:root{--bg: #0a0e17;--card: #141b2d;--card-2: #1a2336;--border: #243049;--border-2: #36456a;--text: #e6ecf5;--muted: #a3b1cc;--blue: #6c8cff;--green: #34d399;--yellow: #fbbf24;--red: #f87171;--purple: #8b5cf6;--radius: 12px;--radius-sm: 8px;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--sans: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);-webkit-font-smoothing:antialiased}#root{min-height:100vh}a{color:var(--blue)}.app{max-width:1040px;margin:0 auto;padding:28px 20px 80px}.topbar{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}.brand h1{font-size:30px;margin:0;letter-spacing:-.02em}.brand .sub{color:var(--muted);font-size:14px;margin-top:4px}.intro{color:var(--muted);font-size:15px;line-height:1.7;margin:18px 0 6px;max-width:760px}.lang{display:inline-flex;border:1px solid var(--border-2);border-radius:999px;overflow:hidden;background:var(--card)}.lang button{background:transparent;color:var(--muted);border:0;padding:7px 14px;font-size:13px;font-weight:600;cursor:pointer}.lang button.active{background:var(--blue);color:#0a0e17}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:24px 0 18px}.tab{background:var(--card);border:1px solid var(--border);color:var(--muted);padding:10px 14px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.tab:hover{border-color:var(--border-2);color:var(--text)}.tab.active{background:linear-gradient(180deg,#20294180,#1a233680);border-color:var(--blue);color:var(--text);box-shadow:0 0 0 1px #6c8cff40}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.section-title{font-size:20px;margin:0 0 6px}.section-desc{color:var(--muted);font-size:14px;line-height:1.7;margin:0 0 18px;max-width:720px}.note{margin-top:18px;padding:12px 14px;border-left:3px solid var(--border-2);background:#1a233680;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--muted);font-size:13px;line-height:1.6}.note b{color:var(--text)}.why{margin-top:18px;padding:13px 15px;border-left:3px solid var(--green);background:#34d3991a;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text);font-size:14px;line-height:1.65}.why b{color:var(--green)}.hint{display:inline-block;margin:0 0 14px;padding:8px 13px;background:#6c8cff1f;border:1px solid #6c8cff40;border-radius:999px;color:var(--text);font-size:13px;font-weight:600}.replay{color:var(--muted);font-weight:400}.legend{display:flex;gap:16px;flex-wrap:wrap;margin:0 0 16px;padding:10px 14px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm)}.legend-item{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--muted)}.legend-dot{width:11px;height:11px;border-radius:3px;flex:none;box-shadow:0 0 8px currentColor}.player{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:4px 0 20px}.btn{display:inline-flex;align-items:center;gap:6px;background:var(--card-2);border:1px solid var(--border-2);color:var(--text);padding:9px 16px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.btn:hover:not(:disabled){border-color:var(--blue)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn.primary{background:var(--blue);border-color:var(--blue);color:#0a0e17}.btn.primary:hover:not(:disabled){filter:brightness(1.08)}.progress{flex:1;min-width:120px;height:6px;background:var(--card-2);border-radius:999px;overflow:hidden;border:1px solid var(--border)}.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--purple));transition:width .25s ease}.speed{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:12px}.speed input{accent-color:var(--blue)}.speed-end{font-size:11px;color:var(--muted);white-space:nowrap}.statusline{font-size:14px;color:var(--muted);min-height:22px;margin:2px 0 14px;line-height:1.5}.statusline.ok{color:var(--green);font-weight:600}.statusline.bad{color:var(--red);font-weight:600}.tree{position:relative;display:flex;flex-direction:column-reverse;gap:30px;padding:10px 4px 4px;overflow-x:auto}.tree-edges{position:absolute;top:0;left:0;pointer-events:none;z-index:0}.tree-edge{fill:none;stroke:var(--border-2);stroke-width:2;opacity:.7;transition:stroke .25s,opacity .25s,stroke-width .25s}.tree-edge.active{stroke:var(--blue);stroke-width:3;opacity:1}.tree-level{position:relative;z-index:1;display:flex;justify-content:center;gap:14px}.node{position:relative;min-width:92px;background:var(--card-2);border:1.5px solid var(--border-2);border-radius:var(--radius-sm);padding:8px 10px;text-align:center;transition:all .25s}.node .kind{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.node .val{font-size:12px;color:var(--text);margin:2px 0;font-weight:600}.node .hash{font-family:var(--mono);font-size:11px;color:var(--muted);word-break:break-all}.node.dim{opacity:.28}.node.active{border-color:var(--blue);box-shadow:0 0 0 1px #6c8cff40,0 0 18px #6c8cff40}.node.active .hash{color:var(--blue)}.node.root{border-color:var(--green);box-shadow:0 0 0 1px #34d39938}.node.root .kind{color:var(--green)}.node.proof{border-color:var(--yellow);box-shadow:0 0 0 1px #fbbf2440,0 0 16px #fbbf2433}.node.proof .hash{color:var(--yellow)}.node.onpath{border-color:var(--blue)}.node.changed{border-color:var(--red);box-shadow:0 0 0 1px #f871711f,0 0 16px #f871711f}.node.changed .hash{color:var(--red)}.node.ok{border-color:var(--green);box-shadow:0 0 0 1px #34d39938,0 0 16px #34d3991f}.node.ok .hash{color:var(--green)}.node.clickable{cursor:pointer}.node.clickable:hover{border-color:var(--blue)}.chip{position:absolute;top:-9px;right:-9px;font-size:10px;font-weight:700;padding:2px 6px;border-radius:999px;background:var(--yellow);color:#0a0e17}.chip.you{background:var(--blue)}.leaf-editors{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.leaf-editor{display:flex;flex-direction:column;gap:4px}.leaf-editor label{font-size:11px;color:var(--muted)}.leaf-editor input{width:110px;background:var(--card-2);border:1px solid var(--border-2);color:var(--text);border-radius:var(--radius-sm);padding:8px 10px;font-size:13px;font-family:var(--mono)}.leaf-editor input:focus{outline:none;border-color:var(--blue)}.leaf-editor input.dirty{border-color:var(--yellow);background:#fbbf241a}.tamper-btn{width:110px;margin-top:4px;background:transparent;border:1px solid var(--border-2);color:var(--muted);border-radius:var(--radius-sm);padding:5px 8px;font-size:12px;font-weight:600;cursor:pointer;transition:all .15s}.tamper-btn:hover{border-color:var(--red);color:var(--text)}.tamper-btn.on{border-color:var(--yellow);color:var(--yellow);background:#fbbf241a}.roots{display:flex;gap:14px;flex-wrap:wrap;margin:16px 0 4px}.root-box{flex:1;min-width:220px;background:var(--card-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px}.root-box .label{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.root-box .val{font-family:var(--mono);font-size:12px;word-break:break-all;margin-top:4px}.root-box.changed{border-color:var(--red)}.root-box.changed .val{color:var(--red)}.root-box.ok{border-color:var(--green)}.hash-lab textarea{width:100%;min-height:64px;resize:vertical;background:var(--card-2);border:1px solid var(--border-2);color:var(--text);border-radius:var(--radius-sm);padding:12px 14px;font-size:15px;font-family:var(--sans)}.hash-lab textarea:focus{outline:none;border-color:var(--blue)}.hash-out{margin-top:14px;background:var(--card-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px}.hash-out .label{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:6px}.hash-hex{font-family:var(--mono);font-size:15px;line-height:1.7;word-break:break-all}.hash-hex .diff{color:var(--yellow);background:#fbbf241a;border-radius:3px}.hash-changed{margin-top:8px;font-size:12px;color:var(--yellow)}.field-label{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:6px}.count-toggle{display:inline-flex;gap:6px;margin-bottom:16px}.count-toggle button{background:var(--card-2);border:1px solid var(--border-2);color:var(--muted);border-radius:var(--radius-sm);padding:6px 14px;font-size:13px;font-weight:600;cursor:pointer}.count-toggle button.active{border-color:var(--blue);color:var(--text)}.author{margin-top:48px;padding-top:24px;border-top:1px solid var(--border);display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:center;text-align:left}.author-avatar{width:72px;height:72px;border-radius:50%;object-fit:cover;flex-shrink:0}.author-name{font-weight:700;font-size:16px;color:var(--text)}.author-roles{margin-top:2px;color:var(--muted);font-size:13px;line-height:1.5}.author-links{margin-top:8px;display:flex;gap:16px}.author-links a{color:var(--blue);text-decoration:none;font-size:13px;font-weight:600}.author-links a:hover{text-decoration:underline}.footer{margin-top:24px;text-align:center;color:var(--muted);font-size:12px}@media (max-width: 560px){.brand h1{font-size:24px}.node{min-width:72px;padding:6px 7px}.tree-level{gap:8px}}