:root{--rd-paper:#f8f9f5;--rd-white:#fff;--rd-ink:#20252d;--rd-blue:#2448df;--rd-muted:#58606b;--rd-line:#d6dad3;--rd-citrus:#e4ef70}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--rd-paper);color:var(--rd-ink);font-family:Arial,Helvetica,sans-serif;font-size:17px;line-height:1.6}a{color:var(--rd-blue);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid var(--rd-blue);outline-offset:5px}img{max-width:100%;height:auto}h1,h2,h3,h4{color:var(--rd-ink);font-family:Arial,Helvetica,sans-serif;line-height:1.08;letter-spacing:-.04em;font-weight:600}p{margin:0 0 1.2em}h1,h2,h3{margin:0 0 .65em}.rd-header{max-width:1320px;margin:auto;padding:25px 36px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--rd-line)}.rd-brand{display:flex;gap:12px;align-items:center;color:var(--rd-ink);text-decoration:none;font-size:16px;line-height:1.05;font-weight:700;letter-spacing:-.04em}.rd-mark{display:grid;place-items:center;width:49px;height:49px;background:var(--rd-blue);color:white;font-size:30px;letter-spacing:-5px;padding-right:5px}.rd-desktop-nav{display:flex;gap:28px;align-items:center}.rd-desktop-nav a{font-size:14px;color:var(--rd-ink);text-decoration:none}.rd-desktop-nav a:last-child{border:1px solid var(--rd-line);padding:9px 17px}.rd-mobile-nav{display:none}.rd-home-main{max-width:1248px;margin:0 auto;padding:0 36px}.rd-kicker,.rd-section-label,.rd-reading-links>a>span,.rd-tab{font:12px/1.5 Consolas,'Courier New',monospace;letter-spacing:.06em;text-transform:uppercase}.rd-kicker{color:var(--rd-blue);margin-bottom:23px}.rd-hero{padding:64px 0 52px}.rd-hero-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:70px;align-items:end}.rd-hero h1{font-size:62px;line-height:1.03;margin:0;letter-spacing:-.055em}.rd-hero h1 em{color:var(--rd-blue);font-style:normal}.rd-hero-note p{max-width:390px;font-size:17px;line-height:1.6;margin-bottom:22px}.rd-button{display:inline-flex;align-items:center;justify-content:space-between;gap:44px;background:var(--rd-blue);color:#fff;padding:14px 21px;text-decoration:none;font-size:15px;font-weight:600}.rd-button:hover{background:#1734b8;color:white}.rd-workbench{border:1px solid var(--rd-line);background:white}.rd-section-label{padding:13px 21px;display:flex;justify-content:space-between;gap:20px;color:var(--rd-muted);border-bottom:1px solid var(--rd-line)}.rd-workbench>img{display:block;width:100%}.rd-bench-copy{padding:35px;display:grid;grid-template-columns:1fr 1.2fr;gap:70px}.rd-bench-copy h2{font-size:32px;margin:0}.rd-bench-copy p{font-size:16px;margin:0}.rd-section{padding:78px 0;border-bottom:1px solid var(--rd-line)}.rd-section h2{font-size:43px}.rd-mapping{display:grid;grid-template-columns:1fr 1.35fr;gap:100px}.rd-notes{border-top:1px solid var(--rd-ink)}.rd-notes article{padding:24px 0 20px;border-bottom:1px solid var(--rd-line);display:grid;grid-template-columns:112px 1fr;gap:0 18px}.rd-tab{grid-row:span 2;color:var(--rd-blue);padding-top:4px}.rd-notes h3{font-size:24px;margin-bottom:12px}.rd-notes p{font-size:16px;margin:0}.rd-section-heading{display:flex;justify-content:space-between;gap:25px;align-items:center}.rd-section-heading>a{font-size:14px;white-space:nowrap}.rd-intro{max-width:730px;font-size:17px}.rd-reading-links{display:grid;grid-template-columns:1fr 1fr;margin-top:30px;border:1px solid var(--rd-line)}.rd-reading-links>a{position:relative;display:block;color:var(--rd-ink);text-decoration:none;padding:30px 55px 34px 30px;background:#fff}.rd-reading-links>a+a{border-left:1px solid 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summary{font-size:17px;line-height:1.4;padding:21px 30px 21px 35px;cursor:pointer;position:relative;list-style:none;font-weight:600}.rd-faq summary::-webkit-details-marker{display:none}.rd-faq summary>span{position:absolute;left:0;top:25px;font:11px Consolas,monospace;color:var(--rd-blue)}.rd-faq summary:after{content:'+';right:3px;position:absolute;color:var(--rd-blue);font-size:22px;top:17px}.rd-faq[open] summary:after{content:'−'}.rd-faq p{padding:0 30px 22px 35px;font-size:16px;margin:0;color:var(--rd-muted)}.rd-closing{position:relative;margin:64px 0;padding:46px;background:var(--rd-citrus);overflow:hidden}.rd-closing h2{font-size:46px;max-width:700px}.rd-closing>p:not(.rd-kicker){max-width:570px}.rd-closing .rd-kicker{color:var(--rd-ink)}.rd-small-links{display:flex;gap:25px;margin-top:24px;font-size:14px}.rd-footer{max-width:1320px;margin:auto;border-top:1px solid var(--rd-line);padding:40px 36px 25px;display:grid;grid-template-columns:1fr 1fr;gap:24px}.rd-footer-brand{color:var(--rd-ink);font-weight:700;text-decoration:none}.rd-footer p{font-size:13px;margin-top:10px;color:var(--rd-muted)}.rd-footer nav{display:flex;flex-wrap:wrap;gap:10px 24px;align-content:start}.rd-footer nav a{font-size:13px;color:var(--rd-ink)}.rd-footnote{grid-column:1/-1;padding-top:20px;border-top:1px solid var(--rd-line);font:11px Consolas,monospace!important}
/* Isolated inner-page skin: the outer main owns horizontal gutters. */
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@media(min-width:1300px){.rd-reading>.row{grid-template-columns:790px minmax(220px,1fr)}}
@media(max-width:1050px){.rd-hero-grid{gap:40px}.rd-hero h1{font-size:52px}.rd-mapping,.rd-checklist{gap:45px}.rd-faq-section{gap:35px}.rd-bench-copy{gap:35px}.rd-story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.rd-reading>.row{grid-template-columns:minmax(0,1fr)}.rd-reading .col-lg-4{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.rd-reading .col-lg-4>h2,.rd-reading .col-lg-4>h3{grid-column:1/-1}.rd-desktop-nav{gap:18px}}
@media(max-width:760px){.rd-header{padding:18px 20px}.rd-home-main{padding:0 20px}.rd-desktop-nav{display:none}.rd-mobile-nav{display:block;font-size:14px}.rd-mobile-nav summary{cursor:pointer;border:1px solid var(--rd-line);padding:8px 13px}.rd-mobile-menu{position:absolute;z-index:5;top:84px;left:20px;right:20px;background:white;border:1px solid var(--rd-line);box-shadow:0 15px 30px #20252d12;display:flex;flex-direction:column;padding:15px}.rd-mobile-menu a{padding:10px 12px;color:var(--rd-ink)}.rd-hero{padding:35px 0 32px}.rd-hero-grid{grid-template-columns:1fr;gap:23px}.rd-hero h1{font-size:38px;line-height:1.06}.rd-kicker{font-size:10px;margin-bottom:18px}.rd-hero-note p{font-size:16px}.rd-button{padding:12px 18px}.rd-section-label{font-size:9px;padding:11px 12px}.rd-section-label span:last-child{display:none}.rd-bench-copy{padding:24px 20px;grid-template-columns:1fr;gap:16px}.rd-bench-copy h2{font-size:27px}.rd-workbench>img{min-height:125px;object-fit:cover}.rd-section{padding:43px 0}.rd-section h2{font-size:34px}.rd-mapping,.rd-checklist,.rd-faq-section{grid-template-columns:1fr;gap:25px}.rd-notes article{grid-template-columns:1fr;padding:23px 0}.rd-tab{margin-bottom:15px;grid-row:auto}.rd-notes h3{font-size:24px}.rd-section-heading{display:block}.rd-section-heading>a{display:inline-block;margin-bottom:20px}.rd-reading-links{grid-template-columns:1fr}.rd-reading-links>a{padding:25px}.rd-reading-links>a+a{border-left:0;border-top:1px solid var(--rd-line)}.rd-reading-links h3{font-size:25px;padding-right:20px}.rd-closing{margin:35px 0;padding:27px 23px}.rd-closing h2{font-size:34px}.rd-small-links{flex-direction:column;gap:8px}.rd-footer{padding:30px 20px 20px;grid-template-columns:1fr}.rd-footer nav{gap:15px 22px}.rd-footer .rd-footnote{margin-top:0}.rd-faq summary{font-size:16px}.rd-faq p{padding-left:0;padding-right:0}.rd-faq-section>div>p{font-size:16px}main.container{width:calc(100% - 40px);margin-top:30px}.rd-story-grid{grid-template-columns:1fr}.rd-journal-head h1{font-size:36px}.rd-longform h1,main.container:not(:has(.rd-reading)):not(:has(.rd-journal)) h1{font-size:34px}.rd-longform h2{font-size:27px}.rd-longform .lead,.rd-longform p,.rd-longform li{font-size:17px}.rd-reading .col-lg-4{grid-template-columns:1fr}.rd-story-copy{padding:22px}.rd-reading>.row{gap:35px}.rd-longform ul,.rd-longform ol{padding-left:24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}