:root{color:#17251f;background:#f3f6f2;font-family:Microsoft YaHei,PingFang SC,Noto Sans SC,Arial,sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-width:320px;background:#f3f6f2}button,input{font:inherit}button{cursor:pointer}.app-shell{width:min(1440px,calc(100% - 48px));margin:0 auto;padding:28px 0 44px}.topbar{min-height:60px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #d7dfd8;padding-bottom:24px}.brand,.top-actions,.section-title,.result-header{display:flex;align-items:center}.brand{gap:12px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;color:#f1faf4;background:#0b5d4b}.brand strong{display:block;font-size:16px;line-height:1.25}.brand span:not(.brand-mark){display:block;color:#6c7973;font-size:12px;margin-top:4px}.top-actions{gap:10px}.icon-button,.export-button,.wide-export{border:0;border-radius:8px;min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:transform .16s ease,background .16s ease}.icon-button:active,.export-button:active,.wide-export:active{transform:translateY(1px)}.icon-button{width:42px;color:#315046;background:#e2eae4}.icon-button:hover{background:#d5e1d9}.export-button,.wide-export{padding:0 16px;color:#fff;background:#0b5d4b}.export-button:hover,.wide-export:hover{background:#084b3d}.export-button:disabled,.wide-export:disabled{cursor:wait;opacity:.72}.workspace-header{display:flex;justify-content:space-between;align-items:flex-end;padding:42px 0 26px;gap:24px}.eyebrow{margin:0 0 8px;color:#0b5d4b;font-size:12px;letter-spacing:.12em;font-weight:800}.project-name{max-width:680px;color:#17251f;background:transparent;border:0;border-bottom:2px solid transparent;outline:0;padding:0 0 4px;font-size:30px;font-weight:800;letter-spacing:0}.project-name:focus{border-bottom-color:#0b5d4b}.formula-note{max-width:370px;margin:0 0 3px;color:#68766f;font-size:14px;line-height:1.7}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid #d7dfd8;border-radius:10px;background:#fbfcfa;overflow:hidden}.summary-item{min-height:112px;padding:23px 25px;border-right:1px solid #d7dfd8}.summary-item:last-child{border-right:0}.summary-item span{display:block;color:#6b7972;font-size:13px;margin-bottom:12px}.summary-item strong{display:block;color:#17251f;font-family:Consolas,SFMono-Regular,monospace;font-size:25px;letter-spacing:0}.summary-item i,.result-row i,.total-result i{font-style:normal;font-family:Microsoft YaHei,sans-serif;font-size:12px;font-weight:500;margin-left:5px;color:currentColor;opacity:.72}.summary-item.total{color:#f2fbf5;background:#0b5d4b}.summary-item.total span,.summary-item.total strong{color:inherit}.calculator-layout{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:30px;align-items:start;margin-top:30px}.input-column{min-width:0}.section-heading{display:flex;justify-content:space-between;align-items:end;padding:4px 0 20px;border-bottom:1px solid #cdd8d0}.section-heading h1,.result-header h2,.section-title h2{margin:0;letter-spacing:0}.section-heading h1{font-size:21px}.section-heading>span{color:#718078;font-size:12px}.input-section{padding:27px 0 30px;border-bottom:1px solid #d7dfd8}.section-title{gap:11px;color:#0b5d4b;margin-bottom:20px}.section-title h2{color:#1b2c24;font-size:16px}.section-title p{margin:3px 0 0;color:#748179;font-size:12px}.input-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px 16px}.field{display:block;min-width:0}.field-label{display:block;color:#4d5e56;font-size:13px;font-weight:700;margin-bottom:8px}.field-control{display:flex;align-items:center;min-height:44px;background:#fff;border:1px solid #cbd6ce;border-radius:8px;transition:border-color .16s ease,box-shadow .16s ease}.field-control:focus-within{border-color:#0b5d4b;box-shadow:0 0 0 3px #0b5d4b1c}.field input{-webkit-appearance:textfield;-moz-appearance:textfield;appearance:textfield;width:100%;min-width:0;color:#1b2c24;border:0;outline:0;background:transparent;padding:0 0 0 12px;font-family:Consolas,SFMono-Regular,monospace;font-size:14px}.field input::-webkit-outer-spin-button,.field input::-webkit-inner-spin-button{-webkit-appearance:none;-moz-appearance:none;appearance:none;margin:0}.field-unit{flex:0 0 auto;padding:0 11px 0 6px;color:#748179;font-size:11px;white-space:nowrap}.field-hint{display:block;color:#718078;font-size:11px;margin-top:5px}.result-panel{position:sticky;top:20px;overflow:hidden;border:1px solid #cbd6ce;border-radius:10px;background:#fff;box-shadow:0 16px 38px #1f392e14}.result-header{justify-content:space-between;padding:25px 25px 22px;color:#0b5d4b;border-bottom:1px solid #d7dfd8}.result-header h2{color:#17251f;font-size:21px}.result-group{padding:22px 25px}.result-group+.result-group{border-top:1px solid #e1e7e2}.result-group-label{margin:0 0 12px;color:#66756d;font-size:12px;font-weight:800;letter-spacing:.08em}.result-row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;color:#66756d;font-size:13px}.result-row strong{flex:0 0 auto;color:#20352b;font-family:Consolas,SFMono-Regular,monospace;font-size:14px}.result-row.emphasis{margin-top:4px;padding-top:15px;border-top:1px solid #d9e1db;color:#244236;font-weight:700}.result-row.emphasis strong{color:#0b5d4b;font-size:17px}.cost-group{padding-bottom:0}.total-result{margin:16px -25px 0;padding:20px 25px;display:flex;justify-content:space-between;align-items:baseline;color:#eef8f1;background:#0b5d4b}.total-result span{font-size:14px;font-weight:700}.total-result strong{color:#fff;font-family:Consolas,SFMono-Regular,monospace;font-size:25px}.wide-export{width:calc(100% - 50px);margin:24px 25px 25px}.version-workspace{margin-top:34px;padding-top:30px;border-top:1px solid #cdd8d0}.version-header{display:flex;justify-content:space-between;align-items:flex-start;gap:24px}.version-header h2{margin:0;font-size:22px}.version-header>div>p:last-child{max-width:580px;margin:9px 0 0;color:#68766f;font-size:14px;line-height:1.65}.save-version,.compare-export{min-height:42px;border:0;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 16px;color:#fff;background:#0b5d4b;font-weight:700;white-space:nowrap;transition:transform .16s ease,background .16s ease}.save-version:hover,.compare-export:hover{background:#084b3d}.save-version:active,.compare-export:active{transform:translateY(1px)}.save-version:disabled,.compare-export:disabled{cursor:not-allowed;color:#90a097;background:#dce5de}.versions-empty{display:flex;align-items:center;gap:14px;margin-top:24px;padding:24px;border:1px dashed #bac9bf;border-radius:10px;color:#0b5d4b}.versions-empty strong,.versions-empty span{display:block}.versions-empty strong{color:#29473b;font-size:14px}.versions-empty span{color:#718078;font-size:13px;margin-top:5px}.version-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}.version-item{display:flex;min-width:0;border:1px solid #d2ddd5;border-radius:8px;background:#fff;overflow:hidden}.version-item.active{border-color:#0b5d4b;box-shadow:0 8px 22px #1745351a}.version-summary{flex:1;min-width:0;text-align:left;border:0;background:transparent;padding:16px}.version-summary:hover{background:#f5f9f5}.version-name,.version-time,.version-summary strong,.version-area{display:block}.version-name{color:#183228;font-size:14px;font-weight:800}.version-time{margin-top:5px;color:#718078;font-size:11px}.version-summary strong{margin-top:16px;color:#0b5d4b;font-family:Consolas,SFMono-Regular,monospace;font-size:19px}.version-summary i,.comparison-row i{font-style:normal;font-family:Microsoft YaHei,sans-serif;font-size:11px;font-weight:500;opacity:.72}.version-area{margin-top:5px;color:#52675c;font-family:Consolas,SFMono-Regular,monospace;font-size:12px}.version-actions{display:flex;flex:0 0 44px;flex-direction:column;border-left:1px solid #dce5de}.load-version,.delete-version{flex:1;border:0;color:#2f5547;background:#edf3ee;transition:background .16s ease,color .16s ease}.load-version:hover{color:#fff;background:#0b5d4b}.delete-version{color:#8d4d3e;border-top:1px solid #dce5de;background:#fbf2ef}.delete-version:hover{color:#fff;background:#a24730}.version-detail{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:14px;padding:14px 16px;color:#53695e;background:#e7efe8;border-radius:8px;font-size:12px}.version-detail span{color:#0b5d4b;font-weight:800}.version-detail strong{font-weight:600}.comparison-panel{margin-top:28px;padding:24px;border:1px solid #cbd6ce;border-radius:10px;background:#fff}.comparison-heading{display:flex;align-items:flex-start;gap:12px;color:#0b5d4b}.comparison-heading h3{color:#193027;margin:0;font-size:18px}.comparison-heading p{margin:5px 0 0;color:#718078;font-size:12px}.comparison-controls{display:grid;grid-template-columns:minmax(190px,.75fr) minmax(300px,1.5fr) auto;gap:14px;align-items:end;margin-top:22px}.comparison-controls>label>span,.compare-picker legend{display:block;margin-bottom:7px;color:#4d5e56;font-size:12px;font-weight:800}.comparison-controls select{width:100%;min-height:42px;padding:0 10px;color:#21372d;background:#fff;border:1px solid #cbd6ce;border-radius:8px;outline:0}.comparison-controls select:focus{border-color:#0b5d4b;box-shadow:0 0 0 3px #0b5d4b1c}.compare-picker{min-height:42px;margin:0;padding:0;border:0}.compare-picker>div{display:flex;flex-wrap:wrap;gap:7px;min-height:42px;padding:7px;border:1px solid #cbd6ce;border-radius:8px}.compare-picker label{display:inline-flex;align-items:center;gap:5px;color:#365448;font-size:12px}.compare-picker label.disabled{color:#9aa8a0}.compare-picker input{accent-color:#0b5d4b}.comparison-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}.comparison-card{border:1px solid #d7e0d9;border-radius:8px;overflow:hidden}.comparison-card h4{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin:0;padding:15px 16px;color:#1d372c;font-size:14px;background:#f2f7f3}.comparison-card h4 span{color:#718078;font-size:11px;font-weight:500}.comparison-row{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;align-items:center;gap:8px;padding:10px 16px;color:#53675d;font-size:12px}.comparison-row:nth-child(2n){background:#fbfdfb}.comparison-row strong{color:#243e32;text-align:right;font-family:Consolas,SFMono-Regular,monospace;font-size:12px}.comparison-row .increase{color:#a24730}.comparison-row .decrease{color:#0b5d4b}.comparison-empty{margin-top:22px;padding:22px;color:#718078;background:#f2f6f3;border-radius:8px;font-size:13px}@media (max-width: 1040px){.calculator-layout{grid-template-columns:1fr}.result-panel{position:static}.comparison-controls{grid-template-columns:1fr 1fr}.compare-export{grid-column:1 / -1}}@media (max-width: 780px){.app-shell{width:min(100% - 28px,680px);padding-top:16px}.topbar,.workspace-header{align-items:flex-start}.workspace-header{flex-direction:column;padding:30px 0 22px}.formula-note{max-width:none}.summary-grid{grid-template-columns:1fr 1fr}.summary-item:nth-child(2){border-right:0}.summary-item:nth-child(-n+2){border-bottom:1px solid #d7dfd8}.summary-item.total{border-color:#0b5d4b}.input-grid{grid-template-columns:1fr 1fr}.version-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 520px){.topbar{gap:14px}.brand strong{font-size:14px}.export-button{width:42px;padding:0;font-size:0}.export-button svg{width:20px;height:20px}.project-name{width:100%;font-size:24px}.summary-item{min-height:98px;padding:18px 15px}.summary-item strong{font-size:19px}.calculator-layout{margin-top:22px;gap:22px}.input-grid{grid-template-columns:1fr;gap:16px}.section-heading{align-items:flex-start;flex-direction:column;gap:8px}.version-header{flex-direction:column;gap:16px}.save-version{width:100%}.version-list,.comparison-cards,.comparison-controls{grid-template-columns:1fr}.compare-export{grid-column:auto;width:100%}.version-detail{display:grid;gap:8px}.comparison-panel{padding:18px 14px}.comparison-row{grid-template-columns:1.15fr 1fr 1fr 1fr;padding:10px;font-size:11px}.comparison-row strong{font-size:11px}}