/* Task preview, research evidence and compact app overview. */
.eco-task-lead{max-width:58em;color:#4c5c50}.eco-task-screens{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px;list-style:none;padding:0;margin:36px 0 28px}.eco-task-screens li{min-width:0;position:relative}.eco-task-screens figure{margin:0}.eco-page .eco-task-screens img{display:block;width:100%;height:340px;max-height:none;object-fit:contain;object-position:left top}.eco-task-screens figcaption{margin-top:24px;text-align:left}.eco-task-screens figcaption>span{display:block;font-size:11px;color:#738275;margin-bottom:10px}.eco-task-screens strong{display:block;color:#254d3d;font-size:18px;font-weight:600}.eco-task-screens figcaption p{margin:10px 12px 0 0;font-size:14px;line-height:1.8;color:#657460}.eco-task-screens li:not(:last-child):after{content:'→';position:absolute;right:0;top:385px;color:#8fa187}
.eco-section#context{border-top:0}.research-study{margin:24px 0 36px}.research-controls{position:sticky;top:var(--case-nav-height);background:#fbfbfb;z-index:5;padding:10px 0 14px}.research-methods{display:flex;gap:12px}.research-methods button{display:flex;align-items:center;gap:10px;font:inherit;font-size:15px;min-height:52px;padding:12px 20px;color:#536650;background:#f3f6ef;border:0;border-radius:14px;cursor:pointer;transition:background 160ms,color 160ms}.research-methods svg{display:block;width:24px;height:24px;flex:none}.research-methods button[aria-pressed=true]{background:#dfead4;color:#254d3d;font-weight:600}.research-methods button:hover{background:#e8efdf}.research-methods button:focus-visible{outline:2px solid #254d3d;outline-offset:3px}
.research-results .data-source{font-size:13px;line-height:1.7;margin:0 0 12px}.survey-finding{margin-top:16px;min-height:78px;padding-top:0}.survey-finding strong{font-size:17px;font-weight:600;color:#254d3d}.survey-finding p{font-size:15px;line-height:1.8;margin:8px 0 0;color:#536352}
.research-media{margin:0;min-width:0}.research-media [hidden]{display:none}.eco-site-photos{display:grid;margin:0}.eco-site-photos figure{grid-area:1/1;margin:0;opacity:0;visibility:hidden;transition:opacity 320ms ease,visibility 320ms}.eco-site-photos figure.is-active{opacity:1;visibility:visible}.eco-page .eco-site-photos img{display:block;width:100%;height:auto;border-radius:12px}.eco-site-photos figcaption{display:none}.eco-photo-controls{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:8px}.eco-photo-controls button{font:inherit;font-size:12px;color:#738275;min-height:44px;padding:8px 0;border:0;background:none;cursor:pointer;display:flex;align-items:center;gap:7px}.eco-photo-controls button:before{content:'';width:6px;height:6px;border-radius:50%;background:#dce5db}.eco-photo-controls button[aria-pressed=true]{color:#254d3d}.eco-photo-controls button[aria-pressed=true]:before{background:#738b69}.eco-research-board{margin:0}.eco-research-board a{display:block}.eco-page .eco-research-board img{display:block;width:100%;height:auto;aspect-ratio:4/3;max-height:none;object-fit:contain;object-position:center}.eco-research-board figcaption{display:grid;place-items:center;min-height:44px;font-size:12px;line-height:1.7;color:#738275;margin-top:8px;text-align:center}.research-orbit button:focus-visible,.eco-photo-controls button:focus-visible{outline:2px solid #254d3d;outline-offset:4px}
.eco-mechanism{margin:36px 0 44px;scroll-margin-top:calc(var(--case-nav-height) + 24px)}.eco-map-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.eco-map-heading h3{font-size:26px;margin:8px 0!important}.eco-map-heading>p{font-size:14px;color:#738275;margin-bottom:8px}.eco-map-heading .eco-kicker{font-size:13px;margin:0}.eco-app-map{padding-top:0}.eco-map-entry{display:flex;justify-content:center;align-items:center;gap:24px;margin-bottom:12px;color:#536650;font-size:14px}.eco-map-entry span{padding:8px 0}.eco-map-entry i{font-style:normal;color:#94a38c}.eco-map-tabs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;list-style:none;margin:0;padding:20px 0 0;position:relative;--map-gap:16px}.eco-map-tabs:before{content:'';position:absolute;top:0;left:calc((100% - 4 * var(--map-gap))/10);right:calc((100% - 4 * var(--map-gap))/10);border-top:2px solid #b2c4a9}.eco-map-tabs:after{content:"";position:absolute;left:50%;bottom:100%;height:12px;border-left:2px solid #b2c4a9}.eco-map-tabs li{position:relative;min-width:0}.eco-map-tabs li:before{content:'';position:absolute;top:-20px;height:20px;left:50%;border-left:2px solid #b2c4a9}.eco-map-node{position:relative;width:100%;height:100%;min-height:88px;padding:20px 14px;border:1px solid #d5ded0;border-radius:12px;background:#fff;color:#415340;font:inherit;text-align:left;cursor:pointer;transition:background 160ms,border-color 160ms}.eco-map-node small{display:block;font-size:11px;letter-spacing:.04em;color:#738275;margin-bottom:8px}.eco-map-node strong{display:block;font-size:19px;font-weight:600;line-height:1.5;margin-bottom:0;color:#254d3d}.eco-map-node[aria-pressed=true]{background:#edf3e7;border-color:#9db38e}.eco-map-node:is(:hover,:focus-visible){background:#f0f5eb}.eco-map-node:focus-visible{outline:2px solid #254d3d;outline-offset:4px}.eco-map-detail{margin-top:24px;border-radius:14px;background:#f4f7f0;display:grid;grid-template-columns:160px minmax(0,1fr);gap:32px;padding:28px 36px;align-items:center;min-height:285px}.eco-map-detail figure{margin:0}.eco-page .eco-map-detail img{display:block;width:100%;height:240px;max-height:none;object-fit:contain}.eco-map-copy{font-size:16px;line-height:1.9;color:#536650;max-width:42em;margin:0}
@media(max-width:63.99rem){.eco-map-tabs{gap:10px;--map-gap:10px}.eco-map-node{padding:16px 12px}.eco-map-node strong{font-size:17px}}
@media(max-width:47.99rem){.eco-task-screens{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 18px}.eco-page .eco-task-screens img{height:270px}.eco-task-screens strong{font-size:17px}.eco-task-screens li:after{display:none}.research-controls{padding:10px 0}.research-methods{gap:8px}.research-methods button{font-size:13px;padding:10px 8px;gap:6px;justify-content:center;flex:1}.research-methods svg{width:20px;height:20px}.research-study{margin-top:16px}
.research-media{margin-top:16px}.eco-page .eco-research-board img{height:auto}.eco-photo-controls{gap:8px}.eco-map-heading{display:block}.eco-map-heading>p{margin-top:12px}.eco-map-heading h3{font-size:22px}.eco-map-entry{gap:10px;flex-wrap:wrap;font-size:12px;justify-content:flex-start;margin-bottom:12px}.eco-map-entry span{padding:4px 0}.eco-map-tabs{display:flex;overflow-x:auto;gap:12px;padding:8px 4px 16px;scroll-snap-type:x proximity}.eco-map-tabs:before,.eco-map-tabs:after,.eco-map-tabs li:before{display:none}.eco-map-tabs li{flex:0 0 190px;scroll-snap-align:start}.eco-map-node{padding:16px;min-height:88px}.eco-map-detail{grid-template-columns:1fr;gap:20px;padding:24px 20px;margin-top:8px}.eco-map-detail figure{order:1}.eco-page .eco-map-detail img{height:280px}.eco-map-copy{font-size:16px}.eco-app-map:after{content:'左右滑动查看五个分区';display:block;font-size:12px;color:#738275;margin:0 4px 16px}}
@media(prefers-reduced-motion:reduce){.eco-map-node,.eco-site-photos figure,.research-methods button{transition:none}.eco-map-tabs{scroll-snap-type:none}}
.eco-page{--eco-green:#274b3c;--eco-tint:#f0f5ef}.eco-page main{padding-top:var(--case-nav-height)}.eco-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:48px;align-items:center;padding-block:48px 64px}.eco-kicker{font-size:16px;font-weight:500;color:var(--text-secondary);margin:0 0 16px}.eco-hero h1{font-size:clamp(34px,3.5vw,50px);font-weight:600;line-height:1.35;letter-spacing:0;margin:0 0 24px}.eco-intro{max-width:30em;line-height:1.8}.eco-hero dl{grid-template-columns:1fr;gap:16px;margin-top:32px}.eco-product{display:flex;align-items:center;justify-content:center;gap:16px;padding:40px 24px;background:var(--eco-tint);border-radius:16px;min-width:0}.eco-section{padding-block:48px;border-top:1px solid var(--border-subtle);scroll-margin-top:calc(var(--case-nav-height) + 24px)}.eco-section h2{font-size:30px;line-height:1.45;margin:0 0 32px}.eco-section h3{font-size:22px;line-height:1.5;margin:0 0 16px}.eco-material{border-top:1px solid var(--border-subtle)}.eco-material summary{cursor:pointer;min-height:56px;padding:16px 0;font-weight:500}.eco-material figure{max-width:1120px;margin:16px auto 32px}.eco-material img{width:100%;height:auto}.eco-material figcaption{margin-top:12px}.eco-page .back-top{z-index:40}
@media(max-width:63.99rem){.eco-hero{grid-template-columns:1fr;gap:32px}.eco-hero h1 br{display:none}.eco-intro{max-width:60ch}.eco-hero dl{grid-template-columns:1fr 1fr}.eco-product{max-width:760px;width:100%;margin-inline:auto}}
@media(max-width:47.99rem){.eco-hero{padding-block:32px 40px}.eco-hero h1{font-size:32px}.eco-hero dl{grid-template-columns:1fr}.eco-product{gap:8px;padding:24px 12px}.eco-section{padding-block:32px}.eco-section h2{font-size:25px;margin-bottom:24px}}
@media(max-width:47.99rem){.eco-hero{display:flex;flex-direction:column;align-items:stretch;gap:20px}.eco-hero>div:first-child{display:contents}.eco-hero>.eco-product{order:2;margin:0}.eco-hero .eco-kicker{order:0;margin:0}.eco-hero h1{order:1;margin:0}.eco-hero .eco-intro{order:3;margin:0}.eco-hero dl{order:4;margin-top:4px}}