/* ── Guide page layout ── */

.guide-hero {
  background: #fff;
  padding: 70px 0 50px;
  border-bottom: 1px solid #e8e8ed;
}

.guide-breadcrumb {
  font-size: 0.78rem;
  color: #6e6e73;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.guide-breadcrumb a { color: #0071e3; text-decoration: none; }
.guide-breadcrumb a:hover { text-decoration: underline; }
.guide-breadcrumb i { font-size: 0.65rem; color: #c7c7cc; }

.guide-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #1d1d1f;
  margin-bottom: 0.75rem;
  line-height: 1.1;
}

.guide-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.guide-meta span {
  font-size: 0.78rem;
  color: #6e6e73;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.guide-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(0, 113, 227, 0.08);
  color: #0071e3;
  padding: 0.2rem 0.6rem;
  border-radius: 980px;
}

/* ── Main content area ── */
.guide-body {
  padding: 60px 0 80px;
  background: #fff;
}

/* Content typography */
.guide-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #1d1d1f;
  margin: 2.5rem 0 0.75rem;
  padding-top: 0.5rem;
}

.guide-content h2:first-child { margin-top: 0; }

.guide-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1d1d1f;
  margin: 1.75rem 0 0.5rem;
}

.guide-content p {
  font-size: 0.95rem;
  color: #4a4a4f;
  line-height: 1.75;
  margin-bottom: 1rem;
}

.guide-content a { color: #0071e3; }
.guide-content a:hover { text-decoration: underline; }

.guide-content ul, .guide-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.guide-content li {
  font-size: 0.95rem;
  color: #4a4a4f;
  line-height: 1.7;
  margin-bottom: 0.35rem;
}

/* Step blocks */
.steps { counter-reset: step; list-style: none; padding: 0; }

.steps li {
  counter-increment: step;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  color: #4a4a4f;
  font-size: 0.95rem;
  line-height: 1.7;
}

.steps li::before {
  content: counter(step);
  min-width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #0071e3;
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

/* Code blocks */
.guide-content code {
  background: #f5f5f7;
  border: 1px solid #e8e8ed;
  padding: 0.15em 0.45em;
  border-radius: 5px;
  font-family: 'Ubuntu Mono', 'SF Mono', monospace;
  font-size: 0.85em;
  color: #1d1d1f;
}

.guide-content pre {
  background: #1d1d1f;
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.25rem 0;
}

.guide-content pre code {
  background: transparent;
  border: none;
  color: #e8e8ed;
  font-size: 0.85rem;
  line-height: 1.7;
  padding: 0;
}

/* Callout boxes */
.callout {
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.88rem;
  line-height: 1.6;
}

.callout i { flex-shrink: 0; margin-top: 0.1rem; font-size: 1rem; }

.callout.info  { background: rgba(0, 113, 227, 0.07); color: #003d80; }
.callout.info i { color: #0071e3; }

.callout.warn  { background: rgba(255, 159, 10, 0.1); color: #7a4500; }
.callout.warn i { color: #ff9f0a; }

.callout.tip   { background: rgba(48, 209, 88, 0.08); color: #1a5c2e; }
.callout.tip i { color: #30d158; }

/* Divider */
.guide-content hr {
  border: none;
  border-top: 1px solid #e8e8ed;
  margin: 2.5rem 0;
}

/* Comparison table */
.guide-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 1.25rem 0;
}

.guide-content th {
  background: #f5f5f7;
  font-weight: 600;
  color: #1d1d1f;
  padding: 0.65rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid #e8e8ed;
}

.guide-content td {
  padding: 0.6rem 0.9rem;
  color: #4a4a4f;
  border-bottom: 1px solid #f0f0f0;
}

.guide-content tr:last-child td { border-bottom: none; }

/* ── TOC sidebar ── */
.guide-toc {
  position: sticky;
  top: 80px;
  padding-left: 2rem;
}

.guide-toc-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6e6e73;
  margin-bottom: 0.75rem;
}

.guide-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 1.5px solid #e8e8ed;
}

.guide-toc ul li a {
  display: block;
  font-size: 0.82rem;
  color: #6e6e73;
  text-decoration: none;
  padding: 0.3rem 0 0.3rem 1rem;
  transition: color 0.15s, border-color 0.15s;
  border-left: 2px solid transparent;
  margin-left: -1.5px;
}

.guide-toc ul li a:hover { color: #0071e3; border-left-color: #0071e3; }

/* ── Guide nav (prev/next) ── */
.guide-nav {
  border-top: 1px solid #e8e8ed;
  padding: 2rem 0;
  margin-top: 3rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.guide-nav-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #1d1d1f;
  padding: 0.9rem 1.25rem;
  border: 1px solid #e8e8ed;
  border-radius: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
  max-width: 260px;
  flex: 1;
}

.guide-nav-btn:hover {
  border-color: #0071e3;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  color: #1d1d1f;
}

.guide-nav-btn i { color: #0071e3; font-size: 1.1rem; flex-shrink: 0; }

.guide-nav-btn .nav-btn-label {
  font-size: 0.7rem;
  color: #6e6e73;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.1rem;
}

.guide-nav-btn strong {
  font-size: 0.85rem;
  font-weight: 600;
  display: block;
}

.guide-nav-btn.next { text-align: right; margin-left: auto; }
.guide-nav-btn.next i { order: 2; }
.guide-nav-btn.next div { order: 1; }

/* ── Dark mode ── */
html.dark .guide-hero { background: #000; border-bottom-color: rgba(255,255,255,0.08); }
html.dark .guide-hero h1 { color: #f5f5f7; }
html.dark .guide-breadcrumb { color: #a1a1a6; }
html.dark .guide-meta span { color: #a1a1a6; }

html.dark .guide-body { background: #000; }
html.dark .guide-content h2 { color: #f5f5f7; }
html.dark .guide-content h3 { color: #f5f5f7; }
html.dark .guide-content p  { color: #a1a1a6; }
html.dark .guide-content li { color: #a1a1a6; }
html.dark .guide-content code { background: #2c2c2e; border-color: rgba(255,255,255,0.08); color: #f5f5f7; }
html.dark .guide-content th { background: #1c1c1e; color: #f5f5f7; border-bottom-color: rgba(255,255,255,0.08); }
html.dark .guide-content td { color: #a1a1a6; border-bottom-color: rgba(255,255,255,0.06); }
html.dark .guide-content hr { border-color: rgba(255,255,255,0.08); }

html.dark .callout.info { background: rgba(0,113,227,0.12); color: #8ec4ff; }
html.dark .callout.warn { background: rgba(255,159,10,0.12); color: #ffc96b; }
html.dark .callout.tip  { background: rgba(48,209,88,0.1);  color: #7ee8a2; }

html.dark .guide-toc ul { border-left-color: rgba(255,255,255,0.1); }
html.dark .guide-toc ul li a { color: #a1a1a6; }

html.dark .guide-nav { border-top-color: rgba(255,255,255,0.08); }
html.dark .guide-nav-btn { border-color: rgba(255,255,255,0.1); color: #f5f5f7; }
html.dark .guide-nav-btn:hover { border-color: #2997ff; color: #f5f5f7; }
html.dark .guide-nav-btn .nav-btn-label { color: #a1a1a6; }
html.dark .guide-nav-btn strong { color: #f5f5f7; }