:root{--paper: #f6f3ec;--paper-2: #efeadf;--ink: #1d2a24;--ink-2: #4b5a52;--ink-3: #7a877f;--line: #d9d2c3;--forest: #1f4d3a;--forest-2: #2f6b4f;--moss: #7f9c5a;--water: #2d7fb0;--water-2: #8fc9e8;--sky: #b9c8d2;--sand: #c9a86a;--rust: #b5512f;--amber: #c98a1b;--card: #fffdf8;--shadow: 0 1px 2px rgba(30, 40, 35, .06), 0 12px 32px -16px rgba(30, 40, 35, .25);--radius: 14px;--serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", Georgia, serif;--sans: "Inter", "Segoe UI", "Helvetica Neue", "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", system-ui, sans-serif;--mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;color-scheme:light}:root[data-theme=dark]{--paper: #111a16;--paper-2: #16221c;--ink: #e8e4d8;--ink-2: #b5b3a6;--ink-3: #85897f;--line: #2b3a32;--forest: #7fbf9a;--forest-2: #5c9f7b;--moss: #9fb97a;--water: #6db5e2;--water-2: #2d7fb0;--sky: #3a4b56;--sand: #d4b47c;--rust: #e07a55;--amber: #e2a83a;--card: #18241e;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px -16px rgba(0, 0, 0, .6);color-scheme:dark}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--paper: #111a16;--paper-2: #16221c;--ink: #e8e4d8;--ink-2: #b5b3a6;--ink-3: #85897f;--line: #2b3a32;--forest: #7fbf9a;--forest-2: #5c9f7b;--moss: #9fb97a;--water: #6db5e2;--water-2: #2d7fb0;--sky: #3a4b56;--sand: #d4b47c;--rust: #e07a55;--amber: #e2a83a;--card: #18241e;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px -16px rgba(0, 0, 0, .6);color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55}h1,h2,h3,.serif{font-family:var(--serif);font-weight:500;letter-spacing:-.01em}h1{font-size:1.75rem;margin:0;line-height:1.2}h2{font-size:1.35rem;margin:0 0 .5rem}h3{font-size:1.1rem;margin:1.25rem 0 .4rem}p{margin:0 0 .75rem}a{color:var(--water)}button{font:inherit}code,.mono{font-family:var(--mono);font-size:.9em}.muted{color:var(--ink-2)}.small{font-size:.875rem}.tiny{font-size:.78rem;color:var(--ink-3)}.shell{max-width:1180px;margin:0 auto;padding:0 16px 48px}header.top{display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between;padding:18px 0 10px}.brand{display:flex;align-items:center;gap:12px}.brand .mark{width:38px;height:38px;border-radius:50%;background:radial-gradient(circle at 35% 30%,var(--water-2),var(--forest) 70%);box-shadow:var(--shadow);flex:none}.brand .sub{font-size:.8rem;color:var(--ink-2);max-width:46ch}nav.main{display:flex;gap:6px;flex-wrap:wrap}.navbtn{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:7px 13px;border-radius:999px;cursor:pointer;font-size:.9rem}.navbtn[aria-current=page]{background:var(--forest);color:var(--paper);border-color:var(--forest)}.banner{background:var(--paper-2);border:1px dashed var(--line);border-radius:var(--radius);padding:10px 14px;font-size:.85rem;color:var(--ink-2);margin:6px 0 18px}.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}@media (min-width: 900px){.layout{grid-template-columns:minmax(0,7fr) minmax(300px,5fr);align-items:start}.sticky{position:sticky;top:16px}}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.card+.card{margin-top:16px}.stepper{display:flex;gap:6px;margin-bottom:18px;flex-wrap:wrap}.stepper button{flex:1 1 100px;border:1px solid var(--line);background:transparent;color:var(--ink-2);padding:8px 6px;border-radius:10px;cursor:pointer;font-size:.85rem;display:flex;gap:8px;align-items:center;justify-content:center}.stepper button[aria-current=step]{background:var(--forest);color:var(--paper);border-color:var(--forest)}.stepper .n{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--paper-2);color:var(--ink);font-size:.75rem}.stepper button[aria-current=step] .n{background:#fff3;color:inherit}.field{display:grid;gap:6px;padding:12px 0;border-bottom:1px solid var(--line)}.field:last-child{border-bottom:0}.field label.lbl{font-weight:600;font-size:.95rem}.field .help{font-size:.82rem;color:var(--ink-2)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}input[type=number],input[type=text],select{font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:8px 10px;min-width:0}input[type=number]{width:130px}select{max-width:100%}input:focus,select:focus,button:focus-visible{outline:2px solid var(--water);outline-offset:2px}.unit{color:var(--ink-3);font-size:.85rem}.seg{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}.seg button{border:0;background:transparent;color:var(--ink-2);padding:5px 10px;cursor:pointer;font-size:.78rem}.seg button[aria-pressed=true]{background:var(--paper-2);color:var(--ink);font-weight:600}.seg.conf button[aria-pressed=true][data-v=measured]{color:var(--forest-2)}.seg.conf button[aria-pressed=true][data-v=estimated]{color:var(--amber)}.seg.conf button[aria-pressed=true][data-v=default]{color:var(--rust)}.choice{display:grid;gap:8px}.choice label{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:10px 12px;cursor:pointer;background:var(--paper)}.choice label:has(input:checked){border-color:var(--forest-2);background:color-mix(in srgb,var(--forest-2) 8%,var(--card))}.choice input{margin-top:4px}.choice .t{font-weight:600;font-size:.95rem}.choice .d{font-size:.82rem;color:var(--ink-2)}.actions{display:flex;justify-content:space-between;gap:10px;margin-top:18px}.btn{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:9px 16px;border-radius:10px;cursor:pointer}.btn.primary{background:var(--forest);color:var(--paper);border-color:var(--forest)}.btn.ghost{background:transparent}table.months{width:100%;border-collapse:collapse;font-size:.85rem}table.months th,table.months td{padding:4px 6px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}table.months th:first-child,table.months td:first-child{text-align:left}table.months input{width:80px;padding:4px 6px;text-align:right}.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.flow svg{width:100%;height:auto;display:block}.flow .lbl{font-size:11px;fill:var(--ink-2);font-family:var(--sans)}.flow .val{font-size:13px;fill:var(--ink);font-family:var(--serif)}.flow .stream{fill:none;stroke-linecap:round;stroke-dasharray:6 10;animation:flow 1.6s linear infinite;opacity:.9}.flow .base{fill:none;stroke-linecap:round;opacity:.22}.flow .drop{animation:rain 1.3s linear infinite}@keyframes flow{to{stroke-dashoffset:-32}}@keyframes rain{0%{transform:translateY(-8px);opacity:0}20%{opacity:1}to{transform:translateY(26px);opacity:0}}@media (prefers-reduced-motion: reduce){.flow .stream,.flow .drop{animation:none}}.legend{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 14px;font-size:.82rem;margin-top:8px}.legend .sw{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:middle}.big{font-family:var(--serif);font-size:3rem;line-height:1;letter-spacing:-.02em;color:var(--forest)}.big small{font-size:1rem;color:var(--ink-2);font-family:var(--sans);letter-spacing:0}.interval{margin:10px 0 4px}.interval svg{width:100%;height:auto;display:block}.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.75rem;border:1px solid var(--line);color:var(--ink-2);background:var(--paper-2)}.pill.ok{color:var(--forest-2);border-color:color-mix(in srgb,var(--forest-2) 40%,var(--line))}.pill.warn{color:var(--rust);border-color:color-mix(in srgb,var(--rust) 40%,var(--line))}.omit{margin:0;padding-left:1.2rem}.omit li{margin:4px 0;font-size:.9rem}.warn-list{display:grid;gap:8px}.warn{border-left:3px solid var(--amber);background:color-mix(in srgb,var(--amber) 9%,var(--card));padding:8px 12px;border-radius:0 8px 8px 0;font-size:.88rem}.basis{border-left:3px solid var(--water);background:color-mix(in srgb,var(--water) 8%,var(--card));padding:10px 12px;border-radius:0 8px 8px 0;font-size:.9rem}.compare{display:grid;gap:10px}.bar{display:flex;height:26px;border-radius:7px;overflow:hidden;background:var(--paper-2)}.bar span{display:block;height:100%;min-width:0;transition:width .4s ease}.compare .cap{display:flex;justify-content:space-between;font-size:.82rem;color:var(--ink-2)}textarea.disc{width:100%;min-height:240px;font:.85rem/1.45 var(--mono);color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:10px;resize:vertical}.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.kv{display:grid;grid-template-columns:1fr auto;gap:4px 12px;font-size:.9rem}.kv dt{color:var(--ink-2)}.kv dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}.kv dd.mono{font-family:var(--mono);font-size:.8rem}.eq{font-family:var(--mono);font-size:.85rem;background:var(--paper-2);padding:8px 10px;border-radius:8px;overflow-x:auto;white-space:pre}table.coef{width:100%;border-collapse:collapse;font-size:.85rem}table.coef th,table.coef td{padding:5px 6px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}table.coef td.num{font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}.finding{margin:6px 0;padding-left:1rem;border-left:2px solid var(--sand);font-size:.9rem}@media print{body{background:#fff;color:#000}.no-print,header.top,.stepper,.actions,nav.main,.banner{display:none!important}.layout{display:block}.card{box-shadow:none;border-color:#bbb;page-break-inside:avoid}textarea.disc{min-height:0;height:auto;border:1px solid #bbb}}