block; margin-top:7px; color:var(--ink-soft); font-size:.8rem; }
.error-library__search { margin:28px 0 42px; padding:18px 20px; border:1px solid var(--line); border-radius:var(--radius-lg); background:var(--paper-raised); }
.error-library__search label { display:block; margin-bottom:9px; font-size:.82rem; font-weight:700; }
.error-library__search > div { display:flex; gap:10px; }
.error-library__search input { flex:1; min-width:0; padding:11px 13px; border:1px solid var(--line); border-radius:var(--radius-md); background:var(--paper); color:var(--ink); font:inherit; }
.error-library__section { margin-top:42px; }
.error-library__grid { grid-template-columns:repeat(3,minmax(0,1fr)); }
.error-library__card { display:flex; flex-direction:column; min-height:220px; }
.error-library__card .card__arrow { margin-top:auto; }
.error-library__empty { padding:36px; border:1px solid var(--line); border-radius:var(--radius-lg); background:var(--paper-raised); }
.error-library__checker { margin-top:56px; }
@media (max-width:900px) { .error-library__grid { grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:650px) { .error-library__hero { align-items:flex-start; flex-direction:column; } .error-library__count { width:100%; } .error-library__grid { grid-template-columns:1fr; } .error-library__search > div { flex-wrap:wrap; } .error-library__search input { flex-basis:100%; } }

/* Header and language selector styles are consolidated below. */

/* ---------- Erriscope live community signal + embeddable status badge ---------- */
.service-feedback { margin:24px 0 28px; padding:20px 22px; border:1px solid var(--line); border-radius:var(--radius-lg); background:var(--paper-raised); box-shadow:var(--shadow-sm); }
.service-feedback__question { margin:0 0 4px; font-weight:700; color:var(--ink); }
.service-feedback__summary { margin:0; }
.service-feedback__actions { display:flex; flex-wrap:wrap; gap:9px; margin-top:14px; }
.service-feedback__status { min-height:1.25em; margin:10px 0 0; font-size:.82rem; }
.service-feedback button[aria-pressed="true"] { outline:2px solid var(--accent); outline-offset:2px; }
.service-embed { margin:42px 0 28px; padding-top:28px; border-top:1px solid var(--line); }
.service-embed h2 { margin-top:0; }
.embed-preview { display:flex; align-items:center; min-height:48px; margin:14px 0; }
.service-embed pre { margin:12px 0 0; padding:14px 16px; overflow:auto; border:1px solid var(--line); border-radius:var(--radius-md); background:var(--ink); color:#fff; font-size:.78rem; }
.status-summary-table { width:100%; margin:18px 0 0; border-collapse:collapse; font-size:.88rem; }
.status-summary-table caption { text-align:left; margin-bottom:8px; font-weight:700; color:var(--ink); }
.status-summary-table th,.status-summary-table td { padding:10px 12px; border:1px solid var(--line); text-align:left; vertical-align:top; }
.status-summary-table th { background:var(--paper-raised); font-size:.75rem; letter-spacing:.02em; text-transform:uppercase; }
@media(max-width:600px){.service-feedback__actions{flex-direction:column}.service-feedback__actions .btn{width:100%}.status-summary-table{font-size:.8rem}}


/* === Phase 1: responsive header + locale selector (replaces scroll menu) === */
.site-header { position:relative; z-index:40; }
.site-header__inner { min-height:64px; height:auto; gap:22px; }
.site-header__actions { margin-left:auto; display:flex; align-items:center; gap:10px; flex:0 0 auto; }
.site-header .main-nav { min-width:0; gap:clamp(10px,1.25vw,22px); flex-wrap:nowrap; }
.site-header .main-nav a { white-space:nowrap; font-size:clamp(.76rem,.92vw,.92rem); }
.site-header__toggle { display:none; align-items:center; justify-content:center; width:42px; height:42px; border:1px solid var(--line); border-radius:10px; background:var(--paper-raised); color:var(--ink); cursor:pointer; }
.site-header__close { display:none; }
.site-header__toggle[aria-expanded="true"] .site-header__close { display:block; }
.site-header__toggle[aria-expanded="true"] .site-header__hamburger { display:none; }
.site-header__toggle:focus-visible,.language-menu summary:focus-visible,.main-nav a:focus-visible,.language-menu a:focus-visible { outline:2px solid var(--accent); outline-offset:3px; }
.language-menu { position:relative; margin-left:0; }
.language-menu summary { display:flex; align-items:center; gap:7px; cursor:pointer; list-style:none; padding:9px 11px; border:1px solid var(--line); border-radius:10px; background:var(--paper-raised); color:var(--ink); white-space:nowrap; font-size:.82rem; }
.language-menu summary::-webkit-details-marker { display:none; }
.language-menu summary::marker { content:''; }
.language-menu__list { position:absolute; z-index:60; right:0; top:calc(100% + 8px); min-width:205px; max-height:min(65vh,430px); overflow-y:auto; padding:7px; border:1px solid var(--line); border-radius:var(--radius-md); background:var(--paper-raised); box-shadow:var(--shadow-md); }
.language-menu__list a,.language-menu__unavailable { display:block; padding:10px 12px; font-size:.88rem; border-radius:8px; }
.language-menu__list a:hover,.language-menu__list a[aria-current="page"] { background:rgba(27,36,48,.07); }
.language-menu__unavailable { color:var(--ink-soft); opacity:.58; cursor:not-allowed; }
@media(max-width:1100px) { .site-header__inner { gap:12px; } .site-header .main-nav { gap:10px; } }
@media(max-width:860px) {
  .site-header__inner { display:flex; align-items:center; flex-wrap:wrap; gap:0; min-height:64px; padding-top:9px; padding-bottom:9px; }
  .site-header__actions { margin-left:auto; gap:8px; }
  .site-header__toggle { display:inline-flex; }
  .site-header .main-nav { display:none; order:3; flex:0 0 100%; width:100%; overflow:visible; flex-direction:column; align-items:stretch; gap:0; padding:10px 0 4px; margin-top:10px; border-top:1px solid var(--line); }
  .site-header .main-nav.is-open { display:flex; }
  .site-header .main-nav a { white-space:normal; padding:12px 8px; min-height:44px; font-size:.95rem; border-radius:8px; }
  .site-header .main-nav a:hover { background:rgba(27,36,48,.06); }
  .language-menu__list { max-width:calc(100vw - 24px); }
}
@media(max-width:360px) { .language-menu summary { padding:8px; } .brand { font-size:.95rem; } .site-header__actions { gap:5px; } }

/* v2: native touch menu and safe viewport sizing */
.site-header .language-menu__list { max-width:min(285px,calc(100vw - 24px)); overscroll-behavior:contain; }
@media(max-width:860px) {
 .site-header .main-nav { box-sizing:border-box; overflow-x:hidden; }
 .site-header .main-nav.is-open { max-height:calc(100dvh - 84px); overflow-y:auto; overscroll-behavior:contain; }
 .site-header__inner { align-items:center; }
}