.section.architecture-tour{display:block;background:#fff;scroll-margin-top:120px}
.arch-intro{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:64px;align-items:start}
.arch-intro h2{max-width:16ch}.arch-intro>p{font-size:24px;line-height:1.4;max-width:44ch}
.arch-query{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:24px 0 32px;font-size:14px;color:var(--muted)}
.arch-query strong{color:var(--ink);font-variant-numeric:tabular-nums}.arch-query a{margin-left:auto;min-height:44px;display:inline-flex;align-items:center}
.arch-layout{display:block;grid-template-columns:minmax(200px,1fr) minmax(0,3fr);gap:32px;align-items:start}
.arch-ready .arch-layout{display:grid}.arch-navigation{position:sticky;top:120px}.arch-navigation nav{display:grid;gap:4px}
.arch-navigation button{border:0;background:var(--quiet);color:var(--ink);font:inherit;min-height:48px;border-radius:8px;padding:12px 16px;text-align:left;transition:background-color .3s var(--ease),color .3s var(--ease)}
.arch-navigation button:hover{background:#d7e9eb}.arch-navigation button[aria-pressed=true]{background:var(--ink);color:#fff}.arch-navigation button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.arch-controls{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;gap:4px;margin-top:24px}.arch-controls button{text-align:center;font-size:14px;padding:8px}
.arch-controls [data-arch-play]{background:var(--accent);color:#fff}.arch-controls button:disabled{opacity:.45;cursor:default}.arch-stage-count{text-align:center;margin-top:12px;font-size:14px;font-variant-numeric:tabular-nums}
.arch-timing-note{font-size:14px;line-height:1.5;color:var(--muted);margin-top:16px}
.arch-panels{min-width:0}.arch-panel{margin:0 0 12px;background:var(--quiet);border-radius:16px;overflow:hidden}.arch-panel>summary{padding:24px;font-size:24px;font-weight:600;cursor:pointer;min-height:64px}
.arch-panel-body{padding:32px}.arch-panel-body>h3{font-size:30px;line-height:1.2;max-width:32ch}.arch-panel-body>p{margin-top:20px;font-size:18px;line-height:1.6}
.arch-ready .arch-panel{margin:0}.arch-ready .arch-panel>summary{display:none}.arch-ready .arch-panel:not(.is-active){display:none}
.arch-ready .arch-panel-body{animation:arch-enter .5s cubic-bezier(.16,1,.3,1) both}
.arch-visual{margin-top:28px;min-width:0}.arch-image-frame{background:#dce6ea;border-radius:8px;overflow:hidden}.arch-image-frame>img{width:100%;height:auto;image-rendering:auto}
.arch-live-frame{background:#0d2030;border-radius:8px;overflow:hidden;position:relative}.arch-live-frame>img{width:100%;height:auto;max-height:320px;object-fit:contain}.arch-live-frame canvas{display:none;width:100%;height:auto}.arch-live-frame.has-render canvas{display:block}.arch-live-frame.has-render>img{display:none}
.arch-live-caption{font-size:16px;font-weight:500;color:var(--ink);min-height:24px;margin-top:12px}.arch-visual-caption{font-size:14px;line-height:1.6;color:var(--muted);margin-top:16px}
.arch-channel-legend{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:16px;font-size:14px;color:var(--muted)}
.arch-source-planes{margin-top:16px;background:#fff;border-radius:8px;padding:0 16px}.arch-source-planes summary{font-size:16px;min-height:48px;padding:12px 0}.arch-source-planes img{padding-bottom:16px;width:100%}
.arch-dataflow{display:flex;gap:24px;align-items:stretch;margin-top:24px}.arch-node{background:#fff;padding:16px;border-radius:8px;flex:1;min-width:0;position:relative;display:flex;flex-direction:column;gap:8px}.arch-node:not(:last-child)::after{content:'→';position:absolute;right:-20px;top:50%;transform:translateY(-50%);color:var(--accent)}
.arch-node strong{font-size:24px;line-height:1.3}.arch-node span{font-size:14px;line-height:1.5}.arch-running .is-active .arch-node{animation:arch-node-beat 4.8s cubic-bezier(.33,1,.68,1) infinite}.arch-running .is-active .arch-node:nth-child(2){animation-delay:.5s}.arch-running .is-active .arch-node:nth-child(3){animation-delay:1s}
.arch-panel-body>.arch-transform{background:var(--ink);color:#fff;border-radius:8px;padding:20px 24px;font-size:16px;line-height:1.5;margin-top:24px}
.arch-why{margin-top:24px}.arch-why h4{font-size:18px;font-weight:600}.arch-why p{font-size:16px;line-height:1.6;margin-top:8px}
.arch-resolution-views{display:grid;grid-template-columns:1fr 1fr;gap:16px}.arch-resolution-views h4{font-size:16px;margin-bottom:12px}.arch-real-detail{overflow:hidden;border-radius:8px;background:#dce6ea}.arch-real-detail img{width:300%;max-width:none;transform:translateX(-33.3333%)}.arch-coarse img{filter:blur(2px)}
.arch-running [data-stage=c2f].is-active .arch-real-detail img{animation:arch-scale-read 4.8s cubic-bezier(.65,0,.35,1) infinite}
.arch-pair-output{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:12px 24px;background:var(--ink);color:#fff;border-radius:8px;margin-top:24px;padding:24px}.arch-pair-output strong{text-align:right;font-size:30px}.arch-pair-output span{font-size:18px}
.arch-history{display:none;width:100%;height:auto;background:#fff;border-radius:8px}.arch-history text{font-family:inherit;font-size:14px;fill:#465d69}.arch-trace{fill:none;stroke-width:3;stroke-linejoin:round;stroke-linecap:round}.arch-trace-rgb{stroke:#007c80}.arch-trace-event{stroke:#bd603f}
.arch-trace-legend{display:flex;gap:24px;margin-top:12px;font-size:14px}.arch-key-rgb::before,.arch-key-event::before{content:'';display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:8px;background:#007c80}.arch-key-event::before{background:#bd603f}.arch-support{margin-top:16px;font-size:16px}
.arch-feature-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:12px}.arch-feature-group{background:#fff;border-radius:8px;padding:20px 16px;display:flex;flex-direction:column;gap:8px}.arch-feature-group strong{font-size:36px;line-height:1}.arch-feature-group span{font-size:14px}.arch-field-title{font-weight:500;font-size:16px}
.arch-fusion-transform{display:flex;gap:24px;align-items:center;background:var(--ink);color:#fff;padding:24px;margin-top:24px;border-radius:8px}.arch-fusion-transform span{font-size:30px;white-space:nowrap}.arch-fusion-transform strong{font-size:20px;font-weight:400;line-height:1.5}.arch-measured{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}.arch-measured>div{display:flex;flex-direction:column;gap:8px;font-size:14px}.arch-measured strong{font-size:24px;line-height:1.2;font-variant-numeric:tabular-nums}
.arch-result-comparison{display:grid;grid-template-columns:1fr 1fr;gap:24px}.arch-result-comparison>div{display:flex;flex-direction:column;gap:20px;padding:24px;background:#fff;border-radius:8px;font-size:16px}.arch-result-comparison>div:first-child{background:var(--ink);color:#fff}.arch-result-comparison strong{font-size:48px;line-height:1;font-weight:600;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.arch-result-error{font-size:18px;margin-top:24px}.arch-inverse{font-size:20px;line-height:1.8;margin-top:24px;overflow-wrap:anywhere}.arch-scope{font-size:14px;line-height:1.7;color:var(--muted);margin-top:32px;max-width:100ch}
@keyframes arch-enter{from{opacity:.65;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@keyframes arch-node-beat{0%,100%{transform:translateY(0);opacity:1}25%{transform:translateY(-4px);opacity:.7}50%{transform:translateY(0);opacity:1}}
@keyframes arch-scale-read{0%,100%{transform:translateX(0)}50%{transform:translateX(-66.6667%)}}
@media(max-width:1000px){.arch-intro{gap:32px}.arch-layout{grid-template-columns:190px minmax(0,1fr);gap:24px}.arch-navigation button{font-size:14px}.arch-controls{grid-template-columns:36px minmax(0,1fr) 36px}.arch-panel-body{padding:24px}.arch-result-comparison strong{font-size:36px}.arch-fusion-transform{display:block}.arch-fusion-transform strong{display:block;margin-top:12px}.arch-navigation{top:136px}}
@media(max-width:760px){.arch-intro{display:block}.arch-intro>p{font-size:20px;line-height:1.5;margin-top:24px}.arch-query{display:block;padding:24px 0}.arch-query>span,.arch-query strong{display:block}.arch-query strong{margin-top:8px}.arch-query a{margin:8px 0 0}.arch-layout,.arch-ready .arch-layout{display:block}.arch-navigation{position:static;margin-bottom:24px}.arch-navigation nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.arch-navigation button{min-height:48px;padding:12px;font-size:14px}.arch-controls{grid-template-columns:48px minmax(0,1fr) 48px;gap:8px;margin-top:16px}.arch-controls button{font-size:16px}.arch-timing-note{margin-top:8px}.arch-stage-count{margin-top:8px}.arch-panel-body{padding:24px 20px}.arch-panel-body>h3{font-size:24px;line-height:1.3}.arch-panel-body>p{font-size:16px;margin-top:16px}.arch-panel>summary{font-size:20px;padding:20px}.arch-visual{margin-top:24px}.arch-live-caption{font-size:14px}.arch-dataflow{gap:16px}.arch-node{padding:12px;gap:8px}.arch-node strong{font-size:18px}.arch-node span{font-size:12px}.arch-node:not(:last-child)::after{right:-14px;font-size:14px}.arch-panel-body>.arch-transform{padding:16px;font-size:14px}.arch-why p{font-size:16px}.arch-feature-groups{gap:8px}.arch-feature-group{padding:16px 12px}.arch-feature-group strong{font-size:30px}.arch-feature-group span{font-size:12px}.arch-measured{grid-template-columns:1fr;gap:12px}.arch-measured>div{flex-direction:row;justify-content:space-between;align-items:center}.arch-measured strong{font-size:24px}.arch-result-comparison{grid-template-columns:1fr;gap:12px}.arch-result-comparison>div{padding:20px;gap:12px}.arch-result-comparison strong{font-size:36px}.arch-inverse{font-size:16px}.arch-resolution-views{gap:12px}.arch-resolution-views h4{font-size:14px}.arch-fusion-transform{padding:20px}.arch-fusion-transform strong{font-size:18px}.arch-pair-output{padding:20px}.arch-channel-legend{gap:8px}.arch-scope{font-size:14px}}
@media(prefers-reduced-motion:reduce){.architecture-tour *{animation:none!important;transition:none!important}}
@media(max-width:600px){.arch-navigation{min-width:0;margin-bottom:20px}.arch-navigation nav{display:flex;gap:8px;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin;padding:4px 0 8px;scroll-padding-inline:8px}.arch-navigation nav button{flex:0 0 auto;min-width:145px;min-height:44px;white-space:nowrap;text-align:center;padding:12px}.arch-controls{margin-top:8px;gap:8px;grid-template-columns:44px minmax(0,1fr) 44px}.arch-controls button{min-height:44px;font-size:14px}.arch-stage-count{font-size:12px;margin-top:8px}.arch-timing-note{font-size:12px;line-height:1.5;margin-top:8px;max-width:44ch}.arch-panel-body{padding-top:20px}}
@media print{.arch-navigation{display:none!important}.arch-panel{display:block!important;break-inside:avoid}.arch-panel-body{display:block}.arch-panel>summary{display:none}.arch-panel-body{padding:16px}.arch-layout{display:block}.arch-live-frame canvas{max-height:180px;object-fit:contain}}

.arch-ready .arch-history{display:block}.arch-history-fallback{font-size:16px;line-height:1.6}.arch-ready .arch-history-fallback{display:none}