:root{font-family:Arial,"Noto Sans TC",sans-serif;color:#172b39;background:#f1f4f6;font-size:16px}*{box-sizing:border-box}body{margin:0}header{height:76px;padding:0 4%;display:flex;align-items:center;justify-content:space-between;background:white;border-bottom:1px solid #dbe1e5}.brand{font-size:24px;letter-spacing:2px;font-weight:800;color:#172b39;text-decoration:none}.brand span{font-size:14px;letter-spacing:1px;margin-left:16px;font-weight:400}.private{font-size:14px;color:#567065}main{max-width:1440px;margin:auto;padding:36px 4%}.heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}small,.step{font-size:13px;letter-spacing:1px;color:#637480}h1{font-size:32px;margin:10px 0}p{line-height:1.6}.heading p{margin:0;color:#60717c}.badge{font-size:13px;border:1px solid #cbd7de;padding:9px 13px;border-radius:30px}.workspace{display:grid;grid-template-columns:280px 1fr;border:1px solid #d1dce2;border-radius:12px;overflow:hidden;background:white}aside{padding:24px;border-right:1px solid #d1dce2}.step{margin:0 0 14px;font-weight:bold}.drop{display:flex;flex-direction:column;align-items:center;gap:10px;border:1px dashed #7e959f;padding:22px 8px;border-radius:8px;cursor:pointer;background:#f8fafb;text-align:center}.drop:hover,.drop.drag{background:#eff8e5;border-color:#518225}.drop span{font-size:14px}.drop .upload{font-size:30px;color:#314a5c}.drop small{font-size:12px}.secondary{width:100%;margin-top:10px;background:white}button,select{font:inherit;font-size:14px;border:1px solid #c7d2da;border-radius:6px;padding:10px 12px;cursor:pointer;color:#213b4d}button:hover{background:#e9f0e4}button:focus-visible,label:focus-visible,select:focus-visible{outline:3px solid #5b9328;outline-offset:3px}#filename{font-size:13px;color:#60717c;margin:14px 0 28px;overflow-wrap:anywhere}aside>label:not(.drop){display:block;font-size:14px;margin-bottom:8px}select{width:100%;background:white}.hint{font-size:13px;color:#6b7983;margin-bottom:24px}.layers{font-size:14px;color:#677883;max-height:130px;overflow:auto}.layers label{display:flex;gap:8px;padding:7px 0;overflow-wrap:anywhere}.layers input{accent-color:#527f2a}.drawing{min-width:0;background:#142431;color:#dce5e9;display:flex;flex-direction:column}.toolbar{display:flex;align-items:center;justify-content:space-between;padding:15px 22px;border-bottom:1px solid #30424f;font-size:14px}.toolbar button{background:transparent;border-color:#40525d;color:white;padding:7px 10px}.toolbar button:hover{background:#324855}#viewport{position:relative;min-height:450px;flex:1;overflow:hidden;background-image:linear-gradient(#ffffff05 1px,transparent 1px),linear-gradient(90deg,#ffffff05 1px,transparent 1px);background-size:24px 24px;touch-action:none}#preview{width:100%;height:100%;position:absolute;inset:0;cursor:grab}#empty{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;pointer-events:none;color:#8196a4;text-align:center;padding:24px}#empty span{font-size:24px;color:#bbcbd4}#empty p{font-size:14px}.legend{padding:14px 22px;display:flex;gap:20px;flex-wrap:wrap;font-size:12px;color:#a3b6c1;border-top:1px solid #30424f}.legend span:first-child{color:#b8f46b}.results{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;background:white;border:1px solid #d1dce2;border-radius:12px;margin-top:20px;overflow:hidden}.results>div{padding:26px;border-right:1px solid #e0e6e9;display:flex;flex-direction:column;gap:12px}.results>div:last-child{border:0}.results strong{font-size:28px;font-variant-numeric:tabular-nums}.results span{font-size:14px;color:#637480}.results .mainmetric{background:#e8f2df;gap:8px}.mainmetric strong{font-size:40px}.mainmetric p{font-size:14px;margin:0;color:#587043}.notes{margin-top:24px;padding:20px 24px;background:#fff;border-left:3px solid #879ba6;border-radius:4px}.notes h2{font-size:15px;margin:0 0 10px}.notes ul{padding-left:20px;margin:0;font-size:14px;color:#617481;line-height:1.9}footer{display:flex;justify-content:space-between;gap:20px;margin-top:30px;font-size:12px;color:#788893;line-height:1.6}@media(max-width:850px){.workspace{grid-template-columns:230px 1fr}aside{padding:16px}.results>div{padding:20px}.results strong{font-size:24px}.mainmetric strong{font-size:32px}.legend{gap:10px}}@media(max-width:620px){header{height:65px}.brand{font-size:20px}.brand span{display:none}.private{font-size:12px}main{padding:24px 16px}.heading{align-items:flex-start}.badge{font-size:11px;padding:7px;margin-top:5px}h1{font-size:26px}.heading p{font-size:14px}.workspace{grid-template-columns:1fr}aside{border-right:0}.drop{padding:14px}.drop .upload{display:none}#filename{margin-bottom:18px}.hint{margin-bottom:16px}.drawing{min-height:370px}#viewport{min-height:320px}.results{grid-template-columns:1fr 1fr}.results>div{border-bottom:1px solid #e0e6e9}.mainmetric strong{font-size:30px}footer{flex-direction:column;gap:6px}}

/* ---------- 材質 / 加工方式：置於「匯入圖面＋圖形預覽」大框上方 ---------- */
.options{display:flex;flex-wrap:wrap;align-items:flex-end;gap:18px 28px;background:white;border:1px solid #d1dce2;border-radius:12px;padding:16px 22px;margin-bottom:20px}
.options .field{display:flex;flex-direction:column;gap:8px;min-width:0}
.options label,.options .flabel{font-size:13px;font-weight:bold;letter-spacing:1px;color:#637480}
.options select{width:auto;min-width:190px;background:white}
.options .readout{font-size:14px;color:#213b4d;background:#f8fafb;border:1px dashed #c7d2da;border-radius:6px;padding:10px 12px;min-width:190px;font-variant-numeric:tabular-nums;cursor:default}
.heading:has(+.options){margin-bottom:18px}
@media(max-width:620px){.options{padding:14px;gap:14px}.options .field{width:100%}.options select{width:100%;min-width:0}}
/* 預覽報價單按鈕（沿用工具的綠色主色） */
.options .go{background:#5b9328;border-color:#4d7f22;color:#fff;font-weight:bold;padding:10px 20px}
.options .go:hover{background:#4d7f22}
/* 提醒視窗（防呆；與報價系統的 modal 同款式） */
.modal{position:fixed;inset:0;background:rgba(20,26,40,.45);display:none;align-items:center;justify-content:center;z-index:200;padding:24px}
.modal.on{display:flex}
.modal .box{background:#fff;border-radius:10px;max-width:560px;width:100%;max-height:86vh;overflow:auto;box-shadow:0 18px 50px rgba(15,20,40,.35)}
.modal .box>header{padding:12px 16px;border-bottom:1px solid #e1e7ec;display:flex;justify-content:space-between;align-items:center}
.modal .box>header h2{font-size:16px;margin:0}
.modal .box .body{padding:16px}
.noticeline{background:#eef0ff;border-left:3px solid #4f46e5;padding:7px 10px;border-radius:4px;font-size:14px;color:#2b2f6b;line-height:1.9}
.modal .box button{border:1px solid #c7d2da;background:white;color:#213b4d;font:inherit;font-size:14px;padding:6px 12px;border-radius:6px;cursor:pointer}
.modal .box button:hover{background:#eef2f6}