:root{color-scheme:light dark;--bg: #f7f7f9;--panel-bg: #ffffff;--panel-border: #dcdce3;--fg: #1b1b20;--muted: #6b6b78;--accent: #2a6df4;--accent-soft: #dbe7ff;--error: #c63434;--ok: #2f7a2f;--code-bg: #f1f1f4;--tree-node: #eef3ff;--tree-node-var: #fff0d6;--tree-node-f: #e2f1e0;--plot-bg: #fafafc;--plot-grid: #d8d8e0;--plot-ref: #9a9aa6;--plot-eml: #2a6df4;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Noto Sans JP,sans-serif}@media (prefers-color-scheme: dark){:root{--bg: #15151a;--panel-bg: #1d1d24;--panel-border: #2e2e38;--fg: #e8e8ef;--muted: #9a9aa6;--accent: #78a6ff;--accent-soft: #1f2e55;--error: #ff7474;--ok: #74d374;--code-bg: #26262f;--tree-node: #1f2a44;--tree-node-var: #3a2f1a;--tree-node-f: #1d2e1b;--plot-bg: #1a1a22;--plot-grid: #33333d}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);line-height:1.5}code,.preset-source{font-family:ui-monospace,SFMono-Regular,Cascadia Mono,Menlo,Consolas,monospace;background:var(--code-bg);padding:.1em .35em;border-radius:4px;font-size:.92em}.site-header{padding:24px 32px 8px;max-width:1200px;margin:0 auto}.site-header h1{margin:0 0 4px;font-size:1.6rem}.site-header .tagline{margin:0 0 6px;color:var(--muted)}.site-header .paper{margin:0;font-size:.9rem;color:var(--muted)}.site-header a{color:var(--accent)}.grid{display:grid;gap:16px;padding:16px 32px 32px;max-width:1200px;margin:0 auto;grid-template-columns:1fr 1fr}@media (max-width: 860px){.grid{grid-template-columns:1fr}.site-header,.grid,.site-footer{padding-left:16px;padding-right:16px}}.panel{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:12px;padding:16px 18px;min-width:0}.panel-wide{grid-column:1 / -1}.panel h2{margin:0 0 12px;font-size:1.05rem}.hint{margin:4px 0 12px;color:var(--muted);font-size:.88rem}.field{display:block;margin-bottom:8px}.field span{display:inline-block;color:var(--muted);font-size:.85rem;margin-bottom:4px}textarea{width:100%;min-height:64px;padding:8px 10px;font-family:ui-monospace,SFMono-Regular,Cascadia Mono,Menlo,Consolas,monospace;font-size:.95rem;background:var(--code-bg);border:1px solid var(--panel-border);border-radius:6px;color:var(--fg);resize:vertical}input[type=number]{font:inherit;padding:4px 6px;background:var(--code-bg);color:var(--fg);border:1px solid var(--panel-border);border-radius:4px;width:90px}.status{margin:6px 0 10px;font-size:.85rem}.status.ok{color:var(--ok)}.status.error{color:var(--error)}.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:0;font-size:.92rem}.kv dt{color:var(--muted)}.kv dd{margin:0;word-break:break-all}.preset-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.preset-button{display:block;width:100%;text-align:left;background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:8px;padding:10px 12px;cursor:pointer;color:var(--fg);font:inherit;transition:background .15s,border-color .15s}.preset-button:hover{border-color:var(--accent);background:var(--accent-soft)}.preset-button .preset-name{display:block;font-weight:600;margin-bottom:2px}.preset-button .preset-source{display:inline-block;margin-right:8px;font-size:.82rem}.preset-button .preset-desc{display:block;color:var(--muted);font-size:.85rem;margin-top:4px}.plot-controls{display:flex;flex-wrap:wrap;gap:10px 16px;font-size:.88rem;color:var(--muted);margin-bottom:8px}.plot-controls .chk{display:inline-flex;align-items:center;gap:4px}.plot-message{font-size:.82rem;color:var(--muted);min-height:1.2em;margin-bottom:4px}.plot-svg-holder svg{width:100%;max-width:100%;height:auto}.plot-bg{fill:var(--plot-bg);stroke:var(--plot-grid)}.plot-zero{stroke:var(--plot-grid);stroke-dasharray:3 3}.plot-tick{stroke:var(--muted)}.plot-label{fill:var(--muted);font-size:11px}.plot-line{stroke-width:2}.plot-line-eml{stroke:var(--plot-eml)}.plot-line-ref{stroke:var(--plot-ref);stroke-dasharray:4 4}.tree-save{display:flex;align-items:center;gap:12px;margin:4px 0 12px;flex-wrap:wrap}.tree-save-msg{font-size:.85rem;color:var(--muted)}.tree-save-msg.ok{color:var(--ok)}.tree-save-msg.error{color:var(--error)}.preset-item{display:flex;align-items:stretch;gap:6px}.preset-item .preset-button{flex:1 1 auto;min-width:0}.preset-delete{flex:0 0 auto;width:32px;padding:0;border:1px solid var(--panel-border);background:var(--panel-bg);color:var(--muted);border-radius:8px;cursor:pointer;font-size:1.1rem;line-height:1}.preset-delete:hover{border-color:var(--error);color:var(--error);background:var(--panel-bg)}.tree-svg-holder{overflow-x:auto;padding:8px 0;position:relative}.tree-svg{display:block;max-width:100%;outline:none}.tree-svg:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.tree-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:4px}.tree-btn{padding:4px 12px;border:1px solid var(--panel-border);background:var(--panel-bg);color:var(--fg);border-radius:4px;font-size:.85rem;cursor:pointer}.tree-btn:hover:not(:disabled){background:var(--accent-soft)}.tree-btn:disabled{opacity:.5;cursor:not-allowed}.tree-node{transition:filter .12s ease}.tree-node:hover .tree-node-bg{filter:brightness(1.05)}.tree-node.is-selected .tree-node-bg{stroke:var(--accent);stroke-width:2.5;filter:drop-shadow(0 0 4px var(--accent-soft))}.tree-popover{position:absolute;z-index:10;display:flex;gap:4px;padding:4px;background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:6px;box-shadow:0 4px 12px #00000026}.tree-popover-btn{min-width:28px;padding:4px 8px;border:1px solid var(--panel-border);background:var(--panel-bg);color:var(--fg);border-radius:4px;font-family:ui-monospace,SFMono-Regular,Cascadia Mono,Menlo,Consolas,monospace;font-size:14px;font-weight:600;cursor:pointer}.tree-popover-btn:hover:not(:disabled){background:var(--accent-soft)}.tree-popover-btn[aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent);cursor:default;opacity:1}.tree-popover-btn:disabled:not([aria-pressed=true]){opacity:.5;cursor:not-allowed}.tree-edge{stroke:var(--muted);stroke-width:1.2}.tree-node-bg{stroke:var(--panel-border);stroke-width:1}.tree-node-one .tree-node-bg{fill:var(--tree-node)}.tree-node-var .tree-node-bg{fill:var(--tree-node-var)}.tree-node-f .tree-node-bg{fill:var(--tree-node-f)}.tree-node-label{fill:var(--fg);font-family:ui-monospace,SFMono-Regular,Cascadia Mono,Menlo,Consolas,monospace;font-size:14px;font-weight:600;pointer-events:none}.tree-node-value{fill:var(--muted);font-size:10px;pointer-events:none}.site-footer{max-width:1200px;margin:0 auto;padding:0 32px 32px;color:var(--muted);font-size:.85rem}