:root{
  --paper:#f4f1eb;--paper2:#ede9e0;--paper3:#e4dfd4;
  --ink:#1c1b18;--ink2:#3e3c37;--ink3:#7a7770;--ink4:#b0aca3;--ink5:#d0cdc6;
  --blue:#1e3fa0;--blueH:#152d78;--blueBg:#e8edfc;--green:#166534;--red:#9b1c1c;
  --mono:'DM Mono',monospace;--serif:'Libre Baskerville',Georgia,serif;--r:2px;
}
*{box-sizing:border-box} html,body{margin:0;height:100%} body{font-family:var(--serif);background:var(--paper);color:var(--ink)}
a{text-decoration:none;color:inherit} button,input,textarea,select{font:inherit}
.shell{display:flex;height:100vh}.sidebar{width:270px;border-right:1px solid var(--ink5);padding:20px 18px;overflow:auto;background:var(--paper)}
.logo{padding-bottom:16px;border-bottom:1px solid var(--ink5);margin-bottom:16px}.logo h1{font-size:22px;margin:0 0 4px}.logo p{margin:0;color:var(--ink3);font-style:italic;font-size:12px}
.search{position:relative;margin-bottom:16px}.search input{width:100%;padding:8px 10px;border:1px solid var(--ink5);background:#fff;border-radius:var(--r)}
.search-results{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border:1px solid var(--ink5);max-height:220px;overflow:auto;z-index:20}.search-results.open{display:block}
.search-results button{display:block;width:100%;text-align:left;border:0;background:#fff;padding:8px 10px;cursor:pointer}.search-results button:hover{background:var(--paper2);color:var(--blue)}
.section-label{font-family:var(--mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--ink4);padding:10px 0 4px;border-top:1px solid var(--paper3);margin-top:4px}
.side-item{display:block;width:100%;text-align:left;border:0;background:none;padding:5px 3px;color:var(--ink2);cursor:pointer}.side-item:hover{color:var(--blue)} .side-item.active{font-weight:700;background:var(--paper2)}
.side-item small{display:block;color:var(--ink4);font-family:var(--mono);font-size:10px}
.main{flex:1;display:flex;flex-direction:column;overflow:hidden}.topbar{height:48px;border-bottom:1px solid var(--ink5);display:flex;justify-content:space-between;align-items:center;padding:0 20px}.crumb{font-family:var(--mono);font-size:12px;color:var(--ink3)}
.topbar form{display:flex;gap:8px;align-items:center}.topbar select,.btn,.field input,.field textarea,.field select{border:1px solid var(--ink5);background:#fff;border-radius:var(--r)}
.btn{padding:6px 12px;cursor:pointer}.btn.primary{background:var(--blue);color:#fff;border-color:var(--blue)} .btn.primary:hover{background:var(--blueH)} .btn.ghost{background:var(--paper2)} .btn.link{border:none;background:none;color:var(--blue);padding:0}
.canvas{flex:1;overflow:auto;padding:28px 34px 80px;position:relative}.tree{display:flex;flex-direction:column;align-items:center;min-width:100%;position:relative}.row{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-top:30px;position:relative;z-index:1}.row:first-child{margin-top:0}.tree.compact .row{margin-top:16px}.tree.dense .row{margin-top:8px}
.connector{position:absolute;inset:0;pointer-events:none;z-index:0} .connector line{stroke:var(--ink5);stroke-width:1}
.node-wrap{display:flex;align-items:center;gap:6px}.node-col{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:120px}.node-name{font-size:15px;line-height:1.2;text-align:center}.node-name.placeholder{color:var(--ink4);font-style:italic}.node-name.self{font-weight:700;border-bottom:1px solid var(--ink)}
.node-note,.meta-note{font-family:var(--mono);font-size:10px;color:var(--ink3);text-align:center;max-width:160px}
.plus{width:18px;height:18px;border-radius:50%;border:1px solid var(--ink5);background:var(--paper);display:flex;align-items:center;justify-content:center;color:var(--ink4);cursor:pointer}.plus:hover{border-color:var(--blue);color:var(--blue);background:var(--blueBg)}
.inline-add{position:fixed;z-index:30;background:#fff;border:1px solid var(--ink5);padding:14px 16px;width:250px;box-shadow:0 8px 28px rgba(0,0,0,.08)} .inline-add h3{font-family:var(--mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--ink3);margin:0 0 10px}
.field{margin-bottom:10px}.field label{display:block;font-family:var(--mono);font-size:10px;color:var(--ink4);text-transform:uppercase;letter-spacing:.8px;margin-bottom:4px}.field input,.field textarea,.field select{width:100%;padding:6px 8px}.field textarea{height:42px;resize:vertical}
.drawer{position:fixed;top:48px;right:0;width:320px;height:calc(100vh - 48px);transform:translateX(100%);transition:transform .25s;background:var(--paper);border-left:1px solid var(--ink5);padding:18px 18px 22px;overflow:auto;z-index:25}.drawer.open{transform:translateX(0)}
.drawer h2{margin:0 0 12px;font-size:22px}.pill{display:inline-block;padding:2px 8px;border-radius:999px;font-family:var(--mono);font-size:10px;background:var(--paper2);color:var(--ink3)}
.drawer .detail{margin-bottom:12px}.drawer .detail strong{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.9px;color:var(--ink4);text-transform:uppercase;margin-bottom:3px}
.notice{padding:10px 12px;border:1px solid var(--ink5);background:#fff;border-radius:var(--r);font-size:12px;color:var(--ink2);margin-bottom:10px}.notice.warn{border-color:#e8d7a7;background:#fffaf0}.hint{position:absolute;bottom:20px;right:24px;font-family:var(--mono);font-size:10px;color:var(--ink4);text-align:right}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:8px 14px;font-family:var(--mono);font-size:11px;opacity:0;transition:opacity .2s;z-index:40}.toast.show{opacity:1}
.admin-shell{display:flex;height:100vh}.admin-sidebar{width:240px;border-right:1px solid var(--ink5);padding:18px 16px;background:var(--paper)}.admin-main{flex:1;display:flex;flex-direction:column}.admin-content{flex:1;overflow:auto;padding:24px}
.admin-nav button{display:flex;gap:8px;width:100%;padding:8px 10px;border:0;background:none;text-align:left;cursor:pointer}.admin-nav button.active{background:var(--ink);color:var(--paper)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:20px}.stat{background:#fff;border:1px solid var(--ink5);padding:16px}.stat .num{font-size:28px;font-weight:700}
.table-wrap{background:#fff;border:1px solid var(--ink5);overflow:auto;margin-bottom:20px}.table-wrap table{width:100%;border-collapse:collapse}.table-wrap th,.table-wrap td{padding:9px 12px;border-bottom:1px solid var(--paper3);text-align:left;font-size:12px}.table-wrap th{font-family:var(--mono);font-size:10px;letter-spacing:.8px;text-transform:uppercase;color:var(--ink4);background:var(--paper)}
.hidden{display:none}
@media(max-width:900px){.sidebar{display:none}.canvas{padding:18px 14px 70px}.node-col{min-width:88px}.drawer{width:100%}.admin-sidebar{display:none}}