@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  color-scheme: light dark;
  --border: #e5e5e5;

  /* Site palette */
  --page-bg: #faf9f7;
  --sidebar-bg: #f5f3f0;
  --accent: #c9a227;
  --accent-soft: #f7f3e3;
  --text: #2d2a26;
  --text-muted: #6b6560;
  --step-num-bg: #e8e4dc;
}

@media (prefers-color-scheme: dark) {
  :root {
    --border: #333;
    --page-bg: #1a1918;
    --sidebar-bg: #141312;
    --accent: #d4af37;
    --accent-soft: #2a2620;
    --text: #f0ede8;
    --text-muted: #9a958e;
    --step-num-bg: #2a2826;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'DM Sans', ui-sans-serif, system-ui, -apple-system, sans-serif;
  letter-spacing: -0.01em;
  line-height: 1.6;
  padding: 24px;
}

a {
  color: inherit;
}

h1 {
  margin: 0;
  font-weight: 800;
}

p {
  margin: 12px 0 0;
}

ul {
  margin: 0.5rem 0 1rem 1.5rem;
  padding: 0;
}

li {
  margin-bottom: 0.25rem;
}

/* Centered layout (support) */
.centered {
  display: grid;
  place-items: center;
  text-align: center;
}

.centered h1 {
  font-size: clamp(3rem, 10vw, 6rem);
  line-height: 1;
}

.centered main {
  max-width: 640px;
}

.centered main h1 {
  font-size: clamp(2.5rem, 8vw, 4rem);
  margin-bottom: 16px;
}

/* Landing page */
.landing-page {
  background: var(--page-bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

.landing-container {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.landing-container--wide {
  max-width: 680px;
}

.landing-hero {
  text-align: center;
}

.landing-hero h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.landing-tagline {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin: 0.75rem 0 0;
  letter-spacing: -0.01em;
}

.landing-nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.landing-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: white;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

@media (prefers-color-scheme: dark) {
  .landing-card {
    background: var(--sidebar-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.15);
  }
}

.landing-card:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06);
  transform: translateY(-3px);
}

@media (prefers-color-scheme: dark) {
  .landing-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.2);
  }
}

.landing-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  font-size: 1.25rem;
  background: var(--accent-soft);
  border-radius: 10px;
  flex-shrink: 0;
}

.landing-card-content {
  flex: 1;
  min-width: 0;
}

.landing-card-content strong {
  display: block;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.landing-card-content span {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.landing-card-arrow {
  font-size: 1.25rem;
  color: var(--accent);
  opacity: 0.4;
  transition: opacity 0.2s ease, transform 0.2s ease;
  flex-shrink: 0;
}

.landing-card:hover .landing-card-arrow {
  opacity: 1;
  transform: translateX(4px);
}

.landing-footer {
  text-align: center;
}

.landing-footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
  opacity: 0.7;
}

/* Support page */
.support-content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (max-width: 600px) {
  .support-content {
    grid-template-columns: 1fr;
  }
}

.support-card {
  padding: 2rem;
  background: white;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
}

@media (prefers-color-scheme: dark) {
  .support-card {
    background: var(--sidebar-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.15);
  }
}

.support-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  font-size: 1.5rem;
  background: var(--accent-soft);
  border-radius: 12px;
  margin-bottom: 1rem;
}

.support-card h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.support-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0 0 1.25rem;
  line-height: 1.5;
}

.support-email-link {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: 10px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.support-email-link:hover {
  background: #b89222;
  transform: translateY(-2px);
}

.support-guides-link {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: 10px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.support-guides-link:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-2px);
}

/* Legal page */
.legal-content h3 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.legal-content h4 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.legal-content section > p {
  color: var(--text);
  line-height: 1.7;
}

.legal-content ul {
  margin: 0.75rem 0 1.25rem;
  padding-left: 1.5rem;
}

.legal-content li {
  margin-bottom: 0.4rem;
  color: var(--text);
  line-height: 1.6;
}

.legal-content a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.legal-content a:hover {
  opacity: 0.8;
}

/* Document layout (legal) */
.document {
  padding: 48px 24px;
}

.document main {
  max-width: 720px;
  margin: 0 auto;
}

.document h1 {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.document h2 {
  font-size: 1.5rem;
  margin: 3rem 0 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.document h3 {
  font-size: 1.1rem;
  margin: 2rem 0 0.75rem;
}

.document h4 {
  font-size: 1rem;
  margin: 1.25rem 0 0.5rem;
  opacity: 0.7;
  font-weight: 500;
}

.document p {
  margin: 0 0 1rem;
}

.meta {
  opacity: 0.6;
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.document nav {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.document nav a {
  margin-right: 1.5rem;
}

.contact {
  margin-top: 3rem;
  padding: 1.25rem;
  border-radius: 8px;
  background: rgba(128, 128, 128, 0.1);
}

.back {
  margin-top: 3rem;
  text-align: center;
}

.guide-list {
  list-style: none;
  margin: 1rem 0;
  padding: 0;
}

.guide-list li {
  margin: 0;
  border-bottom: 1px solid var(--border);
}

.guide-list li:first-child {
  border-top: 1px solid var(--border);
}

.guide-list a {
  display: block;
  padding: 1rem 0;
  text-decoration: none;
}

.guide-list a:hover {
  opacity: 0.7;
}

.guide-list strong {
  display: block;
  margin-bottom: 0.25rem;
}

.guide-list span {
  display: block;
  font-size: 0.9rem;
  opacity: 0.6;
}

/* Sidebar layout */
.sidebar-layout {
  padding: 0;
  background: var(--page-bg);
  color: var(--text);
}

.sidebar-container {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: 100vh;
}

/* Sticky sidebar */
.page-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 2.5rem 2rem;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
}

.sidebar-back {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: 1.5rem;
  transition: color 0.2s ease;
}

.sidebar-back:hover {
  color: var(--accent);
}

.sidebar-nav h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--accent);
  letter-spacing: -0.02em;
}

/* Feature list (top level) */
.toc-features {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-features > li {
  margin-bottom: 1.25rem;
}

.toc-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  transition: color 0.2s ease;
}

.toc-feature::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.4;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toc-feature:hover::before {
  opacity: 1;
  transform: scale(1.2);
}

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

/* Step list (nested under features) */
.toc-steps {
  list-style: none;
  margin: 0.5rem 0 0 0;
  padding-left: 1.25rem;
  border-left: 2px solid var(--border);
}

.toc-steps li {
  margin: 0;
}

.toc-steps a {
  display: block;
  padding: 0.35rem 0;
  text-decoration: none;
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.toc-steps a:hover {
  color: var(--text);
  padding-left: 0.25rem;
}

/* Main content area */
.main-content {
  padding: 3.5rem 4rem 4rem;
  max-width: 1200px;
}

.main-content h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 0.5rem;
}

.main-content .meta {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.main-content .breadcrumb {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.main-content .breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.main-content .breadcrumb a:hover {
  color: var(--accent);
}

.main-content .breadcrumb a:not(:last-child)::after {
  content: '›';
  margin-left: 0.5rem;
  color: var(--border);
}

/* Content section styling */
.main-content section {
  margin: 4rem 0;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

.main-content section:first-of-type {
  margin-top: 2rem;
  padding-top: 0;
  border-top: none;
}

.main-content h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: -0.03em;
}

.main-content section > p:first-of-type {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

/* Step styling - two column layout */
.guide-step {
  display: flex;
  gap: 2.5rem;
  margin: 2.5rem 0;
  align-items: flex-start;
  padding: 2rem;
  background: white;
  border-radius: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

@media (prefers-color-scheme: dark) {
  .guide-step {
    background: var(--sidebar-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.15);
  }
}

.guide-step:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

@media (prefers-color-scheme: dark) {
  .guide-step:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.2);
  }
}

.guide-step-text {
  flex: 0.5;
  min-width: 200px;
  max-width: 280px;
}

/* Step counter */
.main-content section {
  counter-reset: step-counter;
}

.guide-step {
  counter-increment: step-counter;
}

.guide-step-text h3 {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.guide-step-text h3::before {
  content: counter(step-counter);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: white;
  background: var(--accent);
  border-radius: 6px;
  flex-shrink: 0;
}

.guide-step-text p {
  margin: 0 0 0.75rem;
  color: var(--text);
  line-height: 1.7;
}

.guide-step-text ul {
  margin: 0.75rem 0 0 0;
  padding-left: 1.25rem;
}

.guide-step-text li {
  margin-bottom: 0.4rem;
  color: var(--text);
}

.guide-step-text strong {
  color: var(--text);
  font-weight: 600;
}

.guide-step-image {
  flex: 2;
  max-width: 75%;
}

.guide-step-image img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.guide-step:hover .guide-step-image img {
  transform: scale(1.02);
  box-shadow: 0 8px 32px rgba(0,0,0,0.1), 0 2px 8px rgba(0,0,0,0.06);
}

/* Wrap to vertical on narrower screens */
@media (max-width: 800px) {
  .guide-step {
    flex-direction: column;
    padding: 1.5rem;
  }

  .guide-step-image {
    max-width: 100%;
  }
}

/* Tips box */
.guide-tips {
  margin: 3rem 0;
  padding: 1.75rem 2rem;
  border-radius: 12px;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  position: relative;
}

.guide-tips::before {
  content: '💡';
  position: absolute;
  top: -12px;
  left: 20px;
  font-size: 1.25rem;
  background: var(--page-bg);
  padding: 0 0.5rem;
}

.guide-tips strong {
  display: block;
  margin-bottom: 0.75rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.guide-tips ul {
  margin: 0;
  padding-left: 1.25rem;
}

.guide-tips li {
  margin-bottom: 0.35rem;
  color: var(--text);
}

/* Contact box */
.main-content .contact {
  margin-top: 4rem;
  padding: 2rem;
  border-radius: 12px;
  background: var(--sidebar-bg);
  border: 1px solid var(--border);
  text-align: center;
}

.main-content .contact strong {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1rem;
  font-weight: 700;
}

.main-content .contact a {
  color: var(--accent);
  font-weight: 500;
}

/* Back link */
.main-content .back {
  margin-top: 2rem;
  text-align: center;
}

.main-content .back a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.main-content .back a:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* Guide index card grid */
.guide-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.guide-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  background: white;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

@media (prefers-color-scheme: dark) {
  .guide-card {
    background: var(--sidebar-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.15);
  }
}

.guide-card:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06);
  transform: translateY(-3px);
}

@media (prefers-color-scheme: dark) {
  .guide-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.2);
  }
}

.guide-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  font-size: 1.5rem;
  background: var(--accent-soft);
  border-radius: 12px;
  flex-shrink: 0;
}

.guide-card-content {
  flex: 1;
  min-width: 0;
}

.guide-card-content strong {
  display: block;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.guide-card-content span {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.guide-card-arrow {
  font-size: 1.25rem;
  color: var(--accent);
  opacity: 0.5;
  transition: opacity 0.2s ease, transform 0.2s ease;
  flex-shrink: 0;
}

.guide-card:hover .guide-card-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* Mobile nav toggle button */
.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1001;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 10px;
  background: var(--sidebar-bg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.08);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

@media (prefers-color-scheme: dark) {
  .mobile-nav-toggle {
    box-shadow: 0 2px 8px rgba(0,0,0,0.3), 0 1px 3px rgba(0,0,0,0.2);
  }
}

.mobile-nav-toggle:hover {
  background: var(--accent-soft);
  transform: scale(1.05);
}

.mobile-nav-toggle:active {
  transform: scale(0.95);
}

/* Hamburger icon lines */
.mobile-nav-toggle span {
  display: block;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav-toggle span:nth-child(1) {
  top: 14px;
}

.mobile-nav-toggle span:nth-child(2) {
  top: 21px;
}

.mobile-nav-toggle span:nth-child(3) {
  top: 28px;
}

/* Animate to X when open */
.mobile-nav-toggle.is-open span:nth-child(1) {
  top: 21px;
  transform: translateX(-50%) rotate(45deg);
}

.mobile-nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
  transform: translateX(-50%) scaleX(0);
}

.mobile-nav-toggle.is-open span:nth-child(3) {
  top: 21px;
  transform: translateX(-50%) rotate(-45deg);
}

/* Backdrop overlay */
.mobile-nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.mobile-nav-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* Responsive: collapse sidebar on mobile */
@media (max-width: 900px) {
  .sidebar-container {
    grid-template-columns: 1fr;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .mobile-nav-backdrop {
    display: block;
  }

  .page-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 280px;
    max-width: 85vw;
    height: 100vh;
    border-right: 1px solid var(--border);
    border-bottom: none;
    padding: 4.5rem 1.5rem 2rem;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
  }

  .page-sidebar.is-open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,0.15);
  }

  @media (prefers-color-scheme: dark) {
    .page-sidebar.is-open {
      box-shadow: 4px 0 24px rgba(0,0,0,0.4);
    }
  }

  .sidebar-back {
    margin-bottom: 1rem;
  }

  .sidebar-nav h2 {
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
  }

  .toc-feature {
    font-size: 0.85rem;
    padding: 0.4rem 0;
  }

  .toc-steps a {
    font-size: 0.8rem;
    padding: 0.3rem 0;
  }

  .main-content {
    padding: 2rem 1.5rem;
    padding-top: 4.5rem;
  }

  .main-content h1 {
    font-size: 2rem;
  }

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

  .guide-card {
    padding: 1.25rem;
  }
}