:root{
  --ink:#111827;--muted:#5b6472;--line:#d8dde6;--panel:#f8fafc;--panel2:#f3f4f6;
  --purple:#4d1979;--purple2:#6b2fa0;--blue:#2563eb;--orange:#ea580c;--green:#138a4b;--red:#b91c1c;
  --white:#ffffff;--shadow:0 8px 24px rgba(17,24,39,.08);--radius:16px;
}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#eef2f7;line-height:1.45}
header{background:linear-gradient(135deg,#321052,#4d1979 60%,#6b2fa0);color:white;padding:28px 22px 24px;box-shadow:var(--shadow)}
.header-inner{max-width:1240px;margin:0 auto}h1{margin:0 0 8px;font-size:30px;letter-spacing:.2px}header p{margin:5px 0;color:#efe8f7}.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.badge{display:inline-flex;align-items:center;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:6px 10px;background:rgba(255,255,255,.12);font-size:13px}
main{max-width:1240px;margin:22px auto;padding:0 18px 40px}.grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.card h2{margin:0 0 12px;font-size:20px}.card h3{margin:20px 0 9px;font-size:16px}.small{font-size:13px;color:var(--muted)}.mono{font-family:"Courier New",Consolas,monospace}.upload-row{display:grid;grid-template-columns:1fr;gap:8px;padding:12px 0;border-bottom:1px dashed var(--line)}.upload-row:last-child{border-bottom:0}.upload-row label{font-weight:700}.filehelp{font-size:13px;color:var(--muted)}input[type=file],select,input[type=number]{width:100%;padding:9px;border:1px solid var(--line);border-radius:10px;background:#fff}.controls{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}button,.download-link{appearance:none;border:0;border-radius:12px;padding:10px 13px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:7px}button.primary{background:var(--purple);color:white}button.secondary{background:#e8def2;color:#351150}button.light{background:#f3f4f6;color:#111827;border:1px solid var(--line)}button.warn{background:#fee2e2;color:#7f1d1d}button:disabled{opacity:.45;cursor:not-allowed}.status{padding:10px 12px;border-radius:12px;margin-top:12px;font-size:14px}.status.info{background:#eef2ff;color:#1e3a8a}.status.ok{background:#ecfdf5;color:#065f46}.status.warn{background:#fff7ed;color:#9a3412}.status.err{background:#fef2f2;color:#991b1b}.tabs{display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--line);margin-bottom:12px}.tab{padding:9px 12px;border:1px solid var(--line);border-bottom:0;border-radius:10px 10px 0 0;background:#f8fafc;color:#374151;cursor:pointer;font-weight:700}.tab.active{background:white;color:var(--purple);border-color:var(--purple)}.tab-panel{display:none}.tab-panel.active{display:block}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:12px;max-height:520px;background:white}table{border-collapse:collapse;width:100%;font-size:13px}th,td{border-bottom:1px solid #edf0f4;padding:7px 8px;text-align:left;vertical-align:top}th{position:sticky;top:0;background:#f8fafc;z-index:1;font-weight:700}tr:hover td{background:#fbfdff}.summary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:12px 0}.metric{border:1px solid var(--line);border-radius:12px;background:#fbfdff;padding:11px}.metric .label{font-size:12px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.3px}.metric .value{font-size:20px;font-weight:800;margin-top:2px}.svg-box{width:100%;overflow:auto;border:1px solid var(--line);border-radius:12px;background:white;padding:10px}.footer{max-width:1240px;margin:0 auto 30px;padding:0 18px;color:#64748b;font-size:13px}.footnote{font-size:12px;color:var(--muted);margin-top:10px}.pill{display:inline-block;border-radius:999px;padding:3px 8px;font-size:12px;font-weight:700}.pill.ok{background:#dcfce7;color:#166534}.pill.na{background:#f3f4f6;color:#374151}.pill.warn{background:#ffedd5;color:#9a3412}.hidden{display:none!important}.toc{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.toc a{display:block;padding:10px;border:1px solid var(--line);border-radius:12px;background:#fbfdff;color:#2f1551;text-decoration:none;font-weight:700}.code{background:#0f172a;color:#e5e7eb;border-radius:12px;padding:12px;overflow:auto;font-size:12px}.formula{font-family:Georgia,serif;background:#f8fafc;border-left:4px solid var(--purple);padding:10px 12px;border-radius:8px;margin:10px 0}.notice{background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12;border-radius:12px;padding:12px;margin:12px 0}.checklist li{margin:7px 0}@media(max-width:960px){.grid{grid-template-columns:1fr}.summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.toc{grid-template-columns:1fr}header h1{font-size:24px}}

.authorline{margin-top:10px;color:#f7f3fb;font-size:14px}
.python-card{margin-top:12px;padding:12px;border:1px solid #d7c8e8;border-radius:14px;background:#fbf7ff;display:flex;align-items:center;justify-content:space-between;gap:12px}
.python-card p{margin:4px 0 0;color:#5b6472;font-size:13px}
.download-link.python{background:#4d1979;color:#fff;white-space:nowrap}
.download-link.python:hover{background:#6b2fa0}
@media(max-width:720px){.python-card{flex-direction:column;align-items:flex-start}.download-link.python{width:100%;justify-content:center}}


.refs-details{margin-top:14px;border:1px solid var(--line);border-radius:14px;background:#fbfdff;padding:10px 12px}
.refs-details summary{font-weight:800;color:var(--purple);cursor:pointer;outline:none}
.refs-details summary::-webkit-details-marker{color:var(--purple)}
.refs-details p{margin:9px 0 8px;color:#374151;font-size:13px}
.refs-list{margin:8px 0 0 20px;padding:0;font-size:12.5px;color:#374151;line-height:1.35}
.refs-list li{margin:6px 0}
.header-note{font-size:13px;color:#efe8f7;margin-top:8px}

.header-link{color:#ffffff;text-decoration:underline;text-underline-offset:2px;font-weight:700}
.badge .math-var{display:inline-block;margin-right:0.28em}