.q775{--q-blue:#193e82;--q-orange:#d97827;color:#233951;font-family:system-ui,"Microsoft JhengHei",sans-serif;line-height:1.85}.q775 *{box-sizing:border-box}.q775 section{padding:32px 0;border-bottom:1px solid #d5e0ec;scroll-margin-top:80px}.q775 h2{font-size:clamp(1.45rem,3vw,2rem);line-height:1.45;color:var(--q-blue);margin:.2em 0 .7em}.q775 h3{font-size:1.15rem;line-height:1.6;color:var(--q-blue)}.q775 p{margin:.7em 0}.q775 a{color:#193e82;text-decoration:underline;text-underline-offset:3px}.q775-eyebrow{font-weight:700;color:#765018;letter-spacing:.05em;font-size:.9rem}.q775 select,.q775 button,#q775-zoom-dialog button{font:inherit;font-size:1rem;min-height:46px;border:1px solid #8b9eb6;border-radius:8px;background:#fff;color:#193e82;padding:9px 13px;max-width:100%;cursor:pointer}.q775 select{width:100%;padding-right:25px}.q775 button:focus-visible,.q775 select:focus-visible,.q775 input:focus-visible,.q775 summary:focus-visible,#q775-zoom-dialog button:focus-visible{outline:3px solid #d97827;outline-offset:3px}.q775 label{display:block;font-weight:650;margin:14px 0 5px}.q775-flow-grid,.q775-calc-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:28px;align-items:start}.q775-result{background:#eef4fb;border-left:5px solid #193e82;padding:22px;border-radius:0 12px 12px 0;min-height:240px}.q775-result[data-state=danger]{background:#fff2ed;border-color:#ad3428}.q775-result h3{margin-top:0}.q775-result a{display:inline-flex;align-items:center;min-height:44px}.q775-stop{background:#fff3e5;border-left:5px solid #ad3428;padding:16px;border-radius:6px}.q775-layer-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:20px 0}.q775 button[aria-pressed=true]{background:#193e82;color:white;border-color:#193e82}.q775-figure{margin:0;background:#f0f4f9;border:1px solid #cedbe9;border-radius:12px;overflow:hidden}.q775-figure svg{display:block;width:100%;height:auto;max-height:600px}.q775 figcaption{padding:12px 18px;font-size:.9rem;color:#3c526c}.q775-layer-copy{padding:14px 20px;background:#f2f6fb;border-radius:10px;margin:14px 0;min-height:130px}.q775-layer-copy h3{margin:0}.q775-parts li{margin:12px 0}.q775 details{margin:18px 0;border:1px solid #c7d5e5;border-radius:10px;background:white;padding:0 18px}.q775 summary{cursor:pointer;padding:14px 0;min-height:48px;color:#193e82;font-weight:650}.q775 details[open]{padding-bottom:12px}.q775 details p{margin:12px 0}.q775 input[type=range]{width:100%;height:46px;accent-color:#193e82;cursor:pointer;display:block}.q775-calc-select{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.q775-calc-select>div:last-child{grid-column:1/-1}.q775-calc-result{padding:25px;background:#193e82;color:white;border-radius:14px}.q775 .q775-number{font-size:2.75rem;line-height:1.5;margin:0;font-weight:750;font-variant-numeric:tabular-nums}.q775-number span{display:block;font-size:1rem;font-weight:500}.q775-meter{height:17px;background:#d5dfec;border-radius:10px;overflow:hidden}.q775-meter>div{height:100%;width:81.8%;background:#f2b574;transition:width .15s linear}.q775 #q775-load-status{font-weight:600}.q775-scenario{padding:18px 22px;background:#faf3e8;border-radius:10px;margin-top:24px}.q775-quiz{margin-top:24px;padding:18px 22px;border:2px solid #cbd9e9;border-radius:12px}.q775-quiz-buttons{display:flex;gap:10px;flex-wrap:wrap}.q775 .q775-primary{background:#193e82;color:#fff;border-color:#193e82;min-width:130px}.q775-film-stage{position:relative;border:1px solid #a4b8d1;border-radius:14px;padding:20px;background:#f3f7fc;overflow:hidden}.q775-film-stage h3{padding-right:50px}.q775-film-index{position:absolute;right:18px;top:17px;font-weight:700;color:#193e82}.q775-film-schematic{height:210px;position:relative;max-width:640px;margin:18px auto 24px}.q775-wire{position:absolute;height:9px;left:4%;right:11%;background:#d97827;top:43px}.q775-wire span{position:absolute;top:-37px;color:#193e82;font-weight:700}.q775-return{top:145px;background:#193e82}.q775-return span{top:18px}.q775-wire i{display:none;position:absolute;background:white;width:10px;height:10px;border:2px solid #193e82;border-radius:50%;left:0;top:0}.q775-playing .q775-wire i{display:block;animation:q775-flow 2s infinite linear}.q775-playing .q775-return i{animation-direction:reverse}.q775-sensor{position:absolute;left:38%;top:10px;width:100px;height:175px;border:13px solid #8292a6;border-radius:50%;background:#f4f7fa;text-align:center;padding-top:42px;font-size:15px;color:#193e82;box-shadow:4px 6px 10px #20395430}.q775-sensor b{display:block;font-size:13px}.q775-load{position:absolute;right:1%;top:30px;height:132px;width:65px;display:grid;place-items:center;background:linear-gradient(120deg,#fff,#b8c4d0);border:2px solid #71869e;border-radius:8px;color:#193e82;font-weight:700}.q775-leak{position:absolute;right:2%;top:174px;color:#a33429;font-weight:700;display:none}.q775-film-stage[data-scene="2"] .q775-leak{display:block}.q775-film-stage[data-scene="2"] .q775-sensor{border-color:#b44b2b}.q775-caption{min-height:65px;display:flex;align-items:center;justify-content:center;text-align:center;background:#193e82;color:white;border-radius:8px;padding:10px 12px;font-size:1.05rem;line-height:1.5}.q775-film-primary{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:18px}.q775-film-primary label{flex:1;min-width:120px;margin:0;font-size:.85rem}.q775-film-primary output{font-variant-numeric:tabular-nums;font-size:.9rem}.q775-film-options{display:flex;flex-wrap:wrap;gap:10px;align-items:end}.q775-film-options label{flex:1;min-width:120px;margin:0}.q775-transcript li{margin:15px 0}.q775-checklist{border:2px solid #193e82!important;border-radius:14px;padding:24px!important;margin:30px 0}.q775-check-head{display:flex;gap:12px;justify-content:space-between;border-bottom:3px solid #d97827}.q775-check-head span{white-space:nowrap;font-weight:700;color:#193e82}.q775-checklist ul{list-style:none;padding:0}.q775-checklist li{padding:8px 0 8px 29px;position:relative}.q775-checklist li:before{content:"□";position:absolute;left:0;color:#193e82;font-size:22px}.q775-professional li{margin:15px 0}#q775-diagram .q775-internal,#q775-diagram .q775-path-labels,#q775-diagram .q775-loads,#q775-diagram .q775-sensor-cut,#q775-diagram .q775-faults{display:none}#q775-diagram[data-layer="1"] .q775-cover,#q775-diagram[data-layer="3"] .q775-cover{display:none}#q775-diagram[data-layer="1"] .q775-internal,#q775-diagram[data-layer="1"] .q775-path-labels,#q775-diagram[data-layer="1"] .q775-loads,#q775-diagram[data-layer="2"] .q775-sensor-cut,#q775-diagram[data-layer="3"] .q775-internal,#q775-diagram[data-layer="3"] .q775-path-labels,#q775-diagram[data-layer="3"] .q775-loads,#q775-diagram[data-layer="3"] .q775-faults{display:block}#q775-zoom-dialog{max-width:1000px;width:calc(100% - 26px);max-height:90vh;border:2px solid #193e82;border-radius:14px;padding:20px;color:#193e82}#q775-zoom-dialog::backdrop{background:#142c4caa}.q775-dialog-head{display:flex;justify-content:space-between;gap:15px;align-items:center}.q775-dialog-head h2{font-size:1.2rem}.q775-zoom-scroll{overflow:auto;max-height:65vh}.q775-zoom-scroll svg{min-width:760px;display:block;width:100%;height:auto}.q775-zoom-scroll .q775-internal,.q775-zoom-scroll .q775-path-labels,.q775-zoom-scroll .q775-loads{display:block}.q775-zoom-scroll .q775-cover,.q775-zoom-scroll .q775-sensor-cut,.q775-zoom-scroll .q775-faults{display:none}.q775-zoom-scroll[data-layer="0"] .q775-cover,.q775-zoom-scroll[data-layer="2"] .q775-sensor-cut,.q775-zoom-scroll[data-layer="3"] .q775-faults{display:block}.q775-zoom-scroll[data-layer="0"] .q775-internal,.q775-zoom-scroll[data-layer="0"] .q775-path-labels,.q775-zoom-scroll[data-layer="0"] .q775-loads{display:none}.q775 [hidden]{display:none!important}@keyframes q775-flow{from{left:0}to{left:100%}}@media(max-width:700px){.q775-flow-grid,.q775-calc-grid{grid-template-columns:1fr;gap:16px}.q775-result{min-height:0}.q775 section{padding:26px 0}.q775-layer-buttons{gap:5px}.q775-layer-buttons button{font-size:.9rem;padding:8px 4px}.q775-film-stage{padding:14px}.q775-check-head{display:block}.q775-film-primary{gap:12px}.q775-film-primary output{width:100%;text-align:right}.q775 .q775-number{font-size:2.4rem}.q775-caption{font-size:.95rem}.q775-sensor{left:35%;width:84px;font-size:14px;border-width:10px}.q775-sensor b{font-size:12px}.q775-checklist{padding:18px!important}}@media(prefers-reduced-motion:reduce){.q775 *{animation:none!important;transition:none!important}.q775-playing .q775-wire i{display:none}}@media print{.q775 button,.q775 select,.q775 input,.q775-play-options,.q775-film-primary{display:none}.q775-checklist{break-inside:avoid}.q775-calc-result{background:white;color:#193e82}}

/* Q775 small captions: 20字含標點仍維持單行。 */
@media(max-width:380px){.q775-caption{font-size:13.5px}}

/* Q822：各鏡實體圖面與資料同步。 */
.r4-film{display:block;width:100%;height:auto;max-width:100%;font-family:system-ui,'Microsoft JhengHei',sans-serif}.r4-film [data-r4-scene]{display:none}.r4-film [data-r4-scene].r4-current{display:block}.r4-film text{font-weight:600}.r4-film .r4-flow{stroke-dasharray:9 7}.r4-film[hidden]{display:none!important}

.r4-test-visual{display:none}#q775-stage[data-scene="3"] .r4-test-visual{display:block}#q775-stage[data-scene="3"] .q775-film-schematic{display:none}.r4-test-trip,.r4-test-detect{display:none}#q775-stage[data-test-phase="trip"] .r4-test-trip,#q775-stage[data-test-phase="detect"] .r4-test-detect{display:block}