.source-stack,.tool-rows{display:grid;gap:8px}.source-stack span,.tool-rows span{font-size:14px;line-height:1.5;padding:12px 14px;border:1px solid #6b7c61}.source-stack span:last-child{background:var(--lime);color:var(--ink);border-color:var(--lime)}.driver-art{background:#26392c}.diagnostic-art{background:#253b46}.test-tags,.power-equation{display:flex;gap:9px;flex-wrap:wrap;align-items:center}.test-tags span,.power-equation span{padding:12px;border:1px solid #889b95;font:600 19px 'Courier New',monospace}.test-tags span:nth-child(2){color:var(--lime);border-color:var(--lime)}.tool-art{background:#e0e6da;color:var(--ink)}.tool-art .mono{color:#465c3c}.tool-art small{color:#52634a}.tool-rows{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.tool-rows span{font-size:12px;padding:11px 8px;text-align:center}.psu-art{background:#303b2b}.license-note{padding-top:15px;border-top:1px solid #bac5ad}.license-note strong{color:var(--ink)}.psu-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:32px;align-items:start}.psu-layout fieldset{border:0;border-top:1px solid var(--line);margin:0 0 28px;padding:25px 0 0;min-width:0}.psu-layout legend{font-size:16px;font-weight:600;line-height:1.5;padding:0 10px 0 0}.psu-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 18px}.psu-field{display:flex;flex-direction:column;gap:9px;min-width:0}.psu-field>span{font-size:14px;line-height:1.5;font-weight:550}.psu-field input{width:100%;font:600 20px 'Courier New',monospace;color:var(--ink);padding:14px 16px;border:1px solid #a8b29f;border-radius:4px;background:#fffdf7;box-sizing:border-box;min-height:50px}.psu-field input:focus-visible{outline:2px solid var(--red);outline-offset:3px}.psu-field small{font-size:12px;line-height:1.7;color:var(--muted)}.psu-layout .article-actions{display:flex;gap:22px;flex-wrap:wrap;align-items:center}.psu-layout form>.small{line-height:1.8;font-size:12px;margin-top:22px}.psu-output{padding:28px;background:#e5eccf;border:1px solid #b1bfa0;border-radius:4px;position:sticky;top:95px;min-width:0}.psu-nominal{display:block;font-size:clamp(40px,5vw,68px);line-height:1.1;letter-spacing:-3px;font-weight:650;margin-top:20px;color:var(--ink)}.psu-caption{margin:7px 0 27px;font-size:14px;color:#52634a}.psu-totals{font-size:13px;line-height:1.6;border-top:1px solid #b8c5a4;margin:0 0 24px}.psu-totals>div{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid #b8c5a4}.psu-totals dd{margin:0;font-weight:650;white-space:nowrap}.psu-breakdown{padding:0;list-style:none;margin:0}.psu-breakdown li{position:relative;display:flex;justify-content:space-between;gap:12px;padding:10px 0 14px;margin-bottom:4px;font-size:12px;line-height:1.5}.psu-bar{position:absolute;bottom:0;left:0;height:4px;background:#365e57;max-width:100%;border-radius:2px}.psu-bar-1{background:#b65034}.psu-bar-2{background:#667737}.psu-bar-3{background:#6882a1}.psu-bar-4{background:#82765d}.psu-output .reading-note{font-size:12px}.psu-output details{border-top:1px solid #b8c5a4;margin-top:23px;padding-top:17px}.psu-output summary{font-size:13px;cursor:pointer;line-height:1.6}.formula-card{padding:30px;background:var(--ink);color:var(--paper);border-radius:4px}.formula-card>.mono{font-size:11px;color:var(--lime)}.formula-card>p{font-size:19px;line-height:1.8;max-width:900px}.formula-card small{font-size:12px;line-height:1.8;color:#c7d1bb;display:block}.psu-output[hidden],#psu-result[hidden],#psu-error[hidden]{display:none}@media(max-width:900px){.psu-layout{grid-template-columns:minmax(0,1fr);gap:25px}.psu-output{position:static;max-width:none}.psu-nominal{font-size:64px}}@media(max-width:600px){.psu-fields{gap:22px 14px}.psu-field>span{font-size:13px}.psu-field input{font-size:19px;padding:12px}.psu-field small{font-size:11px}.psu-output,.formula-card{padding:23px}.formula-card>p{font-size:16px}.psu-nominal{font-size:57px}.source-stack span{font-size:13px}.test-tags span,.power-equation span{font-size:17px;padding:11px}.tool-rows span{font-size:11px;padding:10px 6px}}@media(max-width:380px){.psu-fields{grid-template-columns:minmax(0,1fr)}}

.keyboard-art{background:#dce8ef;color:#273c48}.keyboard-art .mono,.keyboard-art small{color:#4a626d}.keyboard-art strong{font-family:'Courier New',monospace;white-space:nowrap}.keyboard-art strong>span{font-size:32px;color:#7a918f}.keyboard-mini{height:100px;background:#c5d5dc;display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:10px;border-radius:4px}.keyboard-mini i{border-radius:3px;background:#f8f8f1;border:1px solid #91a9b1}.keyboard-mini i:last-child{background:#d6e6b7;border-color:#a0b77e}.shortcut-demo-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.5fr);gap:30px;margin-top:28px;align-items:start}.shortcut-controls{display:grid;grid-template-columns:1fr;gap:12px}.shortcut-button{border:1px solid #aab4a0;border-radius:4px;padding:18px;text-align:left;background:#e8eae2;color:var(--ink);cursor:pointer;font-size:16px}.shortcut-button>span:last-child{display:block;font-size:12px;line-height:1.6;margin-top:10px;color:var(--muted)}.shortcut-button[aria-pressed=true]{background:#e1ebca;border-color:#8ca66b}.shortcut-controls>.text-link{justify-self:start;margin-top:10px}.reading-article kbd{font:600 14px 'Courier New',monospace;display:inline-block;border:1px solid #a7b29c;border-bottom-width:3px;border-radius:4px;padding:5px 8px;background:#f8f8f0;white-space:nowrap;line-height:1.2;color:var(--ink)}.window-demo{height:340px;position:relative;overflow:hidden;background:#d3dfdf;border:1px solid #9caca5;border-radius:6px}.desktop-mark{position:absolute;right:18px;top:17px;font:9px 'Courier New',monospace;letter-spacing:1px;color:#637872}.demo-window{position:absolute;top:60px;left:15%;width:70%;height:200px;background:#fffdf7;border:1px solid #8c9f94;border-radius:5px;box-shadow:0 8px 18px #30433b22;overflow:hidden;transition:top .3s,left .3s,width .3s,height .3s,opacity .2s}.demo-title{height:33px;padding:0 12px;background:#344b40;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:10px;white-space:nowrap}.demo-document{padding:24px;display:grid;gap:13px}.demo-document span{height:9px;background:#dce6d4;border-radius:2px}.demo-document span:first-child{width:60%;background:#bccda5;height:14px;margin-bottom:8px}.demo-document span:last-child{width:75%}.demo-taskbar{position:absolute;inset:auto 0 0;height:36px;background:#abbeb8;display:flex;align-items:center;justify-content:center;gap:18px;font-size:20px}.demo-task-icon{background:#f2f5e9;color:#395442;font:600 16px 'Courier New',monospace;padding:3px 8px;border-radius:3px}.window-demo[data-position=left] .demo-window{top:12px;left:12px;width:calc(50% - 18px);height:calc(100% - 60px)}.window-demo[data-position=right] .demo-window{top:12px;left:calc(50% + 6px);width:calc(50% - 18px);height:calc(100% - 60px)}.window-demo[data-position=max] .demo-window{top:8px;left:8px;width:calc(100% - 16px);height:calc(100% - 52px)}.window-demo[data-position=min] .demo-window{top:calc(100% - 32px);left:47%;width:35px;height:20px;opacity:0}.shortcut-status{font-size:14px;line-height:1.8;padding:18px 20px;background:#e7ecd9;border-radius:4px;min-height:80px;margin:15px 0 0}.keyboard-guide{background:#dce8ef}@media(max-width:800px){.shortcut-demo-grid{grid-template-columns:minmax(0,1fr)}.shortcut-controls{grid-template-columns:repeat(2,minmax(0,1fr))}.shortcut-controls>.text-link{grid-column:1/-1}.window-demo{height:300px}}@media(max-width:420px){.window-demo{height:270px}.demo-window{height:165px}.demo-document{padding:18px}.shortcut-button{padding:14px}.reading-article kbd{font-size:12px;padding:5px 6px}.demo-title{font-size:9px;padding:0 8px}.keyboard-art strong{font-size:37px}}@media(prefers-reduced-motion:reduce){.demo-window{transition:none}}
.psu-layout .psu-presets{background:#e8eddf;padding:22px;border:1px solid #c2ccb5;border-radius:4px}.psu-presets>.reading-note{margin:0 0 18px}.psu-preset{min-width:0}.psu-preset>label{display:block;font-size:12px;font-weight:600;line-height:1.5;margin-bottom:9px}.psu-preset select{width:100%;max-width:100%;min-width:0;padding:13px 30px 13px 11px;border:1px solid #bdc7b5;border-radius:3px;background:#fffef7;color:var(--ink);font:12px/1.5 Arial,sans-serif}.psu-preset select:focus-visible{outline:2px solid var(--red);outline-offset:2px}.psu-preset>.reading-note{font-size:11px;line-height:1.7;margin:11px 0 0;overflow-wrap:anywhere}.psu-preset>.reading-note a{text-decoration:underline;text-underline-offset:3px}.psu-presets>.small{margin-bottom:0}@media(max-width:800px){.psu-presets>.psu-fields{grid-template-columns:1fr}.psu-preset select{font-size:13px;min-height:48px}}