:root {
  --white: #FFFFFF;
  --grey-50: #FAFAFA;
  --grey-100: #F5F5F5;
  --grey-200: #EEEEEE;
  --grey-300: #E0E0E0;
  --grey-400: #BDBDBD;
  --grey-500: #9E9E9E;
  --grey-600: #757575;
  --grey-700: #616161;
  --grey-800: #424242;
  --grey-900: #212121;
  --teal: #9B8EC4;
  --teal-light: #C4B8E0;
  --teal-dark: #6B5B95;
  --terminal-bg: #1E1E1E;
  --accent: #9B8EC4;
  --accent-light: #C4B8E0;
  --accent-dark: #6B5B95;
  --border: 3px solid var(--grey-900);
  --shadow: 6px 6px 0px var(--grey-900);
  --shadow-sm: 4px 4px 0px var(--grey-900);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--grey-100);
  color: var(--grey-900);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  margin: 0 auto;
  max-width: 1400px;
  padding: 0 32px;
}

nav {
  background: var(--white);
  border-bottom: var(--border);
  left: 0;
  padding: 16px 0;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 1000;
}

nav .container {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.logo {
  align-items: center;
  color: var(--grey-900);
  display: flex;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 700;
  gap: 12px;
}

.logo-slash {
  color: var(--teal);
}

.nav-links {
  align-items: center;
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--grey-700);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--grey-900);
}

.btn {
  align-items: center;
  background: var(--white);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  color: var(--grey-900);
  cursor: pointer;
  display: inline-flex;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  gap: 8px;
  padding: 12px 24px;
  transition: all 0.15s ease;
}

.btn:hover {
  box-shadow: 2px 2px 0px var(--grey-900);
  transform: translate(2px, 2px);
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.hamburger span {
  background: var(--accent);
  display: block;
  height: 3px;
  transition: all 0.3s ease;
  width: 25px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

.mobile-menu {
  background: var(--white);
  border-bottom: var(--border);
  display: none;
  flex-direction: column;
  gap: 12px;
  left: 0;
  padding: 16px 24px;
  position: fixed;
  right: 0;
  top: 73px;
  z-index: 999;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  color: var(--grey-700);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 0;
}

.article-header {
  background: var(--white);
  border-bottom: var(--border);
  padding: 140px 0 52px;
}

.article-header-inner {
  margin: 0 auto;
  max-width: 1120px;
}

.back-link {
  align-items: center;
  color: var(--accent-dark);
  display: inline-flex;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  gap: 6px;
  margin-bottom: 32px;
  transition: gap 0.2s ease;
}

.back-link:hover {
  gap: 10px;
}

.article-meta {
  color: var(--grey-600);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.article-header h1 {
  font-size: 2.85rem;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.1;
  margin-bottom: 18px;
}

.article-header h1 span {
  color: var(--accent);
}

.subtitle {
  color: var(--grey-600);
  font-size: 1.18rem;
  line-height: 1.55;
}

.feature-image-wrap {
  background: var(--grey-100);
  padding: 36px 0 0;
}

.feature-image {
  border: var(--border);
  box-shadow: var(--shadow);
  margin: 0 auto;
  max-width: 780px;
  overflow: hidden;
}

.feature-image img {
  display: block;
  height: auto;
  width: 100%;
}

.article-body {
  padding: 132px 0 100px;
}

.article-prose {
  margin: 0;
  max-width: none;
}

.docs-shell {
  align-items: start;
  display: grid;
  gap: 42px;
  grid-template-columns: 240px minmax(0, 1fr);
}

.docs-sidebar {
  background: var(--white);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 18px;
  position: sticky;
  top: 104px;
}

.docs-sidebar a {
  color: var(--grey-700);
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.86rem;
  font-weight: 700;
  padding: 10px 12px;
  text-decoration: none;
}

.docs-sidebar a:hover,
.docs-sidebar a.active {
  background: var(--teal-light);
  color: var(--grey-900);
}

.docs-article {
  background: var(--white);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 44px 52px;
}

.docs-article-header {
  border-bottom: 2px solid var(--grey-200);
  margin-bottom: 34px;
  padding-bottom: 30px;
}

.docs-article-header .back-link {
  margin-bottom: 24px;
  text-decoration: none;
}

.docs-article-header h1 {
  font-size: 2.65rem;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.1;
  margin: 0 0 16px;
}

.docs-article-header h1 span {
  color: var(--accent);
}

.docs-article-header .subtitle {
  max-width: 960px;
}

.article-prose h2 {
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1.25;
  margin: 44px 0 16px;
}

.article-prose h3 {
  font-size: 1.08rem;
  font-weight: 800;
  margin: 0 0 8px;
}

.article-prose p {
  color: var(--grey-700);
  font-size: 1.03rem;
  line-height: 1.78;
  margin-bottom: 20px;
  max-width: 900px;
}

.article-prose a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-prose a.detail-card,
.article-prose a.guide-card {
  color: var(--grey-900);
  text-decoration: none;
}

.article-prose ul {
  list-style: none;
  margin: 0 0 22px;
}

.article-prose li {
  color: var(--grey-700);
  display: flex;
  font-size: 1rem;
  gap: 12px;
  line-height: 1.62;
  margin-bottom: 12px;
}

.article-prose li::before {
  color: var(--accent);
  content: "\2192";
  flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}

.detail-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 24px 0;
  max-width: 980px;
}

.detail-card {
  background: var(--white);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 22px;
  transition: all 0.15s ease;
}

a.detail-card:hover {
  box-shadow: 2px 2px 0px var(--grey-900);
  transform: translate(2px, 2px);
}

.detail-card p {
  font-size: 0.95rem;
  line-height: 1.62;
  margin-bottom: 0;
}

.article-table {
  border-collapse: collapse;
  margin: 24px 0;
  width: 100%;
}

.article-table th,
.article-table td {
  border: 2px solid var(--grey-900);
  font-size: 0.95rem;
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.article-table th {
  background: var(--accent-light);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  font-weight: 700;
}

.article-table td {
  background: var(--white);
  color: var(--grey-700);
}

.callout {
  background: var(--terminal-bg);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  color: var(--grey-300);
  margin: 28px 0;
  max-width: 980px;
  padding: 24px;
}

.callout p,
.callout li {
  color: var(--grey-300);
}

.callout p:last-child {
  margin-bottom: 0;
}

.code-box {
  background: var(--terminal-bg);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  color: #a0e8af;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.55;
  margin: 24px 0;
  max-width: 980px;
  overflow-x: auto;
  padding: 22px;
  white-space: pre;
}

.editorial-list {
  display: grid;
  gap: 14px;
  margin: 24px 0 30px;
  max-width: 980px;
}

.editorial-item {
  border-left: 4px solid var(--accent);
  padding: 4px 0 4px 18px;
}

.editorial-item h3 {
  font-size: 1.02rem;
  margin-bottom: 4px;
}

.editorial-item p {
  font-size: 0.98rem;
  line-height: 1.62;
  margin: 0;
}

.compact-reference {
  background: var(--grey-50);
  border: 2px solid var(--grey-900);
  margin: 24px 0;
  max-width: 980px;
  padding: 22px;
}

.compact-reference h3 {
  margin-bottom: 12px;
}

.docs-page {
  background: var(--grey-100);
  padding: 132px 0 100px;
}

.docs-panel {
  background: var(--white);
  border: var(--border);
  box-shadow: var(--shadow);
  margin: 0 auto;
  max-width: 1200px;
  padding: 42px;
}

.docs-back {
  color: var(--accent-dark);
  display: inline-flex;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 26px;
  text-decoration: none;
}

.docs-meta {
  color: var(--grey-600);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.86rem;
  margin-bottom: 12px;
}

.docs-panel h1 {
  color: var(--grey-900);
  font-size: 2.65rem;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.1;
  margin: 0 0 16px;
}

.docs-intro,
.docs-note {
  color: var(--grey-600);
  font-size: 1.03rem;
  line-height: 1.65;
  max-width: 760px;
}

.docs-note {
  margin-top: 10px;
}

.docs-list {
  border-top: 2px solid var(--grey-900);
  margin-top: 34px;
}

.docs-row {
  align-items: center;
  color: var(--grey-900);
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr auto;
  padding: 26px 0;
  text-decoration: none;
  transition: color 0.15s ease;
}

.docs-row + .docs-row {
  border-top: 2px solid var(--grey-200);
}

.docs-row:hover h2,
.docs-row:hover span {
  color: var(--accent-dark);
}

.docs-row h2 {
  color: var(--grey-900);
  font-size: 1.22rem;
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 8px;
}

.docs-row p {
  color: var(--grey-600);
  font-size: 0.96rem;
  line-height: 1.6;
  margin: 0;
  max-width: 690px;
}

.docs-row span {
  color: var(--grey-700);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.84rem;
  font-weight: 700;
  white-space: nowrap;
}

.section-divider {
  background: var(--accent);
  height: 4px;
  margin: 48px 0;
  width: 60px;
}

.article-cta {
  background: var(--grey-900);
  border: var(--border);
  box-shadow: var(--shadow);
  margin-top: 52px;
  padding: 40px;
  text-align: center;
}

.article-cta h2 {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 0 12px;
}

.article-cta p {
  color: var(--grey-400);
  margin-bottom: 24px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

footer {
  background: var(--white);
  border-top: var(--border);
  padding: 40px 0;
}

.footer-content {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
}

.footer-logo {
  color: var(--grey-900);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.2rem;
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: var(--grey-600);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--grey-900);
}

.footer-copy {
  color: var(--grey-600);
  font-size: 0.9rem;
}

@media (max-width: 760px) {
  .container {
    padding: 0 18px;
  }

  .hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
  }

  .article-header {
    padding-top: 124px;
  }

  .article-header h1 {
    font-size: 2.05rem;
  }

  .article-body {
    padding: 96px 0 72px;
  }

  .docs-article-header h1 {
    font-size: 1.75rem;
    line-height: 1.16;
  }

  .docs-article-header h1 span {
    display: block;
  }

  .subtitle {
    font-size: 1.03rem;
  }

  .docs-article-header .subtitle {
    font-size: 1rem;
    line-height: 1.55;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .docs-shell {
    gap: 0;
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    display: none;
  }

  .docs-article {
    padding: 28px 20px;
  }

  .callout,
  .code-box,
  .compact-reference {
    margin-left: 0;
    margin-right: 0;
    padding: 20px;
  }

  .code-box {
    font-size: 0.82rem;
  }

  .article-prose p {
    font-size: 1rem;
    line-height: 1.68;
  }

  .docs-page {
    padding: 108px 0 72px;
  }

  .docs-panel {
    padding: 28px 22px;
  }

  .docs-panel h1 {
    font-size: 2rem;
  }

  .docs-row {
    align-items: flex-start;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .article-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .article-table th,
  .article-table td {
    min-width: 180px;
  }

  .article-cta {
    padding: 28px 20px;
  }

  .footer-content {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
    text-align: left;
  }

  .footer-links {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }
}