:root {
  color-scheme: light;
  --ink: #1b2733;
  --muted: #5b6875;
  --line: #d8e0e8;
  --paper: #ffffff;
  --soft: #f4f7fa;
  --blue: #1f5f8b;
  --blue-dark: #173c5d;
  --teal: #327a78;
  --green: #4b7f52;
  --gold: #a46c1b;
  --red: #944848;
  --shadow: 0 16px 40px rgba(28, 44, 60, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, #eef4f7 0, #f7f9fb 420px, var(--soft) 100%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 32px;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.topbar h1 { margin: 0; font-size: 22px; }
.eyebrow {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 12px;
  color: var(--blue);
  font-weight: 700;
}
nav { display: flex; flex-wrap: wrap; gap: 14px; }
nav a { color: var(--ink); text-decoration: none; font-weight: 650; font-size: 14px; }

main { max-width: 1440px; margin: 0 auto; padding: 42px 40px 88px; }
section { margin: 0 0 92px; }

.hero {
  display: grid;
  grid-template-columns: minmax(360px, .85fr) minmax(420px, 1.15fr);
  gap: 70px;
  align-items: center;
  padding: 74px 68px;
  background: #fff;
  border: 1px solid #e2ebf2;
  box-shadow: var(--shadow);
}
.hero h2 { margin: 0 0 18px; font-size: 54px; line-height: 1.02; max-width: 720px; }
.hero p { max-width: 680px; color: var(--muted); font-size: 20px; line-height: 1.6; }

.hero-art {
  margin: 0;
  align-self: center;
}
.hero-art svg {
  display: block;
  width: 100%;
  max-height: 500px;
}
.hero-art .grid-lines path,
.hero-art .blob {
  transform-origin: center;
}

.snapshot {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 26px;
  align-items: center;
  padding: 20px 4px 6px;
}
.snapshot h2 { font-size: 24px; }

.hero-graphic {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 0;
}
.hero-graphic div {
  position: relative;
  min-height: 118px;
  padding: 18px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 5px solid var(--teal);
  box-shadow: 0 10px 24px rgba(28,44,60,.05);
}
.hero-graphic div:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -13px;
  width: 16px;
  height: 2px;
  background: var(--teal);
}
.hero-graphic div:not(:last-child)::before {
  content: "";
  position: absolute;
  top: calc(50% - 4px);
  right: -15px;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--teal);
  border-right: 2px solid var(--teal);
  transform: rotate(45deg);
}
.hero-graphic strong { display: block; margin-bottom: 8px; font-size: 14px; }
.hero-graphic span { display: block; color: var(--muted); font-size: 13px; line-height: 1.35; }

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 14px;
  margin-top: -24px;
}
.stat {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 18px;
  box-shadow: 0 8px 22px rgba(28,44,60,.05);
}
.stat strong { display: block; font-size: 28px; color: var(--blue); }
.stat span { color: var(--muted); font-size: 13px; }

.section-title { margin-bottom: 16px; }
h2 { margin: 0 0 8px; font-size: 28px; }
h3 { margin: 0 0 12px; font-size: 18px; }
.section-title p { margin: 0; color: var(--muted); max-width: 920px; line-height: 1.55; }

.explainer-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.explainer-band article {
  background: var(--paper);
  border-left: 5px solid var(--teal);
  padding: 30px;
  box-shadow: var(--shadow);
}
.explainer-band h2 { font-size: 22px; }
.explainer-band p:last-child { color: var(--muted); line-height: 1.55; }

.one-minute {
  padding: 56px;
  background: #173c5d;
  color: #fff;
  box-shadow: var(--shadow);
}
.one-minute .eyebrow { color: #9bd3d0; }
blockquote {
  margin: 0;
  max-width: 1120px;
  font-size: 24px;
  line-height: 1.45;
  font-weight: 650;
}

.visual-guide {
  padding: 60px;
  background: #fff;
  border: 1px solid #e2ebf2;
  box-shadow: var(--shadow);
}
.visual-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 28px;
}
.visual-grid article {
  padding: 18px 18px 22px;
  background: #f8fbfd;
  border: 1px solid #dce8ef;
}
.visual-grid svg {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: 18px;
}
.visual-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}
.visual-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.flow {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

.aha-map {
  padding: 46px;
  background: #eef7f6;
  border: 1px solid #d5e7e4;
}
.aha-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.aha-grid article {
  position: relative;
  min-height: 210px;
  padding: 24px;
  background: #fff;
  border: 1px solid #d5e7e4;
}
.aha-grid article:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -15px;
  width: 18px;
  height: 2px;
  background: var(--teal);
}
.aha-grid article:not(:last-child)::before {
  content: "";
  position: absolute;
  top: calc(50% - 4px);
  right: -17px;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--teal);
  border-right: 2px solid var(--teal);
  transform: rotate(45deg);
  z-index: 2;
}
.aha-grid span {
  display: inline-block;
  margin-bottom: 16px;
  padding: 5px 9px;
  background: #dff0ee;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}
.aha-grid strong { display: block; margin-bottom: 10px; font-size: 18px; }
.aha-grid p { margin: 0; color: var(--muted); line-height: 1.5; }
.flow article, .card, .stage, .asset, .mini-row, .source-card, .asset-pipeline article, .platform-flow article {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 20px;
  box-shadow: 0 10px 28px rgba(28,44,60,.05);
}
.flow span {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-bottom: 12px;
  color: #fff;
  background: var(--blue);
  font-weight: 800;
}
.flow strong { display: block; margin-bottom: 8px; }
.flow p, .card p, .stage p, .asset p, .source-card p { margin: 0; color: var(--muted); line-height: 1.45; }

.doc-sequence {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}
.doc-sequence article {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 5px solid var(--blue);
  padding: 22px;
  min-height: 250px;
  box-shadow: 0 10px 28px rgba(28,44,60,.05);
}
.doc-sequence span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--blue);
  font-weight: 900;
  font-size: 13px;
}
.doc-sequence strong { display: block; margin-bottom: 10px; }
.doc-sequence p { margin: 0; color: var(--muted); line-height: 1.45; }

.source-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.illustration-panel {
  margin: 24px 0 28px;
  padding: 28px 34px;
  background: #fff;
  border: 1px solid #dce8ef;
  box-shadow: 0 12px 28px rgba(28,44,60,.05);
}
.illustration-panel svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 260px;
}
.campaign-illustration {
  background: linear-gradient(180deg, #fff 0%, #f8fbfd 100%);
}
.platform-illustration {
  background: #f3faf8;
}
.source-card {
  position: relative;
  overflow: hidden;
}
.source-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--blue);
}
.source-card strong { display: block; margin-bottom: 8px; padding-left: 6px; }
.source-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.source-meta span {
  padding: 4px 8px;
  background: #edf4f8;
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.card strong { display: block; margin-bottom: 8px; }
.card { border-top: 4px solid var(--blue); }
.tag {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 8px;
  background: #e7f0f7;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
}

.rule-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.rule-strip div {
  padding: 22px;
  background: #19384f;
  color: #fff;
}
.rule-strip strong { display: block; margin-bottom: 6px; }
.rule-strip span { color: #cde0ec; font-size: 14px; }

.stage-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}
.trust-rungs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 22px;
}
.trust-rungs div {
  padding: 18px 16px;
  background: #e8f1ef;
  border: 1px solid #c9dcd8;
}
.trust-rungs strong { display: block; color: var(--teal); }
.trust-rungs span { color: var(--muted); font-size: 13px; }
.stage h3 { color: var(--blue); }
.stage {
  min-height: 250px;
  border-top: 5px solid var(--green);
}
.stage .stage-label {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.asset-pipeline, .platform-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}
.platform-flow { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 28px; }
.asset-pipeline article, .platform-flow article {
  position: relative;
  border-top: 4px solid var(--gold);
}
.asset-pipeline article:not(:last-child)::after {
  content: "->";
  position: absolute;
  right: -13px;
  top: 42%;
  color: var(--gold);
  font-weight: 900;
  z-index: 2;
}
.asset-pipeline strong, .platform-flow strong { display: block; margin-bottom: 8px; }
.asset-pipeline span, .platform-flow span { color: var(--muted); font-size: 14px; line-height: 1.4; }

.toolbar { margin-bottom: 12px; }
input[type=search] {
  width: min(560px, 100%);
  padding: 12px 14px;
  border: 1px solid var(--line);
  font: inherit;
}
.table-wrap {
  overflow: auto;
  background: var(--paper);
  border: 1px solid var(--line);
}
table { width: 100%; border-collapse: collapse; min-width: 1080px; }
th, td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}
th { background: #e8eef4; color: var(--ink); }
td { color: var(--muted); }

.asset-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.asset strong { display: block; margin-bottom: 8px; }
.asset { border-top: 4px solid var(--teal); }
.mini-table { display: grid; gap: 8px; }
.mini-row strong { display: block; margin-bottom: 4px; }
.mini-row span { color: var(--muted); font-size: 13px; }

@media (max-width: 1100px) {
  .hero, .split, .explainer-band, .snapshot { grid-template-columns: 1fr; }
  .metrics-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .flow, .stage-row, .asset-list, .source-grid, .asset-pipeline, .platform-flow, .doc-sequence, .trust-rungs, .hero-graphic, .aha-grid, .visual-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-graphic div::before, .hero-graphic div::after { display: none; }
  .aha-grid article::before, .aha-grid article::after { display: none; }
  .asset-pipeline article::after { display: none; }
}

@media (max-width: 720px) {
  .topbar { position: static; padding: 16px; align-items: flex-start; flex-direction: column; }
  main { padding: 22px 16px 48px; }
  section { margin-bottom: 52px; }
  .hero { padding: 26px; }
  .hero h2 { font-size: 30px; }
  .hero p { font-size: 17px; }
  blockquote { font-size: 20px; }
  .visual-guide, .one-minute, .aha-map { padding: 28px; }
  .illustration-panel { padding: 18px; }
  .metrics-strip, .flow, .stage-row, .card-grid, .asset-list, .source-grid, .rule-strip, .asset-pipeline, .platform-flow, .doc-sequence, .trust-rungs, .hero-graphic, .aha-grid, .visual-grid { grid-template-columns: 1fr; }
}