.brand-mark {
  display: block;
  flex: 0 0 auto;
  width: var(--mark, 37px);
  height: var(--mark, 37px);
  background: url('/media/mark.svg') center / contain no-repeat;
}

.site-header .brand-mark { --mark: 42px; }
.footer .brand-mark { --mark: 32px; }
.sample-mark { width: 22px; height: 22px; border-radius: 5px; background: center / cover no-repeat; }
[data-demo="headphones"] .sample-mark { background-image: url('/media/headphones.jpg'); }
[data-demo="portrait"] .sample-mark { background-image: url('/media/portrait-320.webp'); }

.quality-home .topbar { background: var(--white); border-color: var(--line); }
.quality-home .topbar-inner { min-height: 66px; gap: clamp(10px, 3vw, 28px); }
.quality-home .topbar-inner nav { margin-inline-start: auto; gap: clamp(12px, 2.4vw, 26px); }
.quality-home .topbar-inner nav a { display: flex; align-items: center; min-height: 44px; white-space: nowrap; }
.quality-home .topbar-inner nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.quality-home .top-actions { flex: none; }
.quality-home main .intro {
  grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
  grid-template-rows: auto auto;
  gap: clamp(13px, 2.5vw, 26px) clamp(22px, 5vw, 64px);
  padding-block: clamp(24px, 4.9vw, 60px) clamp(24px, 4vw, 46px);
}

.quality-home .intro-copy { text-align: start; align-self: end; }
html[dir] .quality-home .intro h1 { font-size: clamp(2.4rem, 5vw, 4.55rem); line-height: 1.04; margin: 0 0 12px; letter-spacing: -.055em; }
html[lang="ar"] .quality-home .intro h1, html[lang="hi"] .quality-home .intro h1 { letter-spacing: normal; line-height: 1.25; }
.quality-home .intro h1 span { color: var(--muted); }
.quality-home .intro-copy > p { margin: 0; max-width: 48ch; font-size: clamp(.92rem, 1.4vw, 1.07rem); line-height: 1.65; }
.quality-home .intro .upload-card { align-self: start; padding: 9px; color: var(--ink); background: var(--white); border: 1px solid var(--line); border-radius: 23px; }
.quality-home .upload-card .drop-zone { min-height: 0; padding: 16px 12px 10px; gap: 8px; border-radius: 16px; border-color: #8e879580; background: var(--paper); }
.quality-home .upload-card .upload-button { color: #222913; background: #e2fa77; min-height: 53px; width: min(100%, 290px); font-size: 1.05rem; }
.quality-home .upload-button:hover:not(:disabled) { background: #d7f163; }
.quality-home .upload-formats, .quality-home .upload-formats span::before { color: var(--muted); }
.quality-home .upload-formats { font-size: .79rem; }
.quality-home .drop-instruction { color: var(--muted); font-size: .83rem; }
.quality-home .local-note { color: var(--ink); font-size: .82rem; font-weight: 720; }
.quality-home .upload-error { color: #a32920; }
.quality-home .upload-samples { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 5px 8px; color: var(--muted); font-size: .78rem; }
.quality-home .upload-samples button { min-height: 40px; padding-inline: 7px; font-size: .77rem; }
.quality-home .upload-more { width: 100%; border-block-start: 1px solid var(--line); text-align: start; }
.quality-home .upload-more > summary { min-height: 42px; padding: 8px 4px; align-content: center; cursor: pointer; color: var(--muted); font-size: .82rem; }
.quality-home .ultra-entry { border: 0; padding-block: 6px; }
.quality-home .ultra-entry p, .quality-home .ultra-entry small { color: var(--muted); min-height: 0; }
.quality-home .ultra-trigger { color: var(--ink); border-color: var(--line); }
.quality-home .ultra-trigger:hover:not(:disabled) { background: var(--white); }
.quality-home .v4-batch-settings { border-color: var(--line); margin-block: 7px; }
.quality-home .batch-upload-note { color: var(--muted); }
.quality-home .intro .hero-demo { max-width: 490px; padding: 7px; border-radius: 23px; border-color: var(--line); background: var(--white); }
.quality-home .demo-stage { aspect-ratio: 1.15; border-radius: 16px; }
.quality-home .hero-demo figcaption { gap: 9px; font-size: .77rem; line-height: 1.35; color: var(--muted); }
.quality-home .hero-demo label { min-height: 42px; }
.quality-home .studio { border-radius: 24px; }
.quality-home .v3-badge { display: none; }
.quality-home .studio-header { background: var(--white); }
.quality-home .info-grid { padding-block: 12px 24px; }
.quality-home .info-grid h2 { font-size: 1rem; }
.quality-home .info-grid p { font-size: .87rem; }
.quality-home .task-links { margin-block: 34px; }
.task-links h2 { font-size: clamp(1.35rem, 3vw, 2rem); line-height: 1.35; }
.task-links ul { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; list-style: none; margin: 12px 0 0; padding: 0; }
.task-links a { display: flex; align-items: center; min-height: 54px; padding: 8px 14px; background: var(--white); border: 1px solid var(--line); border-radius: 13px; font-weight: 730; }
.task-links a:hover { border-color: var(--muted); }

.reading-page.quality-guides { max-width: none; padding-block: 0; }
.quality-guides .site-header { min-height: 72px; }
.quality-catalog { max-width: 1100px; }
.quality-catalog > h1 { max-width: 20ch; font-size: clamp(2rem, 5vw, 3.85rem); letter-spacing: -.045em; line-height: 1.12; }
html[lang="ar"] .quality-catalog > h1, html[lang="hi"] .quality-catalog > h1 { letter-spacing: normal; line-height: 1.26; }
.quality-catalog > .reading-lead { max-width: 59ch; }
.catalog-controls { display: grid; gap: 12px; margin: 25px 0 8px; }
.catalog-search { display: grid; gap: 5px; max-width: 460px; font-size: .86rem; font-weight: 750; }
.catalog-search input { min-height: 46px; padding: 8px 12px; color: var(--ink); background: var(--white); border: 1px solid var(--line); border-radius: 10px; }
.catalog-filters { display: flex; flex-wrap: wrap; gap: 6px; }
.catalog-filters button { min-height: 44px; padding: 6px 11px; color: var(--ink); background: var(--white); border: 1px solid var(--line); border-radius: 9px; font-size: .81rem; }
.catalog-filters button[aria-pressed="true"] { background: #e2fa77; color: #222913; font-weight: 750; }
.catalog-section h2 { padding-block-end: 8px; border-block-end: 1px solid var(--line); }
.quality-catalog .guide-card { min-height: 144px; padding: clamp(14px, 2vw, 20px); background: var(--white); }
.quality-catalog .guide-card p { font-size: .88rem !important; line-height: 1.65; }
.quality-catalog .guide-card:hover { border-color: #92a24f; }
.catalog-empty { margin-block: 24px; }

.quality-reading { max-width: 890px; }
.quality-reading article { max-width: 70ch; margin-inline: auto; }
.quality-reading h1 { font-size: clamp(1.9rem, 4vw, 3.36rem); line-height: 1.15; margin-block: 17px 10px; }
.quality-reading .reading-lead { max-width: 67ch; margin-block: 12px 20px; }
.quality-reading article .reading-section { margin-block: 19px; }
.quality-reading article .reading-section h2 { margin-block-end: 8px; font-size: clamp(1.2rem, 2.5vw, 1.65rem); scroll-margin-top: 20px; }
.quality-reading .breadcrumbs { display: flex; flex-wrap: wrap; gap: 5px 11px; max-width: 70ch; margin-inline: auto; }
.quality-reading > .reading-section { max-width: 70ch; margin-inline: auto; }
.quality-reading a:not(.button) { text-decoration: underline; text-underline-offset: 4px; }
.quality-reading .article-toc { border: 1px solid var(--line); background: var(--white); border-radius: 13px; padding: 9px 13px; margin-block: 13px 21px; }
.quality-reading .article-toc summary { min-height: 37px; align-content: center; cursor: pointer; font-weight: 750; }
.quality-reading .article-toc ul { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 21px; padding-inline-start: 19px; }
.quality-reading .article-toc li { margin-block: 0; font-size: .88rem; }
.quality-reading .button-primary { min-height: 46px; text-align: center; }
.quality-reading .article-example { max-width: min(100%, 630px); margin-block: 13px 20px; }
.article-example .example-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.article-example img { display: block; width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); }
.article-example figcaption { font-size: .86rem; margin-block-start: 7px; color: var(--muted); }

@media (max-width: 720px) {
  .quality-home .topbar-inner { min-height: 58px; }
  .quality-home .topbar-inner nav { display: flex; justify-content: end; flex: 1; }
  .quality-home .topbar-inner nav a { display: none; }
  .quality-home .topbar-inner nav a[data-guide-library] { display: flex; font-size: .76rem; white-space: normal; }
  .quality-home main .intro { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto; gap: 13px; }
  .quality-home .intro-copy { text-align: center; }
  .quality-home .intro-copy > p { max-width: 41ch; margin-inline: auto; }
  html[dir] .quality-home .intro h1 { font-size: clamp(2.1rem, 8.6vw, 3.5rem); }
  .quality-home .intro .hero-demo { grid-column: 1; grid-row: 3; max-width: 406px; }
  .quality-home .demo-stage { aspect-ratio: 1.42; }
  .quality-home .upload-card .upload-button { width: min(100%, 315px); }
  .task-links ul, .quality-reading .article-toc ul { grid-template-columns: 1fr; }
}

@media (max-width: 335px) {
  .quality-home .topbar-inner { gap: 7px; }
  .quality-home .topbar .brand-mark { --mark: 27px; }
  .quality-home .topbar .brand-text { font-size: .96rem; }
}

@media (prefers-color-scheme: dark) {
  .quality-home .upload-error { color: #ffb9ae; }
  .quality-home .intro h1 span { color: #d6cce2; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .quality-home .upload-card, .quality-catalog .guide-card { transition: none; }
}