/* Restrained graphite, with the official mark as the only vivid accent. */
:root{--bg:#090b0d;--fg:#e9eaeb;--soft:#b9bec2;--muted:#91989e;--accent:#c2cbb5;--line:#ffffff16}
html{background:#090b0d}body{background:linear-gradient(118deg,#080a0c 0%,#0c0f11 60%,#111416 100%);background-attachment:fixed;color:var(--fg);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif}
header{background:#0a0c0ef5;border:0}header nav{gap:25px}footer{background:#101315f7;border-color:#ffffff16;box-shadow:none}footer #motion{color:#b6bcc1}dialog{background:#111517;border-color:#ffffff1c;box-shadow:0 24px 80px #0008}
body h1,body h2,body h3,.atlas-cover h1,.atlas-details h2,.study-copy h2{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;letter-spacing:-.035em;font-weight:500}
.atlas-cover h1{font-size:clamp(40px,4.7vw,72px);line-height:1.07}.hero-summary{max-width:380px;font-size:16px;line-height:1.65}.atlas-details .body-copy{font-size:15px;line-height:1.7;max-width:330px}
.eyebrow,.source-link,.source-note,.section-head>p,.part-label small,.film-caption>span{color:var(--muted)}.eyebrow{letter-spacing:0!important}.header-button{background:#ffffff04}.study-viewport{background:none}.study-viewport canvas{background:transparent}.part-label{background:#0b0e10de;border-color:#77808666;color:#cbd0d4}.part-labels path{stroke:#a1aab1}.study-toolbar button{background:#ffffff03;border-color:#ffffff24}.study-toolbar button:hover,.study-toolbar button[aria-pressed=true]{background:#ffffff08;border-color:#ffffff60}.study-range input{accent-color:#afb9a4}.study-parts button[aria-pressed=true]{background:#ffffff06;border-color:#ffffff30}.study-copy>p{max-width:390px;line-height:1.7}.study-copy .study-source{font-size:10px;margin-top:20px;color:#899298}.study-caption{min-height:82px}.study-caption p{font-size:12px}
.section-head>p{max-width:320px;line-height:1.65}.product-layout .section-intro{font-size:15px;line-height:1.7}.benefit-rows p,.nfpt-grid article>p,.selection-grid p{max-width:530px;font-size:15px;line-height:1.7}.film-note{font-size:12px;line-height:1.65;max-width:470px}.decision-table p{font-size:14px}.source-product,.material-photo,.certificate-preview,.document-sheet{background:#ffffff04}.source-link:hover{color:#fff}
.reading-detail{pointer-events:auto;grid-column:1/-1;max-width:850px;margin-top:26px;border-top:1px solid var(--line);color:var(--soft);font-size:13px;line-height:1.8}.reading-detail>summary{cursor:pointer;list-style:none;color:#a7afb5;padding:14px 0;width:fit-content;font-size:12px;transition:color .2s}.reading-detail>summary::-webkit-details-marker{display:none}.reading-detail>summary:after{content:'+';margin-left:18px;font-size:16px}.reading-detail[open]>summary:after{content:'−'}.reading-detail>summary:hover{color:#f0f2f3}.reading-body{padding:4px 0 16px}.reading-body p+p{margin-top:14px}.reading-detail:focus-within{border-color:#88939a}.intro-reading{margin-top:14px;max-height:21svh;overflow:auto}.intro-reading .reading-body{font-size:12px}.product-study .reading-detail{margin-top:12px}.library-link{display:block;margin-top:30px}
@media(max-width:1000px){header nav{gap:15px;font-size:11px}}
@media(max-width:760px){.atlas-cover h1{font-size:37px}.hero-summary{font-size:14px;max-width:320px}.atlas-details .body-copy{font-size:13px;max-width:340px}.study-copy h2{font-size:33px}.study-copy>p{font-size:14px}.product-study .reading-detail{order:8}.reading-detail{margin-top:20px;font-size:13px}.reading-detail>summary{min-height:44px;padding:13px 0}.intro-reading{max-height:14svh}.section-head>p{max-width:none}.study-copy .study-source{font-size:10px}.film-note{font-size:12px}}
@media print{.reading-detail .reading-body{display:block}.reading-detail>summary:after{display:none}}