:root {
  --ink: #111827;
  --muted: #5f6775;
  --line: #d8dee8;
  --soft: #f5f7fa;
  --panel: #ffffff;
  --accent: #0f766e;
  --warn: #92400e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #eef2f7;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

.page {
  width: min(980px, calc(100% - 40px));
  margin: 28px auto;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 18px 60px rgba(17, 24, 39, 0.10);
}

.cover {
  padding: 44px 48px 36px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.sheet {
  padding: 34px 48px 44px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.10em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.15;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: 42px;
  font-weight: 850;
}

h2 {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 22px;
}

h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

p {
  margin: 12px 0 0;
  color: var(--muted);
}

code {
  padding: 2px 5px;
  border-radius: 4px;
  background: #eef6f4;
  color: #0f5e59;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.92em;
}

ul {
  margin: 12px 0 0;
  padding-left: 20px;
}

li {
  margin: 7px 0;
}

.subtitle {
  max-width: 790px;
  margin-top: 16px;
  color: #374151;
  font-size: 18px;
}

.meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.meta div,
.card,
.callout {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.meta div {
  padding: 14px;
  color: #273142;
  font-weight: 700;
}

.label {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.card {
  padding: 16px;
}

.card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
}

.callout {
  margin-top: 18px;
  padding: 16px;
  border-left: 4px solid var(--accent);
}

.callout.warning {
  border-left-color: var(--warn);
}

.surface-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.surface {
  min-height: 70px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  font-weight: 750;
}

.surface span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.footer {
  margin-top: 36px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

@media print {
  body {
    background: #ffffff;
  }

  .page {
    width: auto;
    margin: 0;
    border: 0;
    box-shadow: none;
  }
}

@media (max-width: 760px) {
  .page {
    width: calc(100% - 20px);
    margin: 10px auto;
  }

  .cover,
  .sheet {
    padding: 28px 22px;
  }

  h1 {
    font-size: 32px;
  }

  .meta,
  .grid-2,
  .surface-row {
    grid-template-columns: 1fr;
  }
}