:root {
  --brand: #337a4c;
  --brand-dark: #245c37;
  --alert: #b84b47;
  --bg: #f4f4f4;
  --surface: #ffffff;
  --surface-muted: #f9f9f9;
  --text-main: #1a1a1a;
  --text-dim: #555555;
  --border: #d1d1d1;
  --code-bg: #181b19;
  --code-text: #a3d9a7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text-main);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

p {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.7;
  margin: 0;
}

strong {
  color: var(--text-main);
}

.wrapper {
  max-width: 1400px;
  min-height: 100vh;
  margin: 0 auto;
  background-color: var(--surface);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.logo {
  color: var(--brand);
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--brand);
}

.hero {
  padding: clamp(4.5rem, 10vw, 8rem) clamp(1.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--border);
}

.label {
  display: block;
  margin-bottom: 1.5rem;
  color: var(--brand);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.label-alert {
  color: var(--alert);
}

h1,
h2 {
  margin: 0;
  color: var(--text-main);
  letter-spacing: 0;
}

h1 {
  max-width: 1000px;
  margin-bottom: 2rem;
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  line-height: 1.06;
}

h2 {
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  line-height: 1.15;
}

.description {
  max-width: 850px;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.45;
}

.description-small {
  font-size: 1.08rem;
}

.threat-alert {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 4rem);
  padding: clamp(3rem, 6vw, 4rem);
  background-color: var(--surface-muted);
  border-bottom: 1px solid var(--border);
}

.threat-alert h2 {
  margin-bottom: 1.25rem;
  color: var(--brand);
}

.threat-copy {
  align-self: end;
}

.maturity-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--border);
}

.stage-card {
  min-height: 330px;
  padding: clamp(2rem, 5vw, 4rem) 2rem;
  border-right: 1px solid var(--border);
}

.stage-card:last-child {
  border-right: 0;
}

.stage-num {
  margin-bottom: 2rem;
  color: var(--brand);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.8rem;
  font-weight: 800;
}

.stage-card h2 {
  margin-bottom: 1.25rem;
}

.platform {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  padding: clamp(3.5rem, 7vw, 6rem) clamp(1.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--border);
}

.platform h2 {
  margin-bottom: 1.25rem;
}

.code-box {
  width: 100%;
  margin: 0;
  overflow-x: auto;
  border-radius: 4px;
  background: var(--code-bg);
  color: var(--code-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
  line-height: 1.65;
  padding: 1.5rem;
}

.code-box code {
  font: inherit;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 3rem 2rem;
  color: #888888;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .threat-alert,
  .platform {
    grid-template-columns: 1fr;
  }

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

  .stage-card {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .stage-card:last-child {
    border-bottom: 0;
  }

  .threat-copy {
    align-self: start;
  }
}

@media (max-width: 760px) {
  .wrapper {
    border-left: 0;
    border-right: 0;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
    padding: 1.25rem;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 0.85rem 1rem;
  }

  .hero,
  .threat-alert,
  .platform {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .stage-card {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .site-footer {
    flex-direction: column;
    padding: 2rem 1.25rem;
  }
}