:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#25282b;background:#f4f5f7;font-size:16px;line-height:1.65;--red:#a71930;--line:#dde0e4}*{box-sizing:border-box}body{margin:0}a{color:inherit}header{max-width:1120px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:24px}.brand{display:flex;gap:14px;align-items:center;text-decoration:none;font-weight:600}.mark{display:grid;place-items:center;background:var(--red);color:white;width:58px;height:58px;font-size:22px;border-radius:6px}.brand small{display:block;font-size:11px;letter-spacing:1px;color:#61666b}.edition{font-size:13px;border:1px solid #c9cdd3;padding:4px 10px;border-radius:20px;color:#61666b}main{max-width:1072px;margin:auto}.notice{font-size:14px;background:#fff0d5;color:#735011;padding:12px 18px;border-left:3px solid #bd8929}.section{padding:38px 0 12px;scroll-margin-top:16px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;gap:16px}.eyebrow{font-size:12px;letter-spacing:1.8px;font-weight:700;color:var(--red);margin:0 0 8px}h1{font-size:32px;letter-spacing:-.5px;margin:0;line-height:1.4}h2{font-size:28px;margin:0;line-height:1.4}h3{font-size:18px;margin:0 0 18px}.intro{color:#62686d;max-width:490px;margin:14px 0;line-height:1.9}.text-link{font-size:14px;color:var(--red);text-decoration:none;white-space:nowrap}.product{display:grid;grid-template-columns:1fr 1fr;background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden}.product-summary{padding:36px;border-top:5px solid var(--red);background:linear-gradient(145deg,#fff 25%,#edf0f3)}.product-type{font-size:14px;color:var(--red);margin-bottom:16px;font-weight:600}.spec-line{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 32px}.spec-line span{font-size:14px;border:1px solid #cdd1d6;border-radius:4px;padding:4px 9px}.price-box{border-top:1px solid #cfd3d7;padding-top:22px}.price-box>span{font-size:14px;color:#555}.price{font-size:44px;color:var(--red);font-weight:700;letter-spacing:-1px;font-variant-numeric:tabular-nums;line-height:1.4}.price-box p,.source-note{font-size:13px;color:#656a70;margin:8px 0}.configuration{padding:32px}fieldset{border:0;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.sku-option{position:relative}.sku-option input{position:absolute;opacity:0;width:100%;height:100%;margin:0}.sku-option span{display:block;border:1px solid var(--line);border-radius:6px;padding:10px 8px;text-align:center;line-height:1.5;font-size:16px;font-weight:600}.sku-option small{display:block;font-size:12px;font-weight:400;color:#696f74}.sku-option input:checked+span{border:2px solid var(--red);padding:9px 7px;background:#fff4f5;color:var(--red)}.sku-option input:focus-visible+span{outline:3px solid #da8d9a;outline-offset:3px}.selection{padding:24px 0}.selection>span{font-size:13px;display:block;color:#73777c}.selection strong{display:block;font-size:18px}.selection p{font-size:14px;margin:4px 0;color:#656a70}button{font:inherit;cursor:pointer;min-height:48px;border-radius:6px;font-weight:600;padding:12px 16px}.primary{width:100%;background:var(--red);color:white;border:0}.primary:hover{background:#861126}.help{font-size:13px;color:#73777c;margin:10px 0}.details{background:#fff;border:1px solid var(--line);border-radius:8px;margin-top:16px;padding:16px 20px}.details summary{cursor:pointer;font-size:15px;font-weight:600}.details p{font-size:14px;color:#61666b}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;margin-top:14px;font-size:14px;text-align:left}th,td{padding:12px 10px;border-bottom:1px solid #e6e8ea;white-space:nowrap}th{font-size:13px;color:#60676d;font-weight:500}.original{font-size:12px;color:#6b7075;margin:14px 0}.original a{text-underline-offset:3px}.calculator{display:grid;grid-template-columns:1.4fr 1fr;background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden}.inputs{padding:32px}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}.field-grid label{font-size:14px;font-weight:500}.field-grid label span{display:block;font-size:12px;color:#747a80;font-weight:400}.field-grid input{display:block;width:100%;margin-top:7px;font:inherit;font-size:18px;color:#25282b;background:#f8f9fa;border:1px solid #cdd1d6;border-radius:5px;padding:10px 12px;min-height:48px}input:focus{outline:2px solid #a71930;outline-offset:2px}input[aria-invalid=true]{border-color:#a71930;background:#fff1f2}.subhead{margin-top:30px;border-top:1px solid var(--line);padding-top:26px}.results{padding:32px;background:#282c31;color:white}.results .eyebrow{color:#f2aab6}.big-result>span{font-size:16px;color:#e0e3e7}.big-result strong{display:block;font-size:66px;line-height:1.45;letter-spacing:-1px;font-variant-numeric:tabular-nums}.big-result small{font-size:20px;margin-left:10px;font-weight:400}.big-result p{font-size:14px;color:#c3c8ce;margin:0}.results dl{margin:28px 0 22px}.results dl div{display:flex;justify-content:space-between;gap:10px;padding:12px 0;border-bottom:1px solid #464b52;font-size:14px}.results dt{color:#c6cbd0}.results dd{margin:0;font-weight:600;font-variant-numeric:tabular-nums}.results .profit-row{padding:20px 0}.profit-row dd{font-size:22px}.result-note{font-size:13px;color:#bdc3ca;line-height:1.9}.secondary{background:transparent;border:1px solid #777f88;color:white;font-size:14px;width:100%;margin-top:12px}#calc-error{color:#ffb4c0;font-size:14px}#copy-status{color:var(--red);font-size:14px}textarea{width:100%;min-height:110px;font:inherit;font-size:14px;padding:10px;border:1px solid var(--line);border-radius:6px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}footer{max-width:1072px;margin:38px auto 80px;display:flex;justify-content:space-between;color:#787e84;font-size:12px;border-top:1px solid var(--line);padding-top:18px}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.97);border-top:1px solid var(--line);display:flex;justify-content:center;gap:50px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));z-index:10}.bottom-nav a{font-size:15px;text-decoration:none;font-weight:600;min-height:28px;color:var(--red)}@media(max-width:760px){header{padding:16px}.brand{gap:10px;font-size:14px}.brand small{font-size:9px;letter-spacing:.5px}.mark{width:46px;height:46px;font-size:19px}.edition{font-size:12px;padding:3px 8px}main{margin:0 16px}.notice{font-size:12px;padding:10px 12px}.section{padding-top:26px}.section-head{display:block;margin-bottom:18px}h1{font-size:26px}h2{font-size:25px}.text-link{display:inline-block;margin-top:12px}.product,.calculator{grid-template-columns:1fr}.product-summary,.configuration,.inputs,.results{padding:24px}.product-summary{padding-top:25px}.intro{font-size:15px}.spec-line{margin:16px 0 22px}.price{font-size:40px}.configuration{border-top:1px solid var(--line)}.field-grid{gap:16px 14px}.details{padding:14px}.big-result strong{font-size:56px}footer{margin:30px 16px 95px;gap:16px}.original{line-height:1.8}}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

.product-image{display:block;width:100%;max-width:400px;height:auto;margin:20px auto;border-radius:8px}.configuration{align-self:start;position:sticky;top:20px}.product{overflow:visible}.product-summary{border-radius:10px 0 0 10px}@media(max-width:760px){.product-image{max-width:340px}.configuration{position:static}.product-summary{border-radius:10px 10px 0 0}}

.product-tabs{display:flex;gap:10px;margin-bottom:16px}.product-tabs button{background:white;border:1px solid var(--line);color:#43494f;text-align:left;flex:1;max-width:250px}.product-tabs button[aria-pressed=true]{border-color:var(--red);background:var(--red);color:white}.product-tabs small{font-weight:400;margin-left:8px;font-size:12px}.warning{color:#8f431c!important;font-size:14px!important}#steam-label{font-size:14px}#steam-select{display:block;width:100%;font:inherit;font-size:16px;margin-top:10px;padding:12px 8px;border:1px solid #acb1b8;border-radius:6px;background:white;color:#292d32;min-height:48px}#steam-select:focus{outline:2px solid var(--red)}[hidden]{display:none!important}.bottom-nav a{display:grid;place-items:center;min-height:36px}@media(max-width:400px){.product-tabs button{font-size:14px;padding:10px}.product-tabs small{display:block;margin-left:0}.field-grid{grid-template-columns:1fr}.results,.inputs,.configuration,.product-summary{padding:20px}}

.catalog-picker{background:white;border:1px solid var(--line);padding:18px 20px;border-radius:8px;margin-bottom:18px}.catalog-picker label,.configuration>label{font-size:14px;font-weight:600}#product-select,#sku-select{display:block;width:100%;max-width:100%;min-width:0;min-height:50px;padding:12px 10px;margin-top:8px;font:inherit;font-size:16px;border:1px solid #aeb4bc;border-radius:6px;background:#fff;color:#25282b}select:focus-visible{outline:2px solid var(--red);outline-offset:2px}.product-tabs{display:grid;grid-template-columns:repeat(6,minmax(0,1fr))}.product-tabs button{max-width:none;min-width:0;font-size:15px;padding:12px 8px}.product-tabs small{display:block;margin:2px 0 0;font-size:13px}.product-summary,.configuration{min-width:0}#selected-name{overflow-wrap:anywhere}#sku-table td{white-space:normal;overflow-wrap:anywhere;vertical-align:top}#sku-table td:first-child{min-width:190px}#sku-table td:nth-child(2){white-space:nowrap}#sku-table small{display:block;font-size:12px;color:#747a80;margin-top:4px}#image-caption{font-size:13px}#catalog-count{font-size:14px}#selected-use{font-size:13px;overflow-wrap:anywhere}@media(max-width:760px){.product-tabs{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.catalog-picker{padding:16px}.notice{font-size:14px}.product-tabs button{font-size:14px}.product-tabs small{font-size:12px}.configuration{padding-top:20px}#product-title{font-size:24px}.intro{font-size:16px}}

#product-select,#sku-select{-webkit-appearance:none;appearance:none;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;padding-right:30px;background-image:linear-gradient(45deg,transparent 50%,#636a72 50%),linear-gradient(135deg,#636a72 50%,transparent 50%);background-position:calc(100% - 17px) 50%,calc(100% - 12px) 50%;background-size:5px 5px;background-repeat:no-repeat}

/* Tool-first home and compact product catalog. */
:root{background:#f5f6f8}.site-header{padding:20px 24px}.brand small{font-size:13px;letter-spacing:1px}.share-site{background:white;border:1px solid var(--line);font-size:14px;min-height:42px;padding:8px 13px}.tool-home{padding:20px 0 12px;scroll-margin-top:12px}.tool-heading h1{font-size:30px}.tool-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px;margin-top:20px}.tool-entry{display:flex;flex-direction:column;align-items:flex-start;gap:13px;padding:20px;border:1px solid #dfe2e6;background:white;border-radius:12px;text-align:left;color:#25282b;min-width:0}.tool-entry:hover{border-color:var(--red);background:#fffafb}.tool-symbol{display:grid;place-items:center;width:36px;height:36px;background:#a71930;color:white;border-radius:8px;font-size:18px}.tool-entry strong{display:block;font-size:18px;line-height:1.4}.tool-entry small{display:block;font-size:14px;font-weight:400;color:#6a7078;margin-top:7px;line-height:1.6}.entry-action{font-size:14px;color:var(--red);margin-top:auto}.recipe-entry .tool-symbol{background:#313942}.recipe-entry .entry-action{color:#687078}.home-share-status{font-size:14px;color:var(--red);margin:8px 0 0}.home-share-status:empty{display:none}.catalog-home{padding-top:32px}.catalog-home .section-head{margin-bottom:18px}.catalog-home h2{font-size:25px}.catalog-home .intro{margin:8px 0 0;font-size:16px}.catalog-total{font-size:14px;color:#6b727a;white-space:nowrap}.product-tabs{display:flex;flex-wrap:wrap;gap:8px}.product-tabs button{flex:none;min-height:40px;padding:8px 14px;font-size:14px;border-radius:22px}.product-tabs small{display:none}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.product-card{display:block;padding:0;background:white;border:1px solid var(--line);border-radius:12px;text-align:left;overflow:hidden;color:#25282b;min-width:0}.product-card:hover{border-color:var(--red)}.product-card img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:contain;background:white}.card-content{display:block;padding:16px}.card-content>small{display:block;font-size:12px;color:#757c84;font-weight:400}.card-content>strong{font-size:18px;display:block;line-height:1.45;margin:5px 0;min-height:2.9em}.card-config{font-size:13px;color:#6d747c;font-weight:400;display:block}.card-price{display:block;font-size:25px;color:var(--red);margin:8px 0 10px;font-variant-numeric:tabular-nums}.card-price small{font-size:12px;font-weight:400;margin-left:5px;color:#737980}.card-action{display:block;padding-top:10px;border-top:1px solid #e9ebee;font-size:14px;color:#414b55}.catalog-disclaimer{font-size:13px;color:#737b83;margin:20px 0;line-height:1.8}button:focus-visible{outline:3px solid #c96b7a;outline-offset:3px}.modal-open{overflow:hidden}dialog{padding:0;border:0;border-radius:14px;width:min(1000px,calc(100% - 40px));max-height:calc(100dvh - 50px);overflow:auto;color:#25282b;background:#f5f6f8;box-shadow:0 20px 80px #0005}dialog::backdrop{background:#11182099}.dialog-header{display:flex;justify-content:space-between;align-items:center;gap:16px;position:sticky;top:0;z-index:5;background:white;border-bottom:1px solid var(--line);padding:16px 24px}.dialog-header h2{font-size:21px}.close-dialog{min-height:42px;flex-shrink:0;border:1px solid var(--line);padding:7px 13px;background:white;font-size:14px}.dialog-body{padding:24px}.dialog-body .product{border-radius:10px}.dialog-body .configuration{position:static}.dialog-body .catalog-picker{margin-bottom:16px}.dialog-body .source-note{line-height:1.8}.dialog-body .calculator{margin-top:0}.dialog-intro{margin:0 0 20px;color:#626b75;font-size:16px}.energy-inputs{background:white;border:1px solid var(--line);padding:24px;border-radius:10px}.energy-inputs h3:not(:first-child){margin:28px 0 14px}.energy-inputs>label{font-size:14px}#fuel-type{display:block;width:100%;font:inherit;padding:12px;margin:8px 0 18px;border:1px solid #b5bbc3;border-radius:6px;background:white}.energy-results{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:24px;background:#282c31;color:white;border-radius:10px;margin-top:20px}.energy-result>span{font-size:15px;color:#d1d6dc}.energy-result strong{display:block;font-size:34px;margin:6px 0;font-variant-numeric:tabular-nums}.energy-result small{font-size:13px;color:#bbc4cd}.energy-results>p{grid-column:1/-1;margin:0;font-size:15px}.energy-results #energy-error{color:#ffb4c0}.energy-results p:empty{display:none}.energy-actions{display:flex;gap:14px;margin-top:20px}.energy-actions .primary{width:auto;flex:1}.plain-button{border:1px solid var(--line);background:white;font-size:14px}.share-status{font-size:14px;line-height:1.7}.share-copy{background:white;color:#25282b;font-size:14px}.recipe-preview{padding:28px;background:white;border:1px solid var(--line);border-radius:10px}.recipe-preview p{font-size:16px;line-height:1.8}.coming-soon{display:inline-block;background:#f0f1f3;border-radius:20px;padding:7px 14px;font-size:14px;color:#636c75}.recipe-gallery img{display:block;width:100%;height:auto;margin:18px 0}.dialog-body .product-summary{padding:24px}.dialog-body .product-image{max-width:380px}.dialog-body .selection{padding:20px 0}.dialog-body .details{background:white}.dialog-body .help{font-size:14px}#recipe-dialog{max-width:700px}
@media(max-width:760px){.site-header{padding:14px 16px}.brand small{font-size:12px;letter-spacing:0}.share-site{font-size:13px;padding:7px 10px}.tool-home{padding-top:12px}.tool-heading h1{font-size:24px}.tool-heading .eyebrow{font-size:12px}.tool-grid{grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}.tool-entry{padding:14px;gap:10px}.tool-entry strong{font-size:16px}.tool-entry small{font-size:13px;line-height:1.5}.tool-symbol{width:30px;height:30px;font-size:16px}.entry-action{font-size:13px}.recipe-entry{grid-column:1/-1;display:grid;grid-template-columns:30px 1fr auto;align-items:center;gap:12px;padding:14px}.recipe-entry small{margin:3px 0 0;font-size:12px}.recipe-entry .entry-action{margin:0;font-size:12px}.catalog-home{padding-top:24px}.catalog-home .section-head{display:flex;align-items:flex-end;gap:8px}.catalog-home h2{font-size:22px}.catalog-home .intro{font-size:14px}.catalog-total{font-size:12px;white-space:normal;text-align:right;max-width:68px}.product-tabs{gap:7px}.product-tabs button{font-size:13px;padding:7px 11px;min-height:38px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.card-content{padding:12px}.card-content>strong{font-size:15px}.card-content>small,.card-config{font-size:12px}.card-price{font-size:21px;margin:7px 0}.card-price small{font-size:12px;display:block;margin-left:0}.card-action{font-size:12px}.catalog-disclaimer{font-size:12px}dialog{width:100%;height:100dvh;max-height:100dvh;max-width:100%;margin:0;border-radius:0}.dialog-header{padding:12px 16px}.dialog-header h2{font-size:18px}.dialog-body{padding:16px 16px calc(24px + env(safe-area-inset-bottom))}.dialog-body .product-summary,.dialog-body .configuration{padding:20px}.energy-inputs{padding:20px}.energy-results{padding:20px;gap:15px}.energy-result strong{font-size:27px}.energy-result small{display:block;font-size:12px}.energy-actions{flex-direction:column;gap:10px}.recipe-preview{padding:22px}.dialog-intro{font-size:15px}.bottom-nav{gap:60px}}

.brand-logo{display:block;width:58px;height:58px;object-fit:contain;flex-shrink:0}.brand{min-width:0}.share-site{flex-shrink:0}@media(max-width:760px){.site-header{gap:10px;flex-wrap:wrap}.brand{gap:10px}.brand-logo{width:48px;height:48px}}

.sales-help{font-size:16px;line-height:1.8;color:#414b55;margin:18px 0 10px}.profit-highlight{padding-bottom:24px;margin-bottom:24px;border-bottom:1px solid #ffffff29}.profit-highlight strong{font-size:clamp(48px,5vw,66px);line-height:1.35;letter-spacing:-1px;overflow-wrap:anywhere}.profit-highlight p{margin-bottom:0}.profit-highlight strong[data-loss="true"]{color:#ffb4c0}

.remember-note{padding:16px 18px;margin-bottom:20px;background:white;border:1px solid var(--line);border-radius:10px}.remember-note p{font-size:14px;line-height:1.7;margin:0 0 10px}.remember-note .remember-status{margin:10px 0 0;color:#626b75}.remember-status:empty{display:none}#faq-dialog,#community-dialog{max-width:760px}#faq-dialog .details:first-child{margin-top:0}#faq-dialog summary{line-height:1.6}#faq-dialog summary:focus-visible{outline:3px solid #c96b7a;outline-offset:3px}

footer{flex-wrap:wrap;gap:12px 24px}.icp-link{font-size:14px;text-underline-offset:3px;overflow-wrap:anywhere}