:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --paper: #ffffff;
  --ink: #18202a;
  --muted: #53606f;
  --line: #d8dee8;
  --teal: #0f766e;
  --teal-dark: #115e59;
  --plum: #7c3aed;
  --rust: #9a3412;
  --code-bg: #111827;
  --code-ink: #f9fafb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--teal-dark);
  font-weight: 650;
}

.guide-frame {
  max-width: 1012px;
  margin: 32px auto;
  padding: 0 16px;
}

.page-shell {
  width: min(1080px, calc(100% - 18px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

.guide-hero {
  padding: 42px 0 30px;
  border-bottom: 1px solid var(--line);
}

.guide-hero h1 {
  max-width: 860px;
  margin: 0 0 16px;
  font-size: clamp(2.3rem, 6vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.guide-hero hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 24px 0 18px;
}

.guide-hero p {
  max-width: 760px;
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 1.12rem;
}

.metadata {
  margin: 0 0 18px;
  padding-left: 1.35rem;
  color: var(--ink);
}

.metadata li + li {
  margin-top: 0.2rem;
}

.page-views {
  margin-bottom: 18px;
}

.page-views img {
  display: inline-block;
  max-width: 100%;
}

h2 {
  margin-top: 42px;
  padding-top: 8px;
  font-size: 1.55rem;
  line-height: 1.2;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

p {
  margin-top: 0;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0 36px;
}

.summary-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 20px;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.step-actions {
  margin-top: 14px;
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px 14px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
}

.button-primary {
  border-color: var(--teal);
  background: var(--teal);
  color: #ffffff;
}

.use-steps {
  max-width: 920px;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 28px;
}

.resource-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 16px;
}

.resource-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

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

ol,
ul {
  padding-left: 1.35rem;
}

li + li {
  margin-top: 0.38rem;
}

code {
  border-radius: 4px;
  background: #edf2f7;
  padding: 0.12rem 0.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

pre {
  overflow-x: auto;
  border-radius: 8px;
  background: var(--code-bg);
  padding: 16px;
}

pre code {
  background: transparent;
  color: var(--code-ink);
  padding: 0;
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 18px, 1080px);
    padding-top: 18px;
  }

  .guide-hero {
    padding-top: 24px;
  }

  .summary-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }
}