:root{--pink:#cc1457;--lime:#bacd28;--ink:#343b3e;--muted:#667278;--line:#dce2e4}*{box-sizing:border-box}body{margin:0;background:#f4f6f7;color:var(--ink);font:15px/1.5 Arial,sans-serif}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button:disabled{opacity:.4;cursor:default}a{color:inherit}button:focus-visible,a:focus-visible{outline:3px solid #2379ad;outline-offset:4px}header{background:white;border-bottom:1px solid var(--line);padding:22px max(24px,calc((100% - 1180px)/2));display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{color:#aabd1e;text-decoration:none;font-weight:900;font-size:29px;line-height:1}.brand span{color:#474d50}.brand small{display:block;font-size:9px;letter-spacing:2px;color:var(--muted);margin-top:9px}.preview{font-size:10px;letter-spacing:1px;border:1px solid var(--line);border-radius:5px;padding:7px 10px}main{max-width:1228px;margin:auto;padding:35px 24px}.eyebrow{font-size:10px;letter-spacing:1.5px;font-weight:bold;color:var(--muted);margin:0 0 8px}h1{font-size:37px;letter-spacing:-1px;margin:0 0 8px;line-height:1.2}.intro>p:last-child{color:var(--muted);margin:0 0 28px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:22px;align-items:start}.panel,.summary{background:white;border:1px solid var(--line);border-radius:14px;padding:26px}.panel-top{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:bold}.panel-top button{border:0;background:none;color:var(--muted);font-size:11px;text-decoration:underline;min-height:32px}.progress{display:flex;gap:5px;margin:14px 0 28px}.progress span{flex:1;border-top:3px solid #e4e8ea;padding-top:7px;font-size:9px;white-space:nowrap;color:#899398}.progress .done{border-color:var(--lime)}.progress .active{border-color:var(--pink);color:var(--pink);font-weight:bold}h2{font-size:26px;letter-spacing:-.5px;line-height:1.2;margin:0 0 10px}.help{color:var(--muted);font-size:13px;max-width:600px;margin:0 0 23px}.choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.choice{border:1px solid var(--line);border-radius:10px;background:#fff;padding:18px;text-align:left;display:flex;flex-direction:column;min-height:230px;transition:background .12s,border-color .12s}.choice:hover{border-color:#92a41c;background:#f8faeb}.choice strong{font-size:17px;line-height:1.3;overflow-wrap:anywhere}.explain{font-size:11px;color:var(--muted);margin:10px 0 18px}.option-bottom{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted);padding-top:11px;border-top:1px solid #e8ecee}.option-bottom b{font-size:23px;font-weight:normal;color:var(--pink)}.option-no{font-size:26px;color:#a7b721;font-weight:bold;margin:5px 0 19px}.sample{display:block;height:64px;position:relative;margin-bottom:20px;background:linear-gradient(90deg,#fff 35%,#d9e5bd 35%,#d9e5bd 70%,#fff 70%);border-radius:5px}.sample i{position:absolute;width:56px;height:43px;border:1px solid #9bafb9;background:#e6f0f559;left:calc(50% - 22px);top:10px;transform:skewY(-10deg)}.sample i+ i{left:calc(50% - 31px);top:6px}.sample.opal i{background:#e4e5daec}.sample.opaque i{background:#626e76;border-color:#526069}.footnote{font-size:11px;color:var(--muted);margin:18px 0 25px}.navigation{display:flex;align-items:center;justify-content:space-between;gap:15px;border-top:1px solid var(--line);padding-top:18px;margin-top:20px}.back{border:1px solid var(--line);background:white;border-radius:6px;padding:9px 14px}.show{border:0;background:none;color:var(--pink);font-size:12px;text-decoration:underline;min-height:42px}.summary h2{font-size:24px}.empty{color:var(--muted);font-size:13px;margin:20px 0 30px}.match{background:#f3f6dd;border-radius:8px;padding:14px;margin-top:20px}.match strong{display:block;font-size:13px}.match span{font-size:10px;color:var(--muted)}.note{font-size:12px;color:var(--muted);margin:18px 0 0}dl{margin:20px 0}dl div{border-bottom:1px solid var(--line);padding:9px 0}dt{font-size:10px;color:var(--muted)}dd{font-size:13px;font-weight:bold;margin:2px 0 0}.results{display:grid;gap:12px}.results article{border:1px solid var(--line);border-radius:8px;padding:18px}.results h3{font-size:17px;margin:0 0 9px}.spec,.formats{font-size:12px;color:var(--muted)}.buy{display:inline-block;background:var(--pink);padding:11px 15px;color:white;text-decoration:none;font-size:12px;border-radius:5px}footer{margin-top:24px;font-size:11px;color:var(--muted);display:flex;align-items:start;justify-content:space-between;gap:30px}footer p{max-width:760px;margin:0}footer a{white-space:nowrap}.skip{position:absolute;top:-100px;background:white;padding:10px}.skip:focus{top:8px;z-index:10}#question:focus{outline:none}
.explain:empty,.footnote:empty{display:none}
.review-note{background:#fff5d8;border-left:3px solid #c69422;padding:10px;font-size:12px}.sample.tinted i{background:#9c8167bb}.sample.all i{background:linear-gradient(90deg,#e3ebeb,#738185)}
.format-pages{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:18px}.format-pages button{min-height:44px;background:white;border:1px solid var(--line);border-radius:6px;padding:8px 10px;font-size:11px}.format-pages span{font-size:11px;color:var(--muted);white-space:nowrap}
.choices:has(>button:nth-child(2):last-child){grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:1000px){.layout{grid-template-columns:minmax(0,1fr) 215px}.panel,.summary{padding:20px}.choice{padding:13px}.choice strong{font-size:15px}.progress span{font-size:8px}.choice{min-height:235px}}
@media(max-width:750px){.choices:has(>button:nth-child(2):last-child){grid-template-columns:1fr}}
@media(max-width:750px){header{padding:18px 16px}.brand{font-size:23px}.preview{font-size:8px;padding:6px}main{padding:24px 16px}h1{font-size:29px}.intro>p:last-child{font-size:13px;margin-bottom:20px}.layout{display:flex;flex-direction:column;gap:16px}.panel,.summary{width:100%;padding:18px}.progress{gap:4px;margin-bottom:22px}.progress span{font-size:0;padding-top:0;border-top-width:4px}h2{font-size:24px}.help{font-size:12px;margin-bottom:18px}.choices{grid-template-columns:1fr;gap:9px}.choice{min-height:0;display:grid;grid-template-columns:49px minmax(0,1fr);column-gap:14px;padding:14px}.sample{grid-row:1/4;height:61px;margin:0;background:none}.sample i{width:38px;height:44px;left:9px}.sample i+ i{left:3px}.choice strong{font-size:16px}.explain{font-size:11px;margin:5px 0 8px}.option-bottom{padding-top:5px;font-size:10px}.option-bottom b{font-size:18px;line-height:1}.option-no{grid-row:1/4;font-size:25px;align-self:center;margin:0}.navigation{gap:10px}.back{min-height:44px;padding:9px 12px}.show{font-size:11px}.footnote{font-size:10px;margin:15px 0 0}.summary{padding:17px}.summary h2{font-size:21px}.empty{margin:10px 0}.match{margin-top:14px}dl{display:grid;grid-template-columns:1fr 1fr;gap:0 15px;margin:8px 0}.note{font-size:11px}footer{display:block;font-size:10px}footer a{display:inline-block;margin-top:12px}}

header{padding:12px 20px}.brand{font-size:22px}main{padding-top:22px}.results article{display:grid;grid-template-columns:130px minmax(0,1fr);gap:18px}.product-image{width:130px;height:130px;object-fit:contain;background:#f3f5f6;border-radius:8px}.format-label{display:block;font-size:12px;margin-bottom:14px}.format-label select{display:block;width:100%;max-width:100%;min-height:44px;border:1px solid var(--line);border-radius:5px;background:white;color:var(--ink);font:inherit;margin-top:6px;padding:9px}select:focus-visible{outline:3px solid #2379ad;outline-offset:2px}.results .buy{min-height:44px}.results h3{overflow-wrap:anywhere}.results .review-note{margin:8px 0}.results article>div{min-width:0}@media(max-width:500px){.results article{grid-template-columns:1fr;padding:14px;gap:10px}.product-image{width:100%;height:145px}.format-pages button{max-width:40%;overflow-wrap:anywhere}h1{font-size:27px}}
 .sample.profiled i{transform:skewY(-12deg);background:repeating-linear-gradient(90deg,#eef3f4 0px,#eef3f4 7px,#9caeb5 8px,#9caeb5 11px)}.sample.multiwall i{background:repeating-linear-gradient(90deg,#e2eef2 0px,#e2eef2 8px,#9aadb8 9px,#9aadb8 10px)}.progress{flex-wrap:wrap}.progress span{min-width:50px}.choice .explain{line-height:1.5}
.summary[hidden]{display:none}.layout{grid-template-columns:minmax(0,1fr)}
footer[hidden]{display:none}
/* Compact introduction; keep the H1 and keyboard-friendly restart control. */
main{padding-top:12px}.intro>p{display:none}.intro h1{font-size:22px;line-height:1.2;letter-spacing:-.3px;margin:0 0 10px}.panel{padding-top:14px}.panel-top{justify-content:space-between}#stage{display:none}.progress{margin:6px 0 16px}
.panel-top .back{border:0;background:none;color:var(--muted);font-size:13px;text-decoration:underline;min-height:40px;padding:0}.panel-top #reset{font-size:13px;min-height:40px}.panel-top .back:hover{color:var(--pink)}.navigation{justify-content:flex-end}.navigation:has(#show[hidden]){display:none}
@media(max-width:750px){main{padding-top:10px}.intro h1{font-size:20px;margin-bottom:8px}.panel{padding-top:10px}.progress{margin:4px 0 12px}}
.choice .explain{font-size:14px;line-height:1.5}.help{font-size:14px}
.progress button{flex:1;min-width:64px;min-height:44px;padding:6px 3px;border:0;border-top:3px solid #e4e8ea;background:transparent;font-size:11px;text-align:left;color:var(--muted);line-height:1.3}.progress button.done{border-top-color:var(--lime);color:var(--ink);text-decoration:underline;text-underline-offset:3px}.progress button.active{border-top-color:var(--pink);color:var(--pink);font-weight:bold}.progress button:disabled{opacity:1;color:#737c80;cursor:default}.progress button:not(:disabled):hover{background:#f3f6dd}.progress button:focus-visible{outline:3px solid #2379ad;outline-offset:1px}
@media(max-width:750px){.choice .explain{font-size:13px}.progress{gap:4px}.progress button{font-size:10px;min-width:60px}}
.material-point{display:block;margin-top:9px}.material-point:first-child{margin-top:0}.material-point b{color:var(--ink);font-weight:700}
.system-help{font-size:14px;line-height:1.55}.system-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.system-actions .buy,.system-actions .helper-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:11px 15px;line-height:1.4;border-radius:6px;text-decoration:none;font-weight:700;box-sizing:border-box}.system-actions .buy{margin:0}.system-actions .helper-link{border:2px solid var(--pink);color:var(--pink);background:#fff}.system-actions .helper-link:hover{background:#fff0f5}.system-actions .helper-link:focus-visible{outline:3px solid #2379ad;outline-offset:3px}.system-or{color:var(--muted)}
@media(max-width:750px){.system-actions{flex-direction:column;align-items:stretch;gap:7px}.system-or{text-align:center}.system-actions .buy,.system-actions .helper-link{font-size:13px}}
.format-all{margin:0 0 16px}.format-all button{width:100%;min-height:46px;border:1px solid var(--pink);border-radius:7px;background:var(--pink);color:#fff;font:inherit;font-weight:700;padding:12px 18px;cursor:pointer}.format-all button:hover{filter:brightness(.92)}.format-all button:focus-visible{outline:3px solid #2379ad;outline-offset:3px}
.choices.choices--compact{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}.choices--compact .choice{display:flex;min-height:76px;padding:12px 14px;gap:5px}.choices--compact .option-no,.choices--compact .explain:empty{display:none}.choices--compact .option-bottom{border:0;padding:0}.choices--compact .choice strong{font-size:15px}.choices--compact .explain{margin:0}
@media(max-width:750px){.choices.choices--compact{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.choices--compact .choice{padding:10px;min-height:76px}.choices--compact .choice strong{font-size:13px}}
/* Shared, background-free technical illustration series. */
.board-art{display:block;width:100%;height:118px;margin:-6px 0 12px;pointer-events:none}.board-art svg{display:block;width:100%;height:100%;overflow:visible}.choice:has(.board-art){padding-top:12px}.choice:hover .board-art{filter:brightness(1.025)}
@media(max-width:750px){.choice:has(.board-art){grid-template-columns:86px minmax(0,1fr);column-gap:12px;padding:14px}.board-art{grid-row:1/4;align-self:start;width:86px;height:78px;margin:0}.board-art svg{height:78px}.choice:has(.board-art) .explain{grid-column:2}.choice:has(.board-art) .option-bottom{grid-column:2}}
@media(max-width:360px){.choice:has(.board-art){grid-template-columns:64px minmax(0,1fr);gap:8px}.board-art,.board-art svg{width:64px;height:66px}}
@media(max-width:750px){.choice:has(.board-art--kind){display:flex;flex-direction:column;gap:6px}.choice .board-art--kind,.choice .board-art--kind svg{width:100%;height:105px}.choice:has(.board-art--kind) .explain{margin:3px 0 8px}.choice:has(.board-art--kind) .option-bottom{width:100%}}
@media(max-width:360px){.choice .board-art--kind,.choice .board-art--kind svg{width:100%;height:92px}}
.board-art--photo{height:205px;margin:-6px 0 12px;background:#fff;border-radius:5px;overflow:hidden}.board-art--photo img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}
@media(max-width:750px){.choice .board-art--photo{height:185px}.choice .board-art--photo img{height:100%}}
@media(max-width:360px){.choice .board-art--photo{height:165px}}
.choices.choices--colors{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}.choices--colors .choice:has(.board-art){display:flex;flex-direction:column;padding:14px;gap:8px;min-height:0}.choices--colors .board-art{width:100%;height:112px;margin:0;align-self:center}.choices--colors .board-art svg{width:100%;height:100%}.choices--colors .explain:empty{display:none}.choices--colors .choice strong{font-size:15px}.choices--colors .option-bottom{width:100%;margin-top:auto}.choices--colors .choice .explain{margin:0}
@media(max-width:750px){.choices.choices--colors{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.choices--colors .choice:has(.board-art){padding:10px;gap:6px}.choices--colors .board-art{height:90px}.choices--colors .choice strong{font-size:13px;overflow-wrap:anywhere}}
.help:empty{display:none}
.footnote:empty{display:none}
.explain:empty{display:none}.choices--thickness .choice{min-height:100px}.choices--thickness .option-no{margin:0 0 5px;font-size:19px}.choices--thickness .option-bottom{margin-top:auto}
@media(max-width:750px){.choices--thickness .choice{display:flex;min-height:86px}.choices--thickness .option-no{margin:0;font-size:16px}}
/* Navigation has a quiet secondary row and one clearly visible results action. */
.panel-top{gap:10px}.panel-top #back,.panel-top #reset{display:inline-flex;align-items:center;justify-content:center;min-height:42px;font-size:13px;font-weight:600;text-decoration:none;border-radius:6px;padding:8px 13px;line-height:1.25}.panel-top #back{border:1px solid var(--line);background:#fff;color:var(--ink)}.panel-top #back:hover{border-color:var(--pink);color:var(--pink);background:#fff}.panel-top #back:disabled{visibility:hidden}.panel-top #reset{margin-left:auto;border:0;background:#f3f5f6;color:#536066}.panel-top #reset:hover{background:#e9eef0;color:var(--ink)}.navigation{border-top:0;padding-top:0;margin-top:18px}.navigation #show{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:1px solid var(--pink);border-radius:6px;background:#fff;color:var(--pink);font-size:14px;font-weight:700;text-decoration:none;line-height:1.3}.navigation #show:hover{background:#fff0f5}.navigation #show[hidden]{display:none}
@media(max-width:500px){.panel-top #back,.panel-top #reset{font-size:13px;min-height:44px;padding:8px 12px}.navigation #show{width:100%;font-size:14px}}
.result-common{margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.5}.result-difference{margin:8px 0 14px;font-weight:600;font-size:14px;line-height:1.45}.result-guidance{margin-top:18px;padding:16px 18px;border:1px solid var(--line);border-radius:8px;background:#f7f9fa}.result-guidance p{margin:0 0 12px;font-size:14px;line-height:1.5}.result-guidance p:last-child{margin-bottom:0}
.choice-trail{margin:5px 0 20px;padding:12px 14px;border:1px solid #e0e6d2;border-radius:8px;background:#f9fbf0;display:flex;align-items:flex-start;gap:14px}
.choice-trail[hidden]{display:none}.trail-label{flex:none;padding-top:9px;color:#536066;font-size:12px;font-weight:700;white-space:nowrap}.trail-items{display:flex;flex-wrap:wrap;align-items:center;gap:5px 2px;min-width:0}.trail-segment{display:inline-flex;align-items:center;white-space:nowrap}.trail-choice,.trail-current{display:inline-flex;align-items:center;min-height:38px;border-radius:6px;padding:6px 10px;font-size:12px;line-height:1.25}.trail-choice{border:1px solid #d5deae;background:#fff;color:#31404a;font-weight:700;text-decoration:underline;text-decoration-color:#a6b849;text-underline-offset:3px}.trail-choice:hover{border-color:#879b1a;background:#eff5d4}.trail-choice:focus-visible{outline:3px solid #2379ad;outline-offset:2px}.trail-arrow{padding:0 5px;color:#839087;font-size:15px}.trail-current{border:1px solid #899f21;background:#eaf3bd;color:#33440e;font-weight:700}
@media(max-width:750px){.choice-trail{display:block;margin:4px 0 15px;padding:10px}.trail-label{display:block;padding:0 0 6px}.trail-items{gap:5px}.trail-choice,.trail-current{min-height:44px;padding:7px 9px;font-size:12px}.trail-arrow{display:none}}