:root{--bg:#f8fafc;--surface:#fff;--border:#e2e8f0;--border-soft:#f1f5f9;--text:#0f172a;--text-2:#334155;--muted:#64748b;--faint:#94a3b8;--primary:#3b82f6;--primary-dark:#1d4ed8;--danger:#dc2626;--nav-bg:#0f172a;--nav-item:#cbd5e1;--nav-hover:#1e293b;--ghost:#22d3ee}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}button{font:inherit}a{color:inherit;text-decoration:none}.layout{min-height:100vh;display:flex}.sidebar{background:var(--nav-bg);flex-direction:column;flex-shrink:0;gap:4px;width:220px;height:100vh;padding:20px 14px;display:flex;position:sticky;top:0}.brand{color:#fff;padding:4px 10px 18px;font-size:17px;font-weight:700}.brand small{color:var(--faint);margin-top:2px;font-size:11px;font-weight:500;display:block}.nav-link{color:var(--nav-item);border-radius:8px;align-items:center;gap:10px;padding:9px 10px;font-size:14px;display:flex}.nav-link:hover{background:var(--nav-hover)}.nav-link.active{background:var(--primary);color:#fff}.sidebar-foot{color:var(--faint);word-break:break-all;margin-top:auto;padding:0 10px;font-size:11px;line-height:1.5}.feedback-link{cursor:pointer;text-align:left;background:0 0;border:none;margin-top:auto}.feedback-link+.sidebar-foot{margin-top:10px}.main{flex:1;min-width:0}.page-header{background:var(--surface);border-bottom:1px solid var(--border-soft);justify-content:space-between;align-items:center;gap:16px;padding:16px 28px;display:flex}.page-header h1{font-size:19px;font-weight:700}.page-header .back{color:var(--primary);margin-right:12px;font-size:14px}.page{max-width:1100px;padding:24px 28px}.label{text-transform:uppercase;letter-spacing:.07em;color:var(--faint);margin-bottom:10px;font-size:11px;font-weight:700}.card{background:var(--surface);border:1px solid var(--border);border-radius:14px}.card-tap{cursor:pointer;transition:transform .1s,box-shadow .1s}.card-tap:hover{transform:translateY(-1px);box-shadow:0 4px 16px #00000014}.stack{flex-direction:column;gap:10px;display:flex}.row{align-items:center;gap:10px;display:flex}.spread{justify-content:space-between;align-items:center;gap:12px;display:flex}.muted{color:var(--muted);font-size:13px}.error{color:var(--danger);white-space:pre-wrap;font-size:13px}.empty{color:var(--faint);text-align:center;padding:40px 0;font-size:14px}.btn{cursor:pointer;white-space:nowrap;border:none;border-radius:10px;padding:10px 18px;font-size:14px;font-weight:600;transition:opacity .15s}.btn:hover:not(:disabled){opacity:.85}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--primary);color:#fff}.btn-secondary{background:var(--border-soft);color:var(--text-2)}.btn-danger{color:var(--danger);background:#fee2e2}.btn-sm{border-radius:8px;padding:6px 12px;font-size:13px}.btn-block{width:100%;padding:14px}.input{border:1.5px solid var(--border);width:100%;color:var(--text-2);background:#fff;border-radius:10px;outline:none;padding:11px 14px;font-size:15px}.input:focus{border-color:var(--primary)}.pill{border-radius:99px;padding:3px 10px;font-size:11px;font-weight:600;display:inline-block}.pill-green{color:#15803d;background:#dcfce7}.pill-blue{color:var(--primary-dark);background:#dbeafe}.pill-amber{color:#92400e;background:#fef3c7}.pill-red{color:#b91c1c;background:#fee2e2}.pill-gray{background:var(--border-soft);color:var(--muted)}.list-item{padding:14px 16px}.hero{background:linear-gradient(135deg, #1e3a5f, var(--primary-dark));color:#fff;border-radius:16px;margin-bottom:24px;padding:22px 24px}.hero h2{margin-bottom:4px;font-size:20px}.hero p{color:#bfdbfe;margin-bottom:16px;font-size:14px}.hero .btn{color:var(--primary-dark);background:#fff}.progress{background:var(--border-soft);border-radius:4px;height:8px;overflow:hidden}.progress>div{background:var(--primary);height:100%;transition:width .2s}.dropzone{border:2px dashed var(--border);text-align:center;color:var(--muted);cursor:pointer;background:#fff;border-radius:14px;padding:36px}.dropzone.over{border-color:var(--primary);background:#eff6ff}.steps{flex-direction:column;gap:14px;margin:20px 0;display:flex}.step{color:var(--faint);align-items:center;gap:12px;font-size:15px;display:flex}.step .dot{border:2px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;font-size:13px;display:flex}.step.done{color:var(--text)}.step.done .dot{background:var(--primary);border-color:var(--primary);color:#fff}.step.active{color:var(--text);font-weight:600}.step.active .dot{border-color:var(--primary);animation:1.2s infinite pulse}.step.failed .dot{background:var(--danger);border-color:var(--danger);color:#fff}@keyframes pulse{50%{box-shadow:0 0 0 6px #3b82f633}}.compare{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:20px;display:grid}@media (width<=900px){.compare{grid-template-columns:1fr}}.viewer{background:#000;border-radius:14px;overflow:hidden}.stage{background:#000;justify-content:center;display:flex;position:relative}.stage video{max-width:100%;max-height:70vh;display:block}.stage .ghost-layer{pointer-events:none;margin:auto;position:absolute;inset:0}.stage-empty{color:var(--faint);text-align:center;padding:120px 20px;font-size:14px}.controls{color:#e2e8f0;background:#0f172a;flex-direction:column;gap:10px;padding:12px 14px;font-size:13px;display:flex}.controls input[type=range]{accent-color:var(--ghost);flex:1}.controls .btn{color:#e2e8f0;background:#1e293b}.seg{background:#1e293b;border-radius:8px;padding:2px;display:inline-flex}.seg button{color:var(--faint);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:4px 10px;font-size:12px}.seg button.on{background:var(--primary);color:#fff}.seg-sm button{padding:3px 8px;font-size:11px}.seg button:disabled{opacity:.4;cursor:default}.shot-card{align-items:center;gap:12px;padding:12px 14px;display:flex;position:relative}.shot-card .shot-delete{min-width:0;padding:3px 5px;font-size:11px;position:absolute;top:2px;right:2px}.shot-num{background:var(--border-soft);width:36px;height:36px;color:var(--text-2);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.shot-card.is-base{border-color:var(--primary)}.shot-card.is-ghost{border-color:var(--ghost)}.tag-base{background:var(--primary);color:#fff}.tag-ghost{background:var(--ghost);color:#083344}.btn-icon{min-width:30px;color:var(--muted);background:0 0;padding:6px 8px;font-size:16px;line-height:1}.btn-icon.is-fav{color:#f59e0b}.btn-icon-danger:hover{color:var(--danger)}.page-header h1{align-items:center;gap:4px;display:flex}.title-input{width:min(360px,60vw);padding:4px 8px;font-size:17px;font-weight:700}.backdrop{z-index:50;background:#0f172a80;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:#fff;border-radius:16px;width:100%;max-width:480px;max-height:80vh;padding:22px;overflow-y:auto}.modal h3{margin-bottom:14px;font-size:17px}.grid-clips{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;display:grid}.grid-clips video{aspect-ratio:9/16;object-fit:contain;background:#000;border-radius:10px 10px 0 0;width:100%;display:block}.modal-backdrop{z-index:10;background:#0f172a80;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{width:100%;max-width:480px;padding:22px}.modal h2{font-size:18px}.field{color:var(--text-2);flex-direction:column;gap:6px;font-size:14px;font-weight:600;display:flex}.field textarea{font:inherit;resize:vertical;font-weight:400}.auth-shell{flex-direction:column;justify-content:center;align-items:center;gap:18px;min-height:100vh;padding:24px 16px;display:flex}.auth-brand{color:var(--text);font-size:18px;font-weight:700}.auth-card{width:100%;max-width:380px;padding:24px}.auth-card h1{margin-bottom:4px;font-size:20px}.auth-or{text-align:center;color:var(--faint);margin:4px 0;font-size:12px}.auth-links{justify-content:space-between;gap:12px;display:flex}.auth-links button,.link-btn{color:var(--primary);cursor:pointer;background:0 0;border:none;padding:0;font-size:13px}.sidebar-foot .link-btn{color:var(--nav-item);font-size:11px}.auth-code{letter-spacing:.08em;text-align:center;font-family:monospace;font-size:18px}.notice{color:#15803d;font-size:13px}.landing{max-width:980px;margin:0 auto;padding:0 16px 48px}.landing-bar{justify-content:space-between;align-items:center;padding:18px 0;display:flex}.landing-brand{align-items:center;gap:10px;font-size:18px;font-weight:700;display:inline-flex}.landing-brand img{width:32px;height:32px}.landing-hero{background:linear-gradient(135deg, var(--nav-bg), var(--primary-dark));color:#fff;border-radius:18px;margin-bottom:28px;padding:48px 32px}.landing-hero h1{max-width:640px;margin-bottom:14px;font-size:clamp(26px,5vw,40px);line-height:1.15}.landing-hero p{color:#bfdbfe;max-width:600px;font-size:16px;line-height:1.6}.landing-cta{flex-wrap:wrap;margin-top:24px}.landing-cta .btn-primary{color:var(--primary-dark);background:#fff}.landing-btn-ghost{color:#fff;background:0 0;border:1px solid #ffffff80}.landing-section{margin-bottom:28px}.landing-section h2{margin-bottom:8px;font-size:18px}.landing-section p{line-height:1.6}.landing-steps{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;display:grid}.landing-step{padding:18px}.landing-step h3{margin:10px 0 6px;font-size:15px}.landing-step p{line-height:1.5}.landing-num{background:var(--primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;font-weight:700;display:inline-flex}.landing-split{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px;display:grid}.landing-tips{flex-direction:column;gap:8px;padding-left:18px;line-height:1.5;display:flex}.landing-note{padding:20px}@media (width<=600px){.landing-hero{padding:32px 20px}}a.btn{text-align:center;display:inline-block}.legal{max-width:760px;padding:28px;line-height:1.65}.legal h1{font-size:24px}.legal h2{margin:24px 0 6px;font-size:16px}.legal p,.legal li{color:var(--text-2);font-size:14px}.legal p+p{margin-top:10px}.legal ul{flex-direction:column;gap:6px;padding-left:20px;display:flex}.legal a,.auth-fine a{color:var(--primary)}.legal-footer{flex-wrap:wrap;gap:18px;padding:24px 0 0;display:flex}.legal-footer a:hover{color:var(--text)}.auth-fine{font-size:12px}@media (width<=600px){.legal{padding:20px 16px}}.legal ul+p{margin-top:10px}