.guide-page {
  background: var(--bg);
}

.guide-hero {
  overflow: hidden;
  padding: 92px 0 84px;
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.guide-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1.18fr);
  gap: 56px;
  align-items: center;
}

.guide-hero-copy {
  min-width: 0;
}

.guide-hero-copy h1 {
  max-width: 650px;
  margin-bottom: 20px;
  color: var(--text);
  font-size: clamp(42px, 5vw, 62px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: 0;
}

.guide-hero-lead {
  max-width: 660px;
  margin-bottom: 30px;
  color: #42464d;
  font-size: 18px;
  line-height: 1.65;
}

.guide-hero-image {
  margin: 0;
}

.guide-hero-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.09);
}

.guide-introduction {
  background: var(--bg-soft);
}

.guide-intro-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.65fr) minmax(0, 1.35fr);
  gap: 80px;
  align-items: start;
}

.guide-intro-grid .section-heading {
  position: sticky;
  top: 104px;
  margin-bottom: 0;
}

.guide-prose,
.guide-article {
  min-width: 0;
}

.guide-prose {
  max-width: 790px;
}

.guide-prose p,
.guide-article p,
.guide-article li,
.guide-article td,
.guide-article th {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.72;
}

.guide-prose strong,
.guide-article strong,
.guide-article h3 {
  color: var(--text);
}

.guide-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 800px);
  gap: 72px;
  justify-content: center;
  padding-top: 104px;
  padding-bottom: 112px;
}

.guide-toc {
  position: sticky;
  top: 100px;
  display: grid;
  align-self: start;
  gap: 4px;
  padding-right: 24px;
  border-right: 1px solid var(--line);
}

.guide-toc strong {
  margin-bottom: 12px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
}

.guide-toc a {
  padding: 7px 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.guide-toc a:hover {
  color: var(--accent);
}

.guide-chapter {
  padding: 0 0 104px;
  scroll-margin-top: 90px;
}

.guide-chapter + .guide-chapter {
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.guide-chapter-number {
  display: block;
  margin: 42px 0 12px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.guide-chapter:first-child .guide-chapter-number {
  margin-top: 0;
}

.guide-chapter h2 {
  margin-bottom: 24px;
  color: var(--text);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0;
}

.guide-chapter h3 {
  margin: 34px 0 12px;
  font-size: 21px;
  line-height: 1.25;
}

.guide-question {
  margin: 0 0 34px;
  padding: 20px 0 20px 22px;
  border-left: 3px solid var(--accent);
}

.guide-question span {
  display: block;
  margin-bottom: 7px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.guide-question p {
  margin: 0;
  color: var(--text);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
}

.guide-chart {
  margin: 36px 0 42px;
}

.guide-chart img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.guide-chart figcaption {
  margin-top: 10px;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.5;
}

.guide-article ul,
.guide-article ol {
  display: grid;
  gap: 9px;
  margin: 20px 0 28px;
  padding-left: 24px;
}

.guide-table-wrap {
  overflow-x: auto;
  margin: 28px 0 34px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.guide-table-wrap table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  text-align: left;
}

.guide-table-wrap th,
.guide-table-wrap td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.guide-table-wrap tr:last-child td {
  border-bottom: 0;
}

.guide-table-wrap th {
  color: var(--text);
  background: var(--surface-soft);
  font-size: 13px;
  font-weight: 700;
}

.guide-article code,
.guide-prose code {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.92em;
}

.guide-article p code,
.guide-article li code,
.guide-prose p code,
.guide-table-wrap code {
  padding: 2px 5px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.guide-article pre {
  overflow-x: auto;
  margin: 24px 0 30px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.guide-article pre code {
  white-space: pre;
  line-height: 1.65;
}

.guide-prose blockquote,
.guide-article blockquote {
  margin: 28px 0;
  padding: 4px 0 4px 24px;
  border-left: 3px solid var(--teal);
  color: var(--text);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.55;
}

.guide-callout {
  margin: 30px 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  background: var(--surface-tint);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.guide-checklist {
  padding-left: 0 !important;
  list-style: none;
}

.guide-checklist li {
  position: relative;
  padding: 14px 0 14px 30px;
  border-bottom: 1px solid var(--line);
}

.guide-checklist li::before {
  content: "✓";
  position: absolute;
  top: 14px;
  left: 0;
  color: var(--teal-deep);
  font-weight: 800;
}

.guide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

@media (max-width: 980px) {
  .guide-hero-grid,
  .guide-intro-grid {
    grid-template-columns: 1fr;
  }

  .guide-hero-copy {
    max-width: 720px;
  }

  .guide-intro-grid {
    gap: 24px;
  }

  .guide-intro-grid .section-heading {
    position: static;
  }

  .guide-layout {
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .guide-toc {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 0 0 24px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .guide-toc strong {
    grid-column: 1 / -1;
  }

  .guide-article {
    max-width: 800px;
  }
}

@media (max-width: 640px) {
  .guide-hero {
    padding: 68px 0 62px;
  }

  .guide-hero-copy h1 {
    font-size: clamp(36px, 12vw, 48px);
  }

  .guide-hero-lead {
    font-size: 16px;
  }

  .guide-hero .button,
  .guide-actions .button {
    width: 100%;
  }

  .guide-layout {
    padding-top: 76px;
    padding-bottom: 84px;
  }

  .guide-toc {
    grid-template-columns: 1fr;
  }

  .guide-chapter {
    padding-bottom: 76px;
  }

  .guide-chapter h2 {
    font-size: 32px;
  }

  .guide-question {
    padding-left: 16px;
  }

  .guide-question p {
    font-size: 16px;
  }

  .guide-article pre {
    margin-right: -8px;
    margin-left: -8px;
    padding: 16px;
  }
}