*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Microsoft YaHei',sans-serif;background:#f0f2f5;min-height:100vh;padding:20px}
.container{max-width:800px;margin:0 auto}
/* 右下角悬浮重置球，始终可见 */
.fab-reset{position:fixed;right:18px;bottom:18px;width:40px;height:40px;border-radius:50%;border:none;background:#e74c3c;color:#fff;font-size:1.1rem;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 3px 10px rgba(231,76,60,.4);z-index:9999;transition:transform .15s ease,background .15s ease}
.fab-reset:hover{background:#c0392b;transform:scale(1.08)}
.fab-reset:active{transform:scale(.94)}
h1{text-align:center;font-size:1.5rem;color:#2c3e50;padding:20px 0}
.card{background:#fff;border-radius:10px;padding:20px;margin-bottom:14px;box-shadow:0 1px 8px rgba(0,0,0,0.06)}
.card h2{font-size:1rem;color:#2c3e50;margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid #3498db}
.row{display:flex;flex-wrap:wrap;gap:10px}
.field{flex:1;min-width:100px}
.field label{display:block;font-size:0.78rem;color:#888;margin-bottom:3px}
.req::after{content:' *';color:#e74c3c;font-weight:700}
.field input,.field select{width:100%;padding:10px;border:1px solid #ddd;border-radius:6px;font-size:0.9rem;text-align:center;background:#fff}
.field input:focus,.field select:focus{outline:none;border-color:#3498db}
.check-group{display:flex;flex-wrap:wrap;gap:6px}
.check-group label{display:flex;align-items:center;gap:4px;padding:8px 14px;border:1px solid #ddd;border-radius:20px;font-size:0.85rem;cursor:pointer;background:#fafafa}
.check-group input{display:none}
.check-group label:has(input:checked){background:#e8f4fd;border-color:#3498db;color:#3498db}
.btn{display:block;width:100%;padding:14px;border:none;border-radius:8px;background:#3498db;color:#fff;font-size:1.1rem;cursor:pointer;margin-top:8px}
.btn:hover{background:#2980b9}
.btn-sm{padding:8px 18px;font-size:0.85rem;border-radius:6px;width:auto}
.result{background:linear-gradient(135deg,#2c3e50,#3498db);color:#fff;border-radius:10px;padding:30px;text-align:center;display:none}
.result .total{font-size:3rem;font-weight:700;margin:8px 0}
.result .unit{font-size:0.9rem;opacity:0.85}
.result .detail{font-size:0.8rem;opacity:0.75;margin-top:12px;line-height:1.8;text-align:left}
.overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);z-index:100;justify-content:center;align-items:center}
.overlay.show{display:flex}
.panel{background:#fff;border-radius:16px;padding:28px;max-width:700px;width:95%;max-height:85vh;overflow-y:auto}
.panel h3{font-size:1.1rem;margin-bottom:16px}
.set-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.set-card{background:#fafbfc;border:1px solid #e0e0e0;border-radius:10px;padding:14px}
.set-card h4{font-size:0.82rem;margin-bottom:10px;color:#2c3e50;font-weight:600}
.set-card .srow{display:flex;align-items:center;gap:6px;margin-bottom:5px}
.set-card .srow label{font-size:0.78rem;color:#444;min-width:52px;font-weight:500}
.set-card .srow input{width:72px;padding:7px 8px;border:1px solid #d0d0d0;border-radius:5px;font-size:0.82rem;text-align:right}
.set-card .srow .unit{font-size:0.72rem;color:#999;min-width:36px}
.set-card .srow span{font-size:0.72rem;color:#888;margin:0 2px}
.footer{text-align:center;color:#aaa;font-size:0.7rem;margin-top:20px}
.auto-tag{font-size:0.7rem;color:#3498db;margin-left:4px}

.help-tip{position:relative;cursor:help;color:#999;font-size:0.8rem;margin-left:4px}
.mode-tabs{display:flex;gap:0;margin-bottom:14px;border-radius:8px;overflow:hidden}
.mode-tab{flex:1;padding:12px;text-align:center;font-size:0.95rem;font-weight:600;cursor:pointer;border:none;background:#e8e8e8;color:#666;transition:all 0.2s;text-decoration:none;display:block}
.mode-tab.active{background:#3498db;color:#fff}
.help-tip:hover::after{content:attr(data-tip);position:absolute;left:0;top:24px;background:#333;color:#fff;padding:8px 12px;border-radius:6px;font-size:0.75rem;white-space:pre-line;line-height:1.6;z-index:999;min-width:220px;box-shadow:0 4px 12px rgba(0,0,0,0.2)}
.gtip{background:#2c3e50;color:#fff;padding:10px 14px;border-radius:8px;font-size:0.7rem;max-width:320px;line-height:1.7;box-shadow:0 4px 20px rgba(0,0,0,0.4);pointer-events:auto;text-align:left;z-index:99999}
.gtip hr{border-color:#555;margin:4px 0}
.tip-edit{margin-top:8px;text-align:right}
.tip-edit .action-btn{background:#2980b9;color:#fff;border:none;border-radius:5px;padding:5px 10px;font-size:0.7rem;cursor:pointer}
.tip-edit .action-btn:hover{background:#216a9a}

/* ===== 结果输出区样式 ===== */
.result-card{padding:0;overflow:hidden}
.result-header{background:linear-gradient(135deg,#2c3e50,#3498db);color:#fff;padding:24px 20px;text-align:center}
.result-header .rh-label{font-size:0.85rem;opacity:0.8;letter-spacing:1px}
.result-header .rh-total{font-size:2.8rem;font-weight:700;margin:6px 0;font-family:monospace}
.result-header .rh-sub{font-size:0.8rem;opacity:0.85}
.result-header .rh-tax{font-size:0.72rem;opacity:0.6;margin-top:4px}
.cost-chain{display:flex;padding:14px 16px;background:#f8f9fb;border-bottom:1px solid #eee;gap:4px;align-items:center}
.cost-chain .cc-item{flex:1;text-align:center}
.cost-chain .cc-label{font-size:0.7rem;color:#888}
.cost-chain .cc-val{font-size:1rem;font-weight:600;color:#2c3e50;font-family:monospace}
.cost-chain .cc-val.accent{font-size:1.1rem;font-weight:700;color:#e74c3c}
.cost-chain .cc-arrow{color:#bbb;font-size:1.2rem}
.cost-table{width:100%;border-collapse:collapse;font-size:0.8rem}
.cost-table th{padding:6px 8px;text-align:left;border-bottom:2px solid #3498db;background:#f0f2f5}
.cost-table th.num{text-align:right}
.cost-table td{padding:5px 8px;border-bottom:1px solid #f0f0f0}
.cost-table td.num{text-align:right;font-family:monospace}
.cost-table td.muted{color:#888;font-size:0.75rem}
.cost-table .cat-header td{padding:4px 8px;font-size:0.72rem;font-weight:600;border-bottom:1px solid #f0f0f0}
.cost-table .cat-header.cat-material{color:#27ae60;background:#f0faf0}
.cost-table .cat-header.cat-print{color:#e67e22;background:#fff8f0}
.cost-table .cat-header.cat-process{color:#8e44ad;background:#faf0ff}
.cost-table .cat-header.cat-other{color:#3498db;background:#f0f4ff}
.cost-table .total-row{background:#f8f9fb}
.cost-table .total-row td{padding:8px;font-weight:700}
.cost-table .total-row .total-val{color:#e74c3c;font-size:1rem;font-family:monospace}
.formula-toggle{border-top:1px solid #eee;padding:10px 16px;text-align:center;cursor:pointer;user-select:none}
.formula-toggle span{font-size:0.78rem;color:#3498db}
.formula-detail{display:none;padding:12px 16px;background:#f8f9fb;font-size:0.75rem;color:#555;line-height:2;border-top:1px solid #eee}

/* ===== 统计栏 ===== */
.stats-bar{display:flex;gap:0;margin-bottom:12px;border-radius:8px;overflow:hidden}
.stat-item{flex:1;padding:10px 8px;text-align:center;background:#f8f9fb;border-right:1px solid #e8e8e8}
.stat-item:last-child{border-right:none}
.stat-item .stat-num{font-size:1.2rem;font-weight:700;color:#3498db}
.stat-item .stat-label{font-size:0.7rem;color:#888;margin-top:2px}
.stat-item.accent .stat-num{color:#e67e22}

/* ===== 历史记录表 ===== */
.history-table{width:100%;border-collapse:collapse;font-size:0.8rem}
.history-table th{padding:8px;border-bottom:2px solid #3498db;text-align:left;background:#f0f2f5;white-space:nowrap}
.history-table td{padding:6px 8px;border-bottom:1px solid #eee}
.history-table tr:hover{background:#f8fbff}
.history-table .col-cb{width:30px;text-align:center}
.history-table .col-name{cursor:pointer}
.history-table .col-time{white-space:nowrap;font-size:0.75rem;color:#888}
.history-table .col-num{text-align:right;white-space:nowrap}
.history-table .col-action{text-align:center;white-space:nowrap}
.history-table .action-btn{background:#3498db;color:#fff;border:none;padding:3px 8px;border-radius:4px;cursor:pointer;font-size:0.72rem;margin:0 1px}
.history-table .action-btn:hover{opacity:0.85}
.history-table .action-btn.del{background:#e74c3c}
.history-table .action-btn.exp{background:#27ae60}
.cust-tag{display:inline-block;padding:1px 6px;border-radius:3px;font-size:0.72rem;font-weight:500}
.cust-tag.c1{background:#e8f5e9;color:#27ae60}
.cust-tag.c2{background:#e3f2fd;color:#2196f3}
.cust-tag.c3{background:#fff3e0;color:#e67e22}
.cust-tag.c4{background:#f3e5f5;color:#8e44ad}
.cust-tag.c5{background:#fce4ec;color:#c62828}
.cust-tag.c0{background:#f0f0f0;color:#999}
.no-result{text-align:center;color:#aaa;padding:20px;font-size:0.85rem}

/* ===== UI 优化：统一步进按钮 ===== */
.stepper{display:flex;align-items:stretch;height:40px}
.stepper button{flex:0 0 38px;border:1px solid #ddd;background:#f5f5f5;cursor:pointer;font-size:1.2rem;color:#555;display:flex;align-items:center;justify-content:center}
.stepper button:first-child{border-radius:6px 0 0 6px}
.stepper button:last-child{border-radius:0 6px 6px 0;border-left:none}
.stepper input{flex:1;min-width:0;text-align:center;border:1px solid #ddd;border-left:none;border-right:none;font-size:0.9rem}

/* ===== UI 优化：首屏结果占位卡 ===== */
.result-placeholder{background:linear-gradient(135deg,#f8f9fb,#eef2f7);border:2px dashed #cdd6e0;border-radius:10px;padding:48px 20px;text-align:center;color:#9aa7b5}
.result-placeholder .ph-icon{font-size:2.6rem;margin-bottom:10px}
.result-placeholder .ph-title{font-size:1rem;font-weight:600;color:#7a8a99;margin-bottom:6px}
.result-placeholder .ph-sub{font-size:0.8rem;color:#aab6c2}

/* ===== UI 优化：操作按钮主次 ===== */
.btn-copy{flex:1.4;padding:14px;border:none;border-radius:8px;background:#27ae60;color:#fff;font-size:1rem;font-weight:600;cursor:pointer}
.btn-secondary{flex:1;padding:12px;border:1.5px solid #8e44ad;background:#fff;color:#8e44ad;border-radius:8px;font-size:0.85rem;cursor:pointer}
.btn-secondary.blue{border-color:#2980b9;color:#2980b9}
.btn-secondary.gray{border-color:#7f8c8d;color:#7f8c8d}

  @media (max-width: 768px) {
    html{scroll-behavior:smooth;scroll-padding-top:20px}
    body{-webkit-overflow-scrolling:touch}
    .container{max-width:100%;padding:8px}
    .card{padding:10px;scroll-margin-top:20px}
    input[type=password],.field input,.field select,.panel input,.panel select{font-size:16px!important;padding:10px 8px}
    .mode-tab{font-size:0.85rem;padding:10px}
    h2{font-size:0.95rem}
    .btn{padding:12px;font-size:1rem}
    .set-grid{grid-template-columns:1fr}
    .set-card .srow input{width:60px}
    .overlay .panel{width:95%;max-height:90vh;overflow-y:auto}
    #actionBtns{flex-wrap:wrap}
    #actionBtns .btn{flex:1 1 45%!important;min-width:45%;font-size:0.85rem!important;padding:10px 8px!important}
    #multiQtyTable{overflow-x:auto;-webkit-overflow-scrolling:touch}
    .qb-textarea{font-size:0.8rem!important;min-height:200px}
    .cost-table td .desc{display:block;font-size:0.7rem;margin-top:2px}
  }
  .foot-update{text-align:center;color:#aaa;font-size:0.75rem;padding:14px 0 22px;margin-top:10px;border-top:1px solid #eee}

/* ===== 保存弹窗 ===== */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:10000;display:flex;align-items:center;justify-content:center}
.modal-card{width:340px;max-width:92vw;background:#fff;border-radius:10px;box-shadow:0 8px 30px rgba(0,0,0,.25);padding:18px 18px 14px;box-sizing:border-box}
.modal-title{font-size:1rem;font-weight:700;color:#222;margin-bottom:4px}
.modal-sub{font-size:0.72rem;color:#999;margin-bottom:12px;line-height:1.4}
.modal-form{display:flex;flex-direction:column;gap:9px}
.modal-row{display:flex;align-items:center;gap:8px}
.modal-row label{flex:0 0 64px;font-size:0.8rem;color:#555;text-align:right}
.modal-row input,.modal-row textarea{flex:1;min-width:0;box-sizing:border-box;padding:7px 9px;border:1.5px solid #ccc;border-radius:5px;font-size:0.85rem;font-family:inherit;line-height:1.4;resize:vertical}
.modal-row input:focus,.modal-row textarea:focus{outline:none;border-color:#2980b9}
.spec-group{display:flex;align-items:center;gap:6px;flex:1;min-width:0}
.spec-group input{flex:1;min-width:0;box-sizing:border-box;padding:7px 9px;border:1.5px solid #ccc;border-radius:5px;font-size:0.85rem;font-family:inherit;line-height:1.4}
.spec-group input:focus{outline:none;border-color:#2980b9}
.spec-x{flex:0 0 auto;color:#888;font-size:0.85rem}
.paper-group{display:flex;align-items:center;gap:6px;flex:1;min-width:0}
.gram-wrap{flex:1;min-width:0;display:flex;align-items:center;gap:3px;box-sizing:border-box;padding:7px 9px;border:1.5px solid #ccc;border-radius:5px;font-size:0.85rem;font-family:inherit;line-height:1.4}
.gram-wrap input{flex:1;min-width:0;border:none;outline:none;padding:0;font-size:0.85rem;font-family:inherit;background:transparent}
.gram-wrap input:focus{outline:none}
.gram-unit{flex:0 0 auto;color:#888;font-size:0.85rem}
.paper-group select{flex:1;min-width:0;box-sizing:border-box;padding:7px 9px;border:1.5px solid #ccc;border-radius:5px;font-size:0.85rem;font-family:inherit;line-height:1.4;background:#fff}
.paper-group select:focus{outline:none;border-color:#2980b9}
.flute-group{display:flex;align-items:center;gap:6px;flex:1;min-width:0}
.flute-group input[type=text]{flex:1;min-width:0;box-sizing:border-box;padding:7px 9px;border:1.5px solid #ccc;border-radius:5px;font-size:0.85rem;font-family:inherit;line-height:1.4}
.flute-group input[type=text]:focus{outline:none;border-color:#2980b9}
.flute-group select{flex:1;min-width:0;box-sizing:border-box;padding:7px 9px;border:1.5px solid #ccc;border-radius:5px;font-size:0.85rem;font-family:inherit;line-height:1.4;background:#fff}
.flute-group select:focus{outline:none;border-color:#2980b9}
.cross-label{flex:0 0 auto;display:flex;align-items:center;gap:3px;font-size:0.8rem;color:#555;white-space:nowrap;cursor:pointer}
.cross-label input[type=checkbox]{width:15px;height:15px;cursor:pointer}
.modal-actions{display:flex;gap:10px;margin-top:16px}
.modal-actions button{flex:1;padding:9px 0;border-radius:6px;font-size:0.88rem;font-weight:600;cursor:pointer;border:none}
.btn-cancel{background:#eee;color:#555}
.btn-cancel:hover{background:#e0e0e0}
.btn-confirm{background:#2980b9;color:#fff}
.btn-confirm:hover{background:#216a9a}
  .help-tip{position:relative;cursor:help;color:#999;font-size:0.8rem;margin-left:4px}
  .help-tip:hover::after{content:attr(data-tip);position:absolute;left:0;top:24px;background:#333;color:#fff;padding:8px 12px;border-radius:6px;font-size:0.75rem;white-space:pre-line;line-height:1.6;z-index:999;min-width:220px;box-shadow:0 4px 12px rgba(0,0,0,0.2)}