.civilization-page{width:min(1480px,calc(100% - 72px));margin:0 auto;padding:27px 0 25px}.civilization-heading{padding:70px 0 35px;max-width:850px}.civilization-heading h1{margin:15px 0;font:500 clamp(40px,5.5vw,68px)/1.15 "Songti SC",serif;letter-spacing:-.06em}.civilization-heading p:last-child{max-width:650px;margin:0;color:#625e54;font:16px/1.9 "Songti SC",serif}.world-panel{position:relative;height:clamp(460px,55vw,690px);overflow:hidden;border:1px solid var(--line);background:#dfe4df;box-shadow:0 18px 42px rgba(65,52,36,.08)}#world-map{width:100%;height:100%;background:#dfe4df}.leaflet-tile{filter:saturate(.72) sepia(.08) brightness(1.06)}.leaflet-control-attribution{font-size:9px!important;background:rgba(247,243,234,.82)!important}.map-overlay{position:absolute;z-index:500;top:22px;left:22px;width:min(330px,calc(100% - 44px));padding:16px 18px;background:rgba(247,243,234,.94);border-left:3px solid var(--accent);box-shadow:0 5px 18px rgba(48,43,34,.13)}.map-kicker{display:block;color:#8d8577;font-size:10px;letter-spacing:.12em}.map-overlay strong{display:block;margin-top:7px;color:var(--accent);font:500 25px "Songti SC",serif}.map-overlay span:nth-of-type(2){display:block;margin-top:3px;color:#635c50;font:12px Georgia,"Songti SC",serif}.map-overlay p{margin:10px 0 0;color:#6f685c;font:12px/1.7 "Songti SC",serif}.map-legend{position:absolute;z-index:500;bottom:15px;left:17px;display:flex;gap:14px;padding:7px 10px;color:#5f594f;background:rgba(247,243,234,.88);font-size:10px}.map-legend span{display:inline-flex;align-items:center;gap:6px}.map-legend i{display:inline-block;width:13px;height:8px;border:1px solid}.legend-china{border-color:#9b452d!important;background:rgba(155,69,45,.2)}.legend-world{border-color:#58736b!important;background:rgba(88,115,107,.18)}.legend-city{width:8px!important;height:8px!important;border-radius:50%;border-color:#4a453c!important;background:#f7f3ea}.civilization-tooltip{border:1px solid rgba(71,64,52,.2);border-radius:2px;color:#433b31;background:rgba(247,243,234,.94);font:10px "Songti SC",serif;box-shadow:0 1px 4px rgba(43,38,30,.12)}.era-controls{margin-top:35px;padding:24px 22px 18px;border:1px solid var(--line);background:rgba(247,243,234,.45)}.era-header{display:flex;justify-content:space-between;align-items:end}.era-header h2{margin:7px 0 0;font:500 27px "Songti SC",serif}.era-arrows{display:flex;align-items:center;gap:12px;color:#81796b;font:11px Georgia,serif}.era-arrows button{width:32px;height:30px;border:1px solid var(--line);color:var(--ink);background:transparent;font-size:17px;cursor:pointer}.era-track{display:grid;grid-template-columns:repeat(8,minmax(110px,1fr));gap:0;margin-top:25px;border-top:1px solid rgba(155,69,45,.4)}.era-button{position:relative;display:grid;gap:5px;min-height:100px;padding:17px 10px 9px;border:0;border-right:1px solid rgba(47,43,34,.1);color:#70695c;background:transparent;text-align:left;cursor:pointer}.era-button::before{content:"";position:absolute;top:-6px;left:10px;width:10px;height:10px;border:1px solid #a79d8c;border-radius:50%;background:var(--paper-light)}.era-button span{color:#938c7f;font:10px Georgia,serif}.era-button strong{color:#625d52;font:500 16px "Songti SC",serif}.era-button small{color:#938c7f;font:9px Georgia,"Songti SC",serif;white-space:nowrap}.era-button[aria-selected="true"]{background:rgba(155,69,45,.08)}.era-button[aria-selected="true"]::before{border-color:var(--accent);background:var(--accent);box-shadow:0 0 0 4px rgba(155,69,45,.12)}.era-button[aria-selected="true"] strong{color:var(--accent)}.timeline-hint{margin:11px 0 0;color:#9a9283;font-size:10px;text-align:center}.comparison-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:22px}.comparison-cards article{padding:22px 24px;border-top:3px solid var(--accent);background:rgba(247,243,234,.68)}.comparison-cards article+article{border-top-color:#58736b}.card-kicker{color:var(--accent);font-size:10px;font-weight:700;letter-spacing:.13em}.world-kicker{color:#58736b}.comparison-cards h2{margin:10px 0 7px;font:500 22px "Songti SC",serif}.comparison-cards p{margin:0;color:#6c665a;font:13px/1.8 "Songti SC",serif}.comparison-note{margin:18px 0 0;color:#8b8375;font:12px/1.7 "Songti SC",serif}@media(max-width:800px){.civilization-page{width:calc(100% - 36px)}.civilization-heading{padding:58px 0 30px}.civilization-heading h1{font-size:45px}.world-panel{height:500px}.era-track{display:flex;overflow-x:auto}.era-button{min-width:130px}.comparison-cards{grid-template-columns:1fr}.map-overlay{top:12px;left:12px}.map-legend{left:10px;bottom:10px}}