/* checksynthid.com — landing styles */
:root {
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #0f172a;
  --text: #0f172a;
  --text-muted: #475569;
  --text-soft: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: #eff6ff;
  --accent: #0ea5e9;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.05), 0 10px 28px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 8px 16px rgba(15, 23, 42, 0.04), 0 24px 48px rgba(15, 23, 42, 0.08);
  --max: 1120px;
  --narrow: 720px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --leading: 1.65;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: var(--leading);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}
.container.narrow {
  width: min(100% - 2rem, var(--narrow));
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(1.2) blur(14px);
  -webkit-backdrop-filter: saturate(1.2) blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 4rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.025em;
}
.logo:hover { color: var(--text); }
.logo-mark {
  display: block;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 8px;
}
.logo-text {
  font-weight: 700;
  letter-spacing: -0.03em;
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  flex-wrap: wrap;
}
.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.nav a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.9rem 1.45rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.975rem;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  line-height: 1.25;
}
.btn:active { transform: translateY(1px); }
.btn-sm {
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
}
.btn-block { width: 100%; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2), 0 8px 20px rgba(37, 99, 235, 0.18);
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.25), 0 10px 24px rgba(37, 99, 235, 0.22);
}
.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  border-color: #cbd5e1;
  background: var(--bg-alt);
  color: var(--text);
}

/* Hero */
.hero {
  padding: 4.5rem 0 3.75rem;
  background:
    radial-gradient(ellipse 70% 55% at 50% -15%, #dbeafe 0%, transparent 65%),
    radial-gradient(ellipse 40% 40% at 90% 20%, #e0f2fe 0%, transparent 50%),
    linear-gradient(180deg, #f8fafc 0%, #ffffff 72%);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2.5rem 3rem;
  align-items: center;
}
.hero-copy { min-width: 0; }
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 0;
}
.hero-illust {
  width: min(100%, 480px);
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 20px 40px rgba(15, 23, 42, 0.08));
}
.eyebrow {
  display: inline-block;
  margin: 0 0 1.15rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid #bfdbfe;
  border-radius: 999px;
}
.hero h1 {
  margin: 0 0 1.15rem;
  font-size: clamp(1.85rem, 3.6vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
  font-weight: 700;
  color: var(--text);
}
.lede {
  margin: 0 0 1.75rem;
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 38rem;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}
.hero-note {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-soft);
  max-width: 36rem;
  line-height: 1.55;
}
@media (max-width: 900px) {
  .hero { padding: 3.5rem 0 3rem; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-visual { order: -1; }
  .hero-illust { width: min(100%, 360px); }
}

/* Sections */
.section {
  padding: 5rem 0;
}
.section-alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}
.section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.55rem, 2.8vw, 2rem);
  letter-spacing: -0.03em;
  line-height: 1.22;
}
.section-intro {
  margin: 0 0 2.25rem;
  color: var(--text-muted);
  max-width: 42rem;
  font-size: 1.0625rem;
  line-height: 1.65;
}
.subhead {
  margin: 2rem 0 1rem;
  font-size: 1.15rem;
  letter-spacing: -0.015em;
}
.section p { color: var(--text-muted); }
.section p strong, .section li strong { color: var(--text); }
.emphasis { margin-top: 1.25rem; }

.callout {
  margin-top: 1.5rem;
  padding: 1.25rem 1.35rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.callout h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}
.callout p { margin: 0; }
.callout-muted {
  background: var(--bg-alt);
  box-shadow: none;
}
.callout-accent {
  background: var(--primary-soft);
  border-color: #bfdbfe;
  box-shadow: none;
}
.callout-accent p { color: var(--text); }

/* Steps */
.steps {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}
@media (min-width: 900px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
  .steps li {
    grid-template-columns: 1fr;
    align-content: start;
  }
}
.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.35rem 1.4rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.steps h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}
.steps p { margin: 0; }

/* Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  margin-bottom: 0.5rem;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  padding: 1rem 1.15rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}
th {
  background: var(--bg-alt);
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
td { color: var(--text-muted); }
tr:last-child td { border-bottom: none; }
td:first-child { width: 10rem; color: var(--text); }

.bullet-list {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}
.bullet-list li { margin-bottom: 0.4rem; }

/* Pricing — 3-column free vs paid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.35rem;
  margin: 1.75rem 0 1.5rem;
  align-items: stretch;
}
.pricing-compare {
  max-width: 1120px;
  margin-inline: auto;
}
.price-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  padding: 1.75rem 1.5rem 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.price-card.featured {
  border-color: #60a5fa;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(37, 99, 235, 0.12);
  position: relative;
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 28%);
}
@media (min-width: 961px) {
  .price-card.featured {
    transform: translateY(-6px);
  }
}
.price-card-free {
  background: linear-gradient(180deg, #f8fafc 0%, #fff 45%);
}
.badge {
  display: inline-block;
  align-self: flex-start;
  margin: 0 0 0.85rem;
  padding: 0.25rem 0.7rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 999px;
}
.badge-muted {
  color: var(--text-soft);
  background: var(--bg-alt);
}
.badge-free {
  color: #166534;
  background: #dcfce7;
}
.price-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.25rem;
  letter-spacing: -0.025em;
  line-height: 1.25;
}
.price {
  margin: 0 0 0.75rem;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.price .amount {
  font-size: 2.35rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--text);
  line-height: 1;
}
.price .amount-free {
  color: #166534;
}
.price .period {
  font-size: 0.85rem;
  color: var(--text-soft);
}
.price-desc {
  margin: 0 0 0.95rem;
  font-size: 0.925rem;
  line-height: 1.55;
  min-height: 2.8em;
}
.what-you-get-label {
  margin: 0 0 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
}
.price-card ul,
.price-card .what-you-get {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex: 0 0 auto;
}
.price-card li { margin-bottom: 0.35rem; }
.use-case {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--text-soft);
}
.pricing-note {
  font-size: 0.9rem;
  color: var(--text-soft);
  max-width: 48rem;
}
.pricing-footnote {
  margin: 0.25rem auto 0;
  max-width: 42rem;
  text-align: center;
  font-size: 0.825rem;
  line-height: 1.5;
}

/* Deliverable preview thumbnails */
.preview-card {
  display: block;
  margin: 0 0 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-alt);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  flex: 1 1 auto;
}
a.preview-card:hover {
  border-color: #93c5fd;
  box-shadow: var(--shadow);
  color: inherit;
  transform: translateY(-1px);
}
.preview-card-free {
  pointer-events: none;
  opacity: 0.95;
}
.preview-chrome {
  display: flex;
  gap: 0.35rem;
  padding: 0.45rem 0.65rem;
  background: #e2e8f0;
  border-bottom: 1px solid var(--border);
}
.preview-chrome span {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: #94a3b8;
}
.preview-body {
  padding: 0.85rem 0.9rem 1rem;
}
.preview-kicker {
  margin: 0 0 0.25rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-soft);
}
.preview-title {
  margin: 0 0 0.55rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.preview-line,
.preview-meta {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.preview-meta { margin-top: 0.35rem; color: var(--text-soft); }
.preview-fake-rows {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}
.preview-fake-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.5rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.preview-fake-row .dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  flex-shrink: 0;
}
.preview-fake-row .dot.detected { background: #22c55e; }
.preview-fake-row .dot.not { background: #94a3b8; }
.preview-fake-row .dot.unclear { background: #f59e0b; }
.preview-checks {
  list-style: none;
  margin: 0 0 0.65rem;
  padding: 0;
}
.preview-checks li {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  margin: 0 0 0.4rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.preview-checks .check-box {
  width: 0.85rem;
  height: 0.85rem;
  margin-top: 0.1rem;
  border: 1.5px solid #94a3b8;
  border-radius: 3px;
  background: #fff;
  flex-shrink: 0;
}
.preview-cta {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}
.preview-body-report {
  background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
}
.preview-body-guide {
  background: linear-gradient(180deg, #f0fdf4 0%, #f8fafc 100%);
}
.sample-link-row {
  margin: 0 0 1rem;
  font-size: 0.95rem;
}
.sample-link-row a {
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}
.sample-link-row a:hover { text-decoration: underline; }

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.faq-list details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0;
  overflow: hidden;
}
.faq-list summary {
  padding: 1rem 1.15rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-soft);
  flex-shrink: 0;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list details[open] summary {
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.faq-list details p {
  margin: 0;
  padding: 1rem 1.15rem 1.15rem;
  font-size: 0.975rem;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: #cbd5e1;
  padding: 3rem 0 2.5rem;
  font-size: 0.9rem;
}
.site-footer a { color: #93c5fd; }
.site-footer a:hover { color: #bfdbfe; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}
.footer-links a {
  font-weight: 500;
  text-decoration: none;
}
.footer-links a:hover { text-decoration: underline; }
.disclaimer, .privacy-line {
  margin: 0 0 1rem;
  line-height: 1.6;
  color: #94a3b8;
  max-width: 52rem;
}
.disclaimer strong { color: #e2e8f0; }
.copyright {
  margin: 1.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid #1e293b;
  font-size: 0.8rem;
  color: #64748b;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.45rem;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.15s, opacity 0.15s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* Responsive */
@media (max-width: 960px) {
  .pricing-grid { grid-template-columns: 1fr; }
  .price-desc { min-height: 0; }
}
@media (max-width: 820px) {
  .header-inner {
    flex-wrap: wrap;
    position: relative;
  }
  .logo { order: 1; }
  .header-actions {
    order: 2;
    margin-left: auto;
  }
  .nav-toggle { display: flex; }
  .nav {
    display: none;
    flex-direction: column;
    gap: 0;
    width: 100%;
    order: 3;
    padding: 0.5rem 0 0.75rem;
    border-top: 1px solid var(--border);
    margin-top: 0.35rem;
  }
  .nav.is-open { display: flex; }
  .nav a {
    padding: 0.7rem 0.25rem;
    border-bottom: 1px solid var(--border);
  }
  .nav a:last-child { border-bottom: none; }
  .header-cta {
    display: inline-flex !important;
    white-space: nowrap;
  }
  .hero { padding: 3.25rem 0 2.75rem; }
  .section { padding: 3.25rem 0; }
  .price-card { padding: 1.45rem 1.25rem 1.35rem; }
}

@media (max-width: 480px) {
  .cta-row .btn { width: 100%; }
  .header-cta {
    padding: 0.45rem 0.7rem;
    font-size: 0.78rem;
  }
  th, td { padding: 0.85rem; }
  td:first-child { width: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn,
  .price-card,
  .resource-card,
  .why-card,
  .preview-card { transition: none; }
  .resource-card:hover,
  .price-card.featured { transform: none; }
}

/* Legal pages */
.legal h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}
.legal-lede {
  margin: 0 0 2rem;
  font-size: 1.05rem;
  color: var(--text-muted);
}
.legal h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.2rem;
  letter-spacing: -0.015em;
}
.legal p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}
.legal .bullet-list {
  margin: 0 0 1rem;
}
.legal .eyebrow {
  margin-bottom: 0.75rem;
}
.payments-soon {
  margin-bottom: 1.5rem;
}

/* Article / guide pages */
.breadcrumb {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--text-soft);
}
.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  align-items: center;
}
.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: #cbd5e1;
}
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--primary); text-decoration: underline; }

.article {
  max-width: var(--narrow);
}
.article h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}
.article-meta {
  margin: 0 0 1.75rem;
  font-size: 0.875rem;
  color: var(--text-soft);
}
.article h2 {
  margin: 2.25rem 0 0.85rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}
.article h3 {
  margin: 1.5rem 0 0.6rem;
  font-size: 1.1rem;
}
.article p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}
.article .lede {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}
.article .bullet-list,
.article ol.numbered {
  margin: 0 0 1.25rem;
  padding-left: 1.25rem;
  color: var(--text-muted);
}
.article .bullet-list li,
.article ol.numbered li {
  margin-bottom: 0.5rem;
}
.article-cta {
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--primary-soft);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius);
}
.article-cta p { margin: 0 0 1rem; color: var(--text); }
.article-cta .cta-row { margin-bottom: 0; }
.related-guides {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.related-guides h2 {
  margin-top: 0;
  font-size: 1.15rem;
}
.related-guides ul {
  margin: 0.75rem 0 0;
  padding-left: 1.15rem;
  color: var(--text-muted);
}
.related-guides li { margin-bottom: 0.4rem; }



/* Why check SynthID */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.15rem;
  margin-top: 1.5rem;
}
.why-card {
  padding: 1.5rem 1.5rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.why-card:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-lg);
}
.why-icon {
  margin: 0 0 0.85rem;
  line-height: 0;
  width: 40px;
  height: 40px;
}
.why-icon img {
  width: 40px;
  height: 40px;
  display: block;
}
.why-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  letter-spacing: -0.015em;
}
.why-card p {
  margin: 0;
  font-size: 0.925rem;
  color: var(--text-muted);
}
.why-limits {
  margin-top: 1.5rem;
}
.why-limits .bullet-list {
  margin: 0.5rem 0 0;
}
.why-cta-line {
  margin: 1.25rem 0 0;
  font-size: 0.975rem;
  color: var(--text-muted);
}
@media (max-width: 720px) {
  .why-grid { grid-template-columns: 1fr; }
}

/* Resources grid on homepage */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1.75rem;
}
.resource-card {
  display: block;
  padding: 1.5rem 1.5rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.resource-card:hover {
  border-color: #93c5fd;
  box-shadow: var(--shadow-lg);
  color: inherit;
  transform: translateY(-2px);
}
.resource-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  letter-spacing: -0.015em;
  color: var(--text);
}
.resource-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.resource-card .more {
  display: inline-block;
  margin-top: 0.85rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
}
.resource-icon {
  margin: 0 0 0.85rem;
  width: 40px;
  height: 40px;
  line-height: 0;
}
.resource-icon img {
  width: 40px;
  height: 40px;
  display: block;
}

/* What is SynthID diagram */
.what-figure {
  margin: 1.75rem 0 0.5rem;
  padding: 1.25rem 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}
.what-figure img {
  margin: 0 auto;
  width: min(100%, 560px);
  height: auto;
}
.what-figure figcaption {
  margin: 0.85rem 0 0;
  font-size: 0.85rem;
  color: var(--text-soft);
  line-height: 1.45;
  max-width: 36rem;
  margin-inline: auto;
}

/* Pricing preview thumbs */
.preview-thumb {
  margin: 0 0 0.65rem;
  line-height: 0;
}
.preview-thumb svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}
.preview-thumb-detector svg,
.preview-thumb-report svg,
.preview-thumb-guide svg {
  background: transparent;
}

@media (max-width: 820px) {
  .resource-grid { grid-template-columns: 1fr; }
}

/* Sample deliverable pages */
.sample-page .lede { margin-bottom: 1.25rem; }
.sample-doc {
  margin: 1.5rem 0 2rem;
  padding: 1.5rem 1.35rem 1.75rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  box-shadow: var(--shadow-lg);
}
.sample-doc-header {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.sample-doc-brand {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.sample-doc-title {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}
.sample-doc-sub {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.sample-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem 1.25rem;
  margin: 0;
}
.sample-meta div { margin: 0; }
.sample-meta dt {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-soft);
}
.sample-meta dd {
  margin: 0.15rem 0 0;
  font-size: 0.9rem;
  color: var(--text);
}
.sample-doc h3 {
  margin: 1.5rem 0 0.75rem;
  font-size: 1.05rem;
}
.table-wrap {
  overflow-x: auto;
  margin: 0.5rem 0 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.sample-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 0;
}
.sample-table th,
.sample-table td {
  padding: 0.7rem 0.75rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}
.sample-table th {
  background: var(--bg-alt);
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.sample-table td { color: var(--text-muted); }
.sample-table tr:last-child td { border-bottom: none; }
.sample-table code {
  font-size: 0.8rem;
  color: var(--text);
  word-break: break-all;
}
.result-pill {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.result-detected {
  color: #166534;
  background: #dcfce7;
}
.result-not {
  color: #334155;
  background: #e2e8f0;
}
.result-unclear {
  color: #92400e;
  background: #fef3c7;
}
.template-box {
  margin: 0.75rem 0 1rem;
  padding: 1rem 1.1rem;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border: 1px dashed #cbd5e1;
}
.template-box p {
  margin: 0 0 0.75rem;
  font-size: 0.925rem;
  color: var(--text-muted);
}
.template-box p:last-child { margin-bottom: 0; }

.pdf-sheet {
  background: linear-gradient(#fff, #fff), #f8fafc;
  border: 1px solid #cbd5e1;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}
.check-list {
  list-style: none;
  margin: 0.5rem 0 1rem;
  padding: 0;
}
.check-list li {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  margin-bottom: 0.55rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.check-box {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  margin-top: 0.2rem;
  border: 1.5px solid #94a3b8;
  border-radius: 3px;
  background: #fff;
}

@media (max-width: 640px) {
  .sample-meta { grid-template-columns: 1fr; }
  .sample-doc { padding: 1.15rem 1rem 1.35rem; }
}

.order-flow {
  margin: 1.75rem 0 0;
  padding: 1.5rem 1.5rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.order-flow h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}
.order-flow ol {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}
.order-flow li { margin-bottom: 0.45rem; }
.order-flow p {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}
.scope-note {
  margin: 0 0 0.85rem;
  font-size: 0.85rem;
  color: var(--text-soft);
  line-height: 1.5;
}

/* Ensure mobile nav toggle wins over base display:none */
@media (max-width: 820px) {
  .nav-toggle { display: flex; }
}