#power403{--ink:#102858;--text:#46586f;--muted:#65778c;--line:#ccdef3;--paper:#fff;--soft:#f5f8fd;--blue:#0867ff;color:var(--text);background:var(--paper);font:14px/1.5 Arial,sans-serif}#power403 *{box-sizing:border-box}#power403 h2{font-size:19px;line-height:1.25;color:var(--ink);margin:0 0 13px}#power403 p{margin:7px 0 12px}#power403 .subtitle{font-size:20px;font-weight:600;color:var(--ink);margin:0 0 6px}#power403 .intro{font-size:13px;margin-bottom:15px}#power403 .panel{padding:16px;border:1px solid var(--line);border-radius:7px;background:var(--paper);min-width:0}#power403 .layout,#power403 .twocol{display:grid;grid-template-columns:minmax(0,.485fr) minmax(0,.515fr);gap:12px}#power403 .twocol{margin-top:12px}#power403 .presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:13px}#power403 button,#power403 input{font:inherit}#power403 button{cursor:pointer;touch-action:manipulation}#power403 .preset{position:relative;height:104px;min-width:0;display:flex;align-items:center;text-align:left;gap:8px;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:8px 9px;color:var(--ink)}#power403 .preset.selected{background:#edf6ff;border-color:#428dff;box-shadow:inset 0 0 0 1px #428dff}#power403 .preset>.art{width:57%;flex:0 1 57%;height:86px;min-width:0}#power403 .preset>span:last-child{min-width:0;flex:1}#power403 .preset strong{display:block;font-size:14px;line-height:1.25;color:var(--ink)}#power403 .preset small{display:block;font-size:11px;color:var(--muted);margin-top:5px}#power403 .radio{position:absolute;top:9px;left:9px;width:12px;height:12px;border:1px solid #7493b4;border-radius:50%;z-index:3}#power403 .selected .radio{border:3px solid #0867ff;background:#fff}#power403 .controls{display:flex;align-items:stretch;gap:10px;margin-bottom:19px}#power403 .segmented{display:flex;flex:1;min-width:0;border:1px solid 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small{display:block;font-size:10px;color:var(--muted);margin-top:3px}#power403 .small-print{font-size:10px;text-align:center;color:var(--muted);margin:9px 0 0}#power403 .work-breakdown{padding:0 11px 5px}#power403 .work-bar{height:10px;display:flex;border-radius:6px;overflow:hidden;background:var(--line)}#power403 .work-bar span{display:block;height:100%}#power403 .work-key{display:flex;flex-wrap:wrap;gap:8px;font-size:10px;margin-top:8px}#power403 .work-key i{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:4px}#power403 [hidden]{display:none!important}
.power403-related-art{position:relative;display:block;width:110px;height:90px;flex:0 0 110px;isolation:isolate}.power403-related-art>.st403-wm{position:absolute!important;z-index:0;left:5px!important;top:35px!important;width:100px!important;height:auto!important;max-height:30px!important;object-fit:contain!important;opacity:.12}.power403-related-photo{position:relative;z-index:1;width:110px!important;height:90px!important;object-fit:contain!important}
html.st-master-dark #power403{--ink:#e1edff;--text:#c3d0de;--muted:#aabed4;--line:#35526f;--paper:#112438;--soft:#152e47;background:#0b1b2c}html.st-master-dark #power403 .preset.selected{background:#1b3a59;border-color:#6fa8fc;box-shadow:inset 0 0 0 1px #6fa8fc}html.st-master-dark #power403 .field input{color-scheme:dark}html.st-master-dark #power403 .form-actions .primary,html.st-master-dark #power403 .actions button:first-child{background:#176bdf;color:#fff}html.st-master-dark #power403 .form-actions button:not(.primary),html.st-master-dark #power403 .actions button:last-child{color:#a5ccff}html.st-master-dark #power403 .result:not(.pending){background:#153d33;border-color:#397d68;color:#c6f2df}html.st-master-dark #power403 .error{color:#ffb7c4}html.st-master-dark #power403 .art .day{display:none}html.st-master-dark #power403 .art .night{display:block}html.st-master-dark #power403 .art .wm{opacity:.12}html.st-master-dark #power403 .photograph .wm,html.st-master-dark #power403 .landscape .wm{opacity:.3}html.st-master-dark .power403-related-art>.st403-wm{filter:brightness(0) invert(1);opacity:.13}
@media(max-width:1050px){#power403 .preset strong{font-size:12px}#power403 .preset small{font-size:10px}#power403 .input-row{grid-template-columns:26px minmax(83px,.9fr) minmax(120px,1.15fr);gap:8px}#power403 .controls{gap:7px}#power403 .segmented button{font-size:11px;padding:9px 5px}#power403 .metrics b{font-size:17px}#power403 .metrics.two b{font-size:20px}#power403 .result>strong{font-size:43px}#power403 .explainer{gap:8px}#power403 .explainer>div{gap:7px}}
@media(max-width:760px){#power403 .layout,#power403 .twocol{grid-template-columns:1fr}#power403 .source-list{grid-template-columns:1fr}#power403 .explainer{grid-template-columns:1fr}#power403 .explainer>div+div{border-left:0;border-top:1px solid var(--line);padding:9px 0 0}#power403 .result>strong{font-size:48px}}
@media(max-width:520px){#power403 .panel{padding:13px}#power403 .presets{grid-template-columns:1fr;gap:8px}#power403 .preset{padding:8px 16px;gap:12px}#power403 .preset>.art{width:43%;flex-basis:43%}#power403 .preset strong{font-size:15px}#power403 .preset small{font-size:12px}#power403 .input-row{grid-template-columns:25px minmax(82px,.8fr) minmax(125px,1.2fr);gap:7px}#power403 .step-circle{width:25px;height:25px;flex-basis:25px}#power403 .field input{padding:7px 6px;font-size:14px}#power403 .field>span{font-size:10px;padding:0 6px}#power403 .controls{gap:7px}#power403 .segmented button{font-size:11px;padding:9px 5px}#power403 .actions button{font-size:11px;padding:9px 5px}#power403 .assumptions summary small{font-size:10px}#power403 .sourcebrand{font-size:16px}}
@media(max-width:370px){#power403 .input-row{grid-template-columns:24px minmax(70px,.85fr) minmax(115px,1.15fr);gap:5px}#power403 label{font-size:11px}#power403 .metrics b{font-size:16px}#power403 .metrics.two b{font-size:19px}#power403 .controls{flex-wrap:wrap}#power403 .controls .segmented{flex:1 1 100%}#power403 .assumption-inputs{grid-template-columns:1fr}}



/* W402 — cohesive educational photo pair; no marks in top selectors. */
#power403 .presets .wm{display:none!important}
#power403 .climb{padding:16px}
#power403 .climb-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;align-items:start}
#power403 .photograph{border-radius:6px;aspect-ratio:3/2;min-height:0;align-self:start;background:var(--soft)}
#power403 .photograph .subject{display:block;width:100%;height:auto;max-height:none;aspect-ratio:3/2;object-fit:contain}
#power403 .photograph .wm,#power403 .landscape .wm{width:110px;max-width:32%;height:auto;max-height:20px;right:9px;bottom:9px;top:auto;left:auto;opacity:.22;filter:drop-shadow(0 1px 2px rgba(255,255,255,.9))}
#power403 .climb-review{display:flex;flex-direction:column;justify-content:space-between;aspect-ratio:3/2;min-width:0;gap:10px;align-self:start}
#power403 .climb-top{display:flex;flex-direction:column;gap:8px;margin:0}
#power403 .climb-top>small{font-size:10px;color:var(--muted);line-height:1.3;text-align:left}
#power403 .climb-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-width:none;margin:0}
#power403 .climb-metrics>div{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:58px;padding:7px 9px;border:1px solid var(--line);border-radius:5px;background:var(--soft);color:var(--ink)}
#power403 .climb-metrics b{display:block;font-size:24px;line-height:1.15;overflow-wrap:anywhere}
#power403 .climb-metrics span{display:block;font-size:11px;color:var(--muted);margin-top:3px}
#power403 .landscape{width:100%;height:auto;aspect-ratio:1933/814;border-radius:6px;background:var(--soft)}
#power403 .landscape .subject{display:block;width:100%;height:auto;max-height:none;aspect-ratio:1933/814;object-fit:contain}
#power403 .climb-caption{padding-top:10px;margin:12px 0 0;font-size:11px;line-height:1.55;color:var(--muted);border-top:1px solid var(--line)}
html.st-master-dark #power403 .photograph .wm,html.st-master-dark #power403 .landscape .wm{opacity:.38;filter:drop-shadow(0 1px 2px rgba(0,0,0,.65))}
@media(max-width:1050px){#power403 .climb-grid{gap:12px}#power403 .climb-review{gap:8px}#power403 .climb-top{gap:7px}#power403 .climb-metrics>div{min-height:50px;padding:6px}#power403 .climb-metrics b{font-size:21px}}
@media(max-width:760px){#power403 .climb-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}#power403 .climb-top>small{font-size:9px}#power403 .climb-metrics{gap:7px}#power403 .climb-metrics>div{min-height:45px;padding:5px}#power403 .climb-metrics b{font-size:18px}#power403 .climb-metrics span{font-size:10px}#power403 .photograph .wm,#power403 .landscape .wm{width:90px;right:6px;bottom:6px}}
@media(max-width:600px){#power403 .climb{padding:13px}#power403 .climb-grid{grid-template-columns:1fr;gap:12px}#power403 .climb-review{gap:9px;aspect-ratio:auto}#power403 .climb-top>small{font-size:10px}#power403 .climb-metrics{gap:10px}#power403 .climb-metrics>div{min-height:56px;padding:8px}#power403 .climb-metrics b{font-size:23px}#power403 .climb-metrics span{font-size:11px}#power403 .climb-caption{margin-top:10px;padding-top:9px}}
#power403 .controls{justify-content:flex-end}#power403 .split-title{margin-top:18px}#power403 .power-bar{height:22px;display:flex;gap:2px;border-radius:4px;overflow:hidden;margin:8px 0 12px;background:var(--soft)}#power403 .power-bar.signed{height:auto;display:block;background:none}#power403 .signed-row{display:grid;grid-template-columns:70px 1fr 1fr;gap:1px;margin:4px 0;font-size:11px}#power403 .signed-row .neg{text-align:right;border-right:1px solid var(--muted)}#power403 .signed-row i{display:inline-block;height:12px;vertical-align:middle}#power403 .power-legend{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;font-size:11px}#power403 .power-legend b{display:block;font-size:22px;color:var(--ink)}#power403 .dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:4px}#power403 .air{background:#0785ff}#power403 .roll{background:#24ab72}#power403 .climb{background:#f39218}#power403 .forces{margin-top:12px}#power403 .force-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:12px}#power403 .force-photo{position:relative;overflow:hidden;border-radius:5px;min-width:0}#power403 .force-photo>.art{height:330px}#power403 .force-photo .subject{width:100%;height:100%;object-fit:cover}#power403 .flow{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}#power403 .force-label{position:absolute;background:rgba(255,255,255,.83);color:#102858;padding:4px 8px;border-radius:4px;font-size:12px;line-height:1.3}#power403 .force-label b{display:block;font-size:20px}#power403 .air-label{left:3%;top:30%}#power403 .rolling-label{left:3%;bottom:12%}#power403 .gravity-label{right:3%;top:52%}#power403 .force-photo .wm{position:absolute;width:34%;height:auto;right:12px;bottom:12px;opacity:.27;z-index:4;object-fit:contain}#power403 .comparison{padding:10px;background:var(--paper);border:1px solid var(--line);border-radius:5px}#power403 .comparison h2{font-size:16px}#power403 .comparison h2 small{display:block;font-size:12px;color:var(--muted)}#power403 .compare-row{display:flex;gap:8px;align-items:center;margin:12px 0}#power403 .compare-row .art{width:65px;height:58px;flex-shrink:0}#power403 .compare-row>div:last-child{flex:1;min-width:0}#power403 .compare-row b{float:right;color:var(--ink)}#power403 .compare-track{height:12px;background:var(--line);margin-top:6px;border-radius:3px;overflow:hidden}#power403 .compare-track i{display:block;height:100%;background:#429bff;transition:width .2s}#power403 .related403{margin-top:12px}#power403 .related403>div{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}#power403 .related403 a{display:flex;align-items:center;border:1px solid var(--line);border-radius:5px;padding:8px;color:var(--ink);text-decoration:none;font-size:12px}#power403 .related403 img{width:30%;height:70px;object-fit:contain;margin-right:8px}#power403 .related403 small{display:block;color:var(--muted)}#power403 .preset .subject{object-fit:contain}#power403 button:focus-visible,#power403 input:focus-visible,#power403 summary:focus-visible,#power403 a:focus-visible{outline:3px solid #008cff;outline-offset:3px}#power403 .force-photo .wm.night{display:none}html[data-theme=dark] #power403 .force-photo .wm.day,html.dark #power403 .force-photo .wm.day,body.dark-mode #power403 .force-photo .wm.day{display:none}html[data-theme=dark] #power403 .force-photo .wm.night,html.dark #power403 .force-photo .wm.night,body.dark-mode #power403 .force-photo .wm.night{display:block}@media(max-width:700px){#power403 .force-grid{grid-template-columns:1fr}#power403 .force-photo>.art{height:280px}#power403 .related403>div{grid-template-columns:1fr}#power403 .related403 img{width:75px}#power403 .power-legend{font-size:10px}#power403 .preset{height:auto;min-height:115px;flex-direction:column;padding-top:16px}#power403 .preset>.art{width:100%;height:65px;flex:0 0 65px}#power403 .preset strong{font-size:12px}#power403 .preset small{font-size:10px}#power403 .force-label{font-size:10px}}
#power403 .art{position:relative;overflow:hidden}#power403 .preset{border-radius:3px}#power403 .panel{border-radius:3px}#power403{--ink:#080f58;--text:#263e7a;--muted:#6677a5}


/* W404: independent transparent assets, intrinsic proportions, full corner watermark. */
#power403 .art>.subject,#power403 .preset .art>.subject,#power403 .force-photo .art>.subject{position:static;display:block;width:100%;height:100%;max-width:100%;object-fit:contain;object-position:center;transform:none;left:auto;top:auto}
#power403 .preset{height:116px;padding:10px 8px;gap:6px}
#power403 .preset>.art{flex:0 1 55%;width:55%;height:96px;background:transparent}
#power403 .compare-row .art{width:76px;height:62px;flex:0 0 76px;background:transparent}
#power403 .force-grid{grid-template-columns:minmax(0,1.75fr) minmax(0,1fr);align-items:stretch}
#power403 .force-photo>.art{height:auto;aspect-ratio:2.1/1;width:100%;background:transparent}
#power403 .force-photo .art>.subject{object-fit:cover;object-position:center}
#power403 .force-photo .art>.wm{position:absolute!important;left:auto!important;top:auto!important;right:12px!important;bottom:10px!important;width:34%!important;height:auto!important;max-height:none!important;opacity:.24!important;z-index:5!important;object-fit:contain!important;pointer-events:none}
#power403 .force-label{padding:0;background:transparent;box-shadow:none;border:0;color:#08164b;font-weight:700;font-size:12px;line-height:1.2;text-shadow:0 0 6px #fff,0 0 3px #fff}
#power403 .force-label b{font-size:20px}
#power403 .air-label{top:18%;left:5%}
#power403 .rolling-label{bottom:6%;left:5%}
#power403 .gravity-label{right:5%;top:54%;color:#fff;text-shadow:0 1px 4px #173e21}
#power403 .air-label:after{content:'';display:block;position:absolute;left:100%;top:40%;width:65px;height:4px;background:#00a8ff;clip-path:polygon(0 20%,80% 20%,80% 0,100% 50%,80% 100%,80% 80%,0 80%)}
#power403 .comparison{padding:10px}
#power403 .comparison h2 small{display:inline;font-size:inherit;color:inherit}
#power403 .compare-row{margin:9px 0}
@media(max-width:700px){#power403 .force-grid{grid-template-columns:1fr}#power403 .preset{height:auto;min-height:140px;padding:16px 6px 8px}#power403 .preset>.art{height:78px;flex:0 0 78px;width:100%}#power403 .force-photo>.art{height:auto;aspect-ratio:2.1/1}#power403 .force-label{font-size:10px}#power403 .force-label b{font-size:15px}#power403 .force-photo .art>.wm{width:35%!important;right:8px!important;bottom:7px!important}#power403 .air-label:after{width:35px}}