:root {
  color-scheme: dark;
  --bg: #07111f;
  --surface: rgba(10, 19, 34, 0.86);
  --surface-2: #0f1b2e;
  --surface-3: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f3f7ff;
  --muted: #8fa1c0;
  --accent: #7c9dff;
  --accent-2: #3dd9c3;
  --warning: #ffcb6b;
  --danger: #ff6f91;
  --success: #4fd3a3;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top left, rgba(124, 157, 255, 0.15), transparent 32%), linear-gradient(135deg, var(--bg), #0d1728 45%, #08111d);
  color: var(--text);
}

body.sidebar-open {
  overflow: hidden;
}

body.lightbox-open {
  overflow: hidden;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 24px 18px 24px;
  border-right: 1px solid var(--border);
  background: rgba(4, 10, 20, 0.78);
  backdrop-filter: blur(20px);
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 22px;
  padding: 6px 6px 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  font-size: 18px;
  box-shadow: 0 16px 32px rgba(124, 157, 255, 0.25);
}

.brand h1 {
  margin: 0;
  font-size: 1.02rem;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  margin-bottom: 16px;
  transition: border-color 180ms ease, background 180ms ease;
}

.search-box:focus-within {
  border-color: rgba(124, 157, 255, 0.4);
  background: rgba(124, 157, 255, 0.08);
}

.search-box input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
}

.page-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.page-link,
.category-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 12px;
  border-radius: 14px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.page-link:hover,
.category-summary:hover,
.page-link.active,
.category-summary.active {
  background: rgba(124, 157, 255, 0.14);
  border-color: rgba(124, 157, 255, 0.24);
  transform: translateY(-1px);
}

.category-group {
  border: 1px solid transparent;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.025);
  transition: border-color 180ms ease, background 180ms ease;
}

.category-group[open] {
  border-color: rgba(124, 157, 255, 0.16);
  background: rgba(255, 255, 255, 0.035);
}

.category-summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  background: transparent;
}

.summary-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.summary-title > span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.category-icon,
.category-bullet {
  width: 20px;
  height: 20px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-icon {
  object-fit: cover;
}

.category-icon-svg svg {
  width: 100%;
  height: 100%;
  display: block;
}

.category-icon-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-2);
  background: rgba(124, 157, 255, 0.16);
}

.category-bullet {
  background: rgba(255, 255, 255, 0.12);
}

.category-summary::marker,
.category-summary::-webkit-details-marker {
  display: none;
}

.subpage-list {
  display: grid;
  gap: 6px;
  padding: 8px 6px 10px 16px;
}

.page-link .page-meta {
  color: var(--muted);
  font-size: 0.8rem;
  opacity: 0.8;
}

.no-results {
  color: var(--muted);
  padding: 14px;
  font-size: 0.95rem;
}

.main-content {
  padding: 26px 28px 40px;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  align-items: center;
  justify-content: center;
  gap: 3px;
  flex-direction: column;
  cursor: pointer;
}

.sidebar-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
}

.eyebrow {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent-2);
  font-size: 0.78rem;
}

.topbar h2 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.topbar-badge {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.92rem;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.95rem;
  flex-wrap: wrap;
}

.breadcrumb-link {
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms ease;
}

.breadcrumb-link:hover {
  color: var(--text);
}

.breadcrumb-current {
  color: var(--text);
  font-weight: 600;
}

.breadcrumb-separator {
  color: rgba(255, 255, 255, 0.28);
}

.content-card {
  background: rgba(8, 16, 31, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 28px;
  padding: 38px clamp(20px, 3vw, 42px);
  box-shadow: var(--shadow);
  line-height: 1.8;
  overflow: hidden;
}

.content-card > :first-child {
  margin-top: 0;
}

.content-card h1,
.content-card h2,
.content-card h3,
.content-card h4 {
  line-height: 1.2;
  margin: 1.5em 0 0.7em;
  letter-spacing: -0.02em;
}

.content-card h1 {
  font-size: clamp(2rem, 3.2vw, 2.7rem);
}

.content-card h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.8rem);
}

.content-card h3 {
  font-size: 1.2rem;
}

.content-card p,
.content-card ul,
.content-card ol,
.content-card blockquote,
.content-card pre,
.content-card table,
.content-card .tabs,
.content-card .callout,
.content-card .table-wrapper {
  margin: 0.95em 0 1.15em;
}

.content-card ul,
.content-card ol {
  padding-left: 1.3rem;
}

.content-card li + li {
  margin-top: 0.45rem;
}

.content-card a {
  color: var(--accent-2);
  text-decoration: none;
  transition: color 180ms ease, opacity 180ms ease;
}

.content-card a:hover {
  color: #8affea;
}

.content-card code {
  padding: 0.16rem 0.42rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #dfe8ff;
  font-size: 0.95em;
}



.content-card pre code {
  display: block;
  padding: 16px 10px;
  overflow-x: auto;
  background: transparent !important;
  color: #dce7ff;
  font-size: 0.95rem;
  line-height: 1.6;
}

.content-card pre code.hljs {
  background: transparent !important;
  padding: 16px 10px;
}

.code-block {
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, #060b13 0%, #03060d 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.code-block-language {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.code-copy-btn {
  border: 0;
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--text);
  background: rgba(124, 157, 255, 0.16);
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease;
}

.code-copy-btn:hover {
  transform: translateY(-1px);
  background: rgba(124, 157, 255, 0.22);
}

.code-copy-btn.copied {
  background: rgba(77, 211, 163, 0.2);
}

.table-wrapper {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.content-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.02);
}

.content-table th,
.content-table td {
  padding: 13px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.content-table th {
  background: rgba(124, 157, 255, 0.1);
  font-weight: 600;
}

.content-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

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

.content-card ul.task-list,
.content-card ol.task-list {
  padding-left: 1.2rem;
}

.content-card li.task-list-item {
  list-style: none;
}

.content-card li.task-list-item input[type="checkbox"] {
  margin-right: 0.65rem;
  transform: translateY(0.12rem);
}

.callout {
  padding: 16px 18px;
  border-radius: 16px;
  margin: 1.1em 0 1.25em;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.callout p {
  margin: 0;
}

.callout-info {
  border-color: rgba(124, 157, 255, 0.24);
  background: rgba(124, 157, 255, 0.12);
}

.callout-warning {
  border-color: rgba(255, 203, 107, 0.24);
  background: rgba(255, 203, 107, 0.12);
}

.callout-danger {
  border-color: rgba(255, 111, 145, 0.24);
  background: rgba(255, 111, 145, 0.12);
}

.callout-success {
  border-color: rgba(79, 211, 163, 0.24);
  background: rgba(79, 211, 163, 0.12);
}

.callout-tip {
  border-color: rgba(61, 217, 195, 0.24);
  background: rgba(61, 217, 195, 0.12);
}

.tabs {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.tabs-nav {
  display: flex;
  gap: 6px;
  padding: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.tab-trigger {
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.tab-trigger:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.tab-trigger.active {
  background: rgba(124, 157, 255, 0.16);
  color: var(--text);
  transform: translateY(-1px);
}

.tab-panel {
  display: none;
  padding: 16px 16px 18px;
  animation: fadeIn 220ms ease;
}

.tab-panel.active {
  display: block;
}

.doc-pagination {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 22px;
}

.doc-nav-link {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.03);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.doc-nav-link:hover {
  transform: translateY(-1px);
  border-color: rgba(124, 157, 255, 0.24);
  background: rgba(124, 157, 255, 0.08);
}

.doc-nav-link.disabled {
  opacity: 0.56;
  pointer-events: none;
}

.doc-nav-link[data-direction="next"] {
  align-items: flex-end;
  text-align: right;
}

.doc-nav-label {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.doc-nav-title {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.content-image {
  display: block;
  max-width: 100%;
  border-radius: 18px;
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.24);
  cursor: zoom-in;
  margin: 1.1em 0 1.25em;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(2, 5, 12, 0.86);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 40;
}

.image-lightbox.active {
  display: flex;
}

.image-lightbox img {
  max-width: min(100%, 1000px);
  max-height: 90vh;
  object-fit: contain;
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

.image-lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
  cursor: pointer;
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.38);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  z-index: 20;
}

.sidebar-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .main-content {
    padding: 22px 18px 34px;
  }
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 30;
    width: min(88vw, 320px);
    transform: translateX(-100%);
    transition: transform 220ms ease;
    border-right: 1px solid var(--border);
    border-bottom: none;
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.3);
  }

  body.sidebar-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-toggle {
    display: inline-flex;
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .doc-pagination {
    flex-direction: column;
  }

  .content-card {
    padding: 22px 18px;
    border-radius: 22px;
  }
}