/* Two editorial selection topics. Scoped to sg-*; shared navigation below. */
.sg-hero{background:#e7eff6;padding:40px 0 0;border-top:1px solid #d2deea}
.sg-hero-grid{display:grid;grid-template-columns:1.13fr 1fr;gap:56px;align-items:center;min-height:510px;padding-bottom:40px}
.sg-kicker{font-size:12px;letter-spacing:.12em;font-weight:650;color:#326386;margin-bottom:26px}
.sg-hero h1{font-family:var(--display);font-size:clamp(44px,5.35vw,78px);line-height:1.04;letter-spacing:-.04em;font-weight:700}
.sg-lead{font-size:18px;line-height:1.8;max-width:560px;margin:28px 0;color:#46627a}
.sg-actions{display:flex;align-items:center;flex-wrap:wrap;gap:20px}
.sg-text-link{display:inline-block;text-decoration:underline;text-underline-offset:5px;font-size:14px;line-height:1.7;font-weight:600;padding-block:10px}
.sg-text-link:hover{color:#286694}
.sg-hero-image{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;background:radial-gradient(ellipse at center,#fff 0%,#fff0 70%)}
.sg-hero-image img{width:100%;height:400px;object-fit:contain;mix-blend-mode:multiply}
.sg-hero-image figcaption{font-size:12px;color:#526c82;line-height:1.6;text-align:center;max-width:340px;margin-top:12px}
.sg-path{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #b8cbdb}
.sg-path a{display:flex;gap:18px;padding:26px 18px;align-items:center;border-right:1px solid #b8cbdb;font-size:14px;font-weight:600}
.sg-path a:first-child{padding-left:0}.sg-path a:last-child{border:0}.sg-path span{color:#b83f3b;font:18px var(--display)}.sg-path a:hover{color:#205e8c}
.sg-toc{position:sticky;top:86px;z-index:25;background:#fff;border-bottom:1px solid #cdd9e5;box-shadow:0 2px 10px #0e2a4507}
.sg-toc>.v4-wrap{display:flex;align-items:center;gap:20px;justify-content:space-between}
.sg-toc>.v4-wrap>div{display:flex;gap:22px;min-width:0;overflow-x:auto;scrollbar-width:thin}
.sg-toc a{white-space:nowrap;display:block;padding:20px 0;font-size:12px;font-weight:600;line-height:1.5}.sg-toc a:hover{color:#b83f3b}.sg-other{color:#205e8c;text-decoration:underline;text-underline-offset:4px}
.sg-section{padding:88px 0;scroll-margin-top:165px}.sg-section h2{font-family:var(--display);font-size:clamp(32px,3.5vw,49px);line-height:1.12;letter-spacing:-.03em}
.sg-heading{display:grid;grid-template-columns:1.12fr 1fr;gap:72px;align-items:end;margin-bottom:44px}
.sg-heading>div{position:relative}.sg-number{display:block;font-size:13px;color:#b83f3b;font-weight:650;margin-bottom:16px}.sg-heading>p{font-size:16px;line-height:1.85;max-width:540px}
.sg-grid{display:grid;gap:24px}.sg-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sg-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sg-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.sg-card{background:#fff;border:1px solid #d0dde8;padding:30px;min-width:0}.sg-card h3,.sg-prose h3,.sg-example h3{font-size:22px;letter-spacing:-.02em;line-height:1.3;margin:0 0 16px}
.sg-card p,.sg-prose p{font-size:15px;line-height:1.85;margin:0 0 16px}.sg-card p:last-child,.sg-prose p:last-child{margin:0}.sg-card ul,.sg-prose ul,.sg-prose ol{padding-left:21px;color:#49657c;font-size:15px;line-height:1.85;margin:16px 0}.sg-card li,.sg-prose li{padding-left:4px;margin:9px 0}
.sg-tint{background:#e8eff5}.sg-dark{background:#102e49;color:#eef5fb}.sg-dark p,.sg-dark li{color:#c4d6e5}.sg-dark .sg-number{color:#91c8ec}.sg-dark .sg-card{background:#183b57;border-color:#3e5d76}.sg-dark .sg-label{color:#8fc7eb}.sg-dark .sg-table{border-color:#476984}.sg-dark .sg-callout{background:#1c405d;border-color:#80b6dd;color:#fff}.sg-dark .sg-note{color:#c4d6e5}
.sg-dark .sg-grid+.sg-grid{margin-top:24px}.sg-dark .sg-table{background:#fff;color:var(--ink)}.sg-dark .sg-table td{color:#49657c}
.sg-split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.sg-prose>h3:not(:first-child){margin-top:30px}.sg-prose a,.sg-note a,.sg-callout a{color:#205e8c;text-decoration:underline;text-underline-offset:4px}.sg-dark .sg-callout a{color:#b2d9f4}
.sg-example{padding:32px;background:#123b5c;color:#fff;border-left:4px solid #83b9df}.sg-example>span{display:block;color:#b6d3e7;font-size:12px;line-height:1.7;margin-bottom:18px}.sg-example h3{font-size:27px;line-height:1.5}.sg-example p{color:#d3e2ee;font-size:14px;line-height:1.85}.sg-example hr{border:0;border-top:1px solid #496980;margin:26px 0}.sg-prose .sg-example{margin-block:24px}
.sg-note{margin-top:22px;font-size:13px;line-height:1.85;color:#566e81;max-width:1080px}.sg-callout{margin-top:32px;border-left:3px solid #2b6e9d;background:#e5eff7;padding:26px 30px}.sg-callout strong{display:block;font-size:19px;margin-bottom:8px}.sg-callout p{font-size:15px;line-height:1.85;max-width:1030px}
.sg-table{max-width:100%;overflow:auto;overscroll-behavior-inline:contain;border:1px solid #c3d4e1;background:#fff}.sg-table:focus-visible{outline:3px solid #286694;outline-offset:3px}.sg-table table{width:100%;border-collapse:collapse;min-width:650px;font-size:14px;line-height:1.7}.sg-table caption{text-align:left;padding:18px 22px;background:#dce8f2;color:#183d59;font-weight:600}.sg-table th,.sg-table td{padding:18px 21px;text-align:left;vertical-align:top;border-bottom:1px solid #d6e1ea;border-right:1px solid #d6e1ea;white-space:normal}.sg-table thead th{background:#173e5c;color:#fff;font-weight:600}.sg-table tbody th{color:#183d59;font-weight:600;min-width:140px}.sg-table td{color:#49657c}.sg-table tbody tr:nth-child(even){background:#f1f6fa}.sg-table tr>:last-child{border-right:0}.sg-table tbody tr:last-child>*{border-bottom:0}.sg-table a{text-decoration:underline;text-underline-offset:3px}
.sg-specs{border:1px solid #b9cddc;background:#fff;margin-top:18px}.sg-specs:first-of-type{margin-top:32px}.sg-specs summary{list-style:none;position:relative;font-weight:600;font-size:16px;padding:22px 58px 22px 24px;cursor:pointer;line-height:1.6}.sg-specs summary::-webkit-details-marker,.sg-faq summary::-webkit-details-marker{display:none}.sg-specs summary:after{content:'+';position:absolute;right:24px;top:22px;font-size:22px;line-height:1.2}.sg-specs[open] summary:after{content:'−'}.sg-specs .sg-table{border-width:1px 0 0}.sg-specs .table-scroll{border:0}
.sg-equipment .sg-card,.sg-materials .sg-card{display:flex;flex-direction:column}.sg-equipment img{height:230px;width:100%;object-fit:contain;margin-bottom:26px}.sg-product-links{display:grid;margin-top:auto;padding-top:12px}.sg-product-links a{font-size:13px;text-decoration:underline;text-underline-offset:4px;line-height:1.65;padding:9px 0;border-top:1px solid #d8e3eb}.sg-product-links a:hover{color:#286694}
.sg-label{font-size:12px;letter-spacing:.07em;font-weight:600;color:#2f6c97;display:block;margin-bottom:20px}.sg-materials img{height:200px;width:100%;object-fit:contain;margin-bottom:24px}.sg-materials dl{font-size:13px;line-height:1.8;margin-top:5px;margin-bottom:20px}.sg-materials dt{font-weight:600;margin:12px 0 4px}.sg-materials dd{color:#526b80}.sg-materials .sg-text-link{margin-top:auto}.sg-structure img{width:100%;height:235px;object-fit:contain;margin-bottom:24px}
.sg-media-tiles{margin-bottom:32px}.sg-media-tiles img{width:100%;height:170px;object-fit:contain;margin-bottom:22px}.sg-media-tiles h3{font-size:20px}.sg-media-tiles a:hover{border-color:#286694}
.sg-motion,.sg-charge{background:#e9f0f6;padding:36px;min-height:390px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px}.sg-motion figcaption,.sg-charge figcaption{font-size:12px;line-height:1.75;color:#506b82;text-align:center;max-width:340px}.sg-orbit{width:260px;height:260px;border:2px dashed #7fa3bf;border-radius:50%;position:relative;display:grid;place-items:center;transform:rotate(-12deg)}.sg-sun{background:#1c5077;width:86px;height:86px;color:#fff;display:grid;place-items:center;border-radius:50%;font-size:14px}.sg-jar{display:grid;place-items:center;position:absolute;background:#fff;border:9px solid #9fbcd1;border-radius:50%;width:68px;height:68px;color:#143a58;font-size:13px}.sg-j1{top:-30px;left:94px}.sg-j2{right:-30px;top:94px}.sg-j3{bottom:-30px;left:94px}.sg-j4{left:-30px;top:94px}
.sg-vessel{width:230px;height:300px;border:8px solid #537895;border-top:14px solid #537895;border-radius:10px 10px 48px 48px;overflow:hidden;display:flex;flex-direction:column}.sg-vessel>div{display:grid;place-items:center;text-align:center;height:45%;background:#f7fbff;color:#476983;font-size:15px;line-height:1.7}.sg-vessel>div+div{height:55%;background:radial-gradient(circle at 10px 10px,#95b8d2 7px,transparent 8px) 0 0/23px 23px,#d4e2ed;color:#113953;font-weight:600;border-top:2px dashed #537895}
.sg-ball-sizes .sg-card{padding-top:32px}.sg-ball{height:88px;width:100%;display:flex;align-items:center;margin-bottom:28px}.sg-ball:before{content:'';display:block;width:84px;height:84px;border-radius:50%;background:radial-gradient(circle at 30% 25%,#eaf4fc,#5b829f 65%,#173e5d);box-shadow:8px 8px 20px #10304c15}.sg-ball-medium:before{width:60px;height:60px}.sg-ball-small:before{width:36px;height:36px}
.sg-trial dl{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:24px 0;border-block:1px solid #d1dfea;margin-bottom:20px}.sg-trial dt{font-size:12px;color:#587188;margin-bottom:8px}.sg-trial dd{font-size:29px;font-weight:600;letter-spacing:-.03em}.sg-trial small{font-size:14px;font-weight:400}.sg-trial details{border-top:1px solid #d1dfea;padding-top:12px;margin-top:20px}.sg-trial summary{font-size:13px;padding:8px 0;cursor:pointer}.sg-trial details p{font-size:13px;line-height:1.8;margin-top:10px}
.sg-faq{border-top:1px solid #b9cddc}.sg-faq details{border-bottom:1px solid #b9cddc}.sg-faq summary{list-style:none;position:relative;padding:25px 50px 25px 0;font-size:18px;font-weight:600;line-height:1.6;cursor:pointer}.sg-faq summary:after{content:'+';position:absolute;right:10px;top:25px;font-size:24px;line-height:1.2;color:#2c638a}.sg-faq details[open] summary:after{content:'−'}.sg-faq details>div{max-width:1000px;padding:0 45px 25px 0}.sg-faq p{font-size:16px;line-height:1.9}
.sg-close{background:#173d5a;color:#fff;padding:80px 0}.sg-close>.v4-wrap{display:grid;grid-template-columns:1.7fr 1fr;gap:90px;align-items:center}.sg-close h2{font-size:clamp(32px,3.5vw,49px);font-family:var(--display);line-height:1.15;letter-spacing:-.025em;margin-bottom:24px}.sg-close p{color:#ccdeeb;font-size:16px;max-width:650px;margin-bottom:28px}.sg-close .sg-text-link:hover{color:#9fd0f1}.sg-next{border:1px solid #66869f;padding:35px;display:grid;gap:24px}.sg-next span{font-size:12px;color:#d3e4ef;line-height:1.7}.sg-next strong{font-size:28px;line-height:1.25}.sg-next:hover{background:#204967}
@media(min-width:769px) and (max-width:1100px){.sg-toc .sg-other{display:none}.sg-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.sg-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.sg-hero-grid{gap:24px}.sg-hero-image img{height:330px}.sg-heading{gap:40px}.sg-split{gap:35px}.sg-orbit{width:210px;height:210px}.sg-j1,.sg-j3{left:70px}.sg-j2,.sg-j4{top:70px}.sg-close>.v4-wrap{gap:40px}}
@media(max-width:768px){.sg-hero{padding-top:28px}.sg-hero-grid{grid-template-columns:1fr;gap:28px;min-height:0;padding-bottom:26px}.sg-kicker{font-size:11px;margin-bottom:18px}.sg-hero h1{font-size:clamp(38px,8.4vw,62px)}.sg-lead{font-size:16px;margin:22px 0}.sg-hero-image img{height:285px}.sg-hero-image figcaption{font-size:11px}.sg-path{grid-template-columns:1fr 1fr}.sg-path a{padding:18px 10px;font-size:12px;border-bottom:1px solid #b8cbdb;gap:12px}.sg-path a:first-child{padding-left:10px}.sg-path a:nth-child(even){border-right:0}.sg-path a:nth-child(n+3){border-bottom:0}.sg-path span{font-size:15px}.sg-toc{top:66px}.sg-toc>.v4-wrap>div{gap:24px}.sg-toc a{padding:17px 0}.sg-toc .sg-other{display:none}.sg-section{padding:54px 0;scroll-margin-top:135px}.sg-heading{grid-template-columns:1fr;gap:20px;margin-bottom:28px}.sg-heading>p{font-size:15px}.sg-number{margin-bottom:12px}.sg-grid{gap:18px}.sg-grid-4,.sg-grid-3,.sg-grid-2{grid-template-columns:1fr}.sg-card{padding:25px}.sg-card h3,.sg-prose h3{font-size:22px}.sg-split{grid-template-columns:1fr;gap:30px}.sg-example{padding:25px}.sg-example h3{font-size:25px}.sg-note{font-size:12px}.sg-table table{font-size:13px;min-width:630px}.sg-table th,.sg-table td{padding:14px 16px}.sg-table caption{padding:15px 16px}.sg-specs summary{font-size:14px;padding:19px 44px 19px 18px}.sg-specs summary:after{right:18px;top:19px}.sg-equipment img{height:240px}.sg-materials img{height:220px}.sg-media-tiles{grid-template-columns:1fr 1fr;gap:14px}.sg-media-tiles .sg-card{padding:16px}.sg-media-tiles img{height:130px}.sg-media-tiles h3{font-size:17px}.sg-media-tiles p{font-size:12px}.sg-motion{padding:55px 35px 30px}.sg-orbit{width:210px;height:210px;margin-bottom:14px}.sg-j1,.sg-j3{left:70px}.sg-j2,.sg-j4{top:70px}.sg-callout{padding:23px;margin-top:25px}.sg-callout strong{font-size:18px}.sg-faq summary{font-size:16px;padding:21px 36px 21px 0}.sg-faq summary:after{top:21px;right:4px}.sg-faq p{font-size:15px}.sg-faq details>div{padding-right:10px}.sg-close{padding:54px 0}.sg-close>.v4-wrap{grid-template-columns:1fr;gap:32px}.sg-next{padding:25px}.sg-next strong{font-size:25px}.sg-close p{font-size:15px}.sg-actions{gap:12px 20px}.sg-text-link{font-size:13px}}

/* Match the existing header height at each breakpoint. */
@media(max-width:1200px){.sg-toc{top:82px}}
@media(max-width:990px){.sg-toc{top:76px}}
@media(max-width:768px){.sg-toc{top:75px}html:not(.js) .selection-topic .v4-header{position:relative}html:not(.js) .selection-topic .sg-toc{top:0}}