* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --ink: #172226;
  --muted: #5b686d;
  --paper: #f7f4ee;
  --panel: #ffffff;
  --line: #d8d4ca;
  --brand: #204e5f;
  --brand-dark: #122f3b;
  --accent: #b85f2e;
  --soft: #e7f0ed;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

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

a:hover {
  color: var(--accent);
}

.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.topline {
  background: var(--brand-dark);
  color: #dce9e7;
  font-size: 0.85rem;
  padding: 0.45rem max(1rem, calc((100vw - 1120px) / 2));
}

.masthead {
  align-items: center;
  display: flex;
  gap: 1.25rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1120px;
  padding: 1rem;
}

.brand {
  color: var(--ink);
  text-decoration: none;
}

.brand strong {
  display: block;
  font-size: 1.35rem;
  letter-spacing: 0;
}

.brand span {
  color: var(--muted);
  display: block;
  font-size: 0.9rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
}

.nav a {
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--ink);
  padding: 0.48rem 0.7rem;
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

main {
  margin: 0 auto;
  max-width: 1200px;
  padding: 1.25rem 1rem 4rem;
}

.hero {
  background: var(--brand-dark);
  color: #fff;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  margin-top: 1rem;
  padding: 2rem;
}

.hero h1,
.page-title h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.05;
  margin: 0;
}

.hero p {
  color: #dce9e7;
  font-size: 1.1rem;
  max-width: 60ch;
}

.hero img,
.feature-image {
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: block;
  max-width: 100%;
}

.hero-plain {
  background: var(--panel);
  border: 1px solid var(--line);
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  margin-top: 1rem;
  padding: 2rem;
}

.hero-plain p {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 68ch;
}

.quick-links {
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 1rem;
}

.quick-links h2 {
  font-size: 1rem;
  margin-top: 0;
}

.quick-links a {
  color: var(--brand-dark);
  display: block;
  margin: 0.45rem 0;
}

.section {
  margin-top: 2rem;
}

.section h2,
.page-title h1,
article h2 {
  color: var(--brand-dark);
}

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

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

.card,
.notice,
article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.card {
  padding: 1rem;
}

.card h3 {
  margin-top: 0;
}

.card p {
  color: var(--muted);
}

.card img,
.media-card img {
  background: #fff;
  border: 1px solid var(--line);
  display: block;
  height: auto;
  margin: 0 0 0.8rem;
  max-width: 100%;
}

.can-enlarge {
  cursor: zoom-in;
}

.card a.primary,
.button {
  background: var(--brand);
  border-radius: 4px;
  color: #fff;
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.55rem 0.75rem;
  text-decoration: none;
}

.notice {
  background: var(--soft);
  padding: 1rem;
}

.visual-board {
  background: #fff;
  border: 1px solid var(--line);
  margin: 1rem 0;
  overflow: auto;
  padding: 0.75rem;
}

.visual-board img {
  display: block;
  height: auto;
  max-width: none;
  min-width: 880px;
  width: 100%;
}

.visual-board.compact img {
  min-width: 680px;
}


.figure-caption {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 0.45rem;
}

.resource-strip {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.visual-tile {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  display: block;
  min-height: 100%;
  padding: 0.8rem;
  text-decoration: none;
}

.visual-tile img {
  aspect-ratio: 16 / 9;
  background: #fff;
  border: 1px solid var(--line);
  display: block;
  margin-bottom: 0.7rem;
  object-fit: contain;
  width: 100%;
}

.visual-tile strong {
  color: var(--ink);
  display: block;
}

.visual-tile span {
  color: var(--muted);
  display: block;
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.latest-resources {
  background: linear-gradient(135deg, var(--brand-dark), #1d5363);
  border-radius: 4px;
  color: #fff;
  padding: clamp(1.25rem, 3vw, 2rem);
}

.section-heading-row {
  align-items: end;
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.section-heading-row h2 {
  color: #fff;
  margin: 0.15rem 0 0.35rem;
}

.section-heading-row p:not(.eyebrow) {
  color: #dce9e7;
  margin: 0;
  max-width: 72ch;
}

.eyebrow,
.resource-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.latest-resources .eyebrow {
  color: #f2bd96;
  margin: 0;
}

.text-link {
  color: #fff;
  flex: none;
  font-weight: 700;
}

.text-link:hover {
  color: #f2bd96;
}

.latest-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.latest-card {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: var(--ink);
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) minmax(0, 1.2fr);
  overflow: hidden;
  padding: 0;
}

.latest-card-featured {
  grid-column: 1 / -1;
  grid-template-columns: minmax(260px, 1.1fr) minmax(0, 1fr);
}

.latest-card-image {
  background: #eef3f1;
  border-right: 1px solid var(--line);
  min-height: 190px;
  padding: 0.8rem;
}

.latest-card-featured .latest-card-image {
  min-height: 245px;
}

.latest-card-image img {
  height: 100%;
  margin: 0;
  object-fit: contain;
  width: 100%;
}

.latest-card-content {
  align-self: center;
  padding: 1.25rem;
}

.latest-card-content h3 {
  color: var(--brand-dark);
  font-size: 1.3rem;
  margin: 0.35rem 0 0.55rem;
}

.latest-card-content p {
  color: var(--muted);
  margin: 0;
}

.latest-card-content .resource-label {
  color: var(--accent);
}

.page-title {
  border-bottom: 1px solid var(--line);
  margin: 1rem 0 1.5rem;
  padding-bottom: 1rem;
}

.page-title p {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 75ch;
}

article {
  padding: 1.25rem;
}

article h2:first-child {
  margin-top: 0;
}

article p,
article li {
  max-width: 78ch;
}

.lead {
  color: var(--muted);
  font-size: 1.15rem;
}

.two-col {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr) 320px;
}

.link-list {
  list-style: none;
  padding: 0;
}

.link-list li {
  border-top: 1px solid var(--line);
  padding: 0.7rem 0;
}

.downloads {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.download {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.8rem;
  text-decoration: none;
}

.download strong,
.download span {
  display: block;
}

.download span {
  color: var(--muted);
  font-size: 0.9rem;
}

.split-band {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.7fr);
}

.callout {
  background: var(--soft);
  border-left: 4px solid var(--accent);
  padding: 1rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

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

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

th,
td {
  border: 1px solid var(--line);
  padding: 0.7rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--soft);
}

.risk-table td:first-child {
  font-weight: 700;
  width: 22%;
}

.crumbs {
  color: var(--muted);
  font-size: 0.85rem;
  margin: -0.75rem 0 1.25rem;
}

.crumbs a {
  color: var(--muted);
}

.fivew-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.fivew-grid .card h3 {
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.section > article + article {
  margin-top: 1.25rem;
}

.domain-guide-nav {
  align-items: center;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
}

.site-footer {
  align-items: center;
  background: var(--brand-dark);
  color: #dce9e7;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  padding: 1.5rem max(1rem, calc((100vw - 1120px) / 2));
}

.visitor-count {
  color: #aebfbe;
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  opacity: 0.72;
  white-space: nowrap;
}

.risk-domain-model-page,
.privacy-domain-model-page,
.operating-model-page,
.security-services-model-page,
.csdm-model-page {
  max-width: 1600px;
}

.domain-model-explorer-heading {
  align-items: flex-end;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.domain-model-explorer-heading h2,
.domain-model-explorer-heading p {
  margin: 0;
}

.domain-model-explorer-heading h2 {
  color: var(--brand-dark);
}

.domain-model-explorer-heading p {
  color: var(--muted);
  margin-top: 0.25rem;
}

.domain-model-explorer-heading .button {
  flex: none;
  margin: 0;
}

.domain-model-explorer-frame {
  background: #fff;
  border: 1px solid var(--line);
  display: block;
  height: 1120px;
  width: 100%;
}

.domain-model-note h2 {
  color: var(--brand-dark);
  margin-top: 0;
}

.risk-domain-model-page .downloads,
.privacy-domain-model-page .downloads,
.operating-model-page .downloads,
.security-services-model-page .downloads,
.csdm-model-page .downloads {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.image-lightbox {
  align-items: stretch;
  background: rgba(10, 18, 22, 0.94);
  border: 0;
  color: #fff;
  cursor: zoom-out;
  display: none;
  inset: 0;
  margin: 0;
  max-height: none;
  max-width: none;
  padding: 0;
  position: fixed;
  width: 100%;
  z-index: 50;
}

.image-lightbox[open] {
  display: flex;
}

.image-lightbox::backdrop {
  background: rgba(10, 18, 22, 0.94);
}

.lightbox-frame {
  display: grid;
  gap: 0.75rem;
  grid-template-rows: auto 1fr;
  height: 100vh;
  padding: 1rem;
  width: 100vw;
}

.lightbox-bar {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
}

.lightbox-title {
  font-size: 0.95rem;
}

.lightbox-close {
  background: #fff;
  border: 0;
  border-radius: 4px;
  color: var(--brand-dark);
  cursor: pointer;
  font: inherit;
  padding: 0.5rem 0.7rem;
}

.lightbox-scroll {
  background: #fff;
  overflow: auto;
}

.lightbox-scroll img {
  display: block;
  height: auto;
  margin: 0 auto;
  max-width: none;
  min-width: min(100%, 1100px);
  width: auto;
}

@media (max-width: 820px) {
  .masthead,
  .hero,
  .hero-plain,
  .split-band,
  .two-col {
    display: block;
  }

  .nav {
    justify-content: flex-start;
    margin-top: 1rem;
  }

  .grid,
  .grid.two,
  .downloads,
  .resource-strip,
  .latest-grid {
    grid-template-columns: 1fr;
  }

  .section-heading-row {
    align-items: start;
    display: grid;
  }

  .latest-card,
  .latest-card-featured {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .latest-card-image,
  .latest-card-featured .latest-card-image {
    border-bottom: 1px solid var(--line);
    border-right: 0;
    min-height: 200px;
  }

  .hero {
    padding: 1.25rem;
  }

  .domain-model-explorer-heading {
    align-items: flex-start;
    display: flex;
    flex-direction: column;
  }

  .domain-model-explorer-frame {
    height: 1680px;
  }

  .risk-domain-model-page .downloads,
  .privacy-domain-model-page .downloads,
  .operating-model-page .downloads,
  .security-services-model-page .downloads,
  .csdm-model-page .downloads {
    grid-template-columns: 1fr;
  }
}