*{box-sizing:border-box}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;font-family:Helvetica Neue,Arial,Hiragino Sans,sans-serif}#root{width:100%}.app{color:#333;background:#f5f5f5;min-height:100vh;font-family:Helvetica Neue,Arial,Hiragino Sans,sans-serif}.app-header{color:#fff;background:#1a237e;padding:20px 32px}.app-header h1{margin:0;font-size:24px}.app-subtitle{opacity:.8;margin:4px 0 0;font-size:14px}.app-body{gap:24px;max-width:1200px;margin:0 auto;padding:24px;display:flex}@media (width<=768px){.app-body{flex-direction:column;padding:16px}}.sidebar{flex-shrink:0;width:280px}@media (width<=768px){.sidebar{width:100%}}.settings-panel{background:#fff;border-radius:12px;padding:20px;box-shadow:0 1px 4px #0000001a}.settings-panel h2{margin:0 0 16px;font-size:18px}.settings-panel label{color:#555;margin:12px 0 4px;font-size:13px;font-weight:600;display:block}.settings-panel select,.settings-panel input[type=text],.settings-panel input[type=number]{box-sizing:border-box;border:1px solid #ccc;border-radius:6px;width:100%;padding:8px 10px;font-size:14px}.settings-panel input[type=range]{width:100%}.color-options{align-items:center;gap:8px;display:flex}.color-btn{cursor:pointer;border:2px solid #0000;border-radius:50%;width:28px;height:28px;padding:0}.color-btn.active{border-color:#333;box-shadow:0 0 0 2px #fff,0 0 0 4px #333}.color-options input[type=color]{cursor:pointer;border:none;width:28px;height:28px;padding:0}.checkbox-group{flex-direction:column;gap:8px;margin-top:16px;display:flex}.checkbox-group label{cursor:pointer;align-items:center;gap:8px;margin:0;font-weight:400;display:flex}.checkbox-group input[type=checkbox]{accent-color:#1a237e;width:16px;height:16px}.main-area{flex:1;min-width:0}.drop-zone{cursor:pointer;background:#fff;border:2px dashed #aaa;border-radius:12px;transition:border-color .2s,background .2s}.drop-zone:hover{background:#e8eaf6;border-color:#1a237e}.drop-zone-inner{text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:40px 20px;display:flex}.drop-icon{margin-bottom:8px;font-size:48px}.drop-zone-inner p{color:#555;margin:4px 0;font-size:15px}.drop-hint{color:#999!important;font-size:13px!important}.file-list-header{color:#666;justify-content:space-between;align-items:center;margin:16px 0 8px;font-size:14px;display:flex}.file-list{flex-direction:column;gap:6px;display:flex}.file-card{background:#fff;border-radius:8px;align-items:center;gap:10px;padding:10px 14px;transition:box-shadow .15s;display:flex;box-shadow:0 1px 3px #00000014}.file-card:hover{box-shadow:0 2px 8px #00000026}.file-card--branch{background:#f8f9ff;border-left:3px solid #1a237e;margin-left:32px}.btn-branch-active{color:#1a237e!important;background:#e8eaf6!important}.drag-handle{cursor:grab;color:#aaa;-webkit-user-select:none;user-select:none;flex-shrink:0;font-size:16px}.evidence-label{color:#c62828;white-space:nowrap;min-width:80px;font-size:14px;font-weight:700}.file-name{text-overflow:ellipsis;white-space:nowrap;color:#444;cursor:pointer;border-radius:4px;flex:1;align-items:center;gap:4px;min-width:0;padding:2px 4px;font-size:14px;transition:background .15s;display:flex;overflow:hidden}.file-name:hover{background:#f0f0f0}.edit-icon{opacity:0;flex-shrink:0;transition:opacity .15s}.file-name:hover .edit-icon{opacity:.5}.file-name-input{color:#333;background:#fff;border:2px solid #1a237e;border-radius:4px;outline:none;flex:1;min-width:0;padding:4px 8px;font-size:14px}.file-actions{flex-shrink:0;gap:4px;display:flex}.btn-icon{cursor:pointer;color:#666;background:0 0;border:none;border-radius:4px;padding:4px 6px;font-size:18px;transition:background .15s}.btn-icon:hover{background:#eee}.btn-remove:hover{color:#c62828;background:#ffebee}.btn-text{color:#1a237e;cursor:pointer;background:0 0;border:none;font-size:13px;text-decoration:underline}.action-bar{justify-content:center;margin-top:16px;display:flex}.btn-primary{color:#fff;cursor:pointer;background:#1a237e;border:none;border-radius:8px;padding:14px 40px;font-size:16px;font-weight:600;transition:background .2s}.btn-primary:hover:not(:disabled){background:#283593}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.preview-overlay{z-index:1000;background:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.preview-content{background:#fff;border-radius:12px;flex-direction:column;width:80vw;height:85vh;padding:16px;display:flex}.preview-header{justify-content:space-between;align-items:center;margin-bottom:12px;font-weight:600;display:flex}.preview-loading{text-align:center;color:#999;padding:40px}.preview-iframe{border:none;border-radius:8px;flex:1;width:100%}