/* =========================================================
   AmbiSecure — Main Stylesheet
   Inherits Ambimat brand palette; extends with technical-security tokens
   for AmbiSecure's distinct identity within the ecosystem.

   Brand:  Red #E3222A · Grey #616A6C · Dark #3A3F40 · Soft #F4F5F6
   Type:   Montserrat (headings) · Source Sans 3 (body) · JetBrains Mono (code)
   ========================================================= */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* Brand (shared with eSIM site / Ambimat group) */
  --brand-red: #E3222A;
  --brand-red-dark: #B81A21;
  --brand-grey: #616A6C;
  --brand-dark: #3A3F40;
  --brand-soft: #F4F5F6;

  /* AmbiSecure technical accents (used only on technical surfaces) */
  --secure-cyan: #0E8C9C;
  --secure-cyan-dark: #086573;
  --secure-cyan-soft: #E6F4F6;
  --secure-amber: #C77A00;
  --secure-amber-soft: #FFF4E2;
  --secure-green: #2E8B4F;
  --secure-green-soft: #E5F4EA;

  /* Code surface */
  --code-bg: #14161A;
  --code-fg: #E6E6EA;
  --code-key: #FF8A8A;
  --code-comment: #7c8189;

  /* Aliases used by components */
  --bg: #ffffff;
  --bg-alt: var(--brand-soft);
  --grid-line: #e5e5e5;
  --card: #eef0f1;
  --card-soft: #f0f0f1;
  --ink: #1A1D1E;
  --ink-2: var(--brand-dark);
  --muted: var(--brand-grey);
  --muted-2: #8a9295;
  --line: #e2e2e4;
  --dark: var(--brand-dark);
  --accent: var(--brand-red);
  --accent-dark: var(--brand-red-dark);

  /* Type scale */
  --fs-hero: 48px;
  --fs-h1: 38px;
  --fs-h2: 34px;
  --fs-h3: 26px;
  --fs-h4: 19px;
  --fs-body: 16.5px;
  --fs-small: 14px;
  --fs-eyebrow: 11.5px;

  /* Layout */
  --pad-section: 100px 80px;
  --maxw-section: 1280px;
  --maxw-hero: 1320px;
  --maxw-prose: 820px;
  --radius-card: 6px;
  --radius-btn: 4px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Source Sans 3', 'Source Sans Pro', 'Roboto', 'Segoe UI', sans-serif;
  font-size: var(--fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.logo, .nav-links a, .btn, .nav-btn,
.section-title, .hero-title, .eyebrow,
.brand-line, .ecosystem-label,
.footer h4, .stat-num {
  font-family: 'Montserrat', 'Segoe UI', sans-serif;
  letter-spacing: -0.1px;
}

code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace; }

img { max-width: 100%; display: block; }
a { color: inherit; }

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 8px;
  background: var(--brand-dark);
  color: #fff;
  padding: 10px 16px;
  border-radius: 4px;
  z-index: 100;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 13px;
  text-decoration: none;
}
.skip-link:focus { top: 8px; }

/* =========================================================
   ECOSYSTEM BAR
   ========================================================= */
.ecosystem-bar {
  background: var(--brand-dark);
  color: #d8dadb;
  font-size: 12.5px;
  letter-spacing: 0.2px;
  border-bottom: 1px solid #4a5051;
}
.ecosystem-bar-inner {
  max-width: var(--maxw-hero);
  margin: 0 auto;
  padding: 9px 80px;
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}
.ecosystem-label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 1.4px;
  color: #9aa0a3;
}
.ecosystem-bar a {
  color: #d8dadb;
  text-decoration: none;
  font-weight: 500;
  font-family: 'Montserrat', sans-serif;
  position: relative;
  padding: 4px 2px;
  transition: color .2s ease;
}
.ecosystem-bar a:hover { color: #fff; }
.ecosystem-bar a.current { color: #fff; }
.ecosystem-bar a.current::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -10px;
  height: 2px;
  background: var(--brand-red);
}
.ecosystem-bar .ext::after { content: ' \2197'; font-size: 10px; opacity: .6; }
.ecosystem-bar .spacer { flex: 1; }
.ecosystem-bar .meta { font-size: 11.5px; color: #9aa0a3; font-family: 'Montserrat', sans-serif; }

/* =========================================================
   NAVBAR
   ========================================================= */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 80px;
  background: #fff;
  border-bottom: 1px solid var(--brand-soft);
  position: sticky;
  top: 0;
  z-index: 50;
}
.navbar::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand-red) 30%, var(--brand-red) 70%, transparent);
  opacity: 0.35;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--ink);
}
/* PHASE 23 — Use the official AmbiSecure logo (assets/img/ambisecure-logo.webp).
   The crest carries its own internal "AMBI SECURE" wordmark, so the adjacent
   .brand-text wordmark is hidden site-wide (no per-page markup sweep needed). */
.brand-mark {
  height: 52px;
  width: 52px;
  background: transparent url('/assets/img/ambisecure-logo.webp') center/contain no-repeat;
  border: 0;
  border-radius: 0;
  font-size: 0;
  color: transparent;
  position: relative;
  flex-shrink: 0;
  box-shadow: none;
}
/* Phase 25: footer brand-mark sits on a dark footer, so the logo gets its
   own white circle so the gray ring doesn't blend in. The image is composed
   onto the white background via background-image + background-color. */
.footer-brand .brand-mark {
  height: 84px;
  width: 84px;
  background-color: #ffffff;
  background-size: 86%;
  background-position: center;
  background-repeat: no-repeat;
  border: 0;
  border-radius: 50%;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
}
.brand-text { display: none; }
.brand-text-legacy { display: flex; flex-direction: column; line-height: 1.15; }
.brand-line {
  font-weight: 700;
  font-size: 15px;
  color: var(--brand-dark);
  letter-spacing: 0.2px;
}
.brand-line .accent { color: var(--brand-red); }
.brand-tag {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 11px;
  letter-spacing: 0.4px;
  color: var(--brand-grey);
  margin-top: 2px;
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 26px;
  list-style: none;
  align-items: center;
}
.nav-links a {
  text-decoration: none;
  color: var(--brand-dark);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: 0.2px;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--brand-red);
  border-color: var(--brand-red);
}

.nav-actions { display: flex; gap: 10px; align-items: center; }

/* Phase 20 — global site-search trigger sitting beside the contact CTA */
.nav-search {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line, #E1E3E4);
  color: var(--brand-grey, #616A6C);
  padding: 8px 12px;
  border-radius: var(--radius-btn, 6px);
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, box-shadow .15s ease;
}
.nav-search:hover {
  border-color: var(--brand-red);
  color: var(--brand-dark);
  box-shadow: 0 6px 14px rgba(58,63,64,0.06);
}
.nav-search svg { display: block; }
.nav-search kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  background: var(--brand-soft, #F4F5F6);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--brand-grey);
  border: 1px solid var(--line, #E1E3E4);
}
@media (max-width: 880px) {
  .nav-search .nav-search-label,
  .nav-search kbd { display: none; }
  .nav-search { padding: 8px 10px; }
}

.nav-btn {
  background: var(--brand-red);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 13px;
  font-weight: 600;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 0.3px;
  text-decoration: none;
  display: inline-block;
  transition: background .2s ease, transform .15s ease, box-shadow .2s ease;
}
.nav-btn:hover {
  background: var(--brand-red-dark);
  box-shadow: 0 6px 14px rgba(227,34,42,0.22);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}
.hamburger span { width: 25px; height: 3px; background: var(--brand-dark); transition: .25s; border-radius: 1px; }

/* =========================================================
   BREADCRUMB
   ========================================================= */
.breadcrumb {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 18px 80px 0;
  font-size: 12.5px;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 0.4px;
  color: var(--muted-2);
  text-transform: uppercase;
}
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--brand-red); }
.breadcrumb .sep { margin: 0 8px; color: var(--line); }
.breadcrumb .current { color: var(--brand-dark); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  /* Phase 30: tighten the whitespace above the small AmbiSecure logo and
     between the logo, eyebrow, and headline. Keep min-height prominent so
     the hero still dominates the first viewport without dead space. */
  min-height: 88vh;
  background:
    radial-gradient(ellipse at 82% -10%, rgba(227,34,42,0.09), transparent 58%),
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    #ffffff;
  background-size: auto, 60px 60px, 60px 60px, auto;
  padding: 56px 80px 96px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(45deg, transparent 49.5%, rgba(227,34,42,0.04) 49.5%, rgba(227,34,42,0.04) 50.5%, transparent 50.5%);
  background-size: 18px 18px;
  pointer-events: none;
  mix-blend-mode: multiply;
  opacity: 0.5;
  mask-image: radial-gradient(ellipse 60% 60% at 100% 0%, black, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 100% 0%, black, transparent 70%);
}
.hero-container {
  max-width: var(--maxw-hero);
  margin: auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  position: relative;
}
.hero-left { flex: 1.05; }
.hero-right { flex: 0.95; display: flex; justify-content: center; }

/* Hero-crest: the official AmbiSecure circular crest used as the hero's
   right-side flagship visual. The source asset is a JPG with white square
   padding around the circular crest — border-radius:50% masks those corners
   so only the medallion is visible (no white square halo). */
.hero-crest {
  width: 100%;
  max-width: 540px;
  height: auto;
  border-radius: 50%;
  background: transparent;
  filter: drop-shadow(0 18px 44px rgba(58,63,64,0.18));
}
/* Hero-logo: small medallion above the eyebrow on hero-left. Same circular
   clip + drop-shadow as the crest for visual coherence. */
.hero-logo {
  width: 80px;
  height: 80px;
  display: block;
  margin: 0 0 10px 0;
  border-radius: 50%;
  background: transparent;
  filter: drop-shadow(0 6px 16px rgba(58,63,64,0.14));
}
.hero-tag {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  letter-spacing: 2.6px;
  color: var(--brand-red);
  margin-bottom: 10px;
  text-transform: uppercase;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.hero-tag::before { content: ''; width: 22px; height: 2px; background: var(--brand-red); }

.hero-title {
  font-size: 66px;
  font-weight: 700;
  line-height: 1.04;
  color: var(--ink);
  margin-bottom: 28px;
  letter-spacing: -1.6px;
}
.hero-title .accent { color: var(--brand-red); }

.hero-desc {
  font-size: 19px;
  line-height: 1.7;
  color: var(--brand-grey);
  max-width: 640px;
  margin-bottom: 38px;
}

.hero-cta-row { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-creds {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--rule, #E1E3E4);
  display: flex;
  gap: 22px 26px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--ink);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}
.hero-creds span { display: inline-flex; align-items: center; gap: 8px; }
.hero-creds span::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--brand-red);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Hero visual — secure-element illustration (SVG asset) */
.hero-visual-img {
  width: 100%;
  max-width: 460px;
  height: auto;
  display: block;
  filter: drop-shadow(0 18px 40px rgba(58,63,64,0.14));
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-block;
  padding: 14px 26px;
  border-radius: var(--radius-btn);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 13.5px;
  text-decoration: none;
  transition: all .2s ease;
  border: 1px solid transparent;
  cursor: pointer;
  letter-spacing: 0.4px;
  white-space: nowrap;
}
.btn-primary { background: var(--brand-red); color: #fff; }
.btn-primary:hover { background: var(--brand-red-dark); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(227,34,42,0.22); }
.btn-dark { background: var(--brand-dark); color: #fff; }
.btn-dark:hover { background: var(--brand-red); }
.btn-outline { background: transparent; color: var(--brand-dark); border-color: var(--brand-dark); }
.btn-outline:hover { background: var(--brand-dark); color: #fff; }
.btn-ghost { background: transparent; color: var(--brand-dark); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand-red); color: var(--brand-red); }
.btn-small { padding: 10px 18px; font-size: 12.5px; }
/* Tertiary text-only CTA: same typographic rhythm as .btn but no fill or
   border. Use for low-emphasis hero/section actions like "Browse
   resources →" alongside a filled primary and outlined secondary. */
.btn-text {
  background: transparent;
  color: var(--ink, #3A3F40);
  border-color: transparent;
  padding-left: 6px;
  padding-right: 6px;
}
.btn-text:hover {
  background: transparent;
  color: var(--brand-red, #E3222A);
}

/* =========================================================
   SECTIONS
   ========================================================= */
section { padding: var(--pad-section); }
section.alt { background: var(--brand-soft); }
section.dark { background: var(--brand-dark); color: #fff; }
section.dark .section-title, section.dark h3 { color: #fff; }
section.dark .section-desc, section.dark p { color: #c9cccd; }

.section-container { max-width: var(--maxw-section); margin: auto; }
.section-narrow { max-width: 1000px; margin: auto; }

.section-head { text-align: center; margin-bottom: 60px; }
.section-head.left { text-align: left; }

.eyebrow {
  font-size: var(--fs-eyebrow);
  letter-spacing: 2.6px;
  color: var(--brand-red);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-size: var(--fs-h2);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--ink);
}

.section-line {
  width: 60px;
  height: 3px;
  background: var(--brand-red);
  margin: 14px auto 22px;
}
.section-head.left .section-line { margin-left: 0; }

.section-desc {
  font-size: var(--fs-body);
  color: var(--brand-grey);
  line-height: 1.75;
  max-width: 760px;
  margin: 0 auto;
}
.section-head.left .section-desc { margin: 0; }

/* =========================================================
   GRIDS / CARDS
   ========================================================= */
/* Phase 21 — grid system, second pass.
   `.grid-N` is now a flex wrap with a centred last row by default. Full
   rows render identically to the previous CSS Grid layout (each item is
   `(100% - (N-1)*gap) / N` wide). Orphans in the final row land in the
   centre — no per-page opt-in needed. */
.grid-2, .grid-3, .grid-4 {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
}
.grid-2 { gap: 28px; }
.grid-3 { gap: 24px; }
.grid-4 { gap: 22px; }

.grid-2 > * { flex: 1 1 calc((100% - 28px) / 2); max-width: calc((100% - 28px) / 2); min-width: 0; }
.grid-3 > * { flex: 1 1 calc((100% - 48px) / 3); max-width: calc((100% - 48px) / 3); min-width: 0; }
.grid-4 > * { flex: 1 1 calc((100% - 66px) / 4); max-width: calc((100% - 66px) / 4); min-width: 0; }

/* `.is-centered` is preserved as a no-op alias for back-compat. */
.grid-2.is-centered, .grid-3.is-centered, .grid-4.is-centered {}

/* Phase 19 — standards evolution timeline */
.timeline {
  position: relative;
  margin: 32px 0 48px;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-red) 0%, var(--brand-red) 50%, #C8CACC 100%);
  opacity: 0.6;
}
.timeline-entry {
  position: relative;
  padding: 0 0 28px 24px;
}
.timeline-entry::before {
  content: '';
  position: absolute;
  left: -34px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--brand-red);
  box-shadow: 0 0 0 4px #fff, 0 0 0 5px rgba(227,34,42,0.18);
}
.timeline-entry .tl-year {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 1.4px;
  color: var(--brand-grey);
  font-weight: 600;
  margin-bottom: 4px;
}
.timeline-entry h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
  letter-spacing: -0.1px;
}
.timeline-entry p {
  font-size: 14px;
  color: var(--brand-grey);
  line-height: 1.65;
  margin: 0;
}
.timeline-entry .tl-refs {
  margin-top: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.6px;
  color: var(--secure-cyan-dark);
}
.timeline-entry .tl-refs a {
  color: var(--secure-cyan-dark);
  text-decoration: none;
  border-bottom: 1px dotted currentColor;
}
.timeline-entry .tl-refs a:hover { color: var(--brand-red); border-bottom-color: var(--brand-red); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 32px 28px;
  border-radius: var(--radius-card);
  transition: all .25s ease;
  position: relative;
  text-decoration: none;
  color: inherit;
  display: block;
}
.card::before {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 0;
  height: 3px;
  background: var(--brand-red);
  transition: width .25s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(58,63,64,0.08);
  border-color: #d8d8da;
}
.card:hover::before { width: 36px; }

.card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ink);
  font-family: 'Montserrat', sans-serif;
}
.card p { color: var(--brand-grey); font-size: 15px; line-height: 1.7; }

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  background: rgba(227,34,42,0.08);
  color: var(--brand-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 18px;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 0.5px;
}
.card-icon.cyan { background: var(--secure-cyan-soft); color: var(--secure-cyan-dark); }

.card-meta {
  margin-top: 18px;
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  color: var(--brand-red);
  font-weight: 600;
  letter-spacing: 0.3px;
}

.card-soft {
  background: var(--card);
  padding: 30px;
  border-radius: var(--radius-card);
  transition: all .25s ease;
}
.card-soft:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(58,63,64,0.08); }

/* Feature row */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row.reverse > :first-child { order: 2; }

.feature-visual {
  background: var(--card);
  border-radius: 8px;
  padding: 40px;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-grey);
  font-weight: 600;
  text-align: center;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.feature-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(45deg, transparent 49.5%, rgba(227,34,42,0.06) 49.5%, rgba(227,34,42,0.06) 50.5%, transparent 50.5%);
  background-size: 14px 14px;
  pointer-events: none;
}
.feature-visual > * { position: relative; }
.feature-visual.feature-visual-img {
  padding: 0;
  background: transparent;
  border: none;
  min-height: 0;
}
.feature-visual.feature-visual-img::before { content: none; }
.feature-visual.feature-visual-img img {
  width: 100%;
  height: auto;
  max-width: 520px;
  display: block;
  border-radius: 12px;
  filter: drop-shadow(0 14px 30px rgba(58,63,64,0.12));
}

/* =========================================================
   STATS
   ========================================================= */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 50px;
}
.stat {
  text-align: center;
  padding: 24px 12px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; }
.stat-num { font-size: 32px; font-weight: 700; color: var(--brand-red); }
.stat-label { font-size: 13px; color: var(--brand-grey); margin-top: 8px; letter-spacing: 0.3px; font-family: 'Montserrat', sans-serif; }

/* =========================================================
   ARCHITECTURE / TRUST CHAIN
   ========================================================= */
.arch {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  align-items: stretch;
  justify-content: center;
  margin: 30px auto;
  max-width: 1100px;
}
.arch-node {
  flex: 1 1 160px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px 18px;
  text-align: center;
  position: relative;
  margin: 8px;
  min-width: 160px;
}
.arch-node h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
  font-family: 'Montserrat', sans-serif;
}
.arch-node p { font-size: 12px; color: var(--brand-grey); line-height: 1.5; }
.arch-node.accent { border-color: var(--brand-red); background: #fff8f8; }
.arch-node .arch-tag {
  position: absolute;
  top: 8px; left: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted-2);
  letter-spacing: 0.4px;
}
.arch-arrow {
  align-self: center;
  color: var(--brand-red);
  font-size: 22px;
  font-weight: 700;
}

/* Trust chain (vertical stack diagram) */
.trust-chain {
  max-width: 720px;
  margin: 30px auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.trust-chain .layer {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 14px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}
.trust-chain .layer .layer-name {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 14px;
  color: var(--ink);
}
.trust-chain .layer .layer-tag {
  font-size: 11px;
  color: var(--secure-cyan-dark);
  background: var(--secure-cyan-soft);
  padding: 3px 8px;
  border-radius: 12px;
  letter-spacing: 0.4px;
  font-weight: 600;
}
.trust-chain .layer.root {
  background: var(--brand-dark);
  color: #fff;
  border-color: var(--brand-dark);
}
.trust-chain .layer.root .layer-name { color: #fff; }
.trust-chain .layer.root .layer-tag { background: rgba(255,255,255,0.12); color: #fff; }

/* =========================================================
   CALLOUT
   ========================================================= */
.callout {
  background: var(--brand-dark);
  color: #fff;
  border-radius: var(--radius-card);
  padding: 56px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.callout::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(45deg, transparent 49.5%, rgba(227,34,42,0.10) 49.5%, rgba(227,34,42,0.10) 50.5%, transparent 50.5%);
  background-size: 16px 16px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 50% 100% at 100% 50%, black, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 50% 100% at 100% 50%, black, transparent 80%);
}
.callout > * { position: relative; }
.callout h2 { font-size: 26px; font-weight: 700; margin-bottom: 10px; font-family: 'Montserrat', sans-serif; letter-spacing: -0.3px; color: #fff; }
.callout p { color: #c9cccd; max-width: 620px; font-size: 15px; line-height: 1.7; }

/* =========================================================
   LISTS
   ========================================================= */
.bullet-list { list-style: none; padding: 0; }
.bullet-list li {
  padding: 10px 0 10px 26px;
  position: relative;
  color: var(--brand-grey);
  line-height: 1.7;
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}
.bullet-list li:last-child { border-bottom: none; }
.bullet-list li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 19px;
  width: 8px;
  height: 8px;
  background: var(--brand-red);
  border-radius: 1px;
  transform: rotate(45deg);
}

/* Inline keyword "chips" */
.chip {
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 20px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  display: inline-block;
}
.chip.cyan { background: var(--secure-cyan-soft); color: var(--secure-cyan-dark); }
.chip.red { background: rgba(227,34,42,0.08); color: var(--brand-red-dark); }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }

/* Filter pills */
.pill {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: #fff;
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--brand-dark);
  cursor: pointer;
  transition: all .2s ease;
  text-decoration: none;
}
.pill:hover { border-color: var(--brand-red); color: var(--brand-red); }
.pill.pill--active {
  background: var(--brand-dark);
  color: #fff;
  border-color: var(--brand-dark);
}
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }

/* =========================================================
   PROSE (blog, About, technical pages)
   ========================================================= */
.prose { max-width: var(--maxw-prose); margin: auto; color: var(--brand-dark); }
.prose h1 { font-family: 'Montserrat', sans-serif; font-size: var(--fs-h1); font-weight: 700; line-height: 1.18; margin-bottom: 18px; color: var(--ink); letter-spacing: -0.6px; }
.prose .dek { font-size: 19px; color: var(--brand-grey); line-height: 1.6; margin-bottom: 8px; }
.prose h2 { font-family: 'Montserrat', sans-serif; font-size: 26px; font-weight: 700; margin: 44px 0 14px; color: var(--ink); letter-spacing: -0.3px; }
.prose h3 { font-family: 'Montserrat', sans-serif; font-size: 19px; font-weight: 700; margin: 28px 0 10px; color: var(--ink); }
.prose p { font-size: 16.5px; line-height: 1.85; margin-bottom: 16px; color: var(--brand-grey); }
.prose ul, .prose ol { margin: 10px 0 20px 22px; }
.prose li { font-size: 16.5px; line-height: 1.85; margin-bottom: 8px; color: var(--brand-grey); }
.prose strong { color: var(--ink); font-weight: 700; }
.prose blockquote {
  border-left: 3px solid var(--brand-red);
  padding: 8px 18px;
  margin: 22px 0;
  color: var(--brand-grey);
  background: var(--brand-soft);
  border-radius: 0 6px 6px 0;
}
.prose code {
  background: var(--brand-soft);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--brand-red-dark);
}
.prose pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 18px 20px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 18px 0 22px;
  font-size: 13.5px;
  line-height: 1.6;
  border: 1px solid #1e2026;
}
.prose pre code { background: transparent; color: inherit; padding: 0; font-size: 13.5px; border-radius: 0; }
.prose pre .k { color: var(--code-key); }
.prose pre .c { color: var(--code-comment); }
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 24px;
  font-size: 14.5px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.prose thead { background: var(--brand-soft); }
.prose th, .prose td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.55;
}
.prose th {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  color: var(--ink);
  font-size: 13px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}
.prose td { color: var(--brand-grey); }
.prose tbody tr:last-child th,
.prose tbody tr:last-child td { border-bottom: none; }
.prose hr { border: 0; height: 1px; background: var(--line); margin: 36px 0; }
.prose a { color: var(--brand-red); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--brand-red-dark); }

.post-meta {
  font-size: 13px;
  color: var(--muted-2);
  margin-bottom: 18px;
  letter-spacing: 0.3px;
  font-family: 'Montserrat', sans-serif;
  text-transform: uppercase;
  font-weight: 600;
}
.post-meta span + span::before { content: '\00b7'; margin: 0 8px; color: var(--line); }

/* FAQ */
.faq { border-top: 1px solid var(--line); margin-top: 40px; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 4px; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
  list-style: none;
  position: relative;
  padding-right: 30px;
  font-family: 'Montserrat', sans-serif;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0;
  color: var(--brand-red);
  font-size: 22px;
  font-weight: 400;
  transition: transform .2s;
}
.faq details[open] summary::after { content: '\2212'; }
.faq details p { margin-top: 12px; color: var(--brand-grey); font-size: 15px; line-height: 1.75; }

/* =========================================================
   BLOG INDEX CARD
   ========================================================= */
.blog-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all .25s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  text-decoration: none;
  color: inherit;
}
.blog-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 0;
  height: 3px;
  background: var(--brand-red);
  transition: width .25s ease;
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(58,63,64,0.08);
  border-color: #d8d8da;
}
.blog-card:hover::before { width: 36px; }
.blog-card .chip { background: rgba(227,34,42,0.08); color: var(--brand-red-dark); align-self: flex-start; margin-bottom: 14px; }
.blog-card h3 { font-size: 18px; line-height: 1.3; margin-bottom: 10px; color: var(--ink); font-family: 'Montserrat', sans-serif; }
.blog-card p { font-size: 14.5px; color: var(--brand-grey); line-height: 1.65; margin-bottom: 16px; flex: 1; }
.blog-card .read-more { font-size: 13px; font-weight: 600; color: var(--brand-red); text-decoration: none; font-family: 'Montserrat', sans-serif; letter-spacing: 0.3px; }

/* =========================================================
   SPEC TABLE (product detail)
   ========================================================= */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  margin: 24px 0;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.55;
}
.spec-table th {
  width: 30%;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  color: var(--brand-dark);
  font-size: 13px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.spec-table td { color: var(--brand-grey); font-family: 'JetBrains Mono', monospace; font-size: 13.5px; }

/* =========================================================
   CONTACT FORM
   ========================================================= */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 720px; margin: 0 auto; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row.full { grid-column: 1 / -1; }
.form-row label { font-size: 13px; font-weight: 600; color: var(--brand-dark); font-family: 'Montserrat', sans-serif; letter-spacing: 0.3px; }
.form-row input,
.form-row select,
.form-row textarea {
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  padding: 12px 14px;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 15px;
  color: var(--ink);
  background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-row textarea { min-height: 130px; resize: vertical; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--brand-red);
  box-shadow: 0 0 0 3px rgba(227,34,42,0.15);
}

/* =========================================================
   FOOTER
   ========================================================= */
footer.site-footer {
  background: var(--brand-dark);
  color: #c9cccd;
  padding: 70px 80px 30px;
  font-size: 14px;
}
.footer-inner { max-width: var(--maxw-section); margin: 0 auto; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid #4a5051;
}
footer.site-footer h4 {
  font-size: 13px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
  font-family: 'Montserrat', sans-serif;
}
footer.site-footer ul { list-style: none; }
footer.site-footer li { margin-bottom: 9px; }
footer.site-footer a { color: #c9cccd; text-decoration: none; transition: color .2s; font-size: 13.5px; }
footer.site-footer a:hover { color: var(--brand-red); }

.footer-brand .brand-line { color: #fff; }
.footer-brand .brand-tag { color: #9aa0a3; }
.footer-brand p { color: #9aa0a3; line-height: 1.65; margin-top: 16px; font-size: 13.5px; }
.footer-ecosystem { margin-top: 18px; font-size: 12px; color: #9aa0a3; font-family: 'Montserrat', sans-serif; letter-spacing: 0.3px; }
.footer-ecosystem a { color: #d8dadb; }

.footer-base {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  font-size: 12.5px;
  color: #9aa0a3;
  flex-wrap: wrap;
  gap: 14px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 32px; height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid #4a5051;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
}
.footer-social a:hover { background: var(--brand-red); border-color: var(--brand-red); color: #fff; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1080px) {
  .hero-container { flex-direction: column; gap: 50px; }
  .hero-right { width: 100%; max-width: 480px; }
  /* .grid-* use flex (not grid) so we resize via flex-basis on the children
     instead of grid-template-columns. At this breakpoint .grid-4 wraps to
     two-up; .grid-3 already wraps naturally via its basis. */
  .grid-4 > * { flex: 1 1 calc((100% - 22px) / 2); max-width: calc((100% - 22px) / 2); }
}

@media (max-width: 880px) {
  .ecosystem-bar-inner { padding: 9px 24px; gap: 14px; font-size: 11.5px; }
  .navbar { padding: 14px 24px; }
  .nav-links { display: none; }
  .nav-actions .btn-ghost { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: #fff;
    padding: 24px;
    gap: 18px;
    border-bottom: 2px solid var(--brand-red);
    box-shadow: 0 14px 24px rgba(0,0,0,0.08);
  }
  .breadcrumb { padding: 16px 24px 0; }

  section { padding: 70px 24px; }
  .hero { padding: 70px 24px 100px; min-height: 0; }
  .hero-title { font-size: 40px; line-height: 1.12; letter-spacing: -0.6px; }
  .hero-logo { width: 76px; height: 76px; margin-bottom: 18px; }
  .hero-crest { max-width: 320px; }
  .hero-desc { font-size: 16.5px; }
  .hero-creds { font-size: 12px; gap: 16px 18px; }
  .footer-brand .brand-mark { height: 72px; width: 72px; }
  .section-title { font-size: 28px; }

  /* .grid-* use flex — stack to one column on mobile via flex-basis. */
  .grid-2 > *, .grid-3 > *, .grid-4 > * { flex: 1 1 100%; max-width: 100%; }

  .feature-row { grid-template-columns: 1fr; gap: 30px; }
  .feature-row.reverse > :first-child { order: 0; }

  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .stat { border-left: none; border-top: 1px solid var(--line); padding-top: 18px; }

  .callout { flex-direction: column; align-items: flex-start; padding: 36px 28px; }

  footer.site-footer { padding: 50px 24px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }

  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .stat-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 30px; }
  .prose h1 { font-size: 28px; }
  .prose h2 { font-size: 22px; }
}

/* =========================================================
   FOCUS / REDUCED MOTION
   ========================================================= */
:focus-visible {
  outline: 2px solid var(--brand-red);
  outline-offset: 2px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* =========================================================
   PHASE 3: SVG DIAGRAM PRIMITIVES
   Reusable diagram components for DESFire / SAM / transit pages.
   All inline SVG; brand palette via CSS vars.
   ========================================================= */

.diagram {
  margin: 30px auto;
  max-width: 1100px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px 24px;
  position: relative;
}
.diagram.alt { background: var(--brand-soft); }
.diagram-caption {
  text-align: center;
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  letter-spacing: 0.6px;
  color: var(--muted-2);
  margin-top: 16px;
  text-transform: uppercase;
  font-weight: 600;
}
.diagram svg { width: 100%; height: auto; display: block; }
.diagram svg text { font-family: 'Source Sans 3', sans-serif; font-size: 12px; fill: var(--ink); }
.diagram svg .lbl-mono { font-family: 'JetBrains Mono', monospace; font-size: 11px; fill: var(--brand-dark); }
.diagram svg .lbl-tag {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  fill: var(--brand-dark);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 700;
}
.diagram svg .lbl-note {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 11px;
  fill: var(--brand-grey);
  font-style: italic;
}
.diagram svg .arrow { stroke: var(--brand-dark); stroke-width: 1.5; fill: none; marker-end: url(#arrow-head); }
.diagram svg .arrow-red { stroke: var(--brand-red); stroke-width: 1.8; fill: none; marker-end: url(#arrow-head-red); }
.diagram svg .arrow-cyan { stroke: var(--secure-cyan); stroke-width: 1.8; fill: none; marker-end: url(#arrow-head-cyan); }
.diagram svg .arrow-dashed { stroke-dasharray: 4 3; }
.diagram svg .actor-box { fill: #fff; stroke: var(--brand-dark); stroke-width: 1.5; rx: 4; }
.diagram svg .actor-box.accent { fill: rgba(227,34,42,0.06); stroke: var(--brand-red); }
.diagram svg .actor-box.cyan { fill: var(--secure-cyan-soft); stroke: var(--secure-cyan); }
.diagram svg .actor-line { stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 4; }
.diagram svg .layer { stroke: var(--brand-dark); stroke-width: 1.5; rx: 4; }
.diagram svg .layer.l1 { fill: #fff; }
.diagram svg .layer.l2 { fill: var(--brand-soft); }
.diagram svg .layer.l3 { fill: var(--secure-cyan-soft); stroke: var(--secure-cyan); }
.diagram svg .layer.root { fill: var(--brand-dark); }
.diagram svg .layer.root text { fill: #fff; }
.diagram svg .key { fill: var(--brand-red); }
.diagram svg .key-soft { fill: rgba(227,34,42,0.10); stroke: var(--brand-red); rx: 3; }
.diagram svg .trust-zone {
  fill: rgba(14,140,156,0.05);
  stroke: var(--secure-cyan);
  stroke-width: 1.2;
  stroke-dasharray: 6 4;
  rx: 6;
}
.diagram svg .trust-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  fill: var(--secure-cyan-dark);
  letter-spacing: 0.6px;
  text-transform: uppercase;
  font-weight: 700;
}

@media (max-width: 880px) {
  .diagram { padding: 18px 12px; margin: 24px 0; }
}

/* Inline architecture-cards row used inside detail pages */
.arch-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.arch-row .arch-cell {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px 18px;
  position: relative;
}
.arch-row .arch-cell.accent { border-left: 3px solid var(--brand-red); }
.arch-row .arch-cell.cyan   { border-left: 3px solid var(--secure-cyan); }
.arch-row .arch-cell .arch-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.6px;
  color: var(--muted-2);
  display: block;
  margin-bottom: 4px;
}
.arch-row .arch-cell h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 13.5px;
  color: var(--ink);
  font-weight: 700;
  margin: 0 0 6px;
}
.arch-row .arch-cell p {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 13px;
  color: var(--brand-grey);
  line-height: 1.55;
  margin: 0;
}

/* APDU step list — used in flow blog posts */
.apdu-flow {
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 6px;
  padding: 18px 22px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.7;
  margin: 18px 0 22px;
  overflow-x: auto;
}
.apdu-flow .step { color: #b0b3b8; display: block; margin-top: 8px; }
.apdu-flow .step:first-child { margin-top: 0; }
.apdu-flow .arrow-out { color: var(--brand-red); }
.apdu-flow .arrow-in { color: var(--secure-cyan); }
.apdu-flow .cmt { color: #6c7179; font-style: italic; }

/* =========================================================
   PHASE 4: DOCUMENTATION PORTAL PRIMITIVES
   Reusable layout shell for /docs-style pages (left nav, TOC,
   versioned content, copy-able code blocks). Used today on
   /resources/webauthn/, planned for docs.ambimat.com lift-out.
   ========================================================= */

.docs-shell {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 30px 60px 60px;
  display: grid;
  grid-template-columns: 240px 1fr 220px;
  gap: 40px;
  align-items: start;
}
.docs-shell.no-toc { grid-template-columns: 240px 1fr; }
.docs-shell.no-nav { grid-template-columns: 1fr 220px; padding-left: 80px; }

.docs-nav {
  position: sticky;
  top: 80px;
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  border-right: 1px solid var(--line);
  padding-right: 18px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}
.docs-nav h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  color: var(--brand-dark);
  margin: 18px 0 8px;
  font-weight: 700;
}
.docs-nav h4:first-child { margin-top: 0; }
.docs-nav ul { list-style: none; padding: 0; margin: 0; }
.docs-nav li { margin-bottom: 4px; }
.docs-nav a {
  display: block;
  padding: 6px 10px;
  color: var(--brand-grey);
  text-decoration: none;
  border-radius: 3px;
  font-weight: 500;
  border-left: 2px solid transparent;
}
.docs-nav a:hover { color: var(--brand-red); background: var(--brand-soft); }
.docs-nav a.active { color: var(--brand-red); border-left-color: var(--brand-red); background: rgba(227,34,42,0.04); }

.docs-toc {
  position: sticky;
  top: 80px;
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  border-left: 1px solid var(--line);
  padding-left: 18px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}
.docs-toc h4 {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  color: var(--brand-dark);
  margin-bottom: 10px;
  font-weight: 700;
}
.docs-toc ul { list-style: none; padding: 0; margin: 0; }
.docs-toc li { margin-bottom: 6px; line-height: 1.4; }
.docs-toc li.l3 { padding-left: 12px; }
.docs-toc a {
  color: var(--brand-grey);
  text-decoration: none;
  font-size: 12.5px;
  font-weight: 500;
}
.docs-toc a:hover { color: var(--brand-red); }

.docs-content {
  min-width: 0;
  font-family: 'Source Sans 3', sans-serif;
  color: var(--ink);
  line-height: 1.7;
}
.docs-content > h1:first-child { margin-top: 0; }
.docs-content h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: 36px;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.6px;
  color: var(--ink);
  margin: 6px 0 16px;
}
.docs-content h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 50px 0 14px;
  color: var(--ink);
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.docs-content h2:first-of-type { border-top: none; padding-top: 0; margin-top: 30px; }
.docs-content h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 18px;
  font-weight: 700;
  margin: 30px 0 10px;
  color: var(--ink);
}
.docs-content h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 14.5px;
  font-weight: 700;
  margin: 22px 0 8px;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.docs-content p { font-size: 16px; line-height: 1.75; margin-bottom: 14px; color: var(--brand-grey); }
.docs-content ul, .docs-content ol { margin: 8px 0 18px 22px; }
.docs-content li { font-size: 16px; line-height: 1.75; margin-bottom: 6px; color: var(--brand-grey); }
.docs-content strong { color: var(--ink); font-weight: 700; }
.docs-content a { color: var(--brand-red); text-decoration: underline; text-underline-offset: 3px; font-weight: 500; }
.docs-content a:hover { color: var(--brand-red-dark); }

.docs-content .anchor-link {
  margin-left: 8px;
  color: var(--muted-2);
  text-decoration: none;
  opacity: 0;
  font-weight: 400;
  font-size: 0.7em;
  transition: opacity .15s ease;
}
.docs-content h1:hover .anchor-link,
.docs-content h2:hover .anchor-link,
.docs-content h3:hover .anchor-link,
.docs-content h4:hover .anchor-link { opacity: 1; }

/* docs-style code block with copy */
.code-block {
  position: relative;
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 6px;
  margin: 18px 0 22px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.65;
  border: 1px solid #2a2d33;
  overflow: hidden;
}
.code-block-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: #1c1f24;
  border-bottom: 1px solid #2a2d33;
  font-size: 11.5px;
  letter-spacing: 0.4px;
  color: #aab0b8;
  font-family: 'Montserrat', sans-serif;
  text-transform: uppercase;
  font-weight: 600;
}
.code-block pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: inherit;
  font-size: 13px;
  background: transparent;
  color: var(--code-fg);
  line-height: 1.65;
}
.code-block .copy-code {
  background: transparent;
  border: 1px solid #3b4047;
  color: #b0b6bd;
  font-family: 'Montserrat', sans-serif;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.4px;
  padding: 4px 10px;
  border-radius: 3px;
  cursor: pointer;
  text-transform: uppercase;
}
.code-block .copy-code:hover { color: #fff; border-color: #5b626a; }
.code-block pre .k { color: #FF8A8A; }
.code-block pre .s { color: #93D2A4; }
.code-block pre .n { color: #FFC07A; }
.code-block pre .c { color: var(--code-comment); font-style: italic; }
.code-block pre .p { color: #6FCEDB; }

/* docs version banner */
.version-banner {
  background: var(--secure-cyan-soft);
  border: 1px solid #bfe1e6;
  border-left: 3px solid var(--secure-cyan);
  padding: 10px 16px;
  margin: 14px 0 28px;
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  color: var(--secure-cyan-dark);
  border-radius: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}
.version-banner .vb-tag {
  background: var(--secure-cyan);
  color: #fff;
  font-size: 10.5px;
  letter-spacing: 0.4px;
  padding: 3px 8px;
  border-radius: 3px;
  font-weight: 700;
  text-transform: uppercase;
}
.version-banner .vb-meta { color: var(--brand-grey); font-weight: 500; font-size: 12.5px; }

/* expandable reference block */
.ref-block {
  border: 1px solid var(--line);
  border-radius: 6px;
  margin: 18px 0;
  background: #fff;
}
.ref-block summary {
  padding: 12px 16px;
  cursor: pointer;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 14px;
  color: var(--brand-dark);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 6px;
}
.ref-block summary::-webkit-details-marker { display: none; }
.ref-block summary::after {
  content: '+';
  font-size: 18px;
  color: var(--brand-grey);
  margin-left: 12px;
}
.ref-block[open] summary::after { content: '\2212'; }
.ref-block summary:hover { color: var(--brand-red); }
.ref-block .ref-body { padding: 0 16px 16px; font-size: 14.5px; color: var(--brand-grey); line-height: 1.65; }
.ref-block .ref-body p { color: var(--brand-grey); }

/* docs sequence-flow utility (used inline in docs) */
.seq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin: 20px 0;
}
.seq-grid .seq-step {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--secure-cyan);
  padding: 12px 14px;
  border-radius: 4px;
}
.seq-grid .seq-step .seq-n {
  font-family: 'Montserrat', sans-serif;
  font-size: 10.5px;
  letter-spacing: 0.4px;
  color: var(--secure-cyan-dark);
  font-weight: 700;
  text-transform: uppercase;
}
.seq-grid .seq-step .seq-h {
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin: 4px 0 6px;
}
.seq-grid .seq-step p {
  font-size: 13px;
  color: var(--brand-grey);
  margin: 0;
  line-height: 1.55;
}

/* annotated JSON / CBOR block (for protocol struct illustration) */
.annot-struct {
  font-family: 'JetBrains Mono', monospace;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px 20px;
  font-size: 13px;
  line-height: 1.7;
  margin: 16px 0;
  color: var(--ink);
  overflow-x: auto;
}
.annot-struct .as-key { color: var(--brand-red-dark); font-weight: 600; }
.annot-struct .as-str { color: #2E8B4F; }
.annot-struct .as-num { color: #C77A00; }
.annot-struct .as-cmt {
  color: var(--brand-grey);
  font-family: 'Source Sans 3', sans-serif;
  font-style: italic;
  font-size: 12.5px;
  margin-left: 8px;
}
.annot-struct .as-tag {
  display: inline-block;
  background: var(--secure-cyan-soft);
  color: var(--secure-cyan-dark);
  font-size: 10.5px;
  letter-spacing: 0.4px;
  padding: 1px 6px;
  border-radius: 2px;
  margin-left: 6px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  vertical-align: middle;
}

/* Phase 4: passkey flow visualizer (CSS-only state diagram) */
.flow-viz {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 24px 0;
}
.flow-viz .fv-actor {
  background: #fff;
  border: 1.5px solid var(--brand-dark);
  border-radius: 6px;
  padding: 14px 16px;
  text-align: center;
}
.flow-viz .fv-actor.cyan { border-color: var(--secure-cyan); background: var(--secure-cyan-soft); }
.flow-viz .fv-actor.red { border-color: var(--brand-red); background: rgba(227,34,42,0.05); }
.flow-viz .fv-actor h5 {
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.flow-viz .fv-actor .fv-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--muted-2);
  margin-bottom: 6px;
}
.flow-viz .fv-actor p {
  font-size: 12.5px;
  color: var(--brand-grey);
  margin: 0;
  line-height: 1.5;
}

/* Responsive docs */
@media (max-width: 1080px) {
  .docs-shell { grid-template-columns: 200px 1fr; gap: 28px; padding: 24px 32px 50px; }
  .docs-toc { display: none; }
}
@media (max-width: 720px) {
  .docs-shell { grid-template-columns: 1fr; gap: 16px; padding: 18px 18px 40px; }
  .docs-nav {
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 0 0 14px;
    max-height: none;
  }
  .flow-viz { grid-template-columns: 1fr; }
}

/* Phase 4 visual: passkey-card / fido-card landing-page tiles.
   Phase 21: flex-wrap with centred last row, hard-capped at 4 per row. */
.fido-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  gap: 18px;
  margin: 24px 0;
}
.fido-grid > * {
  flex: 1 1 calc((100% - 54px) / 4);
  max-width: calc((100% - 54px) / 4);
  min-width: 220px;
}
@media (max-width: 720px) {
  .fido-grid > * { flex: 1 1 100%; max-width: 100%; }
}
.fido-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px 20px;
}
.fido-card .fc-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.5px;
  color: var(--secure-cyan-dark);
  background: var(--secure-cyan-soft);
  padding: 2px 7px;
  border-radius: 3px;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 8px;
}
.fido-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}
.fido-card p { font-size: 13.5px; color: var(--brand-grey); margin: 0; line-height: 1.55; }
.fido-card ul { margin: 8px 0 0 18px; padding: 0; }
.fido-card li { font-size: 13px; color: var(--brand-grey); line-height: 1.55; }

/* =========================================================
   PHASE 5: SEARCHABLE REFERENCE SYSTEM
   Used on /references/ and /references/<slug>/.
   ========================================================= */

.ref-shell {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 30px 80px 60px;
}

.ref-search-bar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px 18px;
  margin-bottom: 24px;
}
.ref-search-bar input[type="search"],
.ref-search-bar input[type="text"] {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 14.5px;
  color: var(--ink);
  padding: 6px 0;
}
.ref-search-bar input[type="search"]::placeholder,
.ref-search-bar input[type="text"]::placeholder { color: var(--muted-2); }
.ref-search-bar select {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 10px;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 13px;
  background: #fff;
  color: var(--brand-dark);
  cursor: pointer;
}
.ref-search-bar .ref-count {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--brand-grey);
  white-space: nowrap;
}

.ref-table-wrap {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 13.5px;
}
.ref-table thead {
  background: var(--brand-soft);
  position: sticky;
  top: 0;
}
.ref-table th {
  text-align: left;
  padding: 12px 16px;
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--brand-dark);
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}
.ref-table td {
  padding: 11px 16px;
  border-bottom: 1px dashed var(--line);
  vertical-align: top;
  color: var(--ink);
}
.ref-table tbody tr:last-child td { border-bottom: none; }
.ref-table tbody tr:hover { background: var(--brand-soft); }
.ref-table tbody tr.ref-row-anchored { background: rgba(227,34,42,0.04); }
.ref-table .ref-key {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: var(--brand-red-dark);
  white-space: nowrap;
}
.ref-table .ref-meta {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  letter-spacing: 0.3px;
  color: var(--muted-2);
  text-transform: uppercase;
}
.ref-table .ref-detail { color: var(--brand-grey); font-size: 12.5px; line-height: 1.55; }
.ref-table .ref-anchor-link {
  color: var(--muted-2);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  margin-left: 6px;
  opacity: 0;
  transition: opacity 0.15s;
}
.ref-table tbody tr:hover .ref-anchor-link { opacity: 1; }
.ref-table .ref-copy-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--brand-grey);
  font-family: 'Montserrat', sans-serif;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  padding: 3px 8px;
  border-radius: 3px;
  cursor: pointer;
  text-transform: uppercase;
}
.ref-table .ref-copy-btn:hover { color: var(--brand-red); border-color: var(--brand-red); }

.ref-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted-2);
  font-family: 'Source Sans 3', sans-serif;
  font-size: 14px;
  font-style: italic;
}

.ref-tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}
.ref-tag-filter button {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--brand-grey);
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.15s;
}
.ref-tag-filter button:hover { color: var(--brand-red); border-color: var(--brand-red); }
.ref-tag-filter button.active { color: #fff; background: var(--brand-red); border-color: var(--brand-red); }

/* References landing page */
/* Phase 21: flex-wrap, max 3 columns, centred last row. */
.ref-grid-landing {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  gap: 18px;
  margin: 24px 0;
}
.ref-grid-landing > * {
  flex: 1 1 calc((100% - 36px) / 3);
  max-width: calc((100% - 36px) / 3);
  min-width: 260px;
}
@media (max-width: 720px) {
  .ref-grid-landing > * { flex: 1 1 100%; max-width: 100%; }
}
.ref-landing-card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 20px 22px;
  border-radius: 6px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.2s;
}
.ref-landing-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(58,63,64,0.08);
  border-color: #d8d8da;
}
.ref-landing-card .rl-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.5px;
  color: var(--secure-cyan-dark);
  background: var(--secure-cyan-soft);
  padding: 3px 8px;
  border-radius: 3px;
  display: inline-block;
  margin-bottom: 10px;
  font-weight: 600;
}
.ref-landing-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ink);
}
.ref-landing-card p { font-size: 13.5px; color: var(--brand-grey); margin: 0; line-height: 1.55; }
.ref-landing-card .rl-count {
  margin-top: 10px;
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--brand-red);
  font-weight: 600;
}

/* Featured tools / start-here strip (Phase 5 site-wide UX) */
.featured-strip {
  background: var(--brand-soft);
  padding: 36px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.featured-strip-inner {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 0 80px;
}
.featured-strip h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--brand-dark);
  margin-bottom: 16px;
  font-weight: 700;
}
.featured-strip-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.featured-strip-row a {
  background: #fff;
  border: 1px solid var(--line);
  padding: 14px 16px;
  border-radius: 4px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.15s;
}
.featured-strip-row a:hover { border-color: var(--brand-red); transform: translateY(-1px); }
.featured-strip-row .fs-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.4px;
  color: var(--secure-cyan-dark);
  background: var(--secure-cyan-soft);
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 600;
  flex-shrink: 0;
}
.featured-strip-row .fs-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

/* Start Here band */
.start-here {
  background: linear-gradient(180deg, #fff, var(--brand-soft));
  padding: 60px 0;
}
.start-here-inner {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 0 80px;
}
.start-here h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.4px;
  margin-bottom: 8px;
}
.start-here .sh-dek {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 16px;
  color: var(--brand-grey);
  max-width: 720px;
  margin-bottom: 28px;
  line-height: 1.65;
}
.start-here-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.sh-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px 24px;
  text-decoration: none;
  display: block;
  position: relative;
  overflow: hidden;
}
.sh-card:hover { border-color: var(--brand-red); }
.sh-card .sh-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.4px;
  color: var(--brand-red);
  font-weight: 700;
  margin-bottom: 10px;
}
.sh-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: -0.2px;
}
.sh-card p { font-size: 13.5px; color: var(--brand-grey); margin: 0 0 12px; line-height: 1.55; }
.sh-card .sh-go {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-red);
  letter-spacing: 0.3px;
}

/* Procurement-friendly comparison table */
.proc-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 14px;
}
.proc-table thead { background: var(--brand-dark); }
.proc-table th {
  text-align: left;
  padding: 14px 18px;
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: #fff;
  font-weight: 700;
}
.proc-table td {
  padding: 12px 18px;
  border-bottom: 1px dashed var(--line);
  color: var(--brand-dark);
  vertical-align: top;
}
.proc-table tbody tr:last-child td { border-bottom: none; }
.proc-table tbody tr:nth-child(even) { background: var(--brand-soft); }
.proc-table .pt-yes { color: #2E8B4F; font-weight: 700; }
.proc-table .pt-no { color: var(--brand-red); font-weight: 700; }
.proc-table .pt-feature {
  font-weight: 600;
  color: var(--ink);
  font-family: 'Montserrat', sans-serif;
  font-size: 13.5px;
}

@media (max-width: 880px) {
  .ref-shell { padding: 18px 24px 40px; }
  .ref-search-bar { grid-template-columns: 1fr; }
  .featured-strip-inner { padding: 0 24px; }
  .start-here-inner { padding: 0 24px; }
  .ref-table { font-size: 12.5px; }
  .ref-table th, .ref-table td { padding: 10px 12px; }
  .proc-table { font-size: 13px; }
  .proc-table th, .proc-table td { padding: 10px 12px; }
}

/* =========================================================
   PHASE 9: Video platform
   YouTube facade, video grid, video cards, and inline player.
   ========================================================= */

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
  margin-top: 12px;
}

.video-card {
  background: var(--soft, #F4F5F6);
  border: 1px solid var(--rule, #E1E3E4);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.video-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0,0,0,.06);
  border-color: var(--brand-red, #E3222A);
}

.video-card-body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.video-card-body h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink, #3A3F40);
  margin: 0 0 4px 0;
  line-height: 1.35;
}
.video-card-meta {
  display: flex;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--brand-grey, #616A6C);
  letter-spacing: .3px;
  text-transform: uppercase;
}
.video-card-desc {
  font-size: 14px;
  color: var(--brand-grey, #616A6C);
  line-height: 1.6;
  margin: 0;
}
.video-card-cta {
  font-size: 13px;
  color: var(--brand-red, #E3222A);
  font-weight: 600;
  text-decoration: none;
  margin-top: 6px;
}
.video-card-cta:hover { text-decoration: underline; }

/* YouTube facade (click-to-play) */
.yt-facade {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  background: #000;
  overflow: hidden;
  cursor: pointer;
}
.yt-facade-poster {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity .2s ease, transform .25s ease;
}
.yt-facade:hover .yt-facade-poster {
  opacity: .85;
  transform: scale(1.02);
}
.yt-facade-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(227, 34, 42, 0.92);
  color: white;
  border: 0;
  font-size: 24px;
  line-height: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 6px;
  transition: background .2s ease, transform .2s ease;
}
.yt-facade-play:hover {
  background: rgba(227, 34, 42, 1);
  transform: translate(-50%, -50%) scale(1.08);
}
.yt-facade-play:focus-visible {
  outline: 3px solid white;
  outline-offset: 2px;
}

/* Self-hosted inline video */
.video-self-hosted {
  width: 100%;
  height: auto;
  display: block;
  background: #000;
}

/* Video group header (used on /videos/ landing) */
.video-group {
  margin-top: 48px;
}
.video-group:first-of-type { margin-top: 12px; }
.video-group-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 18px;
}
.video-group-header h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink, #3A3F40);
  margin: 0;
}
.video-group-header .count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--brand-grey, #616A6C);
  letter-spacing: .4px;
}

@media (max-width: 720px) {
  .video-grid { grid-template-columns: 1fr; gap: 20px; }
  .video-group-header h2 { font-size: 19px; }
  .yt-facade-play { width: 56px; height: 56px; font-size: 20px; }
}

/* =========================================================
   PHASE 9: Pillars row on home page
   ========================================================= */
.pillars-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 22px;
}
.pillars-grid > .pillar-card {
  flex: 1 1 calc((100% - 42px) / 4);
  max-width: calc((100% - 42px) / 4);
  min-width: 220px;
}
@media (max-width: 880px) {
  .pillars-grid > .pillar-card {
    flex: 1 1 calc((100% - 14px) / 2);
    max-width: calc((100% - 14px) / 2);
  }
}
@media (max-width: 540px) {
  .pillars-grid > .pillar-card {
    flex: 1 1 100%;
    max-width: 100%;
  }
}
.pillar-card {
  background: white;
  border: 1px solid var(--rule, #E1E3E4);
  border-left: 4px solid var(--brand-red, #E3222A);
  border-radius: 6px;
  padding: 16px 18px;
  text-decoration: none;
  color: var(--ink, #3A3F40);
  transition: border-color .2s ease, transform .2s ease;
}
.pillar-card:hover {
  transform: translateY(-2px);
  border-left-color: var(--secure-cyan, #0E8C9C);
}
.pillar-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 4px 0;
}
.pillar-card p {
  font-size: 13px;
  color: var(--brand-grey, #616A6C);
  line-height: 1.55;
  margin: 0;
}

/* ===== Phase 10 — Brochures ===== */
.brochure-page {
  max-width: 1100px;
  margin: 0 auto;
}
.brochure-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--rule, #E1E3E4);
  padding-bottom: 14px;
  margin-bottom: 22px;
}
.brochure-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  font-size: 12px;
}
.brochure-print a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--brand-grey, #616A6C);
  text-decoration: none;
  border: 1px solid var(--rule, #E1E3E4);
  padding: 5px 10px;
  border-radius: 4px;
}
.brochure-print a:hover {
  color: var(--brand-red, #E3222A);
  border-color: var(--brand-red, #E3222A);
}
.brochure-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 30px;
  line-height: 1.2;
  margin: 8px 0 14px 0;
}
.brochure-dek {
  font-size: 16px;
  line-height: 1.6;
  color: var(--brand-grey, #616A6C);
  max-width: 900px;
}
section.brochure {
  padding-top: 0;
}
.brochure-body {
  max-width: 1100px;
  padding-top: 10px;
  padding-bottom: 40px;
}
.brochure-section {
  padding: 18px 0 22px;
  border-bottom: 1px dashed var(--rule, #E1E3E4);
}
.brochure-section:last-child {
  border-bottom: none;
}
.brochure-section h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 12px 0;
  color: var(--brand-dark, #3A3F40);
}
.brochure-section ul, .brochure-section ol {
  margin: 0 0 6px 0;
  padding-left: 22px;
}
.brochure-section li {
  margin-bottom: 6px;
  line-height: 1.55;
}
.brochure-section table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.brochure-section table th,
.brochure-section table td {
  text-align: left;
  border-bottom: 1px solid var(--rule, #E1E3E4);
  padding: 8px 10px;
  vertical-align: top;
}
.brochure-section table th {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  background: #FAFAFA;
}
.brochure-cta {
  background: #FAFAFA;
  padding: 18px 20px;
  border-radius: 6px;
  border-bottom: none;
}

/* Print: collapse navigation, ecosystem bar, footer; flatten section padding. */
@media print {
  .ecosystem-bar,
  .navbar,
  .breadcrumb,
  .skip-link,
  .site-footer,
  .brochure-print {
    display: none !important;
  }
  body {
    color: #000;
    background: #fff;
    font-size: 11pt;
  }
  section.brochure {
    padding: 0 !important;
  }
  .brochure-body {
    padding: 0 !important;
  }
  .brochure-head {
    border-bottom: 2px solid #000;
  }
  .brochure-title {
    font-size: 24pt;
  }
  .brochure-section {
    page-break-inside: avoid;
  }
  a {
    color: #000;
    text-decoration: none;
  }
  a[href^="/"]::after,
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 9pt;
    color: #555;
  }
}

/* ===== Phase 11 — Search, tags, analytics prefs ===== */

/* Visually-hidden util for accessible labels */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Search */
.search-shell {
  max-width: 720px;
  margin: 0 auto 16px;
}
.search-shell input[type="search"] {
  width: 100%;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 16px;
  padding: 14px 18px;
  border: 1.5px solid var(--rule, #E1E3E4);
  border-radius: 6px;
  outline: none;
  background: white;
  transition: border-color .2s ease;
}
.search-shell input[type="search"]:focus {
  border-color: var(--secure-cyan, #0E8C9C);
}
.search-hint {
  font-size: 13px;
  color: var(--brand-grey, #616A6C);
  margin: 10px 0 0;
}
.blog-search-results {
  list-style: none;
  padding: 0;
  margin: 30px auto 0;
  max-width: 900px;
  display: grid;
  gap: 16px;
}
.blog-search-hit {
  background: white;
  border: 1px solid var(--rule, #E1E3E4);
  border-left: 4px solid var(--brand-red, #E3222A);
  border-radius: 6px;
  padding: 16px 20px;
  transition: border-color .2s ease;
}
.blog-search-hit:hover {
  border-left-color: var(--secure-cyan, #0E8C9C);
}
.blog-search-hit-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--brand-grey, #616A6C);
  margin-bottom: 4px;
}
.blog-search-hit-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--brand-dark, #3A3F40);
  text-decoration: none;
  display: block;
  margin-bottom: 6px;
}
.blog-search-hit-title:hover {
  color: var(--brand-red, #E3222A);
}
.blog-search-hit-summary {
  color: var(--brand-grey, #616A6C);
  font-size: 14px;
  margin: 0 0 8px 0;
  line-height: 1.55;
}
.blog-search-hit-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.blog-search-hit-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-decoration: none;
  color: var(--brand-grey, #616A6C);
  background: #FAFAFA;
  border: 1px solid var(--rule, #E1E3E4);
  border-radius: 999px;
  padding: 3px 10px;
}
.blog-search-hit-tag:hover {
  color: var(--brand-red, #E3222A);
  border-color: var(--brand-red, #E3222A);
}
.blog-search-empty {
  text-align: center;
  color: var(--brand-grey, #616A6C);
  font-style: italic;
  padding: 24px 0;
}

/* Sitewide search page — grouped results */
.sitewide-search-results {
  list-style: none;
  padding: 0;
  margin: 30px auto 0;
  max-width: 920px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sitewide-search-group {
  margin-top: 14px;
}
.sitewide-search-group:first-child { margin-top: 0; }
.sitewide-search-group-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--brand-red, #E3222A);
  display: inline-block;
  padding: 8px 0 4px;
  border-bottom: 1px solid var(--rule, #E1E3E4);
  width: 100%;
}
.sitewide-search-item a {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--rule, #E1E3E4);
  border-left: 4px solid var(--brand-red, #E3222A);
  border-radius: 6px;
  background: #fff;
  text-decoration: none;
  transition: border-color .15s ease;
}
.sitewide-search-item a:hover {
  border-left-color: var(--secure-cyan, #0E8C9C);
}
.sitewide-search-title {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink, #3A3F40);
  margin-bottom: 4px;
}
.sitewide-search-desc {
  display: block;
  font-size: 13.5px;
  color: var(--brand-grey, #616A6C);
  line-height: 1.55;
}
.sitewide-search-empty {
  list-style: none;
  text-align: center;
  color: var(--brand-grey, #616A6C);
  padding: 24px 0;
  font-size: 14.5px;
}
.sitewide-search-empty strong { color: var(--ink, #3A3F40); }

/* Tag cloud */
.tag-cloud {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.tag-card {
  display: block;
  padding: 14px 16px;
  background: white;
  border: 1px solid var(--rule, #E1E3E4);
  border-left: 4px solid var(--brand-red, #E3222A);
  border-radius: 6px;
  text-decoration: none;
  color: var(--ink, #3A3F40);
  transition: border-color .2s ease, transform .2s ease;
}
.tag-card:hover {
  transform: translateY(-2px);
  border-left-color: var(--secure-cyan, #0E8C9C);
}
.tag-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 2px 0;
}
.tag-card p {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--brand-grey, #616A6C);
  margin: 0;
}

/* Analytics prefs */
.analytics-prefs {
  background: white;
  border: 1px solid var(--rule, #E1E3E4);
  border-radius: 6px;
  padding: 22px 26px;
  max-width: 720px;
}
.analytics-prefs h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px 0;
}
.analytics-prefs-status {
  font-size: 14.5px;
  color: var(--brand-dark, #3A3F40);
  margin: 0 0 8px 0;
}
.analytics-prefs-dnt {
  font-size: 13px;
  color: var(--secure-cyan, #0E8C9C);
  margin: 0 0 12px 0;
}
.analytics-prefs-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.analytics-prefs-row button[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}
.analytics-prefs-note {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--brand-grey, #616A6C);
  margin: 14px 0 0 0;
}

/* ===== Phase 12 — Search groups, popular searches ===== */
.blog-search-group-header {
  list-style: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--secure-cyan, #0E8C9C);
  padding: 18px 4px 6px;
  margin: 8px 0 4px;
  border-bottom: 1px dashed var(--rule, #E1E3E4);
}
.blog-search-meta-section {
  list-style: none;
  padding: 16px 4px;
  margin: 8px 0 0;
}
.blog-search-meta-section h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--brand-grey, #616A6C);
  margin: 0 0 10px 0;
}
.blog-search-popular {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.blog-search-popular-link {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-decoration: none;
  color: var(--brand-dark, #3A3F40);
  background: white;
  border: 1px solid var(--rule, #E1E3E4);
  border-radius: 999px;
  padding: 5px 14px;
}
.blog-search-popular-link:hover {
  color: var(--brand-red, #E3222A);
  border-color: var(--brand-red, #E3222A);
}

/* Phase 18 — informational "Coming soon" tiles that look like cards but
   are deliberately non-clickable. Applies to both .card and .resource-card. */
.card.soon-tile,
.resource-card.soon-tile {
  cursor: default;
  opacity: 0.75;
}
.card.soon-tile:hover,
.resource-card.soon-tile:hover {
  transform: none;
  box-shadow: none;
}

/* =========================================================
   PHASE 20 — IN-PAGE TABLE OF CONTENTS FOR LONG-FORM BLOGS
   ========================================================= */
.blog-toc {
  display: none;
}
@media (min-width: 1180px) {
  .blog-toc {
    display: block;
    position: fixed;
    top: 110px;
    right: max(16px, calc((100vw - 1100px) / 2 - 240px));
    width: 220px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    font-family: 'Source Sans 3', sans-serif;
    font-size: 13px;
    z-index: 5;
  }
}
.blog-toc-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--brand-dark, #3A3F40);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line, #E1E3E4);
}
.blog-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.blog-toc-item {
  margin: 0;
  padding: 0;
  line-height: 1.45;
}
.blog-toc-item a {
  display: block;
  padding: 5px 10px;
  color: var(--brand-grey, #616A6C);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.blog-toc-item.lvl-h3 a {
  padding-left: 22px;
  font-size: 12.5px;
}
.blog-toc-item a:hover {
  color: var(--ink, #3A3F40);
  border-left-color: var(--brand-grey, #B0B4B6);
}
.blog-toc-item a.is-current {
  color: var(--brand-red, #E3222A);
  border-left-color: var(--brand-red, #E3222A);
  font-weight: 600;
}

/* =========================================================
   PHASE 21 — SITE-WIDE SEARCH (command-palette)
   ========================================================= */
.as-search {
  position: fixed; inset: 0;
  z-index: 1000;
  display: none;
}
.as-search.is-open { display: block; }
body.as-search-open { overflow: hidden; }
.as-search-backdrop {
  position: absolute; inset: 0;
  background: rgba(20,22,23,0.50);
  backdrop-filter: blur(6px) saturate(140%);
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  animation: as-fade-in .15s ease-out;
}
@keyframes as-fade-in { from { opacity: 0 } to { opacity: 1 } }
@keyframes as-rise    { from { opacity: 0; transform: translateY(-6px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }

.as-search-panel {
  position: relative;
  margin: 11vh auto 0;
  width: min(640px, calc(100vw - 32px));
  background: #fff;
  border-radius: 14px;
  border: 1px solid rgba(58,63,64,0.06);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.7) inset,
    0 20px 56px rgba(20,22,23,0.22),
    0 4px 14px rgba(20,22,23,0.10);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: 72vh;
  animation: as-rise .18s cubic-bezier(.16,.84,.44,1);
}
.as-search-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line, #E1E3E4);
}
.as-search-input-icon {
  color: var(--brand-grey, #8C9092);
  display: inline-flex;
}
.as-search-input {
  flex: 1;
  border: 0;
  outline: 0;
  font-family: 'Montserrat', 'Source Sans 3', sans-serif;
  font-size: 16px;
  letter-spacing: -0.1px;
  color: var(--ink, #3A3F40);
  background: transparent;
  min-width: 0;
}
.as-search-input::placeholder {
  color: var(--brand-grey, #8C9092);
  font-weight: 500;
}
.as-search-input::-webkit-search-cancel-button { display: none; }
.as-search-kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  background: var(--brand-soft, #F4F5F6);
  padding: 3px 7px;
  border-radius: 4px;
  color: var(--brand-grey, #616A6C);
  border: 1px solid var(--line, #E1E3E4);
  text-transform: lowercase;
  letter-spacing: 0.3px;
}

.as-search-results {
  margin: 0;
  padding: 6px 0 8px;
  overflow-y: auto;
  flex: 1;
  scrollbar-width: thin;
}
.as-search-results::-webkit-scrollbar { width: 10px; }
.as-search-results::-webkit-scrollbar-thumb { background: #D8DADC; border-radius: 6px; border: 2px solid #fff; }

.as-search-group {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--brand-grey, #8C9092);
  padding: 14px 18px 6px;
}
.as-search-group + .as-search-item { margin-top: 0; }

.as-search-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px 9px 14px;
  margin: 0 6px;
  text-decoration: none;
  color: var(--ink, #3A3F40);
  border-radius: 8px;
  border: 1px solid transparent;
  transition: background .12s ease, border-color .12s ease;
  cursor: pointer;
}
.as-search-item:hover,
.as-search-item.is-active {
  background: var(--brand-soft, #F4F5F6);
  border-color: rgba(227,34,42,0.16);
}
.as-search-item.is-active .as-item-arrow { color: var(--brand-red, #E3222A); transform: translateX(2px); }

.as-item-main { flex: 1; min-width: 0; }
.as-item-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.1px;
  color: var(--ink);
  line-height: 1.25;
}
.as-item-title mark {
  background: rgba(227,34,42,0.14);
  color: inherit;
  font-weight: 700;
  padding: 0 2px;
  border-radius: 2px;
}
.as-item-desc {
  font-size: 12.5px;
  color: var(--brand-grey, #616A6C);
  margin-top: 3px;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
.as-item-desc mark { background: rgba(227,34,42,0.10); color: inherit; padding: 0 2px; border-radius: 2px; }
.as-item-url {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  color: #9aa0a3;
  margin-top: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.as-item-arrow {
  color: #C8CACC;
  flex-shrink: 0;
  transition: transform .12s ease, color .12s ease;
}

.as-search-empty {
  padding: 28px 22px;
  color: var(--brand-grey, #616A6C);
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}
.as-search-empty strong { color: var(--ink); font-family: 'Montserrat', sans-serif; display: block; margin-bottom: 4px; }
.as-search-empty span { display: block; font-size: 13px; }

.as-search-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-top: 1px solid var(--line, #E1E3E4);
  background: var(--brand-soft, #F4F5F6);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--brand-grey, #8C9092);
}
.as-search-hints { display: flex; gap: 16px; }
.as-search-hints span { display: inline-flex; align-items: center; gap: 6px; }
.as-search-hints kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  background: #fff;
  border: 1px solid var(--line, #E1E3E4);
  color: var(--brand-dark, #3A3F40);
  padding: 1px 6px;
  border-radius: 3px;
  min-width: 16px;
  text-align: center;
  display: inline-block;
}
.as-search-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--brand-grey, #8C9092);
}

@media (max-width: 720px) {
  .as-search-panel {
    margin: 0;
    width: 100%;
    max-width: 100%;
    min-height: 100%;
    max-height: 100%;
    border-radius: 0;
    border: 0;
  }
  .as-search-hints span:nth-child(2) { display: none; }
}

/* =========================================================
   PHASE 26 — COOKIE CONSENT BANNER (premium refresh)
   ========================================================= */
.as-consent {
  position: fixed;
  left: 20px;
  right: 20px;
  bottom: 20px;
  z-index: 999;
  max-width: 780px;
  margin: 0 auto;
  background: #ffffff;
  border: 1px solid rgba(58, 63, 64, 0.08);
  border-radius: 12px;
  box-shadow:
    0 1px 2px rgba(58, 63, 64, 0.04),
    0 22px 60px rgba(58, 63, 64, 0.18);
  padding: 18px 22px 18px 26px;
  font-family: 'Source Sans 3', sans-serif;
  color: var(--ink, #3A3F40);
  display: none;
  overflow: hidden;
}
/* Subtle red accent strip on the left edge — keeps the banner branded
   without coloring the whole surface. */
.as-consent::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--brand-red, #E3222A);
}
.as-consent.is-open {
  display: block;
  animation: as-consent-rise 220ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
@keyframes as-consent-rise {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .as-consent.is-open { animation: none; }
}
.as-consent-row {
  display: flex;
  gap: 22px;
  align-items: center;
  flex-wrap: wrap;
}
.as-consent-body { flex: 1 1 360px; min-width: 0; }
.as-consent-body h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 5px;
  color: var(--ink);
  letter-spacing: -0.1px;
}
.as-consent-body p {
  font-size: 13.5px;
  color: var(--brand-grey, #616A6C);
  line-height: 1.55;
  margin: 0 0 6px;
}
.as-consent-body a {
  color: var(--brand-red);
  text-decoration: none;
  border-bottom: 1px dotted currentColor;
}
.as-consent-body a:hover { border-bottom-style: solid; }
.as-consent-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
  align-items: center;
}
.as-consent-btn {
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  padding: 10px 16px;
  border-radius: 6px;
  border: 1px solid rgba(58, 63, 64, 0.18);
  background: #ffffff;
  color: var(--ink, #3A3F40);
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .12s ease;
}
.as-consent-btn:hover {
  border-color: var(--ink, #3A3F40);
  background: var(--brand-soft, #F4F5F6);
}
.as-consent-btn:active { transform: translateY(1px); }
.as-consent-btn.is-primary {
  background: var(--brand-red, #E3222A);
  color: #fff;
  border-color: var(--brand-red, #E3222A);
  box-shadow: 0 4px 12px rgba(227, 34, 42, 0.22);
}
.as-consent-btn.is-primary:hover { background: #B8161D; border-color: #B8161D; }
@media (max-width: 640px) {
  .as-consent { left: 12px; right: 12px; bottom: 12px; padding: 16px 18px 16px 22px; }
  .as-consent-row { gap: 14px; }
  .as-consent-actions { width: 100%; }
  .as-consent-btn { flex: 1; padding: 11px 14px; }
}

/* ============================================================
   PHASE 22 — HOMEPAGE ABOUT STRIP (Who / What / Who-helps / How)
   ============================================================ */
.who-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: stretch;
  justify-content: center;
  margin-top: 22px;
}
.who-grid > .who-card {
  flex: 1 1 calc((100% - 60px) / 4);
  max-width: calc((100% - 60px) / 4);
  min-width: 240px;
  background: #fff;
  border: 1px solid var(--rule, #E1E3E4);
  border-radius: 10px;
  padding: 22px 22px 20px;
  box-shadow: 0 1px 2px rgba(58, 63, 64, 0.04);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.who-grid > .who-card:hover {
  border-color: rgba(227, 34, 42, 0.22);
  box-shadow: 0 6px 18px rgba(58, 63, 64, 0.08);
  transform: translateY(-1px);
}
.who-card .who-tag {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--brand-red, #E3222A);
}
.who-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink, #3A3F40);
  margin: 0;
  line-height: 1.3;
  letter-spacing: -0.1px;
}
.who-card p {
  font-size: 14px;
  color: var(--brand-grey, #616A6C);
  line-height: 1.6;
  margin: 0;
}
@media (max-width: 1080px) {
  .who-grid > .who-card { flex: 1 1 calc((100% - 20px) / 2); max-width: calc((100% - 20px) / 2); }
}
@media (max-width: 640px) {
  .who-grid > .who-card { flex: 1 1 100%; max-width: 100%; }
}

/* ============================================================
   PHASE 22 — HOMEPAGE HIGHLIGHT BANNER (rotating carousel)
   ============================================================ */
.hp-banner-slot { min-height: 1px; }
.hp-banner {
  position: relative;
  background: linear-gradient(135deg, #FFFFFF 0%, #F4F5F6 100%);
  border: 1px solid var(--rule, #E1E3E4);
  border-left: 4px solid var(--banner-accent, var(--brand-red, #E3222A));
  border-radius: 10px;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(58, 63, 64, 0.04);
}
.hp-banner-track {
  position: relative;
  display: grid;
  grid-template-rows: 1fr;
}
.hp-banner-slide {
  grid-row: 1 / 2;
  grid-column: 1 / 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 30px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity .35s ease, transform .35s ease, visibility 0s linear .35s;
  border-left: 4px solid var(--banner-accent, var(--brand-red, #E3222A));
  margin-left: -4px;
}
.hp-banner-slide.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity .35s ease, transform .35s ease;
  position: relative;
  z-index: 1;
}
.hp-banner[data-count="1"] .hp-banner-slide {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: none;
}
.hp-banner-body { flex: 1 1 480px; min-width: 0; }
.hp-banner-eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 1.2px;
  color: var(--banner-accent, var(--brand-red, #E3222A));
  text-transform: uppercase;
  margin-bottom: 6px;
}
.hp-banner-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 23px;
  font-weight: 700;
  color: var(--ink, #3A3F40);
  margin: 0 0 8px 0;
  line-height: 1.25;
  letter-spacing: -0.2px;
}
.hp-banner-text {
  margin: 0;
  color: var(--brand-grey, #616A6C);
  font-size: 15px;
  line-height: 1.65;
}
.hp-banner-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.hp-banner-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--rule, #E1E3E4);
  color: var(--ink, #3A3F40);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  box-shadow: 0 1px 2px rgba(58, 63, 64, 0.06);
  transition: border-color .15s ease, color .15s ease, background .15s ease;
  z-index: 2;
}
.hp-banner-nav:hover {
  border-color: var(--banner-accent, var(--brand-red, #E3222A));
  color: var(--banner-accent, var(--brand-red, #E3222A));
}
.hp-banner-prev { left: 10px; }
.hp-banner-next { right: 10px; }
.hp-banner-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}
.hp-banner-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 0;
  padding: 0;
  background: rgba(58, 63, 64, 0.22);
  cursor: pointer;
  transition: background .15s ease, transform .15s ease;
}
.hp-banner-dot:hover { background: rgba(58, 63, 64, 0.45); }
.hp-banner-dot.is-active {
  background: var(--brand-red, #E3222A);
  transform: scale(1.25);
}
@media (max-width: 720px) {
  .hp-banner-slide { padding: 22px 22px 36px; }
  .hp-banner-prev { left: 6px; }
  .hp-banner-next { right: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  .hp-banner-slide { transition: none; }
}

/* ============================================================
   PHASE 30 — HERO RIGHT-SIDE VISUAL (daily rotation)
   Rotates only the visual block on the right of the hero.
   The H1, eyebrow, CTAs, and rest of the page stay stable.
   ============================================================ */
.hero-right[data-hero-visual] {
  flex: 0.95;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-visual {
  --hv-accent: var(--brand-red, #E3222A);
  width: 100%;
  max-width: 540px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}
.hero-visual[data-accent="cyan"]  { --hv-accent: var(--secure-cyan, #0E8C9C); }
.hero-visual[data-accent="dark"]  { --hv-accent: var(--ink, #3A3F40); }
.hero-visual-medallion {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(closest-side, rgba(255, 255, 255, 0) 62%, color-mix(in srgb, var(--hv-accent) 14%, transparent) 68%, transparent 72%),
    radial-gradient(closest-side, rgba(255, 255, 255, 0) 72%, color-mix(in srgb, var(--hv-accent) 6%, transparent) 78%, transparent 84%);
  isolation: isolate;
  transition: background 320ms ease;
}
.hero-visual-medallion::before {
  /* Subtle outer accent ring keyed off the theme color. */
  content: "";
  position: absolute;
  inset: 4%;
  border-radius: 50%;
  border: 1px dashed color-mix(in srgb, var(--hv-accent) 28%, transparent);
  pointer-events: none;
}
.hero-visual-crest {
  width: 86%;
  max-width: 420px;
  height: auto;
  border-radius: 50%;
  filter: drop-shadow(0 18px 44px rgba(58, 63, 64, 0.18));
  position: relative;
  z-index: 1;
}
.hero-visual-badge {
  position: absolute;
  right: 4%;
  bottom: 6%;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #ffffff;
  color: var(--hv-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--hv-accent) 26%, var(--rule, #E1E3E4));
  box-shadow:
    0 1px 2px rgba(58, 63, 64, 0.06),
    0 12px 28px -14px color-mix(in srgb, var(--hv-accent) 60%, transparent);
  z-index: 2;
}
.hero-visual-badge svg { display: block; }
.hero-visual-meta {
  width: 100%;
  max-width: 460px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.hero-visual-eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--brand-grey, #616A6C);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-visual-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--hv-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--hv-accent) 14%, transparent);
}
.hero-visual-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--ink, #3A3F40);
  letter-spacing: -0.2px;
  line-height: 1.25;
}
.hero-visual-caption {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--brand-grey, #616A6C);
  max-width: 44ch;
}
.hero-visual-cta {
  margin-top: 4px;
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--hv-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid color-mix(in srgb, var(--hv-accent) 35%, transparent);
  padding-bottom: 2px;
  transition: color 150ms ease, border-color 150ms ease;
}
.hero-visual-cta:hover {
  color: var(--ink, #3A3F40);
  border-bottom-color: var(--ink, #3A3F40);
}
@media (max-width: 980px) {
  .hero-visual-medallion { max-width: 380px; }
  .hero-visual-badge { width: 50px; height: 50px; }
  .hero-visual-label { font-size: 18px; }
}
@media (max-width: 720px) {
  .hero-right[data-hero-visual] { padding-top: 12px; }
  .hero-visual { gap: 18px; }
  .hero-visual-medallion { max-width: 320px; }
}

/* ============================================================
   PHASE 27 — TELCO / eSIM POSITIONING SECTION (homepage)
   ============================================================ */
.as-telco-section { padding-top: 48px; padding-bottom: 48px; }
.as-telco-card {
  background: linear-gradient(135deg, rgba(14, 140, 156, 0.05) 0%, rgba(58, 63, 64, 0.02) 60%, transparent 100%);
  border: 1px solid var(--rule, #E1E3E4);
  border-left: 4px solid var(--secure-cyan, #0E8C9C);
  border-radius: 12px;
  padding: 34px 36px;
  display: flex;
  gap: 36px;
  align-items: center;
  flex-wrap: wrap;
}
.as-telco-body { flex: 1 1 480px; min-width: 0; }
.as-telco-eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 1.4px;
  color: var(--secure-cyan, #0E8C9C);
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 10px;
}
.as-telco-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 30px;
  font-weight: 700;
  color: var(--ink, #3A3F40);
  margin: 0 0 12px 0;
  line-height: 1.18;
  letter-spacing: -0.5px;
}
.as-telco-desc {
  font-size: 15.5px;
  color: var(--brand-grey, #616A6C);
  line-height: 1.65;
  margin: 0 0 14px 0;
}
.as-telco-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 22px;
  font-size: 13.5px;
  color: var(--ink);
}
.as-telco-points li {
  position: relative;
  padding-left: 18px;
}
.as-telco-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  background: var(--secure-cyan, #0E8C9C);
  border-radius: 50%;
}
.as-telco-ctas {
  flex: 1 1 240px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}
.as-telco-ctas .btn { text-align: center; }
@media (max-width: 880px) {
  .as-telco-card { padding: 26px 22px; gap: 22px; }
  .as-telco-title { font-size: 24px; }
  .as-telco-points { grid-template-columns: 1fr; }
  .as-telco-ctas { flex-direction: row; flex-wrap: wrap; }
  .as-telco-ctas .btn { flex: 1 1 calc(50% - 10px); min-width: 0; }
}