@charset "UTF-8";
.timeline{overflow-anchor:none}
:root{--paper:#f6f4ed;--ink:#20373a;--muted:#77817e;--line:#dcded4;--gold:#b18c4c;--label-width:156px;--deep:#1e353a;}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased}button,input,select{color:inherit}button,select{cursor:pointer}button{border:0;background:none}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:2px solid #b28c4a;outline-offset:4px}a{color:inherit}button{transition:background .15s,color .15s,box-shadow .15s}button:hover{color:#9a7136}button:disabled:hover{color:inherit}svg{flex-shrink:0}.site-header{height:84px;display:flex;align-items:center;justify-content:space-between;margin:0 42px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:14px;text-decoration:none}.brand-mark{width:56px;height:56px;display:block;flex-shrink:0}.brand-mark img{display:block;width:100%;height:100%;object-fit:contain}.brand-copy{min-width:0}.brand small{display:block;margin-top:6px;color:#7b827a}.header-actions{display:flex;align-items:center;gap:30px}.text-button span{margin-left:12px;color:var(--gold)}main{max-width:1900px;margin:auto;padding:0 42px}.eyebrow{color:#a48045;margin:0 0 12px}h1{margin:0}.atlas{border:1px solid #d4d9cf;border-radius:10px;overflow:visible;background:#fcfcf8;margin:24px 0;box-shadow:0 12px 35px -30px #152c36}.toolbar{display:flex;align-items:center;padding:15px 18px;gap:20px;background:#fffefa;border-radius:10px 10px 0 0}.search-wrap{position:relative;min-width:240px;max-width:430px;flex:1}.search-wrap input{height:39px;border:1px solid #dfe2da;border-radius:5px;padding:0 36px;width:100%;background:#f5f6f1;}.search-wrap kbd{position:absolute;right:12px;top:10px;color:#8b928c;border:1px solid #dfe2da;border-radius:3px;width:18px;text-align:center}.search-icon{position:absolute;left:14px;top:12px;width:11px;height:11px;border:1.5px solid #7d8781;border-radius:50%}.search-icon:after{content:"";position:absolute;width:5px;height:1.5px;transform:rotate(45deg);background:#7d8781;right:-4px;bottom:-2px}.year-form{display:flex;align-items:center;gap:8px}.year-form label,.zoom-controls>span{color:var(--muted)}.year-form input{width:66px;background:transparent;border:0;border-bottom:1px solid #d8ddd3;padding:5px 0;appearance:textfield}.year-form input::-webkit-inner-spin-button{display:none}.year-form button{padding:4px}.toolbar-separator{height:22px;width:1px;background:var(--line)}.zoom-controls{display:flex;align-items:center;gap:8px}.icon-button{height:28px;width:28px;border:1px solid #dfe3da;border-radius:4px;background:#fffefa;padding:0}.icon-button:hover{background:#e9ece4}.zoom-controls select{border:0;background:transparent;width:96px;padding:4px}.layer-wrap{position:relative;margin-left:auto}.layer-button{display:flex;align-items:center;gap:8px;border:1px solid #dfe3da;border-radius:4px;padding:9px 11px;}.layer-button span{background:#edf0e8;border-radius:3px;padding:1px 4px;color:#737e76;}.layer-menu{position:absolute;z-index:30;top:47px;right:0;background:#fffef9;min-width:210px;padding:12px;border:1px solid var(--line);box-shadow:0 10px 40px #19353a1c;border-radius:7px}.layer-menu label{display:flex;gap:12px;align-items:center;padding:9px;cursor:pointer}.layer-menu input{accent-color:var(--deep)}.era-nav{display:flex;align-items:center;gap:6px;border-top:1px solid #eceee7;border-bottom:1px solid #e1e5dc;padding:10px 18px;overflow:auto;white-space:nowrap}.nav-label{color:#879189;margin-right:14px}.era-nav button{padding:6px 11px;border-radius:4px;color:#6c7b73}.era-nav button:hover,.era-nav button.active{background:#e8ede3;color:#314c43}.overview-wrap{display:flex;gap:24px;padding:16px 20px 11px;align-items:flex-start;background:#f5f6f0;border-bottom:1px solid #e2e6dc}.overview-label{color:#7d897f;width:112px;padding-top:3px;flex-shrink:0}.overview-label span{display:block;margin-top:5px;color:#a1a99f}.overview{height:39px;position:relative;flex:1;cursor:crosshair;touch-action:none}.overview-period{height:13px;position:absolute;top:3px;border-right:2px solid #f5f6f0}.overview-period.early{background:#c8bd9f}.overview-period.divided{background:#b3bfb0}.overview-period.moscow{background:#a0b0a5}.overview-period.tsardom{background:#a58c73}.overview-period.empire{background:#78918b}.overview-window{position:absolute;top:0;height:20px;border:1.5px solid #526f63;background:#ffffff44;min-width:8px;border-radius:3px;pointer-events:none}.overview-window:before,.overview-window:after{content:"";width:3px;height:8px;position:absolute;background:#526f63;top:4px;border-radius:1px}.overview-window:before{left:2px}.overview-window:after{right:2px}.overview-ticks{position:absolute;top:23px;left:0;right:0;display:flex;justify-content:space-between;pointer-events:none;color:#959e92}.timeline-heading{min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 18px;border-bottom:1px solid #e1e5dc}.timeline-heading>div{display:flex;align-items:center;gap:10px}.timeline-heading>div:first-child{flex:1;min-width:0}.timeline-heading>div:last-child{flex-shrink:0}.timeline-heading strong{white-space:nowrap;flex-shrink:0}.live-dot{width:5px;height:5px;flex-shrink:0;border-radius:50%;background:var(--gold)}#currentEra{color:var(--ink);border-left:1px solid var(--line);margin-left:4px;padding-left:14px;min-width:0}.timeline{height:clamp(480px,65vh,880px);overflow:auto;position:relative;scrollbar-color:#afbaa8 #edf0e8;scrollbar-width:thin;border-bottom:0;border-radius:0 0 10px 10px;background:#fcfcf7;overscroll-behavior:contain;cursor:grab;isolation:isolate}.timeline.dragging{cursor:grabbing;user-select:none}.timeline-canvas{position:relative;min-height:100%;}.track{position:relative;border-bottom:1px solid #e0e5d9;min-height:82px;display:flex;align-items:stretch}.track:nth-child(odd){background:#f5f7f0}.track-label{position:sticky;left:0;z-index:5;width:var(--label-width);min-width:var(--label-width);align-self:stretch;display:flex;flex-direction:column;justify-content:flex-start;padding:19px 15px;background:#f1f3eb;border-right:1px solid #d6ddce;cursor:default;box-shadow:4px 0 7px -7px #526743}.track-label:before{content:"";position:absolute;height:12px;width:2px;background:var(--track-color,#7e8e78);left:0;top:22px}.track-label strong{display:flex;align-items:center;gap:8px}.track-label small{color:#8c9587;margin-top:8px;max-width:115px}.track-label .track-no{color:#abb2a4;display:block;margin-bottom:8px}.track-content{position:relative;flex-shrink:0;min-height:100%;background-image:linear-gradient(to right,#d8dece77 1px,transparent 1px);background-size:var(--grid-size) 100%;background-position:var(--grid-offset) 0}.year-track{height:43px;min-height:43px;position:sticky;top:0;z-index:12;background:#eef1e8!important}.year-track .track-label{padding:14px 16px;z-index:13;justify-content:center;background:#eef1e8}.year-track .track-label:before{display:none}.year-label{position:absolute;top:12px;transform:translateX(-50%);color:#6e7d66;}.year-label:after{content:"";height:6px;width:1px;background:#b8c2ac;position:absolute;left:50%;top:25px}.year-label.endpoint{transform:translateX(0)}.entity-card{position:absolute;border:1px solid #dadccd;border-radius:5px;text-align:left;padding:12px;display:flex;align-items:center;gap:10px;background:#fffef7;color:#293d38;overflow:hidden;transition:box-shadow .15s,border-color .15s;cursor:pointer;z-index:2}.entity-card:hover,.entity-card:focus-visible{z-index:4;box-shadow:0 5px 15px #183a3419;color:inherit;border-color:#8b9c85}.entity-card .card-main{min-width:0;display:flex;flex-direction:column;gap:6px}.card-title{overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.card-dates{color:#7e897b;}.card-subtitle{color:#8a9386;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.card-open{position:absolute;right:8px;top:8px;opacity:.3}.portrait{flex:0 0 51px;width:51px;height:65px;position:relative;border-radius:3px;overflow:hidden;background:#e4e3d5;display:flex;align-items:center;justify-content:center}.portrait img{width:100%;height:100%;object-fit:cover;object-position:50% 18%;position:absolute;inset:0;z-index:1;filter:saturate(.65)}.portrait .monogram{color:#8b9582}.portrait.no-image:after{content:"";position:absolute;inset:5px;border:1px solid #adba9b50;border-radius:50%}.entity-card[data-type="states"]{background:#ecebde;border-color:#d7d7c2}.entity-card[data-type="dynasties"]{background:#f2ede0;border-color:#ded6bc}.entity-card[data-type="rulers"]{background:#284147;color:#f7f3e7;border-color:#284147}.entity-card[data-type="rulers"] .card-dates{color:#dec79e}.entity-card[data-type="rulers"] .card-subtitle{color:#acbbb4}.entity-card[data-type="rulers"] .portrait{height:78px;flex-basis:60px;width:60px;background:#455b58}.entity-card[data-type="rulers"] .monogram{color:#b8c0ac}.entity-card[data-type="rulers"]:hover{color:#fffaf0;border-color:#a98f5d}.entity-card[data-type="family"]{background:#f0ebed;border-color:#ded6da}.entity-card[data-type="family"] .portrait,.entity-card[data-type="statesmen"] .portrait,.entity-card[data-type="contemporaries"] .portrait{flex-basis:40px;width:40px;height:52px}.entity-card[data-type="statesmen"]{background:#eaf0e8;border-color:#d4dfcf}.entity-card[data-type="contemporaries"]{background:#edf0f4;border-color:#d4dce7}.entity-card[data-type="events"]{background:#f5eee0;border-color:#e1d6bb;padding-left:15px}.entity-card[data-type="events"]:before{content:"";width:4px;height:4px;border:1px solid #b5975f;position:absolute;top:15px;left:6px;transform:rotate(45deg)}.entity-card[data-type="wars"]{background:#f1e6e1;border-color:#dfc9bf}.entity-card[data-type="wars"] .card-dates{color:#9b6653}.entity-card .heraldic-image{width:42px;height:53px;object-fit:contain;flex-shrink:0}.entity-card .heraldic-tag{color:#92927e}.span-bar{position:absolute;height:3px;min-width:4px;border-radius:1px;opacity:.65;background:var(--track-color);pointer-events:none}.span-bar:before{content:"";position:absolute;left:0;top:-2px;width:6px;height:6px;border-radius:50%;background:var(--track-color)}.card-locator{position:absolute;width:1px;pointer-events:none;background:var(--track-color);opacity:.2}.empty-lane{color:#87947d;padding:24px}.search-results{position:absolute;z-index:40;top:45px;left:0;right:0;min-width:300px;max-height:420px;overflow:auto;background:#fffef9;border:1px solid var(--line);border-radius:7px;box-shadow:0 15px 35px #17352f2b;padding:7px}.search-results button{width:100%;display:flex;gap:12px;text-align:left;padding:11px 10px;border-radius:4px;align-items:center}.search-results button:hover,.search-results button:focus{background:#edf0e6}.search-results .search-year{color:#9c845a;min-width:62px}.search-results strong{display:block;}.search-results small{color:#8a9483;display:block;margin-top:5px}.search-results p{padding:8px;color:#7a8474;}.search-result-count{padding:8px 10px;color:#9ba390}.hover-preview{position:fixed;z-index:60;max-width:300px;background:#fffef8;border:1px solid #d3d9ca;box-shadow:0 10px 35px #1f393c21;border-radius:7px;padding:16px;pointer-events:none}.hover-preview p{margin:8px 0;color:#6d7968}.hover-preview small{color:#a28b63}dialog{border:0;background:#fbfaf4;color:var(--ink);padding:0;box-shadow:0 30px 100px #152b4055}dialog::backdrop{background:#12292ee0;backdrop-filter:blur(4px)}.detail-dialog{max-width:930px;width:calc(100% - 44px);max-height:90vh;border-radius:10px;overflow:auto}.dialog-close{position:absolute;right:16px;top:14px;width:32px;height:32px;border-radius:50%;background:#f7f6f0e8;border:1px solid #dadfd3;z-index:4;color:#455746}.dialog-close:hover{background:#e7eadd}.detail-layout{display:grid;grid-template-columns:260px 1fr}.detail-visual{background:#263e40;min-height:380px;padding:34px 24px;color:#ede6d2}.detail-portrait{width:100%;height:280px;object-fit:cover;object-position:50% 15%;filter:saturate(.7);border:1px solid #d0c5a63b}.detail-portrait.heraldry{object-fit:contain;background:#e7e4d3;padding:18px;filter:none}.detail-monogram{height:250px;display:flex;align-items:center;justify-content:center;border:1px solid #b9bda03b;color:#b8b391;background:linear-gradient(135deg,#ffffff04,transparent)}.image-note{color:#b5c0b2;margin-top:14px}.image-credit{color:#96a99b;}.image-credit a{display:block;margin-top:5px}.detail-body{padding:38px 36px 30px}.detail-type{color:#9d7a40;text-transform:uppercase;margin-bottom:13px}.detail-body h2{margin:0 20px 10px 0;}.detail-subtitle{color:#85917f;margin:0 0 22px}.detail-dates{display:flex;gap:22px;border-top:1px solid #dde1d4;border-bottom:1px solid #dde1d4;padding:16px 0;margin:20px 0}.detail-dates div{flex:1}.detail-dates dt{color:#8c9785;text-transform:uppercase;margin-bottom:8px}.detail-dates dd{margin:0}.detail-description{color:#485b4b}.fact-list{margin:22px 0}.fact-list>div{border-bottom:1px solid #e7e9df;padding:10px 0;display:grid;grid-template-columns:110px 1fr;gap:15px}.fact-list dt{color:#8b9583;}.fact-list dd{margin:0;}.detail-body h3{text-transform:uppercase;color:#89947c;margin:25px 0 12px}.source-list{padding:0;list-style:none;margin:0}.source-list li{margin-bottom:7px}.source-list a{color:#748369;text-decoration:underline;text-underline-offset:3px}.related-items{display:flex;flex-wrap:wrap;gap:6px}.related-items button{border:1px solid #d9dfcf;border-radius:4px;padding:6px 9px;background:#f0f3e9}.modal-actions{margin-top:25px;display:flex;gap:15px}.primary-button{background:var(--deep);color:#fbf9ed;border-radius:5px;padding:11px 16px;}.primary-button:hover{color:#e2c58e;background:#2c4b4c}.primary-button span{margin-left:20px}.symbol-gallery{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}.symbol-figure{margin:0;width:95px}.symbol-figure img{height:66px;width:95px;object-fit:contain;padding:5px;background:#efeee3;border-radius:3px}.symbol-figure figcaption{color:#8c967f;margin-top:6px}.about-dialog{max-width:810px;width:calc(100% - 36px);max-height:90vh;border-radius:10px;padding:40px}.about-dialog h2{margin:0 0 18px}.about-dialog>p{color:#70806c}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 28px}.about-grid h3{margin:20px 0 8px}.about-grid p{color:#71806b;}.method-note{margin-top:20px;padding:18px 20px;background:#edeee3;border-left:2px solid #aa8d52}.method-note p{color:#74816a;margin-bottom:0}.about-dialog .primary-button{margin-top:12px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;top:-50px;left:10px;background:var(--deep);color:white;z-index:100;padding:10px}.skip-link:focus{top:10px}[hidden]{display:none!important}.entity-card.flash{box-shadow:0 0 0 3px #b69961!important}.no-data-banner{padding:40px;}.year-cursor{position:absolute;top:0;bottom:0;width:1px;z-index:1;background:#9c865538;pointer-events:none}
.card-inner{display:flex;align-items:center;gap:10px;min-width:0}.period-card{overflow:visible;padding:10px 12px;display:block}.period-card .card-inner{position:sticky;left:calc(var(--label-width) + 14px);width:max-content;max-width:min(520px,100%);height:100%;padding-right:12px}.period-card .card-main{max-width:430px;gap:4px}.period-card .card-title{-webkit-line-clamp:1}.period-card .card-subtitle{-webkit-line-clamp:1}.period-card .card-open{right:8px}.period-card:has(.heraldic-tag) .card-subtitle{display:none}.detail-visual .detail-monogram{grid-row:1/4}.entity-card[data-type="rulers"] .card-dates{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
@media(min-width:1600px){.site-header{height:90px}.timeline{height:68vh}}
@media(max-width:1100px){main{padding:0 22px}.site-header{margin:0 22px}.toolbar{gap:12px}.toolbar-separator{display:none}.zoom-controls>span{display:none}.search-wrap{min-width:200px}.era-nav{gap:0}.era-nav button{padding:6px 9px}}
@media(max-width:760px){:root{--label-width:120px}.site-header{height:72px;margin:0 16px}.brand-mark{width:44px;height:44px}.brand{gap:8px}.header-actions{gap:8px}main{padding:0 12px}.eyebrow{margin-bottom:10px}.toolbar{padding:12px;display:grid;grid-template-columns:1fr auto;gap:10px 12px}.search-wrap{min-width:0;max-width:none;grid-column:1/3}.search-wrap kbd{display:none}.year-form{grid-column:1}.zoom-controls{grid-row:3;grid-column:1;gap:8px}.zoom-controls>span{display:block;}.layer-wrap{grid-column:2;grid-row:2/4;align-self:center}.layer-button{padding:9px}.era-nav{padding:8px 10px}.nav-label{display:none}.era-nav button{padding:7px 10px}.overview-wrap{padding:13px 12px 8px;gap:10px}.overview-label{width:84px;}.timeline-heading{padding:9px 12px;min-height:54px;gap:8px}#currentEra{padding-left:8px;margin-left:0}.timeline-heading>div{gap:7px}.timeline-heading .icon-button{width:24px;height:24px;}.timeline{height:64vh;min-height:440px}.track-label{padding:16px 10px}.track-label small{max-width:84px}.track-label:before{top:19px}.year-track .track-label{padding:12px 10px}.detail-dialog{width:calc(100% - 20px);max-height:94vh}.detail-layout{grid-template-columns:1fr}.detail-visual{min-height:0;display:grid;grid-template-columns:110px 1fr;padding:24px;gap:15px;align-items:start}.detail-portrait{height:150px;grid-row:1/4}.detail-monogram{height:125px;grid-row:1/4}.image-note{margin:5px 20px 0 0;}.image-credit{margin:0}.detail-body{padding:25px 23px}.fact-list>div{grid-template-columns:85px 1fr;gap:12px}.about-dialog{padding:30px 23px}.about-grid{grid-template-columns:1fr;gap:0}.hover-preview{display:none}.search-results{min-width:0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.card-flags{display:flex;gap:8px;margin-left:6px}.mini-flag{display:flex;flex-direction:column;gap:5px;align-items:center}.mini-flag img{width:30px;height:20px;object-fit:contain;border:1px solid #c6c6b6}.mini-flag small{white-space:nowrap;color:#999581}.detail-portrait:not(.heraldry){object-fit:contain;background:#21373a}

/* Compact early periods keep their place without covering the next period. */
.period-card.compact-period{padding:10px 7px}.period-card.compact-period .card-inner{padding:0;max-width:100%;left:calc(var(--label-width) + 7px)}.period-card.compact-period .card-main{gap:5px}.period-card.compact-period .card-title{-webkit-line-clamp:2}.period-card.compact-period .heraldic-image,.period-card.compact-period .card-subtitle,.period-card.compact-period .heraldic-tag,.period-card.compact-period .card-open{display:none}.period-marker{display:block;text-align:center;color:#728061}

.language-switch{display:flex;align-items:center;padding:3px;gap:2px;border:1px solid #d5dccf;border-radius:6px;background:#eef1e8;flex-shrink:0}.language-switch a{display:block;padding:7px 9px;text-decoration:none;color:#75806e;border-radius:3px}.language-switch a[aria-current="page"]{background:var(--deep);color:#fbf9ed}.language-switch a:hover{background:#e0e6d9;color:#314c43}.language-switch a[aria-current="page"]:hover{background:#2c4b4c;color:#fbf9ed}.layer-button .layer-name{padding:0;background:none;color:inherit;}.header-actions{gap:22px}.year-form label{white-space:nowrap}
@media(max-width:760px){.header-actions{gap:12px}.language-switch a{padding:7px 8px}.overview-label{width:90px}}
@media(max-width:520px){.site-header{gap:10px}.language-switch a{padding:8px 7px}}

/* The precise period is a distinct, interactive bar below each information card. */
.duration-hit{position:absolute;display:block;height:28px;padding:0;border:0;background:transparent;border-radius:3px;appearance:none;cursor:pointer;z-index:3;text-align:left;color:var(--duration-color)}
.duration-hit:hover{background:transparent;color:var(--duration-color);z-index:6}
/* A border keeps the stroke width consistent when browser zoom rounds pixels. */
.duration-bar{position:absolute;left:10px;top:12px;height:0;border-top:4px solid var(--duration-color);pointer-events:none;opacity:.62;transition:opacity .15s}
.duration-bar:before,.duration-bar:after{content:"";position:absolute;top:-7px;width:0;height:10px;border-left:2px solid var(--duration-color);transform:translateX(-50%)}
.duration-bar:before{left:0}.duration-bar:after{left:100%}
.duration-hit.is-point .duration-bar{width:8px!important;height:8px;top:10px;border:0;background:var(--duration-color);transform:translateX(-50%);border-radius:50%}
.duration-hit.is-point .duration-bar:before,.duration-hit.is-point .duration-bar:after{display:none}
.duration-hit.is-period-active .duration-bar{opacity:.85}
.duration-hit:focus-visible{outline:2px solid var(--duration-color);outline-offset:2px;z-index:6}
.duration-date{position:absolute;top:29px;display:block;white-space:nowrap;pointer-events:none;padding:0 3px;background:#fffef8;color:var(--duration-color);border-radius:2px;opacity:0;box-shadow:0 1px 3px #23392d16}
.duration-date.start,.duration-date.joined{left:10px}.duration-date.end{right:10px}
.duration-hit:hover .duration-date,.duration-hit:focus-visible .duration-date{opacity:1}
.entity-card.is-period-active{outline:2px solid var(--duration-color);outline-offset:2px;box-shadow:0 4px 12px #17352f22;z-index:4}
.entity-card[data-type="rulers"] .card-dates{-webkit-line-clamp:2}
.entity-card[data-type="rulers"] .card-subtitle{-webkit-line-clamp:1}
.period-card.marker-period{padding:0;overflow:hidden}.period-card.tiny-period{border-radius:2px}.tiny-period .period-marker{display:none}

/* A single selection connects the bar to its real coordinates on the sticky ruler. */
.year-highlights{position:absolute;inset:0;pointer-events:none;z-index:2;overflow:hidden}
.year-highlight{position:absolute;top:0;height:42px;border-bottom:6px solid var(--selection-color);border-left:1px solid var(--selection-color);border-right:1px solid var(--selection-color);box-sizing:border-box}
.year-highlight.is-point{border-right:0;border-left-width:3px;border-bottom:0}
.year-period-date{position:absolute;top:7px;padding:3px 5px;border-radius:3px;background:var(--selection-color);color:#fffef7;white-space:nowrap;box-shadow:0 1px 4px #223b3420}
.year-period-date.start{transform:translateX(0)}.year-period-date.end{transform:translateX(-100%)}
.period-guides{position:absolute;top:0;bottom:0;pointer-events:none;z-index:3;overflow:hidden}
.period-guide{position:absolute;top:0;width:0;border-left:1px dashed var(--selection-color);opacity:.65;pointer-events:none}
.clear-period{width:25px;height:25px;border:1px solid #ced7c3;border-radius:50%;flex-shrink:0;background:#fffef7}.clear-period:disabled{visibility:hidden}
@media(max-width:760px){}

/* Icon geometry is centred independently of the current font. */
.dialog-close,.clear-period{display:grid;place-items:center;padding:0}
.dialog-close svg{display:block;width:16px;height:16px}.clear-period svg{display:block;width:12px;height:12px}
@media(max-width:760px){.site-header{height:auto;min-height:72px;padding:16px 0;flex-wrap:wrap;gap:12px}.brand{flex:1 1 240px}.header-actions{margin-left:auto;gap:18px}.atlas{margin:16px 0}}

/* Keep scenes legible and show initials only if an image is unavailable. */
.portrait:not(.no-image) .monogram{visibility:hidden}
.portrait.is-illustration img{object-fit:contain;object-position:center}

/* Editorial images for broad periods, with the full manuscript in its detail card. */
.entity-card[data-id="kievan-rus"] .heraldic-image{width:68px;height:54px;object-fit:cover;object-position:50% 58%;border-radius:3px;filter:saturate(.8)}
.entity-card[data-id="rurik-dynasty"] .heraldic-image{width:54px;height:64px;object-fit:cover;object-position:50% 35%;border-radius:3px;border:1px solid #d8ccb3;filter:saturate(.8)}

/* Cards remain modal triggers, with a permanent page available as a real link. */
a.entity-card{text-decoration:none;color:inherit;font:inherit}
.modal-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.modal-actions a{text-underline-offset:.2em}