.home-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.home-card{display:flex;flex-direction:column;min-height:245px}.home-card h2{margin:10px 0 4px;font-size:25px}.home-card p:not(.section-kicker){color:var(--color-text-muted)}.home-card .button-link{margin-top:auto}.button-link{display:inline-flex;align-items:center;justify-content:center;align-self:flex-start;min-height:42px;padding:10px 16px;border-radius:9px;background:var(--color-primary);color:var(--color-on-primary);font-weight:700;text-decoration:none}.button-link:hover{background:var(--color-primary-hover)}.merge-list{display:grid;gap:12px;margin:18px 0}.merge-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;padding:16px;border:1px solid var(--color-border);border-radius:11px;background:var(--color-surface-muted)}.merge-item h3{margin:0;overflow-wrap:anywhere;font-size:16px}.merge-summary{margin:5px 0;color:var(--color-text-muted);font-size:13px}.merge-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:10px}.merge-fields label,.merge-output-grid label{display:grid;gap:5px;color:var(--color-text);font-size:13px;font-weight:700}.merge-actions{display:flex;align-items:start;gap:5px}.merge-actions button{min-width:40px;padding:8px}.merge-output-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.merge-error{color:var(--color-danger);font-size:13px}.output-card video{display:block;width:100%;max-height:420px;background:var(--color-bg)}.home-card:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-card-hover)}[hidden]{display:none!important}@media(max-width:760px){.home-grid{grid-template-columns:1fr}.merge-item{grid-template-columns:1fr}.merge-output-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:450px){.merge-fields,.merge-output-grid{grid-template-columns:1fr}}

#merge-output-result{scroll-margin-top:24px}

.merge-timeline{margin:18px 0;padding:16px;border:1px solid var(--color-border);border-radius:11px;background:var(--color-surface-muted)}.merge-timeline-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}.merge-timeline-heading h3{margin:0;font-size:16px}.merge-timeline-heading strong{color:var(--color-primary);font-size:13px}.merge-timeline canvas{display:block;width:100%;height:84px;margin:12px 0;border-radius:8px;background:var(--color-surface)}.merge-timeline-details{display:flex;gap:8px;overflow-x:auto;margin:0;padding:0;list-style:none}.merge-timeline-details li{flex:0 0 auto;max-width:230px;padding:5px 8px;border:1px solid var(--color-border);border-radius:6px;color:var(--color-text-muted);font-size:12px;overflow-wrap:anywhere}.merge-item.is-dragging{opacity:.55}.merge-item.drop-before{border-top:3px solid var(--color-primary)}.merge-item.drop-after{border-bottom:3px solid var(--color-primary)}.merge-drag-handle{cursor:grab}.merge-drag-handle:active{cursor:grabbing}@media(prefers-reduced-motion:reduce){.merge-item.is-dragging{transition:none}}

.merge-fps-control{display:grid;gap:6px}

:root[data-theme="dark"]{--color-cta-link:var(--color-link)}
.hero-card .button-link:link,.hero-card .button-link:visited,.home-card .button-link:link,.home-card .button-link:visited{color:var(--color-cta-link,#245BC5);text-decoration:none;font-size:inherit;font-weight:700}
.hero-card .button-link:hover,.hero-card .button-link:active,.home-card .button-link:hover,.home-card .button-link:active{color:var(--color-cta-link,#245BC5);text-decoration:none}



.hero-card .button-link,.home-card .button-link{background:transparent;border:1px solid transparent;color:var(--color-primary);transition:background-color 170ms ease,border-color 170ms ease,box-shadow 170ms ease,transform 170ms ease}
.hero-card .button-link:hover,.home-card .button-link:hover{background:color-mix(in srgb,var(--color-primary) 8%,transparent);border-color:color-mix(in srgb,var(--color-primary) 24%,transparent);box-shadow:var(--shadow-button);transform:translateY(-1px)}
.hero-card .button-link:active,.home-card .button-link:active{transform:translateY(0);box-shadow:none}
.hero-card .button-link:focus-visible,.home-card .button-link:focus-visible{outline:2px solid var(--color-focus);outline-offset:3px}

@media(prefers-reduced-motion:reduce){.hero-card .button-link,.home-card .button-link{transition:none}.hero-card .button-link:hover,.hero-card .button-link:active,.home-card .button-link:hover,.home-card .button-link:active{transform:none}}

.hero-card{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(260px,.75fr);align-items:center;gap:32px;padding:clamp(24px,4vw,48px);overflow:hidden;background:linear-gradient(120deg,var(--color-surface) 35%,color-mix(in srgb,var(--color-primary) 8%,var(--color-surface)));transition:box-shadow 180ms ease,transform 180ms ease}
.hero-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px)}
.hero-copy{min-width:0}.hero-copy h2{max-width:650px;margin:12px 0;font-size:clamp(28px,3.7vw,44px);line-height:1.18;letter-spacing:-.035em}.hero-description{max-width:650px;margin:0;color:var(--color-text-muted);font-size:clamp(15px,1.5vw,18px);line-height:1.65}.hero-features{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 26px;padding:0;list-style:none}.hero-features li{padding:7px 11px;border:1px solid var(--color-border);border-radius:999px;background:var(--color-surface);color:var(--color-text);font-size:12px;font-weight:650}.hero-actions{display:flex;flex-wrap:wrap;gap:10px}.hero-actions .button-link{min-height:44px;transition:background-color 170ms ease,border-color 170ms ease,color 170ms ease,box-shadow 170ms ease,transform 170ms ease}
.hero-visual{min-width:0;padding:18px;border:1px solid var(--color-border);border-radius:16px;background:var(--color-surface);box-shadow:var(--shadow-card)}.hero-preview{display:grid;place-items:center;min-height:170px;border-radius:10px;background:linear-gradient(145deg,color-mix(in srgb,var(--color-primary) 22%,var(--color-surface-muted)),var(--color-surface-muted))}.hero-play{width:54px;height:54px;border:1px solid var(--color-border);border-radius:50%;background:var(--color-surface);box-shadow:var(--shadow-card)}.hero-play:after{display:block;width:0;height:0;margin:17px 0 0 21px;border-top:10px solid transparent;border-bottom:10px solid transparent;border-left:15px solid var(--color-primary);content:""}.hero-ruler{display:flex;justify-content:space-between;margin:16px 2px 7px}.hero-ruler span{width:1px;height:6px;background:var(--color-border-strong)}.hero-track{position:relative;display:flex;gap:4px;height:37px}.hero-clip{display:block;border-radius:5px;background:var(--color-primary)}.hero-clip-a{flex:1.1}.hero-clip-b{flex:.7;background:var(--color-trim-range)}.hero-clip-c{flex:1.3}.hero-playhead{position:absolute;top:-8px;bottom:-6px;left:56%;width:2px;background:var(--color-playhead)}
@media(max-width:760px){.hero-card{grid-template-columns:1fr;gap:24px}.hero-visual{max-width:540px;width:100%}}@media(max-width:450px){.hero-card{padding:22px}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .button-link{width:100%}.hero-visual{padding:12px}.hero-preview{min-height:120px}}@media(prefers-reduced-motion:reduce){.hero-card,.hero-actions .button-link{transition:none}.hero-card:hover,.hero-actions .button-link:hover,.hero-actions .button-link:active{transform:none}}

@media(max-width:768px){
  .hero-card{grid-template-columns:minmax(0,1fr);gap:20px;padding:20px}
  .hero-copy h2{margin:8px 0 10px;font-size:28px;line-height:1.2}
  .hero-description{font-size:16px;line-height:1.6}
  .hero-features{gap:8px;margin:16px 0}
  .hero-features li{padding:6px 10px;font-size:14px;line-height:1.5}
  .hero-actions{gap:10px}
  .hero-actions .button-link,.home-card .button-link{min-height:44px;font-size:16px;line-height:1.4}
  .hero-visual{width:100%;max-width:540px}
  .home-grid{grid-template-columns:minmax(0,1fr);gap:16px;margin-top:16px}
  .home-grid>.card{margin-top:0}
  .home-card{min-height:0}
  .home-card h2{margin:8px 0 0;font-size:22px;line-height:1.3}
  .home-card p:not(.section-kicker){margin:8px 0 0}
  .home-card .button-link{margin-top:12px}
  .merge-list{gap:12px;margin:16px 0}
  .merge-item{grid-template-columns:minmax(0,1fr);gap:12px;min-width:0;padding:16px}
  .merge-item>div{min-width:0}
  .merge-item h3{font-size:18px;line-height:1.4}
  .merge-summary,.merge-error{font-size:14px;line-height:1.5}
  .merge-fields{gap:12px;margin-top:12px}
  .merge-output-grid{gap:12px}
  .merge-actions{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:stretch;gap:8px;width:100%}
  .merge-actions button{width:100%;min-width:0;min-height:44px;padding:6px 4px;font-size:16px;line-height:1.4;overflow-wrap:anywhere}
  .merge-timeline,.merge-fields,.merge-output-grid{min-width:0}
  .merge-timeline{margin:16px 0;padding:16px}
  .merge-timeline-heading h3{font-size:18px;line-height:1.4}
  .merge-timeline-heading strong,.merge-timeline-details li{font-size:14px;line-height:1.5}
  .merge-timeline-details{max-width:100%;overscroll-behavior-inline:contain}
  .merge-output-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .merge-list input,.merge-list select{min-width:0;width:100%}
  .merge-fields label,.merge-output-grid label{font-size:15px;line-height:1.4}
  .merge-fps-control{gap:8px}
  #plannedFilename{overflow-wrap:anywhere}
  .output-card video{display:block;width:100%;max-width:100%;height:auto}
  .action-card .action-bar #cancel{grid-column:1/-1}
}
@media(max-width:430px){
  .hero-card{gap:18px}
  .hero-copy h2{overflow-wrap:anywhere}
  .hero-actions{display:grid;grid-template-columns:minmax(0,1fr);gap:8px}
  .hero-actions .button-link{width:100%;min-height:44px}
  .hero-visual{padding:12px}
  .hero-preview{min-height:120px}
  .merge-fields,.merge-output-grid{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:360px){
  .merge-actions{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:320px){
  .hero-card{padding:16px}
}

.merge-transition-section{margin:0 0 18px;padding:16px;border:1px solid var(--color-border);border-radius:11px;background:var(--color-surface-muted)}.merge-transition-section summary{display:flex;align-items:center;justify-content:space-between;gap:10px;list-style:none;color:var(--color-text);font-weight:800;cursor:pointer}.merge-transition-section summary::-webkit-details-marker{display:none}.merge-transition-section summary::after{content:"⌄";color:var(--color-text-muted);font-size:18px;line-height:1;transform:rotate(-90deg)}.merge-transition-section[open] summary::after{transform:none}.merge-transition-section summary:hover{color:var(--color-primary)}.merge-transition-list{display:grid;gap:8px;margin:12px 0}.merge-transition-list button{width:100%;padding:10px;text-align:left;color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-border);overflow-wrap:anywhere}.merge-transition-list button.is-selected{outline:2px solid var(--color-focus)}.merge-transition-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.merge-transition-fields label{display:grid;gap:6px;color:var(--color-text);font-size:13px;font-weight:700}.merge-transition-fields select,.merge-transition-fields input{min-width:0;width:100%}.merge-transition-duration{display:grid;grid-template-columns:minmax(0,1fr) 90px;gap:10px;align-items:center}.merge-transition-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:12px}.merge-timeline-visual{position:relative}.merge-timeline-transitions{position:absolute;top:12px;right:0;bottom:12px;left:0;pointer-events:none}.merge-timeline-boundary{position:absolute;top:4px;bottom:4px;z-index:2;min-width:6px;padding:0;border:2px solid var(--color-primary);border-radius:4px;background:color-mix(in srgb,var(--color-primary) 45%,transparent);pointer-events:auto;cursor:pointer}.merge-timeline-boundary.is-direct{width:6px!important;background:var(--color-border-strong);border-color:var(--color-border-strong)}.merge-timeline-boundary.is-selected{border-color:var(--color-warning);background:color-mix(in srgb,var(--color-warning) 55%,transparent)}.merge-timeline-boundary:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}@media(max-width:760px){.merge-transition-fields{grid-template-columns:1fr}}

.merge-preview-section{margin-top:18px;padding-top:16px;border-top:1px solid var(--color-border)}.merge-preview-section h3{margin:0 0 10px;color:var(--color-text);font-size:15px}.merge-preview-frame{display:grid;place-items:center;min-height:120px;border:1px solid var(--color-border);border-radius:8px;background:#000;overflow:hidden}.merge-preview-frame canvas{display:block;width:auto;max-width:min(100%,640px);height:auto;max-height:360px;background:#000}.merge-preview-controls{display:grid;grid-template-columns:auto auto minmax(0,1fr) auto;align-items:center;gap:9px;margin-top:12px}.merge-preview-controls label{grid-column:1/-1;color:var(--color-text);font-size:13px;font-weight:700}.merge-preview-controls input[type=range]{grid-column:3;min-width:0;width:100%}.merge-preview-controls output{grid-column:4;color:var(--color-text-muted);font-size:12px;font-variant-numeric:tabular-nums;white-space:nowrap}.merge-preview-controls button:focus-visible,.merge-preview-controls input:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.merge-preview-section .field-help{margin:9px 0 0}@media(max-width:520px){.merge-preview-controls{grid-template-columns:repeat(2,minmax(0,1fr))}.merge-preview-controls input[type=range]{grid-column:1/-1}.merge-preview-controls output{grid-column:1/-1;text-align:right}}
.merge-output-tabs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:14px;border-bottom:1px solid var(--color-border);padding-bottom:8px}.merge-output-tabs button[aria-selected=true]{background:var(--color-primary);color:var(--color-on-primary)}.merge-output-tabs button[aria-selected=true]:hover:not(:disabled){background:var(--color-primary-hover);color:var(--color-on-primary)}.merge-output-panel[hidden]{display:none}.merge-output-panel .merge-output-grid{margin-top:0}.merge-output-standard-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.merge-output-custom-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:600px){.merge-output-standard-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:450px){.merge-output-standard-grid,.merge-output-custom-grid{grid-template-columns:1fr}}
.hero-card{align-items:stretch;gap:clamp(24px,4vw,40px);margin-top:0;padding:48px;border-top:0}.hero-copy{display:flex;flex-direction:column;justify-content:center}.hero-copy h2{max-width:620px;margin:12px 0 14px;font-size:clamp(30px,4vw,44px);line-height:1.2;text-wrap:balance}.hero-description{max-width:600px;line-height:1.6}.hero-features{gap:8px;margin:20px 0 22px}.hero-actions{gap:10px}.hero-actions .button-link{min-height:44px;padding:10px 18px;background:var(--color-surface);color:var(--color-primary);border-color:var(--color-border-strong)}.hero-actions .button-link:hover{background:var(--color-surface-muted);color:var(--color-primary);border-color:var(--color-primary);box-shadow:var(--shadow-button);transform:translateY(-1px)}.hero-actions .button-link:focus-visible{background:var(--color-surface-muted);color:var(--color-primary);border-color:var(--color-primary);outline:2px solid var(--color-focus);outline-offset:3px}.hero-actions .button-link:active{background:var(--color-surface-muted);color:var(--color-primary);border-color:var(--color-primary);box-shadow:none;transform:translateY(0)}.hero-visual{align-self:center;width:100%}.home-grid{gap:18px}.home-card{min-height:0;padding:22px}.home-card h2{margin:8px 0 6px}.home-card p:not(.section-kicker){margin:0;line-height:1.6}.home-card .button-link{margin-top:18px}@media(max-width:900px) and (min-width:761px){.hero-copy h2{font-size:clamp(30px,3.6vw,38px)}.hero-card{gap:24px;padding:28px}}@media(max-width:450px){.hero-card{gap:22px;padding:22px}.hero-copy h2{font-size:clamp(28px,9vw,34px);text-wrap:pretty}.hero-description{font-size:15px}.hero-actions{display:grid;grid-template-columns:1fr;gap:8px}.hero-actions .button-link{width:100%}.home-card{padding:20px}}
 .hero-title-line{display:block;white-space:nowrap}
@media(max-width:450px){.hero-copy h2{font-size:clamp(24px,8vw,34px)}}
.home-card .button-link{margin-top:auto;align-self:flex-end}