.fc-tool { max-width: 780px; margin: 2rem auto; font-family: inherit; }
.fc-upload-box { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .5rem; border: 2px dashed #c7c7d1; border-radius: 12px; padding: 3rem 1.5rem; cursor: pointer; transition: border-color .15s, background .15s; text-align: center; }
.fc-upload-box:hover { border-color: #4338CA; background: #EEF2FF; }
.fc-upload-box svg { color: #4338CA; }
.fc-upload-title { font-size: 1.15rem; font-weight: 700; }
.fc-upload-sub { font-size: .85rem; color: #666; max-width: 340px; line-height: 1.4; }
.fc-editor-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 720px) { .fc-editor-grid { grid-template-columns: 1fr 300px; } }
.fc-canvas-wrap { position: relative; background: #f2f2f5; border-radius: 12px; display: flex; align-items: center; justify-content: center; padding: 1.5rem 1rem 2.25rem; }
.fc-canvas { max-width: 100%; touch-action: none; cursor: grab; border-radius: 4px; box-shadow: 0 0 0 1px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06); background: #fff; }
.fc-canvas:active { cursor: grabbing; }
.fc-canvas-hint { position: absolute; bottom: 8px; left: 0; right: 0; text-align: center; font-size: .75rem; color: #888; }
.fc-controls { display: flex; flex-direction: column; gap: 1.1rem; }
.fc-field { display: flex; flex-direction: column; gap: .4rem; }
.fc-field label { font-size: .85rem; font-weight: 600; color: #222; }
.fc-field select { width: 100%; padding: .55rem .6rem; border-radius: 8px; border: 1px solid #d5d5db; font-size: .9rem; background: #fff; }
.fc-field input[type=range] { width: 100%; accent-color: #4338CA; }
.fc-bg-field label { font-weight: 500; display: flex; align-items: center; gap: .4rem; font-size: .88rem; }
.fc-bg-field input[type=checkbox] { accent-color: #4338CA; width: 16px; height: 16px; }
.fc-hint { font-size: .75rem; color: #777; line-height: 1.35; }
.fc-spec-box { background: #EEF2FF; border-radius: 8px; padding: .8rem 1rem; display: flex; flex-direction: column; gap: .2rem; border-left: 3px solid #4338CA; }
.fc-spec-box strong { font-size: 1.05rem; }
.fc-spec-box span { font-size: .8rem; color: #666; }
.fc-btn-primary, .fc-btn-secondary { border: none; border-radius: 8px; padding: .8rem 1rem; font-size: .95rem; font-weight: 700; cursor: pointer; transition: background .15s, transform .1s; }
.fc-btn-primary { background: #4338CA; color: #fff; }
.fc-btn-primary:hover { background: #372DA6; }
.fc-btn-primary:active { transform: scale(0.98); }
.fc-btn-secondary { background: transparent; color: #444; border: 1px solid #ccc; }
.fc-btn-secondary:hover { background: #f5f5f7; }