:root{--ink:#152232;--ink2:#33445a;--mute:#657a93;--line:#dce4ec;--paper:#fff;--sky:#f2f6fa;--blue:#1a5a9e;--blue-d:#134577;--blue-l:#e7f0f9;--sans:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;--maxw:1080px;--readw:760px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{font-family:var(--sans);color:var(--ink2);background:var(--paper);-webkit-font-smoothing:antialiased;font-size:18px;line-height:1.65}a{color:var(--blue)}a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:2px}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}.read{max-width:var(--readw);margin:0 auto;padding:0 22px}nav{border-bottom:1px solid var(--line);background:var(--paper);z-index:40;position:sticky;top:0}.nav-in{justify-content:space-between;align-items:center;gap:16px;height:70px;display:flex}.brand{color:var(--ink);letter-spacing:-.01em;align-items:center;gap:10px;font-size:17px;font-weight:700;text-decoration:none;display:flex}.brand svg{color:var(--blue);flex:none}.nav-links{align-items:center;gap:22px;display:flex}.nav-links a{color:var(--ink2);font-size:15px;font-weight:500;text-decoration:none}.nav-links a:hover{color:var(--blue)}.btn{border:2px solid #0000;border-radius:6px;padding:13px 24px;font-size:16px;font-weight:600;text-decoration:none;transition:background .15s,color .15s;display:inline-block}.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:var(--blue-d)}.btn-out{border-color:var(--blue);color:var(--blue);background:0 0}.btn-out:hover{background:var(--blue-l)}.btn-sm{padding:9px 16px;font-size:14.5px}@media (width<=860px){.nav-links a:not(.btn){display:none}}h1{color:var(--ink);letter-spacing:-.02em;font-size:clamp(30px,4.4vw,46px);font-weight:700;line-height:1.18}h2{color:var(--ink);letter-spacing:-.01em;margin:44px 0 14px;font-size:clamp(23px,2.6vw,30px);font-weight:700;line-height:1.25}h3{color:var(--ink);margin:28px 0 8px;font-size:20px;font-weight:600}p{margin-bottom:16px}ul,ol{margin:0 0 18px 24px}li{margin-bottom:9px}strong{color:var(--ink);font-weight:600}.hero{background:var(--sky);border-bottom:1px solid var(--line);padding:70px 0 62px}.eyebrow{background:var(--blue-l);color:var(--blue-d);border-radius:4px;margin-bottom:18px;padding:6px 12px;font-size:13.5px;font-weight:600;display:inline-block}.lead{color:var(--ink2);max-width:720px;margin-top:18px;font-size:20px}.hero-btns{flex-wrap:wrap;gap:12px;margin-top:30px;display:flex}section{padding:58px 0}.sec-lead{color:var(--mute);max-width:720px;margin-bottom:8px;font-size:18px}.grid2{grid-template-columns:1fr 1fr;gap:20px;display:grid}.grid3{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}@media (width<=820px){.grid2,.grid3{grid-template-columns:1fr}}.box{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:26px 24px}.box h3{margin-top:0}.box p{margin-bottom:0;font-size:16px}.box .n{background:var(--blue-l);width:34px;height:34px;color:var(--blue-d);border-radius:6px;justify-content:center;align-items:center;margin-bottom:14px;font-size:16px;font-weight:700;display:inline-flex}.note{background:var(--sky);border-left:4px solid var(--blue);border-radius:0 8px 8px 0;margin:26px 0;padding:22px 24px}.note p:last-child{margin-bottom:0}.note strong{color:var(--ink)}table{border-collapse:collapse;width:100%;margin:22px 0;font-size:16px}th,td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:13px 14px}th{background:var(--sky);color:var(--ink);font-size:15px;font-weight:600}td strong{color:var(--ink)}.cta{background:var(--ink);color:#c7d5e4;padding:64px 0}.cta h2{color:#fff;margin-top:0}.cta p{max-width:640px}.cta .btn-blue{color:var(--ink);background:#fff}.cta .btn-blue:hover{background:#e7f0f9}.cta a.plain{color:#9dbbda}.glist{gap:16px;display:grid}.gitem{border:1px solid var(--line);border-radius:8px;padding:22px 24px;text-decoration:none;transition:border-color .15s,background .15s;display:block}.gitem:hover{border-color:var(--blue);background:var(--sky)}.gitem .t{color:var(--ink);margin-bottom:6px;font-size:19px;font-weight:700;display:block}.gitem .d{color:var(--mute);font-size:16px}.art{padding:46px 0 20px}.art .meta{color:var(--mute);margin-bottom:14px;font-size:15px}.art h2:first-of-type{margin-top:34px}.toc{background:var(--sky);border-radius:8px;margin:30px 0;padding:22px 24px}.toc p{color:var(--ink);margin-bottom:10px;font-size:16px;font-weight:600}.toc ol{margin-bottom:0}.toc li{font-size:16px}details{border:1px solid var(--line);border-radius:8px;margin-bottom:10px;padding:16px 20px}details summary{cursor:pointer;color:var(--ink);font-size:17px;font-weight:600}details p{margin:12px 0 0;font-size:16px}footer{border-top:1px solid var(--line);color:var(--mute);padding:40px 0;font-size:15px}footer a{color:var(--blue)}.f-cols{flex-wrap:wrap;justify-content:space-between;gap:26px;display:flex}.f-legal{border-top:1px solid var(--line);margin-top:22px;padding-top:18px;font-size:13.5px;line-height:1.7}