/* Site-wide layout styles */

/* NAV */
.site-nav { position: sticky; top: 0; z-index: 50; background: color-mix(in oklch, var(--bg) 92%, transparent); backdrop-filter: blur(12px); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.nav-links { display: flex; gap: 2px; align-items: center; }
.nav-item { position: relative; }
.nav-item > a {
  position: relative;
  display: inline-flex; align-items: center;
  padding: 8px 14px; border-radius: var(--r-pill);
  font-size: 14px; color: var(--ink-soft);
  transition: color 160ms ease;
  cursor: pointer;
  user-select: none;
}
.nav-item > a:hover,
.nav-item > a.active,
.nav-item.is-open > a { color: var(--ink); background: transparent; }

/* Deloitte-style underline — thin green progress line that wipes in left→right */
.nav-item > a::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 1.5px;
  border-radius: 1px;
  background: var(--accent); /* logo green #00A868 */
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 420ms cubic-bezier(.33, 1, .68, 1);
  pointer-events: none;
  opacity: 0.92;
}
.nav-item > a:hover::after,
.nav-item > a:focus-visible::after,
.nav-item.is-open > a::after,
.nav-item > a.active::after {
  transform: scaleX(1);
}
/* Retract right→left when the pointer leaves */
.nav-item > a:not(:hover):not(.active)::after {
  transform-origin: right center;
}
.nav-item.is-open > a::after { transform-origin: left center; }

/* Full-width mega panel, anchored to header bottom */
.mega-panel {
  position: absolute;
  left: 0; right: 0; top: 100%;
  background: var(--bg-raised);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  box-shadow: 0 24px 40px -20px rgba(14,15,14,0.15);
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 180ms ease, transform 220ms ease, visibility 0s linear 220ms;
  z-index: 40;
}
.mega-panel.is-open {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateY(0);
  transition: opacity 180ms ease, transform 220ms ease, visibility 0s linear 0s;
}
.mega-backdrop {
  position: fixed; inset: 68px 0 0 0;
  background: rgba(14,15,14,0.22);
  animation: mega-fade 160ms ease both;
  z-index: 30;
}
@keyframes mega-fade { from { opacity: 0; } to { opacity: 1; } }

.mega {
  display: grid;
  gap: 40px;
  padding: 36px 0 40px;
  align-items: start;
}
.mega-services { grid-template-columns: 1.4fr 1.3fr 1fr; }

/* Featured service item at top of middle column — matches Core Services weight */
.mega-featured-item {
  display: flex;
  gap: 14px;
  padding: 14px 12px;
  margin: 0 -12px;
  border-radius: var(--r-md, 10px);
  align-items: flex-start;
  transition: background 140ms ease;
}
.mega-featured-item:hover { background: var(--bg-sunken); }
.mega-featured-item:hover .mega-arrow { transform: translateX(4px); opacity: 1; }
.mega-featured-item:hover .mega-featured-icon {
  color: var(--accent-ink, var(--accent));
  border-color: color-mix(in oklch, var(--accent) 30%, var(--rule));
}
.mega-featured-icon {
  flex: 0 0 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--bg-sunken);
  border: 1px solid var(--rule);
  display: grid; place-items: center;
  color: var(--ink-soft);
  transition: color 140ms ease, border-color 140ms ease;
  margin-top: 2px;
}
.mega-featured-body { flex: 1; min-width: 0; }
.mega-featured-t {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.005em;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.mega-featured-tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  padding: 2px 7px;
  border-radius: var(--r-pill);
  background: var(--accent-wash);
  border: 1px solid var(--accent-line);
}
.mega-featured-d {
  font-size: 12.5px;
  color: var(--ink-muted);
  margin-top: 3px;
  line-height: 1.45;
}

.mega-col-divider {
  height: 1px;
  background: var(--rule);
  margin: 18px 0 14px;
}
.mega-eyebrow-inline {
  padding-bottom: 0;
  margin-bottom: 10px;
  border-bottom: none;
}
.mega-industries { grid-template-columns: 2.2fr 1fr; gap: 48px; }
.mega-resources { grid-template-columns: 2.4fr 1fr; }
.mega-resources-stack { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.mega-resources-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; min-width: 0; }
.mega-blog-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 22px;
  border: 1px solid var(--rule);
  border-radius: var(--r-md, 10px);
  background: var(--bg-raised);
  text-decoration: none;
  color: inherit;
  transition: background 160ms ease, border-color 160ms ease;
}
.mega-blog-cta:hover {
  background: var(--bg-sunken);
  border-color: color-mix(in oklch, var(--accent) 25%, var(--rule));
}
.mega-blog-cta-eyebrow {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-ink, var(--accent));
  margin-bottom: 6px;
}
.mega-blog-cta-t {
  font-family: var(--font-display, Georgia, serif);
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.25;
}
.mega-blog-cta-d {
  font-size: 12.5px;
  color: var(--ink-muted);
  margin-top: 4px;
  line-height: 1.5;
}
.mega-blog-cta-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-ink, var(--accent));
}
.mega-blog-cta:hover .mega-blog-cta-arrow svg { transform: translateX(4px); }
.mega-blog-cta-arrow svg { transition: transform 180ms ease; }

.mega-col { min-width: 0; }
.mega-eyebrow {
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}

/* Services list — big rows with icon, title, description */
.mega-services-list, .mega-svc-list {
  display: flex; flex-direction: column;
}
.mega-svc {
  display: flex; gap: 14px;
  padding: 14px 12px;
  margin: 0 -12px;
  border-radius: var(--r-md, 10px);
  transition: background 140ms ease, transform 140ms ease;
  align-items: flex-start;
}
.mega-svc:hover { background: var(--bg-sunken); }
.mega-svc:hover .mega-arrow { transform: translateX(4px); opacity: 1; }
.mega-svc.is-active { background: color-mix(in oklch, var(--accent) 6%, transparent); }
.mega-svc-icon {
  flex: 0 0 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--bg-sunken);
  border: 1px solid var(--rule);
  display: grid; place-items: center;
  color: var(--ink-soft);
}
.mega-svc.is-active .mega-svc-icon,
.mega-svc:hover .mega-svc-icon {
  color: var(--accent-ink, var(--accent));
  border-color: color-mix(in oklch, var(--accent) 30%, var(--rule));
}
.mega-svc-icon-sm { flex-basis: 34px; height: 34px; }
.mega-svc-body { flex: 1; min-width: 0; padding-top: 2px; }
.mega-svc-t {
  font-size: 15px; font-weight: 500; color: var(--ink);
  display: flex; align-items: center; gap: 8px;
}
.mega-arrow {
  display: inline-block;
  font-size: 14px;
  color: var(--ink-muted);
  opacity: 0;
  transition: transform 180ms ease, opacity 180ms ease;
}
.mega-svc-d {
  font-size: 13px; color: var(--ink-muted); margin-top: 4px; line-height: 1.5;
}

/* Simple list (add-ons) */
.mega-list { list-style: none; padding: 0; margin: 0; }
.mega-list li a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; margin: 0 -12px;
  border-radius: var(--r-md, 10px);
  font-size: 14px; color: var(--ink-soft);
  transition: background 120ms, color 120ms;
}
.mega-list li a:hover { background: var(--bg-sunken); color: var(--ink); }
.mega-list svg { color: var(--ink-muted); }

/* Industries grid */
.mega-ind-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 4px;
}
.mega-ind {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px;
  margin: -2px;
  border-radius: var(--r-md, 10px);
  transition: background 140ms ease;
}
.mega-ind:hover { background: var(--bg-sunken); }
.mega-ind-icon {
  flex: 0 0 34px; height: 34px;
  border-radius: 8px;
  background: var(--bg-sunken);
  border: 1px solid var(--rule);
  display: grid; place-items: center;
  color: var(--ink-soft);
}
.mega-ind-t { font-size: 14px; font-weight: 500; color: var(--ink); }
.mega-ind-d { font-size: 12px; color: var(--ink-muted); margin-top: 3px; }

/* Feature card — right-side highlight panel */
.mega-col-feature { }
.mega-feature {
  display: block;
  padding: 24px;
  border-radius: var(--r-lg, 14px);
  background: linear-gradient(135deg,
    color-mix(in oklch, var(--accent) 10%, var(--bg-raised)) 0%,
    color-mix(in oklch, var(--accent) 4%, var(--bg-raised)) 100%);
  border: 1px solid color-mix(in oklch, var(--accent) 22%, var(--rule));
  height: 100%;
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.mega-feature:hover { transform: translateY(-2px); box-shadow: 0 12px 24px -16px rgba(14,15,14,0.2); }
.mega-feature-quiet {
  background: var(--bg-sunken);
  border-color: var(--rule);
}
.mega-feature-eyebrow {
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-ink, var(--accent));
}
.mega-feature-quiet .mega-feature-eyebrow { color: var(--ink-muted); }
.mega-feature-t {
  font-family: var(--serif, Georgia, serif);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-top: 14px;
  text-wrap: pretty;
}
.mega-feature-d {
  font-size: 13px; color: var(--ink-soft); line-height: 1.55;
  margin-top: 10px;
}
.mega-feature-cta {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px;
  font-size: 13px; font-weight: 500; color: var(--accent-ink, var(--accent));
}
.mega-feature:hover .mega-feature-cta span { transform: translateX(3px); transition: transform 180ms ease; display: inline-block; }

/* Journal feature card — editorial masthead promo for The Revenu Journal */
.mega-feature-journal {
  display: flex;
  flex-direction: column;
  padding: 22px 22px 20px;
}
.mega-journal-masthead {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.mega-journal-rule {
  flex: 1;
  height: 1px;
  background: color-mix(in oklch, var(--accent) 28%, var(--rule));
}
.mega-journal-wordmark {
  font-family: var(--serif, Georgia, serif);
  font-style: italic;
  font-size: 15px;
  letter-spacing: 0.005em;
  color: var(--ink);
  white-space: nowrap;
}
.mega-journal-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 16px;
}
.mega-journal-meta span[aria-hidden] {
  color: color-mix(in oklch, var(--ink-muted) 50%, transparent);
}
.mega-journal-headline {
  margin-top: 0;
  font-size: 21px;
  line-height: 1.22;
}
.mega-journal-headline em {
  font-style: italic;
  color: var(--accent-ink, var(--accent));
}
.mega-journal-latest {
  margin-top: 18px;
  padding: 12px 14px;
  border-left: 2px solid color-mix(in oklch, var(--accent) 45%, var(--rule));
  background: color-mix(in oklch, var(--accent) 5%, var(--bg-raised));
  border-radius: 4px;
}
.mega-journal-latest-eyebrow {
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-ink, var(--accent));
  margin-bottom: 6px;
}
.mega-journal-latest-t {
  font-family: var(--serif, Georgia, serif);
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--ink-soft);
  text-wrap: pretty;
}
.mega-feature-journal .mega-feature-cta {
  margin-top: auto;
  padding-top: 18px;
}

.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-login { font-size: 14px; color: var(--ink-soft); padding: 8px 12px; }

/* FOOTER */
.site-footer {
  margin-top: 120px;
  padding: 80px 0 32px;
  background: var(--bg-sunken);
  border-top: 1px solid var(--rule);
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 40px; }
.footer-grid ul { list-style: none; padding: 0; margin: 16px 0 0; }
.footer-grid li { margin: 10px 0; }
.footer-grid a { font-size: 14px; color: var(--ink-soft); }
.footer-grid a:hover { color: var(--ink); }
.footer-bottom { display: flex; justify-content: space-between; padding: 24px 0; font-size: 13px; color: var(--ink-muted); }
.footer-rating { margin-top: 20px; display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink-soft); }
.stars { color: var(--accent); letter-spacing: 1px; }
.footer-social { list-style: none; padding: 0; margin: 20px 0 0; display: flex; gap: 8px; }
.footer-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 999px;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.footer-social a:hover {
  color: var(--accent-ink);
  border-color: var(--accent-line);
  background: var(--accent-wash);
}

/* Rating badge */
.rating-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  font-size: 13px;
  color: var(--ink-soft);
}
.rating-badge .stars { font-size: 12px; }

/* CTA band */
.cta-band {
  margin-top: 120px;
  background: var(--ink);
  color: white;
  padding: 80px 0;
  border-radius: 24px;
  margin-left: var(--gutter);
  margin-right: var(--gutter);
}
@media (min-width: 1240px) { .cta-band { margin-left: auto; margin-right: auto; max-width: 1176px; } }
.cta-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: end; }
.cta-actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-end; }

/* Sections */
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

/* Section header */
.section-head {
  display: grid; grid-template-columns: 1fr 2fr; gap: 48px;
  padding-bottom: 48px;
}
.section-head h2 { font-size: clamp(36px, 4vw, 52px); margin: 12px 0 0; }
.section-head .sh-right { align-self: end; }
.section-head p { color: var(--ink-muted); font-size: 17px; margin: 0; max-width: 520px; }

/* Utility */
.pill-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--r-pill);
  background: var(--bg-sunken);
  font-size: 12px; color: var(--ink-soft);
  border: 1px solid var(--rule-soft);
}

/* Service hero card (shared) */
.svc-hero {
  padding-top: 80px;
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 64px;
  align-items: start;
}
.svc-hero h1 { font-size: clamp(52px, 6.5vw, 88px); line-height: 1.06; margin: 24px 0 40px; }
.svc-hero p.lede { font-size: 20px; color: var(--ink-soft); max-width: 560px; line-height: 1.5; }
.svc-hero-meta { display: flex; flex-direction: column; gap: 24px; border-left: 1px solid var(--rule); padding-left: 32px; }
.svc-hero-meta .label { font-size: 12px; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.svc-hero-meta .value { font-size: 15px; margin-top: 4px; color: var(--ink); }

/* Feature grid */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); border-radius: var(--r-lg); overflow: hidden; }
.feature-cell { background: var(--bg-raised); padding: 32px; }
.feature-cell .num { font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted); letter-spacing: 0.1em; }
.feature-cell h3 { font-family: var(--font-display); font-size: 24px; font-weight: 400; margin: 16px 0 8px; letter-spacing: -0.01em; }
.feature-cell p { color: var(--ink-muted); font-size: 14.5px; line-height: 1.55; margin: 0; }

/* How it works steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--rule); }
.step { padding: 32px 24px; border-right: 1px solid var(--rule); }
.step:first-child { padding-left: 0; }
.step:last-child { border-right: none; padding-right: 0; }
.step .num { font-family: var(--font-mono); font-size: 11px; color: var(--accent-ink); letter-spacing: 0.12em; }
.step h4 { font-family: var(--font-display); font-size: 28px; font-weight: 400; margin: 12px 0 8px; letter-spacing: -0.01em; }
.step p { color: var(--ink-muted); font-size: 14px; margin: 0; }

/* Logo row */
.logo-row { display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; opacity: 0.7; }
.logo-placeholder {
  font-family: var(--font-display); font-size: 24px; color: var(--ink-soft);
  letter-spacing: -0.01em; font-style: italic;
}

/* Testimonial */
.testimonial { padding: 48px; background: var(--bg-raised); border: 1px solid var(--rule); border-radius: var(--r-lg); }
.testimonial blockquote { font-family: var(--font-display); font-size: clamp(26px, 2.4vw, 34px); line-height: 1.3; margin: 0; letter-spacing: -0.01em; }
.testimonial .cite { display: flex; align-items: center; gap: 12px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--rule); }
.testimonial .avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--bg-sunken); display:flex; align-items:center; justify-content:center; font-size:14px; color:var(--ink-muted); }
.testimonial .cite-who { font-size: 14px; }
.testimonial .cite-sub { font-size: 13px; color: var(--ink-muted); }

/* Pricing */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); border-radius: var(--r-lg); overflow: hidden; }
.price-col { background: var(--bg-raised); padding: 40px 32px; display:flex; flex-direction:column; }
.price-col.featured { background: var(--ink); color: white; }
.price-col .tier { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; color: var(--accent-ink); }
.price-col.featured .tier { color: var(--accent-soft); }
.price-col h3 { font-family: var(--font-display); font-size: 40px; font-weight: 400; margin: 16px 0 4px; letter-spacing: -0.01em; }
.price-col .subtitle { font-size: 14px; color: var(--ink-muted); margin-bottom: 24px; }
.price-col.featured .subtitle { color: oklch(0.75 0.01 80); }
.price-col .price { display: flex; align-items: baseline; gap: 4px; margin-bottom: 4px; }
.price-col .price .amt { font-family: var(--font-display); font-size: 56px; letter-spacing: -0.02em; }
.price-col .price .per { font-size: 15px; color: var(--ink-muted); }
.price-col.featured .price .per { color: oklch(0.75 0.01 80); }
.price-col ul { list-style: none; padding: 0; margin: 32px 0 0; flex: 1; }
.price-col li { display: flex; align-items: flex-start; gap: 10px; padding: 10px 0; font-size: 14px; border-bottom: 1px dashed var(--rule-soft); }
.price-col.featured li { border-color: oklch(0.28 0.01 80); }
.price-col li svg { color: var(--accent); margin-top: 3px; flex-shrink: 0; }
.price-col .btn { margin-top: 32px; justify-content: center; }

/* FAQ */
.faq-list { border-top: 1px solid var(--rule); }
.faq-item { border-bottom: 1px solid var(--rule); padding: 24px 0; display: grid; grid-template-columns: 1fr 2fr; gap: 48px; cursor: pointer; }
.faq-item h3 { font-family: var(--font-display); font-size: 24px; font-weight: 400; margin: 0; letter-spacing: -0.01em; }
.faq-item p { color: var(--ink-muted); margin: 0; font-size: 15px; line-height: 1.6; }

/* Responsive */
.nav-mobile-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border-radius: var(--r-md);
  color: var(--ink);
  margin-left: 4px;
}
.nav-mobile-toggle:hover { background: var(--bg-sunken); }

/* Mobile drawer */
.mobile-drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(92vw, 380px);
  background: var(--bg-raised);
  border-left: 1px solid var(--rule);
  box-shadow: -24px 0 40px -20px rgba(14,15,14,0.18);
  z-index: 80;
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform 260ms cubic-bezier(.22,.61,.36,1);
  visibility: hidden;
  transition-property: transform, visibility;
  transition-delay: 0s, 260ms;
}
.mobile-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
  transition-delay: 0s, 0s;
}
.mobile-backdrop {
  position: fixed; inset: 0;
  background: rgba(14,15,14,0.32);
  z-index: 70;
  animation: mega-fade 200ms ease both;
}
.mobile-drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--rule);
  flex: 0 0 auto;
}
.mobile-close {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-md);
  color: var(--ink-soft);
}
.mobile-close:hover { background: var(--bg-sunken); color: var(--ink); }
.mobile-drawer-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 8px 0 16px;
  -webkit-overflow-scrolling: touch;
}
.md-group + .md-group,
.md-group + .md-flat,
.md-flat + .md-flat,
.md-flat + .md-group {
  border-top: 1px solid var(--rule-soft);
}
.md-group-head {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  background: transparent;
  min-height: 56px;
}
.md-group-head:active { background: var(--bg-sunken); }
.md-group-head svg { color: var(--ink-muted); }
.md-group-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 260ms ease;
}
.md-group.is-expanded .md-group-body { grid-template-rows: 1fr; }
.md-group-body-inner {
  overflow: hidden;
  padding: 0 12px 0 24px;
}
.md-group.is-expanded .md-group-body-inner { padding-bottom: 16px; }
.md-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 12px;
  min-height: 44px;
  font-size: 15px;
  color: var(--ink-soft);
  border-radius: var(--r-md);
}
.md-item:active { background: var(--bg-sunken); color: var(--ink); }
.md-item.is-active { color: var(--accent-ink); background: var(--accent-wash); }
.md-tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  padding: 2px 7px;
  border-radius: var(--r-pill);
  background: var(--accent-wash);
  border: 1px solid var(--accent-line);
}
.md-flat {
  display: block;
  padding: 18px 24px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  min-height: 56px;
}
.md-flat:active { background: var(--bg-sunken); }
.mobile-drawer-foot {
  flex: 0 0 auto;
  padding: 16px 20px 20px;
  border-top: 1px solid var(--rule);
  display: flex; align-items: center; gap: 12px;
  background: var(--bg);
}
.md-login {
  font-size: 14px;
  color: var(--ink-soft);
  padding: 12px 14px;
}
.md-cta { flex: 1; justify-content: center; padding: 14px 20px; font-size: 14px; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-mobile-toggle { display: flex; }
  .nav-inner { height: 60px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .section-head, .svc-hero, .cta-inner, .feature-grid, .steps, .price-grid { grid-template-columns: 1fr !important; }
  .step { border-right: none; border-bottom: 1px solid var(--rule); padding: 24px 0; }
  .section-head { padding-bottom: 32px; gap: 20px; }
  .section { padding: 64px 0; }
  .section-sm { padding: 40px 0; }
  .svc-hero { padding-top: 40px; gap: 32px; }
  .svc-hero h1 { margin: 16px 0 24px; }
  .svc-hero p.lede { font-size: 17px; }
  .svc-hero-meta {
    border-left: none;
    border-top: 1px solid var(--rule);
    padding-left: 0;
    padding-top: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .cta-band {
    margin-top: 72px;
    padding: 48px 0;
    margin-left: 16px; margin-right: 16px;
    border-radius: 18px;
  }
  .cta-inner { gap: 24px; }
  .cta-actions { align-items: stretch; flex-direction: column; }
  .cta-actions .btn { justify-content: center; }
  .site-footer { margin-top: 72px; padding: 56px 0 24px; }
  .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
  .testimonial { padding: 32px 24px; }
}

@media (max-width: 640px) {
  :root { --gutter: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 48px 0; }
  .section-sm { padding: 32px 0; }
  .svc-hero-meta { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 0; }
  .cta-actions .btn { width: 100%; }
}

/* Journal article — guarantee L/R margins on mobile and prevent
   nested boxes (factbox, recon, plate, related items) from going edge-to-edge. */
@media (max-width: 700px) {
  .art-page .container { padding-left: 24px; padding-right: 24px; }
  .art-page .art-hero { padding-left: 0; padding-right: 0; }
  .art-page .art-factbox { padding: 22px 20px; }
  .art-page .art-recon { padding: 24px 20px; }
  .art-page .plate-card { padding: 22px 20px 20px; }
  .art-page .related-row .item { padding: 22px 20px; }
  .art-page .art-closing { padding: 56px 0; }
  .art-page .art-body { padding: 48px 0 64px; }
  .art-page .art-prose blockquote { padding-left: 18px; }
}