:root {
  color-scheme: light;
  --ink: #102033;
  --muted: #425466;
  --soft: #64748b;
  --line: #d9e2ec;
  --panel: #ffffff;
  --wash: #f4f6f8;
  --blue: #1f4b99;
  --green: #0f766e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--wash);
  color: var(--ink);
}

a { color: inherit; text-decoration: none; }

.shell {
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.92), rgba(244,246,248,0.98)),
    radial-gradient(circle at 78% 8%, rgba(31,75,153,0.12), transparent 30rem);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217,226,236,0.86);
  background: rgba(244,246,248,0.9);
  backdrop-filter: blur(18px);
}

.nav-inner,
.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.nav-links a:hover { color: var(--ink); }

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(31,75,153,0.22);
  border-radius: 18px;
  background: var(--ink);
  color: #fff;
  min-height: 42px;
  padding: 0 18px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  padding: 88px 0 54px;
  border-bottom: 1px solid var(--line);
}

.kicker,
.meta {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 800;
}

h1 {
  max-width: 920px;
  margin: 18px 0 20px;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.55;
}

.strategy {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  padding: 46px 0;
  border-bottom: 1px solid var(--line);
}

.strategy h2,
.index h2 {
  margin: 0 0 16px;
  font-size: 30px;
  letter-spacing: -0.03em;
}

.strategy p,
.strategy li {
  color: var(--muted);
  line-height: 1.7;
}

.strategy ul { margin: 0; padding-left: 18px; }

.index {
  padding: 46px 0 90px;
}

.posts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.post {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  justify-content: space-between;
  background: var(--panel);
  padding: 28px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.post:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 60px rgba(15,23,42,0.08);
}

.post h3 {
  margin: 18px 0 14px;
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.post p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.read {
  margin-top: 28px;
  color: var(--green);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.article {
  width: min(820px, calc(100% - 32px));
  margin: 0 auto;
  padding: 86px 0 100px;
}

.article h1 {
  font-size: clamp(38px, 6vw, 68px);
  max-width: 820px;
}

.article-body {
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 36px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.article-body h2 {
  color: var(--ink);
  margin: 46px 0 12px;
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.article-body a {
  border-bottom: 1px solid rgba(31,75,153,0.25);
  color: var(--blue);
}

.article-body strong { color: var(--ink); }

.figure {
  margin: 34px 0;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  padding: 22px;
  box-shadow: 0 18px 52px rgba(15,23,42,0.06);
}

.figure-title {
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.bar-chart {
  display: grid;
  gap: 13px;
}

.bar-row {
  display: grid;
  grid-template-columns: 168px 1fr 86px;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: 13px;
}

.bar-track {
  height: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7edf5;
}

.bar-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--green));
}

.bar-fill.muted { background: #94a3b8; }

.bar-value {
  color: var(--ink);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  text-align: right;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--line);
}

.flow-step {
  min-height: 132px;
  background: #f8fbff;
  padding: 18px;
}

.flow-step b {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 14px;
}

.flow-step span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.matrix {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--line);
}

.matrix div {
  min-height: 118px;
  background: #fff;
  padding: 18px;
}

.matrix b {
  display: block;
  color: var(--ink);
  font-size: 14px;
}

.matrix span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.callout {
  margin: 34px 0;
  border-left: 3px solid var(--green);
  background: #eefbf7;
  padding: 18px 22px;
  color: #164e45;
}

.article-list {
  padding-left: 22px;
}

.article-list li {
  margin: 10px 0;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 32px 0;
  color: var(--soft);
  font-size: 13px;
}

@media (max-width: 820px) {
  .nav-inner { align-items: flex-start; flex-direction: column; padding: 16px 0; }
  .nav-links { flex-wrap: wrap; gap: 14px; }
  .hero { padding-top: 56px; }
  .strategy,
  .posts { grid-template-columns: 1fr; }
  .bar-row { grid-template-columns: 1fr; gap: 6px; }
  .bar-value { text-align: left; }
  .flow,
  .matrix { grid-template-columns: 1fr; }
}