:root{--paper:#f7f5ed;--ink:#193e35;--green:#176755;--muted:#64776e;--line:#d9e1d5;--mint:#e7eedc;--yellow:#f6c95b;--blue:#79c5d0;--white:#fffef9;font-family:"Avenir Next","Trebuchet MS","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.52}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid #df8d29;outline-offset:4px}button{border:0}a{color:inherit;text-decoration:none}button{color:inherit}button:active:not(:disabled){transform:translateY(1px)}.topbar{max-width:1480px;margin:auto;padding:25px 44px 21px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid 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15px;line-height:1.13}.intro-text{font-size:14px;color:var(--muted);line-height:1.8;max-width:770px;margin:0}.day-card{flex-shrink:0;width:136px;text-align:center;padding:15px 10px;border-left:1px solid var(--line)}.day-card>span{font-size:11px;letter-spacing:1.5px;color:var(--muted)}.day-card strong{display:block;font:42px Georgia,serif;margin:7px}.day-card strong em{font-size:19px;font-style:normal;color:#83968b}.day-dots{display:flex;gap:5px;justify-content:center}.day-dots i{width:20px;height:4px;border-radius:4px;background:#dee4d6}.day-dots i.on{background:var(--green)}.stats{display:grid;grid-template-columns:repeat(4,1fr);margin:28px 0 22px;background:#ecefe2;border:1px solid #dfe4d5;border-radius:16px;padding:17px 0}.stat{padding:0 24px;border-right:1px solid #d3ddcc;display:flex;align-items:center;gap:14px}.stat:last-child{border:0}.stat-icon{font-size:25px;opacity:.65}.stat small{display:block;font-size:11px;color:var(--muted);margin-bottom:6px}.stat 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h2{font-family:"Songti SC",Georgia,serif;font-size:27px;font-weight:600;margin:11px 0;letter-spacing:-.5px}.description{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 20px}.activity{flex:1}.primary,.secondary{padding:13px 18px;border-radius:10px;font-weight:600;font-size:12px;min-height:45px}.primary{background:var(--green);color:white}.primary:hover{background:#0d5142}.secondary{background:#e9eddf;color:var(--green)}.full{width:100%;margin-top:18px}.button-row{display:flex;gap:9px;margin-top:15px}.button-row>*{flex:1}.hint{font-size:10px;line-height:1.8;color:#718174;margin:13px 0 0}.slider-top{display:flex;justify-content:space-between;font-size:11px;margin:14px 0 10px}.slider-top b{font-size:14px}.range{appearance:none;width:100%;height:8px;border-radius:10px;cursor:pointer;background:#e0e7d7;accent-color:var(--green)}.range::-webkit-slider-thumb{appearance:none;width:23px;height:23px;border:4px solid #fff;background:var(--green);border-radius:50%;box-shadow:0 0 0 1px 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.intro h1{font-size:clamp(31px,3.8vw,54px)}html[lang=en] .journey button{font-size:9px}html[lang=en] .workbench h2{font-size:25px}@media(min-width:1500px){main{padding-top:42px}.world{min-height:555px}.workbench{min-height:555px}}@media(max-width:1050px){.topbar{padding:22px 26px}main{padding:28px 26px 0}.game-layout{gap:16px;grid-template-columns:minmax(0,1.4fr) minmax(310px,1fr)}.workbench{padding:22px}.stat{padding:0 18px;gap:9px}.stat-icon{font-size:19px}.world{min-height:520px}.world-top{padding:19px 18px 0}.world-top .pill{display:none}.world-bottom{padding:0 18px 16px}.world-bottom p{font-size:11px}.journey button{font-size:9px}.field-note{gap:12px}}@media(max-width:760px){.topbar{padding:18px 19px}.brand{font-size:10px;letter-spacing:1.1px}.brand small{font-size:8px}.brand-mark{width:30px;height:35px;font-size:24px}.quiet{display:none}.lang{font-size:11px;padding:9px 11px}.top-actions{gap:5px}main{padding:26px 18px 0}.intro{gap:10px;align-items:flex-start}.intro 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@media(max-width:760px){.top-actions .quiet{display:block;font-size:10px;padding:8px 5px}.description{font-size:13px}}

/* Optional hands-on stage selection, with an independently saved practice mode. */
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/* A visible, responsive filling station: live water, target band and retained results. */
.prep-demonstration{display:flex;align-items:center;justify-content:center;gap:16px;height:65px;margin:8px 0 12px;overflow:hidden}.prep-particles{width:27px;display:grid;grid-template-columns:repeat(2,1fr);gap:3px}.prep-particles i{width:9px;height:9px;border-radius:50%;background:#d6bd70}.prep-arrow,.prep-conveyor{color:#749a83;font-size:18px}.prep-form{width:12px;height:29px;border:2px solid #739e93;border-radius:3px 3px 8px 8px;background:#b9dcd7;opacity:.3;transform-origin:bottom}.prep-empty-bottle{width:27px;height:43px;border:2px solid #739e93;border-radius:10px 10px 5px 5px;background:#ebf6ef;position:relative;opacity:.3;transform-origin:bottom}.prep-empty-bottle:before{content:'';position:absolute;top:-7px;left:7px;width:9px;height:7px;border:2px solid #739e93;border-bottom:0;border-radius:2px 2px 0 0}.prep-phase-1 .prep-form,.prep-phase-2 .prep-form,.prep-phase-3 .prep-form,.prep-phase-2 .prep-empty-bottle,.prep-phase-3 .prep-empty-bottle{opacity:1}.prep-conveyor{opacity:.3;letter-spacing:-4px}.prep-phase-3 .prep-conveyor{opacity:1}.prep-phase-0.working .prep-form{animation:preform-mold .8s both}.prep-phase-1.working .prep-empty-bottle{animation:bottle-blow .8s both}.prep-phase-2.working .prep-empty-bottle{animation:bottle-convey .8s both}.prep-demonstration.working .prep-arrow{animation:fill-stream-flow .4s infinite}
.filling-station{margin:18px 0 4px;border:1px solid #ccdcd0;border-radius:15px;background:#edf4eb;overflow:hidden}.filling-machine-head{display:flex;align-items:center;justify-content:space-between;padding:12px 13px;background:#d9e8d8;font-size:8px;letter-spacing:.6px;gap:8px;color:#3e6b58}.filling-machine-head b{font-size:10px;white-space:nowrap;letter-spacing:0}.filling-bays{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:14px 13px 13px}.fill-cell{position:relative;display:flex;align-items:center;flex-direction:column;padding-top:33px;min-width:0}.fill-nozzle{position:absolute;top:0;width:35px;height:12px;border-radius:3px;background:#6d9987;border:1px solid #517d6b}.fill-nozzle:after{content:'';position:absolute;left:13px;top:10px;width:7px;height:13px;background:#839f96;border-radius:0 0 3px 3px}.fill-stream{position:absolute;z-index:2;top:23px;width:4px;height:26px;background:repeating-linear-gradient(to bottom,#61bfc7 0 4px,#b3e3de 4px 8px);display:none;border-radius:2px}.is-filling .fill-cell.active .fill-stream{display:block;animation:fill-stream-flow .3s linear infinite}.fill-glass{position:relative;width:52px;height:116px;border:2px solid #a8bbb0;border-radius:13px 13px 8px 8px;background:#f9fcf4;box-shadow:inset 5px 0 #fff8;overflow:hidden;opacity:.28;isolation:isolate}.bottle-ready .fill-glass{opacity:1}.fill-cell.active .fill-glass{border-color:#517f68;outline:3px solid #e6d698;outline-offset:4px}.fill-water{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(100deg,#9ddadc,#67bdc8);min-height:0;max-height:100%;border-top:2px solid #b0e6e3;transition:height .05s linear;z-index:1}.fill-target-zone{position:absolute;z-index:3;left:0;right:0;top:2%;height:10%;background:#4d996b22;border-top:2px dashed #52855b;border-bottom:2px dashed #52855b}.fill-glint{position:absolute;z-index:4;left:7px;top:18px;bottom:10px;width:4px;border-radius:3px;background:#fff6}.fill-cell.in-target .fill-glass,.fill-cell.passed .fill-glass{border-color:#3c9867;outline-color:#bedeb9}.fill-cell.rework .fill-glass,.fill-cell.above-target .fill-glass{border-color:#b87848;outline-color:#ebceb0}.fill-cell.rework .fill-water{background:linear-gradient(100deg,#e4cf8f,#bfab69)}.fill-cell-number{font-size:8px;letter-spacing:.6px;margin-top:14px;color:#688371}.fill-readout{font-size:17px;font-variant-numeric:tabular-nums;font-weight:650;margin-top:4px}.fill-cell-state{font-size:9px;margin-top:5px;color:#728473;min-height:15px;white-space:nowrap}.fill-cell.passed .fill-cell-state{color:#2e8953;font-weight:600}.fill-cell.rework .fill-cell-state{color:#9c693b}.fill-live-panel{display:flex;gap:10px;align-items:center;padding:11px 13px;border-top:1px solid #d2dfcf;background:#f7faef;font-size:8px;letter-spacing:.5px}.fill-live-panel strong{font-size:20px;font-variant-numeric:tabular-nums;letter-spacing:-.5px;min-width:58px}.fill-live-panel b{margin-left:auto;font-size:9px}.fill-feedback{font-size:11px;line-height:1.7;min-height:55px;padding:10px 13px;border-top:1px solid #d7e3d2;color:#4b7359}.fill-feedback.under,.fill-feedback.over{background:#f6eadb;color:#976237}.fill-feedback.ok{background:#e4f0dc;color:#377b4f}.fill-main-control{min-height:53px;font-size:14px;touch-action:manipulation}.fill-main-control.fill-stop{background:#bb7745;box-shadow:0 0 0 3px #eddbc7}.fill-keyboard-hint{font-size:10px}.is-complete .fill-live-panel{display:none}.is-complete .fill-feedback{min-height:0;font-weight:600}.is-complete .fill-cell.passed .fill-glass{animation:fill-pass .45s ease-out}.filling-station+.success{margin-top:14px}.filling-station .fill-feedback:empty{display:none}
@keyframes fill-stream-flow{to{background-position-y:8px;opacity:.8}}@keyframes preform-mold{from{transform:scaleY(.2);opacity:.3}to{transform:scaleY(1);opacity:1}}@keyframes bottle-blow{from{transform:scaleX(.4);opacity:.3}to{transform:scaleX(1);opacity:1}}@keyframes bottle-convey{0%{transform:translateX(-10px)}100%{transform:translateX(18px)}}@keyframes fill-pass{50%{transform:translateY(-5px)}}
@media(max-width:760px){.fill-glass{height:123px;width:56px}.fill-feedback{font-size:11px}.fill-live-panel{padding:12px}.fill-main-control{min-height:56px}.fill-cell-state{font-size:9px}.prep-demonstration{gap:18px}}
@media(prefers-reduced-motion:reduce){.prep-demonstration *,.fill-stream,.fill-glass{animation:none!important}.fill-water{transition:none}}

/* Filling controls remain in one stable, compact view while the water moves. */
.filling-console{scroll-margin:12px;overflow-anchor:none}.filling-console .filling-station{margin-bottom:12px}.prep-ready-summary{padding:11px 12px;border:1px solid #cbdcc3;background:#edf4e5;border-radius:9px;font-size:11px;line-height:1.6;color:#477050}.filling-console .fill-main-control{margin:0}.filling-console .fill-feedback{height:70px;min-height:70px;overflow:auto}.filling-console .fill-live-panel{padding:8px 13px}.filling-console .fill-glass{height:108px}.filling-console .fill-cell-number{margin-top:10px}.filling-console .filling-bays{padding-top:10px;padding-bottom:10px}
@media(max-width:760px){.filling-console .fill-main-control{min-height:52px}.filling-console .fill-feedback{font-size:10px;line-height:1.6}.filling-console .fill-cell-state{font-size:8px}.filling-console .fill-readout{font-size:16px}}
@media(max-height:560px){.filling-console .fill-glass{height:70px}.filling-console .filling-bays{padding-top:6px;padding-bottom:6px}.filling-console .fill-feedback{height:58px;min-height:58px;padding:7px 10px}.filling-console .fill-live-panel{padding:5px 10px}.filling-console .filling-machine-head{padding:8px 10px}}