:root{--font:Inter,'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;--mono:'JetBrains Mono','SF Mono',Consolas,monospace;--number:Barlow,Inter,sans-serif}
*{box-sizing:border-box}html{background:var(--jm-bg-canvas);color:var(--jm-text-1);font-synthesis:none}body{margin:0;}button,input,select{}button,a,input,select{touch-action:manipulation}button,select{cursor:pointer}button{color:inherit}a{color:var(--jm-text-2);text-underline-offset:4px}h1,h2,h3,p{margin:0}button:disabled{cursor:default}svg{display:block}[hidden]{display:none!important}:focus-visible{outline:2px solid var(--jm-focus-ring);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.page-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 40px;border-bottom:1px solid var(--jm-divider)}.identity{color:var(--jm-text-1);text-decoration:none}.identity span{border-left:1px solid var(--jm-border);margin-left:18px;padding-left:18px}.header-right{display:flex;align-items:center;gap:24px}.review-status{color:var(--jm-text-3)}.edition{color:var(--jm-text-3);}main{max-width:1440px;padding:0 40px 48px;margin:0 auto}.intro{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:36px 0 28px}.eyebrow{color:var(--jm-text-3);margin-bottom:9px}h1{}.intro-copy{margin-top:8px;color:var(--jm-text-2)}.preferences{display:grid;grid-template-columns:auto auto;align-items:center;gap:6px 20px;color:var(--jm-text-2)}.theme-label{display:flex;gap:10px;align-items:center}.checkbox-label{display:flex;gap:8px;align-items:center;cursor:pointer}.preference-note{grid-column:1/-1;text-align:right;color:var(--jm-text-3)}input[type=checkbox]{accent-color:var(--jm-brand);width:14px;height:14px;margin:0}select{min-height:32px;padding:0 26px 0 10px;border:1px solid var(--jm-control-border);border-radius:var(--radius-control);background:var(--jm-bg-surface);color:var(--jm-text-1);}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.section-heading>div{display:flex;align-items:baseline;gap:14px}.section-number{color:var(--jm-text-3)}h2{}.small-note{color:var(--jm-text-3)}
.brand-stage{position:relative;min-height:390px;border:1px solid var(--jm-border);border-radius:var(--radius-card);overflow:hidden;background:var(--jm-bg-canvas)}.stage-corner{position:absolute;top:23px;left:25px;display:flex;flex-direction:column;gap:3px;color:var(--jm-text-3)}.stage-corner>span:first-child{color:var(--jm-text-2);}.brand-visual{width:min(600px,100%);height:340px;margin:-1px auto 0;pointer-events:none}.brand-visual svg{width:100%;height:100%}.stage-message{position:absolute;left:20px;right:20px;bottom:69px;text-align:center}.stage-message h3{}.stage-message p{color:var(--jm-text-3);margin-top:6px}.stage-message .button{margin-top:12px}.brand-stage[data-phase=error] .stage-message{bottom:44px}.brand-stage[data-phase=error] .stage-message h3{color:var(--jm-bad-fg)}.stage-bottom{position:absolute;left:25px;right:25px;bottom:17px;display:flex;align-items:center;justify-content:space-between;color:var(--jm-text-3)}.stage-bottom>span:first-child{}.ready-content{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:32px;text-align:center}.ready-symbol{margin-bottom:16px;color:var(--jm-text-1)}.ready-content h3{}.ready-content p{color:var(--jm-text-3);margin:9px 0 24px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:34px;padding:5px 13px;border:1px solid var(--jm-control-border);border-radius:var(--radius-control);background:var(--jm-bg-surface);color:var(--jm-text-1);text-decoration:none;white-space:nowrap}.button:hover{background:var(--jm-bg-hover)}.button:active{background:var(--jm-bg-selected)}.button.primary{background:var(--jm-brand-solid);color:var(--jm-brand-on);border-color:var(--jm-brand-solid)}.button.primary:hover{background:var(--jm-brand-solid-hover);border-color:var(--jm-brand-solid-hover)}.button.primary:active{background:var(--jm-brand-solid-active);border-color:var(--jm-brand-solid-active)}.button:disabled{color:var(--jm-text-disabled);background:var(--jm-bg-sunken);border-color:var(--jm-border)}.button.compact{min-height:28px;padding:2px 10px;}.demo-controls{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-top:18px}.action-row{display:flex;gap:8px;flex-wrap:wrap}.progress-controls{display:flex;flex-direction:column;align-items:flex-end;gap:10px;color:var(--jm-text-3)}.progress-controls label{display:flex;align-items:center;gap:10px}.progress-controls select{min-height:34px}.determinate-control{width:270px}.determinate-control input{width:100px;min-width:60px;flex:1}.determinate-control output{width:30px;text-align:right;}input[type=range]{height:20px;padding:0;margin:0;accent-color:var(--jm-brand);cursor:pointer}.timeline-panel{margin-top:22px;padding:20px 0;border-top:1px solid var(--jm-divider);border-bottom:1px solid var(--jm-divider)}.timeline-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:10px;}.timeline-heading label span{color:var(--jm-text-3);margin-left:12px}.timeline-heading>div{display:flex;align-items:center;gap:16px}.timeline-heading output{min-width:60px;text-align:right}.timeline-panel>input{width:100%;display:block}.timeline-labels{display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--jm-text-3);margin-top:5px}.timeline-panel .small-note{margin-top:13px;}
.rhythm-section,.mapping-section{padding-top:32px}.rhythm-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--jm-border);border-radius:var(--radius-card);overflow:hidden}.rhythm-card{padding:20px 24px;min-width:0}.rhythm-card+.rhythm-card{border-left:1px solid var(--jm-divider)}.rhythm-meta{display:flex;align-items:baseline;justify-content:space-between;gap:8px;color:var(--jm-text-3)}.rhythm-meta strong{color:var(--jm-text-1);font-variant-numeric:tabular-nums;white-space:nowrap}.rhythm-sample{height:124px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.rhythm-card h3{margin-bottom:5px}.rhythm-card p{color:var(--jm-text-3);}.selection-demo{display:flex;align-items:center;gap:12px;padding:10px 14px;width:100%;max-width:160px;border:1px solid var(--jm-border);border-radius:var(--radius-control);background:var(--jm-bg-surface);}.selection-demo[aria-pressed=true]{background:var(--jm-bg-selected)}.selection-tick{height:16px;width:2px;background:var(--jm-border)}.selection-demo[aria-pressed=true] .selection-tick{background:var(--jm-brand)}.feedback-demo{display:flex;align-items:center;gap:8px;padding:9px 13px;background:var(--jm-bg-raised);border:1px solid var(--jm-border);border-radius:var(--radius-control);box-shadow:var(--jm-shadow-1);}.feedback-demo>span{}.drawer-anchor{width:80px;display:flex;gap:8px;flex-direction:column}.drawer-anchor span{height:3px;width:48px;background:var(--jm-border)}.drawer-anchor span+span{width:30px}.drawer-demo{width:100px;min-height:77px;padding:10px 12px;border:1px solid var(--jm-border);border-radius:var(--radius-control);background:var(--jm-bg-surface);position:absolute;right:16px}.drawer-demo i,.spatial-demo i{display:block;background:var(--jm-border);height:2px;width:100%;margin-top:11px}.drawer-demo i+i{width:65%;margin-top:7px}.spatial-sample{max-width:200px;margin:auto}.spatial-track{position:absolute;left:16px;right:16px;top:62px;height:1px;background:var(--jm-border)}.spatial-demo{position:relative;width:50px;height:65px;padding:8px;border:1px solid var(--jm-border-strong);border-radius:var(--radius-card);background:var(--jm-bg-surface);transform:translateX(42px)}.spatial-demo span{color:var(--jm-text-3)}.spatial-demo i{margin-top:7px}.spatial-demo i+i{width:66%}.rhythm-note{margin-top:12px;color:var(--jm-text-2)}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;white-space:nowrap}th{color:var(--jm-text-3);padding:10px 16px 10px 0;border-bottom:1px solid var(--jm-border)}td{padding:12px 16px 12px 0;border-bottom:1px solid var(--jm-divider);color:var(--jm-text-2)}td:first-child{color:var(--jm-text-1)}td:nth-child(2),td:nth-child(3){}td:last-child{color:var(--jm-text-3)}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:24px;color:var(--jm-text-3)}.principles strong{display:block;margin-bottom:6px;color:var(--jm-text-2)}footer{max-width:1360px;margin:0 auto;padding:18px 0 24px;border-top:1px solid var(--jm-divider);display:flex;justify-content:space-between;gap:16px;color:var(--jm-text-3)}footer a{color:var(--jm-text-3)}.load-error{padding:20px 0;color:var(--jm-bad-fg)}
@media(min-width:1500px){.brand-stage{min-height:420px}.brand-visual{margin-top:14px}.stage-message{bottom:75px}}
@media(max-width:1000px){.page-header{padding:16px 24px}main{padding:0 24px 36px}.demo-controls{flex-wrap:wrap}.progress-controls{align-items:flex-start;flex-direction:row;flex-wrap:wrap;gap:16px}.rhythm-card{padding:16px}.rhythm-meta{align-items:flex-start;flex-direction:column;gap:3px}.rhythm-sample{height:112px}.drawer-demo{right:4px}footer{margin:0 24px}.edition{display:none}}
@media(max-width:680px){.page-header{padding:14px 18px}.identity{}.identity span{margin-left:12px;padding-left:12px}.header-right{gap:0}.review-status{}main{padding:0 18px 28px}.intro{padding-top:26px;align-items:flex-start;flex-direction:column;gap:20px}h1{}.preferences{width:100%;grid-template-columns:1fr auto}.preference-note{text-align:left}.theme-label{justify-content:flex-start}.section-heading{gap:10px}.section-heading>div{gap:10px}h2{}.small-note{}.brand-stage{min-height:345px}.stage-corner{top:16px;left:16px;}.brand-visual{height:290px;width:100%;margin:0 auto}.stage-message{bottom:66px}.stage-message h3{}.stage-message p{}.stage-bottom{left:16px;right:16px;}.button,select{min-height:44px}.action-row{gap:8px;width:100%}.action-row .button{flex:1 1 auto}.progress-controls{width:100%;gap:12px}.progress-controls label{flex-wrap:wrap}.timeline-heading label span{display:block;margin:2px 0 0;}.timeline-heading>div{gap:10px}.timeline-heading output{}.timeline-labels{}.timeline-panel .small-note{}.rhythm-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.rhythm-card{padding:16px}.rhythm-card:nth-child(3){border-left:0}.rhythm-card:nth-child(n+3){border-top:1px solid var(--jm-divider)}.rhythm-card p{}.rhythm-meta{flex-direction:row;align-items:baseline}.rhythm-meta strong{}.rhythm-meta>span{}.rhythm-note{}.principles{grid-template-columns:1fr;gap:16px}.principles strong{margin-bottom:3px}footer{margin:0 18px;flex-direction:column;gap:8px}.ready-content h3{}.ready-content p{}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important}}

/* Complete typography roles are loaded from typography-density.json. */
body{font:var(--type-body,400 14px/22px system-ui);letter-spacing:var(--track-body,0)}
button,input,select{font:inherit}
.identity{font:var(--type-titleSection);letter-spacing:var(--track-titleSection)}
.identity span,.preferences,.theme-label,.checkbox-label,.progress-controls label,.timeline-heading>label,.stage-message h3,.rhythm-card h3,.principles strong{font:var(--type-label);letter-spacing:var(--track-label)}
.review-status,.edition,.eyebrow,.preference-note,.small-note,.stage-corner,.stage-corner>span:first-child,.stage-message p,.stage-bottom,.stage-bottom>span:first-child,.ready-content p,.timeline-heading label span,.timeline-panel .small-note,.rhythm-meta,.rhythm-meta>span,.rhythm-card p,.feedback-demo,.drawer-demo,.rhythm-note,.principles,footer,th,td:last-child{font:var(--type-caption);letter-spacing:var(--track-caption)}
h1{font:var(--type-titleHero);letter-spacing:var(--track-titleHero)}
h2{font:var(--type-titleCard);letter-spacing:var(--track-titleCard)}
.intro-copy{font:var(--type-body);letter-spacing:var(--track-body)}
.ready-content h3{font:var(--type-titlePage);letter-spacing:var(--track-titlePage)}
.ready-symbol{font:var(--type-titleHero);letter-spacing:var(--track-titleHero)}
.button,.button.compact,select,.selection-demo{font:var(--type-controlCompact);letter-spacing:var(--track-controlCompact)}
.section-number,.timeline-heading output,.timeline-labels,.determinate-control output,.spatial-demo span{font:var(--type-numberCaption);letter-spacing:var(--track-numberCaption);font-variant-numeric:tabular-nums}
.rhythm-meta strong{font:var(--type-number20);letter-spacing:var(--track-number20)}
table{font:var(--type-table);letter-spacing:var(--track-table)}
td:nth-child(2),td:nth-child(3){font:var(--type-numberTable);letter-spacing:var(--track-numberTable)}
.timing-notes{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:12px;font:var(--type-caption);color:var(--jm-text-3)}
@media(max-width:680px){.button,.button.compact,select,.selection-demo{min-height:44px;font:var(--type-controlTouch);letter-spacing:var(--track-controlTouch)}select{font:var(--type-inputTouch);letter-spacing:var(--track-inputTouch)}.checkbox-label{min-height:44px}.timeline-heading{align-items:flex-start}.rhythm-meta{flex-wrap:wrap}.stage-corner{top:14px}.brand-stage{min-height:370px}.stage-message{bottom:69px}.stage-message p{max-width:28em;margin-left:auto;margin-right:auto}.stage-bottom{align-items:flex-end;gap:16px}.stage-bottom>span:last-child{text-align:right}.timeline-panel>input{height:44px}.progress-controls input[type=range]{height:44px}.determinate-control{width:100%}.timeline-heading>div{flex-shrink:0}}
@media(pointer:coarse){.button,.button.compact,select,.selection-demo{min-height:44px;font:var(--type-controlTouch);letter-spacing:var(--track-controlTouch)}select{font:var(--type-inputTouch);letter-spacing:var(--track-inputTouch)}.checkbox-label{min-height:44px}input[type=range]{min-height:44px}}