:root{--bg-color: #0d0e12;--surface-color: #1a1c23;--accent-color: #6366f1;--accent-hover: #4f46e5;--text-main: #f8fafc;--text-dim: #94a3b8;--border-color: #334155;--glass: rgba(255, 255, 255, .03);--glass-border: rgba(255, 255, 255, .1);--success: #10b981}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-main);height:100vh;display:flex;flex-direction:column;overflow:hidden}header{height:64px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color);background:var(--surface-color);z-index:10}.fade-control,.pre-silence-control,.mono-toggle-control{display:flex;align-items:center;gap:8px}.mono-toggle-control{margin-right:12px}.mono-toggle-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:6px;color:var(--text-dim);cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);font-size:.75rem;font-weight:500}.mono-toggle-btn:hover{background:#ffffff14;border-color:#fff3;color:var(--text-main)}.mono-toggle-btn.active{background:#6366f126;border-color:#6366f14d;color:var(--accent-color)}.mono-toggle-btn.active:hover{background:#6366f140;border-color:#6366f180}.mono-toggle-label{font-size:.75rem;font-weight:500;min-width:40px}.pre-silence-control{margin-right:20px;flex:1;max-width:250px}.header-actions{display:flex;align-items:center;gap:12px}.logo{font-size:1.25rem;font-weight:700;background:linear-gradient(135deg,#818cf8,#6366f1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:flex;align-items:center;gap:8px}.logo svg{width:24px;height:24px;flex-shrink:0}@media(max-width:1205px){.logo{font-size:1rem;gap:6px}.logo svg{width:20px;height:20px}}@media(max-width:960px){.logo{font-size:.875rem;gap:5px}.logo svg{width:18px;height:18px}}.main-container{flex:1;display:flex;overflow:hidden;position:relative}sidebar{display:none}.editor-area{flex:1;padding:40px;overflow-y:auto;position:relative;transition:background-color .3s;display:flex;flex-direction:column;gap:16px;background:radial-gradient(circle at top right,#1e1b4b,var(--bg-color))}.editor-area.drag-active{background-color:#3b82f60d;outline:2px dashed var(--accent-color);outline-offset:-20px}.btn{padding:10px 16px;border-radius:8px;border:none;font-weight:600;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--accent-color);color:#fff}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #6366f14d}.btn-outline{background:#2a2d3a;border:1px solid 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var(--border-color);padding:16px;border-radius:12px}.steps-list li>strong{display:block;margin-bottom:6px;color:var(--text-main);font-size:1rem}.steps-list li p{font-size:.9rem;color:var(--text-dim);line-height:1.4}.helper-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.helper-grid ul{list-style:none;display:flex;flex-direction:column;gap:10px}.helper-grid ul li{color:var(--text-dim);font-size:.95rem;display:flex;gap:8px;line-height:1.4}.helper-grid ul li strong{color:var(--text-main);min-width:140px;flex-shrink:0}.faq-item{margin-bottom:12px}.faq-item:last-child{margin-bottom:0}.faq-item strong{display:block;color:var(--text-main);font-size:.95rem;margin-bottom:4px}.faq-item p{color:var(--text-dim);font-size:.9rem;line-height:1.4}@media(max-width:768px){.steps-list,.helper-grid{grid-template-columns:1fr}}.helper-footer{padding:32px;background:#0003;border-top:1px solid var(--border-color);text-align:center}.helper-footer 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var(--border-color);box-shadow:0 20px 50px #00000080;max-width:400px;width:90%;text-align:center;animation:modalPop .3s cubic-bezier(.34,1.56,.64,1)}.confirm-content h3{font-size:1.25rem;margin-bottom:12px;color:#fff}.confirm-content p{color:var(--text-dim);margin-bottom:24px;line-height:1.5}.confirm-actions{display:flex;gap:12px;justify-content:center}.confirm-actions .btn{flex:1}.btn-danger{background:#ef4444;color:#fff}.btn-danger:hover{background:#dc2626;box-shadow:0 4px 12px #ef44444d}@media(max-width:900px){header{flex-direction:column;gap:12px;padding:12px!important;height:auto!important}.branding-wrapper{width:100%;justify-content:space-between}.header-actions{width:100%;flex-wrap:wrap;gap:8px;justify-content:space-between}.header-actions .btn{flex:1 1 auto;padding:10px 12px;font-size:13px;justify-content:center;min-width:40px}.undo-redo-group{flex:1 1 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.trim-info{width:100%;text-align:center;margin-top:8px;opacity:.6;font-size:.8rem;font-style:italic}#export-btn,#preview-btn{width:100%;padding:14px}.steps-list,.helper-grid{grid-template-columns:1fr}}#limit-alert{position:absolute;top:0;left:0;width:100%;z-index:9;background:#fffbeb;color:#92400e;padding:12px;text-align:center;border-bottom:1px solid #fcd34d;box-shadow:0 4px 6px -1px #0000001a;transform:translateY(-100%);transition:transform .4s cubic-bezier(.16,1,.3,1)}#limit-alert.show{transform:translateY(0)}