/* LocalVideoZip — cinema teal / film-strip motif; technical 6px radius */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"IBM Plex Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;
  background-image:
    linear-gradient(90deg,rgba(14,116,144,.07) 1px,transparent 1px),
    linear-gradient(rgba(14,116,144,.05) 1px,transparent 1px);
  background-size:48px 48px;
}
a{color:var(--primary)}
.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:10}
.site-header{background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:3px solid var(--primary);height:60px;position:sticky;top:0;z-index:5}
.header-inner,.main,.site-footer{max-width:820px;margin:0 auto;padding:0 16px}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.logo{font-weight:800;font-size:1.15rem;letter-spacing:-.02em;text-decoration:none;color:var(--primary);font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace}
.site-nav{display:flex;gap:14px;flex-wrap:wrap}.site-nav a{text-decoration:none;color:var(--text);font-size:.95rem}
.site-nav a:hover{color:var(--primary)}
.main{padding-top:28px;padding-bottom:48px}
.card{background:#fff;border:1px solid #a5f3fc;border-radius:6px;padding:20px;margin:0 0 20px;box-shadow:0 1px 0 rgba(8,51,68,.04)}
.hero{display:grid;gap:10px;margin-bottom:8px;padding:8px 0 4px;position:relative}
.hero::before{
  content:"";display:block;height:10px;border-radius:2px;
  background:repeating-linear-gradient(90deg,var(--text) 0 10px,transparent 10px 16px);
  opacity:.18;margin-bottom:6px;max-width:220px;
}
.hero h1{margin:0;font-size:clamp(1.75rem,4vw,2.35rem);letter-spacing:-.03em;line-height:1.15}
.lead{color:var(--muted);margin:.15rem 0 0;font-size:1.05rem;max-width:38rem}
.trust{color:var(--muted);font-size:.92rem;margin:.35rem 0 0;font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace}
.drop{border:2px dashed #67e8f9;border-radius:6px;padding:32px 16px;text-align:center;cursor:pointer;background:linear-gradient(180deg,#ecfeff,#fff)}
.drop.over,.drop:focus{border-color:var(--primary);outline:2px solid var(--primary);outline-offset:2px}
.drop p{margin:.35rem 0}.muted{color:var(--muted);font-size:.9rem}
.meta{margin:12px 0;font-size:.95rem;font-family:ui-monospace,Menlo,Consolas,monospace}
.presets{border:1px solid #a5f3fc;border-radius:6px;padding:12px;margin:12px 0;display:grid;gap:8px}
.presets legend{font-weight:700;padding:0 6px}
.presets label{display:flex;align-items:center;gap:8px;font-size:.95rem}
button,#run{background:var(--primary);color:#fff;border:0;border-radius:6px;padding:11px 16px;font:inherit;font-weight:700;cursor:pointer;letter-spacing:.01em}
button:hover,#run:hover{filter:brightness(1.05)}
button:disabled{opacity:.5;cursor:not-allowed}
.download{display:inline-block;margin-top:10px;font-weight:700;color:var(--accent)}
.status{min-height:1.4em;margin:10px 0;font-size:.95rem}
.prose h2{margin-top:0;letter-spacing:-.02em}
.prose ol,.prose ul{padding-left:1.2rem}
.prose code{font-size:.9em;background:#ecfeff;padding:.1em .35em;border-radius:3px}
.limits-list{margin:0;padding-left:1.2rem}
.sources{font-size:.92rem}.sources a{word-break:break-word}
.site-footer{color:var(--muted);font-size:.9rem;padding-bottom:32px;border-top:1px solid #a5f3fc;padding-top:16px;margin-top:8px}
.site-footer a{color:var(--muted)}
details{border-top:1px solid #e2e8f0;padding:10px 0}summary{cursor:pointer;font-weight:600}
.guide-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.guide-list a{font-weight:600;text-decoration:none}
.guide-list a:hover{text-decoration:underline}
@media (max-width:560px){
  .presets{grid-template-columns:1fr}
  .hero h1{font-size:1.65rem}
}