:root{
  --bg:#fff;
  --surface:rgba(255,255,255,.76);
  --surface-strong:#fff;
  --text:#090909;
  --muted:#6a6a6a;
  --line:rgba(0,0,0,.10);
  --line-strong:rgba(0,0,0,.18);
  --soft:#f5f5f5;
  --soft-2:#efefef;
  --radius:24px;
  --shadow:0 18px 60px rgba(0,0,0,.07);
  --glass:blur(24px) saturate(140%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;-webkit-tap-highlight-color:transparent}
button,input,select{font:inherit}
button{color:inherit}
a{color:inherit}
.hidden{display:none!important}
.app-shell{min-height:100dvh}
.topbar{position:sticky;top:12px;z-index:100;margin:12px auto 0;width:min(1100px,calc(100% - 24px));height:64px;display:grid;grid-template-columns:64px 1fr 64px;align-items:center;padding:8px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.68);backdrop-filter:var(--glass);-webkit-backdrop-filter:var(--glass);box-shadow:0 10px 40px rgba(0,0,0,.05)}
.brand{text-align:center;font-size:21px;font-weight:850;letter-spacing:-.04em}
.topbar-spacer{width:100%}
.icon-btn{width:48px;height:48px;border:1px solid var(--line);border-radius:50%;background:#fff;display:grid;place-content:center;gap:4px;cursor:pointer;box-shadow:none}
.icon-btn span{display:block;width:17px;height:1.7px;background:#111;border-radius:99px}
.icon-btn:active{transform:scale(.97)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #111;outline-offset:3px}
.drawer{position:fixed;inset:12px auto 12px 12px;width:min(360px,calc(100% - 24px));z-index:200;border:1px solid var(--line);border-radius:30px;background:rgba(255,255,255,.92);backdrop-filter:var(--glass);-webkit-backdrop-filter:var(--glass);box-shadow:var(--shadow);padding:18px;transform:translateX(-115%);transition:transform .28s cubic-bezier(.2,.8,.2,1)}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:6px 4px 18px;border-bottom:1px solid var(--line)}
.drawer-head strong{font-size:20px;letter-spacing:-.03em}
.close-btn{width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:#fff;font-size:26px;line-height:1;cursor:pointer}
.drawer nav{display:grid;gap:8px;margin-top:14px}
.drawer nav button{padding:14px 15px;border:1px solid transparent;border-radius:16px;background:transparent;text-align:left;cursor:pointer;font-weight:700}
.drawer nav button:hover{background:var(--soft);border-color:var(--line)}
.drawer-note{margin:20px 2px 2px;color:var(--muted);font-size:13px;line-height:1.55}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.18);z-index:150}
main{width:min(1100px,calc(100% - 24px));margin:0 auto;padding:68px 0 40px}
.hero{padding:48px 8px 28px}
.eyebrow,.panel-kicker,.mode-kicker{font-size:11px;font-weight:850;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
h1{max-width:880px;margin:12px 0 16px;font-size:clamp(42px,7vw,84px);line-height:.98;letter-spacing:-.065em}
.hero-copy{max-width:720px;font-size:18px;line-height:1.6;color:#383838;margin:0}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero-tags span,.status-chip{padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.74);font-size:12px;font-weight:750}
.mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}
.mode-card{min-height:132px;border:1px solid var(--line);border-radius:24px;background:var(--soft);padding:22px;text-align:left;cursor:pointer;transition:transform .2s ease,border-color .2s ease,background .2s ease}
.mode-card strong{display:block;margin-top:8px;font-size:22px;letter-spacing:-.035em}
.mode-card small{display:block;margin-top:7px;color:var(--muted);line-height:1.45;font-size:14px}
.mode-card.active{background:#fff;border-color:#111;box-shadow:var(--shadow)}
.mode-card:hover{transform:translateY(-1px)}
.panel,.ad-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 14px 50px rgba(0,0,0,.04)}
.panel{padding:24px}
.ai-panel{margin-top:14px}
.panel-title-row{display:flex;gap:12px;align-items:flex-start;justify-content:space-between}
.panel h2{margin:4px 0 0;font-size:26px;letter-spacing:-.04em}
.ai-pool-copy{color:#444;line-height:1.55;max-width:820px}
.ai-engine-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:18px}
.ai-engine-card{min-height:108px;border:1px solid var(--line);background:#fff;border-radius:18px;padding:15px;text-align:left;cursor:pointer}
.ai-engine-card strong{display:block;font-size:14px;letter-spacing:-.015em}
.ai-engine-card span{display:block;margin-top:7px;color:var(--muted);font-size:12px;line-height:1.35}
.ai-engine-card em{display:inline-block;margin-top:13px;font-style:normal;font-size:11px;font-weight:850}
.ai-engine-card.active{border-color:#111;box-shadow:0 8px 30px rgba(0,0,0,.06)}
.ai-pool-note{margin-top:13px;padding:12px 14px;background:var(--soft);border-radius:14px;color:#555;font-size:13px;line-height:1.5}
.ai-limit-box{margin-top:14px;border:1px solid #111;border-radius:18px;padding:15px;display:grid;grid-template-columns:1fr auto;gap:7px 14px;align-items:center}
.ai-limit-box strong{font-size:14px}.ai-limit-box span{color:var(--muted);font-size:12px}.ai-limit-box button{grid-row:1/3;grid-column:2}
.creator-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:14px;margin-top:14px}
.dropzone{display:grid;place-items:center;text-align:center;min-height:300px;margin-top:18px;border:1.5px dashed var(--line-strong);border-radius:22px;background:linear-gradient(180deg,#fff,#fafafa);cursor:pointer;padding:30px}
.dropzone.dragging{border-color:#111;background:#f6f6f6}
.upload-icon{width:54px;height:54px;border:1px solid var(--line-strong);border-radius:17px;display:grid;place-items:center;font-size:25px;font-weight:700;margin-bottom:13px}
.dropzone strong{font-size:18px}.dropzone span{max-width:480px;color:var(--muted);font-size:13px;line-height:1.5;margin-top:7px}
.preview-editor{margin-top:18px}.preview-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.toolbar-title{font-size:13px;font-weight:800}
.tiny-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:800;cursor:pointer}
.editor-stage{position:relative;display:flex;justify-content:center;align-items:center;min-height:260px;overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#f4f4f4}
#imagePreview{display:block;max-width:100%;height:auto}.editor-stage video{display:block;width:100%;max-height:620px;background:#000}
.target-box{position:absolute;border:1.5px solid #111;pointer-events:none;box-shadow:0 0 0 9999px rgba(0,0,0,.06)}
.target-handle{position:absolute;width:16px;height:16px;border-radius:50%;background:#fff;border:1.5px solid #111;padding:0;pointer-events:auto;cursor:nwse-resize}.tl{left:-8px;top:-8px}.tr{right:-8px;top:-8px;cursor:nesw-resize}.bl{left:-8px;bottom:-8px;cursor:nesw-resize}.br{right:-8px;bottom:-8px}
.preview-meta{margin-top:10px;font-size:12px;color:#555;word-break:break-word}.helper-text{margin:7px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
.reference-wrap{margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.subsection-head{display:flex;justify-content:space-between;gap:10px;align-items:center}.subsection-head strong{font-size:14px}.subsection-head span{font-size:11px;color:var(--muted);font-weight:700}
.mini-upload{display:block;margin-top:10px;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;cursor:pointer;font-size:13px;font-weight:750}
.field{margin-top:16px}.field label{display:block;font-size:12px;font-weight:850;margin-bottom:8px}.field select,.field input[type="range"]{width:100%}
select{appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24'%3E%3Cpath d='m7 10 5 5 5-5' fill='none' stroke='%23111' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 13px center;border:1px solid var(--line-strong);border-radius:14px;padding:13px 39px 13px 13px;color:#111}
.range-field input{accent-color:#111}.range-label{display:flex;justify-content:space-between;gap:12px}.range-label output{font-size:12px;font-weight:800}
.option-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.ai-options{margin-top:4px;padding:15px;border:1px solid var(--line);border-radius:18px;background:#fafafa}
.toggle-field{display:flex;align-items:center;justify-content:space-between;gap:20px}.toggle-field>div{flex:1}.toggle-field label{margin:0}.toggle-field span{display:block;color:var(--muted);font-size:12px;line-height:1.4;margin-top:3px}.toggle-field input{width:21px;height:21px;accent-color:#111}
.quality-note{margin:14px 0 0;color:var(--muted);font-size:11px;line-height:1.5}.primary-btn,.secondary-btn{width:100%;border-radius:16px;padding:14px 16px;border:1px solid #111;cursor:pointer;font-weight:850;margin-top:16px}.primary-btn{background:#111;color:#fff}.secondary-btn{background:#fff;color:#111}.secondary-btn.full{margin-top:10px}.primary-btn:disabled,.secondary-btn:disabled{opacity:.42;cursor:not-allowed}
.progress-panel{margin-top:14px}.progress-track{height:10px;border-radius:999px;background:#ededed;overflow:hidden;margin-top:18px}.progress-bar{height:100%;width:0;background:#111;border-radius:999px;transition:width .18s ease}.progress-text{margin:10px 0 0;font-size:13px;color:#555}
.ad-card{margin-top:14px;padding:12px;min-height:90px}.ad-label{text-align:center;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#888;font-weight:800;margin-bottom:6px}
.result-panel{margin-top:14px}.result-panel video{display:block;width:100%;max-height:760px;background:#0a0a0a;border-radius:20px;margin-top:16px}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.result-actions .primary-btn,.result-actions .secondary-btn{margin-top:12px}.result-file,.result-meta{margin-top:12px;padding:12px 14px;border-radius:14px;background:var(--soft);font-size:12px;line-height:1.5;word-break:break-word}.result-file{font-weight:800}.share-panel{margin-top:14px;padding:15px;border:1px solid var(--line);border-radius:18px;background:#fafafa}.share-head{display:flex;justify-content:space-between;align-items:center}.share-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.share-btn{padding:12px 10px;background:#fff;border:1px solid var(--line);border-radius:13px;font-weight:750;cursor:pointer}.share-btn:hover{border-color:#111}
.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:14px}.info-card p{color:#4b4b4b;line-height:1.6;font-size:14px}.info-card a{font-weight:800}
.footer{width:min(1100px,calc(100% - 24px));margin:0 auto;padding:26px 0 46px;display:flex;justify-content:space-between;gap:18px;color:#777;font-size:12px;line-height:1.5}.footer a{font-weight:750}
@media (max-width:900px){.ai-engine-grid{grid-template-columns:repeat(2,1fr)}.creator-grid{grid-template-columns:1fr}.mode-switch{grid-template-columns:1fr}.hero{padding-top:28px}.hero-copy{font-size:16px}}
@media (max-width:620px){main{padding-top:44px}.topbar{top:8px;margin-top:8px}.hero{padding-left:2px;padding-right:2px}.panel{padding:18px}.panel h2{font-size:22px}.ai-engine-grid{grid-template-columns:1fr}.ai-limit-box{grid-template-columns:1fr}.ai-limit-box button{grid-row:auto;grid-column:auto}.option-grid,.result-actions{grid-template-columns:1fr}.share-grid{grid-template-columns:1fr 1fr}.footer{flex-direction:column}.dropzone{min-height:250px}h1{font-size:48px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}