:root{
  --ink:#1d3028;--muted:#61736a;--line:#dde6df;--soft:#f4f7f4;--paper:#fff;
  --brand:#17392d;--brand-2:#245c43;--gold:#a87b2c;--danger:#a23b2a;--info:#1a5c8a;
  --radius:10px;--shadow:0 1px 3px rgba(20,50,35,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-size:14px;line-height:1.65}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-weight:600;color:var(--brand);line-height:1.35;margin:0}
h1{font-size:28px}h2{font-size:21px}h3{font-size:16px}
p{margin:8px 0}
button,input,select,textarea{font-family:inherit;font-size:14px}
input,select,textarea{border:1px solid var(--line);border-radius:6px;padding:8px 10px;background:#fff;color:var(--ink);width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid #bcd6c6;outline-offset:0;border-color:var(--brand-2)}
textarea{resize:vertical;min-height:70px}
label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 14px;border-radius:6px;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--soft);text-decoration:none}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-2)}
.btn.ghost{border-color:transparent;background:transparent}
.btn.danger{color:var(--danger);border-color:#e9cfc9}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.sm{padding:5px 10px;font-size:13px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.grow{flex:1}
.hidden{display:none!important}
.muted{color:var(--muted)}
.small{font-size:12px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.badge{display:inline-block;background:var(--soft);border:1px solid var(--line);border-radius:20px;padding:1px 10px;font-size:12px;color:var(--muted)}

/* 站点框架 */
.site-header{border-bottom:1px solid var(--line);background:#fff}
.header-inner{max-width:1120px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:9px;color:var(--brand);font-weight:600;font-size:18px}
.brand:hover{text-decoration:none}
.brand-seal{width:30px;height:30px;border-radius:7px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:17px}
.brand small{display:block;font-size:10px;letter-spacing:1px;color:var(--muted);font-weight:400}
.nav{display:flex;gap:20px;font-size:13px;flex:1}
.nav a{color:var(--muted)}
.header-actions{display:flex;gap:8px}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.hero{padding:76px 0 64px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#f7faf7,#fff)}
.hero h1{font-size:40px;letter-spacing:1px}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero-lead{font-size:17px;color:var(--muted);max-width:640px;margin:18px 0 26px}
.hero-points{display:flex;gap:24px;flex-wrap:wrap;margin:22px 0 0;font-size:13px;color:var(--muted)}
.hero-points span::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--gold);margin-right:8px;vertical-align:middle}
.section{padding:56px 0;border-bottom:1px solid var(--line)}
.section-head{max-width:680px;margin-bottom:28px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.feature{padding:20px}
.feature .n{font-size:12px;color:var(--gold);letter-spacing:1px}
.feature h3{margin:8px 0}
.feature p{color:var(--muted);font-size:13px}
.site-footer{padding:32px 0;font-size:13px;color:var(--muted)}
.footer-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* 表单与登录 */
.auth-wrap{max-width:420px;margin:56px auto;padding:26px}
.auth-wrap h2{margin-bottom:4px}
.tabs{display:flex;border-bottom:1px solid var(--line);margin:18px 0 8px}
.tabs button{flex:1;background:none;border:none;padding:10px;cursor:pointer;color:var(--muted);border-bottom:2px solid transparent}
.tabs button.on{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}
.form-actions{margin-top:18px;display:flex;gap:10px}
.notice{padding:10px 12px;border-radius:6px;font-size:13px;margin:10px 0}
.notice.err{background:#fdf1ee;color:var(--danger);border:1px solid #f0d5cf}
.notice.ok{background:#eef7f0;color:#256b3d;border:1px solid #cfe5d5}

/* 工作台 */
.app-shell{height:100vh;display:flex;flex-direction:column;overflow:hidden}
.app-top{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px solid var(--line);background:#fff;flex-shrink:0}
.app-top .title{font-weight:600;font-size:16px;color:var(--brand)}
.app-body{flex:1;display:flex;min-height:0}
.side{width:250px;border-right:1px solid var(--line);background:var(--soft);display:flex;flex-direction:column;flex-shrink:0}
.side-head{padding:12px;border-bottom:1px solid var(--line)}
.side-list{overflow:auto;padding:8px;flex:1}
.side-item{padding:8px 10px;border-radius:6px;cursor:pointer;font-size:13px;display:flex;justify-content:space-between;gap:8px}
.side-item:hover{background:#e8f0ea}
.side-item.on{background:var(--brand);color:#fff}
.side-item small{opacity:.7}
.canvas-wrap{flex:1;position:relative;overflow:auto;background:#fcfdfc;min-width:0}
.canvas-tools{position:sticky;top:0;left:0;z-index:2;display:flex;gap:8px;padding:10px 12px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);flex-wrap:wrap}
#canvas{min-width:100%;min-height:600px;display:block}
.panel{width:310px;border-left:1px solid var(--line);background:#fff;overflow:auto;flex-shrink:0;padding:16px}
.panel h3{margin-bottom:6px}
.empty{padding:48px 20px;text-align:center;color:var(--muted)}
.node-card{cursor:pointer}
.node-card rect{fill:#fff;stroke:#9fbca9;stroke-width:1.2}
.node-card.sel rect{stroke:var(--brand);stroke-width:2.4;fill:#eef6f0}
.node-card.private rect{stroke-dasharray:4 3}
.node-card text{font-size:13px;fill:#1d3028;text-anchor:middle;dominant-baseline:central}
.node-card .meta{font-size:10px;fill:#61736a}
.link{stroke:#a9c2b1;stroke-width:1.4;fill:none}
.link.spouse{stroke:var(--gold);stroke-dasharray:5 3}
.modal-back{position:fixed;inset:0;background:rgba(18,38,28,.35);display:grid;place-items:center;z-index:20;padding:20px}
.modal{background:#fff;border-radius:12px;padding:22px;width:min(520px,100%);max-height:86vh;overflow:auto;box-shadow:0 12px 40px rgba(0,0,0,.16)}
.modal h3{margin-bottom:12px}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}
.list-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--brand);color:#fff;padding:10px 18px;border-radius:8px;z-index:40;font-size:13px;box-shadow:var(--shadow)}
.project-card{padding:18px;display:flex;justify-content:space-between;align-items:center;gap:14px;cursor:pointer}
.project-card:hover{border-color:#a9c9b5}
.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px;margin-top:18px}

@media(max-width:900px){
  .side{width:180px}.panel{width:250px}
  .hero h1{font-size:30px}
  .nav{display:none}
}
.ncard{cursor:pointer}
.ncard.sel rect{stroke:#17392d;stroke-width:2.4;fill:#eef6f0}
body.printing > *:not(#print-root){display:none!important}
#print-root svg{max-width:100%;height:auto}
@media print{
  .site-header,.site-footer,.app-top,.side,.panel,.canvas-tools,.no-print,
  .guide-toc,.back-top,.toc-cta,.cta-band,.canvas-legend,.person-detail,
  .figure-cap,.figure-foot,.auth-tips{display:none!important}
  .app-shell{height:auto;overflow:visible}
  .canvas-wrap{overflow:visible}
  #canvas{width:100%}
  .guide-layout,.guide-body,.demo-canvas{overflow:visible}
  @page{size:A3 landscape;margin:12mm}
}

/* ── v2：内容页、示例页与体验增强 ───────────────────────── */
.eyebrow{color:var(--gold);letter-spacing:2px}
.section-alt{background:linear-gradient(180deg,#fafcf9,#fff)}
.notice.warn{background:#fdf8ec;color:#7a5b19;border:1px solid #eddfb9}
.notice.info{background:#eef5f2;color:#245a48;border:1px solid #cfe3d8}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.grid-2 .feature,.grid-3 .feature{padding:22px}
.cta-band{background:linear-gradient(180deg,#fff,#f2f7f3);border-bottom:1px solid var(--line)}
.cta-band h2{margin-bottom:6px}

/* 首页 */
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:44px;align-items:center}
.hero-slim{padding:56px 0 46px}
.hero h1{font-size:40px;letter-spacing:1px}
.hero-figure{padding:0;overflow:hidden}
.figure-cap{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);font-size:13px;font-weight:600;color:var(--brand)}
.figure-foot{padding:10px 16px;border-top:1px solid var(--line)}
.home-preview{min-height:258px;overflow:auto;background:#fcfdfc;display:grid;place-items:center;padding:8px}
.home-preview svg{width:100%;height:auto;display:block}
.home-preview .empty{padding:20px}
.knowledge{display:block;padding:18px;transition:border-color .18s,transform .18s}
.knowledge:hover{border-color:#a9c9b5;transform:translateY(-2px);text-decoration:none}
.knowledge span{display:block;font-size:11px;letter-spacing:1px;color:var(--gold)}
.knowledge strong{display:block;margin:6px 0 4px;font-size:16px;color:var(--brand)}
.knowledge small{color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:36px;align-items:start}
.faq-list details,.guide-sec details{border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin-bottom:10px;background:#fff}
.faq-list summary,.guide-sec summary{cursor:pointer;font-weight:600;color:var(--brand)}
.faq-list details p,.guide-sec details p{margin:10px 0 2px;color:var(--muted);font-size:13px}

/* 修谱指南 */
.guide-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:44px;padding-top:36px;padding-bottom:60px;align-items:start}
.guide-toc{position:sticky;top:20px}
.toc-inner{display:flex;flex-direction:column;gap:2px;padding:16px;border:1px solid var(--line);border-radius:10px;background:var(--soft)}
.toc-inner>a{padding:7px 10px;border-radius:6px;font-size:13px;color:var(--muted)}
.toc-inner>a:hover{background:#e8f0ea;text-decoration:none}
.toc-inner>a.on{background:#fff;color:var(--brand);font-weight:600;box-shadow:var(--shadow)}
.toc-cta{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.toc-cta .btn{flex:1}
.guide-body{min-width:0}
.guide-hero{padding:8px 0 30px;border-bottom:1px solid var(--line)}
.guide-hero h1{font-size:34px;margin:8px 0 16px}
.guide-hero h1 em{font-style:normal;color:var(--gold)}
.guide-hero .lead{font-size:16px;color:var(--muted);max-width:760px;margin-bottom:22px}
.guide-sec{padding:38px 0;border-bottom:1px solid var(--line);scroll-margin-top:24px}
.guide-sec>h2{font-size:24px;margin-bottom:10px}
.guide-sec>p{color:var(--muted)}
.steps{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.step{display:flex;gap:18px;padding:18px 20px;border:1px solid var(--line);border-radius:10px;background:#fff}
.step-n{flex:0 0 42px;height:42px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:600}
.step h3{margin-bottom:6px}
.step p{font-size:13px;color:var(--muted);margin:6px 0}
.interview-card{padding:20px 24px}
#interview-list{padding-left:22px;margin:14px 0 0}
#interview-list li{padding:6px 0;font-size:13px;line-height:1.8}
.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:8px;background:#fff}
.data-table{width:100%;border-collapse:collapse;font-size:13px;min-width:620px}
.data-table th{background:var(--soft);color:var(--brand);text-align:left;padding:10px 12px;font-weight:600;border-bottom:1px solid var(--line);white-space:nowrap}
.data-table td{padding:9px 12px;border-bottom:1px solid #eef3ef;vertical-align:top}
.data-table tr:last-child td{border-bottom:none}
.data-table tbody tr:hover{background:#fafcf9}
.term-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:18px}
.term{padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:#fff}
.term dt{font-weight:600;color:var(--brand);margin-bottom:5px}
.term dd{margin:0;font-size:13px;color:var(--muted)}
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin-top:18px}
.case-grid .feature{padding:18px}
.guide-cta{padding:26px 0;border:none}
.back-top{position:fixed;right:22px;bottom:22px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--brand);font-size:18px;cursor:pointer;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s;z-index:15}
.back-top.show{opacity:1;pointer-events:auto}

/* 示例家谱页 */
.canvas-card{overflow:hidden}
.canvas-legend{display:flex;gap:20px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.canvas-legend span{display:inline-flex;align-items:center;gap:7px}
.lg-box{width:16px;height:12px;border:1.2px solid #9fbca9;border-radius:3px;background:#fff;display:inline-block}
.lg-box.dashed{border-style:dashed}
.lg-line{width:20px;height:0;border-top:1.5px solid #a9c2b1;display:inline-block}
.lg-line.spouse{border-top:2px dashed var(--gold)}
.demo-canvas{overflow:auto;min-height:300px;background:#fcfdfc;padding:10px}
.demo-canvas svg{display:block}
.person-detail{margin-top:16px;padding:18px 22px}
.detail-grid{display:grid;grid-template-columns:120px minmax(0,1fr);gap:8px 14px;font-size:13px;margin-top:12px}
.detail-k{color:var(--muted)}
.detail-v{color:var(--ink);word-break:break-word}
.tag-private{display:inline-block;background:#fdf1ee;color:var(--danger);border:1px solid #f0d5cf;border-radius:20px;padding:0 7px;font-size:11px}
.gen-group{margin-bottom:22px}
.gen-group h3{margin-bottom:8px}

/* 工作台增强 */
.auth-tips{margin-top:18px;border-top:1px solid var(--line);padding-top:12px}
.side-hint{margin-top:8px}
.quick-tips{display:flex;gap:18px;flex-wrap:wrap;margin:16px 0 4px;padding:10px 14px;background:var(--soft);border-radius:8px}
.onboard{padding:24px;margin-top:20px}
.onboard .n{font-size:12px;color:var(--gold);letter-spacing:1px}
.onboard h3{margin:8px 0 4px}
.onboard p{margin:6px 0}
.canvas-onboard{padding:60px 20px;text-align:center;color:var(--muted)}
.canvas-onboard .seal{width:52px;height:52px;margin:0 auto 16px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:26px}
.canvas-onboard h3{color:var(--brand);margin-bottom:10px}
.canvas-onboard p{margin-bottom:20px}
.family-box{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:10px 12px;margin:12px 0;font-size:12px}
.family-row{display:flex;gap:10px;align-items:baseline;margin:3px 0}
.family-k{flex:0 0 78px;color:var(--muted)}
.family-link{border:none;background:none;padding:0;color:var(--brand-2);cursor:pointer;font-size:12px;text-decoration:underline}
.panel code,.guide-sec code{background:var(--soft);padding:1px 5px;border-radius:4px;font-size:12px}

@media(max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-figure{max-width:560px}
  .guide-layout{grid-template-columns:1fr;gap:24px}
  .guide-toc{position:static}
  .toc-inner{flex-direction:row;flex-wrap:wrap;align-items:center}
  .toc-inner>a{white-space:nowrap}
  .toc-cta{width:100%;margin-top:8px}
  .faq-layout{grid-template-columns:1fr;gap:16px}
}
@media(max-width:720px){
  .header-inner{padding:12px 16px;gap:12px}
  .container{padding:0 16px}
  .hero{padding:44px 0 36px}
  .hero h1,.guide-hero h1{font-size:28px}
  .section{padding:38px 0}
  .app-top{flex-wrap:wrap;gap:6px;padding:8px 10px}
  .app-top .title{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .app-top .btn.sm{padding:4px 8px;font-size:12px}
  .app-body{flex-direction:column;overflow:auto}
  .side{width:100%;border-right:none;border-bottom:1px solid var(--line);max-height:190px}
  .side-list{max-height:110px}
  .canvas-wrap{min-height:56vh}
  .panel{width:100%;border-left:none;border-top:1px solid var(--line);max-height:none}
  #canvas{min-height:360px}
  .detail-grid{grid-template-columns:96px minmax(0,1fr)}
  .back-top{right:14px;bottom:14px}
}