:root{--bg:#fff;--fg:#1a1a1a;--muted:#666;--border:#d8d8e0;--accent:#5b3a8e;--error:#b00020;--ok:#117a3a;--field-bg:#fafafc;--card-bg:#f6f6f9;--maxw:64rem}*{box-sizing:border-box}html,body,#root{color:var(--fg);background:var(--bg);margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;font-size:16px;line-height:1.5}main{max-width:var(--maxw);margin:0 auto;padding:1rem}@media (width>=768px){main{padding:2rem}}h1{margin:0 0 1rem;font-size:1.5rem}h2{margin:1rem 0 .5rem;font-size:1.2rem}p{margin:0 0 .75rem}a{color:var(--accent);text-decoration:none}a:hover,a:focus{text-decoration:underline}button{font:inherit;border:1px solid var(--border);background:var(--field-bg);color:var(--fg);cursor:pointer;border-radius:6px;min-height:44px;padding:.75rem 1.25rem}button:hover:not(:disabled){background:#ececf5}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.primary:hover:not(:disabled){filter:brightness(1.1)}input,select{font:inherit;border:1px solid var(--border);background:var(--field-bg);border-radius:6px;width:100%;min-height:44px;padding:.6rem .75rem;font-size:16px}label{margin-bottom:.75rem;display:block}label>div:first-child{color:var(--muted);margin-bottom:.25rem;font-size:.9rem}fieldset{border:1px solid var(--border);border-radius:6px;margin:0 0 1rem;padding:.75rem}legend{color:var(--muted);padding:0 .5rem;font-size:.9rem}.app-header{border-bottom:1px solid var(--border);padding:1rem}.app-header strong{font-size:1.1rem}.app-nav{flex-wrap:wrap;gap:1rem;margin-top:.5rem;display:flex}.form-grid{gap:1rem;max-width:32rem;display:grid}.row-2{grid-template-columns:1fr;gap:.75rem;display:grid}@media (width>=480px){.row-2{grid-template-columns:1fr 1fr}}.error{color:var(--error);margin:.5rem 0;font-size:.9rem}.ok{color:var(--ok);margin:.5rem 0;font-size:.9rem}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:6px;margin:1rem 0;padding:.75rem 1rem}.chart-layout{flex-direction:column;gap:1.5rem;margin-top:1rem;display:flex}@media (width>=900px){.chart-layout{flex-direction:row;align-items:flex-start}}.chart-svg-wrap{width:100%;max-width:400px}.chart-svg-wrap svg{width:100%;height:auto;display:block}.table-wrap{-webkit-overflow-scrolling:touch;width:100%;overflow-x:auto}.chart-table{border-collapse:collapse;width:100%;min-width:36rem}.chart-table th,.chart-table td{border-bottom:1px solid var(--border);text-align:left;padding:.5rem .75rem;font-size:.95rem}.chart-table th{background:var(--field-bg);border-bottom-width:2px;font-weight:600}