:root{--paper:#f4f0e5;--ink:#342f27;--muted:#847c6d;--line:#d8ceba;--accent:#9e4c36;--white:#faf7ef;--serif:'Noto Serif SC','Songti SC',Georgia,serif;--sans:-apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--serif);font-size:14px}button,input{font:inherit}button{cursor:pointer;color:inherit;background:transparent;border:1px solid var(--line);border-radius:4px;padding:8px 12px;transition:background .18s,color .18s,border-color .18s}button:hover{background:#e9e2d3;border-color:#b7a58c}button:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px}header{height:64px;display:flex;align-items:center;gap:24px;padding:0 24px;border-bottom:1px solid #c5b99e;background:#f5f1e7;position:relative;z-index:3}.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink)}.seal{font:600 12px/1.05 var(--serif);border:1px solid #a24e38;padding:4px 5px;background:#a24e38;color:#f8efdb}.brand-name{font:700 29px var(--serif);letter-spacing:4px;color:#914732}.brand-sub{font-size:12px;color:#746b5d;letter-spacing:1px;margin-left:4px}.edition{margin-left:auto;font:10px var(--sans);letter-spacing:2px;color:#938875}header button{font:12px var(--sans);border-radius:20px;padding:7px 13px}main{display:grid;grid-template-columns:minmax(0,1fr) 340px;height:calc(100dvh - 64px);min-height:580px}.explorer{grid-column:2;grid-row:1;border-left:1px solid #c7bca6;display:flex;flex-direction:column;min-height:0;padding:26px 22px 0;background:var(--white);z-index:2;box-shadow:-5px 0 20px #54452a05}.eyebrow{font:10px var(--sans);font-weight:600;letter-spacing:2px;color:var(--accent)}h1{font:600 31px/1.4 var(--serif);letter-spacing:3px;margin:8px 0 10px}.intro{font-size:12px;line-height:1.9;color:#807565;margin:0 0 18px}#search{padding:11px 13px;background:#f1ecdf;border:1px solid #ddd2bc;border-radius:4px;width:100%;font:12px var(--sans);color:var(--ink)}.themes{display:flex;flex-wrap:wrap;gap:6px;margin:16px 0 12px}.themes button{font:11px var(--sans);padding:7px 8px;border-color:#ddd3bf}.themes .active{background:#8f4a37;border-color:#8f4a37;color:#fff8e9}.list-head{display:flex;justify-content:space-between;align-items:center;font:11px var(--sans);padding:14px 0;border-top:1px solid var(--line);color:var(--muted)}.list-head label{display:flex;align-items:center;gap:4px}input[type=checkbox]{accent-color:var(--accent)}#events{flex:1;overflow:auto;padding-bottom:18px;scrollbar-width:thin;scrollbar-color:#d4c6aa transparent}.event{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid #e4dac7;border-radius:0;padding:17px 1px}.event small{font:10px var(--sans);color:#887e6b;line-height:1.6;display:flex;gap:10px;justify-content:space-between}.event strong{display:block;font:600 15px/1.8 var(--serif);margin:6px 0 5px}.event em{font:11px var(--sans);color:#8d8271}.event:hover{background:#f0e9d9}.map-section{grid-column:1;grid-row:1;display:flex;flex-direction:column;position:relative;min-width:0;background:#e7e5d9}.map-head{position:absolute;top:22px;left:24px;right:24px;z-index:1;display:flex;justify-content:space-between;align-items:flex-start;pointer-events:none}.map-head>div:first-child{background:#f7f2e6de;padding:13px 18px;border:1px solid #d5c9b2;box-shadow:0 3px 12px #57462909}.map-head h2{font:600 20px var(--serif);letter-spacing:3px;margin:6px 0 0}.map-controls{display:flex;gap:5px;pointer-events:auto}.map-controls button{background:#fbf7edee;font:11px var(--sans);box-shadow:0 2px 4px #59472d08;padding:9px 11px}#map-wrap{position:relative;flex:1;min-height:0;overflow:hidden;background:radial-gradient(ellipse at 55% 35%,#e8e8dd,#ddded2)}#map{position:absolute;inset:0;width:100%;height:100%;touch-action:none;cursor:grab}#map:active{cursor:grabbing}#land path{fill:#f0ebdc;stroke:#a69e87;stroke-width:.6;vector-effect:non-scaling-stroke}#land path:hover{fill:#e2d6b9}.map-note{position:absolute;bottom:14px;left:22px;max-width:80%;pointer-events:none;font:10px/1.8 var(--sans);color:#817965;background:#f5f0e3c9;padding:6px 10px}.map-legend{position:absolute;top:112px;left:24px;font-size:11px;color:#807563;pointer-events:none}.marker{cursor:pointer}.marker circle{stroke:#fff8e5;stroke-width:2}.marker text{font:600 14px var(--serif);fill:#4a3928;paint-order:stroke;stroke:#fbf4e0;stroke-width:3.5px;stroke-linejoin:round}.marker:hover circle{stroke:#873d29;stroke-width:3}.time-panel{background:#f4efdf;border-top:1px solid #c7b99c;padding:15px 25px 17px}.time-top{display:flex;align-items:center;gap:16px}.time-top strong{font:600 32px Georgia,serif;color:#8f4a37;letter-spacing:1px}.time-top span{font:11px var(--sans);color:#8b7c65;flex:1}.time-top button{background:#fcf9f0;border-radius:50%;height:31px;width:31px;padding:0;font:14px var(--sans)}#year{width:100%;accent-color:#9e4c36;margin:15px 0 4px}.ticks{display:flex;justify-content:space-between;font:10px Georgia;color:#89775d}dialog{border:1px solid #bbaa89;padding:25px 34px;background:var(--white);color:var(--ink);width:min(820px,95vw);max-height:88dvh;border-radius:5px;box-shadow:0 20px 100px #49351d55}dialog::backdrop{background:#3e392e65;backdrop-filter:blur(3px)}.detail-top{display:flex;justify-content:space-between;align-items:center;position:sticky;top:-25px;background:var(--white);padding:7px 0;z-index:1}.detail-top button{border:0}#detail-content h2{font:600 31px/1.6 var(--serif);margin:20px 0 8px}#detail-content h3{font:600 20px var(--serif);margin:28px 0 15px;color:#8d4937}#detail-content p,#detail-content li{font-size:15px;line-height:2}#detail-content .meta{font:12px/1.8 var(--sans);color:var(--muted)}details{padding:18px 0;border-bottom:1px solid var(--line)}summary{cursor:pointer;font:600 15px/1.8 var(--serif)}details h4{font-size:16px}.source{font:11px/1.8 var(--sans)!important;color:var(--muted);overflow-wrap:anywhere}.milestone{display:flex;gap:14px;margin:10px 0;align-items:baseline}.milestone button{font:12px Georgia;padding:4px 7px}.milestone span{font-size:14px;line-height:1.8}.empty{padding:25px 0;font-size:13px;color:var(--muted);line-height:1.8}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:1000px){main{grid-template-columns:minmax(0,1fr) 300px}.explorer{padding:22px 18px 0}.brand-sub{display:none}.map-head{left:16px;right:16px}.edition{font-size:9px}.map-controls{flex-wrap:wrap;max-width:190px;justify-content:flex-end}}@media(max-width:700px){header{height:58px;padding:0 15px;gap:12px}.brand-name{font-size:23px;letter-spacing:2px}.edition{display:none}header button{margin-left:auto}main{height:auto;min-height:0;display:flex;flex-direction:column}.map-section{height:580px}.explorer{border-top:1px solid var(--line);border-left:0;max-height:720px;padding:24px 22px}.map-head{top:16px;gap:10px}.map-head>div:first-child{padding:10px 12px}.map-head h2{font-size:17px}.map-controls{max-width:170px}.map-controls button{font-size:10px;padding:8px}.map-note{left:12px;font-size:9px;max-width:90%}.map-legend{top:100px;left:17px}.time-panel{padding:12px 17px}.time-top{gap:11px}.time-top span{font-size:10px;line-height:1.6}.time-top strong{font-size:30px}#events{min-height:180px}.intro{margin-bottom:15px}dialog{padding:18px 22px}#detail-content h2{font-size:25px}}
/* Round 2: geographical texture and cartographic hierarchy. */
#map-wrap{background:#dce2dc}#relief{opacity:.58;mix-blend-mode:multiply;filter:sepia(.26)}
#land path{fill:#f5ecd32e;stroke:#8e846b;stroke-width:.65}#land path:hover{fill:#ba9d5d25}
#graticule path{fill:none;stroke:#797b6530;stroke-width:.6;stroke-dasharray:2 5;vector-effect:non-scaling-stroke}
#ocean-labels text{font:italic 10px Georgia,var(--serif);letter-spacing:3px;fill:#668078;opacity:.65;pointer-events:none}
.marker .hit-area{stroke:none}.marker .marker-halo{opacity:.17;stroke:none}.marker text{font-size:14px;font-weight:600;stroke:#faf1db;stroke-width:4px}.marker:hover .marker-halo{opacity:.4}
.compass{position:absolute;bottom:67px;right:24px;display:flex;align-items:center;flex-direction:column;color:#746b52;pointer-events:none;font:12px Georgia;opacity:.8}.compass svg{width:34px;height:45px}
#relief{opacity:.78;filter:sepia(.35) brightness(1.12);mix-blend-mode:multiply}#land path{fill:#eddfbd45;stroke:#877c64;stroke-width:.65}
/* Round 3: a selected-year narrative and six parallel time bands. */
.explorer h1{font-family:var(--serif);font-size:37px;font-weight:600;letter-spacing:1px}.year-story{position:absolute;bottom:64px;left:24px;width:355px;background:#faf6e9ed;border:1px solid #cbb991;box-shadow:0 8px 32px #5b4c2520;padding:18px 20px 15px;backdrop-filter:blur(8px)}.year-story[hidden]{display:none}.story-meta{display:flex;justify-content:space-between;gap:12px;font:10px/1.6 var(--sans);color:#8b7858}.story-meta>span:first-child{color:var(--accent);letter-spacing:2px;white-space:nowrap}.year-story h2{font:600 23px/1.6 var(--serif);margin:8px 0;color:#57402b}.year-story p{font:12px/1.95 var(--serif);color:#75664f;margin:0 0 13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.year-story button{font:11px var(--sans);border:0;border-top:1px solid #dbceb1;width:100%;text-align:left;border-radius:0;padding:12px 0 0;color:#94452e}.year-story button span{float:right}.time-panel{padding-top:12px}.time-top{margin-bottom:12px}.time-bands{display:flex;flex-direction:column;gap:4px}.band-row{display:flex;align-items:center;gap:12px;height:8px;transition:opacity .2s}.band-row.muted{opacity:.25}.band-label{padding:0;border:0;width:60px;flex:none;font:9px var(--sans);color:#877a62;text-align:right;white-space:nowrap}.band-track{height:5px;flex:1;position:relative;background:#ded3bc70}.time-event{position:absolute;top:0;bottom:0;padding:0;border:0;border-radius:1px;background:var(--band);opacity:.28;min-width:3px}.time-event.current{opacity:.65}.time-event:hover{opacity:1;background:var(--band);height:10px;top:-2px;z-index:3}.year-needle{position:absolute;top:-3px;bottom:-3px;width:1px;background:#8e3727;pointer-events:none;z-index:4}#year{margin-top:13px;height:6px;cursor:ew-resize}.ticks{margin-left:73px;position:relative;height:12px;margin-top:5px}.ticks span{position:absolute;transform:translateX(-50%)}.ticks span:nth-child(1){left:0}.ticks span:nth-child(2){left:27.27%}.ticks span:nth-child(3){left:63.64%}.ticks span:nth-child(4){left:100%}
@media(max-width:1100px){.year-story{width:300px}.year-story h2{font-size:20px}}@media(max-width:700px){.year-story{left:15px;bottom:45px;width:calc(100% - 80px);padding:12px 15px}.year-story p{display:none}.year-story h2{font-size:18px;margin:6px 0}.story-meta{font-size:9px}.year-story button{padding-top:8px}.compass{bottom:50px;right:15px}.map-section{height:690px}.time-top{margin-bottom:12px}.band-label{font-size:8px;width:49px}.band-row{gap:7px}.ticks{margin-left:56px}.time-panel{padding-bottom:13px}.map-note{bottom:8px;font-size:8px}}
/* Round 4: keep the geography visible while reading. */
#detail{position:fixed;top:64px;right:0;bottom:0;width:440px;z-index:5;background:var(--white);border-left:1px solid #bca987;overflow:auto;padding:0 27px 35px;box-shadow:-12px 0 32px #67553715;scrollbar-width:thin;scrollbar-color:#ccb995 transparent}#detail[hidden]{display:none}.reading main{grid-template-columns:minmax(0,1fr) 440px}.reading .explorer{visibility:hidden}.detail-top{top:0;padding:15px 0 10px;gap:10px;background:#faf7eff5}.detail-top button{padding:6px 8px;font:15px var(--sans)}#reader-nav{display:flex;gap:20px;border-bottom:1px solid #d8c7a5;padding:2px 0 10px;position:sticky;top:56px;background:var(--white);z-index:1}#reader-nav button{padding:5px 0;border:0;font:12px var(--sans);color:#8f4a37}#detail-content h2{font-size:27px;margin-top:22px}#detail-content p,#detail-content li{font-size:14px;line-height:2.05}#detail-content h3{padding-top:9px;border-top:1px solid #e0d3b9;margin-top:32px;scroll-margin-top:110px}#detail-content{scroll-margin-top:110px}.reader-wide #detail{width:min(800px,90vw)}.reading .year-story{display:none}.marker.selected .marker-halo{opacity:.4;stroke:#a44e32;stroke-width:1}.marker.selected text{fill:#8f3925}.layers{position:relative;padding:0;border:0;font-family:var(--sans)}.layers summary{font:11px var(--sans);padding:10px 12px;background:#fbf7edee;border:1px solid var(--line);border-radius:4px;list-style:none;white-space:nowrap}.layers summary:after{content:' ▾'}.layers>div{position:absolute;top:42px;right:0;width:155px;background:var(--white);border:1px solid var(--line);box-shadow:0 5px 20px #5e47251c;padding:12px;z-index:4}.layers label{display:flex;gap:8px;align-items:center;font:12px var(--sans);padding:6px 0}.hide-labels text{display:none}
@media(max-width:1000px){#detail{width:360px;padding:0 22px 25px}.reading main{grid-template-columns:minmax(0,1fr) 360px}}@media(max-width:700px){#detail{top:25dvh;width:100%;border-left:0;border-top:1px solid #bca987;border-radius:14px 14px 0 0;padding:0 23px 30px;box-shadow:0 -8px 35px #5e47252b}.reading main{display:flex}.reading .explorer{visibility:visible}.reader-wide #detail{top:58px;width:100%;border-radius:0}.detail-top{padding-top:12px}#reader-nav{top:51px}#detail-content h2{font-size:24px}.map-controls{max-width:175px}.layers summary{font-size:10px;padding:9px}}
/* Round 5: type detail, orientation, and control alignment. */
.brand-name{font-family:'Ma Shan Zheng',var(--serif);font-size:32px;font-weight:400;letter-spacing:3px}#country-labels text{font-family:var(--serif);font-weight:600;fill:#71634c;letter-spacing:2px;opacity:.65;paint-order:stroke;stroke:#f2e8d0;stroke-width:2px;pointer-events:none}#land path{stroke-width:.55}.marker text{letter-spacing:.3px}.year-display{display:flex;align-items:baseline;gap:7px;flex:none}.year-display input{font:600 31px Georgia,serif;color:#8f4a37;width:82px;padding:0;background:transparent;border:0;border-bottom:1px solid transparent;appearance:textfield;-moz-appearance:textfield}.year-display input::-webkit-inner-spin-button,.year-display input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.year-display input:hover,.year-display input:focus{border-bottom-color:#b78d68}.year-display>span:last-child{font:12px var(--serif);color:#9c7e60}#year{margin-left:73px;width:calc(100% - 73px)}.time-top #year-title{font-size:0}#detail-content .source{padding:9px 12px;background:#f0e9db;border-left:2px solid #c6af86}#detail-content ul{padding-left:22px}#detail-content details[open]>summary{color:#994d35}#detail-content details[open]{padding-bottom:23px}.time-event:focus-visible{outline-offset:3px;z-index:9;opacity:1}.event:focus-visible{outline-offset:-3px}.marker:focus-visible{outline:none}.marker:focus-visible circle:not(.hit-area){stroke:#843e2c;stroke-width:3}.event strong{font-weight:600}.intro{color:#706450}.map-note{color:#6f6655}.map-controls button:hover{background:#f0e4ce}#detail-content h3{letter-spacing:1px}
@media(max-width:700px){.brand-name{font-size:27px}.brand{gap:10px}.seal{font-size:10px}#year{margin-left:56px;width:calc(100% - 56px)}.year-display input{font-size:28px;width:73px}.year-display>span:last-child{display:none}#country-labels text{letter-spacing:0}.time-top span{min-width:0}.map-head h2{font-size:16px;letter-spacing:2px}.year-story{bottom:57px}.map-note{max-width:calc(100% - 24px);line-height:1.5}.year-story h2{line-height:1.5}.reader-wide #detail{top:0}#detail-content .source{font-size:10px!important}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(max-width:700px){.map-section{order:-1;flex:none}.map-controls{display:grid;grid-template-columns:repeat(3,auto);max-width:none;gap:4px}.map-controls #minus{grid-column:2}.map-controls button{min-width:30px}.map-head{left:12px;right:12px}.map-head>div:first-child{max-width:115px}.map-head h2{font-size:15px}.map-head .eyebrow{font-size:8px;letter-spacing:1px}}
/* Round 6: milestone playback, camera follow and cross-highlighting. */
.map-legend{position:static;margin-top:7px;font:10px var(--sans);letter-spacing:.5px}
#links path{fill:none;stroke-width:1.6;stroke-dasharray:5 4;opacity:.75;vector-effect:non-scaling-stroke;animation:march 1.6s linear infinite}@keyframes march{to{stroke-dashoffset:-18}}
.marker .pulse{stroke-width:2;transform-box:fill-box;transform-origin:center;animation:pulse 1.8s ease-out infinite}@keyframes pulse{from{transform:scale(.8);opacity:.9}to{transform:scale(2.6);opacity:0}}
.marker.selected text{font-size:16px}.marker.dim{opacity:.38}.marker{transition:opacity .4s}
.marker.linked .marker-halo{opacity:.55}.marker.linked text{fill:#8f3925}.marker.linked{opacity:1}
.event.current{background:#f3e9d4;box-shadow:inset 3px 0 0 var(--accent);padding-left:12px}.event.linked{background:#efe4cc}
.time-event.linked{opacity:1;height:9px;top:-2px;z-index:3}
.band-row{height:11px}.band-track{height:6px}
.ms-dot{position:absolute;top:50%;width:7px;height:7px;margin:-3.5px 0 0 -3.5px;padding:0;border-radius:50%;border:1px solid #fbf6e9;background:var(--band);opacity:.8;z-index:2}.ms-dot:hover{opacity:1;transform:scale(1.5);background:var(--band);border-color:#fff}.ms-dot.on{opacity:1;width:11px;height:11px;margin:-5.5px 0 0 -5.5px;border:2px solid #8e3727;z-index:5}
.year-needle{transition:left .5s ease}
.time-top .speed{width:auto;min-width:31px;border-radius:16px;padding:0 8px;font:11px var(--sans);color:#8b6a50}
.year-story{transition:opacity .3s}.year-story h2{margin:6px 0 4px}.story-parent{font:11px/1.6 var(--sans)!important;color:#937d5d!important;margin:0 0 8px!important;display:block!important}
.story-tools{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:0 0 10px;font:11px var(--sans);color:#7b6b52}
.follow{display:flex;align-items:center;gap:6px;cursor:pointer;user-select:none}.follow input{margin:0}
.story-step{display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;color:#9a8667}.story-step button{border:1px solid #dccdb0;border-radius:50%;width:24px;height:24px;padding:0;line-height:1;font:15px var(--sans);color:#8f4a37}
.year-story .story-open{border-top:1px solid #dbceb1}
.story-progress{position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--accent);transform-origin:left;animation:progress linear forwards}@keyframes progress{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.milestone button{white-space:nowrap}.milestone.on button{background:#8f4a37;color:#fff8e9;border-color:#8f4a37}
@media(max-width:700px){.map-legend{display:none}.year-story{bottom:52px}.story-tools{margin-bottom:6px}.story-parent{font-size:10px!important;margin-bottom:4px!important}.ms-dot{width:6px;height:6px;margin:-3px 0 0 -3px}}
@media(prefers-reduced-motion:reduce){#links path,.marker .pulse,.story-progress{animation:none}}
.ms-dot{width:5px;height:5px;margin:-2.5px 0 0 -2.5px;border:0;background:#fffaf0;box-shadow:0 0 0 1px var(--band);opacity:.9}.band-row.muted .ms-dot{opacity:.4}
.story-step button{display:inline-flex;align-items:center;justify-content:center;padding:0 0 2px}
/* Round 7: a slim note beside the pulsing place; multi-layer theme picking. */
.callout{position:absolute;left:0;top:0;z-index:2;width:232px;padding:9px 12px 10px 13px;text-align:left;background:#fbf7ecf2;border:1px solid #d6c7a6;border-left:3px solid var(--band);border-radius:2px;box-shadow:0 6px 22px #4f3d1f26;backdrop-filter:blur(6px);color:var(--ink)}
.callout:hover{background:#fffaf0;border-color:#bfa77c;border-left-color:var(--band)}
.callout:before{content:'';position:absolute;top:var(--py,24px);left:-21px;width:18px;border-top:1px solid var(--band);opacity:.8}.callout.left:before{left:auto;right:-21px}.callout.left{border-left-width:1px;border-right:3px solid var(--band)}
.callout[hidden]{display:none}.callout.enter{animation:co-in .45s ease-out}@keyframes co-in{from{opacity:0;clip-path:inset(0 100% 0 0)}to{opacity:1;clip-path:inset(0 0 0 0)}}
.co-meta{display:flex;justify-content:space-between;gap:8px;font:10px/1.5 var(--sans);letter-spacing:.5px;color:#8b7858}.co-meta b{color:var(--accent);font-weight:600;font-variant-numeric:tabular-nums}.co-meta span{color:#7a6a50;text-align:right}
.callout strong{display:block;font:600 15px/1.45 var(--serif);margin:3px 0 1px;color:#4a3626}.callout em{display:block;font:normal 10.5px/1.5 var(--sans);color:#957f5f}
.co-sum{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font:11.5px/1.75 var(--serif);color:#6f604a;margin-top:4px}
.year-story.compact{width:300px;padding:12px 16px 10px}.year-story.compact h2{font-size:17px;margin:4px 0 8px}.year-story.compact .story-sum,.year-story.compact .story-parent{display:none!important}.year-story.compact .story-open{padding-top:8px}
.story-tools{flex-wrap:wrap;row-gap:6px}.story-tools .follow{margin-right:auto}.story-tools .follow+.follow{margin-left:-2px}
.themes button[data-theme]:not([data-theme=""]){display:inline-flex;align-items:center;gap:6px}.themes button[data-theme]:not([data-theme=""]):before{content:'';width:7px;height:7px;border-radius:50%;background:var(--band);opacity:.85}
.themes .active[data-theme]:not([data-theme=""]){background:#fbf3e3;color:#5b3c28;border-color:var(--band);box-shadow:inset 0 0 0 1px var(--band)}
.themes-hint{flex-basis:100%;margin:2px 0 0;font:10.5px/1.6 var(--sans);color:#9a8b72}
.band-row.picked .band-label{color:#5b3c28;font-weight:600}
@media(max-width:700px){.callout{width:190px;padding:7px 10px 8px 11px}.callout strong{font-size:13.5px}.co-sum{display:none}.year-story.compact{width:calc(100% - 80px)}}
/* Round 8: the place note becomes a full revision card. */
.callout{width:440px;max-height:calc(100% - 20px);display:flex;flex-direction:column;padding:16px 20px 0 22px;border-left-width:4px;background:#fcf8eef7;box-shadow:0 12px 40px #4f3d1f30;cursor:default}
.callout.left{border-left-width:1px;border-right-width:4px}
.callout:before{top:var(--py,60px);left:-23px;width:20px;border-top-width:1.5px}.callout.left:before{right:-23px}
.co-meta{display:flex;align-items:baseline;gap:10px;font:11px/1.6 var(--sans)}.co-meta b{font-size:12px}.co-meta span{flex:1;color:#7a6a50;text-align:left}.co-meta .co-theme{flex:none;color:#9a8667}
.callout h3{font:600 23px/1.45 var(--serif);margin:6px 0 2px;color:#45301f;letter-spacing:.5px}
.co-parent{margin:0 0 6px;font:12px/1.6 var(--sans);color:#937d5d}
.co-body{overflow:auto;min-height:0;margin:0 -12px 0 0;padding:0 12px 6px 0;scrollbar-width:thin;scrollbar-color:#d4c3a2 transparent;border-top:1px solid #e2d6bd}
.callout .co-sum{display:block;-webkit-line-clamp:unset;font:14.5px/1.95 var(--serif);color:#4e4130;margin:10px 0 4px}
.co-body h4{font:600 12px/1.6 var(--sans);letter-spacing:1px;color:var(--accent);margin:12px 0 4px}
.co-body ul{margin:0;padding-left:18px}.co-body li{font:13.5px/1.85 var(--serif);color:#54452f}
.co-seq{list-style:none;margin:2px 0 4px;padding:0 0 0 10px;border-left:1px solid #dccdae}
.co-seq li{margin:0}.co-seq button{display:flex;gap:10px;width:100%;text-align:left;border:0;border-radius:2px;padding:3px 6px;font:13px/1.6 var(--serif);color:#6a5a43}.co-seq b{flex:none;width:92px;font:11px/2 var(--sans);color:#9a8667;font-variant-numeric:tabular-nums}
.co-seq li.on button{background:#f1e5cb;color:#3f2b1c;font-weight:600;box-shadow:-11px 0 0 -8px var(--band)}.co-seq li.on b{color:var(--accent)}
.co-foot{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #e2d6bd;margin-top:2px;padding:9px 0 11px;font:11px var(--sans);color:#a4927a}.co-foot button{border:0;padding:2px 0;font:12px var(--sans);color:#94452e}
.callout .story-progress{bottom:0;left:0;height:2px;background:var(--band)}
@media(max-width:1250px){.callout{width:380px}.callout h3{font-size:20px}.callout .co-sum{font-size:13.5px}}
@media(max-width:700px){.callout.dock{top:104px;left:10px;right:10px;width:auto;max-height:46%;padding:11px 14px 0 15px}.callout.dock:before{display:none}.callout h3{font-size:18px}.callout .co-sum{display:block;font-size:13px;line-height:1.85}.co-body li{font-size:12.5px}.co-seq b{width:78px}}
/* Study window: opens over the map without disturbing it; closing resumes playback. */
dialog.full{width:min(1040px,94vw);height:min(90dvh,960px);max-height:none;padding:0;display:flex;flex-direction:column;overflow:hidden;border:1px solid #bba987;border-radius:6px;background:var(--white)}
dialog.full:not([open]){display:none}dialog.full::backdrop{background:#3b3426a6;backdrop-filter:blur(2px)}
.full-top{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 40px 8px}.full-top .eyebrow{font-size:11px}
#full-close{flex:none;font:12px var(--sans);border-radius:16px;padding:7px 14px;background:#8f4a37;border-color:#8f4a37;color:#fff8e9}#full-close:hover{background:#7b3d2c}
#full-nav{display:flex;gap:22px;padding:2px 40px 10px;border-bottom:1px solid #d8c7a5}#full-nav button{padding:4px 0;border:0;font:12.5px var(--sans);color:#8f4a37}
#full-body{flex:1;overflow:auto;padding:0 40px 40px;scrollbar-width:thin;scrollbar-color:#ccb995 transparent}
#full-content{max-width:820px;margin:0 auto}
#full-content h2{font:600 34px/1.5 var(--serif);margin:26px 0 6px}#full-content h3{font:600 21px var(--serif);margin:34px 0 14px;padding-top:12px;border-top:1px solid #e0d3b9;color:#8d4937;letter-spacing:1px;scroll-margin-top:12px}
#full-content p,#full-content li{font-size:16px;line-height:2.05}#full-content .meta{font:13px/1.8 var(--sans);color:var(--muted)}#full-content ul{padding-left:22px}
#full-content .source{padding:9px 12px;background:#f0e9db;border-left:2px solid #c6af86}#full-content details[open]>summary{color:#994d35}#full-content details h4{font-size:17px}
@media(max-width:700px){dialog.full{width:100vw;height:100dvh;max-width:100vw;border-radius:0}.full-top{padding:14px 18px 6px}#full-nav{padding:2px 18px 8px}#full-body{padding:0 18px 30px}#full-content h2{font-size:26px}#full-content p,#full-content li{font-size:15px}}
.co-tools{display:none}
@media(max-width:700px){.callout.dock{top:auto;bottom:40px;max-height:52%}.note-docked .year-story{display:none}.co-hint{display:none}.co-tools{display:flex;align-items:center;gap:10px}.co-tools .follow{font-size:11px}.co-tools .story-step button{width:26px;height:26px}.co-foot{padding:7px 0 9px}}
.co-foot .story-step button{border:1px solid #dccdb0;border-radius:50%;padding:0 0 2px;color:#8f4a37}
.pace{flex:none;height:31px;padding:0 26px 0 12px;border:1px solid var(--line);border-radius:16px;background:#fcf9f0 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%238b6a50' stroke-width='1.3'/%3E%3C/svg%3E") no-repeat right 10px center;appearance:none;-webkit-appearance:none;font:11.5px var(--sans);color:#6f5a44;cursor:pointer}
.pace:hover{border-color:#b7a58c}.pace:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:700px){.pace{max-width:118px;padding:0 22px 0 9px;font-size:10.5px;text-overflow:ellipsis}}
.co-hint button{border:1px solid #dccdb0;border-radius:14px;padding:4px 12px;font:12px var(--sans);color:#7a5a40;background:#fffaf0}.co-hint button:hover{border-color:var(--band);color:#5b3c28}
.co-held{display:none;font:11px var(--sans);color:var(--accent)}.callout.held .co-held{display:inline}.callout.held .co-hint button[data-act=pause]{display:none}
.callout.held .story-progress{animation-play-state:paused}
/* Fold the chronicle list away. */
.panel-off main{grid-template-columns:minmax(0,1fr) 0}.panel-off .explorer{display:none}.panel-off.reading main{grid-template-columns:minmax(0,1fr) 440px}
#panel-toggle{white-space:nowrap}
@media(max-width:1000px){.panel-off.reading main{grid-template-columns:minmax(0,1fr) 360px}}
@media(max-width:700px){#panel-toggle{display:none}.panel-off .explorer{display:flex}}
/* Masthead: course name; Latin set in the body serif between calligraphic Chinese. */
.seal{font-size:17px;line-height:1;padding:5px 6px}.brand-name{white-space:nowrap}.brand-latin{font:600 .62em var(--serif);letter-spacing:.5px;vertical-align:.12em;margin:0 .1em}
@media(max-width:700px){.brand-name{font-size:21px;letter-spacing:1px}.seal{font-size:14px;padding:4px 5px}}
@media(max-width:380px){.brand-name{font-size:19px}}
@media(max-width:700px){#time-caption{display:none}}
@media(max-width:1200px){.edition{display:none}header button#language{margin-left:auto}}
/* Milestone route: where the focused event travels across its turning points. */
#links path.route{stroke-width:1.2;stroke-dasharray:2 4;opacity:.55;animation:none}
#links .route-stop{opacity:.85}