:root {
  --primary: #3b82f6;
  --secondary: #1e40af;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --white: #ffffff;
  --green: #22c55e;
  --purple: #a855f7;
  --orange: #f97316;
  --red: #ef4444;
  --indigo: #6366f1;
  --pink: #ec4899;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--gray-800);
  background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
  line-height: 1.5;
}

::-webkit-scrollbar {
  width: 15px;
  height: 15px;
}

::-webkit-scrollbar-thumb {
  border: 4px solid transparent;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.4);
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  border-color: rgba(0, 0, 0, 0.4);
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

svg {
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.brand {
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 2rem;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--gray-700);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.mobile-menu-button {
  color: var(--gray-700);
  background: transparent;
  padding: 0.5rem;
}

.mobile-menu {
  display: none;
  background: var(--white);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu-inner {
  padding: 0.5rem 1rem;
}

.mobile-menu .nav-link {
  display: block;
}

.hero {
  position: relative;
  padding: 3rem 1rem;
  text-align: center;
}

.hero-inner {
  max-width: 56rem;
  margin: 0 auto;
}

.hero h1 {
  margin: 0 0 1rem;
  color: var(--gray-800);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
}

.hero p {
  max-width: 42rem;
  margin: 0 auto;
  color: var(--gray-600);
  font-size: 1.125rem;
  line-height: 1.75rem;
}

.editor-band {
  padding: 1rem 0;
  background: var(--white);
}

.section {
  padding: 4rem 0;
}

.section-white {
  background: var(--white);
}

.section-gray {
  background: var(--gray-50);
}

.section-gradient {
  background: linear-gradient(90deg, #2563eb 0%, #4338ca 100%);
  color: var(--white);
}

.section-center {
  max-width: 56rem;
  margin: 0 auto;
  text-align: center;
}

.section-title {
  margin: 0 0 1rem;
  color: var(--gray-800);
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 2.25rem;
}

.section-lead {
  max-width: 42rem;
  margin: 0 auto;
  color: var(--gray-600);
  font-size: 1.125rem;
  line-height: 1.75rem;
}

.text-white .section-title,
.text-white .section-lead {
  color: var(--white);
}

.feature-grid {
  display: grid;
  gap: 2rem;
  margin-top: 4rem;
}

.feature-card {
  padding: 1.5rem;
  border-radius: 0.75rem;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-0.5rem);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

.feature-blue {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.feature-green {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
}

.feature-purple {
  background: linear-gradient(135deg, #faf5ff 0%, #f3e8ff 100%);
}

.feature-orange {
  background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
}

.icon-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  color: var(--white);
  border-radius: 9999px;
}

.icon-primary {
  background: var(--primary);
}

.icon-green {
  background: var(--green);
}

.icon-purple {
  background: var(--purple);
}

.icon-orange {
  background: var(--orange);
}

.icon-indigo {
  background: var(--indigo);
}

.icon-pink {
  background: var(--pink);
}

.feature-card h3,
.usage-card h3,
.faq-item h3,
.step h3 {
  margin: 0 0 0.5rem;
  color: var(--gray-800);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.75rem;
}

.feature-card p,
.usage-card p,
.faq-item p,
.step p,
.single-card p,
.single-card li {
  margin: 0;
  color: var(--gray-600);
}

.usage-grid {
  display: grid;
  gap: 2rem;
  margin-top: 4rem;
}

.usage-card,
.faq-item,
.single-card {
  background: var(--white);
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

.usage-card {
  padding: 2rem;
  transition: box-shadow 0.15s ease;
}

.usage-card:hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.usage-heading {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.mini-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 3rem;
  height: 3rem;
  margin-right: 1rem;
  border-radius: 0.5rem;
}

.mini-blue {
  color: var(--primary);
  background: #dbeafe;
}

.mini-green {
  color: #16a34a;
  background: #dcfce7;
}

.mini-purple {
  color: #9333ea;
  background: #f3e8ff;
}

.mini-orange {
  color: #ea580c;
  background: #ffedd5;
}

.mini-indigo {
  color: #4f46e5;
  background: #e0e7ff;
}

.mini-pink {
  color: #db2777;
  background: #fce7f3;
}

.steps {
  display: grid;
  gap: 2rem;
  max-width: 56rem;
  margin: 4rem auto 0;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 3rem;
  height: 3rem;
  color: var(--white);
  background: var(--primary);
  border-radius: 9999px;
  font-size: 1.125rem;
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 1.5rem;
  max-width: 56rem;
  margin: 4rem auto 0;
}

.faq-item {
  padding: 1.5rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.cta-title {
  margin: 0 0 1rem;
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 2.25rem;
}

.cta-text {
  margin: 0 0 2rem;
  font-size: 1.25rem;
  line-height: 1.75rem;
}

.btn,
.tool-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  color: var(--white);
  font-weight: 500;
  transition: background-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-lg {
  min-height: 3.5rem;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
}

.btn-white {
  color: #2563eb;
  background: var(--white);
}

.btn-white:hover {
  background: var(--gray-100);
  transform: scale(1.05);
}

.btn-blue {
  background: #3b82f6;
}

.btn-blue:hover {
  background: #2563eb;
}

.btn-green {
  background: #22c55e;
}

.btn-green:hover {
  background: #16a34a;
}

.btn-purple {
  background: #a855f7;
}

.btn-purple:hover {
  background: #9333ea;
}

.btn-orange {
  background: #f97316;
}

.btn-orange:hover {
  background: #ea580c;
}

.btn-red {
  background: #ef4444;
}

.btn-red:hover {
  background: #dc2626;
}

.site-footer {
  padding: 3rem 0;
  color: var(--white);
  background: var(--gray-800);
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

.footer-brand {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 2rem;
}

.footer-text {
  max-width: 28rem;
  margin: 0 0 1.5rem;
  color: var(--gray-300);
}

.footer-title {
  margin: 0 0 1rem;
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.75rem;
}

.footer-list {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-list a,
.footer-bottom,
.footer-bottom a {
  color: var(--gray-300);
}

.footer-list a:hover,
.footer-bottom a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid #374151;
  font-size: 0.875rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.5rem;
}

.tool-box {
  width: 100%;
}

.tool-container {
  width: 100%;
}

.multi-cat-bar,
.multi-doc-bar {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.multi-cat-bar {
  padding: 0.75rem;
  border: 1px solid var(--gray-200);
  border-radius: 0.5rem;
  background: #f8fafc;
}

.cat-tabs,
.doc-tabs {
  display: flex;
  flex: 1 1 auto;
  gap: 0.5rem;
  min-width: 0;
  padding-bottom: 0.15rem;
  overflow-x: auto;
}

.cat-tab,
.cat-action,
.doc-tab,
.doc-action {
  min-height: 2.5rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.375rem;
  background: var(--white);
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.cat-tab,
.doc-tab {
  flex: 0 0 auto;
  max-width: 11rem;
  padding: 0.5rem 0.85rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cat-tab:hover,
.cat-action:hover,
.doc-tab:hover,
.doc-action:hover {
  background: var(--gray-100);
}

.cat-tab.dragging,
.doc-tab.dragging {
  opacity: 0.55;
}

.cat-tab.active,
.doc-tab.active {
  border-color: var(--primary);
  color: var(--primary);
  background: #eff6ff;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.12);
}

.cat-tab.active {
  color: #1d4ed8;
  background: #dbeafe;
}

.cat-actions,
.doc-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 0.5rem;
}

.cat-action,
.doc-action {
  padding: 0.5rem 0.85rem;
}

.cat-action.icon-action {
  min-width: 2.5rem;
  padding-left: 0.65rem;
  padding-right: 0.65rem;
  font-size: 1rem;
}

.cat-action.danger,
.doc-action.danger {
  color: #dc2626;
  border-color: #fecaca;
}

.cat-action.danger:hover,
.doc-action.danger:hover {
  background: #fef2f2;
}

.editor-panel {
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--white);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  padding: 0.55rem;
  border-bottom: 1px solid var(--gray-200);
  background: #f8fafc;
}

.toolbar button,
.toolbar select,
.toolbar label {
  min-height: 2rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.25rem;
  background: var(--white);
  color: var(--gray-700);
}

.toolbar button {
  min-width: 2rem;
  padding: 0.25rem 0.5rem;
}

.toolbar button:hover,
.toolbar select:hover,
.toolbar label:hover {
  background: var(--gray-100);
}

.toolbar select {
  padding: 0.25rem 0.5rem;
}

.toolbar label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

.toolbar input[type="color"] {
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  border: 0;
  background: transparent;
}

.rich-editor {
  min-height: 500px;
  max-height: 800px;
  padding: 1rem;
  overflow: auto;
  outline: 0;
}

.rich-editor:empty::before,
.plain-editor:placeholder-shown,
.code-editor:placeholder-shown,
.markdown-editor:placeholder-shown {
  color: #9ca3af;
}

.rich-editor:empty::before {
  content: attr(data-placeholder);
}

.rich-editor p,
.rich-editor ul,
.rich-editor ol,
.rich-editor blockquote {
  margin-top: 0;
}

.rich-editor img {
  max-width: 100%;
  height: auto;
}

.btn-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.plain-editor,
.markdown-editor,
.code-editor {
  display: block;
  width: 100%;
  min-height: 600px;
  padding: 1rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  color: var(--gray-800);
  background: var(--white);
  outline: none;
  resize: vertical;
}

.plain-editor:focus,
.markdown-editor:focus,
.code-editor:focus,
.control-input:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.tool-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
  color: var(--gray-500);
  font-size: 0.875rem;
}

.split-editor {
  display: grid;
  gap: 1rem;
}

.preview-panel {
  min-height: 600px;
  padding: 1rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  overflow: auto;
  background: var(--white);
}

.preview-panel h1,
.preview-panel h2,
.preview-panel h3 {
  margin-top: 0;
}

.preview-panel pre {
  padding: 1rem;
  border-radius: 0.5rem;
  overflow: auto;
  color: #e5e7eb;
  background: #111827;
}

.preview-panel code {
  padding: 0.15rem 0.3rem;
  border-radius: 0.25rem;
  background: var(--gray-100);
}

.preview-panel pre code {
  padding: 0;
  background: transparent;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.control-input {
  min-height: 2.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.25rem;
  background: var(--white);
  color: var(--gray-700);
}

.code-editor {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  tab-size: 2;
}

.code-editor.dark {
  color: #e5e7eb;
  background: #111827;
  border-color: #374151;
}

.code-preview-frame {
  width: 100%;
  min-height: 600px;
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  background: var(--white);
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 20;
  max-width: min(24rem, calc(100vw - 2rem));
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  color: var(--white);
  background: rgba(31, 41, 55, 0.95);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  transform: translateY(1rem);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.single-main {
  min-height: 100vh;
  padding: 3rem 0;
  background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
}

.single-heading {
  max-width: 56rem;
  margin: 0 auto 3rem;
  text-align: center;
}

.single-heading h1 {
  margin: 0 0 1rem;
  color: var(--gray-800);
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 2.25rem;
}

.single-heading p {
  max-width: 42rem;
  margin: 0 auto;
  color: var(--gray-600);
  font-size: 1.125rem;
}

.single-stack {
  display: grid;
  gap: 2.5rem;
}

.single-card {
  padding: 2rem;
}

.single-card h2 {
  margin: 0 0 1.5rem;
  color: var(--gray-800);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 2rem;
}

.single-card h3 {
  margin: 1.25rem 0 0.5rem;
  color: var(--gray-800);
  font-size: 1.125rem;
  font-weight: 600;
}

.single-card p + p,
.single-card ul + p,
.single-card p + ul {
  margin-top: 1rem;
}

.single-card ul {
  margin: 1rem 0 0;
  padding-left: 1.5rem;
}

.single-card a {
  color: var(--primary);
}

.single-card a:hover {
  text-decoration: underline;
}

.single-grid {
  display: grid;
  gap: 2rem;
}

.single-mini {
  padding: 1.5rem;
  border-radius: 0.5rem;
}

.single-mini h3 {
  margin-top: 0;
}

.bg-blue-soft {
  background: #eff6ff;
}

.bg-green-soft {
  background: #f0fdf4;
}

.bg-purple-soft {
  background: #faf5ff;
}

.bg-orange-soft {
  background: #fff7ed;
}

@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .mobile-menu-button,
  .mobile-menu {
    display: none !important;
  }

  .hero h1 {
    font-size: 1.875rem;
    line-height: 2.25rem;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .usage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .footer-about {
    grid-column: span 2 / span 2;
  }

  .footer-bottom {
    flex-direction: row;
  }

  .split-editor {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .single-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }

  .feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .usage-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .brand {
    font-size: 1.25rem;
  }

  .hero,
  .section,
  .single-main {
    padding-left: 0;
    padding-right: 0;
  }

  .section {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  .feature-grid,
  .usage-grid,
  .steps,
  .faq-list {
    margin-top: 2.5rem;
  }

  .usage-card,
  .single-card {
    padding: 1.5rem;
  }

  .step {
    gap: 1rem;
  }

  .btn-box {
    gap: 0.5rem;
  }

  .multi-cat-bar,
  .multi-doc-bar {
    flex-direction: column;
  }

  .cat-actions,
  .doc-actions {
    display: grid;
  }

  .cat-actions {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .doc-actions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cat-action,
  .doc-action {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    white-space: nowrap;
  }

  .tool-button {
    flex: 1 1 calc(50% - 0.5rem);
    padding-left: 0.75rem;
    padding-right: 0.75rem;
    white-space: nowrap;
  }
}

.md-status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0 0 0.75rem;
  color: var(--gray-500);
  font-size: 0.875rem;
}

.md-status-row span {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--gray-200);
  border-radius: 0.375rem;
  background: var(--gray-50);
}

.md-editor-shell {
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--white);
}

.md-docbar {
  display: grid;
  gap: 0.75rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--gray-200);
  background: #f8fafc;
}

.md-doc-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 600;
}

.md-doc-title input {
  width: 100%;
  min-width: 0;
  min-height: 2.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.25rem;
  color: var(--gray-800);
  background: var(--white);
  outline: none;
}

.md-doc-title input:focus,
#markdownInput:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.md-mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.25rem;
}

.md-mode-tab {
  min-height: 2.5rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.375rem;
  color: var(--gray-700);
  background: var(--white);
  font-size: 0.875rem;
  font-weight: 500;
}

.md-mode-tab:hover {
  background: var(--gray-100);
}

.md-mode-tab.active {
  border-color: var(--primary);
  color: var(--primary);
  background: #eff6ff;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.12);
}

.md-toolbar {
  border-bottom: 1px solid var(--gray-200);
}

.md-editor-grid {
  display: grid;
  gap: 0;
  background: var(--gray-100);
}

.md-panel {
  min-width: 0;
  background: var(--white);
}

.md-panel + .md-panel {
  border-top: 1px solid var(--gray-200);
}

.md-panel-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 2.75rem;
  gap: 1rem;
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--gray-200);
  background: #f8fafc;
}

.md-panel-bar h2 {
  margin: 0;
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 600;
}

.md-panel-bar span {
  color: var(--gray-500);
  font-size: 0.8125rem;
  white-space: nowrap;
}

.md-small-action {
  min-height: 2rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.25rem;
  color: var(--gray-700);
  background: var(--white);
  font-size: 0.875rem;
}

#markdownInput {
  display: block;
  width: 100%;
  height: calc(70vh - 2.75rem);
  min-height: 560px;
  padding: 1rem;
  border: 0;
  color: var(--gray-800);
  background: var(--white);
  outline: none;
  resize: vertical;
  tab-size: 2;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.95rem;
  line-height: 1.7;
}

.markdown-body {
  height: calc(70vh - 2.75rem);
  min-height: 560px;
  padding: 1rem;
  overflow: auto;
  color: var(--gray-800);
  background: var(--white);
}

.md-editor-grid[data-mode="edit"] .md-preview-pane {
  display: none;
}

.md-editor-grid[data-mode="preview"] .md-edit-pane {
  display: none;
}

.md-action-row {
  padding: 0.85rem;
  border-top: 1px solid var(--gray-200);
  background: #f8fafc;
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body > :last-child {
  margin-bottom: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin: 1.25em 0 0.55em;
  color: #111827;
  line-height: 1.25;
}

.markdown-body h1 {
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--gray-200);
  font-size: 2rem;
}

.markdown-body h2 {
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--gray-100);
  font-size: 1.5rem;
}

.markdown-body h3 {
  font-size: 1.25rem;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body blockquote,
.markdown-body table,
.markdown-body pre {
  margin: 0 0 1rem;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.45rem;
}

.markdown-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.markdown-body code {
  padding: 0.12rem 0.32rem;
  border-radius: 0.25rem;
  color: #be123c;
  background: #fff1f2;
  font-size: 0.92em;
}

.markdown-body pre {
  padding: 1rem;
  border-radius: 0.5rem;
  overflow: auto;
  color: #e5e7eb;
  background: #111827;
}

.markdown-body pre code {
  padding: 0;
  color: inherit;
  background: transparent;
}

.markdown-body blockquote {
  padding: 0.7rem 1rem;
  border-left: 4px solid var(--primary);
  border-radius: 0 0.5rem 0.5rem 0;
  color: var(--gray-600);
  background: #eff6ff;
}

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

.markdown-body th,
.markdown-body td {
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--gray-200);
  text-align: left;
}

.markdown-body th {
  background: var(--gray-100);
  font-weight: 700;
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
}

.markdown-body hr {
  height: 1px;
  margin: 1.5rem 0;
  border: 0;
  background: var(--gray-200);
}

.markdown-body .task-list {
  list-style: none;
  padding-left: 0;
}

.markdown-body .task-list input {
  margin-right: 0.45rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}

.section-head {
  max-width: 56rem;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-head h1 {
  margin: 0 0 1rem;
  color: var(--gray-800);
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 2.25rem;
}

.section-head p {
  max-width: 42rem;
  margin: 0 auto;
  color: var(--gray-600);
  font-size: 1.125rem;
}

.eyebrow {
  margin-bottom: 0.75rem !important;
  color: var(--primary) !important;
  font-size: 0.875rem !important;
  font-weight: 700;
}

.faq-item h2 {
  margin: 0 0 0.5rem;
  color: var(--gray-800);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.75rem;
}

.md-brief-section {
  padding: 2.5rem 0;
}

.md-brief-grid {
  margin-top: 0;
}

.md-plain-card {
  max-width: 56rem;
  margin: 0 auto;
}

.md-plain-card ul {
  margin: 0;
}

.md-footer-simple {
  margin-top: 0;
}

@media (min-width: 640px) {
  .md-docbar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .md-mode-tabs {
    min-width: 15rem;
  }
}

@media (min-width: 768px) {
  .md-editor-grid[data-mode="split"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .md-editor-grid[data-mode="split"] .md-panel + .md-panel {
    border-top: 0;
    border-left: 1px solid var(--gray-200);
  }
}

@media (min-width: 1180px) {
  .md-editor-grid[data-mode="split"] {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }
}

@media (max-width: 520px) {
  .md-status-row {
    gap: 0.5rem;
  }

  .md-doc-title {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }

  #markdownInput,
  .markdown-body {
    min-height: 420px;
  }
}