:root{color-scheme:light;--ink:#162b46;--muted:#65758a;--paper:#fbfaf7;--line:#dde3e9;--blue:#245e9b}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,summary:focus-visible{outline:3px solid #377fc3;outline-offset:5px}img{max-width:100%}.pt-wrap{width:min(1180px,calc(100% - 96px));margin:auto}.pt-skip{position:absolute;top:-100px;left:16px;background:white;padding:12px;z-index:5}.pt-skip:focus{top:8px}.pt-demo{display:flex;justify-content:center;align-items:center;gap:10px;padding:11px 24px;background:#142b47;color:#e9eff8;font-size:11px;letter-spacing:.03em}.pt-demo a{margin-left:20px;color:#b8d8ff}.pt-status{width:6px;height:6px;flex:none;border-radius:50%;background:#9fd5bc;box-shadow:0 0 0 4px #9fd5bc15}.pt-header{display:flex;justify-content:space-between;align-items:center;padding:32px 0;border-bottom:1px solid var(--line)}.pt-brand{display:flex;gap:9px;align-items:center;font-size:23px;font-weight:750;letter-spacing:-.8px}.pt-brand span{font-family:Georgia,serif;font-weight:400;letter-spacing:-1px}.pt-header nav{display:flex;align-items:center;gap:30px;font-size:12px;font-weight:600}.pt-language{border:1px solid var(--line);border-radius:50%;padding:8px;font-size:11px}.pt-kicker{display:flex;gap:22px;align-items:center;font-size:10px;letter-spacing:1.8px;font-weight:650}.pt-kicker span{color:var(--muted);font-weight:400}main>.pt-kicker{margin-top:50px}.pt-intro{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;padding:30px 0 64px;border-bottom:1px solid var(--line);align-items:center}h1{font-size:clamp(40px,4.3vw,64px);font-weight:550;line-height:1.04;letter-spacing:-3px;margin:0 0 25px}h1 em{font:italic 1.08em Georgia,serif;color:#35648e}.pt-deck{max-width:500px;color:var(--muted);font-size:16px;line-height:1.8}.pt-byline{display:flex;gap:12px;align-items:center;margin-top:30px;font-size:11px}.pt-byline strong,.pt-byline div>span{display:block}.pt-byline div>span{color:var(--muted);margin-top:3px}.pt-avatar{border:1px solid #cbd6e0;border-radius:50%;padding:12px;font:italic 15px Georgia,serif}.pt-art{position:relative;isolation:isolate;overflow:hidden;aspect-ratio:1.08;background:linear-gradient(140deg,#0d2036,#1e4264 70%,#62869d);border-radius:3px;color:#f3f6ff}.pt-art-grid{position:absolute;inset:0;background-image:linear-gradient(#d6e5f00c 1px,transparent 1px),linear-gradient(90deg,#d6e5f00c 1px,transparent 1px);background-size:42px 42px;transform:perspective(400px) rotateX(35deg) scale(1.4)}.pt-art-disc{position:absolute;width:38%;aspect-ratio:1;left:14%;top:18%;border-radius:50%;background:radial-gradient(circle at 30% 25%,#fbf4e5,#dbc9a9 60%,#728994);box-shadow:20px 30px 50px #05122370,inset -10px -20px 25px #56728750}.pt-art-arch{position:absolute;width:43%;height:61%;right:16%;bottom:-9%;border:35px solid #acc9d8;border-bottom:0;border-radius:120px 120px 0 0;transform:rotate(-18deg);box-shadow:inset 12px 3px 20px #20364c90,10px 10px 30px #00112150;background:linear-gradient(135deg,#34536b,#17324e)}.pt-art-orbit{position:absolute;width:85%;height:45%;border:1px solid #d9e9f994;border-radius:50%;transform:rotate(-40deg);left:7%;top:29%;box-shadow:0 0 18px #c8ddec10}.pt-art-orbit:after{content:"";position:absolute;width:8px;height:8px;background:#d7eafa;border-radius:50%;left:49%;top:-4px;box-shadow:0 0 18px #daf1ff}.pt-art-label{position:absolute;left:26px;bottom:26px;font-size:11px;line-height:1.8;letter-spacing:2px}.pt-art-number{position:absolute;right:20px;top:22px;font-size:8px;letter-spacing:1.5px;writing-mode:vertical-rl}.pt-reading-layout{display:grid;grid-template-columns:minmax(0,720px) 300px;gap:90px;padding-top:58px}.pt-story{min-width:0;font:18px/1.95 Georgia,"Times New Roman",serif;color:#354352}.pt-story p{margin:0 0 25px}.pt-opening:first-letter{font-size:65px;line-height:.9;float:left;margin:12px 10px 0 0;color:var(--ink)}h2{color:var(--ink);font:550 28px/1.3 system-ui,sans-serif;letter-spacing:-1px;margin:44px 0 20px}.pt-story .pt-slot{margin:42px 0;clear:both}.pt-slot{font:14px/1.5 system-ui,sans-serif;min-width:0}.pt-ad-label{display:block;margin-bottom:12px;text-transform:uppercase;letter-spacing:1.6px;font-size:9px;color:#758191}.pt-slot [data-coreads-slot]{min-height:110px}.pt-sidebar{min-width:0}.pt-contents{border-top:2px solid var(--ink);padding-top:20px;margin-bottom:40px}.pt-contents .pt-kicker{margin-bottom:18px}.pt-contents>a{display:flex;gap:16px;font-size:11px;color:var(--muted);padding:12px 0;border-bottom:1px solid var(--line)}.pt-contents>a span{font-size:13px;color:var(--ink)}.pt-margin-note{border-top:1px solid var(--line);margin-top:36px;padding-top:26px}.pt-margin-note>span,.pt-note>span{font:600 9px/1.4 system-ui,sans-serif;letter-spacing:1.6px;color:var(--muted)}.pt-margin-note p{font:italic 23px/1.5 Georgia,serif}.pt-margin-note a{font-size:12px;border-bottom:1px solid #c9d3df;padding-bottom:6px}blockquote{margin:42px 0;padding:5px 0 5px 28px;border-left:2px solid #6b90ad;color:#224b70}blockquote p{font:italic 31px/1.5 Georgia,serif!important;letter-spacing:-.5px;margin-bottom:16px!important}blockquote cite{font:11px/1.5 system-ui,sans-serif;color:var(--muted)}.pt-note{background:#eef1f3;border-radius:3px;padding:25px 30px;margin:32px 0}.pt-note p{font:17px/1.7 system-ui,sans-serif;margin:10px 0 0}.pt-endmark{font-size:28px;color:#365b81}.pt-implementation{display:grid;grid-template-columns:1fr 1.1fr;gap:70px;border-top:1px solid var(--line);padding:55px 0 60px;margin-top:35px}.pt-implementation h2{font-size:32px;margin:20px 0}.pt-implementation p:not(.pt-kicker){color:var(--muted);font-size:13px;line-height:1.8;max-width:450px}.pt-codes{align-self:center;min-width:0}details{border-top:1px solid var(--line)}details:last-child{border-bottom:1px solid var(--line)}summary{cursor:pointer;padding:20px 2px;font-size:13px;font-weight:550}summary>span{float:right;font:10px/2 monospace;color:var(--muted)}pre{max-width:100%;padding:18px;background:#eef1f5;white-space:pre-wrap;overflow-wrap:anywhere;font:11px/1.8 monospace;border-radius:5px}.pt-footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:28px 0 40px;gap:20px}.pt-footer .pt-brand{font-size:18px}.pt-footer p,.pt-footer>a:last-child{font-size:11px;color:var(--muted)}
@media(min-width:1100px){.pt-sidebar{padding-top:6px}.pt-margin-note{margin-bottom:30px}}
@media(max-width:1100px){.pt-wrap{width:calc(100% - 64px)}.pt-reading-layout{grid-template-columns:minmax(0,1fr) 270px;gap:40px}.pt-intro{gap:35px}h1{letter-spacing:-2px}.pt-header nav{gap:18px}}
@media(max-width:800px){.pt-reading-layout{grid-template-columns:1fr;gap:30px}.pt-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}.pt-contents{display:none}.pt-margin-note{margin:0}.pt-intro{grid-template-columns:1fr 1fr;gap:25px}.pt-art{aspect-ratio:.8}.pt-art-arch{border-width:23px}.pt-deck{font-size:14px}.pt-implementation{gap:30px}.pt-header nav>a:first-child{display:none}.pt-story{font-size:18px}.pt-footer p{display:none}}
@media(max-width:560px){.pt-wrap{width:calc(100% - 40px)}.pt-demo{font-size:9px;padding:10px 18px;line-height:1.5}.pt-demo a{display:none}.pt-header{padding:23px 0}.pt-brand{font-size:20px}.pt-header nav{gap:14px}.pt-header nav>a:nth-child(2){font-size:10px}.pt-brand img{width:25px;height:25px}main>.pt-kicker{margin-top:30px;font-size:8px;gap:13px}.pt-intro{grid-template-columns:1fr;gap:28px;padding:25px 0 35px}h1{font-size:44px}.pt-deck{font-size:15px}.pt-byline{margin-top:22px}.pt-art{aspect-ratio:1.5}.pt-art-disc{width:30%}.pt-art-arch{height:85%;width:34%;border-width:24px}.pt-reading-layout{padding-top:32px}.pt-story{font-size:17px;line-height:1.9}h2{font-size:24px;letter-spacing:-.6px}blockquote{padding-left:20px}blockquote p{font-size:26px!important}.pt-note{padding:22px}.pt-sidebar{grid-template-columns:1fr}.pt-sidebar .pt-slot{max-width:320px;width:100%;margin:0 auto}.pt-margin-note{display:none}.pt-implementation{grid-template-columns:1fr;gap:20px;margin-top:35px;padding-top:32px}.pt-footer .pt-brand{font-size:17px}.pt-footer>a:last-child{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Editorial finishing: readable labels, consistent rhythm and accessible navigation. */
:root{--muted:#52657b}
::selection{background:#d5e5ed;color:var(--ink)}
h1,.pt-implementation h2{text-wrap:balance}
.pt-deck{text-wrap:pretty}
.pt-language{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:8px}
.pt-header nav>a:not(.pt-language){padding:12px 0}
.pt-art{border-radius:6px;box-shadow:0 18px 40px -24px #142b4755}
.pt-ad-label{color:#52657b;font-size:10px;letter-spacing:1.3px}
.pt-contents>a{min-height:44px}
.pt-contents>a:hover span{text-decoration:underline;text-underline-offset:4px}
.pt-margin-note>span,.pt-note>span{font-size:10px}
.pt-note{border-left:3px solid #6b90ad}
.pt-implementation{background:#edf1f4;border:1px solid #d7dfe6;border-radius:8px;padding:36px;gap:40px;margin-bottom:48px}
.pt-implementation .pt-kicker{margin-top:0}
.pt-implementation p:not(.pt-kicker){font-size:14px}
.pt-codes details{border-color:#c9d3dd}
.pt-codes summary{display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none;min-height:60px}
.pt-codes summary::-webkit-details-marker{display:none}
.pt-codes summary:before{content:'+';font:20px/1 system-ui,sans-serif;color:var(--blue)}
.pt-codes details[open] summary:before{content:'−'}
.pt-codes summary>span{float:none;margin-left:auto;flex-shrink:0;color:#52657b}
.pt-codes pre{background:var(--paper);border:1px solid #d7dfe6;margin-top:0}
.pt-footer>a:last-child{padding:12px 0}
@media(max-width:800px){
 .pt-sidebar{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
 .pt-implementation{padding:28px;gap:24px}
}
@media(max-width:560px){
 .pt-header nav{gap:12px}
 .pt-header nav>a:nth-child(2){font-size:11px}
 .pt-demo{font-size:10px}
 .pt-kicker{flex-wrap:wrap;row-gap:6px}
 .pt-sidebar{grid-template-columns:minmax(0,1fr)}
 .pt-implementation{padding:22px 18px;margin-bottom:30px;gap:16px}
 .pt-implementation h2{font-size:28px}
 .pt-codes summary{flex-wrap:wrap;justify-content:flex-start;gap:8px;font-size:12px}
 .pt-codes summary>span{font-size:9px}
 .pt-footer{flex-wrap:wrap;gap:8px;padding-top:20px}
}
/* Three native presentations within the real article placements. */
.pt-layout-index{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:26px 0;border-bottom:1px solid var(--line)}
.pt-layout-index>div:first-child>strong{font-size:16px;font-weight:600}.pt-layout-index p{font-size:12px;line-height:1.6;color:var(--muted);margin:6px 0 0;max-width:380px}
.pt-layout-index>div:last-child{display:flex;gap:10px}.pt-layout-index a{display:flex;flex-direction:column;gap:4px;min-width:125px;padding:13px 16px;background:#edf1f4;border:1px solid #d7dfe6;border-radius:7px}.pt-layout-index a:hover{background:#e2eaf1}.pt-layout-index a strong{font-size:13px;font-weight:600}.pt-layout-index a strong span{float:right;margin-left:14px}.pt-layout-index a>span{font-size:10px;color:var(--muted)}
.pt-slot{scroll-margin-top:28px}.pt-slot-heading{display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;margin-bottom:13px}.pt-slot-heading>strong{font-size:14px;font-weight:600;color:var(--ink)}.pt-slot-heading .pt-ad-label{margin:0;font-size:9px;letter-spacing:.7px}
@media(max-width:1000px){.pt-layout-index{align-items:flex-start;flex-direction:column;gap:18px}.pt-layout-index>div:last-child{width:100%}.pt-layout-index a{flex:1;min-width:0}}
@media(max-width:400px){.pt-layout-index>div:last-child{gap:6px}.pt-layout-index a{padding:12px 8px}.pt-layout-index a strong{font-size:12px}.pt-layout-index a strong span{margin-left:4px}.pt-layout-index a>span{font-size:9px}}

/* Real publisher containers bound the renderer; no zoom or image enlargement. */
.pt-slot[data-position=in_article]{width:400px;max-width:100%}
.pt-slot[data-position=under_article]{width:350px;max-width:100%}
.pt-slot[data-position=sidebar]{width:300px;max-width:100%}
.pt-ad-size{font:11px/1.5 system-ui,sans-serif!important;color:var(--muted);margin:8px 0 0!important}