/* History is a two-bank scroll: jade for China, bronze for the wider world. */
#page-history{--river-bronze:#806025;--river-jade:#24666c;--river-soft:#e4eeea;max-width:1280px;padding-top:20px;color:var(--ink)}
.history-intro{display:grid;grid-template-columns:1.3fr 1fr;align-items:center;min-height:280px;gap:40px;padding:12px 24px 32px;border-bottom:1px solid var(--line)}
.history-overline{font-size:14px;color:var(--jade);margin-bottom:16px}.history-intro h1{font:600 clamp(30px,3.7vw,46px)/1.35 var(--sans);letter-spacing:1px;margin:0 0 20px}.history-intro p:not(.history-overline){font-size:16px;line-height:1.9;color:var(--muted);margin-bottom:16px}.history-start{display:inline-flex;align-items:center;gap:28px;min-height:44px;text-decoration:none;border-bottom:1px solid var(--jade);font-size:14px}.history-seal-scene{position:relative;align-self:stretch;min-height:238px;max-width:400px;width:100%;justify-self:center}.history-seal-scene svg{position:absolute;bottom:0;left:0;width:100%}.history-seal-scene>span{position:absolute;z-index:1;top:18px;right:30px;border:3px double #a44536;padding:7px 9px;color:#963e30;font-size:18px;line-height:1.4;transform:rotate(5deg)}
.history-eras{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:8px;margin:28px 0 20px}.history-eras :is(button,a){display:flex;flex-direction:column;align-items:flex-start;gap:6px;min-height:100px;padding:14px 12px;background:#fff;border:1px solid var(--line);color:var(--muted);border-radius:10px;cursor:pointer}.history-eras small{font-size:12px;color:var(--muted)}.history-eras strong{font-size:15px;color:var(--ink);white-space:normal;overflow-wrap:anywhere;max-width:100%;font-weight:600}.history-eras span{font-size:12px}.history-eras :is(button,a):hover{background:#e7efea;border-color:#91b4ac}.history-eras :is(button,a).active{background:var(--ink);color:#fff;border-color:var(--ink)}.history-eras :is(button,a).active :is(small,strong){color:#fff}
.history-controls{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:28px}.history-controls form{display:flex;flex:1;min-width:260px;gap:8px}.history-controls input{margin:0;flex:1;min-width:0;background:white;border:1px solid #9db4ae;border-radius:8px;padding:12px;font-size:14px;height:46px}.history-controls button{margin:0;min-height:46px;white-space:nowrap}.history-controls>label{display:flex;align-items:center;gap:10px;font-size:13px;white-space:nowrap}.history-controls select,.history-locate select{background-color:white;border:1px solid #9db4ae;min-height:44px;color:var(--ink);font-size:14px;max-width:100%}
.history-river-section{scroll-margin-top:24px}.history-chapter-head{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 28px 12px;background:#fff;border-radius:14px 14px 0 0;border:1px solid var(--line);border-bottom:0}.history-chapter-head h2{font-size:25px;margin:0 0 6px}.history-chapter-head p{font-size:14px;color:var(--muted);margin:0}.river-legend{display:flex;gap:18px;white-space:nowrap;font-size:13px}.river-legend span{display:flex;gap:7px;align-items:center}.river-legend i{width:10px;height:10px;background:var(--river-jade);border-radius:50%;display:block}.river-legend i.world{background:var(--river-bronze);border-radius:2px}#history-map{border:1px solid var(--line);border-top:0;background:white;overflow:hidden;border-radius:0 0 14px 14px}.river-map{display:block;width:100%;height:auto;min-height:180px}.river-map text{font-family:var(--sans);font-size:14px;fill:var(--muted)}.river-scale-note{font-size:12px;line-height:1.8;margin:12px 0 26px;color:var(--muted)}.history-locate{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.history-locate>p{font-size:14px;color:var(--muted);margin:0}.history-locate label{display:flex;align-items:center;gap:12px;font-size:13px}.history-locate select{width:300px}.river-banks{display:grid;grid-template-columns:1fr 1fr;gap:156px;text-align:center;font-size:15px;font-weight:600;color:var(--jade);margin-bottom:24px}.river-banks span:last-child{color:var(--river-bronze)}
.river-stream{position:relative;padding:8px 0 32px}.river-stream:before{content:"";position:absolute;top:0;bottom:0;left:calc(50% - 28px);width:56px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='360' viewBox='0 0 56 360'%3E%3Cpath d='M28 0C3 60 53 120 28 180S3 300 28 360' fill='none' stroke='%23d3e3dc' stroke-width='34'/%3E%3Cpath d='M28 0C3 60 53 120 28 180S3 300 28 360' fill='none' stroke='%2381ada5' stroke-width='1.5' stroke-dasharray='3 7'/%3E%3C/svg%3E");background-repeat:repeat-y;background-position:top center}.river-node{display:grid;grid-template-columns:minmax(0,1fr) 140px minmax(0,1fr);align-items:start;position:relative;margin-bottom:28px;gap:0;scroll-margin-top:32px}.river-year{grid-column:2;grid-row:1;z-index:1;align-self:start;text-align:center;padding:26px 0;color:var(--ink);font-size:14px}.river-year span{display:inline-block;background:#f1f5f2;border:1px solid #bed2c9;padding:6px 10px;border-radius:20px;font-weight:600;max-width:135px}.river-year small{display:block;color:var(--muted);font-size:11px;background:var(--paper);width:fit-content;margin:6px auto 0;padding:2px 5px}.river-card{grid-row:1;background:white;border:1px solid var(--line);border-top:3px solid var(--jade);padding:22px 24px;border-radius:4px 14px 14px 14px;min-width:0;box-shadow:0 4px 18px #24444104;position:relative}.river-card:after{content:"";position:absolute;right:-35px;top:45px;width:34px;height:1px;background:#9bbbb3}.river-card-meta{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-size:12px;color:var(--muted);margin-bottom:12px}.river-region{color:var(--jade);font-weight:600}.river-card h3{font-size:21px;margin:0 0 8px;line-height:1.55}.river-card h3 a{text-decoration:none;color:var(--ink)}.river-card h3 a:hover{color:var(--jade);text-decoration:underline}.river-card>p{font-size:14px;line-height:1.9;color:var(--muted)}.river-card .river-date{display:flex;flex-wrap:wrap;gap:6px 10px;font-size:12px;color:var(--muted);margin-bottom:14px}.river-date>span{color:#675c43;border:1px solid #ded8c7;padding:0 6px;border-radius:4px;font-size:11px;background:#faf8f1}.river-card details{border-top:1px solid var(--line);margin-top:18px;padding-top:4px}.river-card summary{font-size:13px;color:var(--jade);cursor:pointer;min-height:44px;line-height:44px;list-style-position:inside}.river-card dl{font-size:13px;margin:10px 0 16px}.river-card dl>div{display:grid;grid-template-columns:86px 1fr;gap:10px;margin-bottom:12px}.river-card dt{color:var(--muted)}.river-card dd{margin:0;overflow-wrap:anywhere}.river-related{display:flex;flex-wrap:wrap;gap:8px}.river-related a{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;font-size:13px;color:var(--jade);background:#edf4f0;border-radius:7px;text-decoration:none}.river-related a:hover{background:#dcebe2}.river-permalink{display:inline-block;min-height:44px;padding:12px 0 0;font-size:12px;color:var(--muted)}.river-echo{grid-row:1;padding:24px 16px;max-width:330px;align-self:start;color:var(--muted)}.river-echo>span{font-size:12px;color:var(--river-bronze);display:inline-block;margin-bottom:8px}.river-echo>p{font-size:12px;margin:0 0 5px}.river-echo a{display:inline-block;line-height:1.8;padding:6px 0;font-size:14px;color:var(--ink);text-decoration:none;min-height:44px}.river-echo a:hover{text-decoration:underline}.river-echo small{display:block;font-size:12px;margin-top:2px}.river-node.china .river-card{grid-column:1}.river-node.china .river-echo{grid-column:3}.river-node.world .river-card{grid-column:3;border-top-color:var(--river-bronze);border-radius:14px 4px 14px 14px}.river-node.world .river-card:after{right:auto;left:-35px;background:#c5b493}.river-node.world .river-region{color:var(--river-bronze)}.river-node.world .river-echo{grid-column:1;justify-self:end;text-align:right}.river-node.world .river-echo>span{color:var(--jade)}.history-pagination{display:flex;justify-content:space-between;gap:16px;padding:20px 0 30px}.history-pagination>*{min-height:44px}.history-method{border-top:1px solid var(--line);padding:28px 0 12px}.history-method h2{font-size:21px;margin:0 0 14px}.history-method>p{font-size:14px;line-height:1.9;color:var(--muted);max-width:78ch}.history-method .river-related{margin-top:20px}.history-empty,.history-loading{background:white;border:1px solid var(--line);padding:36px;text-align:center;border-radius:12px}.history-empty h3{font-size:20px}
/* Curated friends and local site administration. */
.friend-sites{background:white;border:1px solid var(--line);border-radius:12px;padding:22px 20px}.friend-sites>header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.friend-sites h3{margin:0}.friend-sites>header>span{color:var(--gold);font-size:12px}.friend-site{display:flex;gap:12px;align-items:center;padding:14px 0;border-top:1px solid var(--line);text-decoration:none;min-height:70px}.friend-site:hover strong{text-decoration:underline;color:var(--jade)}.friend-monogram{display:grid;place-items:center;flex-shrink:0;width:34px;height:36px;border:1px solid #c9dcd1;background:#eff5ed;color:var(--jade);border-radius:5px;font-size:16px}.friend-site>span:nth-child(2){min-width:0;flex:1}.friend-site strong{display:block;font-size:14px;overflow-wrap:anywhere}.friend-site small{display:block;font-size:12px;color:var(--muted);line-height:1.7;margin-top:3px;overflow-wrap:anywhere}.friend-site>span:nth-child(3){font-size:18px;color:var(--muted)}.friends-empty{font-size:13px;color:var(--muted);line-height:1.9;padding:6px 0 0;margin:0}.admin-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:20px}.admin-heading h1{font-size:36px;margin:0 0 10px}.admin-heading p{color:var(--muted);font-size:15px}.admin-heading>a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;white-space:nowrap}.admin-local-note{padding:16px 20px;background:#e4eeea;border-radius:8px;color:var(--muted);font-size:14px}.admin-status{min-height:28px;color:var(--jade);font-size:14px;margin:14px 0}.admin-status.is-error{color:#a33325}.friends-admin-layout{display:grid;grid-template-columns:340px minmax(0,1fr);gap:28px;align-items:start}.friend-editor{padding:24px;background:white;border:1px solid var(--line);border-radius:12px}.friend-editor h2,.friend-list-heading h2{font-size:20px;margin:0 0 20px}.friend-editor label:not(.friend-checkbox){display:block;margin:16px 0 8px;font-size:14px;color:var(--ink)}.friend-editor label>span{display:block;color:var(--muted);font-size:12px;margin-top:3px}.friend-editor :is(input:not([type=checkbox]),textarea){display:block;width:100%;box-sizing:border-box;margin:0;background:#fbfdfb;border:1px solid #96aea4;border-radius:6px;font-size:14px;padding:11px 12px;color:var(--ink);min-height:44px}.friend-editor textarea{resize:vertical}.friend-checkbox{display:flex;align-items:center;gap:10px;min-height:44px;margin:16px 0;font-size:14px}.friend-checkbox input{width:18px;height:18px;margin:0;accent-color:var(--jade)}.friend-form-actions{display:flex;gap:12px;flex-wrap:wrap}.friend-form-actions button{margin:0;min-height:44px}.friend-list-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 0 16px}.friend-list-heading h2{margin:0}.friend-list-heading>span{font-size:13px;color:var(--muted)}.friend-admin-row{padding:22px 24px;margin-bottom:14px;background:white;border:1px solid var(--line);border-radius:12px}.friend-admin-info h3{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 10px;font-size:18px;overflow-wrap:anywhere}.friend-state{font-size:11px;border:1px solid var(--line);border-radius:20px;padding:2px 8px;font-weight:400;color:var(--muted)}.friend-state.enabled{color:#23583e;background:#eaf4eb;border-color:#b4ceb7}.friend-admin-info p{font-size:13px;color:var(--muted);overflow-wrap:anywhere;margin-bottom:8px}.friend-admin-info small{font-size:12px;color:var(--muted)}.friend-admin-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}.friend-admin-actions button{padding:8px 14px;min-height:44px;border:1px solid #b3c6bd;background:#f7faf7;color:var(--ink);font-size:13px;margin:0;cursor:pointer}.friend-admin-actions button:hover{background:#e2ece5}.friend-admin-actions .friend-delete{color:#963e30;border-color:#d9b9b2}.friend-delete-dialog{border:1px solid var(--line);border-radius:16px;padding:28px;width:460px;max-width:calc(100% - 32px);color:var(--ink);font:15px/1.8 var(--sans);box-sizing:border-box}.friend-delete-dialog::backdrop{background:#173d4166}.friend-delete-dialog h2{margin:0 0 16px;font-size:24px}.friend-delete-dialog p{overflow-wrap:anywhere}.friend-delete-dialog .danger{background:#963e30;color:white}.friend-delete-dialog .friend-form-actions{margin-top:24px}.friend-delete-dialog [role=alert]{color:#963e30;font-size:13px;margin:12px 0 0}.admin-empty{padding:32px;background:white;border:1px solid var(--line);border-radius:12px}.admin-empty p{color:var(--muted);font-size:14px}.admin-empty h3{margin:0 0 12px;font-size:20px}
@media(max-width:1000px){.history-eras{grid-template-columns:repeat(4,minmax(0,1fr))}.history-eras :is(button,a){min-width:0;min-height:88px;padding:12px 14px}.history-eras strong{max-width:100%;overflow-wrap:anywhere}.history-intro{padding:8px 0 26px;gap:16px}.river-node{grid-template-columns:minmax(0,1fr) 104px minmax(0,1fr)}.river-year{font-size:12px}.river-year span{max-width:100px;padding:6px}.river-card{padding:18px}.river-card h3{font-size:18px}.river-card:after{width:20px;right:-21px}.river-node.world .river-card:after{left:-21px}.river-echo{padding:24px 8px}.friends-admin-layout{grid-template-columns:300px minmax(0,1fr);gap:20px}}
@media(max-width:680px){#page-history{padding-top:14px}.history-intro{position:relative;display:block;min-height:0;padding:14px 0 24px}.history-intro>div:first-child{position:relative;z-index:1}.history-intro h1{font-size:28px;letter-spacing:0;margin-bottom:14px}.history-intro p:not(.history-overline){font-size:14px;max-width:25em}.history-overline{font-size:12px;margin-bottom:12px}.history-seal-scene{display:none}.history-eras{gap:6px;margin:22px 0 18px}.history-eras :is(button,a){min-height:82px;padding:10px 7px;gap:5px}.history-eras strong{font-size:12px}.history-eras :is(small,span){font-size:10px}.history-controls{gap:12px;margin-bottom:24px}.history-controls form{min-width:0;flex-basis:100%}.history-controls input{font-size:13px;width:0;padding:10px}.history-controls form button{font-size:12px;padding:10px 12px}.history-controls>label{flex:1}.history-controls>label select{flex:1}.history-controls>.ghost-button{font-size:13px}.history-chapter-head{padding:20px 16px 8px;gap:12px}.history-chapter-head h2{font-size:21px}.history-chapter-head p{font-size:12px;max-width:20em}.river-legend{gap:8px;flex-direction:column;font-size:12px}.river-map{min-height:100px}.river-scale-note{font-size:12px;margin:10px 0 20px}.history-locate{display:block}.history-locate>p{font-size:13px;margin-bottom:12px}.history-locate label{width:100%;gap:8px}.history-locate select{width:0;flex:1;font-size:13px}.river-banks{display:none}.river-stream:before{left:0;width:20px;background-size:32px 206px}.river-node,.river-node.world{display:flex;flex-direction:column;margin-bottom:22px;padding-left:30px}.river-year{padding:0 0 10px;text-align:left;font-size:13px;display:flex;align-items:center;gap:8px}.river-year span{padding:5px 10px;max-width:none}.river-year small{display:inline-block;margin:0;font-size:12px}.river-card,.river-node.world .river-card{padding:18px 16px;width:100%;box-sizing:border-box;border-radius:4px 12px 12px 12px}.river-card:after,.river-node.world .river-card:after{left:-21px;right:auto;top:24px}.river-card h3{font-size:19px}.river-card-meta{font-size:12px}.river-card>p{font-size:14px}.river-card .river-date{font-size:12px}.river-card dl>div{display:block}.river-card dt{font-size:12px;margin-bottom:5px}.river-card dd{font-size:13px}.river-echo,.river-node.world .river-echo{text-align:left;max-width:none;padding:14px 8px 4px;width:100%;box-sizing:border-box}.river-echo>span{margin-bottom:4px}.river-echo>p{display:inline;margin-left:10px;font-size:11px}.river-echo a{display:block;font-size:13px;padding:8px 0;line-height:1.6;min-height:0}.river-echo small{font-size:11px}.history-pagination{flex-wrap:wrap;gap:10px}.history-pagination button{font-size:12px;padding:10px 12px}.history-method h2{font-size:20px}.history-method>p{font-size:13px}.river-related a{font-size:12px;padding:8px 10px}.history-empty{padding:24px 16px}.friend-sites{padding:20px}.admin-heading{align-items:flex-start;flex-direction:column;gap:12px}.admin-heading h1{font-size:28px}.admin-heading p{font-size:14px}.admin-local-note{font-size:13px;padding:14px 16px}.friends-admin-layout{grid-template-columns:1fr}.friend-editor{padding:20px}.friend-list-heading{flex-wrap:wrap;gap:8px}.friend-admin-row{padding:20px}.friend-admin-info h3{font-size:18px}.friend-admin-actions{justify-content:flex-start;flex-wrap:wrap}.friend-delete-dialog{padding:22px}.friend-delete-dialog h2{font-size:21px}}

.history-start{background:transparent;border:0;border-bottom:1px solid var(--jade);border-radius:0;color:var(--ink);padding:0;cursor:pointer}.history-start:hover{color:var(--jade)}.river-card summary:focus-visible{outline:3px solid #307d89;outline-offset:3px;border-radius:4px}
@media(max-width:680px){.river-map text{font-size:32px}.river-echo a{min-height:44px;display:flex;align-items:center}}

.history-eras a{text-decoration:none}