.roof-pitch-workspace{--pitch-surface:#fff;--pitch-text:#10204a;--pitch-muted:#607397;--pitch-line:#e1eaf7;--pitch-soft:#f4f7fc;--pitch-blue:#0758ff;background:radial-gradient(ellipse at 60% 0%,#f9fcff,#f2f7fd);color:var(--pitch-text);padding:18px 26px 30px}.dark .roof-pitch-workspace{--pitch-surface:#1b293e;--pitch-text:#ecf3ff;--pitch-muted:#a6bad8;--pitch-line:#344760;--pitch-soft:#213149;--pitch-blue:#8bb6ff;background:#122034}.roof-pitch-workspace button:focus-visible,.roof-pitch-workspace a:focus-visible,.roof-pitch-workspace select:focus-visible,.roof-pitch-workspace summary:focus-visible,.roof-pitch-model:focus-visible{outline:2px solid var(--pitch-blue);outline-offset:3px}.roof-pitch-workspace button:disabled{opacity:.5;cursor:not-allowed}.calculator-workspace-header{width:100%;max-width:1320px;margin:0 auto 28px}.calculator-workspace-back{display:inline-flex;align-items:center;gap:7px;border-radius:14px;background:var(--pitch-surface);color:var(--pitch-muted);font-size:12px;padding:3px 10px;margin-bottom:17px}.calculator-workspace-back svg{color:var(--pitch-blue)}.calculator-workspace-title-row{display:flex;align-items:center;gap:17px}.calculator-workspace-icon{width:63px;height:63px;border-radius:14px;background:var(--pitch-surface);border:1px solid var(--pitch-line);box-shadow:0 3px 14px #315e9910;color:#5f8eff;display:grid;place-items:center;flex-shrink:0}.calculator-workspace-title{flex:1;min-width:0}.calculator-workspace-title h1{font-size:clamp(24px,2.15vw,30px);font-weight:780;letter-spacing:-.025em;line-height:1.25}.calculator-workspace-title p{color:var(--pitch-muted);font-size:14px;margin-top:7px;line-height:1.5}.calculator-workspace-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}.calculator-workspace-actions>button{min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid #d5e0f0;border-radius:8px;padding:9px 24px;background:var(--pitch-surface);font-size:12px;font-weight:650}.calculator-toolbar-actions{display:flex;gap:8px;align-items:center}.calculator-toolbar-actions>button{border-radius:8px;background:linear-gradient(120deg,#468dff,#0550ff);color:#fff;box-shadow:0 5px 12px #0758ff25;font-size:12px;padding:0 22px}.calculator-export-menu{position:relative}.calculator-export-menu>summary{list-style:none;cursor:pointer;min-height:40px;display:grid;place-items:center;padding:0 6px;color:var(--pitch-muted)}.calculator-export-menu>summary::-webkit-details-marker{display:none}.calculator-export-menu>div{position:absolute;right:0;top:44px;z-index:30;width:190px;padding:8px;display:grid;gap:6px;border:1px solid var(--pitch-line);background:var(--pitch-surface);border-radius:10px;box-shadow:0 8px 25px #182a4420}.roof-pitch-workspace .calculator-workspace-main{padding:0;width:100%;max-width:1320px;margin:0 auto}.roof-pitch-tabs{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:18px}.roof-pitch-tabs button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 17px;min-height:35px;font-size:12px;color:var(--pitch-muted);background:#ecf2fb;border-radius:8px;white-space:nowrap}.dark .roof-pitch-tabs button{background:var(--pitch-soft)}.roof-pitch-tabs button[aria-selected=true]{color:#fff;background:linear-gradient(110deg,#4387ff,#2163ff);box-shadow:inset 0 0 0 1px #fff2;font-weight:650}.roof-pitch-grid{display:grid;grid-template-columns:.8fr 1fr;gap:15px;align-items:stretch}.roof-pitch-grid[hidden]{display:none}.pitch-panel{min-width:0;background:var(--pitch-surface);border:1px solid var(--pitch-line);border-radius:14px;padding:16px;box-shadow:0 3px 16px #315e9908}.pitch-panel-heading{display:flex;gap:13px;align-items:center;margin-bottom:12px}.pitch-panel-heading h2{font-size:22px;font-weight:750;letter-spacing:-.02em;line-height:1.3}.pitch-icon{color:var(--pitch-blue);display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;flex-shrink:0;border-radius:11px;background:linear-gradient(125deg,#dce9ff,#f5f9ff)}.dark .pitch-icon{background:#243d65}.pitch-intro{color:var(--pitch-muted);font-size:12px;line-height:1.6;margin:0}.pitch-input-panel{display:flex;flex-direction:column;padding:17px}.pitch-unit-control{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin:25px 0 23px;font-size:10px;font-weight:600}.pitch-unit-control>div{display:flex;gap:4px;padding:3px;background:var(--pitch-surface);border:1px solid #d9e3f1;border-radius:9px}.pitch-unit-control button{min-width:40px;padding:3px 10px;border-radius:7px;color:var(--pitch-muted);background:var(--pitch-soft);font-size:11px}.pitch-unit-control button[aria-pressed=true]{background:linear-gradient(120deg,#478dff,#0c54ff);color:#fff;box-shadow:0 2px 5px #1168ff30}.pitch-fields{display:grid;gap:22px;margin-bottom:20px}.pitch-fields label{font-weight:700;font-size:14px;color:var(--pitch-text)}.pitch-fields input{height:49px;font-size:20px;padding-left:16px;background:var(--pitch-surface);border-radius:10px;border-color:#d4deec;color:var(--pitch-text)}.pitch-fields input[aria-invalid=true]{border-color:#e3424c}.pitch-fields input+span{border-left:1px solid var(--pitch-line);right:0;width:44px;justify-content:center;font-size:12px}.pitch-examples{background:var(--pitch-soft);border-radius:10px;padding:15px 13px;margin-bottom:25px}.pitch-examples>div:first-child{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.pitch-examples h3{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:650}.pitch-examples>div>button{color:var(--pitch-blue);font-size:11px;display:flex;gap:4px;align-items:center}.pitch-example-buttons{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.pitch-example-buttons button{min-height:37px;border-radius:7px;border:1px solid #d6e0ef;background:var(--pitch-surface);font-size:12px;color:var(--pitch-muted)!important;justify-content:center}.pitch-example-buttons button[aria-pressed=true]{border-color:#6899ff;box-shadow:inset 0 0 10px #438aff19;color:var(--pitch-blue)!important;font-weight:700}.pitch-advanced{background:var(--pitch-soft);border-radius:10px;margin-bottom:20px}.pitch-advanced summary{display:flex;align-items:center;gap:12px;padding:20px;font-size:11px;font-weight:650;cursor:pointer;list-style:none}.pitch-advanced summary::-webkit-details-marker{display:none}.pitch-advanced summary svg:first-child{color:var(--pitch-muted)}.pitch-advanced summary svg:last-child{margin-left:auto}.pitch-advanced[open] summary svg:last-child{transform:rotate(180deg)}.pitch-advanced>div{border-top:1px solid var(--pitch-line);padding:15px;display:grid;gap:14px;font-size:12px;color:var(--pitch-muted)}.pitch-advanced label{display:flex;gap:10px;justify-content:space-between;align-items:center}.pitch-advanced select{padding:7px;border:1px solid var(--pitch-line);border-radius:7px;background:var(--pitch-surface);color:var(--pitch-text)}.pitch-advanced .pitch-checkbox{justify-content:flex-start}.pitch-advanced p{line-height:1.6;font-size:11px}.pitch-calculate{display:flex;align-items:center;justify-content:center;gap:18px;width:100%;min-height:53px;margin-top:auto;border-radius:10px;background:linear-gradient(115deg,#4a95ff,#0550ff);color:#fff;font-size:14px;font-weight:700;box-shadow:0 7px 12px #1768e629,inset 0 1px 1px #ffffff70}.pitch-output-column{display:grid;grid-template-rows:1fr auto;gap:12px;min-width:0}.pitch-visual-panel{position:relative;padding:14px 15px 4px;background:radial-gradient(ellipse at 65% 65%,var(--pitch-surface),#f8fbff);min-height:335px}.dark .pitch-visual-panel{background:radial-gradient(ellipse at 65% 65%,#29405d,var(--pitch-surface))}.pitch-visual-panel .pitch-panel-heading{gap:10px;margin-bottom:0}.pitch-visual-panel h2{font-size:14px;letter-spacing:0}.pitch-visual-panel .pitch-icon{width:34px;height:34px;border-radius:9px}.pitch-view{display:flex;align-items:center;gap:6px;margin-left:auto;padding:7px 9px;border:1px solid #d9e3f1;border-radius:8px;color:var(--pitch-blue);background:var(--pitch-surface);flex-shrink:0}.pitch-view select{font-size:11px;font-weight:600;background:transparent;color:inherit;padding:0 2px}.pitch-view option{color:var(--pitch-text);background:var(--pitch-surface)}.pitch-figure{width:100%}.roof-pitch-model{width:100%;display:block;min-height:245px;max-height:320px;touch-action:pan-y;cursor:grab;-webkit-user-select:none;-moz-user-select:none;user-select:none}.roof-pitch-model:active{cursor:grabbing}.dark .roof-pitch-model .pitch-dimension-label{fill:#b8cbea;paint-order:stroke;stroke:#213149;stroke-width:3px;stroke-linejoin:round}.pitch-model-tip{position:absolute;right:10px;bottom:10px;display:flex;gap:8px;padding:11px 12px;background:#e8f1ffed;color:#314e7d;border-radius:9px;font-size:10px;max-width:174px;pointer-events:none}.pitch-model-tip>svg{color:#1454d9;flex-shrink:0}.pitch-model-tip strong{display:block;margin-bottom:3px;color:#152b59}.pitch-model-tip span{line-height:1.6}.pitch-invalid-figure{min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;color:var(--pitch-muted);font-size:13px}.pitch-results{padding:13px 15px 15px}.pitch-results .pitch-panel-heading{margin-bottom:12px}.pitch-results .pitch-icon{width:36px;height:36px}.pitch-result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.pitch-result-tile{background:var(--pitch-soft);border-radius:9px;padding:17px 12px;display:flex;gap:12px;min-width:0;min-height:121px}.pitch-result-tile>svg{color:var(--pitch-muted);flex-shrink:0;margin-top:3px}.pitch-result-tile h3{font-size:11px;font-weight:600;line-height:1.5;white-space:nowrap}.pitch-result-tile strong{display:block;font-size:clamp(22px,2.35vw,33px);font-weight:800;letter-spacing:-.025em;color:var(--pitch-blue);margin:8px 0;white-space:nowrap}.pitch-result-tile small{display:block;font-size:10px;color:var(--pitch-muted);line-height:1.5}.pitch-category{display:flex;align-items:center;gap:12px;margin-top:13px;padding:13px 14px;border-radius:10px;background:#e7f6ee;color:#008454}.pitch-category>svg{flex-shrink:0;fill:#06996b;color:#fff}.pitch-category>div{flex:1}.pitch-category strong{font-size:12px;font-weight:650}.pitch-category p{font-size:11px;line-height:1.5;color:#487e70;margin-top:3px}.pitch-category>span{border-radius:20px;background:#caf0dc;padding:5px 10px;font-size:10px;white-space:nowrap}.pitch-category-low{background:#edf4ff;color:#2658a4}.pitch-category-low p{color:#4b6b98}.pitch-category-low>span{background:#d9e7ff}.pitch-category-steep{background:#fff3df;color:#a36618}.pitch-category-steep p{color:#8e704a}.pitch-category-steep>span{background:#ffe3ae}.pitch-invalid-note{color:#ba3441;font-size:12px;padding:12px 0 0}.pitch-knowledge-grid{display:grid;grid-template-columns:1fr 1fr 1.08fr;gap:14px;margin-top:14px}.pitch-knowledge-grid .pitch-panel{padding:14px 17px}.pitch-knowledge-grid h2{display:flex;gap:11px;align-items:center;font-size:13px;font-weight:700;margin-bottom:12px}.pitch-knowledge-grid .pitch-icon{width:31px;height:32px;border-radius:8px}.pitch-knowledge-grid p{font-size:12px;color:var(--pitch-muted);margin-top:7px;line-height:1.6}.pitch-knowledge-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}.pitch-knowledge-grid li{display:flex;gap:13px;align-items:center;color:var(--pitch-muted);font-size:12px;line-height:1.45}.pitch-knowledge-grid li svg{color:#00a365;stroke-width:3;flex-shrink:0}.pitch-material-banner{display:flex;gap:23px;align-items:center;margin-top:17px;padding:10px 12px;border:1px solid var(--pitch-line);border-radius:13px;background:var(--pitch-surface);box-shadow:0 4px 17px #315e9907}.pitch-material-banner img{width:105px;height:61px;-o-object-fit:cover;object-fit:cover;border-radius:7px}.pitch-material-banner>div{flex:1}.pitch-material-banner h2{font-size:14px;font-weight:700}.pitch-material-banner p{font-size:12px;color:var(--pitch-muted);margin-top:6px;line-height:1.5}.pitch-material-banner a,.pitch-inline-action{display:inline-flex;align-items:center;justify-content:center;gap:12px;border:1px solid #cdddf7;padding:10px 17px;border-radius:7px;color:var(--pitch-blue);font-size:12px;font-weight:650}.pitch-reading{padding:28px;min-height:370px}.pitch-reading h2{font-size:22px;font-weight:750;margin-bottom:17px}.pitch-reading p{color:var(--pitch-muted);line-height:1.8;font-size:14px;max-width:800px;margin:15px 0}.pitch-reading dl{display:grid;gap:16px;margin-top:25px}.pitch-reading dt{font-size:14px;font-weight:700;margin-bottom:5px}.pitch-reading dd{font-size:13px;color:var(--pitch-muted)}.pitch-reading>a{display:flex;align-items:center;gap:10px;width:-moz-fit-content;width:fit-content;color:var(--pitch-blue);margin:20px 0;font-size:14px}.pitch-example-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:15px;margin-top:23px}.pitch-example-list button{display:flex;gap:15px;align-items:center;text-align:left;border:1px solid var(--pitch-line);border-radius:10px;padding:18px}.pitch-example-list button>span{flex:1}.pitch-example-list strong{display:block;font-size:13px}.pitch-example-list small{display:block;font-size:12px;color:var(--pitch-muted);margin-top:5px}@media(max-width:1200px){.calculator-workspace-title-row{flex-wrap:wrap}.calculator-workspace-title{flex-basis:calc(100% - 90px)}.calculator-workspace-actions{margin-left:auto}.calculator-workspace-header{margin-bottom:22px}.roof-pitch-workspace{padding:16px 20px 30px}.pitch-result-tile{gap:8px;padding:14px 10px;flex-direction:column}.pitch-result-tile strong{font-size:28px;margin:5px 0}.pitch-result-tile h3{white-space:normal}.pitch-visual-panel h2{font-size:12px}.pitch-model-tip{max-width:155px}.pitch-category{flex-wrap:wrap}.pitch-category>span{margin-left:34px}.pitch-knowledge-grid{gap:10px}}@media(max-width:850px){.roof-pitch-grid{grid-template-columns:1fr}.pitch-output-column{grid-template-rows:auto auto}.pitch-result-tile{flex-direction:row;justify-content:center;gap:12px}.pitch-result-tile h3{font-size:12px}.pitch-result-tile strong{font-size:31px}.pitch-knowledge-grid{grid-template-columns:1fr}.pitch-visual-panel{min-height:350px}.pitch-visual-panel h2{font-size:14px}.pitch-material-banner{flex-wrap:wrap;gap:13px}.pitch-material-banner a{margin-left:auto}.pitch-advanced{margin-bottom:18px}}@media(max-width:520px){.roof-pitch-workspace{padding:12px 10px 25px}.calculator-workspace-icon{width:46px;height:46px;border-radius:11px}.calculator-workspace-icon svg{width:31px}.calculator-workspace-title-row{gap:12px}.calculator-workspace-title{flex-basis:calc(100% - 65px)}.calculator-workspace-title h1{font-size:21px}.calculator-workspace-title p{font-size:12px}.calculator-workspace-actions{gap:7px;width:100%;justify-content:flex-start}.calculator-workspace-actions>button{padding:8px 12px;min-height:40px;font-size:11px;gap:6px}.calculator-toolbar-actions{gap:1px}.calculator-toolbar-actions>button{padding:0 10px;font-size:11px;height:40px}.calculator-workspace-actions svg{width:15px}.calculator-workspace-header{margin-bottom:20px}.roof-pitch-tabs{gap:6px;margin-bottom:13px}.roof-pitch-tabs button{padding:8px 10px;font-size:11px;min-height:39px}.pitch-panel-heading h2{font-size:20px}.pitch-input-panel{padding:15px}.pitch-unit-control{margin:18px 0}.pitch-example-buttons{gap:5px}.pitch-examples{padding:13px 10px;margin-bottom:18px}.pitch-example-buttons button{min-height:40px;font-size:11px}.pitch-visual-panel{padding:12px 9px 44px;min-height:300px}.pitch-visual-panel h2{font-size:12px}.pitch-view{gap:3px;padding:7px 5px}.pitch-view svg{display:none}.pitch-view select{font-size:10px;max-width:87px}.pitch-visual-panel .pitch-panel-heading{gap:6px}.roof-pitch-model{min-height:210px}.pitch-model-tip{padding:7px 10px;max-width:none;bottom:8px;right:9px}.pitch-model-tip span br{display:none}.pitch-model-tip strong{display:inline;margin-right:8px}.pitch-result-grid{gap:6px}.pitch-results{padding:12px 9px}.pitch-result-tile{flex-direction:column;gap:5px;padding:12px 8px;justify-content:flex-start}.pitch-result-tile h3{font-size:10px;min-height:30px}.pitch-result-tile strong{font-size:24px}.pitch-result-tile small{font-size:9px}.pitch-category{padding:12px 10px;gap:9px}.pitch-category p{font-size:10px}.pitch-category>span{margin-left:30px}.pitch-material-banner img{width:70px;height:60px}.pitch-material-banner h2{font-size:13px}.pitch-material-banner p{font-size:11px}.pitch-material-banner a{width:100%;font-size:11px}.pitch-reading{padding:20px}.pitch-reading h2{font-size:20px}.pitch-reading p{font-size:13px}.pitch-advanced summary{padding:17px 14px}}@media print{body:has(.roof-pitch-workspace) *{visibility:hidden}body:has(.roof-pitch-workspace) .roof-pitch-workspace,body:has(.roof-pitch-workspace) .roof-pitch-workspace *{visibility:visible}.roof-pitch-workspace{position:absolute;top:0;right:0;bottom:0;left:0;padding:10px;background:#fff;color:#10204a;--pitch-surface:#fff;--pitch-text:#10204a;--pitch-muted:#506485;--pitch-line:#d9e3f1;--pitch-soft:#f5f7fa}.calculator-workspace-actions,.calculator-workspace-back,.roof-pitch-tabs,.pitch-examples,.pitch-advanced,.pitch-calculate,.pitch-model-tip,.pitch-material-banner{display:none!important}.roof-pitch-grid{grid-template-columns:.8fr 1fr}.pitch-panel{-moz-column-break-inside:avoid;break-inside:avoid;box-shadow:none}.pitch-knowledge-grid{grid-template-columns:repeat(3,1fr)}.calculator-workspace-header{margin-bottom:20px}.pitch-input-panel{justify-content:flex-start}.pitch-result-tile strong{font-size:22px}}