:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-strong: #eef3fb;
  --surface-accent: #e7edf8;
  --text: #122033;
  --muted: #5b6b82;
  --border: #d6dfeb;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
  --header-bg: rgba(245, 247, 251, 0.9);
  --link: #0f5bd7;
  --identity: #6d28d9;
  --endpoint: #0f766e;
  --cloud: #0f67a6;
  --siem: #9a3412;
  --compliance: #7c3f00;
  --collab: #1d4ed8;
  font-family: Inter, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body[data-theme="dark"] {
  color-scheme: dark;
  --bg: #09111d;
  --surface: #111c2d;
  --surface-strong: #172438;
  --surface-accent: #1f2d43;
  --text: #edf3fb;
  --muted: #b2c0d4;
  --border: #2b3d56;
  --shadow: 0 24px 70px rgba(2, 8, 23, 0.48);
  --header-bg: rgba(9, 17, 29, 0.9);
  --link: #8ab4ff;
}

@media (prefers-color-scheme: dark) {
  body:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #09111d;
    --surface: #111c2d;
    --surface-strong: #172438;
    --surface-accent: #1f2d43;
    --text: #edf3fb;
    --muted: #b2c0d4;
    --border: #2b3d56;
    --shadow: 0 24px 70px rgba(2, 8, 23, 0.48);
    --header-bg: rgba(9, 17, 29, 0.9);
    --link: #8ab4ff;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: linear-gradient(180deg, var(--surface-strong) 0, var(--bg) 18rem, var(--bg) 100%);
  color: var(--text);
  line-height: 1.6;
}

img {
  max-width: 100%;
}

button,
a {
  font: inherit;
}

a {
  color: var(--link);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  background: var(--text);
  color: var(--bg);
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  width: min(1200px, calc(100% - 1.5rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}

.header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 1.25rem;
}

.header-copy h1 {
  margin: 0.35rem 0 0.6rem;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.1;
  max-width: 16ch;
}

.eyebrow,
.section-kicker,
.card-category {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.lede,
.section-note {
  margin: 0;
  color: var(--muted);
  max-width: 64ch;
}

.theme-toggle {
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.8rem 1.1rem;
  box-shadow: var(--shadow);
  cursor: pointer;
}

.page-content {
  padding: 1.5rem 0 4rem;
}

.hero-panel,
.quick-reference-panel,
.catalog-panel,
.toc-inner {
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--border);
  border-radius: 1.4rem;
  box-shadow: var(--shadow);
}

.hero-panel,
.quick-reference-panel,
.catalog-panel {
  padding: 1.25rem;
}

.hero-grid {
  display: grid;
  gap: 1rem;
}

.hero-grid h2,
.section-heading h2,
.category-heading h3 {
  margin: 0.25rem 0 0.5rem;
  line-height: 1.15;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.stat-card {
  padding: 1rem;
  border-radius: 1rem;
  background: var(--surface-accent);
  border: 1px solid var(--border);
  text-align: center;
}

.stat-value {
  display: block;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--muted);
}

.quick-reference-panel {
  margin-top: 1.25rem;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.table-wrap {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.comparison-table th,
.comparison-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.comparison-table th {
  font-size: 0.9rem;
  background: var(--surface-accent);
}

.content-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.toc-panel {
  align-self: start;
}

.toc-inner {
  padding: 1rem;
}

.toc-inner h2 {
  margin: 0 0 0.85rem;
  font-size: 1rem;
}

.toc-nav {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.15rem;
}

.toc-link {
  display: flex;
  flex-direction: column;
  min-width: 10rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}

.toc-link small {
  color: var(--muted);
}

.category-stack {
  display: grid;
  gap: 1.1rem;
}

.category-section {
  border: 1px solid var(--border);
  border-left-width: 0.6rem;
  border-radius: 1.2rem;
  background: var(--surface);
  padding: 1rem;
}

.category-section[data-category="Identity"] {
  border-left-color: var(--identity);
}

.category-section[data-category="Endpoint"] {
  border-left-color: var(--endpoint);
}

.category-section[data-category="Cloud"] {
  border-left-color: var(--cloud);
}

.category-section[data-category="SIEM/SOAR"] {
  border-left-color: var(--siem);
}

.category-section[data-category="Compliance"] {
  border-left-color: var(--compliance);
}

.category-section[data-category="Email/Collab"] {
  border-left-color: var(--collab);
}

.category-heading {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.category-heading p:last-child {
  margin: 0;
  color: var(--muted);
}

.product-grid {
  display: grid;
  gap: 1rem;
}

.product-card {
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.card-header h4,
.card-body h5 {
  margin: 0.25rem 0 0.5rem;
}

.card-summary,
.callout-block p,
.card-footer {
  margin: 0;
  color: var(--muted);
}

.card-body {
  display: grid;
  gap: 1rem;
}

.card-body ul {
  margin: 0;
  padding-left: 1.15rem;
}

.callout-block {
  padding: 0.9rem 1rem;
  border-radius: 0.9rem;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.confusion-block {
  background: color-mix(in srgb, var(--surface-accent) 85%, transparent);
}

.card-footer a {
  font-weight: 700;
  text-decoration: none;
}

.error-message {
  padding: 1rem;
  border-radius: 1rem;
  background: #fee2e2;
  color: #991b1b;
}

.site-footer {
  padding: 0 0 2.5rem;
  text-align: center;
  color: var(--muted);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--link) 60%, white);
  outline-offset: 3px;
}

@media (min-width: 720px) {
  .hero-panel,
  .quick-reference-panel,
  .catalog-panel {
    padding: 1.5rem;
  }

  .hero-grid,
  .category-heading,
  .section-heading {
    grid-template-columns: 2fr 1fr;
    align-items: start;
  }

  .hero-grid,
  .category-heading,
  .product-grid {
    display: grid;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .content-grid {
    grid-template-columns: 280px minmax(0, 1fr);
    align-items: start;
  }

  .toc-inner {
    position: sticky;
    top: 6.6rem;
  }

  .toc-nav {
    flex-direction: column;
    overflow: visible;
  }

  .toc-link {
    min-width: 0;
  }

  .catalog-panel {
    min-width: 0;
  }
}

@media print {
  :root,
  body,
  body[data-theme="dark"] {
    color-scheme: light;
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-strong: #ffffff;
    --surface-accent: #ffffff;
    --text: #000000;
    --muted: #2f2f2f;
    --border: #bfbfbf;
    --shadow: none;
    --header-bg: #ffffff;
    --link: #000000;
  }

  .site-header,
  .site-footer {
    position: static;
    background: #ffffff;
    border: 0;
  }

  .theme-toggle {
    display: none;
  }

  .shell {
    width: 100%;
  }

  .hero-panel,
  .quick-reference-panel,
  .catalog-panel,
  .toc-inner,
  .product-card,
  .callout-block,
  .category-section {
    box-shadow: none;
    break-inside: avoid;
  }

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

  .toc-nav {
    flex-wrap: wrap;
  }

  .comparison-table {
    min-width: 0;
    font-size: 0.88rem;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  a {
    color: #000000;
    text-decoration: none;
  }
}