@import url("https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@400;600&display=swap");

:root {
  --bg: #f4f6fb;
  --bg-strong: #6f9dff;
  --surface: #ffffff;
  --surface-muted: #f1f5ff;
  --panel-bg: #f9fafc;
  --sidebar-width: 260px;
  --toc-width: 220px;
  --text: #1f2a37;
  --muted: #6b7280;
  --primary: #5a7bff;
  --primary-700: #3f5dff;
  --accent: #1aa7a1;
  --danger: #e25555;
  --border: #e3e8f4;
  --shadow: 0 18px 40px rgba(24, 45, 95, 0.18);
  --shadow-soft: 0 12px 30px rgba(24, 45, 95, 0.12);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --font-display: "Outfit", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Outfit", "Microsoft YaHei", sans-serif;
  --font-markdown: "Noto Serif SC", "Noto Sans SC", "Microsoft YaHei", serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

body.layout-share {
  scroll-behavior: smooth;
}

body.layout-auth {
  background: linear-gradient(135deg, #6f9dff 0%, #83b0ff 48%, #cfe0ff 100%);
}

body.layout-app,
body.layout-public {
  background-image: radial-gradient(circle at 10% 20%, rgba(90, 123, 255, 0.08), transparent 45%),
    radial-gradient(circle at 80% 0%, rgba(26, 167, 161, 0.08), transparent 40%);
}

body.layout-share {
  background: var(--bg);
  background-image: none;
  overflow-x: hidden;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  font-family: var(--font-body);
}

.button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 600;
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.button.primary {
  background: linear-gradient(135deg, var(--primary), #7d95ff);
  color: #fff;
  border: none;
}

.button.ghost {
  border-color: transparent;
  color: var(--muted);
  background: #f2f4ff;
}

.button.danger {
  border-color: var(--danger);
  color: var(--danger);
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(27, 43, 74, 0.16);
}

.w-full {
  width: 100%;
}

.input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}

.input.small {
  width: 90px;
  padding: 6px 8px;
  border-radius: 8px;
}

label {
  font-weight: 600;
  font-size: 0.9rem;
}

.muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.flash,
.alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  margin-bottom: 12px;
}

.flash {
  background: #eef7f2;
  border: 1px solid #c9e6d7;
}

.alert.error {
  background: #fff1f1;
  border: 1px solid #f3c6c6;
  color: #bf2f2f;
}

.alert.info {
  background: #eef3ff;
  border: 1px solid #c9d6ff;
  color: #3756b7;
}

.notice {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: #fff5e9;
  border: 1px dashed #f0b45b;
  font-size: 0.92rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 22px;
}

.card.danger-zone {
  border-color: #f0c4c4;
  background: #fff7f7;
}

.card + .card {
  margin-top: 18px;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  border-bottom: 1px solid var(--border);
  padding: 10px 6px;
  text-align: left;
  vertical-align: top;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e7eefc;
  color: #3559e0;
  font-size: 0.82rem;
  font-weight: 600;
}

.inline-form {
  display: inline;
}

.announcement-edit {
  display: inline-block;
  margin-left: 6px;
}

.announcement-edit summary {
  list-style: none;
}

.announcement-edit summary::-webkit-details-marker {
  display: none;
}

.announcement-edit-form {
  margin-top: 8px;
  padding: 10px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  background: #f7f9ff;
}

.filter-form {
  margin-bottom: 14px;
}

.table-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--muted);
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}

.pagination-info {
  color: var(--muted);
  font-size: 0.92rem;
}

.pagination-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.modal[hidden] {
  display: none;
}

.modal-form {
  display: grid;
  gap: 12px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 12px;
}

.toast-stack {
  position: fixed;
  bottom: 20px;
  top: auto;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1200;
}

.toast {
  padding: 12px 16px;
  border-radius: 12px;
  background: #eef3ff;
  border: 1px solid #c9d6ff;
  color: #3144b5;
  box-shadow: var(--shadow-soft);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-hidden {
  opacity: 0;
  transform: translateY(-6px);
}

.scan-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.scan-progress {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.scan-progress__bar {
  height: 8px;
  background: #eef2ff;
  border-radius: 999px;
  overflow: hidden;
}

.scan-progress__bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--primary);
  transition: width 200ms ease;
}

.scan-progress__status {
  color: var(--muted);
  font-size: 0.9rem;
}

.scan-log {
  max-height: 220px;
  overflow: auto;
  background: #f8faff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.86rem;
  color: var(--muted);
}

.scan-log > div {
  padding: 4px 0;
  border-bottom: 1px dashed #e2e7f7;
}

.scan-log > div:last-child {
  border-bottom: none;
}

.scan-progress__actions {
  display: flex;
  justify-content: flex-end;
}

.scan-snippet {
  max-width: 360px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
  white-space: normal;
}

/* Public */
.public-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 36px 20px 80px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 32px;
  padding: 36px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #f6f8ff 0%, #eef4ff 45%, #f4fbff 100%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  align-items: center;
  position: relative;
  overflow: hidden;
}

.home-hero__main h1 {
  font-family: var(--font-display);
  font-size: 36px;
  margin: 8px 0 10px;
}

.home-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(90, 123, 255, 0.12);
  color: var(--primary-700);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
}

.home-lead {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.05rem;
}

.home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.home-tip {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.home-hero__meta {
  margin-top: 16px;
  color: #55608c;
  font-size: 0.92rem;
}

.home-hero__visual {
  display: grid;
  gap: 16px;
}

.hero-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 16px;
  padding: 18px 20px;
  border: 1px solid rgba(210, 221, 245, 0.9);
  box-shadow: 0 10px 24px rgba(46, 70, 120, 0.12);
}

.hero-card__title {
  font-weight: 700;
  color: #2c3766;
  margin-bottom: 12px;
}

.hero-card__lines span {
  display: block;
  height: 10px;
  border-radius: 6px;
  background: linear-gradient(90deg, #d7e1ff, #eef2ff);
  margin-bottom: 8px;
}

.hero-card__lines span:nth-child(2) {
  width: 88%;
}

.hero-card__lines span:nth-child(3) {
  width: 72%;
}

.hero-card__lines span:nth-child(4) {
  width: 64%;
}

.hero-card__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  font-size: 0.82rem;
  color: #4159e3;
}

.hero-card__chips span {
  padding: 4px 10px;
  border-radius: 999px;
  background: #eef2ff;
  border: 1px solid #d7e2ff;
}

.hero-flow {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
  display: grid;
  gap: 6px;
}

.home-metrics {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.home-metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
  display: grid;
  gap: 6px;
  box-shadow: var(--shadow-soft);
}

.home-metric strong {
  font-size: 1rem;
}

.home-metric span {
  color: var(--muted);
  font-size: 0.9rem;
}

.home-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 24px;
}

.home-section h2 {
  margin-top: 0;
  font-family: var(--font-display);
}

.home-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.home-card {
  background: #f7f9ff;
  border-radius: 14px;
  padding: 18px;
  border: 1px solid #e4e9f9;
}

.home-card h3 {
  margin-top: 0;
}

.home-steps {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.home-step {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #f7f9ff;
  border-radius: 12px;
  border: 1px solid #e4e9f9;
  padding: 12px 14px;
  font-weight: 600;
}

.home-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 0.86rem;
}

.home-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding-top: 8px;
}

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

  .home-hero__visual {
    order: -1;
  }
}

/* Auth */
.auth-shell {
  min-height: 100vh;
  padding: 48px 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  width: 92vw;
  max-width: 420px;
  background: var(--surface);
  border-radius: 20px;
  padding: 32px 30px;
  box-shadow: var(--shadow);
  text-align: center;
}

.auth-logo {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #2f7cff, #4fd0ff);
  -webkit-background-clip: text;
  color: transparent;
  margin-bottom: 8px;
}

.auth-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin: 10px 0 6px;
}

.auth-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
}

.auth-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.auth-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
}

.auth-step span {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #dbe3ff;
  color: #4054c7;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.auth-step.is-active {
  background: #eef3ff;
  border-color: #c9d6ff;
  color: #2b3a6f;
}

.auth-step.is-active span {
  background: var(--primary);
  color: #fff;
}

@media (max-width: 460px) {
  .auth-steps {
    grid-template-columns: 1fr;
  }
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 10px 0 6px;
  color: var(--muted);
  font-size: 0.85rem;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.auth-tabs {
  display: flex;
  gap: 6px;
  background: var(--surface-muted);
  border-radius: 999px;
  padding: 4px;
  margin: 12px 0 8px;
}

.auth-tab {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.9rem;
  cursor: pointer;
}

.auth-tab.is-active {
  background: #fff;
  color: var(--primary-700);
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(82, 104, 214, 0.18);
}

.auth-field {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-muted);
  border-radius: 12px;
  padding: 8px 12px;
  border: 1px solid transparent;
}

.auth-field > * + * {
  margin-left: 10px;
}

.auth-field:focus-within {
  border-color: rgba(90, 123, 255, 0.45);
  box-shadow: 0 0 0 3px rgba(90, 123, 255, 0.15);
}

.auth-icon {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: #fff;
  border-radius: 10px;
  color: #5268d6;
  box-shadow: 0 4px 10px rgba(82, 104, 214, 0.18);
}

.auth-icon svg {
  width: 18px;
  height: 18px;
}

.auth-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 8px 4px;
  font-size: 0.95rem;
  outline: none;
  min-width: 0;
}

.auth-field-captcha {
  gap: 8px;
  flex-wrap: nowrap;
}

.captcha-img {
  width: 144px;
  height: 48px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  background: #fff;
  flex-shrink: 0;
  object-fit: cover;
}

.auth-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.auth-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

/* App layout */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: 248px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 18px;
  box-shadow: 0 20px 40px rgba(24, 45, 95, 0.08);
  position: sticky;
  top: 0;
  height: 100vh;
}

.app-logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-700);
  margin-bottom: 24px;
}

.app-nav {
  display: grid;
  gap: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 600;
  transition: background 140ms ease, color 140ms ease;
}

.nav-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(90, 123, 255, 0.3);
}

.nav-item.is-active {
  background: rgba(90, 123, 255, 0.12);
  color: var(--primary-700);
}

.nav-item.is-active .nav-dot {
  background: var(--primary-700);
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.app-side-trigger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--primary-700);
  cursor: pointer;
}

.app-side-trigger svg {
  width: 20px;
  height: 20px;
}

.app-side-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 8;
}

body.app-side-open .app-side-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.app-side-open {
  overflow: hidden;
}

.topbar-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: #2b3a6f;
}

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

.user-pill {
  padding: 6px 12px;
  border-radius: 999px;
  background: #f1f5ff;
  color: #3c4ad7;
  font-weight: 600;
}

.app-content {
  padding: 28px;
  flex: 1;
}

.app-content .card[id] {
  scroll-margin-top: 90px;
}

.app-footer {
  padding: 16px 28px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px dashed var(--border);
}

.app-footer a {
  color: var(--primary-700);
  text-decoration: none;
  font-weight: 600;
}

.app-footer a:hover {
  text-decoration: underline;
}

.share-footer {
  margin-top: 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  background: linear-gradient(
    90deg,
    var(--panel-bg) 0,
    var(--panel-bg) var(--sidebar-width),
    var(--surface) var(--sidebar-width)
  );
  padding: 16px 0 24px;
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.share-footer a {
  color: var(--primary-700);
  text-decoration: none;
  font-weight: 600;
}

.share-footer a:hover {
  text-decoration: underline;
}

/* Share */
.share-page {
  min-height: 100vh;
  padding: 0 32px;
  background: transparent;
  display: flex;
  flex-direction: column;
}

.share-shell {
  display: flex;
  align-items: flex-start;
  min-height: 0;
  flex: 1;
  background: var(--surface);
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
  width: 100%;
}

.share-content,
.kb-main,
.share-article {
  min-width: 0;
  max-width: 100%;
}

.share-shell--single {
  max-width: 1400px;
  margin: 0 auto;
  justify-content: center;
}

.share-shell--single .share-content {
  flex: 0 1 auto;
  width: min(520px, 100%);
  margin: 0 auto;
  padding-left: 0;
  padding-right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
}

.share-shell--single .share-header {
  width: 100%;
  max-width: none;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.share-shell--single .share-header h1 {
  text-align: center;
  margin-left: 0;
  margin-right: 0;
}

.share-shell--single .share-gate {
  width: 100%;
  max-width: none;
  margin: 0 auto;
}

.share-shell--single .share-gate-form .input,
.share-shell--single .share-gate-form .button {
  width: 100%;
}

.share-shell--notebook {
  /* max-width: 1200px; */
  margin: 0 auto;
}

.share-shell--doc {
  background: linear-gradient(
    90deg,
    var(--panel-bg) 0,
    var(--panel-bg) var(--toc-width),
    var(--surface) var(--toc-width)
  );
}

.share-shell--notebook {
  background: linear-gradient(
    90deg,
    var(--panel-bg) 0,
    var(--panel-bg) var(--sidebar-width),
    var(--surface) var(--sidebar-width)
  );
}

.share-shell--doc .share-toc {
  border-top-left-radius: 22px;
  border-bottom-left-radius: 22px;
}

.share-shell--notebook .kb-sidebar {
  border-top-left-radius: 22px;
  border-bottom-left-radius: 22px;
}

.share-nav {
  width: 280px;
  border-right: 1px solid var(--border);
  background: #f7f9ff;
  padding: 24px 16px;
}

.share-nav-title {
  font-weight: 700;
  color: #2c3766;
}

.share-nav-list {
  margin-top: 14px;
  display: grid;
  gap: 8px;
}

.share-nav-item {
  display: block;
  padding: 10px 12px;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
}

.share-nav-item.is-active {
  background: #eef2ff;
  border-color: #d9e2ff;
}

.share-content {
  flex: 1;
  padding: 32px 40px;
  min-width: 0;
  background: var(--surface);
}

.share-gate {
  max-width: 360px;
  margin: 18px auto 0;
  text-align: center;
  display: grid;
  gap: 12px;
}

.share-gate-note {
  color: var(--muted);
  font-size: 0.95rem;
}

.share-gate-form {
  display: grid;
  gap: 12px;
}

.share-header h1 {
  margin-top: 0;
}

.share-empty {
  padding: 60px 0;
  color: var(--muted);
  text-align: center;
}

.kb-sidebar {
  width: var(--sidebar-width);
  border-right: 1px solid var(--border);
  background: transparent;
  padding: 16px 12px;
  position: sticky;
  top: 24px;
  height: calc(100vh - 48px);
  max-height: none;
  align-self: flex-start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}

.kb-side-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

.kb-side-body:hover,
.kb-side-body:focus-within {
  scrollbar-width: thin;
}

.kb-side-body::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.kb-side-body:hover::-webkit-scrollbar,
.kb-side-body:focus-within::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.kb-side-body::-webkit-scrollbar-thumb {
  background: rgba(90, 123, 255, 0.35);
  border-radius: 999px;
}

.kb-side-body::-webkit-scrollbar-track {
  background: transparent;
}

.kb-side-title {
  font-weight: 700;
  color: #2c3766;
  margin: 2px 4px 10px;
  flex: 0 0 auto;
  font-size: 0.85rem;
}

.kb-side-tabs {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 4px 6px 10px;
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}

.kb-side-tab {
  border: none;
  background: transparent;
  color: #5a6b9a;
  padding: 6px 2px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  position: relative;
}

.kb-side-tab.is-active {
  color: var(--primary-700);
}

.kb-side-tab.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -11px;
  height: 2px;
  background: var(--primary);
  border-radius: 999px;
}

.kb-side-panel {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.kb-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-grid;
  min-width: 100%;
  width: max-content;
  gap: 4px;
}

.kb-tree-children {
  padding-left: 12px;
}

.kb-tree[data-level="0"] {
  padding-left: 0;
}

.kb-tree-node {
  list-style: none;
}

.kb-tree-row {
  display: flex;
  align-items: center;
  gap: 2px;
}

.kb-tree-toggle,
.kb-tree-spacer {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kb-tree-toggle {
  border: none;
  background: transparent;
  color: #6c7bd8;
  cursor: pointer;
  border-radius: 6px;
}

.kb-tree-toggle::before {
  content: "";
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 9px solid currentColor;
  transition: transform 120ms ease;
}

.kb-tree-node.is-open > .kb-tree-row .kb-tree-toggle::before {
  transform: rotate(90deg);
}

.kb-tree-node.is-collapsed > .kb-tree-children {
  display: none;
}

.kb-tree-item,
.kb-tree-folder {
  display: block;
  padding: 5px 7px;
  border-radius: 10px;
  color: var(--text);
  border: 1px solid transparent;
  flex: 1;
  white-space: nowrap;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
  font-size: 0.82rem;
}

.kb-tree-item:hover {
  text-decoration: none;
  transform: translateX(2px);
}

.kb-tree-item.is-active {
  background: #e9eeff;
  color: var(--primary-700);
  font-weight: 600;
  border-color: #dbe3ff;
}

.kb-tree-folder {
  color: #55608c;
  font-weight: 600;
  font-size: 0.8rem;
}

.kb-main {
  flex: 1;
  padding: 32px 40px;
  min-width: 0;
  background: var(--surface);
}

.share-toc {
  width: var(--toc-width);
  border-right: 1px solid var(--border);
  background: transparent;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  position: sticky;
  top: 24px;
  height: calc(100vh - 48px);
  max-height: none;
  align-self: flex-start;
}

.share-toc-title {
  font-weight: 700;
  color: #2c3766;
  font-size: 0.85rem;
}

.share-toc-body {
  flex: 1;
  overflow: auto;
  min-height: 0;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

.share-toc-body:hover,
.share-toc-body:focus-within {
  scrollbar-width: thin;
}

.share-toc-body::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.share-toc-body:hover::-webkit-scrollbar,
.share-toc-body:focus-within::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.share-toc-body::-webkit-scrollbar-thumb {
  background: rgba(90, 123, 255, 0.35);
  border-radius: 999px;
}

.share-toc-body::-webkit-scrollbar-track {
  background: transparent;
}

.share-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-grid;
  min-width: 100%;
  width: max-content;
  gap: 4px;
}

.share-toc-children {
  padding-left: 12px;
}

.share-toc-node {
  list-style: none;
}

.share-toc-row {
  display: flex;
  align-items: center;
  gap: 2px;
}

.share-toc-toggle,
.share-toc-spacer {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.share-toc-toggle {
  border: none;
  background: transparent;
  color: #6c7bd8;
  cursor: pointer;
  border-radius: 6px;
}

.share-toc-toggle::before {
  content: "";
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 6px solid currentColor;
  transition: transform 120ms ease;
}

.share-toc-node.is-open > .share-toc-row .share-toc-toggle::before {
  transform: rotate(90deg);
}

.share-toc-node.is-collapsed > .share-toc-children {
  display: none;
}

.share-toc-link {
  display: block;
  padding: 3px 6px;
  border-radius: 8px;
  color: var(--text);
  border: 1px solid transparent;
  flex: 1;
  white-space: nowrap;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
  font-size: 0.8rem;
}

.share-toc-link:hover {
  text-decoration: none;
  border-color: #dbe3ff;
  background: #f1f5ff;
  transform: translateX(2px);
}

.share-toc-link.is-active {
  background: #e9eeff;
  color: var(--primary-700);
  font-weight: 600;
  border-color: #dbe3ff;
}

.share-toc-empty {
  color: var(--muted);
  font-size: 0.9rem;
}

.scroll-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, #5a7bff, #7d95ff);
  color: #fff;
  box-shadow: 0 12px 24px rgba(32, 48, 90, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 20;
}

.scroll-top svg {
  width: 20px;
  height: 20px;
}

.scroll-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.kb-header {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.kb-title {
  margin: 0;
  font-size: 28px;
  font-family: var(--font-display);
}

.share-content .kb-header,
.kb-main .kb-header {
  max-width: 920px;
  margin: 0 auto 18px;
}

.share-article {
  /* max-width: 920px; */
  margin: 0 auto;
}

.share-article .kb-header {
  max-width: none;
  margin: 0 0 18px;
}

.kb-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

.kb-breadcrumbs > *::after {
  content: "/";
  margin: 0 6px;
  color: #cbd2e6;
}

.kb-breadcrumbs > *:last-child::after {
  content: "";
  margin: 0;
}

.kb-back {
  font-weight: 600;
  color: var(--primary-700);
}

.kb-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kb-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #eef2ff;
  color: #4159e3;
  font-size: 0.82rem;
  font-weight: 600;
}

.kb-directory {
  display: grid;
  gap: 10px;
}

.kb-dir-head,
.kb-dir-row {
  display: grid;
  grid-template-columns: 2fr 2fr 1fr;
  gap: 16px;
  align-items: center;
}

.kb-dir-head {
  font-size: 0.82rem;
  color: var(--muted);
  padding: 0 12px;
}

.kb-dir-row {
  padding: 12px;
  border-radius: 12px;
  background: #f8faff;
  border: 1px solid transparent;
  color: var(--text);
}

.kb-dir-row:hover {
  text-decoration: none;
}

.kb-dir-row:hover {
  border-color: #dbe3ff;
  background: #f1f5ff;
}

.kb-dir-title {
  font-weight: 600;
}

.kb-dir-path,
.kb-dir-time {
  color: var(--muted);
  font-size: 0.88rem;
}

.kb-dir-time {
  text-align: right;
}

.markdown-source {
  display: none;
}

.markdown-body {
  line-height: 1.8;
  font-size: 16px;
  color: #2d3440;
  overflow-wrap: anywhere;
  word-break: break-word;
  max-width: 100%;
  min-width: 0;
}

.markdown-body > * {
  max-width: 100%;
}

.share-content .markdown-body,
.kb-main .markdown-body {
  max-width: 920px;
  margin: 0 auto;
}

.share-article .markdown-body {
  max-width: none;
  margin: 0;
}

.markdown-body pre,
.markdown-body .highlight {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
}

.markdown-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
}

.markdown-body img,
.markdown-body svg,
.markdown-body video {
  max-width: 100%;
  height: auto;
}

.markdown-body iframe,
.markdown-body embed,
.markdown-body object {
  max-width: 100%;
}

.markdown-body .katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.markdown-body pre code {
  display: inline-block;
  min-width: max-content;
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
  max-width: none;
}

.markdown-body .katex {
  max-width: 100%;
  overflow-x: auto;
}

.share-side-trigger {
  position: fixed;
  left: 20px;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  z-index: 1100;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: none;
  background: #fff;
  color: #2c3766;
  box-shadow: 0 12px 24px rgba(32, 48, 90, 0.2);
  cursor: pointer;
  font-weight: 600;
}

.share-side-trigger svg {
  width: 18px;
  height: 18px;
}

.share-side-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
  z-index: 1000;
}

body.share-side-open .share-side-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  font-family: var(--font-display);
  margin-top: 1.4em;
}

.markdown-body strong,
.markdown-body b {
  font-weight: 700;
}

.layout-share .markdown-body h1,
.layout-share .markdown-body h2,
.layout-share .markdown-body h3,
.layout-share .markdown-body h4,
.layout-share .markdown-body h5,
.layout-share .markdown-body h6 {
  scroll-margin-top: 120px;
}

.markdown-body pre {
  border-radius: 12px;
}

.katex-block {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.markdown-body .katex-display::-webkit-scrollbar,
.katex-block::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
}

.markdown-body table th,
.markdown-body table td {
  border: 1px solid #e6e9f2;
  padding: 8px 10px;
}

.markdown-body blockquote {
  border-left: 4px solid #cad4ff;
  background: #f5f7ff;
  padding: 10px 16px;
  color: #46506b;
}

.markdown-body img {
  max-width: 100%;
  border-radius: 12px;
}

.markdown-body .mermaid {
  background: #ffffff;
  border-radius: 12px;
  padding: 12px;
}

/* Announcement modal */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  z-index: 1000;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
}

.modal-card {
  position: relative;
  width: min(560px, 94vw);
  background: var(--surface);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
  z-index: 1;
}

.modal-header {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.modal-body {
  display: grid;
  gap: 12px;
  max-height: 60vh;
  overflow: auto;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}

.announcement-item {
  padding: 12px;
  border-radius: 12px;
  background: #f5f7ff;
}

.announcement-title {
  font-weight: 600;
  margin-bottom: 6px;
}

.announcement-content {
  color: var(--muted);
  font-size: 0.92rem;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  z-index: 1000;
}

.modal-card {
  width: min(520px, 94vw);
  background: var(--surface);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

/* Markdown alerts */
.md-alert {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  margin: 14px 0;
  font-size: 0.95rem;
}

.md-alert--info,
.md-alert--note,
.md-alert--tip {
  background: #eef4ff;
  border-color: #cbd6ff;
  color: #2f54c7;
}

.md-alert--success {
  background: #eef7f2;
  border-color: #c9e6d7;
  color: #1f6b4d;
}

.md-alert--warning {
  background: #fff5e9;
  border-color: #f0b45b;
  color: #b7641f;
}

.md-alert--danger {
  background: #fff1f1;
  border-color: #f3c6c6;
  color: #bf2f2f;
}

.stats-settings {
  margin-bottom: 16px;
}

.stats-note {
  margin-top: 8px;
}

.stats-block {
  margin-top: 18px;
}

.stats-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 10px;
}

.stats-source {
  word-break: break-all;
}

.stats-charts {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.stats-chart {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: var(--surface-muted);
}

.stats-subtitle {
  font-weight: 700;
  margin-bottom: 8px;
}

.stats-chart-list {
  display: grid;
  gap: 8px;
}

.stats-chart-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(120px, 2fr) auto;
  gap: 10px;
  align-items: center;
}

.stats-label {
  font-size: 0.9rem;
}

.stats-bar-track {
  height: 8px;
  background: #e6eaf3;
  border-radius: 999px;
  overflow: hidden;
}

.stats-bar {
  height: 100%;
  background: #5b8def;
  border-radius: 999px;
}

.stats-value {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 0.9rem;
  min-width: 36px;
  text-align: right;
}

.stats-toggle {
  margin-top: 6px;
}

.stats-actions .inline-form {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

@media (max-width: 960px) {
  .app-shell {
    display: block;
  }

  .app-sidebar {
    width: min(78vw, 280px);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    border-right: 1px solid var(--border);
    border-bottom: none;
    transform: translateX(-100%);
    transition: transform 200ms ease, opacity 200ms ease;
    opacity: 0;
    pointer-events: none;
    z-index: 9;
  }

  body.app-side-open .app-sidebar {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }

  .app-nav {
    grid-auto-flow: row;
  }

  .app-topbar {
    align-items: center;
    gap: 12px;
  }

  .app-side-trigger {
    display: inline-flex;
  }

  .search-box {
    width: 100%;
  }

  .table {
    display: block;
    overflow-x: auto;
    width: 100%;
  }

  .table th,
  .table td {
    white-space: nowrap;
  }

  .share-shell {
    flex-direction: column;
  }

  .share-shell--doc,
  .share-shell--notebook {
    background: var(--surface);
  }

  .share-nav {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    position: static;
    top: auto;
    max-height: none;
  }

  .kb-sidebar,
  .share-toc {
    width: min(78vw, 320px);
    border-right: 1px solid var(--border);
    border-bottom: none;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    max-height: none;
    background: var(--surface);
    box-shadow: var(--shadow);
    transform: translateX(-100%);
    transition: transform 200ms ease, opacity 200ms ease;
    opacity: 0;
    pointer-events: none;
    z-index: 1001;
  }

  .share-content,
  .kb-main {
    padding: 24px 20px 40px;
  }

  .share-page {
    padding: 0 16px;
  }

  .share-footer {
    max-width: 100%;
    background: var(--surface);
  }

  .kb-dir-head,
  .kb-dir-row {
    grid-template-columns: 1fr;
  }

  .kb-dir-time {
    text-align: left;
  }

  .scroll-top {
    right: 20px;
    bottom: 20px;
  }

  .share-side-trigger {
    display: inline-flex;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px) + 48px);
  }

  body.share-side-open {
    overflow: hidden;
  }

  body.share-side-open .kb-sidebar,
  body.share-side-open .share-toc {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }

  .markdown-body {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .markdown-body h1,
  .markdown-body h2,
  .markdown-body h3,
  .markdown-body h4,
  .markdown-body h5,
  .markdown-body h6,
  .markdown-body p,
  .markdown-body li,
  .markdown-body blockquote,
  .markdown-body td,
  .markdown-body th,
  .markdown-body a,
  .markdown-body code {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .markdown-body pre,
  .markdown-body .highlight,
  .markdown-body table,
  .markdown-body .katex-display {
    overflow-x: auto;
    max-width: 100%;
  }

  .markdown-body pre,
  .markdown-body pre code {
    white-space: pre;
  }

  .markdown-body pre code {
    word-break: normal;
    overflow-wrap: normal;
  }
}