/* ============================================================
   Theme A — Professional Trust
   Light, Stripe/Vercel-style, blue accent, clean grid.
   ============================================================ */

/* === Tokens === */
:root {
  --color-bg: #ffffff;
  --color-bg-subtle: #f8fafc;
  --color-bg-card: #ffffff;
  --color-bg-section: #fafbfc;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-text-subtle: #94a3b8;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-soft: #eff6ff;
  --color-success: #16a34a;
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;
  --color-myth-bg: #fef3c7;
  --color-myth-fg: #92400e;
  --color-basics-bg: #dcfce7;
  --color-basics-fg: #166534;

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --max-width: 1200px;
  --gutter: 24px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 48px rgba(15, 23, 42, 0.12);
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font: inherit; }

/* === Typography === */
h1, h2, h3, h4 { letter-spacing: -0.02em; line-height: 1.15; font-weight: 600; color: var(--color-text); }
h1 { font-size: clamp(36px, 5vw, 56px); letter-spacing: -0.03em; font-weight: 700; line-height: 1.1; }
h2 { font-size: clamp(28px, 3.5vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 24px); }
p { font-size: 16px; color: var(--color-text-muted); }

/* === Layout === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: 96px 0; }
.section--subtle { background: var(--color-bg-section); }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 20px;
  font-size: 15px; font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--color-accent); color: white; }
.btn--primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--secondary { background: var(--color-bg-card); color: var(--color-text); border: 1px solid var(--color-border); }
.btn--secondary:hover { border-color: var(--color-border-strong); }
.btn--lg { padding: 16px 28px; font-size: 16px; }
.link-arrow { color: var(--color-accent); font-weight: 500; font-size: 15px; }
.link-arrow:hover { color: var(--color-accent-hover); }
.link-arrow::after { content: ' →'; display: inline-block; transition: transform 0.15s; }
.link-arrow:hover::after { transform: translateX(2px); }

/* === Header === */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  max-width: var(--max-width); margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex; align-items: center; gap: 40px;
}
.site-header__logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 20px;
  letter-spacing: -0.04em;
  color: var(--color-text);
}
.site-header__logo-mark {
  width: 24px; height: 24px;
  background: linear-gradient(135deg, var(--color-accent), #6366f1);
  border-radius: 6px;
}
.site-nav { display: flex; gap: 28px; flex: 1; }
.site-nav__link {
  color: var(--color-text);
  font-weight: 500; font-size: 15px;
  padding: 6px 0;
  display: inline-flex; align-items: center; gap: 4px;
}
.site-nav__link:hover { color: var(--color-accent); }
.site-nav__user { display: flex; gap: 16px; align-items: center; }

/* Mega menu */
.mega-menu { position: relative; }
.mega-menu__trigger::after {
  content: '';
  width: 6px; height: 6px;
  border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s;
  margin-top: -2px; margin-left: 2px;
}
.mega-menu:hover .mega-menu__trigger::after { transform: rotate(225deg); margin-top: 2px; }
.mega-menu__panel {
  position: absolute; top: calc(100% + 8px); left: -16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 20px;
  min-width: 280px;
  opacity: 0; pointer-events: none; transform: translateY(-4px);
  transition: opacity 0.2s, transform 0.2s;
}
.mega-menu:hover .mega-menu__panel,
.mega-menu:focus-within .mega-menu__panel {
  opacity: 1; pointer-events: auto; transform: translateY(0);
}
.mega-menu__group + .mega-menu__group { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--color-border); }
.mega-menu__group-label {
  font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--color-text-subtle);
  font-weight: 600; margin-bottom: 6px;
}
.mega-menu__link {
  display: block; padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px; color: var(--color-text);
  margin: 0 -10px;
}
.mega-menu__link:hover { background: var(--color-bg-subtle); color: var(--color-accent); }

/* === Hero (home) === */
.hero { padding: 80px var(--gutter) 96px; text-align: center; }
.hero__inner { max-width: 800px; margin: 0 auto; }
.hero h1 { margin-bottom: 24px; }
.hero__sub { font-size: 19px; color: var(--color-text-muted); margin: 0 auto 40px; max-width: 640px; }
.domain-checker {
  display: flex; gap: 8px; max-width: 540px; margin: 0 auto;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 6px;
  box-shadow: var(--shadow-sm);
}
.domain-checker:focus-within { border-color: var(--color-accent); box-shadow: 0 0 0 4px var(--color-accent-soft); }
.domain-checker__input {
  flex: 1; padding: 12px 14px;
  font-size: 16px;
  border: none; outline: none; background: transparent;
  color: var(--color-text);
}
.domain-checker__input::placeholder { color: var(--color-text-subtle); }
.domain-checker__btn {
  padding: 12px 22px;
  background: var(--color-accent); color: white;
  border-radius: var(--radius-sm);
  font-weight: 500; font-size: 15px;
}
.domain-checker__btn:hover { background: var(--color-accent-hover); }
.hero__trust {
  margin-top: 20px;
  font-size: 14px; color: var(--color-text-subtle);
}
.hero__trust-sep { margin: 0 8px; }
.hero__reviews {
  margin-top: 24px; display: inline-flex; gap: 8px; align-items: center;
  font-size: 14px; color: var(--color-text-muted);
}
.hero__reviews-stars { color: #f59e0b; letter-spacing: 1px; }

/* === Section header === */
.section-header { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-header h2 { margin-bottom: 16px; }
.section-header p { font-size: 18px; }

/* === Solutions tiles === */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.solution-tile {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.2s;
  display: block;
}
.solution-tile:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.solution-tile h3 { font-size: 18px; margin-bottom: 8px; }
.solution-tile p { font-size: 15px; line-height: 1.55; }
.solution-tile__arrow { margin-top: 16px; color: var(--color-accent); font-weight: 500; font-size: 14px; }
.solution-tile__arrow::after { content: ' →'; }

/* === Features deep-dive === */
.features-deepdive { display: grid; gap: 80px; }
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center;
}
.feature-row--reverse .feature-row__visual { order: -1; }
.feature-row__content h3 { font-size: 28px; margin-bottom: 16px; }
.feature-row__content p { font-size: 17px; line-height: 1.6; margin-bottom: 20px; }
.feature-row__links { display: flex; gap: 24px; flex-wrap: wrap; }
.feature-row__visual {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--color-bg-section), var(--color-accent-soft));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-subtle); font-size: 14px; font-style: italic;
}

/* === Compare preview / VS-table === */
.compare-table, .vs-table {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare-table table, .vs-table table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td,
.vs-table th, .vs-table td {
  padding: 14px 20px; text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
}
.compare-table thead th, .vs-table thead th {
  background: var(--color-bg-section);
  font-weight: 600; font-size: 13px;
  text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-muted);
}
.compare-table thead th:first-child, .vs-table thead th:first-child { background: transparent; }
.compare-table tbody td:first-child,
.vs-table tbody td:first-child { font-weight: 500; color: var(--color-text); }
.check { color: var(--color-success); font-size: 18px; font-weight: 700; }
.dash { color: var(--color-text-subtle); }
.compare-table__cta { padding: 20px; text-align: center; background: var(--color-bg-section); }
.compare-logos {
  display: flex; gap: 12px; justify-content: center;
  margin-top: 40px; flex-wrap: wrap;
}
.compare-logo {
  padding: 10px 18px;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); font-size: 13px;
  color: var(--color-text-muted); font-weight: 500;
  transition: all 0.15s;
}
.compare-logo:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* === Knowledge base preview === */
.kb-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.kb-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.2s;
  display: block;
}
.kb-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--color-accent); }
.kb-card__tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}
.kb-card__tag--guide { background: var(--color-accent-soft); color: var(--color-accent); }
.kb-card__tag--myth { background: var(--color-myth-bg); color: var(--color-myth-fg); }
.kb-card__tag--basics { background: var(--color-basics-bg); color: var(--color-basics-fg); }
.kb-card h3 { font-size: 18px; line-height: 1.35; color: var(--color-text); }

/* === Support block === */
.support-block {
  background: var(--color-accent-soft);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  display: flex; gap: 24px; align-items: center; justify-content: space-between;
  flex-wrap: wrap;
}
.support-block__text { font-size: 17px; color: var(--color-text); font-weight: 500; }

/* === FAQ === */
.faq { max-width: 800px; margin: 0 auto; }
.faq__item {
  border-bottom: 1px solid var(--color-border);
  padding: 4px 0;
}
.faq__item summary {
  font-weight: 500; font-size: 17px;
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--color-text);
  padding: 16px 0;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: '+'; font-size: 24px; color: var(--color-text-subtle);
  font-weight: 300; transition: transform 0.2s;
  margin-left: 16px;
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item p {
  padding-bottom: 20px; font-size: 16px; color: var(--color-text-muted);
  line-height: 1.6;
}
.faq__item p a { color: var(--color-accent); }
.faq__item p a:hover { text-decoration: underline; }

/* === Final CTA === */
.final-cta-wrapper { padding: 0 var(--gutter); margin-bottom: 80px; }
.final-cta {
  background: linear-gradient(135deg, var(--color-accent), #6366f1);
  color: white;
  padding: 80px var(--gutter);
  text-align: center;
  border-radius: var(--radius-lg);
  max-width: var(--max-width); margin: 0 auto;
}
.final-cta h2 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 24px; color: white; }
.final-cta p { color: rgba(255,255,255,0.85); font-size: 16px; max-width: 480px; margin: 20px auto 0; }
.final-cta .btn--primary { background: white; color: var(--color-accent); }
.final-cta .btn--primary:hover { background: white; color: var(--color-accent-hover); }

/* === Footer === */
.site-footer {
  background: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
  padding: 64px var(--gutter) 24px;
}
.site-footer__inner { max-width: var(--max-width); margin: 0 auto; }
.site-footer__columns {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 32px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border);
}
.site-footer__col-title {
  font-size: 12px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--color-text-subtle); margin-bottom: 16px;
}
.site-footer__list { list-style: none; display: grid; gap: 10px; }
.site-footer__list a { font-size: 14px; color: var(--color-text-muted); }
.site-footer__list a:hover { color: var(--color-accent); }
.site-footer__bottom {
  padding: 32px 0 0;
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 32px; flex-wrap: wrap;
}
.site-footer__brand { display: flex; flex-direction: column; gap: 6px; max-width: 480px; }
.site-footer__brand-logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 18px; letter-spacing: -0.03em; }
.site-footer__brand-tagline { font-size: 14px; color: var(--color-text-muted); }
.site-footer__brand-trust { font-size: 12px; color: var(--color-text-subtle); }
.site-footer__social { display: flex; gap: 12px; }
.site-footer__social a {
  width: 36px; height: 36px;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); font-size: 14px;
}
.site-footer__social a:hover { color: var(--color-accent); border-color: var(--color-accent); }
.site-footer__copyright {
  padding-top: 24px; margin-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  font-size: 12px; color: var(--color-text-subtle);
}
.site-footer__legal-links { display: flex; gap: 16px; }
.site-footer__legal-links a:hover { color: var(--color-accent); }

/* === Breadcrumbs === */
.breadcrumbs {
  display: flex; gap: 8px; align-items: center;
  font-size: 13px; color: var(--color-text-muted);
  padding: 24px 0;
}
.breadcrumbs a:hover { color: var(--color-accent); }
.breadcrumbs__sep { color: var(--color-text-subtle); }

/* === Pricing-specific === */
.pricing-toggle {
  display: inline-flex; padding: 4px;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  margin: 32px auto 0;
}
.pricing-toggle button {
  padding: 10px 24px;
  font-size: 14px; font-weight: 500;
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  transition: all 0.15s;
}
.pricing-toggle button.active { background: var(--color-accent); color: white; }
.pricing-toggle__badge {
  display: inline-block; margin-left: 4px;
  padding: 2px 8px; font-size: 10px;
  background: rgba(255,255,255,0.2); border-radius: var(--radius-pill);
}

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.pricing-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  display: flex; flex-direction: column;
}
.pricing-card--featured { border-color: var(--color-accent); box-shadow: 0 0 0 4px var(--color-accent-soft); }
.pricing-card__badge {
  position: absolute; top: -12px; left: 32px;
  background: var(--color-accent); color: white;
  padding: 4px 12px; font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em;
  border-radius: var(--radius-pill);
}
.pricing-card__tier { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.pricing-card__price { font-size: 42px; font-weight: 700; letter-spacing: -0.03em; line-height: 1; margin-top: 12px; }
.pricing-card__price small { font-size: 16px; font-weight: 500; color: var(--color-text-muted); }
.pricing-card__billed { font-size: 13px; color: var(--color-text-subtle); margin-top: 8px; }
.pricing-card__features { list-style: none; margin: 28px 0; display: grid; gap: 12px; flex: 1; }
.pricing-card__features li {
  padding-left: 28px; position: relative;
  font-size: 14px; color: var(--color-text);
  line-height: 1.4;
}
.pricing-card__features li::before {
  content: '✓';
  position: absolute; left: 0; top: -1px;
  width: 20px; height: 20px;
  background: var(--color-accent-soft); color: var(--color-accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
}
.pricing-card__features li.disabled { color: var(--color-text-subtle); }
.pricing-card__features li.disabled::before {
  content: '−'; background: var(--color-bg-section); color: var(--color-text-subtle);
}

/* === Calculator === */
.calculator {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 800px; margin: 0 auto;
}
.calculator__label {
  font-size: 14px; font-weight: 500;
  margin-bottom: 12px; display: flex; justify-content: space-between;
}
.calculator__label-value {
  font-weight: 700; color: var(--color-accent); font-size: 16px;
}
.calculator__slider {
  width: 100%; height: 6px;
  background: var(--color-bg-section);
  border-radius: var(--radius-pill);
  appearance: none; -webkit-appearance: none;
  outline: none;
}
.calculator__slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 24px; height: 24px;
  background: var(--color-accent); border-radius: 50%;
  cursor: pointer; box-shadow: var(--shadow-md);
  border: 3px solid white;
}
.calculator__slider::-moz-range-thumb {
  width: 24px; height: 24px;
  background: var(--color-accent); border-radius: 50%;
  cursor: pointer; box-shadow: var(--shadow-md);
  border: 3px solid white;
}
.calculator__results {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin: 24px 0;
}
.calculator__result {
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
}
.calculator__result--neg { background: #fef2f2; }
.calculator__result--pos { background: #f0fdf4; }
.calculator__result-label { font-size: 13px; color: var(--color-text-muted); margin-bottom: 6px; }
.calculator__result-value { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.calculator__result--neg .calculator__result-value { color: #b91c1c; }
.calculator__result--pos .calculator__result-value { color: var(--color-success); }
.calculator__savings {
  text-align: center; font-size: 18px;
  padding: 16px; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent-soft), #ddd6fe);
}
.calculator__savings strong { color: var(--color-success); font-size: 22px; }

/* === Matrix === */
.matrix-toggle {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-weight: 500; cursor: pointer;
  color: var(--color-text); font-size: 14px;
  list-style: none;
}
.matrix-toggle::-webkit-details-marker { display: none; }
.matrix-toggle::after { content: '↓'; transition: transform 0.2s; }
details[open] > .matrix-toggle::after { transform: rotate(180deg); }
.matrix-table {
  margin-top: 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.matrix-table table { width: 100%; border-collapse: collapse; font-size: 14px; }
.matrix-table th, .matrix-table td { padding: 12px 16px; text-align: center; }
.matrix-table th { background: var(--color-bg-section); font-weight: 600; }
.matrix-table th:first-child, .matrix-table td:first-child { text-align: left; }
.matrix-table tr:not(:last-child) td { border-bottom: 1px solid var(--color-border); }
.matrix-section-header td {
  background: var(--color-bg-subtle) !important;
  font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-muted) !important; padding: 10px 16px !important;
}

.trust-block {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex; gap: 32px; align-items: center; justify-content: center;
  flex-wrap: wrap;
}
.trust-block__logos {
  display: flex; gap: 24px; align-items: center;
  color: var(--color-text-muted); font-size: 14px; font-weight: 500;
}
.trust-block__badge {
  display: flex; gap: 12px; align-items: center;
  background: var(--color-bg-card); padding: 12px 20px;
  border: 1px solid var(--color-border-strong); border-radius: var(--radius-md);
}
.trust-block__badge-icon {
  width: 28px; height: 28px; background: var(--color-success);
  border-radius: 50%; color: white;
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}

/* === VS-page === */
.vs-hero { padding: 40px var(--gutter) 60px; text-align: center; }
.vs-hero__logos {
  display: flex; gap: 24px; align-items: center; justify-content: center;
  margin-bottom: 32px;
}
.vs-hero__logo {
  font-weight: 700; font-size: 20px;
  padding: 14px 28px; background: var(--color-bg-card);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  color: var(--color-text);
}
.vs-hero__logo--google { color: #ea4335; }
.vs-hero__vs {
  font-weight: 800; font-size: 24px;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}
.vs-hero h1 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 20px; }
.vs-hero__sub { font-size: 18px; color: var(--color-text-muted); max-width: 640px; margin: 0 auto; }
.vs-tldr {
  max-width: 720px; margin: 48px auto 0;
  padding: 28px 32px; background: var(--color-accent-soft);
  border-radius: var(--radius-lg);
  text-align: left; font-size: 16px; line-height: 1.7;
  border-left: 4px solid var(--color-accent);
}
.vs-tldr strong { color: var(--color-text); display: block; margin-bottom: 8px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; }
.vs-deep-block { max-width: 720px; margin: 0 auto 64px; }
.vs-deep-block h2 { margin-bottom: 20px; }
.vs-deep-block h3 { margin-bottom: 16px; font-size: 22px; }
.vs-deep-block p { font-size: 17px; line-height: 1.7; margin-bottom: 16px; }
.vs-deep-block ol { font-size: 16px; line-height: 1.7; padding-left: 24px; }
.vs-deep-block ol li { margin-bottom: 12px; }
.vs-viz-placeholder {
  margin: 24px 0;
  height: 200px;
  background: linear-gradient(135deg, var(--color-bg-section), var(--color-accent-soft));
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-subtle); font-size: 14px; font-style: italic;
  border: 1px dashed var(--color-border-strong);
}
.vs-sticky-cta {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 16px;
  padding: 10px 12px 10px 20px;
  background: var(--color-text); color: white;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg);
  z-index: 50; max-width: calc(100% - 48px);
}
.vs-sticky-cta__text { font-size: 14px; }
.vs-sticky-cta .btn--primary {
  background: white; color: var(--color-accent);
  padding: 8px 16px; font-size: 13px;
}

/* === Feature detail (Catch-all) === */
.feature-hero {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
  padding: 40px var(--gutter) 80px;
}
.feature-hero__left h1 { font-size: 44px; margin-bottom: 24px; line-height: 1.1; }
.feature-hero__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; background: var(--color-accent-soft);
  color: var(--color-accent); border-radius: var(--radius-md);
  font-size: 22px; margin-bottom: 24px;
}
.feature-hero__body { font-size: 18px; line-height: 1.6; color: var(--color-text-muted); margin-bottom: 32px; }
.feature-hero__visual {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}
.admin-mockup__title { font-size: 12px; color: var(--color-text-subtle); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.admin-mockup__row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px; background: var(--color-bg-section);
  border-radius: var(--radius-md); margin-bottom: 12px; font-size: 14px;
}
.admin-mockup__row-label { font-weight: 500; }
.admin-mockup__toggle {
  position: relative; width: 40px; height: 22px;
  background: var(--color-accent); border-radius: 11px;
}
.admin-mockup__toggle::after {
  content: ''; position: absolute; top: 2px; right: 2px;
  width: 18px; height: 18px; background: white; border-radius: 50%;
}
.admin-mockup__addresses { display: grid; gap: 6px; margin-top: 16px; }
.admin-mockup__address {
  font-family: var(--font-mono); font-size: 12px;
  padding: 8px 12px; background: var(--color-bg-subtle);
  border-radius: var(--radius-sm); color: var(--color-text-muted);
  display: flex; gap: 8px; align-items: center;
}
.admin-mockup__address::before { content: '✉'; color: var(--color-accent); }

.flow-diagram {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 20px; align-items: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.flow-step { text-align: center; padding: 20px; }
.flow-step__icon {
  width: 56px; height: 56px;
  background: var(--color-accent-soft); color: var(--color-accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin: 0 auto 16px;
}
.flow-step__label { font-size: 13px; color: var(--color-text-muted); margin-bottom: 4px; }
.flow-step__value { font-family: var(--font-mono); font-size: 13px; color: var(--color-text); line-height: 1.4; }
.flow-step__hint { font-size: 12px; color: var(--color-text-subtle); margin-top: 6px; font-style: italic; }
.flow-arrow { font-size: 24px; color: var(--color-text-subtle); }
.flow-diagram__caption { grid-column: 1 / -1; text-align: center; color: var(--color-text-muted); font-size: 14px; margin-top: 16px; }

.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.benefit {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 32px;
}
.benefit__icon {
  width: 48px; height: 48px;
  background: var(--color-accent-soft); color: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px;
}
.benefit h3 { font-size: 18px; margin-bottom: 12px; }
.benefit p { font-size: 15px; line-height: 1.55; }

.related-features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.related-feature {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 24px;
  display: block; transition: all 0.2s;
}
.related-feature:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.related-feature h4 { font-size: 16px; color: var(--color-text); margin-bottom: 8px; font-weight: 600; }
.related-feature p { font-size: 14px; line-height: 1.55; }
.related-feature__arrow { color: var(--color-accent); font-size: 13px; margin-top: 12px; display: block; font-weight: 500; }
.related-feature__arrow::after { content: ' →'; }

/* === Blog article === */
.article { padding: 24px var(--gutter) 48px; max-width: 740px; margin: 0 auto; }
.article__header { text-align: center; margin-bottom: 48px; }
.article__tag {
  display: inline-block; padding: 4px 12px;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  background: var(--color-myth-bg); color: var(--color-myth-fg);
  border-radius: var(--radius-pill); margin-bottom: 20px;
}
.article__h1 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 20px; line-height: 1.2; }
.article__sub { font-size: 17px; color: var(--color-text-muted); margin-bottom: 32px; line-height: 1.55; }
.article__meta {
  display: flex; gap: 16px; align-items: center; justify-content: center;
  font-size: 14px; color: var(--color-text-muted); flex-wrap: wrap;
}
.article__avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #6366f1);
  display: inline-flex; align-items: center; justify-content: center;
  color: white; font-weight: 600; font-size: 13px;
}
.article__meta-sep { color: var(--color-text-subtle); }
.article__hero-img {
  margin: 0 auto 48px;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-accent-soft), var(--color-myth-bg));
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-subtle); font-style: italic; font-size: 14px;
}
.article__body { font-size: 17px; line-height: 1.75; color: var(--color-text); }
.article__body > p:first-child::first-letter,
.article__lede::first-letter { font-size: 1em; }
.article__body h2 { font-size: 26px; margin: 48px 0 20px; }
.article__body p { font-size: 17px; line-height: 1.75; color: var(--color-text); margin-bottom: 20px; }
.article__body p strong { color: var(--color-text); font-weight: 600; }
.article__body ul, .article__body ol { margin: 16px 0 24px; padding-left: 24px; font-size: 17px; line-height: 1.7; }
.article__body li { margin-bottom: 10px; color: var(--color-text); }
.article__body hr {
  border: none; height: 1px; background: var(--color-border);
  margin: 40px 0;
}
.article__body code {
  font-family: var(--font-mono); font-size: 0.88em;
  background: var(--color-bg-subtle); padding: 2px 6px;
  border-radius: var(--radius-sm); color: var(--color-text);
}
.article__body a { color: var(--color-accent); }
.article__body a:hover { text-decoration: underline; }
.article__author {
  display: flex; gap: 20px; align-items: flex-start;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 28px;
  margin: 56px 0 32px;
}
.article__author-avatar {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #6366f1);
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 600; font-size: 22px;
  flex-shrink: 0;
}
.article__author-name { font-size: 18px; font-weight: 600; color: var(--color-text); }
.article__author-title { font-size: 14px; color: var(--color-text-muted); margin-bottom: 8px; font-style: italic; }
.article__author-bio { font-size: 14px; color: var(--color-text-muted); line-height: 1.6; }
.article__author-link { margin-top: 8px; font-size: 13px; }
.article__share {
  display: flex; gap: 16px; align-items: center;
  padding: 24px 0; border-top: 1px solid var(--color-border);
  font-size: 14px; color: var(--color-text-muted);
}
.article__share-buttons { display: flex; gap: 8px; }
.article__share-buttons a {
  width: 32px; height: 32px;
  background: var(--color-bg-section); border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: var(--color-text-muted);
}
.article__share-buttons a:hover { color: var(--color-accent); background: var(--color-accent-soft); }
.article__related { padding: 48px 0; border-top: 1px solid var(--color-border); }
.article__related h2 { margin-bottom: 24px; font-size: 22px; }
.article__related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* === Mobile === */
@media (max-width: 900px) {
  .site-nav { display: none; }
  .site-nav__user .btn--secondary { display: none; }
  .solutions-grid { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .feature-row--reverse .feature-row__visual { order: 0; }
  .kb-grid { grid-template-columns: 1fr; }
  .site-footer__columns { grid-template-columns: 1fr 1fr; gap: 24px; }
  .compare-table, .vs-table { font-size: 13px; }
  .compare-table th, .compare-table td, .vs-table th, .vs-table td { padding: 10px 12px; font-size: 13px; }
  .domain-checker { flex-direction: column; padding: 8px; }
  .domain-checker__btn { width: 100%; padding: 14px; }
  h1 { font-size: 32px; }
  h2 { font-size: 26px; }
  .hero { padding: 60px var(--gutter); }
  .section { padding: 60px 0; }
  .pricing-grid { grid-template-columns: 1fr; gap: 16px; }
  .matrix-table table { font-size: 12px; }
  .vs-hero__logos { flex-direction: column; gap: 12px; }
  .vs-hero__vs { font-size: 18px; }
  .feature-hero { grid-template-columns: 1fr; gap: 32px; }
  .feature-hero__left h1 { font-size: 32px; }
  .benefits, .related-features-grid, .article__related-grid { grid-template-columns: 1fr; }
  .flow-diagram { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); }
  .calculator__results { grid-template-columns: 1fr; }
  .final-cta { padding: 60px 24px; }
  .site-footer__bottom { flex-direction: column; gap: 24px; }
}

/* === Prototype navigator (review widget — hidden in production) === */
.prototype-nav {
  background: #0f172a;
  color: white;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 13px;
  display: flex; align-items: center; gap: 16px;
  border-bottom: 1px solid #334155;
  flex-wrap: wrap;
}
.prototype-nav__label {
  font-weight: 700;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 10px;
  padding-right: 12px;
  border-right: 1px solid rgba(255,255,255,0.15);
  white-space: nowrap;
}
.prototype-nav__variant {
  font-weight: 600;
  color: white;
  white-space: nowrap;
}
.prototype-nav__pages {
  display: flex; gap: 4px;
  margin-left: 8px;
}
.prototype-nav__link {
  color: rgba(255,255,255,0.75);
  padding: 6px 12px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.15s;
  white-space: nowrap;
}
.prototype-nav__link:hover { background: rgba(255,255,255,0.1); color: white; }
.prototype-nav__link--active {
  background: white; color: #0f172a;
}
.prototype-nav__back {
  margin-left: auto;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  padding-left: 16px;
  border-left: 1px solid rgba(255,255,255,0.15);
  white-space: nowrap;
  font-size: 12px;
}
.prototype-nav__back:hover { color: white; }

@media (max-width: 700px) {
  .prototype-nav { font-size: 12px; padding: 10px 16px; gap: 8px; }
  .prototype-nav__label { font-size: 9px; padding-right: 8px; }
  .prototype-nav__variant { font-size: 12px; }
  .prototype-nav__pages { width: 100%; margin-left: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .prototype-nav__back { margin-left: auto; padding-left: 8px; }
  .prototype-nav__link { padding: 4px 10px; font-size: 12px; }
}