:root{color-scheme:light;--bg:#fff;--ink:#000;--panel:#fff;--line:#000;--line-strong:#000;--muted:#000;--shadow:none;--mono:ui-monospace,Menlo,monospace}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:system-ui,sans-serif;font-size:13px;line-height:1.45}a{color:inherit}button,input,select,textarea{font:inherit;color:inherit}.app{display:flex;min-height:100vh;align-items:stretch}.nav{flex:none;width:230px;border-right:1px solid var(--line);background:#fff;padding:18px 14px 28px;position:-webkit-sticky;position:sticky;top:0;align-self:flex-start;height:100vh;overflow-y:auto}.nav .brand{font-size:17px;font-weight:700;padding:4px 8px 2px}.nav .brand small{display:block;font-size:10.5px;font-weight:400;color:var(--muted);margin-top:2px;line-height:1.3}.nav ol{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}.nav a.link{display:flex;align-items:baseline;gap:8px;padding:7px 9px;border-radius:6px;text-decoration:none;color:var(--ink);font-size:12.5px}.nav a.link:hover{background:#000;color:#fff}.nav a.link.active{background:var(--ink);color:#fff}.nav a.link .num{font:600 10px var(--mono);min-width:15px}.nav a.link.active .num{text-decoration:underline}.main{flex:1 1 auto;min-width:0;justify-content:center}.main,.pg{display:flex}.pg{width:100%;max-width:820px;min-height:100vh;padding:26px 28px 30px;flex-direction:column;gap:16px}.h1{font-size:21px;font-weight:700;margin:0}.sub{color:var(--muted);margin:0}.sec{font:600 10px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:#000}.box{border:1px solid var(--line-strong);border-radius:6px;padding:12px 14px;display:flex;flex-direction:column;gap:8px;background:#fff}details.box summary{cursor:pointer}details.box[open] summary{margin-bottom:8px}.row{display:flex;flex-wrap:wrap;gap:8px}.grid2{grid-template-columns:1fr 1fr;grid-gap:8px}.grid2,.grid3{display:grid;gap:8px}.grid3{grid-template-columns:1fr 1fr 1fr;grid-gap:8px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:8px;gap:8px}.btn{border:1.5px solid var(--ink);border-radius:6px;padding:7px 12px;font-weight:600;font-size:12px;background:#fff;white-space:nowrap;cursor:pointer;color:var(--ink);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:background .12s ease,color .12s ease}.btn:hover{background:#000;color:#fff}.btn.pri{background:var(--ink);color:#fff}.btn.pri:hover{background:#000}.btn.danger{border-style:dashed}.btn:disabled{cursor:not-allowed;text-decoration:line-through}.chip{border:1px solid #000;border-radius:999px;padding:2px 9px;font-size:11px;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center}.kv{display:flex;justify-content:space-between;gap:12px;font-size:12px}.kv b{font-weight:600}.mono{font-family:var(--mono);font-size:11.5px}.muted{color:var(--muted)}.disc{border:1px dashed #000;border-radius:6px;padding:8px 12px;font-size:11px;color:#000;background:#fff;order:999;margin-top:auto}.tbl{width:100%;border-collapse:collapse;font-size:11.5px}.tbl th{text-align:left;font:600 10px var(--mono);text-transform:uppercase;letter-spacing:.05em;color:#000;border-bottom:1px solid #000;padding:5px 8px}.tbl td{border-bottom:1px dotted #000;padding:6px 8px;vertical-align:top}.field{display:flex;flex-direction:column;gap:3px;font-size:11px}.field .in{border:1px solid #000;border-radius:5px;padding:7px 9px;color:#000;background:#fff;width:100%;font-size:12px}.field .in::placeholder{color:#000}textarea.in{resize:vertical;min-height:38px}.stat{border:1px solid var(--line-strong);border-radius:6px;padding:10px 12px;display:flex;flex-direction:column;gap:2px}.stat .n{font-size:19px;font-weight:700}.stat .l{font-size:10.5px;color:var(--muted)}.step{gap:8px;font-size:12px}.dot,.step{display:flex;align-items:center}.dot{width:14px;height:14px;border-radius:50%;border:1.5px solid var(--ink);flex:none;justify-content:center;font-size:9px}.dot.done{background:var(--ink);color:#fff}.dot.active{background:#fff}.tag{font:600 9.5px var(--mono);border:1px solid #000;border-radius:4px;padding:1px 5px;text-transform:uppercase}.node,.tag{display:inline-block}.node{border:1.5px solid var(--ink);border-radius:999px;padding:5px 11px;font-size:11px;background:#fff;white-space:nowrap;color:var(--ink)}.node.hyp{border-style:dashed}.nodebtn{cursor:pointer;font:inherit}.nodebtn.selected,.nodebtn:hover{background:var(--ink);color:#fff}.edge{font:600 9px var(--mono);color:#000}.alert{border:1.5px solid var(--ink);border-radius:6px;padding:12px 14px;background:#fff;display:flex;flex-direction:column;gap:6px}.ok{border:1px solid #000;border-radius:6px;padding:10px 14px;font-size:12px}.ph{border:1px dashed #000;border-radius:6px;background:#fff;display:flex;align-items:center;justify-content:center;font:11px var(--mono);color:#000}.statusline{font-size:11.5px;color:var(--muted);border-left:1px solid #000;padding-left:8px}.statusline.err,.statusline.ok{color:#000}.spin{display:inline-block;width:11px;height:11px;border:1.5px solid #000;border-top:1.5px solid var(--ink);border-radius:50%;animation:spin .7s linear infinite;vertical-align:-1px}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:720px){.app{flex-direction:column}.nav{width:100%;height:auto;position:static;border-right:0;border-bottom:1px solid var(--line)}.grid2,.grid3,.grid4{grid-template-columns:1fr 1fr}}