.video-bg-remover-page {
  --vbr-bg: var(--page-bg);
  --vbr-surface: var(--panel);
  --vbr-soft: var(--panel-soft);
  --vbr-hover: var(--panel-hover);
  --vbr-border: var(--header-border);
  --vbr-text: var(--text-strong);
  --vbr-muted: var(--text-soft);
  --vbr-accent: var(--accent);
  --vbr-accent-strong: var(--accent-strong);
  --vbr-green: #22c55e;
  --vbr-danger: #ef4444;
  color: var(--vbr-text);
}

.video-bg-remover-page *,
.video-bg-remover-page *::before,
.video-bg-remover-page *::after { box-sizing: border-box; }

.video-bg-remover-page .vbr-wrap {
  min-height: 80vh;
  padding: 3rem 0 5rem;
  background:
    radial-gradient(circle at 15% 0%, color-mix(in srgb, var(--vbr-accent) 10%, transparent), transparent 35%),
    radial-gradient(circle at 90% 20%, rgba(56, 189, 248, .08), transparent 30%),
    var(--vbr-bg);
}

.video-bg-remover-page .vbr-inner { width: min(1160px, calc(100% - 2rem)); margin: 0 auto; }
.video-bg-remover-page .is-hidden { display: none !important; }

.video-bg-remover-page .vbr-heading { max-width: 850px; margin: 0 auto 2rem; text-align: center; }
.video-bg-remover-page .vbr-kicker,
.video-bg-remover-page .vbr-section-kicker { color: var(--vbr-accent); font-size: .74rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.video-bg-remover-page .vbr-heading h1 { margin: .55rem 0 .7rem; font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; line-height: 1.05; }
.video-bg-remover-page .vbr-heading h1 span { color: var(--vbr-accent); }
.video-bg-remover-page .vbr-heading > p { margin: 0 auto; max-width: 760px; color: var(--vbr-muted); font-size: 1rem; line-height: 1.7; }
.video-bg-remover-page .vbr-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem; margin-top: 1.1rem; }
.video-bg-remover-page .vbr-badges span { padding: .38rem .72rem; border: 1px solid color-mix(in srgb, var(--vbr-accent) 28%, var(--vbr-border)); border-radius: 999px; background: color-mix(in srgb, var(--vbr-accent) 7%, var(--vbr-soft)); color: var(--vbr-muted); font-size: .72rem; font-weight: 700; }

.video-bg-remover-page .vbr-notice { margin: 0 0 1.2rem; padding: .85rem 1rem; border-radius: .75rem; font-size: .84rem; line-height: 1.55; }
.video-bg-remover-page .vbr-notice-info { border: 1px solid color-mix(in srgb, #38bdf8 36%, var(--vbr-border)); background: color-mix(in srgb, #38bdf8 8%, var(--vbr-surface)); color: var(--vbr-muted); }
.video-bg-remover-page .vbr-notice-error { border-color: color-mix(in srgb, var(--vbr-danger) 45%, var(--vbr-border)); background: color-mix(in srgb, var(--vbr-danger) 9%, var(--vbr-surface)); color: var(--vbr-text); }

.video-bg-remover-page .vbr-card { padding: 1.3rem; border: 1px solid var(--vbr-border); border-radius: 1rem; background: var(--vbr-surface); box-shadow: 0 22px 55px rgba(0, 0, 0, .18); }
.video-bg-remover-page .vbr-drop-zone { display: grid; justify-items: center; width: 100%; padding: 3.4rem 1.2rem; border: 2px dashed color-mix(in srgb, var(--vbr-accent) 34%, var(--vbr-border)); border-radius: .85rem; background: color-mix(in srgb, var(--vbr-accent) 5%, var(--vbr-soft)); color: var(--vbr-text); cursor: pointer; transition: border-color .2s, background .2s, transform .2s; }
.video-bg-remover-page .vbr-drop-zone:hover,
.video-bg-remover-page .vbr-drop-zone.is-dragging { border-color: var(--vbr-accent); background: color-mix(in srgb, var(--vbr-accent) 11%, var(--vbr-soft)); transform: translateY(-1px); }
.video-bg-remover-page .vbr-drop-zone:focus-visible,
.video-bg-remover-page .vbr-btn:focus-visible,
.video-bg-remover-page select:focus-visible,
.video-bg-remover-page input:focus-visible { outline: 3px solid color-mix(in srgb, var(--vbr-accent) 48%, transparent); outline-offset: 3px; }
.video-bg-remover-page .vbr-drop-icon { display: grid; place-items: center; width: 66px; height: 66px; margin-bottom: .9rem; border-radius: 19px; background: linear-gradient(145deg, var(--vbr-accent), #38bdf8); color: #051015; font-weight: 900; letter-spacing: .06em; box-shadow: 0 12px 28px color-mix(in srgb, var(--vbr-accent) 24%, transparent); }
.video-bg-remover-page .vbr-drop-title { font-size: 1.15rem; font-weight: 800; }
.video-bg-remover-page .vbr-drop-sub { margin-top: .4rem; color: var(--vbr-muted); font-size: .78rem; }
.video-bg-remover-page .vbr-file-input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

.video-bg-remover-page .vbr-filebar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; padding: .75rem .9rem; border: 1px solid var(--vbr-border); border-radius: .65rem; background: var(--vbr-soft); }
.video-bg-remover-page .vbr-filebar > div { min-width: 0; }
.video-bg-remover-page .vbr-filebar strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.video-bg-remover-page .vbr-filebar span { display: block; margin-top: .15rem; color: var(--vbr-muted); font-size: .72rem; }

.video-bg-remover-page .vbr-preview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.video-bg-remover-page .vbr-preview-panel h2 { margin: 0 0 .55rem; color: var(--vbr-muted); font-size: .76rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.video-bg-remover-page .vbr-stage { position: relative; display: grid; place-items: center; min-height: 280px; overflow: hidden; border: 1px solid var(--vbr-border); border-radius: .8rem; }
.video-bg-remover-page .vbr-stage-dark { background: #05070a; }
.video-bg-remover-page .vbr-checkerboard { background-color: #d9dde2; background-image: linear-gradient(45deg, #bfc5cc 25%, transparent 25%), linear-gradient(-45deg, #bfc5cc 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #bfc5cc 75%), linear-gradient(-45deg, transparent 75%, #bfc5cc 75%); background-position: 0 0, 0 10px, 10px -10px, -10px 0; background-size: 20px 20px; }
.video-bg-remover-page .vbr-stage video,
.video-bg-remover-page .vbr-stage canvas { display: block; max-width: 100%; max-height: 420px; width: 100%; height: auto; object-fit: contain; }
.video-bg-remover-page .vbr-canvas-placeholder { position: absolute; inset: 0; display: grid; place-items: center; padding: 1rem; color: #374151; font-size: .82rem; font-weight: 700; text-align: center; }

.video-bg-remover-page .vbr-settings { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1.2rem; }
.video-bg-remover-page .vbr-mode-section { margin-top: 1.2rem; }
.video-bg-remover-page .vbr-mode-label { display: block; margin-bottom: .55rem; color: var(--vbr-text); font-size: .8rem; font-weight: 900; }
.video-bg-remover-page .vbr-mode-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .55rem; padding: .35rem; border: 1px solid var(--vbr-border); border-radius: .85rem; background: var(--vbr-soft); }
.video-bg-remover-page .vbr-mode-tab { display: flex; flex-direction: column; gap: .18rem; min-width: 0; padding: .8rem .75rem; border: 1px solid transparent; border-radius: .62rem; background: transparent; color: var(--vbr-muted); font: inherit; text-align: left; cursor: pointer; transition: border-color .2s, background .2s, color .2s; }
.video-bg-remover-page .vbr-mode-tab strong { font-size: .8rem; line-height: 1.3; }
.video-bg-remover-page .vbr-mode-tab small { overflow: hidden; font-size: .66rem; line-height: 1.35; text-overflow: ellipsis; }
.video-bg-remover-page .vbr-mode-tab:hover { color: var(--vbr-text); }
.video-bg-remover-page .vbr-mode-tab.is-active { border-color: color-mix(in srgb, var(--vbr-accent) 48%, var(--vbr-border)); background: color-mix(in srgb, var(--vbr-accent) 11%, var(--vbr-surface)); color: var(--vbr-text); box-shadow: 0 6px 18px color-mix(in srgb, var(--vbr-accent) 10%, transparent); }
.video-bg-remover-page .vbr-mode-tab.is-active strong { color: var(--vbr-accent); }
.video-bg-remover-page .vbr-mode-tab:focus-visible { outline: 3px solid color-mix(in srgb, var(--vbr-accent) 45%, transparent); outline-offset: 2px; }
.video-bg-remover-page .vbr-mode-help { margin: .65rem .2rem 0; color: var(--vbr-muted); font-size: .72rem; line-height: 1.55; }
.video-bg-remover-page .vbr-mode-help strong { color: var(--vbr-text); }
.video-bg-remover-page .vbr-field { display: flex; flex-direction: column; gap: .45rem; min-width: 0; padding: .9rem; border: 1px solid var(--vbr-border); border-radius: .7rem; background: var(--vbr-soft); }
.video-bg-remover-page .vbr-field > span { color: var(--vbr-text); font-size: .8rem; font-weight: 800; }
.video-bg-remover-page .vbr-field output { float: right; color: var(--vbr-accent); }
.video-bg-remover-page .vbr-field select { width: 100%; padding: .68rem .7rem; border: 1px solid var(--vbr-border); border-radius: .5rem; background: var(--vbr-surface); color: var(--vbr-text); font: inherit; font-size: .82rem; }
.video-bg-remover-page .vbr-field input[type="range"] { width: 100%; accent-color: var(--vbr-accent); }
.video-bg-remover-page .vbr-field small { color: var(--vbr-muted); font-size: .68rem; line-height: 1.45; }
.video-bg-remover-page .vbr-color-row { display: grid; grid-template-columns: 52px minmax(0, 1fr) minmax(0, 1fr); gap: .55rem; }
.video-bg-remover-page .vbr-color-row input[type="color"] { width: 52px; height: 40px; padding: 3px; border: 1px solid var(--vbr-border); border-radius: .48rem; background: var(--vbr-surface); cursor: pointer; }
.video-bg-remover-page .vbr-mini-btn { min-width: 0; padding: .55rem .65rem; border: 1px solid var(--vbr-border); border-radius: .48rem; background: var(--vbr-surface); color: var(--vbr-text); font: inherit; font-size: .72rem; font-weight: 800; cursor: pointer; }
.video-bg-remover-page .vbr-mini-btn:hover { border-color: var(--vbr-accent); }
.video-bg-remover-page .vbr-output-color-row { display: flex; align-items: center; gap: .7rem; }
.video-bg-remover-page .vbr-output-color-row input[type="color"] { width: 62px; height: 40px; padding: 3px; border: 1px solid var(--vbr-border); border-radius: .48rem; background: var(--vbr-surface); cursor: pointer; }
.video-bg-remover-page .vbr-output-color-row output { color: var(--vbr-accent); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .8rem; font-weight: 800; }

.video-bg-remover-page .vbr-actions { display: flex; justify-content: center; gap: .7rem; margin-top: 1.2rem; }
.video-bg-remover-page .vbr-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: .7rem 1.05rem; border: 1px solid transparent; border-radius: .58rem; font: inherit; font-size: .82rem; font-weight: 800; text-decoration: none !important; cursor: pointer; transition: transform .2s, filter .2s, background .2s; }
.video-bg-remover-page .vbr-btn:hover:not(:disabled) { transform: translateY(-1px); filter: brightness(1.08); }
.video-bg-remover-page .vbr-btn:disabled { cursor: not-allowed; opacity: .55; }
.video-bg-remover-page .vbr-btn-primary { min-width: 230px; background: linear-gradient(135deg, var(--vbr-accent), #38bdf8); color: #041014; }
.video-bg-remover-page .vbr-btn-ghost { border-color: var(--vbr-border); background: var(--vbr-surface); color: var(--vbr-muted); }
.video-bg-remover-page .vbr-btn-danger { border-color: color-mix(in srgb, var(--vbr-danger) 45%, var(--vbr-border)); background: color-mix(in srgb, var(--vbr-danger) 12%, var(--vbr-surface)); color: var(--vbr-danger); }
.video-bg-remover-page .vbr-btn-download { background: var(--vbr-green); color: #04130a !important; }

.video-bg-remover-page .vbr-progress-panel { margin-top: 1.15rem; padding: 1rem; border: 1px solid var(--vbr-border); border-radius: .7rem; background: var(--vbr-soft); }
.video-bg-remover-page .vbr-progress-head { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: .55rem; font-size: .8rem; }
.video-bg-remover-page .vbr-progress-head span { color: var(--vbr-accent); font-weight: 800; }
.video-bg-remover-page .vbr-progress-track { height: 10px; overflow: hidden; border-radius: 999px; background: var(--vbr-hover); }
.video-bg-remover-page .vbr-progress-bar { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--vbr-accent), #38bdf8); transition: width .15s linear; }
.video-bg-remover-page .vbr-progress-panel p { margin: .55rem 0 0; color: var(--vbr-muted); font-size: .7rem; line-height: 1.5; }

.video-bg-remover-page .vbr-result { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1.15rem; padding: 1rem; border: 1px solid color-mix(in srgb, var(--vbr-green) 42%, var(--vbr-border)); border-radius: .7rem; background: color-mix(in srgb, var(--vbr-green) 8%, var(--vbr-soft)); }
.video-bg-remover-page .vbr-result p { margin: .2rem 0 0; color: var(--vbr-muted); font-size: .74rem; }
.video-bg-remover-page .vbr-result .vbr-result-note { max-width: 700px; color: color-mix(in srgb, var(--vbr-text) 82%, var(--vbr-muted)); line-height: 1.5; }

.video-bg-remover-page .vbr-guide,
.video-bg-remover-page .vbr-faq { margin-top: 1.5rem; padding: 1.4rem; border: 1px solid var(--vbr-border); border-radius: 1rem; background: var(--vbr-surface); }
.video-bg-remover-page .vbr-guide { display: grid; grid-template-columns: minmax(220px, .8fr) 1.4fr; gap: 1.5rem; }
.video-bg-remover-page .vbr-guide h2,
.video-bg-remover-page .vbr-faq h2 { margin: .4rem 0 0; font-size: 1.35rem; }
.video-bg-remover-page .vbr-guide ol { display: grid; gap: .7rem; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.video-bg-remover-page .vbr-guide li { position: relative; display: grid; grid-template-columns: auto 1fr; column-gap: .75rem; padding: .75rem; border: 1px solid var(--vbr-border); border-radius: .65rem; background: var(--vbr-soft); counter-increment: steps; }
.video-bg-remover-page .vbr-guide li::before { content: counter(steps); grid-row: 1 / span 2; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--vbr-accent); color: #051015; font-size: .75rem; font-weight: 900; }
.video-bg-remover-page .vbr-guide li strong { font-size: .83rem; }
.video-bg-remover-page .vbr-guide li span { color: var(--vbr-muted); font-size: .72rem; line-height: 1.5; }
.video-bg-remover-page .vbr-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1.5rem; }
.video-bg-remover-page .vbr-info-grid article { padding: 1.1rem; border: 1px solid var(--vbr-border); border-radius: .8rem; background: var(--vbr-soft); }
.video-bg-remover-page .vbr-info-grid h2 { margin: 0 0 .45rem; font-size: .95rem; }
.video-bg-remover-page .vbr-info-grid p { margin: 0; color: var(--vbr-muted); font-size: .75rem; line-height: 1.65; }
.video-bg-remover-page .vbr-faq h2 { margin-bottom: 1rem; }
.video-bg-remover-page .vbr-faq details { border-top: 1px solid var(--vbr-border); }
.video-bg-remover-page .vbr-faq summary { padding: .9rem 0; font-size: .84rem; font-weight: 800; cursor: pointer; }
.video-bg-remover-page .vbr-faq details p { margin: -.25rem 0 1rem; color: var(--vbr-muted); font-size: .78rem; line-height: 1.65; }

@media (max-width: 820px) {
  .video-bg-remover-page .vbr-preview-grid,
  .video-bg-remover-page .vbr-settings,
  .video-bg-remover-page .vbr-info-grid { grid-template-columns: 1fr; }
  .video-bg-remover-page .vbr-guide { grid-template-columns: 1fr; }
  .video-bg-remover-page .vbr-mode-tabs { grid-template-columns: 1fr; }
  .video-bg-remover-page .vbr-mode-tab { text-align: center; }
  .video-bg-remover-page .vbr-stage { min-height: 220px; }
}

@media (max-width: 560px) {
  .video-bg-remover-page .vbr-wrap { padding-top: 2rem; }
  .video-bg-remover-page .vbr-inner { width: min(100% - 1rem, 1160px); }
  .video-bg-remover-page .vbr-card { padding: .75rem; }
  .video-bg-remover-page .vbr-filebar,
  .video-bg-remover-page .vbr-result { align-items: stretch; flex-direction: column; }
  .video-bg-remover-page .vbr-actions { flex-direction: column; }
  .video-bg-remover-page .vbr-actions .vbr-btn,
  .video-bg-remover-page .vbr-result .vbr-btn { width: 100%; }
  .video-bg-remover-page .vbr-drop-zone { padding: 2.5rem .8rem; }
  .video-bg-remover-page .vbr-drop-sub { max-width: 260px; line-height: 1.5; }
  .video-bg-remover-page .vbr-color-row { grid-template-columns: 52px 1fr; }
  .video-bg-remover-page .vbr-color-row .vbr-mini-btn:last-child { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  .video-bg-remover-page * { scroll-behavior: auto !important; transition: none !important; }
}