:root{--paper:#f8f8f5;--white:#fff;--ink:#23332d;--muted:#748078;--line:#dde4dc;--green:#477967;--pale:#edf3ec;--serif:"Songti SC","Noto Serif CJK SC",serif;--sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font:14px/1.55 var(--sans)}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.42;cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--green);outline-offset:2px}a{color:inherit}.shell{height:100dvh;min-height:620px;display:flex;flex-direction:column}.topbar{height:67px;flex:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 28px;border-bottom:1px solid var(--line);background:var(--white)}.brand{font:600 23px var(--serif);letter-spacing:.12em;text-decoration:none;white-space:nowrap}.brand-mark{display:inline-block;width:20px;height:22px;margin-right:9px;border-left:2px solid var(--green);border-right:2px solid var(--green);border-radius:50%;transform:rotate(25deg);vertical-align:-4px}.top-actions{display:flex;align-items:center;gap:8px}.top-actions button,.toolbar button,.minor,.field button{border:1px solid var(--line);background:var(--white);border-radius:7px;padding:7px 11px}.top-actions .new-life,.primary{background:var(--ink);border:1px solid var(--ink);color:#fff;border-radius:7px;padding:8px 14px}.intro{flex:none;padding:25px 28px 18px;display:flex;align-items:end;justify-content:space-between;gap:20px}.eyebrow{font-size:11px;color:var(--green);letter-spacing:.16em;font-weight:700}.intro h1{font:600 clamp(27px,3vw,38px)/1.28 var(--serif);letter-spacing:.025em;margin:5px 0 7px}.intro p{margin:0;color:var(--muted);font-size:12px}.current{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:12px;white-space:nowrap}.current strong{color:var(--ink);font-weight:600}.dot{width:7px;height:7px;background:var(--green);border-radius:50%}.toolbar{flex:none;display:flex;gap:8px;align-items:center;padding:11px 28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fbfcfa;flex-wrap:wrap}.toolbar .primary{padding:7px 13px}.toolbar .spacer{flex:1}.toolbar input[type=search]{width:185px;border:1px solid var(--line);border-radius:7px;padding:7px 11px;background:white}.toolbar button{white-space:nowrap}.toolbar button:hover,.top-actions button:hover,.minor:hover{border-color:#9bbca6;background:var(--pale)}.toolbar .primary:hover,.top-actions .new-life:hover{background:#355f50;color:#fff}.toolbar .count{color:var(--muted);font-size:11px;white-space:nowrap}.board-wrap{position:relative;flex:1;min-height:0;margin:15px 28px 12px;border:1px solid var(--line);border-radius:10px;background-color:#fcfdfa;background-image:radial-gradient(#dce5dc 0.75px,transparent .75px);background-size:22px 22px;overflow:hidden}.board-viewport{width:100%;height:100%;overflow:auto;cursor:grab;touch-action:pan-x pan-y;scrollbar-color:#bfd0c2 transparent}.board-viewport.dragging{cursor:grabbing;user-select:none}.board{position:relative;min-width:100%;min-height:100%;transform-origin:top left}.links{position:absolute;inset:0;pointer-events:none;overflow:visible}.links path{fill:none;stroke:#c9d6cc;stroke-width:1.5}.links path.active{stroke:var(--green);stroke-width:2.5}.links path.muted{opacity:.35}.links path.preview{stroke:#467b65;stroke-dasharray:5 5;stroke-width:2}.node{position:absolute;width:320px;min-height:292px;padding:18px 18px 16px;background:var(--white);border:1px solid #d7e2d7;border-radius:10px;box-shadow:0 4px 18px #263b2a0a;cursor:default}.node.active{border-color:var(--green);box-shadow:0 0 0 2px #c1d7c6,0 8px 24px #263b2a12}.node.path-active{border-color:#a6c2ab}.node:focus-visible{outline:2px solid var(--green)}.node-mark{position:absolute;top:20px;left:-7px;width:12px;height:12px;background:var(--white);border:2px solid var(--green);border-radius:50%}.node-top{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:11px;margin-bottom:10px}.node-top .age{font-variant-numeric:tabular-nums}.node-top .route-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--green)}.node h2{font:600 21px/1.3 var(--serif);margin:0 0 7px}.node .event-text{font-size:12px;color:#5c6e62;line-height:1.65;margin:0 0 14px;min-height:36px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.node .decision-list{border-top:1px solid var(--line);padding-top:8px;display:flex;flex-direction:column;gap:2px}.decision{position:relative;width:100%;display:flex;align-items:flex-start;gap:10px;text-align:left;border:0;border-radius:6px;background:transparent;padding:7px 5px 7px 0;min-height:46px}.decision:hover,.decision:focus-visible{background:var(--pale)}.decision.selected{background:#e7f0e6}.decision .pin{position:relative;display:block;flex:none;width:11px;height:11px;border-radius:50%;border:2px solid var(--green);background:white;margin:5px 1px 0 1px;touch-action:none;cursor:crosshair}.decision .pin:after{content:"";position:absolute;inset:-9px}.decision-body{min-width:0;flex:1}.decision strong{display:block;font-size:12px;font-weight:600}.decision small{display:block;color:var(--muted);font-size:10px;line-height:1.45;margin-top:1px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.decision .go{color:var(--green);font-size:15px;line-height:1.4}.node-footer{margin-top:10px;border-top:1px solid var(--line);padding-top:9px;color:var(--muted);font-size:10px}.node-footer button{border:0;background:transparent;color:var(--green);padding:0;font-size:11px}.node-footer strong{color:var(--green);font-weight:500}.node .outcome{background:#f4f7f2;border-radius:6px;padding:9px 10px;margin:1px 0 11px;font-size:11px;color:#5b6c61;line-height:1.55}.empty{position:absolute;top:45px;left:45px;color:var(--muted);font-size:13px}.board-help{position:absolute;right:15px;bottom:14px;padding:7px 11px;background:#fffefaeb;border:1px solid var(--line);border-radius:7px;color:var(--muted);font-size:10px;pointer-events:none}.statusline{flex:none;display:flex;justify-content:space-between;gap:10px;padding:0 30px 11px;color:var(--muted);font-size:10px}.statusline button{border:0;background:transparent;color:var(--muted);padding:0}.statusline button:hover{text-decoration:underline}dialog{width:min(580px,calc(100vw - 28px));max-height:calc(100dvh - 30px);overflow:auto;border:1px solid #d4dfd3;border-radius:12px;background:var(--paper);box-shadow:0 25px 75px #17392a2c;padding:24px}dialog::backdrop{background:#23352d65}.dialog-head{display:flex;align-items:start;justify-content:space-between;gap:15px;margin-bottom:17px}.dialog-head h2{font:600 24px var(--serif);margin:0}.dialog-head p{font-size:12px;color:var(--muted);margin:5px 0 0}.dialog-head button{border:0;background:transparent;font-size:23px;line-height:1;padding:0 4px}.field{display:flex;flex-direction:column;gap:5px;font-size:12px;margin:13px 0}.field input,.field textarea,.field select{border:1px solid #cbd8ca;border-radius:6px;background:white;padding:9px 10px;width:100%;line-height:1.6}.field textarea{resize:vertical}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.form-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}.form-actions p,.note{font-size:11px;color:var(--muted);margin:0}.form-actions .primary{white-space:nowrap}.minor{font-size:11px}.interventions{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.interventions button{border:1px solid var(--line);border-radius:6px;background:white;padding:9px 5px;font-size:11px}.interventions button.active{background:var(--pale);border-color:var(--green)}.info-content p{font-size:12px;line-height:1.8;color:#617167}.info-content h3{font:600 17px var(--serif);margin:18px 0 5px}.archive-button{width:100%;text-align:left;border:1px solid var(--line);background:white;padding:8px;border-radius:6px;margin:4px 0}.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:#263f33;color:white;padding:10px 16px;border-radius:7px;font-size:12px;z-index:10;max-width:min(90vw,480px)}.toast[hidden],.loading-cover[hidden]{display:none}.loading-cover{position:fixed;inset:0;z-index:20;background:#f8f8f5ee;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:15px;font:600 19px var(--serif);text-align:center;padding:20px}.loading-cover small{font:12px var(--sans);color:var(--muted)}#unity-canvas{position:fixed;left:-100px;top:-100px;width:2px;height:2px;opacity:0;pointer-events:none}
@media(max-width:700px){.shell{min-height:500px}.topbar{height:58px;padding:0 15px}.brand{font-size:19px}.top-actions button{padding:6px 8px;font-size:11px}.top-actions .new-life{padding:7px 10px}.intro{padding:18px 15px 13px;display:block}.intro h1{font-size:27px}.current{margin-top:8px;font-size:11px}.toolbar{padding:9px 14px;gap:6px}.toolbar input[type=search]{width:100%;order:2}.toolbar .spacer{display:none}.toolbar .count{order:3}.toolbar button{font-size:11px;padding:6px 9px}.board-wrap{margin:9px 9px 7px}.board-help{right:6px;bottom:6px;font-size:9px;padding:5px 7px}.statusline{padding:0 14px 8px}.node{width:286px}.two-col{grid-template-columns:1fr}.interventions{grid-template-columns:repeat(2,1fr)}dialog{padding:19px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

.toolbar .primary{background:var(--ink);border-color:var(--ink);color:#fff}.toolbar .primary:hover{background:#355f50;color:#fff}
.board-viewport{overflow:hidden;touch-action:none}.board{min-width:0;min-height:0;transform-origin:0 0;will-change:transform}#zoom-level{min-width:52px;text-align:center;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}.author-form{border-top:1px solid var(--line);padding-top:12px;margin:8px 0 10px}.author-form label{display:block;color:var(--ink);font-size:11px;font-weight:600}.author-form textarea{display:block;width:100%;min-height:96px;margin-top:6px;border:1px solid #cbd8ca;border-radius:7px;background:#fbfcfa;padding:9px 10px;font-size:12px;line-height:1.6;resize:vertical}.author-actions{display:flex;gap:6px;margin-top:8px}.author-actions select{width:95px;flex:none;border:1px solid var(--line);border-radius:6px;background:white;font-size:11px;padding:7px 4px}.author-actions button{flex:1;border:1px solid var(--ink);border-radius:6px;background:var(--ink);color:white;font-size:11px;padding:7px 5px}.author-actions button:hover{background:#355f50}.author-form>small{display:block;margin-top:6px;color:var(--muted);font-size:10px}.node .event-text{display:block;min-height:0;max-height:6.6em;overflow:auto;-webkit-line-clamp:unset;white-space:pre-wrap}.node{min-height:0}