:root{--bg: #faf8f4;--panel: #fffdfa;--ink: #1a1714;--muted: #7a6e63;--line: #e6ded2;--amber: #b06a16;--accent: #2a8f8f}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Space Grotesk,system-ui,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased}.app{max-width:1180px;margin:0 auto;padding:0 22px 70px}.back-link{display:inline-block;margin:22px 0 0;font-family:JetBrains Mono,monospace;font-size:12.5px;color:var(--muted);text-decoration:none}.back-link:hover{color:var(--amber)}.hero{padding:26px 0 22px;max-width:770px}.eyebrow{font-family:JetBrains Mono,monospace;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--amber);margin:0 0 12px}h1{font-size:clamp(30px,4.5vw,46px);line-height:1.05;margin:0 0 14px;letter-spacing:-.02em}.lede{font-size:17.5px;color:#443e38;margin:0}.lede em{font-style:italic;color:var(--ink)}.grid{display:grid;grid-template-columns:320px 1fr;gap:22px;align-items:start}.board{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden}.board-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px 12px;border-bottom:1px solid var(--line)}.board-head h2{font-size:15.5px;margin:0}.sort-toggle,.mode-toggle{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden}.sort-toggle button,.mode-toggle button{font:inherit;font-size:12px;padding:5px 10px;border:0;background:var(--bg);color:var(--muted);cursor:pointer}.sort-toggle button.on,.mode-toggle button.on{background:var(--amber);color:#fff}.board-search{padding:10px 14px;border-bottom:1px solid var(--line)}.board-search input{width:100%;font:inherit;font-size:13.5px;padding:8px 12px;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--ink)}.board-search input:focus{outline:none;border-color:var(--amber)}.board-list{max-height:720px;overflow-y:auto}.row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:8px 16px;cursor:pointer;border-bottom:1px solid #f1eadf;position:relative}.row:hover,.row.hov{background:#f7f1e8}.row.sel{background:#b06a161a}.row.sel:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--amber)}.row .nm{font-size:14px;font-weight:500}.row .bar-wrap{display:flex;align-items:center;gap:8px}.row .bar{height:7px;border-radius:4px;background:var(--accent);opacity:.85}.row .bval{font-family:JetBrains Mono,monospace;font-size:11.5px;color:#443e38;min-width:40px;text-align:right}.detail{display:flex;flex-direction:column;gap:16px}.controls{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.mode-hint{font-size:13.5px;color:var(--muted);margin:0}.mode-hint b{color:var(--amber)}.sankey-wrap{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:14px 16px}.sankey{display:block;width:100%;height:auto}.sankey-empty{padding:40px;text-align:center;color:var(--muted)}.sk-label{font-size:9px;fill:#443e38;font-family:Space Grotesk,sans-serif;pointer-events:none}.sk-label.src{font-size:9.5px;font-weight:500}.nat-detail{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px 20px 18px}.nd-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px;margin-bottom:14px}.nd-head h3{font-size:18px;margin:0}.nd-stats{display:flex;gap:16px;font-size:13px;color:var(--muted)}.nd-stats b{color:var(--ink);font-size:15px}.nd-bars{display:flex;flex-direction:column;gap:7px}.nd-bar{display:grid;grid-template-columns:170px 1fr 28px;gap:10px;align-items:center;font-size:12.5px}.ndl{color:#443e38;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ndl em{color:var(--amber);font-style:normal;font-family:JetBrains Mono,monospace;font-size:10.5px}.ndt{background:#f1eadf;border-radius:4px;height:11px;overflow:hidden}.ndt span{display:block;height:100%;border-radius:4px}.ndv{font-family:JetBrains Mono,monospace;font-size:12px;color:var(--muted);text-align:right}.method{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px 24px;margin-top:24px}.method h2{font-size:19px;margin:0 0 8px;letter-spacing:-.01em}.method p{font-size:14.5px;color:#443e38;margin:0;max-width:880px}.method code,footer code{font-family:JetBrains Mono,monospace;font-size:12.5px;color:var(--amber)}.method b{color:var(--ink)}footer{border-top:1px solid var(--line);margin-top:26px;padding-top:18px;color:var(--muted);font-size:13px}@media (max-width: 900px){.grid{grid-template-columns:1fr}.board-list{max-height:360px}}