:root {
  --paper:#f8f6ed;
  --ivory:#fffdf7;
  --ink:#2d3634;
  --muted:#6e7974;
  --line:#d6ddd0;
  --sage:#527a68;
  --sage-pale:#e8f1e7;
  --coral:#b86661;
  --coral-pale:#f9e9e1;
  --blue:#719db0;
  --blue-pale:#e9f3f5;
  --gold:#b39355;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Noto Sans SC",system-ui,sans-serif;line-height:1.6}
button{font:inherit;cursor:pointer}
a{color:var(--sage)}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid #d28b63;outline-offset:3px}
.skip{position:absolute;left:-9999px;top:10px;z-index:1000;padding:8px 12px;background:white}
.skip:focus{left:12px}
.relation-app{display:grid;grid-template-columns:minmax(0,1fr) minmax(310px,355px);max-width:1680px;min-height:100vh;margin:auto;border-left:1px solid #dce3d6;border-right:1px solid #dce3d6}
.relation-workspace{min-width:0}
.relation-header{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:104px;padding:17px clamp(22px,3vw,44px);border-bottom:1px solid var(--line);background:#fcfbf4}
.back,.map-link{flex:0 0 auto;color:#5b7869;font-size:13px;font-weight:700;text-decoration:none}
.map-link{border:1px solid #bed2bf;border-radius:100px;padding:8px 12px}
.header-title{text-align:center}
.header-title p{margin:0 0 2px;color:#8a9b8c;font-size:11px;letter-spacing:.12em}
.header-title h1{margin:0;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(25px,2.5vw,38px);font-weight:600;line-height:1.25;white-space:nowrap}
.header-title h1 span{display:block;color:#708d77;font-family:system-ui,sans-serif;font-size:12px;font-weight:500;letter-spacing:.06em}
.intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.9fr);align-items:center;gap:20px;min-height:200px;margin:22px clamp(18px,3vw,36px);border:1px solid #cfdecd;border-radius:24px;padding:24px clamp(22px,3vw,38px);background:radial-gradient(circle at 95% 5%,#f8dfd2 0 9%,transparent 9.3%),radial-gradient(circle at 12% 95%,#d2e8d8 0 17%,transparent 17.3%),linear-gradient(125deg,#f8f8ec,#edf4e7)}
.eyebrow{margin:0 0 8px;color:var(--coral);font-size:11px;font-weight:800;letter-spacing:.16em}
.intro h2{margin:0;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(25px,3.1vw,43px);font-weight:600;line-height:1.2}
.intro h2 em{color:var(--sage);font-style:normal}
.intro>p{max-width:460px;margin:0;color:#52635a;font-size:13px;line-height:1.9}
.topic-tabs{display:flex;gap:9px;overflow:auto;margin:0 clamp(18px,3vw,36px);padding:0 0 16px;border-bottom:1px solid var(--line)}
.topic-tab{flex:1 0 auto;min-width:160px;border:1px solid #d2dccc;border-radius:13px;padding:12px 14px;background:#fffdf6;color:#63766a;text-align:left;font-size:14px;font-weight:700}
.topic-tab span{display:inline-block;margin-right:7px;color:#b98d79;font-size:11px}
.topic-tab.is-active{border-color:#638b72;background:var(--sage);color:white;box-shadow:0 6px 15px #577b621e}
.topic-tab.is-active span{color:#dcebdc}
.diagram-section{padding:24px clamp(18px,3vw,36px) 45px}
.section-line{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:17px}
.section-line h2{margin:0;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(26px,2.6vw,38px);line-height:1.2}
.section-line>p{max-width:315px;margin:0;color:var(--muted);font-size:12px}
.path-picker{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 13px}
.path-picker:empty{display:none}
.path-picker button{border:1px solid #cbdcc9;border-radius:100px;padding:7px 14px;background:#fffefa;color:var(--sage);font-size:12px;font-weight:700}
.path-picker button.is-active{border-color:var(--coral);background:var(--coral-pale);color:#964d4b}
.diagram{min-height:450px;border:1px solid #ccd8cb;border-radius:20px;padding:18px;background:radial-gradient(circle at 92% 12%,#e6f1e9 0 10%,transparent 10.4%),radial-gradient(circle at 7% 83%,#f8e9df 0 11%,transparent 11.4%),#fdfbf3;box-shadow:0 12px 30px #415d5012}
.core-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.path-card,.branch-card,.house-card{min-width:0;border:1px solid #d8dfd0;border-radius:17px;padding:19px;background:#fffefa;box-shadow:0 4px 15px #405b4a0c}
.path-card.is-dim{background:#f8f9f4}
.path-card h3,.branch-card h3,.house-card h3{margin:0;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:24px;line-height:1.2}
.path-card>p,.branch-card>p,.house-card>p{margin:5px 0 17px;color:var(--muted);font-size:11px}
.path-card .top-person{display:flex;justify-content:center}
.fork-line{position:relative;height:38px;margin:0 22%}
.fork-line:before{content:"";position:absolute;left:50%;top:0;height:21px;border-left:2px solid var(--blue)}
.fork-line:after{content:"";position:absolute;left:0;right:0;bottom:0;border-top:2px solid var(--blue)}
.fork-line.sibling:before{display:none}
.fork-line.sibling:after{border-color:var(--sage);border-top-style:dashed}
.fork-line span{position:absolute;left:50%;bottom:6px;z-index:1;transform:translateX(-50%);padding:0 6px;background:#fffefa;color:var(--muted);font-size:10px;white-space:nowrap}
.path-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.path-column{min-width:0;text-align:center}
.path-column:before{content:"";display:block;width:0;height:15px;margin:auto;border-left:2px solid var(--blue)}
.path-card.sister-card .path-column:before{border-color:var(--sage);border-left-style:dashed}
.path-column .person-node{margin:auto}
.vertical-relation{display:flex;flex-direction:column;align-items:center;justify-content:center;height:61px;color:#6985a0;font-size:10px}
.vertical-relation:before,.vertical-relation:after{content:"";display:block;height:14px;border-left:2px solid var(--blue)}
.vertical-relation span{padding:1px 4px;white-space:nowrap}
.person-node{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:100%;max-width:182px;min-height:170px;border:1px solid #d8ddd0;border-radius:12px;padding:8px;background:#fff;color:var(--ink);text-align:center;box-shadow:0 2px 5px #46604b0a;transition:transform .18s,border-color .18s,box-shadow .18s,opacity .18s}
.person-node:hover{transform:translateY(-2px);border-color:var(--sage);box-shadow:0 6px 14px #46604b16}
.person-node.is-selected{border:2px solid var(--coral);background:#fff9f4;box-shadow:0 0 0 3px #f7e0d6}
.person-node.is-dim{opacity:.7}
.person-node.is-on-path{border-color:#9dbe9f;background:#f8fdf5}
.person-node .avatar{flex:0 0 auto;width:84px;height:105px;border-radius:9px}
.avatar{display:grid;place-items:center;overflow:hidden;border:1px solid #d5dfd0;background:#edf2e8;color:#587764;font-family:"Songti SC",serif;font-size:22px;font-weight:700}
.avatar.portrait{display:block;object-fit:contain;background:#faf5ec}
.avatar.tone-coral{background:#f7e6dc;color:#a75f58}
.avatar.tone-blue{background:#e8f0f5;color:#668ca0}
.avatar.tone-plum{background:#efe9ef;color:#866d84}
.person-node>span{min-width:0;width:100%}
.person-node strong{display:block;font-size:15px;line-height:1.25;white-space:normal}
.person-node small{display:block;margin-top:3px;color:#718078;font-size:10px;line-height:1.25}
.core-result{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:17px;border-radius:9px;padding:9px;background:#f7f0e6;color:#6d5b4a;font-size:12px;font-weight:700}
.core-result b{color:var(--coral)}
.root-couple{display:flex;align-items:center;justify-content:center;gap:9px;margin:7px 0}
.root-couple .person-node{max-width:175px}
.union{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;min-width:34px;border-top:2px solid var(--coral);color:#b45d59;font-size:10px}
.child-stem{position:relative;height:44px;margin:0 13%}
.child-stem:before{content:"";position:absolute;left:50%;top:0;height:23px;border-left:2px solid var(--blue)}
.child-stem:after{content:"";position:absolute;left:0;right:0;top:22px;border-top:2px solid var(--blue)}
.child-stem span{position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);padding:0 8px;background:#fdfbf3;color:#668fa4;font-size:11px}
.rong-branches{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.branch-card{padding:16px;background:#fffefa}
.branch-card h3{font-size:21px;color:var(--sage)}
.branch-card .person-node{max-width:none}
.branch-card .pair{display:flex;align-items:center;gap:5px}
.branch-card .pair .person-node{min-width:0;flex:1}
.branch-card .pair .person-node .avatar{width:min(76px,100%);height:auto;aspect-ratio:4/5}
.branch-card .pair .person-node strong{font-size:13px}
.branch-card .pair .person-node small{font-size:9px}
.branch-card .union{min-width:22px;font-size:0}
.branch-card .tagline{display:block;margin:15px 0 8px;border-top:1px dashed #cdd9c9;padding-top:8px;color:#6f8791;font-size:11px;font-weight:700}
.branch-card .offspring{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
.branch-card .offspring.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.branch-card .offspring .person-node{display:grid;justify-items:center;gap:3px;min-height:160px;text-align:center}
.branch-card .offspring .person-node .avatar{width:min(76px,100%);height:auto;aspect-ratio:4/5}
.branch-card .offspring.three .person-node .avatar{width:min(65px,100%)}
.branch-card .offspring .person-node strong{font-size:12px}
.branch-card .offspring .person-node small{font-size:9px}
.branch-card .single{max-width:220px;margin:auto}
.branch-warning{margin:14px 0 0;border-left:3px solid #c99962;padding:8px 11px;background:#fff5e9;color:#756348;font-size:11px;line-height:1.6}
.house-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.house-card{padding:22px;background:#fffefa}
.house-card h3{color:var(--sage)}
.house-title{display:grid;place-items:center;min-height:57px;border:1px solid #c3d6c3;border-radius:12px;background:#eaf2e7;color:#436b58;font-family:"Songti SC",serif;font-size:22px;font-weight:700}
.house-chain{display:grid;justify-items:center}
.chain-link{height:34px;border-left:2px solid var(--blue)}
.house-chain .person-node{width:100%;max-width:220px}
.house-couple{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;max-width:460px;margin-top:24px}
.house-couple .person-node{flex:1;min-width:0}
.house-split{display:flex;justify-content:center;gap:10px;width:100%;margin-top:9px}
.house-split .person-node{flex:1;max-width:180px}
.house-note{margin:15px 0 0!important;border-top:1px dashed var(--line);padding-top:10px}
.legend{display:flex;flex-wrap:wrap;gap:10px 20px;margin:15px 0 0;color:#647268;font-size:11px}
.legend>span{display:inline-flex;align-items:center;gap:6px}
.legend-line{display:inline-block;width:24px;border-top:3px solid var(--blue)}
.legend-line.marriage{border-color:var(--coral)}
.legend-line.sibling{border-color:var(--sage);border-top-style:dashed}
.legend-line.concubine{border-color:var(--gold);border-top-style:dotted}
.legend-arrow{font-size:17px;font-style:normal;font-weight:800;line-height:1;color:#719684}
.legend-band{display:inline-block;width:24px;height:11px;border:1px solid #bbd3bc;border-radius:3px;background:#e7f0e5}
.diagram-note{margin:14px 0 0;color:#718077;font-size:11px;line-height:1.7}
.detail-panel{position:sticky;top:0;align-self:start;display:flex;flex-direction:column;min-height:100vh;max-height:100vh;overflow:auto;border-left:1px solid #d4dfd2;background:#fffdf7}
.panel-head{padding:31px 25px 24px;background:linear-gradient(145deg,#d8e9d8,#f0f3e4 66%,#f9e7dc);border-bottom:1px solid #ccd8ca}
.panel-head p{margin:0 0 12px;color:#658472;font-size:10px;font-weight:800;letter-spacing:.16em}
.panel-head h2{margin:0 0 5px;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:30px;line-height:1.2}
.panel-head span{color:#708074;font-size:11px}
.detail{padding:24px 25px}
.detail .kicker{margin:0 0 9px;color:var(--coral);font-size:11px;font-weight:800;letter-spacing:.1em}
.detail h3{margin:0 0 12px;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:29px;line-height:1.2}
.detail p{margin:0 0 15px;color:#536059;font-size:13px;line-height:1.8}
.detail .detail-top{display:flex;align-items:center;gap:13px;margin-bottom:16px}
.detail .detail-top .avatar{flex:0 0 auto;width:152px;height:190px;border-radius:12px;font-size:33px}
.detail .detail-top h3{margin-bottom:0}
.detail .detail-top small{color:var(--muted);font-size:11px}
.detail h4{margin:21px 0 8px;color:#68766c;font-size:11px;letter-spacing:.1em}
.route-steps{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:13px 0 17px}
.route-steps span{border:1px solid #d7e2d3;border-radius:9px;padding:5px 8px;background:#f6faf3;color:#4b6c56;font-size:12px;font-weight:700}
.route-steps i{color:#8ca59a;font-style:normal}
.detail .result{border-left:3px solid var(--coral);padding:10px 12px;background:#f9eee7;color:#7d5149;font-size:13px;line-height:1.7}
.relation-list{display:grid;gap:7px;margin:0;padding:0;list-style:none}
.relation-list li{display:flex;justify-content:space-between;align-items:center;gap:6px;border:1px solid #dce4d9;border-radius:9px;padding:8px 10px;background:#fcfdf9}
.relation-list button{border:0;background:transparent;color:#385d4b;text-align:left;font-size:12px;font-weight:700}
.relation-list span{color:#7c8a80;font-size:10px;text-align:right}
.detail-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.detail-actions a{display:inline-flex;align-items:center;min-height:34px;border:1px solid #6c947a;border-radius:8px;padding:6px 10px;background:#668a71;color:white;font-size:11px;font-weight:700;text-decoration:none}
.detail-actions a.secondary{background:white;color:#4f7660}
.detail-actions .back-to-diagram{display:none}
.panel-foot{margin:auto 25px 24px;border-top:1px solid #dce4d9;padding-top:17px}
.panel-foot strong{color:var(--sage);font-size:12px}
.panel-foot p{margin:4px 0 0;color:var(--muted);font-size:11px;line-height:1.7}
.source-foot{display:flex;justify-content:space-between;gap:25px;max-width:1680px;margin:auto;border:1px solid #dce3d6;border-top:0;padding:20px 35px 30px;background:#f8f6ed;color:#758078;font-size:11px}
.source-foot p{max-width:1100px;margin:0;line-height:1.7}
.generation-preface{margin:0 0 13px;border-left:3px solid var(--sage);padding:7px 10px;background:#eef4e9;color:#587062;font-size:12px;line-height:1.6}
.generation-lane{display:grid;grid-template-columns:112px minmax(0,1fr);gap:12px;min-width:0;border:1px solid #ccdacc;border-radius:17px;padding:12px;background:#f3f7ef;box-shadow:0 3px 11px #405b4a0a}
.generation-lane[data-generation-lane="2"]{background:#f6f5eb}
.generation-lane[data-generation-lane="3"]{background:#f8f1eb}
.generation-lane[data-generation-lane="4"]{background:#f1f1f7}
.generation-label{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:12px;background:#dbe9db;color:#3c6651;text-align:center}
.generation-lane[data-generation-lane="2"] .generation-label{background:#e9e9d8;color:#696e47}
.generation-lane[data-generation-lane="3"] .generation-label{background:#f1dfd3;color:#925e51}
.generation-lane[data-generation-lane="4"] .generation-label{background:#e2dfeb;color:#6e6183}
.generation-label strong{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:18px;line-height:1.25}
.generation-label span{font-size:10px;letter-spacing:.04em}
.generation-content{min-width:0}
.generation-columns{display:grid;gap:11px;min-width:0}
.generation-columns.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.generation-columns.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.generation-group{container-type:inline-size;min-width:0;border:1px solid #d9e0d4;border-top:4px solid #9ab9a0;border-radius:13px;padding:12px;background:#fffdf8}
.generation-group.branch-long{border-top-color:#b89567}
.generation-group.branch-second{border-top-color:#b77672}
.generation-group.branch-min{border-top-color:#8fa8a0}
.generation-group.branch-ning{border-top-color:#99a8b9}
.generation-group.branch-rong{border-top-color:#bb9e81}
.generation-group.is-dim{opacity:.72}
.generation-group h3{margin:0 0 10px;color:#425e50;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:19px;line-height:1.3}
.generation-group p{margin:10px 0 0;border-top:1px dashed #d9dfd5;padding-top:9px;color:#69766b;font-size:11px;line-height:1.6}
.generation-people{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:8px;min-width:0}
.generation-people.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.generation-people.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.generation-people .person-node{max-width:none;min-width:0;min-height:155px;padding:6px}
.generation-people .person-node .avatar{width:min(82px,100%);height:auto;aspect-ratio:4/5}
.generation-people .person-node strong{font-size:13px}
.generation-people .person-node small{font-size:9px}
.generation-people .person-node:only-child{grid-column:1/-1;justify-self:center;width:min(100%,165px)}
.root-group .generation-people{max-width:390px;margin:auto}
.generation-step{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:47px;color:#78978b;text-align:center}
.generation-step span{font-size:25px;font-weight:700;line-height:1}
.generation-step small{font-size:10px;font-weight:700;letter-spacing:.08em}
.generation-conclusion{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:16px;border-radius:11px;padding:11px 13px;background:#f5eadf;color:#6f5a4f;font-size:11px;line-height:1.5}
.generation-conclusion span{border-radius:100px;padding:3px 7px;background:#ca8374;color:white;font-weight:700}
.generation-conclusion i{flex:1 1 100%;height:0}
@container (max-width:490px){.generation-people.cols-3,.generation-people.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1150px){.generation-columns.cols-3{grid-template-columns:1fr}}
@media(max-width:780px){
  .generation-lane{grid-template-columns:1fr;gap:8px;padding:8px}
  .generation-label{flex-direction:row;justify-content:flex-start;padding:8px 11px;text-align:left}
  .generation-label strong{font-size:17px}
  .generation-columns.cols-2,.generation-columns.cols-3{grid-template-columns:1fr}
  .generation-group{padding:10px}
  .generation-people.cols-3,.generation-people.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .generation-group .person-node .avatar{width:min(84px,100%)}
}
@media(max-width:1370px){
  .core-grid{grid-template-columns:1fr}
  .rong-branches{grid-template-columns:1fr}
  .branch-card .person-node{max-width:230px}
  .branch-card .offspring .person-node{max-width:none}
}
@media(max-width:1150px){
  .relation-app{grid-template-columns:1fr}
  .detail-panel{position:static;min-height:0;max-height:none;border-left:0;border-top:1px solid #d4dfd2}
  .detail{display:block}
  .detail-actions .back-to-diagram{display:inline-flex}
  .panel-foot{margin-top:0}
  .core-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rong-branches{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:780px){
  .relation-header{flex-wrap:wrap;justify-content:center;gap:7px;padding:16px}
  .relation-header .back{order:1;margin-right:auto}
  .relation-header .map-link{order:2}
  .header-title{order:3;width:100%}
  .intro{grid-template-columns:1fr;gap:8px;min-height:0}
  .section-line{display:block}
  .section-line>p{max-width:none;margin-top:8px}
  .core-grid,.house-grid{grid-template-columns:1fr}
  .rong-branches{grid-template-columns:1fr}
}
@media(max-width:520px){
  .intro{margin:12px 12px 0;padding:20px}
  .intro h2{font-size:28px}
  .topic-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));overflow:visible;margin:15px 12px 0}
  .topic-tab{min-width:0;padding:9px 11px;font-size:12px}
  .topic-tab:last-child{grid-column:1/-1}
  .diagram-section{padding:19px 12px 32px}
  .diagram{padding:9px}
  .path-card,.branch-card,.house-card{padding:13px}
  .person-node{gap:5px;padding:5px;min-height:160px}
  .person-node .avatar{width:min(80px,100%);height:auto;aspect-ratio:4/5}
  .person-node strong{font-size:13px}
  .person-node small{font-size:10px}
  .path-columns{gap:7px}
  .path-card h3{font-size:21px}
  .source-foot{display:block;padding:18px 15px}
  .source-foot p+p{margin-top:10px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}