*, *::before, *::after { box-sizing: border-box; }
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --accent: #0d9488;
  --accent-light: #f0fdfa;
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --success: #059669;
  --success-light: #f0fdf4;
  --warning: #b45309;
  --warning-light: #fef3c7;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);
}
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, #f0f4ff 0%, #f5f7fa 50%, #f0fdfa 100%);
  min-height: 100vh;
  color: var(--neutral-900);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}
a, button, input, select, textarea { -webkit-tap-highlight-color: transparent; }

/* ── Navbar ── */
.navbar {
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--neutral-200);
  padding: 0 32px;
  display: flex;
  align-items: center;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}
.navbar-brand {
  font-weight: 700;
  font-size: 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  margin-right: 44px;
  letter-spacing: -.3px;
}
.navbar-nav { display: flex; gap: 8px; flex: 1; }
.navbar-nav a { display: inline-flex; align-items: center; gap: 8px; }
.navbar-nav a {
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  color: var(--neutral-500);
  transition: all .2s;
  position: relative;
}
.navbar-nav a:hover { background: var(--neutral-100); color: var(--neutral-800); }
.navbar-nav a.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}
.navbar-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--neutral-600);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
}
.navbar-toggle:hover { background: var(--neutral-100); }
@media (max-width: 700px) { .navbar-toggle { margin-left: auto; } }

/* language toggle in the navbar */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  margin-left: auto;
  padding: 6px 14px;
  border: 1.5px solid var(--neutral-300);
  border-radius: 8px;
  background: transparent;
  color: var(--neutral-500);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.lang-toggle:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* language switch fade animation */
body.i18n-anim > * { transition: opacity .16s ease; }
body.i18n-anim.i18n-out > * { opacity: 0; }

/* ── Container ── */
body > .container { width: 100%; max-width: 1040px; margin: 0 auto; padding: 40px 24px 64px; min-height: 500px; flex-shrink: 0; }

/* ── Card ── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.card {
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  padding: 40px 44px;
  border: 1px solid var(--neutral-200);
  animation: fade-up .45s ease both;
}
.card-wide { max-width: 100%; }
.card-nopad { padding: 0; overflow: hidden; }

/* ── Hero ── */
.hero {
  padding: 60px 44px;
  color: #fff;
  text-align: center;
}
.hero h1 {
  color: #fff;
  font-size: 50px;
  margin: 0 0 12px;
  letter-spacing: -.5px;
  font-weight: 700;
}
.hero-sub {
  font-size: 20px;
  margin: 0 0 10px;
  opacity: .92;
  font-weight: 500;
}
.hero-ver {
  font-size: 17px;
  margin: 0;
  opacity: .7;
}
.hero-actions {
  margin-top: 28px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn-hero-outline {
  background: rgba(255,255,255,.15);
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  font-size: 16px;
  transition: all .2s;
  border: 3px solid rgba(255,255,255,.2);
}
.btn-hero-outline:hover { background: rgba(255,255,255,.25); }

/* ── Typography ── */
h1 {
  font-size: 30px;
  margin: 0 0 6px;
  color: var(--neutral-900);
  font-weight: 400;
  letter-spacing: -.4px;
}
.subtitle {
  color: var(--neutral-500);
  font-size: 16px;
  margin: 0 0 32px;
  line-height: 1.6;
}
.hint { font-weight: 400; color: var(--neutral-400); }

/* ── Form ── */
label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--neutral-700);
  margin-bottom: 6px;
  letter-spacing: .2px;
}
input, select, textarea {
  width: 100%;
  padding: 11px 15px;
  border: 1.5px solid var(--neutral-200);
  border-radius: 8px;
  font-size: 16px;
  color: var(--neutral-900);
  background: #fff;
  transition: all .2s;
}
input:hover, select:hover { border-color: var(--neutral-300); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
textarea {
  resize: vertical;
  font-family: "SF Mono", "Cascadia Code", "Consolas", monospace;
  font-size: 15px;
}
input[type=file] {
  padding: 10px;
  background: var(--neutral-50);
  cursor: pointer;
}
input[type=file]::file-selector-button {
  padding: 8px 18px;
  border: none;
  border-radius: 6px;
  background: var(--neutral-100);
  color: var(--neutral-700);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  margin-right: 12px;
  transition: background .15s;
}
input[type=file]::file-selector-button:hover { background: var(--neutral-200); }

.row { display: flex; gap: 20px; }
.row > div { flex: 1; }
.col { margin-bottom: 20px; }
.col-offset { padding-top: 24px; }

.checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}
.checkbox input[type=checkbox] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}
.checkbox label { margin: 0; cursor: pointer; font-weight: 500; font-size: 16px; }

/* ── Buttons ── */
.actions { display: flex; gap: 16px; margin-top: 28px; flex-wrap: wrap; }
.actions-sm { margin-top: 16px; margin-bottom: 18px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 32px;
  border-radius: 8px;
  border: none;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: all .2s;
  line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 2px 8px rgba(37,99,235,.25);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37,99,235,.35);
}
.btn-secondary {
  background: var(--neutral-100);
  color: var(--neutral-700);
  border: 1px solid var(--neutral-200);
}
.btn-secondary:hover { background: var(--neutral-200); }
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 9px 20px; font-size: 15px; border-radius: 7px; }
.btn-outline {
  background: transparent;
  color: var(--neutral-600);
  border: 1.5px solid var(--neutral-300);
}
.btn-outline:hover { border-color: var(--neutral-400); background: var(--neutral-50); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* ── Flash ── */
.flash {
  padding: 14px 18px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideDown .3s ease;
}
@keyframes slideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.flash-error { background: var(--danger-light); color: #991b1b; border: 1px solid #fca5a5; }
.flash-success { background: var(--success-light); color: #166534; border: 1px solid #bbf7d0; }
.flash-offset { margin-top: 24px; }

/* ── Code block ── */
pre {
  background: #1a1b2e;
  color: #cdd6f4;
  padding: 20px;
  border-radius: 10px;
  overflow: auto;
  font-size: 14px;
  line-height: 1.65;
  max-height: 640px;
  font-family: "SF Mono", "Cascadia Code", "JetBrains Mono", "Consolas", monospace;
}
code {
  background: var(--neutral-100);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--neutral-800);
}
code.small {
  padding: 2px 6px;
  font-size: 13px;
}

/* ── Info box ── */
.info-box {
  font-size: 15px;
  color: var(--neutral-600);
  background: var(--neutral-50);
  padding: 14px 18px;
  border-radius: 8px;
  border: 1px solid var(--neutral-200);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.info-box code {
  background: var(--neutral-200);
}

/* ── Section divider ── */
.section-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--neutral-700);
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--neutral-100);
  letter-spacing: .2px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-section { margin-bottom: 28px; }

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-error { background: var(--danger-light); color: var(--danger); }
.badge-pending { background: var(--warning-light); color: var(--warning); }

/* ── Loading ── */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Feature cards ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 36px;
}
.feature-card {
  border-radius: 12px;
  padding: 18px;
}
.feature-card-icon {
  font-size: 24px;
  margin-bottom: 6px;
  text-align: center;
}
.feature-card-title {
  font-weight: 600;
  font-size: 15px;
  text-align: center;
  color: var(--neutral-800);
}
.feature-card-desc {
  font-size: 14px;
  color: var(--neutral-500);
  line-height: 1.6;
  margin-top: 6px;
}

/* ── Tags ── */
.tag-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.tag {
  background: #fff;
  border: 1px solid var(--neutral-200);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--neutral-600);
}

/* ── Format cards (doc) ── */
.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 12px;
}
.format-card {
  background: var(--neutral-50);
  border: 1px solid var(--neutral-200);
  border-radius: 8px;
  padding: 16px;
}
.format-card-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--neutral-800);
  display: flex;
  align-items: center;
  gap: 8px;
}
.format-card-exts {
  font-size: 14px;
  color: var(--neutral-500);
  margin-top: 4px;
}

/* ── Parameter tables ── */
.table-params {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.table-params th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  color: var(--neutral-700);
  border-bottom: 1px solid var(--neutral-200);
}
.table-params td {
  padding: 10px 12px;
  color: var(--neutral-500);
  border-bottom: 1px solid var(--neutral-100);
}
.table-params td:first-child code,
.table-params th:first-child { white-space: nowrap; }
/* 3-column tables (Parameter | Default | Description): keep the Default
   column on one line so values like "单基因组" / "90 bp" don't wrap */
.table-params:has(th:nth-child(3)) td:nth-child(2),
.table-params:has(th:nth-child(3)) th:nth-child(2) { white-space: nowrap; }

/* ── Contact cards ── */
.contact-group {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.contact-card {
  background: var(--neutral-50);
  border: 1px solid var(--neutral-200);
  border-radius: 8px;
  padding: 16px 20px;
  flex: 1;
  min-width: 200px;
}
.contact-label {
  font-size: 12px;
  color: var(--neutral-400);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .3px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.contact-email {
  font-size: 15px;
  font-weight: 600;
  color: var(--neutral-800);
  margin: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.contact-role {
  font-size: 13px;
  color: var(--neutral-500);
}

/* ── TOC sidebar ── */
.toc {
  position: sticky;
  top: 88px;
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--neutral-200);
  padding: 18px;
  box-shadow: var(--shadow-sm);
}
.toc-title {
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--neutral-400);
  margin-bottom: 12px;
}
.toc-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.toc-link {
  padding: 6px 10px;
  border-radius: 5px;
  text-decoration: none;
  font-size: 14px;
  color: var(--neutral-600);
  transition: all .15s;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toc-link:hover { background: var(--neutral-100); color: var(--neutral-800); }

/* ── Search form ── */
.search-form {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.search-input-wrap { flex: 1; min-width: 260px; }
.search-btn-wrap { padding-bottom: 2px; }

/* ── Empty state ── */
.empty-state {
  margin-top: 32px;
  background: var(--neutral-50);
  border-radius: 10px;
  padding: 28px;
  border: 1px solid var(--neutral-200);
  text-align: center;
}
.empty-state-icon {
  font-size: 40px;
  margin-bottom: 12px;
  color: var(--neutral-400);
}
.empty-state-title {
  font-weight: 600;
  font-size: 16px;
  color: var(--neutral-700);
}
.empty-state-desc {
  font-size: 14px;
  color: var(--neutral-500);
  margin-top: 6px;
}

/* ── Citation blockquote ── */
.blockquote-cite {
  background: var(--primary-light);
  padding: 16px 20px;
  border-radius: 8px;
  border-left: 4px solid var(--primary);
  font-size: 15px;
  color: var(--neutral-700);
  line-height: 1.7;
  margin: 12px 0;
}

/* ── Icon spacing ── */
i.fas, i.far, i.fab { margin-right: 8px; }
.btn i, .badge i, .flash i, .info-box i, .checkbox i,
.navbar-nav i, .toc-links i, .format-card i, .contact-card i,
.tag-group i, .feature-card i, .hero-actions i, .search-form i,
.result-meta i, .result-status i, .result-header i { margin-right: 0; }

/* ── Misc ── */
.text-center { text-align: center; }
.text-muted { color: var(--neutral-400); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: 4px; }
.mb-20 { margin-bottom: 20px; }
.mb-32 { margin-bottom: 32px; }
.mt-20 { margin-top: 20px; }
.cli-hint { font-size: 14px; color: var(--neutral-500); }
.help-text { font-size: 12px; color: var(--neutral-400); margin-top: 4px; line-height: 1.4; }
.gap-0 { gap: 0; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: flex-start; }
.flex-center { display: flex; align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.divider { border: none; border-top: 1.5px solid var(--neutral-100); margin: 28px 0; }
.inline-form { display: inline; }

/* Footer */
footer {
  background: #1e3a5f;
  color: #c8d6e5;
  padding: 28px 0 0;
  margin-top: auto;
  flex-shrink: 0;
}
footer .container { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1.5fr;
  gap: 32px;
}
footer h3 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 10px;
}
footer p { font-size: 15px; line-height: 1.6; margin: 0 0 8px; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer ul li { margin-bottom: 8px; }
footer ul li a { color: #a0b4c8; font-size: 15px; }
footer ul li a:hover { color: #fff; }
footer .footer-contact p i { width: 18px; margin-right: 4px; }
.copyright {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 20px;
  padding: 12px 0;
  text-align: center;
}
.copyright p { font-size: 14px; margin: 0; color: #8899aa; }

/* Download page */
.pkg-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--neutral-200);
  margin-top: 16px;
}
.pkg-header-title { font-weight: 600; color: var(--neutral-700); font-size: 15px; }
.pkg-header-info { font-size: 12px; color: var(--neutral-400); }
.pkg-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--neutral-100);
}
.pkg-row:last-child { border-bottom: none; }
.pkg-info { display: flex; align-items: center; gap: 14px; }
.pkg-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  position: relative;
  background: var(--primary-light);
  border-radius: 8px;
  color: var(--primary);
  font-size: 22px;
}
.pkg-icon i {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.pkg-name { font-weight: 600; color: var(--neutral-800); font-size: 14px; }
.pkg-meta { font-size: 12px; color: var(--neutral-400); margin-top: 2px; }
.req-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 10px;
}
.req-col {
  background: var(--neutral-50);
  border: 1px solid var(--neutral-200);
  border-radius: 8px;
  padding: 16px 20px;
}
.req-col h4 { font-size: 15px; margin: 0 0 10px; color: var(--neutral-700); font-weight: 600; }
.req-col ul { margin: 0; padding-left: 18px; }
.req-col li { font-size: 13px; color: var(--neutral-600); margin-bottom: 4px; }
.cli-list { list-style: none; margin: 8px 0 4px; padding: 0; }
.cli-list li { font-size: 14px; color: var(--neutral-600); margin-bottom: 6px; }
.cli-list code { background: var(--neutral-100); }
.usage-options { line-height: 2; }
.usage-options code { background: var(--neutral-100); }

@media (max-width: 800px) {
  .toc { position: static; }
  .doc-layout { grid-template-columns: 1fr !important; }
  .table-params { font-size: 13px; }
  .table-params th, .table-params td { padding: 8px 8px; word-break: break-word; }
  .req-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr 1fr; gap: 24px; }
  footer { padding: 24px 0 0; }
  .navbar { padding: 0 16px; }
  .navbar-brand { font-size: 18px; margin-right: 16px; }
  .navbar-nav a { padding: 6px 10px; font-size: 13px; }
}
@media (max-width: 700px) {
  .navbar {
    padding: 0 10px;
    padding-left: max(10px, env(safe-area-inset-left));
    padding-right: max(10px, env(safe-area-inset-right));
    height: 52px;
    gap: 0;
    position: sticky;
    top: 0;
    z-index: 100;
  }
  .navbar-brand { margin-right: 8px; font-size: 16px; }
  .navbar-toggle { display: block; padding: 10px 12px; }
  .navbar-nav {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--neutral-200);
    padding: 8px;
    gap: 2px;
    z-index: 99;
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
    animation: nav-drop .16s ease;
  }
  @keyframes nav-drop {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .navbar-nav.open { display: flex; }
  .navbar-nav a { padding: 12px 14px; font-size: 14px; border-radius: 8px; }
  .navbar-nav a i { margin-right: 8px; width: 18px; text-align: center; }
  .container { padding: 16px 10px 32px; }
  .card { padding: 16px; border-radius: 10px; overflow-wrap: break-word; }
  .card-nopad { padding: 0; }
  .row { flex-direction: column; gap: 0; }
  .col { margin-bottom: 14px; }
  h1 { font-size: 22px; }
  .subtitle { font-size: 15px; margin-bottom: 20px; }
  .section-title { font-size: 15px; }
  .hero { padding: 32px 16px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 16px; }
  .hero-ver { font-size: 15px; }
  .hero-actions { gap: 10px; }
  .btn-hero-outline { padding: 10px 24px; font-size: 14px; }
  .actions { flex-direction: column; gap: 8px; }
  .actions .btn { justify-content: center; width: 100%; }
  .actions .btn-sm { width: auto; }
  .search-form { flex-direction: column; gap: 8px; }
  .search-input-wrap { min-width: 0; width: 100%; }
  .contact-group { flex-direction: column; gap: 12px; }
  .feature-grid { gap: 12px; }
  .feature-card { padding: 16px; }
  .feature-card-icon { font-size: 24px; }
  .feature-card-title { font-size: 15px; }
  .feature-card-desc { font-size: 13px; }
  .tag-group { gap: 8px; }
  .tag { padding: 6px 12px; font-size: 13px; }
  .format-grid { gap: 8px; }
  .format-card { padding: 12px; }
  .format-card-title { font-size: 14px; }
  .format-card-exts { font-size: 13px; }
  pre { font-size: 12px; padding: 12px; max-height: 400px; -webkit-overflow-scrolling: touch; }
  .info-box { font-size: 13px; padding: 10px 12px; gap: 6px; }
  .flash { font-size: 13px; padding: 10px 12px; }
  .badge { font-size: 12px; padding: 3px 8px; gap: 4px; }
  label { font-size: 14px; }
  input, select, textarea { font-size: 16px; padding: 11px 12px; }
  .checkbox label { font-size: 14px; }
  .btn-sm { min-height: 40px; }
  .content-area { padding: 20px 16px !important; }
  .input-label-row { flex-wrap: wrap; gap: 6px; }
  .footer-content { grid-template-columns: 1fr; gap: 24px; }
  footer { padding: 28px 0 0; padding-left: env(safe-area-inset-left); padding-right: env(safe-area-inset-right); }
  footer .container { padding: 0 10px; }
}
@media (max-width: 480px) {
  .navbar { padding: 0 8px; height: 48px; padding-left: max(8px, env(safe-area-inset-left)); padding-right: max(8px, env(safe-area-inset-right)); }
  .navbar-brand { font-size: 16px; margin-right: 6px; }
  .navbar-nav { top: 48px; }
  .navbar-nav a { padding: 12px 12px; font-size: 13px; }
  h1 { font-size: 20px; }
  .hero h1 { font-size: 24px; }
  .hero-sub { font-size: 14px; }
  .hero { padding: 24px 12px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn-hero-outline { display: inline-flex; align-items: center; justify-content: center; gap: 10px; text-align: center; }
  .card { padding: 12px; }
  .container { padding: 12px 8px 24px; }
  .doc-card { padding: 16px 12px !important; }
  .formats-box { padding: 16px !important; }
  .empty-state { padding: 20px 16px; }
  .empty-state-icon { font-size: 32px; }
  .footer-content { grid-template-columns: 1fr; gap: 20px; }
  footer { padding: 20px 0 0; padding-left: env(safe-area-inset-left); padding-right: env(safe-area-inset-right); }
  footer .container { padding: 0 8px; }
}