/* The same scene and records persist across the whole explanation. */
.steam-demo{--focus:0;--sheet-progress:0;--opening:1;--event:0;--sources:0;--aligned:0;--evidence:0;--comparison:0;--action:0;--approval:0;--executed:0;--verify:0;--cursor:.1;--teal:var(--anim-accent);--deep:var(--anim-ink);--edge:var(--anim-line);background:var(--anim-paper);color:var(--deep);font-family:BeHan,'PingFang SC',sans-serif;margin:25px 0 24px;border:1px solid var(--anim-line);border-radius:9px;overflow:hidden;scroll-margin-top:22px}
.steam-top{display:flex;justify-content:space-between;gap:15px;padding:20px 26px 0;font-size:11px;color:var(--anim-muted);letter-spacing:.035em}.steam-top>span:last-child{font-size:10px;color:var(--anim-muted)}.steam-canvas{position:relative;height:clamp(620px,44vw,670px);overflow:hidden;isolation:isolate}
.steam-camera{position:absolute;inset:22px 0 60px;transform:translateX(calc(var(--focus) * -27%)) scale(calc(1 - var(--focus) * .25));opacity:calc(1 - var(--focus) * .32);transform-origin:50% 62%;will-change:transform,opacity}.steam-camera>img{display:block;width:100%;height:100%;object-fit:cover;mix-blend-mode:multiply}.steam-camera>svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.steam-pipe-glow{fill:none;stroke:var(--anim-accent);stroke-width:12;filter:url(#steam-glow);opacity:.5}.steam-pipe-flow{fill:none;stroke:var(--anim-muted);stroke-width:5;stroke-dasharray:2 12;animation:steam-pipe 4s linear infinite}.steam-demo[data-playing=false] .steam-pipe-flow{animation-play-state:paused}
.steam-site-label{position:absolute;top:22%;color:var(--anim-ink);font-size:13px;font-weight:600;opacity:calc((1 - var(--focus)) * (1 - var(--event)) * (1 - var(--sources)))}.steam-boiler-label{left:10%}.steam-process-label{right:10%}.steam-site-event{position:absolute;right:8%;top:12%;display:grid;gap:3px;font-size:11px;opacity:var(--event);transform:translateY(calc((1 - var(--event)) * 12px));padding:12px 16px;background:color-mix(in srgb,var(--anim-sheet) 91%,transparent);border:1px solid var(--anim-line);border-radius:6px;box-shadow:0 6px 22px color-mix(in srgb,var(--anim-muted) 3%,transparent)}.steam-site-event strong{font-size:13px;color:var(--anim-accent);font-weight:600}.steam-site-event>span:last-child{color:var(--anim-muted)}.steam-pulse{position:absolute;width:7px;height:7px;left:-4px;top:26px;background:var(--anim-accent);border-radius:50%;box-shadow:0 0 0 5px color-mix(in srgb,var(--anim-wash) 7%,transparent)}.steam-site-action{position:absolute;left:15%;bottom:14%;background:color-mix(in srgb,var(--anim-sheet) 93%,transparent);border:1px solid var(--anim-line);border-radius:6px;padding:12px 16px;display:grid;gap:6px;opacity:var(--executed);transform:translateY(calc((1 - var(--executed)) * 15px));font-size:11px}.steam-site-action>span{color:var(--anim-muted)}.steam-site-action strong{font-size:13px;color:var(--anim-accent)}.steam-site-action i{font-style:normal;color:var(--anim-accent);font-size:10px}
.steam-opening{position:absolute;top:20px;right:34px;text-align:right;opacity:var(--opening);transform:translateY(calc((1 - var(--opening)) * -20px));pointer-events:none}.steam-opening h3{font-size:clamp(25px,2.6vw,36px);font-weight:600;line-height:1.5;margin:0;letter-spacing:-.025em;color:var(--anim-ink)}
.steam-source{position:absolute;z-index:2;padding:12px 16px;width:180px;border:1px solid var(--anim-line);border-radius:6px;background:color-mix(in srgb,var(--anim-sheet) 93%,transparent);box-shadow:0 12px 28px color-mix(in srgb,var(--anim-muted) 4%,transparent);font-size:12px;opacity:var(--packet-opacity,var(--sources));transform:translate(var(--sx,0px),var(--sy,0px)) scale(calc(1 - var(--collect,0) * .12));pointer-events:none}.steam-source span{font-weight:600;color:var(--anim-ink)}.steam-source small{display:block;font-size:10px;color:var(--anim-muted);margin-top:6px}.steam-source svg{display:block;height:26px;width:100%;margin-top:8px}.steam-source svg path{fill:none;stroke:var(--anim-accent);stroke-width:2}.steam-source strong{display:block;font-size:11px;font-weight:400;margin-top:8px}.steam-source-energy{left:10%;top:39%}.steam-source-demand{right:12%;top:47%}.steam-source-production{right:5%;top:20%}
.steam-workspace{position:absolute;z-index:3;left:32%;right:3%;top:48px;bottom:78px;background:color-mix(in srgb,var(--anim-sheet) 93%,transparent);border:1px solid var(--anim-line);box-shadow:0 20px 50px color-mix(in srgb,var(--anim-muted) 8%,transparent),0 3px 9px color-mix(in srgb,var(--anim-muted) 3%,transparent);border-radius:9px;padding:19px 22px 17px;opacity:var(--sheet-progress);transform:translate(calc((1 - var(--sheet-progress)) * 55px),calc((1 - var(--sheet-progress)) * 65px)) scale(calc(.84 + var(--sheet-progress) * .16));transform-origin:80% 80%;will-change:transform,opacity;pointer-events:none;backdrop-filter:blur(10px)}
.steam-work-head{display:flex;align-items:center;justify-content:space-between;gap:12px;height:31px}.steam-work-head>div{display:flex;align-items:center;gap:9px}.steam-work-icon{width:24px;height:24px;display:grid;place-content:center;border-radius:50%;background:var(--anim-wash);color:var(--anim-accent);font-size:17px}.steam-work-head strong{font-size:16px;font-weight:600;line-height:1.5}.steam-work-head>span{font-size:10px;color:var(--anim-muted);white-space:nowrap}.steam-work-sub{display:flex;justify-content:space-between;gap:16px;margin:9px 0 16px;font-size:10px;color:var(--anim-muted)}.steam-work-sub>span:last-child{font-size:9px;color:var(--anim-muted);white-space:nowrap}
.steam-tracks{position:relative;height:calc(251px - var(--comparison) * 91px);padding-top:5px}.steam-track{position:relative;display:grid;grid-template-columns:104px minmax(0,1fr);gap:10px;align-items:center;height:calc(53px - var(--comparison) * 21px);opacity:var(--row,0);transform:translateX(calc((1 - var(--row,0)) * 36px + (1 - var(--aligned)) * var(--misalign,0px)));will-change:transform,opacity}.steam-track-label{position:relative;z-index:2;background:var(--anim-sheet);font-size:12px;line-height:1.5}.steam-track-label span{display:block}.steam-track-label small{font-size:9px;color:var(--anim-muted)}.steam-track svg{display:block;height:calc(46px - var(--comparison) * 18px);width:100%;overflow:visible}.steam-data-line{fill:none;stroke:var(--anim-accent);stroke-width:2.2;stroke-dasharray:100;stroke-dashoffset:calc((1 - var(--row,0)) * 100)}.steam-track-axis{fill:none;stroke:var(--anim-line);stroke-width:1;vector-effect:non-scaling-stroke}.steam-track svg text{font-size:10px;font-family:BeHan,sans-serif;fill:var(--anim-muted)}.steam-production-band{fill:var(--anim-wash)}.steam-wait-band{fill:var(--anim-muted)}.steam-baseline{fill:none;stroke:var(--anim-muted);stroke-width:2;stroke-dasharray:4 4;opacity:var(--verify);vector-effect:non-scaling-stroke}.steam-track-guide{position:absolute;z-index:1;left:114px;right:0;top:0;bottom:30px;pointer-events:none}.steam-wait-window{position:absolute;top:0;bottom:0;left:50%;width:50%;background:color-mix(in srgb,var(--anim-wash) 7%,transparent);border-left:1px solid color-mix(in srgb,var(--anim-accent) 42%,transparent);opacity:var(--evidence)}.steam-linked-cursor{position:absolute;top:0;bottom:0;left:calc(var(--cursor) * 100%);border-left:1px solid var(--anim-accent);opacity:var(--aligned)}.steam-linked-cursor:after{content:'';display:block;position:absolute;left:-3px;bottom:0;width:5px;height:5px;border-radius:50%;background:var(--anim-accent)}.steam-linked-cursor>span{position:absolute;left:5px;top:-15px;font-size:9px;background:color-mix(in srgb,var(--anim-sheet) 93%,transparent);color:var(--anim-accent);padding:0 4px;white-space:nowrap}.steam-time-axis{margin-left:114px;display:flex;justify-content:space-between;font-size:9px;color:var(--anim-muted);padding-top:10px;opacity:var(--aligned)}.steam-record-readout{display:flex;justify-content:space-between;gap:8px;font-size:10px;color:var(--anim-muted);height:22px;padding:0 0 4px;border-bottom:1px solid var(--anim-line)}.steam-comparison-legend{display:flex;align-items:center;gap:5px;opacity:var(--verify);font-size:9px}.steam-comparison-legend i{width:10px;height:2px;border-top:1px dashed var(--anim-muted)}.steam-comparison-legend i:nth-of-type(2){border-top:2px solid var(--anim-accent)}
.steam-evidence{position:absolute;left:22px;right:22px;bottom:18px;border-left:2px solid var(--anim-accent);padding:6px 0 5px 12px;opacity:var(--evidence-note,0);transform:translateY(calc((1 - var(--evidence-note,0)) * 14px))}.steam-evidence-facts{display:flex;gap:19px;font-size:10px;color:var(--anim-muted);margin-bottom:5px}.steam-evidence strong{display:block;font-size:14px;line-height:1.7;font-weight:600}.steam-check{display:block;font-size:10px;color:var(--anim-muted);margin-top:4px}
.steam-alternatives{position:absolute;left:22px;right:22px;bottom:18px;display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;opacity:var(--options,0);transform:translateY(calc((1 - var(--options,0)) * 24px))}.steam-alternatives-title{grid-column:1/-1;font-size:11px;color:var(--anim-muted);margin-bottom:2px}.steam-option{border:1px solid var(--anim-line);border-radius:5px;padding:13px;background:var(--anim-sheet)}.steam-option>span{font-size:13px;color:var(--anim-ink)}.steam-option p{font-size:10px;line-height:1.8;color:var(--anim-muted);margin:7px 0}.steam-option small{font-size:9px;color:var(--anim-muted)}.steam-option-wait{border-color:color-mix(in srgb,var(--anim-accent) calc(20% + var(--chosen,0) * 65%),transparent);background:color-mix(in srgb,var(--anim-wash) calc(var(--chosen,0) * 100%),transparent);transform:translateY(calc(var(--chosen,0) * -3px))}.steam-option-wait small{color:var(--anim-accent);opacity:var(--chosen,0)}.steam-option-run{opacity:calc(1 - var(--chosen,0) * .46)}
.steam-action-record{position:absolute;left:22px;right:22px;bottom:18px;padding:14px 17px;background:var(--anim-wash);border:1px solid var(--anim-line);border-radius:6px;opacity:var(--action);transform:translate(calc((1 - var(--action)) * 25px),calc((1 - var(--action)) * 16px)) scale(calc(.96 + var(--action) * .04));transform-origin:15% 50%}.steam-action-record>div{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:10px;color:var(--anim-muted);margin-bottom:10px}.steam-action-record>strong{font-size:16px;line-height:1.5;font-weight:600;color:var(--anim-ink)}.steam-approval{opacity:var(--approval);transform:scale(calc(.8 + var(--approval) * .2));font-size:9px;color:var(--anim-accent);white-space:nowrap}.steam-action-record dl{margin:10px 0 0;display:grid;gap:6px;font-size:10px;line-height:1.5}.steam-action-record dl>div{display:grid;grid-template-columns:65px 1fr;gap:10px}.steam-action-record dt{color:var(--anim-muted)}.steam-action-record dd{margin:0;color:var(--anim-muted)}
.steam-effect-readout{position:absolute;left:22px;right:22px;bottom:22px;opacity:var(--verify);transform:translateY(calc((1 - var(--verify)) * 20px));font-size:10px;color:var(--anim-muted)}.steam-effect-readout strong{display:block;font-size:17px;line-height:1.6;color:var(--anim-accent);margin-top:8px;font-weight:600}.steam-effect-readout p{font-size:11px;color:var(--anim-muted);margin:5px 0 9px}.steam-effect-readout small{font-size:9px;color:var(--anim-muted)}
.steam-action-connector{position:absolute;left:7%;right:30%;top:36%;height:190px;z-index:4;opacity:var(--connector,0);pointer-events:none}.steam-action-connector svg{width:100%;height:100%;overflow:visible}.steam-action-connector path{fill:none;stroke:var(--anim-accent);stroke-width:1.5;stroke-dasharray:100;stroke-dashoffset:calc((1 - var(--connector,0)) * 100)}.steam-action-connector circle{fill:var(--anim-paper);stroke:var(--anim-accent);stroke-width:2}
.steam-caption{position:absolute;z-index:5;left:26px;right:26px;bottom:16px;display:flex;align-items:center;gap:10px;font-size:13px;line-height:1.8;color:var(--anim-ink);min-height:30px;background:color-mix(in srgb,var(--anim-paper) 91%,transparent)}.steam-caption p{margin:0;font-size:13px;line-height:1.8;max-width:65em}.steam-caption-dot{width:5px;height:5px;background:var(--anim-accent);border-radius:50%;flex:0 0 auto}.steam-transport{display:flex;align-items:center;gap:20px;border-top:1px solid var(--anim-line);padding:12px 26px}.steam-transport button{min-height:40px;padding:6px 0;white-space:nowrap;color:var(--anim-muted);font-size:12px}.steam-transport input{min-width:0;flex:1;accent-color:var(--anim-muted);cursor:pointer;margin:0;height:22px}.steam-transport>span{font-size:10px;color:var(--anim-muted);white-space:nowrap;font-variant-numeric:tabular-nums}.steam-footnote{font-size:10px;color:var(--anim-muted);margin:0;padding:0 26px 15px;line-height:1.8}.steam-demo button:focus-visible,.steam-demo input:focus-visible{outline:2px solid var(--anim-accent);outline-offset:4px}.steam-work-details{border-top:1px solid var(--line);padding-top:15px}.steam-work-details>summary{cursor:pointer;color:var(--brand);font-size:13px;min-height:44px;line-height:1.8}.steam-work-details[open]>summary{margin-bottom:15px}
@keyframes steam-pipe{to{stroke-dashoffset:-100}}
@media(max-width:1000px){.steam-workspace{left:26%;right:2%;padding:16px}.steam-work-head strong{font-size:14px}.steam-track{grid-template-columns:87px minmax(0,1fr);gap:8px}.steam-track-guide{left:95px}.steam-time-axis{margin-left:95px}.steam-track-label{font-size:11px}.steam-work-head>span{font-size:9px}.steam-evidence,.steam-alternatives,.steam-action-record,.steam-effect-readout{left:16px;right:16px}.steam-work-sub{font-size:9px}.steam-track svg text{font-size:10px}.steam-workspace{top:54px}}
@media(max-width:700px){.steam-top{padding:17px 16px 0;font-size:10px;gap:10px}.steam-top>span:last-child{font-size:9px}.steam-canvas{height:625px}.steam-camera{inset:86px -15px 140px;transform:translateY(calc(var(--focus) * 160px)) scale(calc(1 - var(--focus) * .15));opacity:calc(1 - var(--focus) * .25)}.steam-camera>img{object-fit:contain}.steam-camera>svg{display:none}.steam-opening{top:38px;left:22px;right:auto;text-align:left}.steam-opening h3{font-size:26px}.steam-site-label{top:33%;font-size:10px}.steam-boiler-label{left:9%}.steam-process-label{right:8%}.steam-site-event{top:26%;right:6%;padding:9px 10px;font-size:10px}.steam-site-event strong{font-size:11px}.steam-source{width:138px;padding:10px;font-size:10px}.steam-source-energy{left:6%;top:39%}.steam-source-demand{right:4%;top:52%}.steam-source-production{right:5%;top:18%}.steam-source small{font-size:9px}.steam-source strong{font-size:10px}.steam-workspace{left:12px;right:12px;top:35px;bottom:88px;padding:14px 12px;backdrop-filter:blur(8px);background:color-mix(in srgb,var(--anim-sheet) 96%,transparent)}.steam-work-head strong{font-size:13px}.steam-work-head>span{font-size:9px}.steam-work-icon{width:19px;height:19px;font-size:15px}.steam-work-head>div{gap:6px}.steam-work-sub{margin:6px 0 20px;gap:5px;font-size:9px}.steam-work-sub>span:last-child{font-size:8px}.steam-track{grid-template-columns:75px minmax(0,1fr);gap:5px;height:calc(56px - var(--comparison) * 18px)}.steam-track-label{font-size:10px}.steam-track-label small{font-size:8px}.steam-track-guide{left:80px}.steam-time-axis{margin-left:80px;font-size:8px}.steam-track svg text{font-size:24px}.steam-tracks{height:calc(260px - var(--comparison) * 80px)}.steam-evidence,.steam-alternatives,.steam-action-record,.steam-effect-readout{left:12px;right:12px;bottom:20px}.steam-evidence strong{font-size:13px}.steam-evidence-facts{font-size:9px;gap:12px}.steam-check{font-size:9px;line-height:1.9}.steam-option{padding:10px 9px}.steam-option>span{font-size:11px}.steam-option p{font-size:9px;line-height:1.9}.steam-option small{font-size:8px;line-height:1.7;display:block}.steam-alternatives{gap:8px}.steam-alternatives-title{font-size:10px;line-height:1.8}.steam-action-record{padding:12px}.steam-action-record>div{align-items:start;gap:6px}.steam-approval{font-size:8px;max-width:135px;white-space:normal;text-align:right;line-height:1.7}.steam-action-record>strong{font-size:14px}.steam-action-record dl{font-size:9px;gap:8px}.steam-action-record dl>div{grid-template-columns:53px 1fr;gap:7px}.steam-effect-readout strong{font-size:14px}.steam-effect-readout small{font-size:9px;line-height:1.9;display:block}.steam-comparison-legend{font-size:8px}.steam-record-readout{font-size:9px;height:30px;line-height:1.6}.steam-caption{left:16px;right:16px;bottom:12px;gap:8px;align-items:start;min-height:40px}.steam-caption-dot{margin-top:10px}.steam-caption p{font-size:12px;line-height:1.85}.steam-transport{padding:10px 16px;gap:10px}.steam-transport button{font-size:11px}.steam-transport>span{font-size:9px}.steam-footnote{padding:0 16px 14px;font-size:9px}.steam-site-action{left:10%;bottom:10%;padding:10px;max-width:240px}.steam-site-action strong{font-size:12px}.steam-action-connector{left:20%;right:8%;top:58%;height:200px}}
@media(prefers-reduced-motion:reduce){.steam-demo *{animation:none!important;transition:none!important}}

.steam-action-marker{position:absolute;left:50%;top:0;bottom:0;border-left:2px solid var(--anim-muted);opacity:var(--verify)}.steam-action-marker>span{position:absolute;bottom:-26px;left:4px;font-size:9px;color:var(--anim-muted);background:var(--anim-sheet);white-space:nowrap;padding:1px 4px}

/* Size traces from live plot geometry; labels never pass through an SVG transform. */
.steam-plot{position:relative;min-width:0;height:calc(46px - var(--comparison) * 18px)}
.steam-plot>svg{height:100%;width:100%;display:block}
.steam-operation-status{position:absolute;left:57%;top:55%;font:10px/1.5 BeHan,'PingFang SC',sans-serif;color:var(--anim-muted);white-space:nowrap}
.steam-event-bands{display:flex;gap:8px;height:calc(28px - var(--comparison) * 8px);align-items:stretch;font:10px/1.4 BeHan,'PingFang SC',sans-serif;color:var(--anim-muted)}
.steam-event-bands>span{flex:1;display:flex;align-items:center;justify-content:center;background:var(--anim-wash);border-radius:3px;white-space:nowrap}
.steam-event-bands>span:last-child{background:var(--anim-muted)}
@media(max-width:700px){.steam-operation-status{font-size:9px;left:48%}.steam-event-bands{font-size:10px}.steam-work-sub>span:last-child{white-space:normal;max-width:110px;text-align:right}}

.steam-process-label{top:38%}
@media(max-width:700px){.steam-process-label{top:52%}.steam-site-event{top:19%;right:6%;max-width:160px}.steam-source-production{top:17%}}
/* Full-play review: protect object identity, reading time and visible evidence. */
.steam-canvas{height:clamp(720px,52vw,780px)}
.steam-camera{transform-origin:0% 62%;transform:scale(calc(1 - var(--focus) * .4));opacity:calc(1 - var(--focus) * .18)}
.steam-site-label{top:auto;bottom:8%;font-size:14px}.steam-process-label{top:auto}
.steam-top{font-size:12px}.steam-top>span:last-child{font-size:11px}
.steam-work-head{height:34px}.steam-work-head strong{font-size:18px}.steam-work-head>span{font-size:12px}
.steam-work-sub{font-size:12px;margin:10px 0 18px}.steam-work-sub>span:last-child{font-size:10px}
.steam-tracks{height:calc(276px - var(--comparison) * 64px)}
.steam-track{height:calc(60px - var(--comparison) * 16px)}.steam-track-label{font-size:15px}.steam-track-label small{font-size:11px;color:var(--anim-muted)}
.steam-plot,.steam-track svg{height:calc(50px - var(--comparison) * 12px)}.steam-plot>svg{height:100%}
.steam-operation-status{font-size:12px}.steam-event-bands{font-size:13px;height:calc(31px - var(--comparison) * 7px)}
.steam-time-axis{font-size:11px}.steam-linked-cursor>span{font-size:11px}.steam-record-readout{font-size:12px;height:28px;color:var(--anim-muted)}.steam-comparison-legend{font-size:11px}
.steam-source{width:calc(200px - var(--merge,0) * 65px);padding:calc(13px - var(--merge,0) * 7px) 12px;font-size:14px;transform-origin:0 0;overflow:hidden}
.steam-source small{font-size:12px;max-height:calc((1 - var(--merge,0)) * 25px);opacity:calc(1 - var(--merge,0));margin-top:calc((1 - var(--merge,0)) * 6px);overflow:hidden}
.steam-source svg{max-height:calc((1 - var(--merge,0)) * 26px);margin-top:calc((1 - var(--merge,0)) * 8px);opacity:calc(1 - var(--merge,0));overflow:hidden}
.steam-source strong{font-size:12px;max-height:calc((1 - var(--merge,0)) * 24px);margin-top:calc((1 - var(--merge,0)) * 8px);opacity:calc(1 - var(--merge,0));overflow:hidden}
.steam-source-operation{left:6%;top:66%}
.steam-evidence{padding-left:14px}.steam-evidence-facts{font-size:12px}.steam-evidence strong{font-size:17px}.steam-check{font-size:12px;color:var(--anim-muted)}
.steam-condition-check{display:grid;gap:3px;max-height:calc(var(--checked,0) * 65px);opacity:var(--checked,0);overflow:hidden;margin-top:calc(var(--checked,0) * 10px);font-size:11px;color:var(--anim-muted)}
.steam-condition-check strong{font-size:13px;font-weight:500}
.steam-alternatives-title{font-size:13px}.steam-option>span{font-size:16px}.steam-option p{font-size:12px;color:var(--anim-muted)}.steam-option small{font-size:11px;line-height:1.7}.steam-option-wait small{color:var(--anim-accent)}
.steam-action-record>div{font-size:12px}.steam-action-record>strong{font-size:18px}.steam-action-record dl{font-size:12px;gap:8px}.steam-action-record dl>div{grid-template-columns:78px 1fr}.steam-approval{font-size:11px}
.steam-site-action strong{font-size:14px}.steam-site-action>span,.steam-site-action i{font-size:12px}
.steam-effect-readout{font-size:12px}.steam-effect-readout strong{font-size:16px;margin-top:10px}.steam-effect-readout>small{font-size:11px;display:block;margin-top:4px}
.steam-verification-records{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:8px;opacity:var(--aux,0);transform:translateY(calc((1 - var(--aux,0)) * 12px))}.steam-verification-record>span{font-size:13px;color:var(--anim-ink)}.steam-verification-record>small{font-size:10px;color:var(--anim-muted);display:block;line-height:1.7}
.steam-mini-plot{height:40px;margin-top:4px}.steam-mini-plot>svg{width:100%;height:100%;display:block;overflow:visible}.steam-aux-before{fill:none;stroke:var(--anim-muted);stroke-width:1.5;stroke-dasharray:4 3}.steam-aux-after{fill:none;stroke:var(--anim-accent);stroke-width:1.6}.steam-pressure-band{fill:color-mix(in srgb,var(--anim-wash) 7%,transparent)}
.steam-caption p{font-size:15px}.steam-caption{min-height:37px;bottom:12px}.steam-transport button{font-size:13px}.steam-transport>span,.steam-footnote{font-size:11px}
.steam-action-marker>span{font-size:11px}
@media(max-width:1000px){.steam-work-head strong{font-size:16px}.steam-work-head>span{font-size:11px}.steam-work-sub{font-size:11px}.steam-track-label{font-size:14px}.steam-track-label small{font-size:10px}.steam-action-record dl{font-size:11px}.steam-option>span{font-size:14px}}
@media(max-width:700px){.steam-canvas{height:720px}.steam-camera{transform-origin:50% 62%;transform:translateY(calc(var(--focus) * 120px)) scale(calc(1 - var(--focus) * .2))}.steam-opening h3{font-size:26px}.steam-top{font-size:11px}.steam-top>span:last-child{font-size:10px}.steam-work-head strong{font-size:15px}.steam-work-head>span{font-size:10px;max-width:85px;white-space:normal;text-align:right}.steam-work-sub{font-size:10px;margin-bottom:17px}.steam-work-sub>span:last-child{font-size:9px;max-width:110px}.steam-track-label{font-size:13px}.steam-track-label small{font-size:10px}.steam-track{height:calc(60px - var(--comparison) * 16px)}.steam-tracks{height:calc(276px - var(--comparison) * 64px)}.steam-time-axis{font-size:10px}.steam-linked-cursor>span{font-size:10px}.steam-record-readout{font-size:10px;min-height:30px;height:auto}.steam-comparison-legend{font-size:9px}.steam-operation-status{font-size:10px;left:48%}.steam-event-bands{font-size:12px}.steam-source{width:calc(155px - var(--merge,0) * 40px);font-size:12px}.steam-source small,.steam-source strong{font-size:10px}.steam-source-operation{left:5%;top:69%}.steam-evidence strong{font-size:15px}.steam-evidence-facts{font-size:11px}.steam-check{font-size:11px;line-height:1.7}.steam-condition-check strong{font-size:12px;line-height:1.8}.steam-condition-check{max-height:calc(var(--checked,0) * 84px)}.steam-alternatives-title{font-size:12px}.steam-option>span{font-size:13px}.steam-option p{font-size:11px}.steam-option small{font-size:10px}.steam-action-record>strong{font-size:16px}.steam-action-record dl{font-size:11px;gap:7px}.steam-action-record dl>div{grid-template-columns:56px 1fr}.steam-action-record>div{font-size:11px}.steam-approval{font-size:9px}.steam-effect-readout>span{font-size:11px}.steam-effect-readout strong{font-size:14px;line-height:1.6}.steam-effect-readout>small{font-size:10px;line-height:1.8}.steam-verification-records{gap:12px}.steam-verification-record>span{font-size:12px}.steam-verification-record>small{font-size:9px}.steam-mini-plot{height:34px}.steam-caption p{font-size:13px}.steam-caption{min-height:45px;bottom:8px}.steam-transport button{font-size:12px}.steam-footnote{font-size:10px}.steam-action-marker>span{font-size:10px}}

.steam-action-connector{inset:0;width:auto;height:auto}.steam-action-connector .steam-action-link{stroke-width:2}.steam-action-connector marker path{fill:none;stroke:var(--anim-accent);stroke-width:1.6;stroke-dasharray:none;stroke-dashoffset:0}

/* Same product UI hierarchy as the site; the metallic scene keeps its materials. */
.steam-demo{font-family:BeWaterHan,var(--body),sans-serif;scroll-margin-top:0;background:var(--anim-paper);color:var(--anim-ink)}
.steam-demo h3{font-family:inherit}.steam-top,.steam-top>span:last-child,.steam-transport>span,.steam-footnote{font-size:12px}.steam-transport button{min-height:44px}
@media(max-width:700px){
 .steam-canvas{height:600px}.steam-camera{inset:35px 0 65px}.steam-workspace{top:20px;bottom:55px;padding:12px}
 .steam-work-head{height:40px}.steam-work-head strong{font-size:15px}.steam-work-head>span{font-size:12px;max-width:92px;white-space:normal;line-height:1.35}
 .steam-work-sub{font-size:12px;margin:7px 0 14px;line-height:1.4}.steam-work-sub>span:last-child{display:none}
 .steam-tracks{height:calc(224px - var(--comparison) * 42px)}.steam-track{height:calc(48px - var(--comparison) * 8px)}.steam-plot,.steam-track svg{height:calc(40px - var(--comparison) * 8px)}
 .steam-track-label{font-size:13px}.steam-track-label small{font-size:12px}.steam-operation-status,.steam-event-bands,.steam-time-axis,.steam-linked-cursor>span{font-size:12px}
 .steam-record-readout{font-size:12px;min-height:34px;height:auto;line-height:1.45;align-items:start}.steam-record-readout>span:first-child{max-width:66%}.steam-comparison-legend{font-size:12px;flex-wrap:wrap;max-width:34%;justify-content:end}
 .steam-evidence-facts,.steam-check,.steam-condition-check,.steam-condition-check strong,.steam-option p,.steam-option small,.steam-approval,.steam-action-record dl,.steam-effect-readout>small,.steam-verification-record>small{font-size:12px}
 .steam-evidence strong{font-size:14px}.steam-evidence{bottom:16px}.steam-condition-check{max-height:calc(var(--checked,0) * 96px)}
 .steam-option{padding:8px}.steam-option>span{font-size:14px}.steam-alternatives{gap:8px}.steam-option p{margin:5px 0;line-height:1.45}.steam-option small{line-height:1.4}.steam-alternatives-title{font-size:12px}
 .steam-action-record{padding:10px}.steam-action-record dl{gap:5px;line-height:1.45}.steam-action-record>strong{font-size:15px}.steam-action-record>div{font-size:12px;margin-bottom:6px}
 .steam-effect-readout{bottom:15px}.steam-effect-readout strong{font-size:14px;line-height:1.45}.steam-verification-records{gap:8px}.steam-mini-plot{height:30px}.steam-verification-record>span{font-size:13px}
 .steam-caption{left:12px;right:12px;bottom:6px;min-height:38px}.steam-caption p{font-size:13px;line-height:1.5}.steam-transport{padding:4px 12px;gap:8px}.steam-footnote{padding:0 12px 10px;font-size:12px}
}

/* Phone: four records retain readable row height; review follows the axis. */
@media(max-width:700px){
 .steam-canvas{height:720px}.steam-workspace{bottom:55px}
 .steam-tracks{height:276px}.steam-track{height:60px}
 .steam-plot,.steam-track svg{height:50px}
 .steam-time-axis{bottom:-22px}
 .steam-record-readout{margin-top:28px;display:block;min-height:44px}
 .steam-record-readout>span:first-child{display:block;max-width:none}
 .steam-comparison-legend{max-width:none;justify-content:start;gap:7px;margin-top:4px}
 .steam-linked-cursor>span,.steam-action-marker>span{max-width:95px;white-space:normal;font-size:11px;line-height:1.25}
 .steam-effect-readout{bottom:12px}.steam-verification-record>small{font-size:11px;line-height:1.45}
 .steam-transport{position:sticky;bottom:0;z-index:30}
}

@media(max-width:700px){
 .steam-canvas{height:620px}
 .steam-workspace{overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
 .steam-work-head{position:sticky;top:0;z-index:5;background:var(--anim-sheet)}
 .steam-effect-readout{position:relative;left:auto;right:auto;bottom:auto;margin:16px 0 0;padding-bottom:10px}
 .steam-tracks{height:266px;padding-top:5px}.steam-time-axis{padding-top:8px}
 .steam-record-readout{margin-top:8px;min-height:70px}
}

@media(max-width:700px){
 .steam-track{grid-template-columns:96px minmax(0,1fr);gap:8px}
 .steam-track-guide{left:104px}.steam-time-axis{margin-left:104px}
 .steam-track-label small{font-size:11px}
 .steam-linked-cursor>span{width:110px;max-width:110px;left:-70px;white-space:normal}
 .steam-action-marker>span{width:58px;max-width:58px;left:-18px;white-space:normal}
 .steam-demo[data-review=true] .steam-linked-cursor>span{display:none}
}

@media(max-width:700px){
 .steam-evidence,.steam-alternatives,.steam-action-record,.steam-effect-readout{display:none;position:relative;left:auto;right:auto;bottom:auto;margin:16px 0 0;transform:none}
 .steam-demo[data-phase=evidence] .steam-evidence{display:block}
 .steam-demo[data-phase=options] .steam-alternatives{display:grid}
 .steam-demo[data-phase=action] .steam-action-record{display:block}
 .steam-demo[data-phase=review] .steam-effect-readout{display:block}
}

/* Shared transport emphasis follows the selected website version. */
.steam-demo .steam-transport button{color:var(--anim-accent)}