:root{--bg:#f6f4ee;--card:#fffdf8;--ink:#1f2c3d;--muted:#647083;--line:#c9d2df;--blue:#24486a;--red:#a4493e;--hot:#1565c0}
*{box-sizing:border-box} body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.5}
main{max-width:1180px;margin:auto;padding:22px} h1{font-size:clamp(24px,4vw,38px);margin:0 0 8px} .sub{color:var(--muted);margin:0 0 16px}
.notice{background:#fff7e6;border:1px solid #ead7aa;border-radius:12px;padding:10px 12px;margin:12px 0;color:#684b18}
.grid{display:grid;grid-template-columns:1.05fr 1.45fr;gap:16px}.card{background:var(--card);border:1.5px solid var(--blue);border-radius:16px;padding:14px;box-shadow:0 8px 24px #20304012}
h2{font-size:17px;margin:0 0 10px} h3{font-size:14px;margin:12px 0 6px}.inputs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.matrixBox{margin:8px 0}.matrixName{font-weight:700;font-size:13px;color:var(--blue);margin-bottom:4px}
.grid3{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
input{width:100%;min-width:0;padding:7px 6px;border:1px solid var(--line);border-radius:8px;font:inherit;text-align:center;background:#fff}input:focus{outline:2px solid #7fb1e6;border-color:#3c78ad}
.bad{border-color:#c0392b;background:#fff3f1}
table{border-collapse:separate;border-spacing:4px;width:max-content;max-width:100%}th{font-size:12px;color:var(--muted);font-weight:600;padding:2px 6px}td{min-width:58px;text-align:center;padding:8px 8px;border-radius:9px;border:1px solid var(--line);background:#fff;font-variant-numeric:tabular-nums}
td.head{background:#eef4fb;font-weight:700;border-color:#bfd0e2;cursor:pointer}td.head.sel{background:#d8e8fb;box-shadow:inset 0 0 0 2px #5b91c3}
.heat{position:relative;color:#17304a;font-weight:650}.heat::after{content:"";position:absolute;inset:0;border-radius:9px;background:var(--hot);opacity:var(--o);z-index:-1}.heat{z-index:0}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:10px 0 12px}button{border:0;border-radius:10px;padding:9px 14px;background:var(--blue);color:white;font:inherit;cursor:pointer}button.secondary{background:#6c7a8d}
.switch{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 12px;cursor:pointer;user-select:none}.steps{display:grid;gap:8px}.step{border-left:4px solid #9bb8d6;background:#f7fafd;padding:8px 10px;border-radius:8px;font-size:14px}
.detail{background:#f8fafc;border:1px solid #d7e0ea;border-radius:12px;padding:10px;margin-top:12px;font-size:14px}.formula{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:#f0f3f7;border-radius:7px;padding:2px 5px}
.scroll{overflow:auto;padding:2px}.err{color:#b42318;font-size:13px;margin-top:6px;white-space:pre-wrap}.pill{display:inline-block;background:#edf3f9;border:1px solid #cbd8e5;border-radius:999px;padding:2px 9px;margin:2px;font-size:12px;color:#31475f}
@media(max-width:850px){main{padding:14px}.grid,.inputs{grid-template-columns:1fr}.card{padding:12px}td{min-width:48px;padding:7px 5px}}

.site-nav{display:flex;flex-wrap:wrap;gap:20px;margin:0 0 24px;font-size:14px}.site-nav a{color:var(--blue);text-decoration:none}.site-nav a:hover{text-decoration:underline}.site-nav a:focus-visible{outline:2px solid var(--blue);outline-offset:4px}

.lab-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 28px}.lab-tabs a{padding:9px 16px;border:1px solid var(--line);border-radius:999px;text-decoration:none;color:var(--blue);background:#fff}.lab-tabs a[aria-current]{background:var(--blue);color:#fff}.fields{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}label{font-size:13px;color:var(--muted)}.lab-chart{width:100%;height:auto;display:block;margin:16px 0}.legend{display:flex;gap:20px;flex-wrap:wrap;font-size:13px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}.stats div{background:#eef3f8;padding:12px;border-radius:8px}.stats strong{display:block;font-size:21px;color:var(--blue)}.card+.card-section{margin-top:16px}.hint{font-size:13px;color:var(--muted)}input[type=range]{padding:0;margin:18px 0;accent-color:var(--blue)}button:focus-visible,a:focus-visible{outline:2px solid var(--blue);outline-offset:4px}.lab-error{min-height:22px;color:#b42318}.parameter-title{margin-top:20px} @media(max-width:480px){.stats{grid-template-columns:1fr}.fields{gap:6px}.lab-tabs a{font-size:13px;padding:8px 11px}}