*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Microsoft YaHei','PingFang SC',sans-serif;background:#f0f2f5;color:#333;line-height:1.6}
header{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.08);position:sticky;top:0;z-index:100}
.header-inner{max-width:960px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
header h1{font-size:20px;color:#1a73e8}
.header-nav{display:flex;gap:4px}
.nav-link{padding:6px 12px;font-size:12px;color:#666;text-decoration:none;border-radius:4px;transition:all .2s}
.nav-link:hover,.nav-link.active{background:#e8f0fe;color:#1a73e8}
.header-actions{display:flex;gap:8px;align-items:center}
.user-count{font-size:11px;color:#999;padding:4px 8px;background:#f0f2f5;border-radius:10px}
.user-status{font-size:12px;color:#666;padding:4px 8px;background:#f0f2f5;border-radius:10px}

main{max-width:960px;margin:20px auto;padding:0 16px}
.card{background:#fff;border-radius:8px;padding:20px;margin-bottom:16px;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.card h2{font-size:16px;margin-bottom:12px;color:#333;display:flex;align-items:center;gap:8px}
.hint{font-size:12px;color:#999;margin-bottom:8px}

/* 上传区域 */
.upload-area{border:2px dashed #d0d5dd;border-radius:8px;padding:40px 20px;text-align:center;cursor:pointer;transition:border-color .2s}
.upload-area:hover,.upload-area.drag-over{border-color:#1a73e8;background:#f8faff}
.upload-inner p{font-size:14px;color:#666;margin-top:8px}
.upload-icon{font-size:40px}
.upload-hint{font-size:12px!important;color:#999!important}
.upload-progress,.check-progress{margin-top:12px;display:flex;align-items:center;gap:12px}
.progress-bar{flex:1;height:6px;background:#e0e0e0;border-radius:3px;overflow:hidden}
.progress-fill{height:100%;background:#1a73e8;border-radius:3px;transition:width .3s;width:0}
.progress-text{font-size:12px;color:#666;white-space:nowrap}
.hidden{display:none!important}

/* 文档列表 */
.doc-list{max-height:300px;overflow-y:auto}
.doc-item{display:flex;align-items:center;padding:10px 12px;border-bottom:1px solid #f0f0f0;gap:12px}
.doc-item:last-child{border-bottom:none}
.doc-item .doc-icon{font-size:20px}
.doc-item .doc-info{flex:1;min-width:0}
.doc-item .doc-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.doc-item .doc-meta{font-size:11px;color:#999}
.btn-del{background:none;border:none;color:#ccc;font-size:16px;cursor:pointer;padding:4px 8px;border-radius:4px;transition:all .2s}
.btn-del:hover{color:#e53935;background:#fff5f5}
.doc-actions{margin-top:12px}

/* 参数 */
.param-grid{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:12px;align-items:center}
.param-item{display:flex;align-items:center;gap:6px}
.param-item label{font-size:13px;display:flex;align-items:center;gap:4px;cursor:pointer}
.param-item input[type=number]{width:70px;padding:6px 8px;border:1px solid #d0d5dd;border-radius:4px;font-size:13px;text-align:center}
.unit{font-size:12px;color:#999}

/* 按钮 */
.btn{padding:8px 16px;border:none;border-radius:4px;font-size:13px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:4px;transition:all .2s}
.btn-primary{background:#1a73e8;color:#fff}
.btn-primary:hover{background:#1669d0}
.btn-danger{background:#e53935;color:#fff}
.btn-danger:hover{background:#c62828}
.btn-outline{border:1px solid #d0d5dd;background:#fff;color:#333}
.btn-outline:hover{background:#f5f5f5}
.btn-sm{padding:4px 12px;font-size:11px}
.btn-large{width:100%;padding:12px;font-size:15px;justify-content:center;margin-top:8px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.badge{display:inline-block;background:#e8f0fe;color:#1a73e8;padding:2px 8px;border-radius:10px;font-size:12px;font-weight:500}

/* 结果 */
.summary{padding:16px;background:#f8faff;border-radius:8px;margin-bottom:16px}
.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.summary-item{text-align:center}
.summary-item .val{font-size:28px;font-weight:bold}
.summary-item .lbl{font-size:12px;color:#666;margin-top:4px}
.val.red{color:#e53935}
.val.green{color:#0f9d58}
.val.orange{color:#f9ab00}

.pair-card{border-left:4px solid #e0e0e0;padding:12px 16px;margin:8px 0;background:#fafafa;border-radius:0 4px 4px 0}
.pair-card.low{border-left-color:#0f9d58}
.pair-card.medium{border-left-color:#f9ab00}
.pair-card.high{border-left-color:#e53935}
.pair-card h3{font-size:14px;margin-bottom:4px}
.pair-card .pair-meta{font-size:12px;color:#666;margin:2px 0}
.pair-card .page-info{font-size:11px;color:#1a73e8}
.pair-card details{margin-top:8px}
.pair-card summary{font-size:12px;color:#1a73e8;cursor:pointer}
.pair-card .dup-item{padding:4px 8px;font-size:11px;color:#555;background:#fff;margin:2px 0;border-radius:3px;word-break:break-all}

.meta-item{border:1px solid #fff3cd;background:#fffdf5;padding:8px 12px;margin:4px 0;border-radius:4px;font-size:12px}
.multi-item{border:1px solid #f5c6cb;background:#fff5f5;padding:10px 12px;margin:6px 0;border-radius:4px;font-size:12px}
.multi-item blockquote{margin:6px 0;padding:6px 10px;background:#fff;border-left:3px solid #e53935;font-size:12px;color:#555;max-height:80px;overflow-y:auto;word-break:break-all}
.source{font-size:11px;color:#999}

.result-actions{margin-top:16px;display:flex;gap:8px}

/* 弹窗 */
.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:200}
.modal-content{background:#fff;border-radius:12px;padding:20px;text-align:center;max-width:380px;width:90%}
.modal-tabs{display:flex;gap:0;margin-bottom:12px;border-bottom:2px solid #e0e0e0}
.modal-tab{flex:1;padding:10px;border:none;background:none;font-size:14px;cursor:pointer;color:#666;border-bottom:3px solid transparent;margin-bottom:-2px;transition:all .2s}
.modal-tab.active{color:#1a73e8;border-bottom-color:#1a73e8;font-weight:bold}
.modal h3{font-size:18px;margin-bottom:8px}
.qr-container{margin:12px auto;border:1px solid #eee;display:inline-block;padding:8px;border-radius:8px}
.qr-container canvas{display:block}
.qr-status{font-size:12px;color:#666;margin:8px 0;line-height:1.6}
.qr-status .success{color:#0f9d58;font-weight:bold}
.qr-status .error{color:#e53935}
.qr-status .warn{color:#f9ab00}
.qr-tip{font-size:11px;color:#999;margin:4px 0}
.modal-footer{display:flex;gap:8px;justify-content:center;margin-top:8px}
.modal .btn-outline{margin-top:0}

/* 未登录锁定层 */
.locked{position:relative}
.lock-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.88);display:flex;align-items:center;justify-content:center;z-index:10;border-radius:8px;cursor:pointer}
.lock-msg{font-size:14px;color:#999;text-align:center}
.lock-msg .lock-link{color:#1a73e8;text-decoration:underline;cursor:pointer;font-weight:bold}
.lock-msg .lock-link:hover{color:#1669d0}

/* 响应式 */
@media(max-width:640px){
    .header-inner{flex-direction:column;text-align:center}
    .summary-grid{grid-template-columns:repeat(2,1fr)}
    .param-grid{flex-direction:column;align-items:stretch}
}