:root{--blue:#193e82;--deep:#102a55;--orange:#d97827;--ink:#20324d;--muted:#4e6079;--line:#ccd8e7;--wash:#f0f5fa;--warn:#793704;--focus:#8b3e06}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;color:var(--ink);background:#fff;font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;line-height:1.85;font-size:17px}a{color:var(--blue);text-underline-offset:4px}button,input,select{font:inherit}button,select{cursor:pointer}button,a.primary{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--blue);border-radius:9px;background:#fff;color:var(--blue);min-height:46px;padding:9px 18px;font-weight:700;text-decoration:none}button:hover{background:#e8eff9}button:disabled{cursor:default;color:#5d6879;background:#e8edf3;border-color:#8c99ab}button[aria-pressed="true"],#movie-play,#sim-play{background:var(--blue);color:#fff}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--focus);outline-offset:4px}input[type="range"]{width:100%;height:44px;accent-color:var(--blue);cursor:ew-resize}input[type="checkbox"]{width:23px;height:23px;accent-color:var(--blue);flex-shrink:0}input[type="number"],select{border:1px solid #7387a2;border-radius:7px;min-height:46px;padding:6px 10px;background:#fff;color:var(--ink);max-width:100%}select{width:100%}h1,h2,h3{color:var(--blue);line-height:1.45;letter-spacing:.01em}h1{font-size:clamp(30px,4vw,48px);margin:18px 0 22px;font-weight:850}h2{font-size:clamp(24px,2.8vw,32px);margin:0 0 20px}h3{font-size:21px;margin-top:30px}p{margin:12px 0 20px}li{margin:9px 0}header{display:flex;align-items:center;gap:24px;padding:20px max(24px,calc((100vw - 1180px)/2));border-bottom:1px solid var(--line);min-height:95px}header a{text-decoration:none}.brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:800;margin-right:auto}.brand img{object-fit:contain}.brand small{display:block;font-size:9px;letter-spacing:.7px;font-weight:600}.header-call{border:1px solid var(--blue);border-radius:7px;padding:7px 15px;white-space:nowrap}.skip{position:absolute;top:-100px;background:#fff;z-index:10;padding:10px}.skip:focus{top:0}main{max-width:1180px;margin:auto;padding:0 28px}section{margin:64px 0;scroll-margin-top:24px}section:not(.hero):not(.feature):not(.contact){max-width:850px;margin-left:auto;margin-right:auto}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:center;margin:44px 0 34px}.hero nav{font-size:14px}.eyebrow{display:block;letter-spacing:.12em;font-size:13px;font-weight:800;color:var(--blue);margin:0 0 12px}.lead{font-size:19px;line-height:1.9}.primary{background:var(--orange)!important;color:#102a55!important;border-color:var(--orange)!important;gap:20px;min-height:50px!important}.small{font-size:14px;color:var(--muted)}.caption{font-size:15px;color:var(--muted);text-align:center;margin:12px 0}.toc{display:flex;flex-wrap:wrap;gap:10px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0}.toc a{padding:7px 11px;font-size:15px;text-decoration:none;border-radius:6px}.toc a:hover{background:var(--wash)}.feature{border:1px solid var(--line);border-radius:20px;padding:34px;background:linear-gradient(145deg,#f4f8fc,#fff 60%);box-shadow:0 7px 30px #102a5507}.section-head{max-width:760px}.sim-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:30px;align-items:start}.sim-grid>div:first-child{position:sticky;top:20px}.machine{display:block;width:100%;height:auto;overflow:visible}.machine text{font-family:inherit}.input-row{margin-top:14px}.input-row label{font-size:15px;font-weight:700}.input-row label span{font-size:12px;font-weight:500}.input-pair{display:grid;grid-template-columns:minmax(0,1fr) 82px;gap:14px;align-items:center}.input-pair input[type=number]{width:82px}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0}.metric{padding:18px;background:#fff;border:1px solid var(--line);border-radius:10px}.metric strong{display:block;font-size:25px;color:var(--blue);font-variant-numeric:tabular-nums}.metric span{display:block;font-size:13px;color:var(--muted)}.warning{background:#fff3e4;border-left:5px solid var(--orange);padding:15px 18px;color:#68350e;border-radius:5px}.warning:empty{display:none}.danger{background:#fff1eb;border-color:#a34316;color:#742e12}.safety{border-left:5px solid var(--orange);padding:24px;background:#fff7ed;border-radius:8px}details{border:1px solid var(--line);border-radius:9px;margin:15px 0;background:#fff;padding:0 18px}details[open]{padding-bottom:18px}summary{cursor:pointer;font-weight:700;color:var(--blue);padding:15px 0;min-height:48px}summary::marker{color:var(--blue)}details p:last-child{margin-bottom:0}.formula,code{overflow-wrap:anywhere}blockquote{margin:20px 0;padding:18px 22px;border-left:4px solid var(--blue);background:var(--wash);font-size:17px}.button-row{display:flex;gap:10px;margin:18px 0;flex-wrap:wrap}#flow h3{margin-top:0}#flow .answers{display:grid;gap:12px;margin-top:20px}#flow .answers button{text-align:left;justify-content:start;font-weight:500}.flow-step{font-size:14px;color:var(--muted)}.result{padding:20px;border:2px solid var(--blue);border-radius:12px;background:#fff}#layer-visual{max-width:800px;margin:20px auto}#layer-tools{display:flex;gap:10px;flex-wrap:wrap}#layer-tools>label{width:100%}.faults{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.faults button{display:block;padding:14px}.faults svg{display:block;width:100%;height:135px}.flowing .flow-arrow,.flowing .water-stream{animation:flow .6s linear infinite}.movie{position:relative;background:#102a55;border-radius:12px;overflow:hidden}.movie .machine{border-radius:12px 12px 0 0}.subtitle{background:#102a55;color:#fff;text-align:center;min-height:100px;padding:19px;font-size:20px;line-height:1.65}.voice-state{display:inline-block;background:#fff0dd;border:1px solid #bd6b23;color:#66300b;padding:5px 14px;border-radius:30px;font-size:14px;font-weight:700}.step-buttons{display:flex;gap:9px;justify-content:center}.step-buttons button{padding:6px;min-width:44px}.play-options{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin:18px 0;font-size:15px}.play-options label{display:flex;align-items:center;gap:10px}.play-options select{width:auto}.quiz{border-top:1px solid var(--line);margin-top:30px;padding-top:8px}.quiz button{margin:6px 7px 6px 0;text-align:left;font-size:15px}.table-scroll{max-width:100%;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:15px}th,td{padding:12px;border:1px solid var(--line);text-align:left;min-width:100px;vertical-align:top}th{background:var(--blue);color:#fff}.check{display:flex;align-items:flex-start;gap:12px}.check input{margin-top:6px}.related{display:grid;grid-template-columns:1fr 1fr;gap:14px}.related a{display:flex;justify-content:space-between;gap:15px;padding:14px;border-bottom:1px solid var(--line);text-decoration:none;font-size:15px}.contact{padding:40px;border-radius:16px;background:var(--blue);color:#fff;text-align:center}.contact h2,.contact a{color:#fff}.contact p{max-width:650px;margin:15px auto}footer{padding:28px;text-align:center;background:var(--wash);font-size:14px}[hidden]{display:none!important}#sources a{overflow-wrap:anywhere}@keyframes flow{to{stroke-dashoffset:-20}}@media(max-width:760px){body{font-size:16px}header{padding:15px 20px;gap:16px}.brand{font-size:20px}.brand small{font-size:7px}header>a:not(.brand){font-size:13px}header .header-call{display:none}main{padding:0 18px}.hero{grid-template-columns:1fr;gap:15px;margin-top:28px}.hero .lead{font-size:18px}.hero h1 br{display:none}.hero>div:nth-child(2){margin-top:5px}.feature{padding:22px 18px;border-radius:14px;margin:40px 0}.sim-grid{grid-template-columns:1fr;gap:20px}.sim-grid>div:first-child{position:static}.metrics{grid-template-columns:1fr 1fr;gap:9px}.metric{padding:12px}.metric strong{font-size:23px}.toc{gap:3px}.toc a{font-size:14px;padding:7px 8px}.faults{grid-template-columns:1fr}.related{grid-template-columns:1fr}.subtitle{font-size:17px;padding:16px;min-height:94px}.contact{padding:25px 18px}.step-buttons{gap:6px}.step-buttons button{min-width:40px}.play-options{gap:10px}.safety{padding:20px 16px}section{margin:42px 0}ul{padding-left:22px}.machine text{font-size:18px}.machine [data-part="壓力開關"] text{font-size:16px}.button-row button{padding:9px 13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
@media print{header,.toc,button,.controls,.play-options{display:none}section,.feature{break-inside:avoid;margin:20px 0;box-shadow:none}details{display:block}.contact{background:#fff;color:#193e82}main{max-width:none}.hero{display:block}}
h1>span{display:block;font-size:clamp(28px,3.15vw,43px)}.movie-end{background:#f0f5fa;text-align:center;padding:30px;color:#193e82}.movie-end img{width:62px;height:62px;object-fit:contain}.movie-end strong{display:block;font-size:24px}.movie-end p{margin:10px 0}.layer-outline [data-part="壓力桶"]>g{opacity:0}.layer-outline [data-part="壓力桶"]>text{display:none}
.primary{color:#0b2349!important}

/* Q851：無循環長標籤在手機卡片內換行，壓力／馬達狀態同時以文字呈現。 */
.metric strong{overflow-wrap:anywhere}#movie-phase{font-weight:700;color:var(--blue);font-variant-numeric:tabular-nums}