:root{color-scheme:dark;--bg:#0d1113;--panel:#151c1f;--panel2:#192225;--line:#2b373a;--text:#e2e8e8;--muted:#91a39b;--green:#c1f577;--warm:#e2b977;--blue:#86b8df}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:145px}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.75 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:var(--green);text-underline-offset:4px}button,input,select{font:inherit}button,a,input,summary{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--green);outline-offset:4px}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(28px,3.5vw,40px);line-height:1.3;letter-spacing:-1px;margin-bottom:10px}h2{font-size:23px;line-height:1.4;margin-bottom:13px}h3{font-size:16px;line-height:1.5;margin-bottom:9px}.muted,.lead,.small{color:var(--muted)}.small{font-size:12px}.eyebrow{font:11px 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var(--line);border-radius:6px}table{width:100%;border-collapse:collapse;font-size:13px;text-align:left}th{font-weight:500;background:#192522;color:#a9bc9a}th,td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}tr:last-child td{border-bottom:0}td.amount,th.amount{text-align:right;font-family:ui-monospace,monospace;white-space:nowrap}.breakdown tr:last-child td{color:var(--green);font-weight:700;background:#1a261f}.source-line{font-size:11px;color:#7f9486;margin-top:12px}.note-box{border-left:3px solid #7b9956;background:#19251f;padding:13px 16px;margin:15px 0;font-size:13px}.note-box.warm{border-color:#a88849;background:#25241b;color:#d6c59f}.note-box p:last-child{margin:0}.route-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.route-card{padding:20px;text-decoration:none;color:var(--text);display:block}.route-card b{color:var(--green);font:12px ui-monospace,monospace}.route-card h2{font-size:19px;margin:13px 0 9px}.route-card 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@media(max-width:900px){.route-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.instruction-grid{grid-template-columns:1fr}.plan{padding:16px}.plan .amount{font-size:28px}.plan .amount.range{font-size:22px}.two-col{grid-template-columns:1fr}.header-links{gap:10px}}
@media(max-width:600px){html{scroll-padding-top:135px}.header-main{padding:10px 14px}.brand{font-size:17px}.brand small{display:none}.header-links{font-size:10px}.route-nav{padding:0 12px 9px;gap:4px}.route-nav a{font-size:11px;gap:4px;padding:7px 5px;justify-content:center;min-height:36px}.route-nav a span{white-space:nowrap}.route-nav b{display:none}.wrap{padding:22px 12px 0}.page-head{margin:0 3px 18px}.page-head .badge{margin-top:10px}.head-line{display:block}h1{font-size:29px}.lead{font-size:12px}.eyebrow{font-size:10px}.plan-grid{grid-template-columns:1fr;gap:8px}.plan{padding:13px 15px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:2px 10px}.plan h2{font-size:13px;margin:0}.plan .amount,.plan .amount.range{font-size:25px;letter-spacing:-1.4px;grid-column:1/-1;grid-row:2;margin:2px 0 0}.plan .small{font-size:10px;margin:0;grid-column:1/-1}.plan .pending{font-size:11px;grid-column:1/-1;min-height:0;margin:0}.plan a{grid-column:2;grid-row:1;font-size:10px}.price-note{font-size:11px;margin:11px 2px 17px}.panel,.chapter{padding:17px 15px;margin:15px 0}.panel h2,h2{font-size:20px}.route-card{padding:16px 13px}.route-card h2{font-size:18px}.route-card p{font-size:11px}.field-grid{gap:12px}.field-grid label{font-size:11px}.summary-bar{padding:14px;margin:12px 0}.summary-bar strong{font-size:24px}.unpriced-list{grid-template-columns:1fr}.toc{gap:5px}.toc a{font-size:11px;padding:5px 8px}.shopping-table thead{display:none}.shopping-table,.shopping-table tbody,.shopping-table tr{display:block}.shopping-table tr{padding:13px 13px 10px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:5px 12px}.shopping-table tr:last-child{border-bottom:0}.shopping-table td{display:block;border:0;padding:0;min-width:0;font-size:12px}.shopping-table .item-name{grid-column:1/-1;min-width:0;margin-bottom:6px}.shopping-table .spec{font-size:11px}.shopping-table td[data-label]:before{content:attr(data-label) ' ';color:#738e7c;font:10px system-ui,sans-serif;margin-right:5px}.shopping-table td.amount{text-align:left}.shopping-table .buy{grid-column:2;grid-row:3;text-align:right}.shopping-table .buy a{display:inline-block;padding:5px 13px;background:#263820;border:1px solid #4b663b;border-radius:4px;font-size:12px}.chapter-head{gap:10px}.chapter-head h2{font-size:21px}.chapter-head .number{font-size:12px}.chapter li{font-size:13px}.needed,.done{font-size:11px}.model-card{display:block;padding:17px}.model-card .actions{margin-top:12px}.instruction-grid{gap:15px}.complete-grid{grid-template-columns:1fr}.page-next{padding:17px;display:block}.page-next .btn{margin-top:12px}.site-footer{display:block;font-size:10px}.site-footer>div:last-child{margin-top:8px}.address code{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.feature-photo,.instruction-grid img{height:auto}
.plan .amount.quote-needed{font:650 24px/1.4 Inter,"Microsoft YaHei",sans-serif;letter-spacing:0;color:var(--warm)}
@media(min-width:601px) and (max-width:900px){.plan-grid{grid-template-columns:1fr}.plan{display:grid;grid-template-columns:1fr auto;gap:3px 20px}.plan h2{grid-column:1;margin:0}.plan .amount{grid-column:2;grid-row:1/3;margin:0}.plan .pending,.plan .small{grid-column:1;margin-bottom:4px}.plan a{grid-column:2;text-align:right}}
@media(max-width:600px){.plan .amount.range{font-size:clamp(21px,6vw,25px)}}
@media print{body{background:white;color:black;font-size:11px}.site-header,.actions,.btn,.page-next,.toc,.site-footer{display:none}.wrap{max-width:none;padding:0}.panel,.chapter,.plan{background:white;border-color:#aaa;break-inside:avoid}.muted,.lead,.small,.spec{color:#333!important}a{color:#222}.print-only{display:block}.shopping-table tr{break-inside:avoid}}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.route-picker{margin:0 0 22px}.route-picker h2{font-size:18px}.board-choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;padding:0;margin:0;border:0}.board-choices label{display:flex;gap:9px;align-items:flex-start;cursor:pointer;padding:13px;border:1px solid var(--line);background:#111b1e;border-radius:6px}.board-choices label:has(input:checked){background:#24351f;border-color:#7b9d51}.board-choices input,.plan-choice input{accent-color:var(--green);width:16px;height:16px;flex:none;margin:4px 0 0}.board-choices span{font-weight:600;font-size:13px}.board-choices small{display:block;color:var(--muted);font-size:10px;font-weight:400;margin-top:3px}.plan-heading{font-size:18px;margin-bottom:12px}.plan-heading small{display:inline-block;font-size:11px;font-weight:400;color:var(--muted);margin-left:12px}.plan-choice{display:flex;gap:7px;align-items:flex-start;cursor:pointer}.plan{cursor:pointer}.plan:has(input:focus-visible){outline:2px solid var(--green);outline-offset:3px}.plan-choice input{margin-top:3px}.material-price{color:var(--green);font:600 19px/1.5 ui-monospace,monospace;margin-bottom:8px}
@media(max-width:600px){.board-choices{grid-template-columns:1fr}.board-choices label{padding:10px 12px}.board-choices span{font-size:12px}.board-choices small{display:inline;font-size:10px;margin-left:8px}.board-choices input{margin-top:3px}.plan-heading small{display:block;margin:4px 0 0}.route-picker{margin-bottom:18px}.plan .amount.range{white-space:normal;font-size:clamp(19px,5.6vw,25px)}}

@media(min-width:901px){.plan .amount.range{font-size:clamp(17px,1.6vw,22px);letter-spacing:-1px}}
.summary-bar strong{font-size:clamp(17px,4.7vw,24px);overflow-wrap:anywhere}
.edition-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:12px}.edition-head h2{margin:9px 0 0}.edition-price{text-align:right;flex:none}.edition-price small{display:block;color:var(--muted);font-size:11px}.edition-price strong{font:650 30px/1.4 ui-monospace,monospace;color:var(--green)}.printing-check{display:flex;align-items:center;gap:9px;padding:11px 13px;border:1px solid #4c6640;border-radius:5px;background:#1c2a21;margin:16px 0;font-size:13px;cursor:pointer}.printing-features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px}.printing-features article{padding:15px;border:1px solid var(--line);border-radius:5px;background:#121e1b}.printing-features h3{color:var(--green);font-size:14px;margin-bottom:7px}.printing-features p{color:var(--muted);font-size:12px;margin:0}
@media(max-width:900px){.printing-features{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.edition-head{align-items:flex-start;gap:10px}.edition-head h2{font-size:18px}.edition-price strong{font-size:24px}.edition-price small{font-size:10px}.printing-features{grid-template-columns:1fr;gap:8px}.printing-features article{padding:12px}.printing-check{font-size:12px}}