:root{color-scheme:light;--ink:#151a23;--muted:#667085;--line:#e4e7ec;--soft:#f5f7fa;--accent:#1367d1;--accent-dark:#0d4fa8;--teal:#087f72;--warning:#9a5b13;--max:1100px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);text-rendering:optimizelegibility;background:#fff;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;line-height:1.7}a{color:var(--accent);text-underline-offset:3px}a:hover{color:var(--accent-dark)}img{max-width:100%;height:auto}button,input,select{font:inherit}.skip-link{z-index:100;color:#fff;background:var(--ink);border-radius:.5rem;padding:.65rem 1rem;position:fixed;top:-4rem;left:1rem}.skip-link:focus{top:1rem}.shell{width:min(calc(100% - 2rem), var(--max));margin-inline:auto}.site-header{z-index:20;backdrop-filter:blur(14px);background:#fffffff0;border-bottom:1px solid #e4e7ece6;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:1.5rem;min-height:68px;display:flex}.brand{color:var(--ink);align-items:center;gap:.75rem;text-decoration:none;display:flex}.brand-mark{color:#fff;background:var(--ink);letter-spacing:-.02em;border-radius:10px;place-items:center;width:38px;height:38px;font-size:.84rem;font-weight:800;display:grid}.brand strong,.brand small{display:block}.brand strong{font-size:.98rem;line-height:1.25}.brand small{color:var(--muted);margin-top:.1rem;font-size:.72rem}.site-nav{align-items:center;gap:.25rem;display:flex}.site-nav a{color:#475467;border-radius:.5rem;padding:.45rem .65rem;font-size:.9rem;text-decoration:none}.site-nav a:hover,.site-nav a.active{color:var(--ink);background:var(--soft)}.hero{background:radial-gradient(circle at 80% 8%,#1367d11a,#0000 30%),linear-gradient(#fbfcfe 0%,#fff 100%);padding:5rem 0 3.5rem}.eyebrow{color:var(--accent);letter-spacing:.11em;text-transform:uppercase;margin:0 0 .85rem;font-size:.78rem;font-weight:800}.hero h1{letter-spacing:-.055em;max-width:800px;margin:0;font-size:clamp(2.25rem,6vw,4.7rem);line-height:1.06}.hero-copy{color:#475467;max-width:700px;margin:1.2rem 0 0;font-size:1.08rem}.hero-actions{flex-wrap:wrap;gap:.75rem;margin-top:1.75rem;display:flex}.button{border:1px solid var(--ink);color:#fff;background:var(--ink);border-radius:.65rem;justify-content:center;align-items:center;min-height:44px;padding:.65rem 1rem;font-weight:700;text-decoration:none;display:inline-flex}.button:hover{color:#fff;background:#303744}.button.secondary{color:var(--ink);border-color:var(--line);background:#fff}.button.secondary:hover{background:var(--soft)}.metric-strip{border:1px solid var(--line);background:var(--line);border-radius:.8rem;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:3rem;display:grid;overflow:hidden}.metric{background:#fff;padding:1rem 1.1rem}.metric strong{letter-spacing:-.03em;font-size:1.35rem;display:block}.metric span{color:var(--muted);font-size:.8rem}.section{padding:4rem 0}.section.soft{background:var(--soft)}.section-heading{justify-content:space-between;align-items:end;gap:1rem;margin-bottom:1.5rem;display:flex}.section-heading h2{letter-spacing:-.035em;margin:0;font-size:clamp(1.55rem,4vw,2.35rem)}.section-heading p{max-width:580px;color:var(--muted);margin:.4rem 0 0}.card-grid{grid-template-columns:repeat(3,1fr);gap:1rem;display:grid}.card{border:1px solid var(--line);background:#fff;border-radius:.85rem;flex-direction:column;min-height:100%;padding:1.25rem;display:flex;box-shadow:0 8px 28px #10182809}.card .label{color:var(--teal);background:#ecfdf7;border-radius:999px;align-self:flex-start;margin-bottom:.8rem;padding:.18rem .48rem;font-size:.73rem;font-weight:800}.card h3{margin:0;font-size:1.08rem;line-height:1.42}.card h3 a{color:var(--ink);text-decoration:none}.card h3 a:hover{color:var(--accent)}.card p{color:var(--muted);margin:.65rem 0 1rem;font-size:.9rem}.card .meta{color:#98a2b3;margin-top:auto;font-size:.76rem}.data-table-wrap{border:1px solid var(--line);background:#fff;border-radius:.75rem;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;min-width:720px;font-size:.9rem}.data-table th,.data-table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:.8rem .9rem}.data-table th{color:#475467;background:var(--soft);letter-spacing:.03em;text-transform:uppercase;font-size:.76rem}.data-table tr:last-child td{border-bottom:0}.status{color:#067647;white-space:nowrap;background:#ecfdf3;border-radius:999px;padding:.1rem .45rem;font-size:.74rem;font-weight:800;display:inline-block}.page-shell{width:min(100% - 2rem,900px);margin-inline:auto;padding:3.5rem 0 5rem}.page-header{margin-bottom:2rem}.page-header h1{letter-spacing:-.045em;margin:0;font-size:clamp(2rem,6vw,3.5rem);line-height:1.12}.page-header .lead{max-width:760px;color:var(--muted);margin:1rem 0 0;font-size:1.05rem}.breadcrumbs{color:var(--muted);margin:0 0 1.25rem;font-size:.82rem}.breadcrumbs a{color:var(--muted)}.article-meta{color:var(--muted);flex-wrap:wrap;gap:.55rem;margin-top:1.25rem;font-size:.82rem;display:flex}.article-meta span{border:1px solid var(--line);background:#fff;border-radius:999px;padding:.2rem .55rem}.evidence-box,.notice{border:1px solid #b8d7ff;border-left:4px solid var(--accent);background:#f5f9ff;border-radius:.65rem;margin:1.5rem 0;padding:1rem 1.1rem}.notice.warning{border-color:#f1d5a8;border-left-color:var(--warning);background:#fffaf0}.evidence-box strong,.notice strong{margin-bottom:.2rem;display:block}.evidence-box p,.notice p{color:#475467;margin:0;font-size:.88rem}.prose{overflow-wrap:anywhere;font-size:1rem}.prose h2{border-bottom:1px solid var(--line);letter-spacing:-.02em;margin:2.4rem 0 .8rem;padding-bottom:.35rem;font-size:1.45rem;line-height:1.35}.prose h3{margin:1.7rem 0 .55rem;font-size:1.13rem}.prose p{margin:.85rem 0}.prose ul,.prose ol{padding-left:1.4rem}.prose li{margin:.35rem 0}.prose blockquote{color:#475467;background:var(--soft);border-left:3px solid #98a2b3;margin:1.25rem 0;padding:.75rem 1rem}.prose code{background:#f2f4f7;border-radius:.25rem;padding:.12rem .34rem;font-size:.9em}.prose pre{background:#f2f4f7;border-radius:.65rem;padding:1rem;overflow-x:auto}.prose pre code{background:0 0;padding:0}.prose img{object-fit:contain;border:1px solid var(--line);background:#fff;border-radius:.75rem;max-height:560px;margin:1.4rem auto;display:block}.prose table{border-collapse:collapse;width:max-content;min-width:100%;max-width:100%;font-size:.88rem;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);text-align:left;white-space:nowrap;padding:.55rem .7rem}.prose th{background:var(--soft)}.article-end{border-top:1px solid var(--line);margin-top:3rem;padding-top:1.5rem}.related-grid{grid-template-columns:repeat(2,1fr);gap:.75rem;display:grid}.related-link{border:1px solid var(--line);color:var(--ink);border-radius:.6rem;padding:.9rem;text-decoration:none}.related-link:hover{color:var(--accent);background:var(--soft)}.related-link small{color:var(--muted);margin-top:.25rem;display:block}.tool-panel{border:1px solid var(--line);background:var(--soft);border-radius:.85rem;padding:1.25rem}.tool-options{grid-template-columns:repeat(2,1fr);gap:.75rem;display:grid}.tool-option{border:1px solid var(--line);text-align:left;color:var(--ink);cursor:pointer;background:#fff;border-radius:.65rem;padding:1rem}.tool-option:hover,.tool-option[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 3px #1367d11a}.tool-option strong,.tool-option small{display:block}.tool-option small{color:var(--muted);margin-top:.25rem}.tool-result{background:#fff;border-radius:.65rem;margin-top:1rem;padding:1rem}.site-footer{color:#cbd5e1;background:#111827;padding:2.5rem 0}.footer-inner{justify-content:space-between;gap:2rem;display:flex}.site-footer strong{color:#fff}.site-footer p{margin:.3rem 0 0;font-size:.84rem}.site-footer nav{flex-wrap:wrap;place-content:start flex-end;gap:.8rem 1rem;display:flex}.site-footer a{color:#cbd5e1;font-size:.85rem;text-decoration:none}.site-footer a:hover{color:#fff}@media (width<=800px){.header-inner{flex-direction:column;align-items:flex-start;gap:.6rem;padding:.75rem 0}.site-header{position:static}.site-nav{width:100%;overflow-x:auto}.site-nav a{white-space:nowrap}.hero{padding:3.2rem 0 2.5rem}.metric-strip{grid-template-columns:repeat(2,1fr)}.card-grid,.tool-options,.related-grid{grid-template-columns:1fr}.footer-inner{flex-direction:column}.site-footer nav{justify-content:flex-start}}@media (width<=480px){.shell,.page-shell{width:min(calc(100% - 1.25rem), var(--max))}.brand small{display:none}.metric-strip{grid-template-columns:1fr 1fr}.section{padding:3rem 0}}