:root{--ink:#17181b;--muted:#59616d;--accent:#c2073f;--line:#e6e9ed;--soft:#f4f6f8;--radius:14px;color-scheme:light;font-family:'Sofia Sans',Arial,sans-serif;color:var(--ink);background:#fff;font-synthesis:none;scroll-behavior:smooth;scroll-padding-top:100px}
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@media(min-width:1440px){.shell{width:min(1280px,calc(100% - 96px))}.hero-story{grid-template-columns:1.22fr 1fr;gap:56px}.hero-copy h2{font-size:46px}.home-intro h1{font-size:56px}.card-grid{gap:34px}.card h3,.card h2{font-size:28px}}
@media(max-width:1050px){.header-row{gap:18px}.header-row nav{gap:20px;font-size:16px}.brand{width:165px}.search-link span{display:none}.hero-copy h2{font-size:34px}.hero-story{gap:28px}.hero-copy>p{font-size:18px}.home-intro h1{font-size:44px}.card-grid{gap:23px}.card h3,.card h2{font-size:24px}.reading-layout{grid-template-columns:210px minmax(0,1fr);gap:35px}.article-header h1{font-size:48px}.collection-feature h2{font-size:32px}}
@media(max-width:760px){.shell{width:calc(100% - 36px)}.header-row{min-height:76px;flex-wrap:wrap;gap:0;justify-content:space-between}.brand{width:160px}.header-row nav{order:3;width:100%;margin:0;justify-content:space-between;gap:12px;overflow:auto}.header-row nav a{padding:10px 0 12px;white-space:nowrap;font-size:15px}.search-link{padding:12px}.site-header{position:relative}.home-intro{padding:34px 0 26px;display:block}.home-intro h1{font-size:42px;letter-spacing:-1px}.home-intro>p{font-size:17px;margin-top:18px}.home-intro>p br{display:none}.home-intro>p{max-width:350px}.intro-kicker{font-size:14px}.hero-story{grid-template-columns:1fr;gap:20px}.hero-copy h2{font-size:35px;margin:10px 0 14px}.hero-copy>p{font-size:19px;max-width:none}.read-link{margin-top:18px}.photo{border-radius:10px}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px}.section-title{align-items:flex-start;gap:15px;margin-bottom:22px}.section-title h2{font-size:27px}.section-title>a{font-size:14px;white-space:normal;text-align:right}.section-title p{font-size:16px}.card h3,.card h2{font-size:23px}.card p{font-size:16px}.card .meta{flex-wrap:wrap;gap:4px 12px;font-size:12px}.card .photo-brand{width:78px;padding:2px 3px;bottom:8px;left:8px}.start-here,.topic-section,.collection-more{margin-top:44px}.question-band{grid-template-columns:1fr;padding:25px;gap:20px;margin-top:44px}.question-band h2{font-size:26px}.site-footer{margin-top:60px}.footer-top{grid-template-columns:1fr 1fr;gap:28px}.footer-top>div:first-child{grid-column:1/-1}.footer-bottom{flex-wrap:wrap;font-size:13px}.collection-header h1{font-size:45px}.collection-header>p:not(.category-label){font-size:19px}.collection-feature{grid-template-columns:1fr;gap:22px}.collection-feature h2{font-size:34px}.collection-feature p{font-size:19px}.topic-tabs{gap:8px}.topic-tabs a{font-size:14px;padding:8px 14px}.article-header h1{font-size:40px;letter-spacing:-.7px;line-height:1.1}.article-header{padding-top:0;margin-bottom:25px}.direct-answer{font-size:20px;line-height:1.55}.byline{gap:10px 18px;font-size:13px;margin-top:20px}.article-figure .cover{aspect-ratio:3/2}.article-figure .photo-brand{width:120px;left:15px;bottom:15px;padding:4px 6px}.reading-layout{display:block;margin-top:30px}.toc details{position:static;border:1px solid var(--line);padding:18px 20px;border-radius:10px;margin-bottom:35px}.toc summary{margin-bottom:0}.toc details[open] summary{margin-bottom:18px}.toc ol{gap:11px}.article-body{font-size:19px;line-height:1.7}.article-body h2{font-size:28px}.article-body section+section{margin-top:34px}.example{padding:20px;margin:22px 0}.example p{font-size:18px}.article-body h3{font-size:22px}.table-wrap table{font-size:16px}th,td{padding:13px 12px}.related{margin-top:54px}.breadcrumbs{margin-top:22px;margin-bottom:26px;font-size:13px}.info-page h1,.not-found h1{font-size:38px}.search-input button{padding:12px 18px}.search-input button svg{display:none}.search-page .collection-header h1{font-size:40px}}
@media(max-width:480px){.card-grid{grid-template-columns:1fr;gap:32px}.card h3,.card h2{font-size:27px}.card .meta{font-size:13px;gap:14px}.card .photo-brand{width:105px;left:12px;bottom:12px;padding:3px 5px}.card p{font-size:17px}.home-intro h1{font-size:40px}.hero-copy h2{font-size:33px}.article-header h1{font-size:36px}.header-row nav{gap:14px}.header-row nav a{font-size:14px}.section-title h2{font-size:26px}.footer-top nav{font-size:15px}.footer-bottom>span:nth-child(2){order:3;width:100%}.question-band{padding:24px 20px}.question-band input{font-size:16px;padding:13px}.article-actions{align-items:flex-start}.search-results{gap:32px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
@media print{.site-header,.site-footer,.toc,.related,.article-actions,.skip{display:none}.shell{width:100%}.article-header h1{font-size:30pt}.article-body{font-size:12pt}.reading-layout{display:block}.photo{max-height:300px}.article-body a{color:inherit}.example{break-inside:avoid}h2,h3{break-after:avoid}body{background:#fff}}
.source-trigger{display:inline;padding:0;border:0;background:none;color:inherit;font:inherit;line-height:inherit;text-align:left;text-decoration:underline dotted var(--accent);text-decoration-thickness:1.5px;text-underline-offset:4px;cursor:pointer}.source-trigger:hover,.source-trigger:focus-visible{color:var(--accent);text-decoration-style:solid}.source-panel{position:fixed;inset:auto;margin:0;width:min(350px,calc(100vw - 24px));max-height:calc(100dvh - 24px);overflow:auto;padding:20px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);box-shadow:0 12px 40px #17181b26;font-size:16px;line-height:1.45;text-align:left;overflow-wrap:anywhere}.source-panel:popover-open{display:grid;gap:8px}.source-panel .source-eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:1.2px;color:var(--accent);font-weight:700}.source-panel strong{font-size:18px;line-height:1.3}.source-panel .source-publisher{color:var(--muted);font-size:14px}.source-panel .source-checked{color:var(--muted);font-size:12px}.source-panel a{display:block;margin-top:4px;font-size:14px}.source-panel::backdrop{background:transparent}@media print{.source-panel[popover]{display:block;position:static;width:auto;max-height:none;box-shadow:none;border:0;padding:8px 0}.source-trigger{text-decoration:none}}

.source-panel .source-contribution{font-size:14px;line-height:1.55;color:#414953;margin-block:4px}

/* The reading column owns the summary and contents; only the sponsor sits beside it. */
.reading-layout{grid-template-columns:minmax(0,720px) 300px;column-gap:64px;row-gap:0}

.reading-layout>.article-body{grid-column:1;grid-row:1}
.toc details{position:static;margin:0;padding:22px;border:1px solid var(--line);border-radius:16px;background:#fafafb}
.toc summary{display:flex;justify-content:space-between;align-items:center;gap:12px;list-style:none;font-size:21px;line-height:1.3;margin:0}
.toc summary::-webkit-details-marker{display:none}
.toc summary small{display:block;margin-bottom:5px;font-size:10px;font-weight:700;letter-spacing:1.7px;text-transform:uppercase;color:var(--accent)}
.toc-toggle{display:grid;place-items:center;width:28px;height:28px;background:#fff;border:1px solid var(--line);border-radius:50%;font-size:20px;flex-shrink:0;transform:rotate(-90deg)}
.toc details[open] .toc-toggle{transform:rotate(180deg)}
.toc details[open] summary{margin-bottom:18px}
.toc ol{counter-reset:section;border:0;gap:5px}
.toc li a{display:grid;grid-template-columns:22px 1fr;gap:9px;margin:0;padding:10px 9px;border:1px solid transparent;border-radius:8px;font-size:15px;line-height:1.35;color:#505866}
.toc li a::before{counter-increment:section;content:counter(section,decimal-leading-zero);font-size:11px;font-weight:700;padding-top:3px;color:#8a919b;font-variant-numeric:tabular-nums}
.toc li a:hover,.toc li a[aria-current=true]{margin:0;border:1px solid #f1cedb;background:#fff0f5;color:#a80035}
.toc li a[aria-current=true]::before{color:var(--accent)}

.sponsor{grid-column:2;grid-row:1;align-self:start;position:sticky;top:110px;margin-top:0}
.sponsor>h2{font-size:10px;line-height:1.5;text-transform:uppercase;letter-spacing:1.5px;font-weight:600;color:#737b83;text-align:center;margin:0 0 12px}
.sponsor-card{overflow:hidden;border:1px solid #dbe5df;border-radius:16px;background:#f5f9f6}
.sponsor-brand{border-top:1px solid #dbe5df;background:#fff;padding:22px}
.sponsor-logo{display:block;width:218px;max-width:100%;height:auto;margin:0 auto}
.sponsor-stage{position:relative;overflow:hidden;isolation:isolate}
.sponsor-scene{background:#f5f9f6}
.sponsor-product-scene{background:#d5e4e8}
.sponsor-scene>img{display:block;width:100%;height:auto;aspect-ratio:1/1;object-fit:cover}
.sponsor-scene>.sponsor-product{object-fit:contain}
.sponsor-divider,.sponsor-handle{display:none}
.is-interactive .sponsor-stage{display:grid}
.is-interactive .sponsor-scene{grid-area:1/1}
.is-interactive .sponsor-girl-scene{clip-path:inset(0 calc(100% - var(--reveal)) 0 0)}
.is-interactive .sponsor-product-scene{clip-path:inset(0 0 0 var(--reveal))}
.is-interactive .sponsor-divider{display:block;position:absolute;inset-block:0;left:var(--reveal);width:4px;transform:translateX(-50%);background:#1e5745;box-shadow:0 0 0 2px #fff,0 0 14px #163e3966;pointer-events:none}
.is-interactive .sponsor-handle{position:absolute;top:50%;left:var(--reveal);transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;justify-content:center;width:60px;height:60px;border:3px solid #fff;border-radius:50%;background:#1e5745;color:#fff;box-shadow:0 3px 18px #163e3980;pointer-events:none}
.sponsor-handle b{font-size:30px;line-height:1;font-weight:500}
.sponsor-handle small{font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.6px}
.sponsor-range{position:absolute;top:50%;left:-30px;transform:translateY(-50%);width:calc(100% + 60px);height:60px;margin:0;opacity:0;appearance:none;cursor:ew-resize;touch-action:none}
.sponsor-range::-webkit-slider-thumb{appearance:none;width:60px;height:60px;background:transparent;pointer-events:auto;cursor:ew-resize;touch-action:none}
.sponsor-range::-moz-range-thumb{width:60px;height:60px;border:0;background:transparent;pointer-events:auto;cursor:ew-resize;touch-action:none}
.sponsor-stage:has(.sponsor-range:focus-visible){outline:3px solid #1e5745;outline-offset:-5px}
.sponsor-stage:has(.sponsor-range:focus-visible) .sponsor-handle{outline:3px solid #c2073f;outline-offset:3px}
.sponsor-copy{padding:22px 22px 24px;color:#173f32}
.is-interactive .sponsor-copy{min-height:185px}
.sponsor-copy p{font-size:22px;line-height:1.2;font-weight:650;letter-spacing:-.3px;margin:0 0 17px}
.sponsor-copy a{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;font-weight:700;text-decoration:underline;text-underline-offset:4px}
.sponsor-copy a:hover{color:#0c7251}
.sponsor-copy small{display:block;margin-top:9px;font-size:10px;color:#64786e}
.sponsor-controls{padding:16px 22px 18px;border-top:1px solid #dbe5df}
.sponsor-controls>p{font-size:11px;text-align:center;color:#64786e;margin:0 0 12px}
.sponsor-controls>div{display:flex;padding:3px;gap:3px;border:1px solid #dbe5df;border-radius:8px}
.sponsor-controls a{flex:1;min-width:0;padding:8px 2px;border-radius:5px;background:#fff;color:#1e5745;text-align:center;font-size:12px;font-weight:600;text-decoration:underline;text-underline-offset:3px}
.sponsor-controls a:hover,.sponsor-controls a:focus-visible{background:#1e5745;color:#fff}
@media(max-width:1100px) and (min-width:761px){.reading-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px}.toc details{padding:18px}.sponsor-copy p{font-size:21px}}
@media(max-width:760px){.reading-layout{display:flex;flex-direction:column;gap:0}.toc{order:0;margin-bottom:32px}.reading-layout>.article-body{order:1}.sponsor{order:2;position:static;width:min(100%,360px);align-self:center;margin-top:40px}.toc details{padding:20px}.toc ol{gap:4px}.toc li a{font-size:16px}.is-interactive .sponsor-copy{min-height:165px}}
@media print{.toc,.sponsor{display:none}.reading-layout{display:block}}

@media(max-height:800px){.sponsor{position:static}}

.info-page .info-lead{font-size:27px;line-height:1.35;font-weight:600;letter-spacing:-.35px;margin-bottom:24px}
.info-page .draft-note{padding:18px 22px;border-left:3px solid var(--accent);background:#faf6f8;font-size:16px;line-height:1.6}
.info-page .contact-email{font-size:23px;font-weight:600;overflow-wrap:anywhere}
.info-page .contact-hint{font-size:15px;color:var(--muted)}
.article-body .team-publications{list-style:none;padding:0;margin:15px 0 30px}
.team-publications li{padding:18px 0;border-bottom:1px solid var(--line)}
.team-publications li>a{font-weight:600;text-decoration:none}
.team-publications li>p{font-size:16px;line-height:1.5;color:var(--muted);margin:7px 0 0}
.article-actions .report-link{font-size:14px;text-underline-offset:3px}
.article-body .read-link{color:#fff}

.collection .collection-header{max-width:none}
.collection .collection-header>p{text-wrap:wrap}

.article-summary{padding:28px 30px;background:#faf5f7;border:1px solid #eddae1;border-left:4px solid var(--accent);border-radius:12px;margin-bottom:24px}
.summary-label{display:block;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.article-summary .direct-answer{font-size:21px;line-height:1.6;color:var(--ink);margin:0}
.article-body>.toc{margin:0 0 32px}
.article-body .toc ol{padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:4px 14px;list-style:none}
.article-body .toc li{padding:0;margin:0}
.article-body .toc a{color:var(--muted);text-decoration:none}
.article-body .toc a:hover,.article-body .toc a[aria-current=true]{color:var(--accent)}
.article-header>.article-figure .photo{max-height:none}
.article-header>.article-figure .cover{aspect-ratio:auto}
.article-graphic{margin:28px 0;padding:24px;border:1px solid #e0e5ea;border-radius:14px;background:#f7f9fb;break-inside:avoid}
.article-graphic figcaption{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:18px}
.article-graphic .graphic-note{font-size:14px;line-height:1.5;color:var(--muted);margin:16px 0 0}
.article-graphic .flow-steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr;gap:24px;counter-reset:step}
.flow-steps li{position:relative;margin:0;padding:18px;border:1px solid #dde3e9;border-radius:10px;background:#fff;line-height:1.45;font-size:16px}
.flow-steps li:before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;font-size:12px;letter-spacing:1px;color:var(--accent);font-weight:700;margin-bottom:8px}
.flow-steps li:not(:last-child):after{content:'↓';position:absolute;bottom:-24px;left:20px;color:var(--accent);font-size:20px}

.flow-steps strong{display:block;margin-bottom:6px;color:var(--ink)}
.article-graphic .anatomy{padding:0;margin:0;list-style:none;border:1px solid #d9dee5;border-radius:10px;overflow:hidden;background:#fff}
.anatomy li{display:grid;grid-template-columns:100px minmax(0,1fr);gap:16px;margin:0;padding:16px 18px;border-bottom:1px solid var(--line);font-size:17px;line-height:1.5}
.anatomy li:last-child{border-bottom:0}.anatomy strong{font-size:13px;color:var(--accent)}
.envelope{display:grid;grid-template-columns:1fr 1fr;gap:28px 16px;padding:22px;background:#fff;border:1px solid #c8cfd7;border-radius:8px;aspect-ratio:1.65;font-size:15px;line-height:1.5}
.envelope strong{display:block;color:var(--accent);font-size:13px;margin-bottom:5px}.envelope-stamp{justify-self:end;align-self:start;border:2px dashed #c8cfd7;padding:10px;font-size:12px;color:var(--muted)}.envelope-to{grid-column:2;align-self:end}.envelope-from{grid-column:1}
@media(max-width:760px){.article-summary{padding:22px}.article-summary .direct-answer{font-size:19px}.article-body .toc ol{grid-template-columns:1fr}.article-graphic{padding:18px}.article-graphic .flow-steps{grid-template-columns:1fr}.flow-steps li:nth-child(odd):after{content:'↓';bottom:-24px;left:20px;right:auto;transform:none}.anatomy li{grid-template-columns:1fr;gap:4px;padding:14px}.envelope{padding:14px;gap:20px 10px;font-size:12px}.envelope strong{font-size:11px}.envelope-stamp{font-size:10px;padding:7px}}
@media print{.article-summary,.article-graphic{border:1px solid #aaa;background:#fff}.article-body>.toc{display:none}}

.body-image{margin:28px 0 8px}.body-image img{width:100%;height:auto;border-radius:12px;aspect-ratio:3/2;object-fit:cover}.body-image figcaption{font-size:15px;line-height:1.5;color:var(--muted);margin-top:10px}.body-image figcaption span{display:block;margin-top:4px;font-size:12px}