:root{--ground:#f7f5f2;--surface:#fff;--sunk:#e7eae0;--ink:#224150;--ink-2:#4d525a;--muted:#6b7176;--rule:#dde0d7;--green:#54843c;--green-deep:#456e30;--green-soft:#e4ecd7;--green-text:#46712f;--panel:#224150;--panel-2:#2d5264;--panel-ink:#f7f5f2;--panel-muted:#f7f5f2a8;--panel-rule:#f7f5f229;--accent:#c4de87;--accent-ink:#224150;--shadow:#22415047;--serif:"IBM Plex Serif", Georgia, "Times New Roman", serif;--sans:"Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;--num:var(--sans);--caps:.07em;--panel-w:292px;--pad:clamp(22px, 3.2vw, 56px);color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--ground:#0f1d25;--surface:#162833;--sunk:#0b161c;--ink:#f2f0eb;--ink-2:#c2c8c6;--muted:#8d999e;--rule:#243a45;--green:#6fa64f;--green-deep:#8dc15f;--green-soft:#1b3024;--green-text:#a8cf7b;--panel:#0a161d;--panel-2:#17303c;--panel-ink:#f2f0eb;--panel-muted:#f2f0eb99;--panel-rule:#f2f0eb1f;--accent-ink:#172a33;--shadow:#00000080;color-scheme:dark}}:root[data-theme=dark]{--ground:#0f1d25;--surface:#162833;--sunk:#0b161c;--ink:#f2f0eb;--ink-2:#c2c8c6;--muted:#8d999e;--rule:#243a45;--green:#6fa64f;--green-deep:#8dc15f;--green-soft:#1b3024;--green-text:#a8cf7b;--panel:#0a161d;--panel-2:#17303c;--panel-ink:#f2f0eb;--panel-muted:#f2f0eb99;--panel-rule:#f2f0eb1f;--accent-ink:#172a33;--shadow:#00000080;color-scheme:dark}@view-transition{navigation:auto}@media (prefers-reduced-motion:reduce){@view-transition{navigation:none}*,:before,:after{transition:none!important;animation:none!important}}*,:before,:after{box-sizing:border-box}html{background:var(--ground);-webkit-text-size-adjust:100%}body{background:var(--ground);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;margin:0}img{max-width:100%;height:auto}[hidden]{display:none!important}h1,h2,h3{font-family:var(--serif);color:var(--ink);letter-spacing:-.008em;text-wrap:balance;margin:0;font-weight:500}p{margin:0}p,li,dd,dt,summary{text-wrap:pretty}a{color:var(--green-text)}:focus-visible{outline:2px solid var(--green);outline-offset:3px}.tabular,.facts dd,.stats dd,.rows dd,.rows .total dd,.steps .n{font-family:var(--num);font-variant-numeric:lining-nums tabular-nums}.skip{z-index:100;background:var(--ink);color:var(--ground);border-radius:8px;padding:10px 14px;text-decoration:none;position:absolute;top:-80px;left:12px}.skip:focus{top:12px}.app{grid-template-columns:var(--panel-w) minmax(0, 1fr);min-height:100dvh;display:grid}.panel{background:var(--panel);height:100dvh;color:var(--panel-ink);view-transition-name:panel;flex-direction:column;display:flex;position:sticky;top:0;overflow-y:auto}.brand{padding:26px 26px 6px}.wordmark{color:var(--panel-ink);font:500 21px/1.2 var(--serif);letter-spacing:-.005em;text-decoration:none;display:block}.wordmark small{font:400 12.5px/1.3 var(--sans);letter-spacing:.02em;color:var(--panel-muted);margin-top:5px;display:block}.pnav{flex:1;padding:0 14px 10px}.pgrp{font:600 11px/1 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--panel-muted);padding:18px 12px 8px}.pnav .pgrp:first-child{padding-top:24px}.pnav a{color:#f7f5f2bd;border-radius:6px;align-items:center;gap:10px;padding:8px 12px;font-size:14.5px;text-decoration:none;transition:background .15s,color .15s;display:flex}.pnav a:before{content:"";background:var(--accent);flex:none;width:0;height:2px;transition:width .2s}.pnav a:hover{color:var(--panel-ink);background:#ffffff0a}.pnav a[aria-current=page]{color:var(--panel-ink);background:var(--panel-2);font-weight:500}.pnav a[aria-current=page]:before{width:14px}.pnav .got{border:1px dashed var(--panel-rule);color:var(--panel-ink);margin-top:14px}.pcta{gap:8px;padding:14px 26px 8px;display:grid}.pfoot{color:var(--panel-muted);gap:4px;padding:10px 26px 24px;font-size:13px;display:grid}.pfoot a{color:var(--panel-ink);text-decoration:none}.pfoot a:hover{text-decoration:underline}.powered{width:150px;height:auto;margin:12px 0 18px;display:block}.stage{flex-direction:column;min-width:0;display:flex}.vbody{width:100%;max-width:1160px;padding:clamp(34px, 6vh, 72px) var(--pad) 40px;flex:1;margin-inline:auto}.vfoot{width:100%;max-width:1160px;padding:18px var(--pad) 22px;border-top:1px solid var(--rule);justify-content:space-between;gap:12px;margin-inline:auto;display:flex}.vfoot a{color:var(--muted);padding:6px 0;font-size:14px;text-decoration:none}.vfoot a:hover b{text-decoration:underline}.vfoot span{letter-spacing:var(--caps);text-transform:uppercase;font-size:11px;display:block}.vfoot b{color:var(--ink);font-weight:500}.vfoot .nx{text-align:right;margin-left:auto}.site-foot{width:100%;max-width:1160px;padding:18px var(--pad) 30px;border-top:1px solid var(--rule);color:var(--muted);margin-inline:auto;font-size:12.5px}.site-foot a{color:var(--muted)}.kicker{font:600 12px/1 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--green-text);margin-bottom:16px}.xl{letter-spacing:-.018em;max-width:22ch;font-size:clamp(34px,3.8vw,52px);line-height:1.08}.lg{letter-spacing:-.012em;font-size:clamp(27px,2.7vw,37px);line-height:1.18}h3,.h3{font-size:20px;line-height:1.35}.lead{max-width:54ch;color:var(--ink-2);margin-top:18px;font-size:18px;line-height:1.62}.body{max-width:64ch;color:var(--ink-2)}.small{color:var(--ink-2);font-size:14.5px}.fine{color:var(--muted);font-size:12.5px}.card>.h3,.aside-card .h3,.embed-card>.h3{font-family:var(--sans);letter-spacing:-.003em;font-size:19px;font-weight:600;line-height:1.35}.head{max-width:760px}.head h1:after{content:"";background:var(--accent);width:88px;height:2px;margin-top:18px;display:block}.acts{flex-wrap:wrap;gap:10px;margin-top:30px;display:flex}.btn,.btn-3{font:500 15px/1.1 var(--sans);letter-spacing:.002em;white-space:nowrap;cursor:pointer;border:1.5px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:15px 24px;text-decoration:none;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.btn{background:var(--green);color:#fff;font-weight:600}.btn:hover{background:var(--green-deep)}.btn-3{color:var(--ink);border-color:var(--rule);background:0 0}.btn-3:hover{border-color:var(--ink-2)}.btn-block{width:100%}.panel .btn{background:var(--accent);width:100%;color:var(--accent-ink)}.panel .btn:hover{background:#d3e8a1}.panel .btn-3{width:100%;color:var(--panel-ink);border-color:var(--panel-rule)}.panel .btn-3:hover{border-color:var(--panel-muted)}.ov{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;gap:clamp(28px,4vw,64px);display:grid}.ov>div:first-child{container-type:inline-size}.facts{border-top:1px solid var(--rule);grid-template-columns:repeat(2,auto);justify-content:start;gap:18px 44px;margin:38px 0 0;padding-top:20px;display:grid}.facts dt{font:500 11px/1.2 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--muted);white-space:nowrap}.facts dd{letter-spacing:-.015em;color:var(--ink);margin:7px 0 0;font-size:23px;font-weight:600;line-height:1.1}@container (width>=545px){.facts{grid-template-columns:repeat(4,auto);gap:18px 32px}}.slip{border:1px solid var(--rule);background:var(--surface);box-shadow:0 18px 40px -26px var(--shadow);border-radius:14px;padding:26px 26px 22px;position:relative}.slip-top{border-bottom:1px dashed var(--rule);justify-content:space-between;align-items:baseline;gap:12px;padding-bottom:14px;display:flex}.slip-top b{font:600 11px/1 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--muted)}.slip-top span{color:var(--muted);font-size:12px}.slip>.h3{margin-top:16px;font-size:21px;line-height:1.28}.stamp{background:var(--green);color:#fff;font:600 11px/1 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;border-radius:999px;padding:7px 11px;position:absolute;top:-12px;right:22px}.checks{gap:8px;margin:16px 0 20px;padding:0;list-style:none;display:grid}.checks li{color:var(--ink-2);padding-left:24px;font-size:14.5px;position:relative}.checks li:before{content:"";border-left:2px solid var(--green);border-bottom:2px solid var(--green);width:10px;height:5px;position:absolute;top:.45em;left:2px;transform:rotate(-45deg)}.calc-link,.study-link{border-top:1px dashed var(--rule);margin-top:18px;padding-top:14px;font-size:14px;font-weight:500;text-decoration:none;display:block}.calc-link:hover,.study-link:hover{text-decoration:underline}.bandrow{border:1px solid var(--rule);background:var(--surface);border-radius:14px;grid-template-columns:auto 1fr auto;align-items:center;gap:18px 32px;margin-top:52px;padding:26px 30px;display:grid}.cssi-logo img{height:auto;display:block}.logo-on-dark{display:none!important}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .logo-on-light{display:none!important}:root:not([data-theme=light]) .logo-on-dark{display:block!important}}:root[data-theme=dark] .logo-on-light{display:none!important}:root[data-theme=dark] .logo-on-dark{display:block!important}.steps{max-width:820px;margin:40px 0 0;padding:0;list-style:none;display:grid}.steps li{border-top:1px solid var(--rule);grid-template-columns:40px 1fr;gap:20px;padding:22px 0;display:grid}.steps li:last-child{border-bottom:1px solid var(--rule)}.steps .n{letter-spacing:-.01em;color:var(--green-text);font-size:19px;font-weight:600;line-height:1.42}.steps .h3{font-size:19px;line-height:1.35}.steps p{margin-top:6px}.steps-tight{margin-top:16px}.steps-tight li{grid-template-columns:26px 1fr;gap:14px;padding:14px 0}.steps-tight .n{font-size:16px;line-height:1.6}.who{background:var(--sunk);font:600 11px/1 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--ink-2);border-radius:4px;margin-top:10px;padding:5px 9px;display:inline-block}.split-main>.card{margin-top:30px}.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:36px;display:grid}.card{border:1px solid var(--rule);background:var(--surface);border-radius:14px;padding:22px 24px}.rows{margin:12px 0 0;display:grid}.rows div{border-bottom:1px solid var(--rule);justify-content:space-between;align-items:baseline;gap:16px;padding:10px 0;font-size:14.5px;display:flex}.rows dt{color:var(--ink-2)}.rows dd{text-align:right;letter-spacing:-.008em;color:var(--ink);margin:0;font-weight:500}.rows .total{border-bottom:0;padding-top:14px}.rows .total dt{color:var(--ink);font-weight:500}.rows .total dd{letter-spacing:-.02em;color:var(--green-text);font-size:25px;font-weight:600;line-height:1.1}.two{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:clamp(24px,4vw,56px);margin-top:36px;display:grid}.two.mid{align-items:center;margin-top:0}.two.mid .points{margin-top:36px}.basis-note .kicker{margin-bottom:16px}.points{gap:18px;margin:0;padding:0;list-style:none;display:grid}.points li{padding-left:22px;position:relative}.points li:before{content:"";background:var(--green);width:10px;height:2px;position:absolute;top:.62em;left:0}.points b{color:var(--ink);font-weight:600;display:block}.faq{border-top:1px solid var(--rule);max-width:820px;margin-top:34px}.faq details{border-bottom:1px solid var(--rule)}.faq summary{cursor:pointer;font:500 16.5px/1.45 var(--sans);letter-spacing:-.003em;color:var(--ink);justify-content:space-between;align-items:baseline;gap:18px;padding:17px 0;list-style:none;display:flex}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font:400 21px/1 var(--sans);color:var(--green-text);flex:none;transition:transform .2s}.faq details[open] summary:after{transform:rotate(45deg)}.faq p{max-width:66ch;color:var(--ink-2);padding:0 0 20px;font-size:15.5px}.stats{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);grid-template-columns:repeat(3,minmax(0,1fr));margin:36px 0 0;display:grid}.stats div{padding:24px 20px 22px 0}.stats div+div{border-left:1px solid var(--rule);padding-left:24px}.stats dd{letter-spacing:-.022em;color:var(--green-text);margin:0;font-size:clamp(30px,3vw,40px);font-weight:600;line-height:1.05}.stats dt{color:var(--ink-2);margin-top:10px;font-size:14.5px}.stats div{flex-direction:column-reverse;justify-content:flex-end;display:flex}.src{margin-top:10px}.note{background:var(--green-soft);max-width:760px;color:var(--ink);border-radius:12px;margin-top:28px;padding:18px 20px}.note b{font-weight:600}.person{grid-template-columns:132px 1fr;align-items:start;gap:26px;max-width:780px;margin-top:34px;display:grid}.avatar{border:1px solid var(--rule);background:var(--sunk);object-fit:cover;border-radius:14px;width:132px;height:132px;display:block}.person .title{margin-top:4px}.person .body{margin-top:16px}.tags{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}.tag{background:var(--sunk);font:600 11px/1 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--ink-2);border-radius:4px;padding:6px 10px}.contact{gap:4px;margin-top:20px;font-size:15px;display:grid}.formwrap{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:start;gap:clamp(24px,4vw,56px);margin-top:34px;display:grid}.stack{gap:22px;display:grid}.embed-card{border:1px solid var(--rule);background:var(--surface);border-radius:14px;padding:24px}.embed-card>.small{margin-top:6px}.embed-frame{margin-top:16px}.embed-frame iframe{border:0;border-radius:10px;width:100%;display:block}.embed-bare .embed-frame{margin-top:12px}.embed-frame{position:relative}.embed-frame iframe{background:0 0;position:relative}.embed-loading{pointer-events:none;align-content:start;gap:14px;padding:4px 2px;display:grid;position:absolute;inset:0}.embed-loading span{background:linear-gradient(90deg, var(--sunk) 0%, var(--ground) 50%, var(--sunk) 100%);background-size:200% 100%;border-radius:8px;height:46px;animation:1.3s linear infinite embed-shimmer;display:block}.embed-loading .bar-btn{border-radius:999px;height:50px;margin-top:4px}.embed-loading p{color:var(--muted);font-size:13px}.is-loaded>.embed-loading{display:none}@keyframes embed-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.book{max-width:860px}.embed-missing{border:1.5px dashed var(--rule);text-align:center;min-height:260px;color:var(--muted);border-radius:12px;place-items:center;margin-top:16px;padding:28px;font-size:14px;display:grid}.embed-missing b{color:var(--ink);margin-bottom:6px;font-weight:500;display:block}.embed-missing code{background:var(--sunk);border-radius:4px;padding:1px 5px}.confirm-ok{background:var(--green-soft);color:var(--ink);border-radius:8px;padding:12px 14px;font-weight:500}.confirm .h3{margin-top:22px}.calc-card .kicker{margin-bottom:10px}.calc-card .small{margin-top:8px}.calc-card .acts{margin-top:18px}.calc-card .fine{margin-top:12px}.glossary{gap:14px;margin:14px 0 0;display:grid}.glossary div{border:1px solid var(--rule);background:var(--surface);border-radius:12px;padding:16px 18px}.glossary dt{letter-spacing:-.003em;color:var(--ink);font-weight:600}.glossary dd{color:var(--ink-2);margin:4px 0 0;font-size:15px}.copybox{border:1px solid var(--rule);background:var(--surface);color:var(--ink-2);border-radius:12px;margin-top:14px;padding:18px 20px;font-size:15px}.copyrow{flex-wrap:wrap;align-items:center;gap:10px;margin-top:10px;display:flex}.mt-s{margin-top:6px}.mt-l{margin-top:30px}.split{grid-template-columns:minmax(0,1fr) 330px;align-items:start;gap:clamp(28px,4vw,64px);display:grid}.split-main{min-width:0}.split>aside{position:sticky;top:36px}.aside-card{border:1px solid var(--rule);background:var(--surface);border-radius:14px;padding:22px 22px 20px}.aside-card .kicker{margin-bottom:8px}.aside-card .small{margin-top:8px}.aside-acts{gap:8px;margin-top:16px;display:grid}.aside-acts .btn,.aside-acts .btn-3{width:100%}.aside-card .fine{margin-top:12px}.team{margin:12px 0 0;padding:0;list-style:none}.team li{border-top:1px solid var(--rule);padding:12px 0}.team li:first-child{border-top:0;padding-top:6px}.team b{color:var(--ink);font-weight:500;display:block}.team span{letter-spacing:var(--caps);text-transform:uppercase;color:var(--green-text);margin:3px 0 5px;font-size:11.5px;font-weight:600;display:block}.team p{color:var(--ink-2);font-size:14px}.head-row{justify-content:space-between;align-items:flex-start;gap:40px;display:flex}.head-row .cssi-logo{flex:none;margin-top:10px}.alist{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:36px;display:grid}.acard{border:1px solid var(--rule);background:var(--surface);border-radius:14px;flex-direction:column;display:flex;position:relative;overflow:hidden}.acard img{object-fit:cover;width:100%;height:180px}.acard-body{flex-direction:column;flex:1;padding:20px 22px;display:flex}.acard-meta{font:600 11px/1.4 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--muted);gap:12px;display:flex}.acard-meta .pillar{color:var(--green-text)}.acard .h3{margin-top:8px}.acard .h3 a{color:var(--ink);text-decoration:none}.acard .h3 a:after{content:"";position:absolute;inset:0}.acard .small{margin-top:8px}.acard-more{color:var(--green-text);margin-top:auto;padding-top:14px;font-size:14px;font-weight:500}.acard:hover .h3 a{text-decoration:underline}.article{max-width:740px}.back{font-size:14px;font-weight:500;text-decoration:none}.article-meta{font:600 11px/1.4 var(--sans);letter-spacing:var(--caps);text-transform:uppercase;color:var(--muted);flex-wrap:wrap;gap:4px 12px;margin-top:26px;display:flex}.article-meta .pillar{color:var(--green-text)}.article h1{margin-top:10px}.byline{color:var(--muted);margin-top:22px;font-size:14px}.byline b{color:var(--ink);font-weight:500}.article-image{object-fit:cover;border-radius:14px;width:100%;max-height:26rem;margin-top:30px}.article-foot{border-top:1px solid var(--rule);margin-top:44px;padding-top:20px}.related{margin-top:56px}.prose-article{color:var(--ink-2);margin-top:34px;font-size:17px;line-height:1.75}.prose-article>*+*{margin-top:1.15em}.prose-article h2{margin-top:2.1em;font-size:26px;line-height:1.28}.prose-article h3{margin-top:1.8em;font-size:20px;line-height:1.35}.prose-article table{font-variant-numeric:lining-nums tabular-nums}.prose-article ul,.prose-article ol{padding-left:1.35em}.prose-article li+li{margin-top:.4em}.prose-article blockquote{border-left:3px solid var(--accent);margin-inline:0;padding-left:1.1em;font-style:italic}.prose-article code{background:var(--sunk);border-radius:4px;padding:.15em .4em;font-size:.9em}.prose-article img{border-radius:12px}.prose-article table{border-collapse:collapse;width:100%;font-size:15px;display:block;overflow-x:auto}.prose-article th,.prose-article td{border:1px solid var(--rule);text-align:left;padding:.6em .75em}.pnav a,.mnav a,.btn,.btn-3,.mcall,.pfoot,.contact,.acard-meta,.article-meta,.faq summary,.who,.slip-top span{font-variant-numeric:lining-nums}.mtop,.mbar{display:none}@media (width<=1180px){.split{grid-template-columns:1fr}.split>aside{max-width:560px;position:static}.head-row{flex-direction:column-reverse;gap:22px}.head-row .cssi-logo{margin-top:0}}@media (width<=1000px){.app{display:block}.panel{display:none}.stage{padding-bottom:84px}.mtop{z-index:40;background:var(--panel);color:var(--panel-ink);view-transition-name:mtop;display:block;position:sticky;top:0}.mhdr{padding:calc(12px + env(safe-area-inset-top,0px)) 18px 12px;justify-content:space-between;align-items:center;gap:12px;display:flex}.mhdr .wordmark{letter-spacing:-.008em;font-size:18px}.mhdr .wordmark small{margin-top:3px;font-size:11.5px}.mcall{border:1px solid var(--panel-rule);color:var(--panel-ink);white-space:nowrap;border-radius:999px;padding:8px 12px;font-size:13.5px;text-decoration:none}.mnav{border-top:1px solid var(--panel-rule);scrollbar-width:none;overflow-x:auto}.mnav::-webkit-scrollbar{display:none}.mnav-in{width:max-content;padding:0 10px;display:flex}.mnav a{color:#f7f5f29e;white-space:nowrap;border-bottom:2px solid #0000;padding:12px 11px 10px;font-size:13.5px;font-weight:500;text-decoration:none}.mnav a[aria-current=page]{color:var(--panel-ink);border-bottom-color:var(--accent)}.mbar{z-index:45;padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--rule);background:var(--surface);view-transition-name:mbar;gap:8px;display:flex;position:fixed;bottom:0;left:0;right:0}.mbar .btn,.mbar .btn-3{flex:1;padding:13px 12px;font-size:14.5px}.ov,.two,.formwrap{grid-template-columns:1fr}.facts{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px;display:grid}.facts dt{white-space:normal}.bandrow{grid-template-columns:1fr}}@media (width<=640px){.cards,.alist,.stats{grid-template-columns:1fr}.stats div+div{border-left:0;border-top:1px solid var(--rule);padding-left:0}.person{grid-template-columns:1fr}.steps li{grid-template-columns:28px 1fr;gap:14px}.steps .n,.lead{font-size:17px}.faq summary{font-size:16px}.facts dd{font-size:21px}.vfoot{flex-direction:column}.vfoot .nx{text-align:left;margin-left:0}}
