:root {
  color-scheme: light;
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  color: #191b23;
  background: #faf8ff;
  --canvas: #faf8ff;
  --surface: #fff;
  --surface-soft: #f3f3fe;
  --surface-strong: #ededf9;
  --ink: #191b23;
  --ink-muted: #434655;
  --primary: #2563eb;
  --primary-strong: #004ac6;
  --primary-soft: #dbe1ff;
  --outline: #c3c6d7;
  --outline-strong: #737686;
  --success: #167a3e;
  --success-soft: #e7f6ec;
  --error: #ba1a1a;
  --error-soft: #ffdad6;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; min-height: 100vh; overflow-x: clip; background: var(--canvas); color: var(--ink); }
.analytics-pixel { position: absolute; left: -9999px; }
button, input, select { font: inherit; }
button, a, summary, [role="button"] { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
img, video { max-width: 100%; }
[hidden], .hidden { display: none !important; }
::selection { color: #00174b; background: var(--primary-soft); }

.material-symbols-outlined {
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
  font-size: 22px;
  line-height: 1;
  vertical-align: middle;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  color: #fff;
  background: var(--primary-strong);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
  transition: transform 160ms var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--outline);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1280px, 100%);
  min-height: 64px;
  margin: 0 auto;
  padding: 0 32px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary-strong);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.brand__mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  color: #fff;
  background: var(--primary);
  border-radius: var(--radius-sm);
  font-size: 12px;
  letter-spacing: .02em;
}
.primary-nav { display: flex; align-items: center; gap: 24px; }
.primary-nav a {
  padding: 21px 0 18px;
  color: var(--ink-muted);
  border-bottom: 3px solid transparent;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease;
}
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--primary-strong); }
.primary-nav a[aria-current="page"] { border-color: var(--primary); }
.header-action {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: var(--primary-strong);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 160ms ease, background-color 160ms ease, transform 120ms var(--ease-out);
}
.header-action .material-symbols-outlined { font-size: 19px; }

main {
  width: min(1280px, 100%);
  margin: 0 auto;
  padding: 32px 32px 80px;
}
h1, h2, h3 { color: var(--ink); text-wrap: balance; }
p { text-wrap: pretty; }
h1 { margin: 0; font-size: 32px; line-height: 1.25; letter-spacing: -.02em; font-weight: 600; }
h2 { font-size: 24px; line-height: 1.33; letter-spacing: -.01em; font-weight: 600; }
h3 { font-size: 18px; line-height: 1.4; font-weight: 600; }

.hero {
  max-width: 780px;
  margin: 12px auto 32px;
  padding: 28px 0 8px;
  text-align: center;
}
.hero p { margin: 12px auto 18px; color: var(--ink-muted); font-size: 18px; line-height: 1.55; }
.trust-badge {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  color: var(--primary-strong);
  background: var(--primary-soft);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.trust-badge .material-symbols-outlined { font-size: 18px; }

.workspace, .layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr);
  align-items: start;
  gap: 24px;
}
.workspace__files { display: grid; gap: 16px; }
.dropzone {
  display: flex;
  min-height: 360px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  background: var(--surface);
  border: 2px dashed var(--outline);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms var(--ease-out);
}
.tool-page .dropzone { min-height: 330px; }
.dropzone.drag { border-color: var(--primary); background: #f2f5ff; transform: scale(.995); }
.dropzone:focus-visible { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .22); }
.dropzone .icon {
  display: grid;
  width: 72px;
  height: 72px;
  margin-bottom: 18px;
  place-items: center;
  color: #fff;
  background: var(--primary);
  border-radius: 50%;
  transition: transform 180ms var(--ease-out);
}
.dropzone .icon .material-symbols-outlined { font-size: 36px; }
.dropzone p { margin: 0; color: var(--ink-muted); font-size: 15px; line-height: 1.55; }
.dropzone p b { color: var(--ink); font-size: 18px; font-weight: 600; }
.dropzone input { display: none; }
.format-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 18px; }
.format-list span {
  padding: 5px 9px;
  color: var(--ink-muted);
  background: var(--surface-soft);
  border-radius: 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 500;
}

.panel {
  padding: 24px;
  background: var(--surface-soft);
  border: 1px solid var(--outline);
  border-radius: var(--radius-md);
}
.workspace__settings { position: sticky; top: 88px; }
.panel h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 24px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0;
}
.panel h2 .material-symbols-outlined { color: var(--primary-strong); }
.field { display: grid; gap: 7px; margin-bottom: 16px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field label { color: var(--ink-muted); font-size: 13px; font-weight: 600; }
.field__label-row { display: flex; align-items: center; justify-content: space-between; }
.field output, .range-row output { color: var(--primary-strong); font-family: "JetBrains Mono", monospace; font-size: 13px; font-variant-numeric: tabular-nums; font-weight: 500; }
.field input:not([type="range"]), .field select {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}
.field input::placeholder { color: #5d6070; opacity: 1; }
.field input:focus, .field select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .18); }
.field input[type="range"] { width: 100%; accent-color: var(--primary); cursor: pointer; }
.range-row { display: flex; align-items: center; gap: 12px; }
.range-row input { flex: 1; }
.range-legend { display: flex; justify-content: space-between; color: #5d6070; font-size: 11px; }
.tool-fields { display: grid; gap: 0; }
.hint { margin: -4px 0 16px; color: var(--ink-muted); font-size: 13px; line-height: 1.55; }

.process-btn, .download-btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #fff;
  background: var(--primary);
  border: 0;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 160ms ease, transform 120ms var(--ease-out), opacity 160ms ease;
}
.process-btn { width: 100%; padding: 12px 16px; }
.download-btn { padding: 11px 20px; }
.process-btn:disabled { color: #6c7282; background: #d7d9e3; cursor: not-allowed; opacity: 1; }
.process-btn:focus-visible, .download-btn:focus-visible, .header-action:focus-visible, .tool-link:focus-visible, .brand:focus-visible, .primary-nav a:focus-visible, .back-link:focus-visible, .text-button:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .32);
  outline-offset: 3px;
}
.panel-note { margin: 9px 0 0; color: var(--ink-muted); font-size: 12px; text-align: center; }
.spinner {
  display: inline-block;
  width: 17px;
  height: 17px;
  border: 2px solid rgba(255, 255, 255, .45);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .65s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.file-queue {
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius-md);
}
.file-queue__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 10px; }
.file-queue__head h2 { margin: 0; font-size: 14px; letter-spacing: 0; }
.file-queue__head h2 span { color: var(--ink-muted); font-family: "JetBrains Mono", monospace; }
.text-button { min-height: 36px; padding: 6px 8px; color: var(--error); background: transparent; border: 0; border-radius: 6px; font-size: 12px; font-weight: 600; cursor: pointer; }
.file-queue__list { display: grid; gap: 6px; }
.queue-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 7px 10px;
  background: var(--surface-soft);
  border-radius: var(--radius-sm);
  font-size: 13px;
}
.queue-item__icon { display: grid; width: 32px; height: 32px; place-items: center; color: var(--primary-strong); background: var(--primary-soft); border-radius: 6px; font-size: 18px; }
.queue-item__name { overflow: hidden; color: var(--ink); font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.queue-item__size { color: var(--ink-muted); font-family: "JetBrains Mono", monospace; font-size: 11px; font-variant-numeric: tabular-nums; }
.queue-item__status { color: var(--success); font-size: 11px; font-weight: 600; }

.results-section { margin-top: 24px; }
.strip { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.strip:empty { display: none; }
.item { padding: 12px; background: var(--surface); border: 1px solid var(--outline); border-radius: var(--radius-md); }
.item img { width: 100%; height: 140px; object-fit: cover; background: var(--surface-soft); border: 1px solid var(--outline); border-radius: var(--radius-sm); }
.item .name { margin: 10px 0 3px; overflow: hidden; color: var(--ink); font-size: 13px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.item .size { margin: 0; color: var(--ink-muted); font-family: "JetBrains Mono", monospace; font-size: 11px; font-variant-numeric: tabular-nums; line-height: 1.55; }
.item .size b { color: var(--success); }
.item a { display: block; margin-top: 10px; padding: 9px 12px; color: var(--primary-strong); background: var(--primary-soft); border-radius: var(--radius-sm); font-size: 12px; font-weight: 700; text-align: center; text-decoration: none; }
.process-error { grid-column: 1 / -1; margin: 0; padding: 12px 14px; color: var(--error); background: var(--error-soft); border-radius: var(--radius-sm); font-size: 13px; }

.tools-section, .article, .faq { margin-top: 64px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.section-heading h2, .article > h2, .faq > h2 { margin: 0; }
.section-heading p { margin: 5px 0 0; color: var(--ink-muted); font-size: 14px; }
.tool-groups { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; align-items: start; }
.tool-group { grid-column: span 3; min-width: 0; }
.tool-group:nth-child(2) { grid-column: span 5; }
.tool-group:nth-child(3), .tool-group:nth-child(4) { grid-column: span 2; }
.tool-group h3 { margin: 0 0 9px; padding: 0 4px; color: var(--ink-muted); font-size: 13px; font-weight: 600; }
.tool-link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 20px;
  align-items: center;
  gap: 10px;
  min-height: 58px;
  margin-bottom: 6px;
  padding: 8px 10px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms var(--ease-out);
}
.tool-link > .material-symbols-outlined:first-child { display: grid; width: 34px; height: 34px; place-items: center; color: var(--primary-strong); background: var(--primary-soft); border-radius: 7px; font-size: 19px; }
.tool-link b, .tool-link small { display: block; }
.tool-link b { font-size: 13px; font-weight: 600; }
.tool-link small { margin-top: 2px; overflow: hidden; color: var(--ink-muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.tool-link__arrow { color: var(--outline-strong); font-size: 18px; transition: transform 160ms var(--ease-out); }

.processing-info { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }
.processing-info article { display: flex; gap: 14px; padding: 20px; background: var(--surface); border: 1px solid var(--outline); border-radius: var(--radius-md); }
.processing-info article > .material-symbols-outlined { display: grid; width: 40px; height: 40px; flex: 0 0 auto; place-items: center; color: var(--primary-strong); background: var(--primary-soft); border-radius: var(--radius-sm); }
.processing-info h2 { margin: 0 0 5px; font-size: 16px; }
.processing-info p { max-width: 62ch; margin: 0; color: var(--ink-muted); font-size: 13px; line-height: 1.6; }

.article > p { max-width: 75ch; margin: 12px 0 0; color: var(--ink-muted); font-size: 15px; line-height: 1.7; }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px; }
.article-grid > div { padding: 18px; background: var(--surface); border: 1px solid var(--outline); border-radius: var(--radius-md); }
.article-grid h3 { margin: 0 0 7px; color: var(--primary-strong); font-size: 16px; }
.article-grid p { margin: 0; color: var(--ink-muted); font-size: 13px; line-height: 1.65; }
.faq { max-width: 900px; margin-right: auto; margin-left: auto; }
.faq > h2 { margin-bottom: 16px; }
.faq details { margin-bottom: 8px; background: var(--surface); border: 1px solid var(--outline); border-radius: var(--radius-sm); }
.faq summary { position: relative; min-height: 54px; padding: 16px 48px 16px 16px; color: var(--ink); border-radius: var(--radius-sm); list-style: none; font-size: 14px; font-weight: 600; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; top: 50%; right: 17px; color: var(--primary-strong); font-size: 20px; font-weight: 400; transform: translateY(-50%); }
.faq details[open] summary::after { content: "−"; }
.faq summary:focus-visible { outline: 3px solid rgba(37, 99, 235, .28); outline-offset: 2px; }
.faq details p { max-width: 75ch; margin: 0; padding: 0 16px 16px; color: var(--ink-muted); font-size: 13px; line-height: 1.65; }

.tool-page { width: min(1120px, 100%); padding-top: 28px; }
.tool-page .back-link { margin-bottom: 16px; }
.tool-page > h1 { margin-bottom: 24px; }
.tool-page > h1 + p { max-width: 75ch; }
.tool-lede { margin: -12px 0 24px; color: var(--ink-muted); font-size: 14px; line-height: 1.65; }
.back-link { display: inline-flex; min-height: 40px; align-items: center; color: var(--ink-muted); border-radius: 6px; font-size: 13px; font-weight: 600; text-decoration: none; transition: color 160ms ease; }
.back-link:hover { color: var(--primary-strong); }
.tool-page .panel { min-height: 330px; }
.tool-page .process-btn { margin-top: 8px; }
.result-box { margin-top: 24px; padding: 24px; background: var(--surface); border: 1px solid var(--outline); border-radius: var(--radius-md); text-align: center; }
.result-box img, .result-box video { width: auto; height: auto; max-height: 440px; border: 1px solid var(--outline); border-radius: var(--radius-sm); background: var(--surface-soft); }
.result-meta { margin: 12px 0; color: var(--ink-muted); font-family: "JetBrains Mono", monospace; font-size: 12px; font-variant-numeric: tabular-nums; }
.result-meta b { color: var(--success); }
.tool-error { margin-top: 14px; padding: 13px 15px; color: var(--error); background: var(--error-soft); border-radius: var(--radius-sm); font-size: 13px; }
.multi-thumbs { display: flex; flex-wrap: wrap; gap: 7px; margin: 8px 0 14px; }
.field--spaced { margin-top: 14px; }
.multi-thumbs img { width: 58px; height: 58px; object-fit: cover; border: 1px solid var(--outline); border-radius: 6px; }

.page-thumbs { display: flex; flex-direction: column; gap: 8px; margin: 8px 0 14px; }
.page-thumb { display: flex; align-items: center; gap: 8px; padding: 7px; background: var(--surface); border: 1px solid var(--outline); border-radius: var(--radius-sm); }
.page-thumb .thumb-frame { display: flex; width: 52px; height: 52px; flex-shrink: 0; align-items: center; justify-content: center; overflow: hidden; background: var(--surface-soft); border-radius: 6px; }
.page-thumb .thumb-frame img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.2); transition: transform 160ms var(--ease-out); }
.page-thumb .thumb-name { min-width: 0; flex: 1; overflow: hidden; color: var(--ink-muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.page-thumb .thumb-controls { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px; }
.page-thumb button { width: 32px; height: 32px; color: var(--ink-muted); background: var(--surface); border: 1px solid var(--outline); border-radius: 6px; cursor: pointer; }
.page-thumb button:disabled { cursor: not-allowed; opacity: .38; }
.page-thumb button.thumb-remove { color: var(--error); }

.site-footer { background: var(--surface); border-top: 1px solid var(--outline); }
.site-footer__inner { display: grid; grid-template-columns: 1.3fr .8fr 1fr; gap: 32px; width: min(1280px, 100%); margin: 0 auto; padding: 32px; }
.brand--footer { font-size: 15px; }
.brand--footer .brand__mark { width: 28px; height: 28px; }
.site-footer p { max-width: 50ch; margin: 10px 0 0; color: var(--ink-muted); font-size: 12px; line-height: 1.6; }
.site-footer nav { display: grid; align-content: start; gap: 8px; }
.site-footer nav a { color: var(--ink-muted); font-size: 13px; text-decoration: none; }
.site-footer__note { margin-top: 0 !important; }

@media (hover: hover) and (pointer: fine) {
  .header-action:hover { background: var(--surface-soft); border-color: var(--primary); }
  .header-action:active, .process-btn:active:not(:disabled), .download-btn:active, .tool-link:active { transform: scale(.98); }
  .process-btn:hover:not(:disabled), .download-btn:hover { background: var(--primary-strong); }
  .dropzone:hover { border-color: var(--primary); }
  .dropzone:hover .icon { transform: translateY(-2px); }
  .tool-link:hover { background: #f8f9ff; border-color: var(--primary); transform: translateY(-1px); }
  .tool-link:hover .tool-link__arrow { transform: translateX(2px); }
  .text-button:hover { background: var(--error-soft); }
  .page-thumb button:hover:not(:disabled) { color: var(--primary-strong); border-color: var(--primary); }
  .site-footer nav a:hover { color: var(--primary-strong); }
}

@media (max-width: 980px) {
  .primary-nav { display: none; }
  .workspace, .layout { grid-template-columns: 1fr; }
  .workspace__settings { position: static; }
  .tool-page .panel { min-height: auto; }
  .tool-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tool-group, .tool-group:nth-child(2), .tool-group:nth-child(3), .tool-group:nth-child(4) { grid-column: auto; }
  .article-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 72px; }
  .site-header__inner { min-height: 56px; padding: 0 16px; gap: 12px; }
  .brand { font-size: 14px; }
  .brand__mark { width: 28px; height: 28px; }
  .header-action { min-width: 40px; justify-content: center; padding: 8px; border: 0; }
  .header-action span:last-child { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  main { padding: 20px 16px 56px; }
  h1 { font-size: 26px; line-height: 1.25; }
  h2 { font-size: 20px; }
  .hero { margin-top: 0; padding: 16px 0 4px; }
  .hero p { max-width: 34ch; margin: 9px auto 14px; font-size: 15px; }
  .trust-badge { font-size: 11px; }
  .dropzone, .tool-page .dropzone { min-height: 220px; padding: 28px 16px; }
  .dropzone .icon { width: 52px; height: 52px; margin-bottom: 12px; }
  .dropzone .icon .material-symbols-outlined { font-size: 26px; }
  .dropzone p { font-size: 13px; }
  .dropzone p b { font-size: 15px; }
  .format-list { margin-top: 12px; }
  .panel { padding: 16px; }
  .panel h2 { margin-bottom: 18px; font-size: 16px; }
  .field-row { gap: 8px; }
  .queue-item { grid-template-columns: 32px minmax(0, 1fr) auto; }
  .queue-item__status { display: none; }
  .tools-section, .article, .faq { margin-top: 48px; }
  .tool-groups { display: block; }
  .tool-group { margin-bottom: 22px; }
  .processing-info { grid-template-columns: 1fr; margin-top: 36px; }
  .article-grid { grid-template-columns: 1fr; gap: 8px; }
  .section-heading { align-items: start; }
  .tool-page { padding-top: 18px; }
  .tool-page > h1 { margin-bottom: 18px; }
  .tool-page > h1 + p { margin-top: -8px !important; margin-bottom: 18px !important; }
  .page-thumb { align-items: flex-start; }
  .page-thumb .thumb-controls { max-width: 72px; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 22px; padding: 28px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}