/* Shared approved ConsCalc appearance, bundled into each tool's own stylesheet. */
.nx-page{--nx-copy:var(--ui-copy,#b5bdc9);--nx-inset:#14181e;--nx-grid:#a3b0c710;--nx-shadow:#0003;max-width:1200px;padding:22px 0 48px;font-size:14px;line-height:1.65;color:var(--text)}
[data-theme=light] .nx-page{--nx-inset:#f0f3f7;--nx-grid:#52698512;--nx-shadow:#2432440b}
.nx-page *{box-sizing:border-box}.nx-page [hidden]{display:none!important}.nx-page h1,.nx-page h2,.nx-page h3,.nx-page p{margin:0}.nx-page a{color:var(--accent);text-underline-offset:3px}.nx-page :is(a,button,input,select,summary):focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.nx-breadcrumb{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:9px;font-size:11px;color:var(--muted)}
.nx-page .nx-breadcrumb a{color:var(--muted)}.nx-page .nx-breadcrumb a:first-child{color:var(--accent)}
.nx-heading{position:relative;isolation:isolate;text-align:center;padding:36px 20px 134px;overflow:hidden}.nx-heading:before{content:'';position:absolute;inset:0;z-index:-1;background-image:linear-gradient(var(--nx-grid) 1px,transparent 1px),linear-gradient(90deg,var(--nx-grid) 1px,transparent 1px);background-size:40px 40px;mask-image:radial-gradient(ellipse at center,#000,transparent 75%)}
.nx-heading:after{content:'';position:absolute;bottom:-5px;left:50%;transform:translateX(-50%);width:270px;height:150px;background:var(--nx-art) center/contain no-repeat;filter:drop-shadow(0 12px 12px var(--nx-shadow));pointer-events:none}
.nx-page .nx-heading h1{font-size:40px;font-weight:600;line-height:1.18;letter-spacing:-1.4px;margin-bottom:13px}.nx-page .nx-heading p{max-width:680px;margin:auto;font-size:13px;line-height:1.85;color:var(--nx-copy)}
.nx-calculator{background:var(--surface);position:relative;border:1px solid var(--border);border-top:2px solid var(--accent);border-radius:17px;box-shadow:0 15px 45px var(--nx-shadow);overflow:hidden}
.nx-workspace{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}.nx-form{display:flex;flex-direction:column;gap:14px;padding:27px 30px 28px;min-width:0}.nx-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:start}.nx-field{min-width:0}.nx-field>small{display:block;margin-top:6px;line-height:1.7}.nx-field-wide{grid-column:1/-1}.nx-page label{display:block;font-size:11px;line-height:1.6;margin:0 0 6px;font-weight:500;color:var(--nx-copy)}.nx-page input,.nx-page select{display:block;width:100%;min-width:0;border:1px solid var(--border);border-radius:7px;background:var(--nx-inset);color:var(--text);padding:8px 12px;font:inherit;font-size:13px;height:43px}.nx-page input[aria-invalid=true]{border-color:var(--accent)}.nx-page small{font-size:11px;color:var(--nx-copy)}
.nx-page .nx-help{font-size:11px;color:var(--nx-copy);line-height:1.7;margin-top:8px}.nx-page fieldset{margin:0;min-width:0;padding:16px;border:1px solid var(--border);border-radius:9px}.nx-page legend{font-size:12px;padding:0 7px}.nx-page details.nx-options{margin:0;border:1px solid var(--border);border-radius:8px;padding:0 13px;background:var(--ax-soft,#ffffff04)}.nx-options summary{display:flex;align-items:center;gap:8px;flex-wrap:wrap;cursor:pointer;color:var(--ui-secondary,#c2cad6);list-style:none;padding:12px 0;font-size:12px;font-weight:500;line-height:1.6}.nx-options[open] summary{border-bottom:1px solid var(--border);margin-bottom:12px}.nx-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:20px}.nx-page button{font:inherit;font-size:13px;font-weight:500;line-height:1.65;cursor:pointer;border:1px solid var(--ui-line,#414a57);border-radius:7px;padding:9px 16px;min-height:43px;color:var(--text);background:var(--ui-button,#252b34)}.nx-page button:hover{filter:brightness(1.08)}.nx-page button.nx-primary{background:var(--accent);color:var(--ui-on-accent,#241716);border-color:var(--accent);font-weight:600;padding-inline:23px}.nx-page button:disabled{opacity:.5;cursor:default}
.nx-result{padding:28px 30px;background:var(--ui-results,#171a20);border-left:1px solid var(--border);min-width:0;position:relative}.nx-page .nx-result h2{font-size:18px;letter-spacing:-.4px;margin:0 0 13px;padding-bottom:17px;border-bottom:1px solid var(--border)}.nx-page .nx-empty{font-size:12px;color:var(--nx-copy);line-height:1.8}.nx-result-main{padding:19px 15px;border:1px solid var(--ui-accent-line,#ff786b45);border-radius:9px;background:var(--ui-accent-soft,#ff786b0b);margin:11px -15px}.nx-result-main strong{display:block;font-size:27px;line-height:1.4;letter-spacing:-.8px;font-weight:600;color:var(--accent)}.nx-result-main span{display:block;font-size:12px;color:var(--nx-copy);margin-top:7px}.nx-result dl{margin:21px 0 18px}.nx-result dl>div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:baseline;gap:16px;padding:14px 0;border-bottom:1px solid var(--border)}.nx-result dt{color:var(--nx-copy);font-size:11px;line-height:1.6}.nx-result dd{margin:0;text-align:right;min-width:0;overflow-wrap:anywhere;font-variant-numeric:tabular-nums;font-size:17px;font-weight:500;line-height:1.4}.nx-page .nx-assumptions{font-size:11px;white-space:pre-line;line-height:1.8;color:var(--nx-copy);margin-top:17px}.nx-error{border:1px solid var(--accent);border-radius:6px;padding:10px;font-size:12px;color:var(--text);margin-top:12px}.nx-status{font-size:11px;color:var(--nx-copy);margin-top:10px}
.nx-reading{max-width:1080px;margin:42px auto 0;border-top:1px solid var(--border)}.nx-page .nx-panel{padding:26px 30px;border:1px solid var(--border);border-radius:13px;background:var(--surface);margin-bottom:23px}.nx-page .nx-panel>h2{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:600;line-height:1.35;letter-spacing:-.4px;border-bottom:1px solid var(--border);padding-bottom:16px;margin-bottom:22px;scroll-margin-top:24px}.nx-panel>h2:before{content:'';flex:none;width:4px;height:20px;border-radius:3px;background:var(--accent)}.nx-page .nx-panel h3{font-size:14px;line-height:1.6;letter-spacing:normal;margin:20px 0 7px;font-weight:600}.nx-page .nx-panel p,.nx-panel li{font-size:13px;line-height:1.9;color:var(--nx-copy);margin-bottom:14px}.nx-page .nx-panel p:last-child{margin-bottom:0}.nx-panel strong{color:var(--text);font-weight:600}.nx-formula{padding:15px 18px;border:1px solid var(--border);background:var(--nx-inset);border-radius:9px;margin:16px 0;font-size:13px;line-height:1.9}.nx-table{overflow:auto;max-width:100%;margin:17px 0}.nx-table table{width:100%;border-collapse:collapse;font-size:12px}.nx-table th,.nx-table td{text-align:left;padding:12px;border:1px solid var(--border);min-width:105px}.nx-table th{background:var(--nx-inset);font-weight:500}.nx-table caption{text-align:left;color:var(--nx-copy);font-size:11px;margin-bottom:9px}.nx-diagram{display:block;width:100%;max-width:600px;height:auto;margin:18px auto}.nx-sources{font-size:12px}.nx-page .nx-sources p,.nx-page .nx-sources li{font-size:11px;line-height:1.75}.nx-page .nx-sources>h2{font-size:14px;letter-spacing:0;padding-bottom:10px;margin-bottom:12px}.nx-sources ul{padding-left:18px}.nx-page .nx-sources>h2:before{display:none}
@media(max-width:900px){.nx-form,.nx-result{padding:23px}.nx-page .nx-panel{padding:23px}}
@media(max-width:760px){.nx-page{padding-top:18px}.nx-page .nx-heading h1{font-size:30px;letter-spacing:-.8px}.nx-heading{padding:28px 7px 115px}.nx-heading:after{width:230px;height:130px}.nx-workspace{grid-template-columns:minmax(0,1fr)}.nx-form{padding:23px}.nx-result{border-left:0;border-top:1px solid var(--border);padding:23px}.nx-page .nx-panel{padding:20px}.nx-page .nx-panel>h2{font-size:18px}.nx-reading{margin-top:32px}.nx-page .nx-heading p{font-size:12px}.nx-page fieldset{padding:13px}}
/* Form flow: grid gaps within rows, one gap between groups. */
.nx-form>.nx-actions{margin-top:6px}
.nx-form fieldset+fieldset{margin-top:14px}
.nx-options>:is(.nx-field,.nx-fields,div[id])+:is(.nx-field,.nx-fields,div[id]){margin-top:14px}
.nx-options>.nx-fields:not(:has(>.nx-field:not([hidden]))){display:none}
.nx-options>.nx-fields:not(:has(>.nx-field:not([hidden])))+.nx-field{margin-top:0}
@media(max-width:480px){.nx-result{padding:19px}.nx-page .nx-panel{padding:18px}.nx-page .nx-panel>h2{font-size:17px;gap:9px}.nx-form{padding:19px;gap:10px}.nx-fields{gap:10px}.nx-form>.nx-actions{margin-top:10px}.nx-form fieldset+fieldset{margin-top:10px}.nx-options>:is(.nx-field,.nx-fields,div[id])+:is(.nx-field,.nx-fields,div[id]){margin-top:10px}}
@media(max-width:420px){.nx-page{width:calc(100% - 24px)}}
@media(max-width:360px){.nx-fields{grid-template-columns:1fr}.nx-field-wide{grid-column:auto}}
@media(prefers-reduced-motion:reduce){.nx-page *{scroll-behavior:auto!important;transition:none!important}}
@media print{.site-header,.site-footer,.nx-heading,.nx-breadcrumb,.nx-form,.nx-reading,.nx-result .nx-actions,.nx-result .nx-status,.calc-publisher,.calc-related{display:none!important}.nx-page{width:100%;padding:0;color:#000}.nx-workspace{display:block}.nx-calculator,.nx-result{border:0;background:#fff;color:#000}.nx-result *{color:#000!important}.nx-result-main strong{font-size:25px}}

.nx-page{--nx-art:url(/assets/images/materials/sod.svg)}
.sd-section [data-remove]{padding:5px 10px;min-height:30px;margin-top:12px;font-size:11px}

/* Publisher signature strip: compact attribution, distinct from article panels. */
.calc-publisher{position:relative;display:grid;grid-template-columns:68px minmax(0,1fr);align-items:center;gap:18px;max-width:1080px;margin:25px auto 0;padding:16px 22px 16px 15px;border:0;border-radius:12px;background:linear-gradient(105deg,var(--ui-accent-soft,#ff786b0d),transparent 52%),var(--ui-results,#15181e)}
.calc-publisher:before{content:'';position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;background:var(--accent);opacity:.7}
.calc-publisher-mark{display:grid;place-items:center;width:68px;height:68px;color:var(--accent)}
.calc-publisher-mark svg{display:block;width:68px;height:68px}
.calc-publisher-body{min-width:0}
.calc-publisher-header{display:flex;justify-content:space-between;align-items:center;gap:8px 16px;flex-wrap:wrap}
.calc-publisher-identity{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px}
.calc-publisher .calc-publisher-label{font-size:9px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.calc-publisher .calc-publisher-name{font-size:14px;font-weight:600;letter-spacing:-.25px;color:var(--text);line-height:1.4}
.calc-publisher-updated{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px;padding:4px 8px;border-radius:5px;background:var(--surface);font-size:10px;line-height:1.5;color:var(--muted)}
.calc-publisher-updated time{color:var(--text);font-variant-numeric:tabular-nums}
.calc-publisher .calc-publisher-description{font-size:11.5px;line-height:1.75;margin:7px 0 0;color:var(--muted)}
.calc-publisher-links{display:flex;align-items:center;flex-wrap:wrap;gap:8px 16px;margin-top:8px;font-size:11px}
.calc-publisher .calc-publisher-links a{color:var(--accent);text-underline-offset:3px}
.calc-publisher a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
@media(max-width:760px){.calc-publisher{grid-template-columns:52px minmax(0,1fr);gap:12px;padding:15px}.calc-publisher-mark,.calc-publisher-mark svg{width:52px;height:52px}.calc-publisher .calc-publisher-name{font-size:13px}}
@media(max-width:600px){.calc-publisher{grid-template-columns:minmax(0,1fr);gap:0;padding:13px 15px;margin-top:21px}.calc-publisher:before{top:15px;bottom:15px}.calc-publisher-mark{position:absolute;left:10px;top:10px;width:43px;height:43px}.calc-publisher-mark svg{width:43px;height:43px}.calc-publisher-header{padding-left:43px;min-height:40px;gap:5px}.calc-publisher-identity{gap:5px 7px}.calc-publisher .calc-publisher-name{font-size:12px}.calc-publisher .calc-publisher-label{font-size:8px;letter-spacing:.06em}.calc-publisher .calc-publisher-description{font-size:11px;line-height:1.7;margin-top:9px}.calc-publisher-updated{padding:2px 6px;font-size:9px}}
@media(forced-colors:active){.calc-publisher{border:1px solid CanvasText}.calc-publisher:before{background:CanvasText}}
@media print{.calc-publisher{display:none!important}}

/* Related calculators: isolated navigation cards; existing page styles unchanged. */
.calc-related{max-width:1080px;margin:26px auto 0;padding-top:22px;border-top:1px solid var(--border)}
.calc-related .calc-related-heading{display:flex;align-items:center;gap:10px;margin:0 0 15px;font-size:18px;line-height:1.4;font-weight:600;letter-spacing:-.4px;color:var(--text)}
.calc-related-heading:before{content:'';width:4px;height:20px;flex:none;border-radius:3px;background:var(--accent)}
.calc-related-list{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0}
.calc-related-list>li{display:flex;min-width:0;flex:1 1 220px;margin:0;padding:0}

.calc-related .calc-related-card{display:grid;grid-template-columns:42px minmax(0,1fr);align-items:center;gap:10px;padding:12px;width:100%;min-width:0;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);text-decoration:none;transition:border-color .18s,background-color .18s}
.calc-related .calc-related-card:hover{border-color:var(--accent);background:var(--ui-results,#20252c);text-decoration:none}
.calc-related .calc-related-card:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.calc-related .calc-related-card:active{background:var(--ui-selected,#303640)}
.calc-related-art{display:flex;align-items:center;justify-content:center;min-width:0}
.calc-related-art img{display:block;width:42px;max-width:100%;height:42px;object-fit:contain}
.calc-related-copy{display:grid;grid-template-columns:minmax(0,1fr) 13px;align-items:center;column-gap:8px;row-gap:4px;min-width:0}
.calc-related .calc-related-card .calc-related-title{grid-column:1;font-size:12px;font-weight:500;line-height:1.5;letter-spacing:-.15px;margin:0;color:var(--text);overflow-wrap:break-word}
.calc-related .calc-related-card .calc-related-description{grid-column:1;font-size:11px;line-height:1.55;margin:0;color:var(--muted)}
.calc-related-arrow{display:grid;place-items:center;grid-column:2;grid-row:1 / span 2;align-self:center;width:13px;height:18px;color:var(--accent)}
.calc-related-arrow svg{width:13px;height:13px}
.calc-related-card:hover .calc-related-arrow{color:var(--text)}

@media(max-width:600px){.calc-related{margin-top:22px;padding-top:19px}.calc-related .calc-related-heading{font-size:16px;margin-bottom:12px}.calc-related-list{gap:7px}.calc-related-list>li,.calc-related-list>li:nth-child(n+4){flex-basis:100%}.calc-related .calc-related-card{grid-template-columns:36px minmax(0,1fr);padding:10px;gap:9px}.calc-related-art img{width:36px;height:36px}.calc-related-copy{row-gap:3px}}
@media(prefers-reduced-motion:reduce){.calc-related .calc-related-card{transition:none}}
@media print{.calc-related{display:none!important}}



/* Section navigation matches the approved Gravel calculator. */
.nx-page .nx-nav{position:static;display:flex;flex-direction:row;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px 16px;border:0;padding:20px 0 25px;margin-bottom:5px}
.nx-page .nx-nav strong{font-size:10px;font-weight:500;color:var(--muted);margin:0 7px 0 0}
.nx-page .nx-nav a{font-size:11px;line-height:1.5;padding:8px 11px;border:1px solid var(--border);border-radius:6px;color:var(--nx-copy);background:var(--surface)}
.nx-page .nx-nav a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.nx-page .nx-mobile-nav{display:none}
@media(max-width:900px){.nx-page .nx-nav{gap:8px}}
@media(max-width:760px){
.nx-page .nx-nav{display:none}
.nx-page .nx-mobile-nav{display:block;margin:20px 0;background:var(--surface);border:1px solid var(--border);border-radius:9px;overflow:hidden}
.nx-page .nx-mobile-nav summary{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:48px;padding:12px 15px;list-style:none;color:var(--text);font-size:13px;font-weight:500;cursor:pointer}
.nx-page .nx-mobile-nav summary::-webkit-details-marker{display:none}
.nx-page .nx-mobile-nav summary svg{width:16px;height:16px;flex:none;color:var(--muted)}
.nx-page .nx-mobile-nav[open] summary{border-bottom:1px solid var(--border)}
.nx-page .nx-mobile-nav[open] summary svg{transform:rotate(180deg)}
.nx-page .nx-mobile-nav nav{display:flex;flex-direction:column;padding:5px 15px 7px}
.nx-page .nx-mobile-nav nav a{display:flex;align-items:center;min-height:44px;padding:10px 0;border-bottom:1px solid var(--border);color:var(--nx-copy);font-size:13px;text-decoration:none;line-height:1.5}
.nx-page .nx-mobile-nav nav a:last-child{border-bottom:0}
.nx-page .nx-mobile-nav nav a:hover,.nx-page .nx-mobile-nav summary:hover{color:var(--accent)}
}

/* Concrete calculator control surfaces and responsive column proportions. */
[data-theme=light] .nx-page{--ax-soft:#ffffff60}
.nx-options summary::-webkit-details-marker{display:none}
.nx-options summary:after{content:"+";font-size:18px;margin-left:auto;color:var(--ui-secondary,#9ca7b7)}
.nx-options[open] summary:after{content:"−"}
.nx-options summary:hover{color:var(--accent)}
.nx-page details.nx-options[open]{padding-bottom:13px}
.nx-page input,.nx-page select{color-scheme:var(--color-scheme,dark)}
.nx-page input::placeholder{color:var(--ui-placeholder,#929baa)}
.nx-page input:hover,.nx-page select:hover{border-color:var(--ui-line,#48515f)}
.nx-page input:focus,.nx-page select:focus{border-color:var(--accent)}
@media(max-width:900px) and (min-width:801px){.nx-workspace{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}}
@media(max-width:800px){.nx-workspace{grid-template-columns:minmax(0,1fr)}.nx-result{border-left:0;border-top:1px solid var(--border)}.nx-result-main strong{font-size:22px}.nx-actions button,.nx-page .ax-text-button{min-height:44px}}
@media(max-width:480px){.nx-result dd{font-size:15px}.nx-result-main{margin:10px -7px;padding:15px 9px}.nx-result-main strong{font-size:24px}}
/* Shared form-only design contract, bundled per calculator. */
.nx-page .cr-form-top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;padding-bottom:17px;border-bottom:1px solid var(--border);margin-bottom:5px}
.nx-page .cr-form-top h2{font-size:18px;line-height:1.35;letter-spacing:-.4px;font-weight:600}
.cr-unit-switch{display:flex;flex-wrap:wrap;gap:2px;padding:3px;margin:0;min-width:0;max-width:100%;border:1px solid var(--ui-line,#353c47);border-radius:6px;background:var(--ui-input,#111317)}
.nx-page .cr-unit-switch button{display:block;border:0;min-height:0;padding:5px 10px;border-radius:3px;font-size:11px;font-weight:400;line-height:1.65;background:transparent;white-space:nowrap;color:var(--ui-secondary,#aeb7c5)}
.nx-page .cr-unit-switch button[aria-pressed=true]{color:var(--text);background:var(--ui-selected,#303640)}
.nx-page .cr-example{align-self:flex-start;border:0;background:transparent;color:var(--accent);padding:4px 0;min-height:36px;font-size:12px}
.nx-page .cr-form-top .cr-example{font-size:11px;min-height:30px;padding:4px 10px;border:1px solid var(--border);border-radius:5px}
.nx-page .nx-options>.cr-detail-body{display:grid;gap:14px}.nx-page .cr-detail-body>.nx-field,.nx-page .cr-detail-body>.nx-fields{margin:0}
.nx-page .cr-detail-body>fieldset{padding:0;border:0}.nx-page .cr-detail-body>fieldset>legend{display:none}
.nx-page .nx-fields:empty{display:none}
@media(max-width:480px){.nx-page .cr-form-top{gap:12px;margin-bottom:9px}.nx-page .cr-form-top h2{font-size:16px}.nx-page .nx-options>.cr-detail-body{gap:10px}.nx-page .cr-example{min-height:44px}}
@media(forced-colors:active){.nx-page .cr-unit-switch button[aria-pressed=true]{outline:1px solid Highlight}}
/* Shape controls only: article styling is unaffected. */
main form .cc-ref-shapes{display:flex;flex-wrap:wrap;gap:6px}
main form .cc-ref-shapes button{display:inline-flex;align-items:center;gap:7px;min-height:36px;padding:7px 10px;border:1px solid var(--ui-line,#343d49);border-radius:5px;background:transparent;color:var(--ui-secondary,#9ca7b7);font-family:inherit;font-weight:500;font-size:11px;line-height:1.6;cursor:pointer}
main form .cc-ref-shapes button[aria-pressed=true]{color:var(--ui-accent-text,#f2c5be);border-color:var(--ui-accent-line,#9a665e);background:var(--ui-accent-soft,#ff786b09)}
main form .cc-ref-shapes svg{width:16px;height:16px;flex:none}
main form .cc-ref-shapes button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}