:root{--bg:#f5f2eb;--surface:#ffffff;--line:#ddd8cd;--text:#283c3d;--muted:#627471;--gold:#94652b;--teal:#2e7668;--serif:Georgia,'Times New Roman',serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,sans-serif;font-size:14px}button,input{font:inherit}button,a,input{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--gold);outline-offset:4px}button{border:0;background:none;color:inherit}a{color:var(--teal)}header{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 5%}.brand{text-decoration:none;color:var(--text);display:flex;gap:12px;align-items:center;font-size:19px;letter-spacing:2px}.brand-icon{font-size:42px;color:var(--gold);line-height:1}.brand 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var(--line);font-size:9px;letter-spacing:1.3px;color:var(--muted)}[hidden]{display:none!important}@media(min-width:1500px){.workspace{grid-template-columns:minmax(0,1fr) 350px}}@media(max-width:1000px){header{padding:0 4%;height:80px}main{padding:30px 4% 0}.workspace{grid-template-columns:minmax(0,1fr) 280px}.intro{gap:15px}.intro .primary{font-size:12px;padding:13px}.time-tag{display:none}.search{width:180px}#expedition-grid{gap:13px}.exp-content{padding:18px}.exp-content h2{font-size:24px}.exp-content p{min-height:100px}.bottom-strip{font-size:10px}.bottom-strip span:nth-child(2){display:none}}@media(max-width:760px){header{height:auto;min-height:76px;flex-wrap:wrap;padding:18px 5% 0}.brand{font-size:16px}.brand-icon{font-size:35px}.brand small{font-size:7px}.help-button{margin-left:auto}nav{order:3;width:100%;height:48px;margin-top:10px;justify-content:center;gap:30px}nav button{font-size:12px}main{padding:27px 5% 0}.intro{display:block;margin-bottom:24px}.intro 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/* Readable paper atlas, contextual lessons and daily journey */
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h3{margin:5px 0 10px}.compare-table td:first-child{background:#f7f8f2;color:#52675b;font-size:11px;min-width:140px}.compare-table small{color:#47766a}.compare-table button{color:#875b27;text-decoration:underline;text-underline-offset:3px;font-size:12px;text-align:left;padding:0}#compare-cards{display:block}.story-search{display:block;margin:25px 0}.story-search input{width:100%;max-width:520px;border:1px solid #cbd7ca;border-radius:4px;background:#fff;padding:14px 16px;color:var(--text)}#story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.story-card{padding:23px;background:#fff;border:1px solid var(--line);border-radius:5px;text-align:left}.story-card small{color:#467768;font-size:10px}.story-card p{color:var(--muted);line-height:1.8;font-size:12px}.story-card:hover{border-color:#7c9c82}.story-card span{font-size:12px;color:#875b27}#story-article{max-width:940px;margin:auto;background:#fff;border:1px solid var(--line);padding:40px;border-radius:7px}#story-article h1{font-size:43px}#story-article h2{font-size:28px;margin-top:28px}#story-article p{font-size:15px;line-height:1.95;color:#4b635c}.story-definition{padding:20px 23px;background:#edf4e9;border-left:3px solid #4c8766;font-size:17px!important;color:#294c3d!important}.story-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:35px}.story-milestones{list-style:none;padding:0;margin:20px 0}.story-milestones li{padding:15px 0 15px 23px;border-left:1px solid #b6c9b6;position:relative;font-size:14px;line-height:1.8;color:#405d50}.story-milestones li:before{content:'';width:7px;height:7px;background:#8c642e;border-radius:50%;position:absolute;left:-4px;top:24px}.terms{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.term-button{padding:7px 10px;border:1px solid #d6ddce;border-radius:3px;color:#49755e;background:#f5f8ef;font-size:11px}.related-stories{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.related-stories button{padding:10px 12px;border:1px solid var(--line);color:#805b28;border-radius:3px;text-align:left;font-size:12px}.story-source-list{padding:0;list-style:none;font-size:12px;line-height:1.9}.story-source-list a{font-size:12px;color:#417464}.reading-prep{padding:22px;background:#eef5e9;border-radius:5px;font-size:14px;line-height:1.9;color:#385942}.reading-prep strong{color:#274b3b}.story-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.welcome-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:25px 0}.welcome-flow div{padding:15px;background:#f2f5ec;color:#52645b;border-radius:4px;font-size:12px;line-height:1.7}.welcome-flow strong{display:block;font-size:15px;color:#315143}.story-article-back{color:#68786b;font-size:12px;padding:0 0 22px}.story-nav-title{padding:10px 0;color:var(--muted);font-size:12px}.daily-summary{font-size:12px;color:#477368;line-height:1.7}.entry-card .outline{font-size:12px}.geo-note{font-size:10px;color:var(--muted)}
@media(max-width:1000px){nav{gap:18px}.workspace{grid-template-columns:minmax(0,1fr) 300px}#expedition-grid{grid-template-columns:repeat(2,1fr)}#story-grid{grid-template-columns:repeat(2,1fr)}.epoch-intro{display:block}.epoch-intro button{margin-top:16px}}
@media(max-width:760px){nav{gap:21px;font-size:11px}main{padding-top:24px}.intro{margin-bottom:22px}.entry-cards{grid-template-columns:1fr;gap:12px;margin-bottom:18px}.entry-card{padding:23px}.entry-card h2{font-size:24px}.epoch-intro{padding:20px}.epoch-intro h2{font-size:23px}.epoch-intro p{font-size:12px}.border-toggle{padding:10px 13px;font-size:10px}.workspace{display:block}.timeline{padding:17px 14px}.time-header strong{font-size:20px}#time-ticks button{font-size:9px;padding:6px 8px}.compare-table th,.compare-table td{padding:13px;font-size:12px}.compare-table{min-width:560px}.sidebar{max-height:none}#story-grid{grid-template-columns:1fr}#story-article{padding:23px}#story-article h1{font-size:35px}#story-article p{font-size:14px}.story-layout{display:block}.story-definition{padding:16px!important;font-size:15px!important}.welcome-flow{grid-template-columns:1fr}#expedition-grid{grid-template-columns:1fr}.map-wrap{height:290px}.entry-cards .eyebrow{font-size:9px}}

@media(max-width:760px){nav{gap:0;justify-content:space-between}nav button{font-size:11px}.story-layout aside{padding-top:5px}#journal-stats{gap:12px;flex-wrap:wrap}#journal-stats>div{min-width:65px}#journal-stats strong{font-size:27px}}
/* Epoch catalog and persistent learning rewards */
.wallet{border:1px solid #cdd9c7;border-radius:6px;background:#edf3e7;padding:8px 13px;text-align:left;white-space:nowrap}.wallet span{display:block;color:#865a25;font-weight:600;font-size:14px}.wallet small{display:block;font-size:9px;color:#55725d;margin-top:3px}header{gap:18px}.help-button{flex-shrink:0}nav{margin-left:auto;margin-right:20px}.catalog-overview{font-size:13px;color:#536e5d;line-height:1.9;padding:20px 0;margin:0}.russia-feature{display:flex;justify-content:space-between;gap:25px;align-items:center;border:1px solid #b6c9af;background:#e8f0e4;padding:27px;border-radius:7px;margin:5px 0 23px}.russia-feature h2{font-size:29px}.russia-feature p:not(.eyebrow){max-width:750px;font-size:13px;line-height:1.8;color:#4a6655}.russia-feature small{color:#7a572c;font-size:12px}.russia-feature button{flex-shrink:0;font-size:12px}.catalog-controls{display:flex;gap:25px;align-items:end;flex-wrap:wrap;margin:0 0 22px}.catalog-controls label{display:flex;flex-direction:column;gap:8px;font-size:11px;color:#54715f}.catalog-controls select,.catalog-controls input{border:1px solid #c8d7c5;background:white;border-radius:4px;padding:12px;color:#294638;min-width:250px;font-size:12px}#expedition-grid{display:block;margin:25px 0}.era-group{border:1px solid #d4ddcd;border-radius:6px;background:#fff;margin:0 0 18px;overflow:hidden}.era-group>summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px 26px;background:#f0f4ea}.era-group>summary::after{content:'＋';color:#55785f;font-size:20px}.era-group[open]>summary::after{content:'−'}.era-group summary small{display:block;font-size:10px;color:#8c622a;margin-bottom:8px}.era-group summary strong{font-family:var(--serif);font-weight:400;font-size:25px;display:block}.era-count{margin-left:auto;font-size:11px;color:#627961;line-height:1.8}.era-description{padding:0 25px;font-size:12px;color:#637664;line-height:1.8}.era-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding:10px 23px 23px}.compact-expedition{background:#fff;border-color:#d9e1d1}.compact-expedition .exp-content h2{font-size:25px}.compact-expedition .exp-content>small{text-transform:none;letter-spacing:0;line-height:1.7}.compact-expedition .exp-content p{min-height:115px;font-size:12px}.compact-expedition .exp-content{padding:21px}.quest-meta{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:10px;color:#6b7c68;line-height:1.6}.quest-meta span:last-child{color:#875d29}.progress-panel{background:white;border:1px solid #d1ddc9;padding:27px;border-radius:7px;margin-top:25px}.progress-heading{display:flex;gap:20px;align-items:center;justify-content:space-between}.progress-heading h2{font-size:27px}.progress-heading>strong{font-family:var(--serif);font-size:35px;color:#8b602b;font-weight:400}.progress-heading>strong small{font-family:Arial,sans-serif;font-size:12px}.xp-line{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:#63765e;line-height:1.7;margin:14px 0 8px}.progress-panel progress{width:100%;height:10px;accent-color:#5c8b5c}.learning-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:26px 0;font-size:11px;color:#637661}.learning-metrics strong{display:block;font-size:23px;color:#355b3e;margin-bottom:8px;font-weight:400}.badges{display:flex;gap:9px;flex-wrap:wrap}.badge{background:#f1f2ec;border:1px solid #dde1d4;border-radius:4px;font-size:10px;padding:9px;color:#798373}.badge.earned{background:#e7f0db;border-color:#b8cba4;color:#4f7335}.reward-rules{margin-top:22px;color:#5e745c;font-size:12px;line-height:1.9}.reward-rules summary,.reward-history summary{cursor:pointer;color:#7c5a2c}.reward-history{background:#fff;border:1px solid var(--line);border-radius:5px;padding:18px 22px;margin:20px 0;font-size:12px;color:#5e725b}.reward-history div{display:flex;justify-content:space-between;gap:25px;padding:13px 0;border-bottom:1px solid #e2e7db;font-size:11px;line-height:1.7}.reward-history strong{color:#8b602b;font-weight:400;white-space:nowrap}.completion-reward{padding:21px;background:#e9f1de;border:1px solid #bfd3a8;border-radius:5px;margin:20px 0;color:#47703a}.completion-reward strong{display:block;font-family:var(--serif);font-weight:400;font-size:27px;color:#825925;margin-bottom:7px}.completion-reward span{font-size:13px;line-height:1.7}.question-reading{background:#eef3e7;border:1px solid #d3e0c8;border-radius:4px;padding:14px;margin:16px 0;font-size:12px;color:#4a674c;line-height:1.85}.question-reading summary{cursor:pointer;color:#6c5a2d}.question-reading a{font-size:10px}.primary:disabled{background:#b7bfae;cursor:default;color:#fff}
@media(max-width:1100px){.era-grid{grid-template-columns:repeat(2,minmax(0,1fr))}header{gap:12px}nav{gap:17px;margin-right:5px}.brand{font-size:16px}.wallet{padding:7px 9px}}
@media(max-width:760px){header{gap:9px}.brand{font-size:14px;letter-spacing:1.6px}.brand-icon{font-size:31px}.brand small{font-size:6px;letter-spacing:2px}.wallet{margin-left:auto;padding:7px 10px}.help-button{margin-left:0}.wallet span{font-size:12px}.wallet small{font-size:8px}nav{margin:5px 0 0;gap:0;justify-content:space-between}.russia-feature{display:block;padding:22px}.russia-feature h2{font-size:25px}.russia-feature button{margin-top:17px;width:100%}.catalog-controls{display:block}.catalog-controls label{margin:14px 0}.catalog-controls select,.catalog-controls input{width:100%;min-width:0}.era-grid{grid-template-columns:1fr;padding:8px 15px 15px}.era-group>summary{padding:19px 16px;gap:12px;align-items:flex-start;flex-wrap:wrap}.era-group summary strong{font-size:23px}.era-count{font-size:10px;margin-left:0;max-width:80%}.era-group>summary::after{margin-left:auto}.era-description{padding:0 17px}.compact-expedition .exp-content p{min-height:0}.progress-panel{padding:21px}.progress-heading{display:block}.progress-heading>strong{display:block;margin:20px 0 10px}.learning-metrics{grid-template-columns:repeat(2,1fr)}.xp-line{font-size:10px}.reward-history div{display:block}.reward-history strong{display:block;margin-top:5px}}
.marker .label-collided{visibility:hidden}.marker:hover .label-collided,.marker:focus .label-collided{visibility:visible}.marker:focus-visible{outline:none}.marker:focus-visible .halo{stroke:#724e1f;stroke-width:2}
/* Topic games and continent trainers */
header{flex-wrap:wrap;gap:12px}header nav{order:4;flex:1 0 100%;margin:0;overflow-x:auto;white-space:nowrap;display:flex;justify-content:center;scrollbar-width:thin;padding:2px 0 5px}header .wallet{margin-left:auto}nav button{flex-shrink:0}
.play-summary{display:flex;align-items:baseline;gap:16px;margin:28px 0;color:var(--muted,#64766c)}.play-summary strong{font-size:30px;color:var(--ink,#233e34)}.play-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:24px 0}.play-card{border:1px solid #d9ddd2;background:#fffdf7;border-radius:16px;padding:26px;display:flex;flex-direction:column;align-items:flex-start}.play-card h2{font-size:25px;margin:10px 0}.play-card p{color:#56665b;line-height:1.6}.play-card>.primary,.play-card>.outline{margin-top:auto}.play-actions{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.route-number{font-size:46px;color:#b98e43;font-family:Georgia,serif}.source-notes{margin:30px 0;color:#53655c;line-height:1.7;max-width:950px}.source-notes summary{cursor:pointer;font-weight:600}.source-notes a,.photo-credit a{color:#346350}.source-notes p{font-size:13px}
#play-dialog{width:min(1050px,94vw);max-height:90dvh}#play-body{padding:12px 8px 24px}#play-body h2{font-size:32px;margin:18px 0}#play-body p{line-height:1.65}.photo-question{display:block;width:100%;height:min(42vh,390px);object-fit:contain;background:#ebece4;border-radius:12px;margin:20px auto}.flag-question{display:block;width:240px;max-width:80%;height:180px;object-fit:contain;margin:28px auto;filter:drop-shadow(0 3px 6px #0002)}.play-options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}.play-options button{min-height:60px;white-space:normal;text-align:left;font-size:17px;line-height:1.4}.play-options button:disabled{opacity:1;cursor:default}.answer-correct{background:#deeddd!important;border-color:#4f7654!important;color:#224a2a!important}.answer-wrong{background:#f9e6df!important;border-color:#ad6750!important;color:#713f2c!important}.play-feedback{padding:20px;border-radius:12px;margin:20px 0;border-left:4px solid #617e58;background:#eef3e8}.play-feedback.incorrect{border-color:#ad6750;background:#faf0e9}.photo-credit{font-size:12px;color:#627266;overflow-wrap:anywhere}.study-answer{padding:20px;background:#eef3e8;border-radius:12px;margin:20px 0}.study-answer h3{font-size:28px}button:disabled{opacity:.5;cursor:default}
.cross-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(220px,1fr);gap:26px}.cross-scroll{overflow-x:auto;padding:4px 1px}#cross-board{display:grid;grid-template-columns:repeat(var(--columns),minmax(27px,1fr));max-width:560px;gap:2px}.cross-cell{position:relative;display:block;aspect-ratio:1;background:#fff;border:1px solid #8d9c90;min-width:27px}.cross-cell small{position:absolute;left:2px;top:0;font-size:10px;z-index:1;pointer-events:none;line-height:1}.cross-cell input{border:0;border-radius:0;width:100%;height:100%;padding:7px 0 0;background:transparent;text-align:center;text-transform:uppercase;font-size:clamp(14px,2vw,23px);font-weight:600;color:#203d30;min-width:0;box-sizing:border-box}.cross-cell input:focus{outline:3px solid #b58b3e;outline-offset:-3px}.cross-block{background:#e0e5da;aspect-ratio:1;border-radius:2px}.cell-selected{background:#edf0ce!important}.cell-wrong{background:#fad9ce!important}.cell-correct{color:#285b32!important;background:#e3efdf!important}.cross-clue{display:block;width:100%;text-align:left;border:0;background:transparent;padding:10px 12px;line-height:1.5;color:#344a3b;border-radius:8px;font-size:14px}.cross-clue:hover,.clue-active{background:#ecebd7}.cross-clues h3{margin:16px 0 6px}.cross-clues small{color:#69766a}#cross-feedback{padding:12px 0;line-height:1.6}
@media(max-width:950px){.play-grid{grid-template-columns:repeat(2,minmax(0,1fr))}header nav{justify-content:flex-start}.cross-layout{grid-template-columns:1fr}.cross-clues{columns:2;column-gap:20px}.cross-clues h3,.cross-clue{break-inside:avoid}}@media(max-width:560px){.play-grid{grid-template-columns:1fr}.play-card{padding:22px}.play-summary{align-items:flex-start;flex-direction:column;gap:4px}.play-options{grid-template-columns:1fr}.play-options button{min-height:50px}#play-dialog{padding:16px;width:96vw}#play-body h2{font-size:26px}.cross-clues{columns:1}header nav button{font-size:13px;padding:10px 12px}#cross-board{min-width:calc(var(--columns)*29px)}.photo-question{height:32vh}.play-actions>button{flex:1 1 auto}}

header{height:auto;min-height:110px;padding-top:16px}header nav{height:44px;gap:20px}header nav button{height:100%}@media(max-width:560px){header{padding-top:12px}header nav{gap:4px}}

/* Shared profile */
.profile-panel{margin:24px 0;padding:24px;border:1px solid var(--line,#d7d5cc);border-radius:14px;background:#eef1e9}.profile-heading{display:flex;justify-content:space-between;align-items:center;gap:16px}.profile-heading h2{margin:0;font-size:26px}.profile-state{font-size:13px;color:#42654b}.profile-button{white-space:nowrap;max-width:160px;overflow:hidden;text-overflow:ellipsis;padding:9px 12px;font-size:12px}.login-code{display:block;font-size:38px;letter-spacing:8px;color:#42654b;margin:20px 0}.profile-panel p{max-width:720px}#profile-dialog{max-width:520px}#profile-login-body .primary{display:inline-block;text-decoration:none}#close-profile{float:right}@media(max-width:650px){.profile-panel{padding:18px}.profile-heading{align-items:flex-start;flex-direction:column;gap:8px}.profile-button{max-width:110px;font-size:11px;padding:8px}.profile-panel .play-actions{align-items:stretch;flex-direction:column}}