.surface-tool{max-width:1100px;margin:var(--header) auto 0;padding:28px 24px 60px;height:auto;overflow:visible;line-height:1.55}.surface-tool h1{font-size:clamp(28px,5vw,48px);line-height:1.12;margin:18px 0}.surface-tool h2{font-size:clamp(23px,4vw,30px)}.surface-tool h3{font-size:25px}.surface-tool .eyebrow{display:block;margin-top:14px}.surface-tool a{color:#365c7b}.source-scheme{width:100%;max-height:235px;display:block;margin:24px auto;font:20px sans-serif;overflow:visible}.surface-panel{border:1px solid #365c7b;border-radius:12px;padding:22px;margin:24px 0}.surface-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.surface-fields label{display:flex;flex-direction:column;gap:8px;font-size:18px}.surface-fields input,.surface-fields select{font:inherit;color:inherit;width:100%;min-width:0;min-height:48px;background:#fffdf8;border:1px solid #365c7b;border-radius:8px;padding:10px;box-sizing:border-box}.surface-fields input:disabled{opacity:.5}.surface-check{display:flex;gap:12px;align-items:center;margin-top:18px}.surface-check input{width:22px;height:22px;flex-shrink:0}.surface-tool .muted{font-size:16px;color:#59645f}.surface-presets{display:flex;flex-wrap:wrap;gap:10px}.surface-presets button{padding:12px;font:inherit;border:1px solid #41664d;border-radius:8px;background:#e5efe5;color:#294d35;cursor:pointer}.surface-tool summary{cursor:pointer;font-weight:bold;min-height:44px}.surface-tool details[open]>summary{margin-bottom:20px}.surface-model{border:2px solid #41664d;border-radius:12px;padding:24px;margin:18px 0;background:#e5efe5}.surface-model.warn,.surface-model.unknown{border-color:#ad662f;background:#f4ebdf}.surface-model.bad{border-color:#994e3f;background:#f4e6df}.surface-verdict{font-weight:bold}.surface-numbers{display:grid;grid-template-columns:1fr 1fr;gap:20px}.surface-numbers strong{font-size:30px}.surface-numbers small{display:block;font-size:15px;font-weight:normal}.surface-model dl{display:grid;grid-template-columns:1fr 2fr;gap:12px 18px;font-size:17px}.surface-model dt{font-weight:bold}.surface-model dd{margin:0}.surface-tool .surface-cta{display:inline-block;color:#fffdf8;background:#365c7b;border:2px solid #365c7b;border-radius:9px;padding:14px 20px;text-align:center;font-weight:bold;text-decoration:none}.surface-tool :focus-visible{outline:3px solid #246d6b;outline-offset:3px}.surface-tool [hidden]{display:none!important}#results-title{scroll-margin-top:calc(var(--header) + 24px)}@media(max-width:600px){.surface-tool{padding:22px 18px 40px}.surface-panel,.surface-model{padding:18px}.surface-fields{grid-template-columns:1fr;gap:16px}.surface-model dl{grid-template-columns:1fr;gap:4px}.surface-model dd{margin-bottom:14px}.surface-numbers{gap:10px}.surface-tool .surface-cta{display:block}.source-scheme{margin:14px 0}}
/* Simple task-first selector; engineering inputs remain optional. */
.purpose-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.purpose-buttons button{min-width:0;min-height:104px;padding:12px;border:2px solid #365c7b;border-radius:10px;color:#365c7b;background:#fffdf8;font:inherit;font-weight:bold;cursor:pointer}.purpose-buttons button[aria-pressed=true]{background:#e5efe5;border-color:#41664d;color:#294d35;box-shadow:inset 0 0 0 1px #41664d}.purpose-buttons svg{display:block;width:46px;height:40px;margin:0 auto 9px;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.surface-intro{max-width:780px}.surface-hint{background:#e5edf4;padding:14px;border-radius:8px;font-size:17px}.calculate-button{font:inherit;cursor:pointer;width:100%;min-height:54px}.surface-results{scroll-margin-top:calc(var(--header) + 20px)}#result-status{padding:18px;border-left:4px solid #41664d;background:#e5efe5;font-size:20px;font-weight:bold}.selection-lead{margin:20px 0}.selection-lead>strong{display:block;font-size:34px;color:#365c7b}.selection-lead>span{font-size:17px}.surface-model.compact-model{background:transparent;border:1px solid #b8c2c4;padding:18px;margin:12px 0}.compact-model h3{font-size:23px;margin:8px 0}.compact-model .eyebrow{margin:0}.surface-model.chosen{border:2px solid #41664d;background:#e5efe5}.compact-model p{margin:10px 0}.compact-model summary{font-size:16px}.class-row{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid #d8d7ce}.shopping-summary{padding:14px;background:#fffdf8;border:1px solid #365c7b;border-radius:8px}.shopping-summary p{font-size:17px;margin:8px 0}.surface-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.surface-actions button{font:inherit;color:#365c7b;background:#e5edf4;border:1px solid #365c7b;border-radius:8px;padding:12px;min-height:48px;cursor:pointer}#share-fallback input{font:inherit;width:100%;padding:12px;min-width:0}#extra-settings{margin-top:20px}#extra-settings summary{color:#365c7b}.surface-tool a:not(.surface-cta){text-decoration:underline;text-underline-offset:3px}@media(max-width:600px){.purpose-buttons{gap:7px}.purpose-buttons button{font-size:15px;min-height:112px;padding:9px 5px}.surface-actions{display:grid;grid-template-columns:1fr}.class-row{display:grid;gap:3px}.surface-intro{font-size:18px}}@media print{header,.site-finder,.site-share,.related-content,.surface-tool>section:not(#selection),.surface-tool>details,#surface-form,.surface-actions,#share-fallback,#copy-status,.surface-tool>.eyebrow,.surface-tool>a{display:none!important}.surface-tool{margin:0;padding:0}.surface-model,.selection-lead{display:none}.surface-tool h1{font-size:22px}.surface-panel{border:0;margin:0;padding:0}.shopping-summary{border:0}.surface-tool #selection{display:block!important}.surface-tool #shopping-section{display:block!important}#result-status{font-size:16px;padding:8px}.shopping-summary p{font-size:13px}}
.simple-alternatives{margin-top:14px;padding-top:12px;border-top:1px solid #b8c2c4}.alternative-row{margin-top:14px;padding:14px;border:1px solid #41664d;border-radius:8px;background:#fffdf8}.alternative-row p{font-size:16px!important}.alternative-row strong{font-size:18px}


.surface-tool .seller-button{display:block;box-sizing:border-box;width:100%;padding:16px 20px;min-height:56px;border:2px solid #41664d;border-radius:9px;background:#41664d;color:#fffdf8;text-align:center;font-size:22px;list-style:none}.seller-button::-webkit-details-marker{display:none}.seller-button::after{content:' ▾'}details[open]>.seller-button::after{content:' ▴'}#shopping-section{margin-top:16px}#shopping-text[open]>.seller-button{margin-bottom:16px}.seller-button:focus-visible{outline:3px solid #365c7b;outline-offset:3px}.surface-tool .seller-button:hover{background:#294d35}@media print{.seller-button{display:none!important}.shopping-summary details>p{display:block!important}}