@font-face {
  font-family: 'Saira';
  font-style: normal;
  font-weight: 400 800;
  font-stretch: 100%;
  font-display: swap;
  src: url(assets/guides/saira.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 400 700;
  font-stretch: 100%;
  font-display: swap;
  src: url(assets/guides/archivo.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root{--bg:#14171b;--surface:#1a1e23;--surface-up:#20262d;--deep:#101317;--blue:#005afc;--pale:#7fa8ff;--white:#fff;--text:#c1c8d1;--muted:#929ca9;--line:#ffffff12;--radius:14px;color-scheme:dark;font-family:Archivo,Arial,sans-serif;color:var(--white);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}html{scroll-behavior:smooth;scroll-padding-top:100px}body.modal-open{overflow:hidden}button,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer;color:inherit}button,a{-webkit-tap-highlight-color:transparent}button:disabled{opacity:.45;cursor:not-allowed}img{display:block;max-width:100%;height:auto}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--pale);outline-offset:5px}button{touch-action:manipulation}h1,h2,h3,h4,p,figure{margin:0}h1,h2,h3,h4,.button,.eyebrow{font-family:Saira,Arial,sans-serif}h1,h2,h3{font-weight:800}h1,h2{line-height:1.03;letter-spacing:-.025em}p{line-height:1.75}h1 span,h2 span{color:var(--pale)}.icon{width:20px;height:20px;display:inline-block;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linejoin:round;stroke-linecap:round;vertical-align:middle;flex-shrink:0}.container{width:min(1232px,calc(100% - 80px));margin:0 auto}.eyebrow{font-size:11px;letter-spacing:1.5px;line-height:1.5;font-weight:700;color:var(--pale);display:block}.small-line{width:24px;height:2px;background:var(--blue);display:inline-block;vertical-align:middle;margin-right:9px}.button{display:inline-flex;align-items:center;justify-content:center;gap:13px;min-height:48px;padding:13px 20px;border-radius:10px;border:1px solid transparent;font-size:15px;font-weight:700;line-height:1.25;transition:background .2s,border-color .2s,transform .2s}.button .icon{width:18px;height:18px}.button.primary{background:var(--blue);color:white}.button.primary:hover{background:#246fff;transform:translateY(-1px)}.button.secondary{background:#ffffff04;border-color:#ffffff26;color:white}.button.secondary:hover{background:#ffffff0a;border-color:var(--pale)}.button.small{font-size:14px;min-height:44px;padding:12px 18px}.button.wide{width:100%}.text-link{display:inline-flex;align-items:center;gap:11px;font-family:Saira,Arial,sans-serif;font-size:15px;font-weight:700;color:var(--white);background:none;border:0;padding:8px 0;min-height:40px;transition:color .2s}.text-link:hover{color:var(--pale)}.text-link>.icon{color:var(--pale);width:18px;height:18px}.icon-button{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:none;border:1px solid var(--line);border-radius:9px;color:var(--text)}.icon-button:hover{background:#ffffff08}.round-arrow{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:40px;height:40px;border-radius:50%;color:var(--pale);background:#7fa8ff0c;border:1px solid #7fa8ff38;transition:background .2s,color .2s}.round-arrow .icon{width:18px;height:18px}.skip-link{position:fixed;top:-70px;left:15px;background:var(--blue);padding:13px 18px;border-radius:6px;z-index:200}.skip-link:focus{top:10px}.site-header{position:sticky;top:0;z-index:40;background:#14171bf2;backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.header-inner{width:min(1360px,calc(100% - 80px));height:82px;margin:0 auto;display:flex;align-items:center;gap:40px}.brand{display:block;flex-shrink:0}.brand img{width:250px;height:auto}.desktop-nav{display:flex;justify-content:center;align-items:center;gap:26px;flex:1}.desktop-nav a{font-family:Saira,Arial,sans-serif;color:#b6bec9;font-size:14px;font-weight:600;white-space:nowrap;position:relative;line-height:2.2}.desktop-nav a:hover{color:white}.desktop-nav a[aria-current]{color:white}.desktop-nav a[aria-current]:after{content:'';position:absolute;left:0;right:0;bottom:-24px;height:2px;background:var(--blue)}.header-actions{display:flex;align-items:center;gap:12px}.menu-toggle{display:none}.mobile-menu{border-top:1px solid var(--line);padding:18px 24px;background:var(--deep)}.mobile-menu a{display:block;padding:14px 2px;border-bottom:1px solid var(--line);font:600 16px Saira,Arial,sans-serif}.hub-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.95fr);gap:80px;padding-top:48px;padding-bottom:43px;align-items:center}.hero-copy>.eyebrow{font-size:10px;margin-bottom:23px}.hero-copy h1{font-size:64px;line-height:1.02;letter-spacing:-1.3px}.desktop-break{display:none}.hero-copy>p{font-size:17px;max-width:470px;color:var(--text);margin-top:22px;line-height:1.75}.hero-copy>.text-link{margin-top:19px}.hero-trust{display:flex;gap:20px;margin-top:25px;color:#8b96a4;font-size:11px}.hero-trust span{display:flex;align-items:center;gap:6px}.hero-trust .icon{width:13px;height:13px;color:#7c91b4}.featured-guide{background:var(--surface);border:1px solid #ffffff0d;border-radius:var(--radius);overflow:hidden;display:block;transition:border-color .25s,transform .25s}.featured-guide:hover{border-color:#7fa8ff60;transform:translateY(-3px)}.featured-photo{height:221px;position:relative;overflow:hidden}.featured-photo>img{width:100%;height:100%;object-fit:cover;object-position:50% 48%;transition:transform .6s}.featured-guide:hover .featured-photo>img{transform:scale(1.025)}.featured-photo:after{content:'';position:absolute;inset:40% 0 0;background:linear-gradient(transparent,#0b141dd1)}.feature-chip{position:absolute;top:17px;left:18px;z-index:1;font:700 10px Saira,Arial,sans-serif;letter-spacing:1.2px;border-radius:5px;background:var(--blue);padding:7px 10px}.feature-location{position:absolute;bottom:13px;left:18px;z-index:1;display:flex;align-items:center;gap:6px;font-size:9px;color:#e4ebf5}.feature-location .icon{width:12px;height:12px}.featured-copy{padding:21px 25px 22px}.featured-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;color:#8393aa;font:600 9px Saira,Arial,sans-serif;letter-spacing:1px}.featured-meta>span{display:flex;align-items:center;gap:5px;font-family:Archivo,Arial,sans-serif;font-size:10px;letter-spacing:0;color:#97a4b5;white-space:nowrap}.featured-meta .icon{width:12px;height:12px}.featured-copy h2{font-size:29px;line-height:1.05;letter-spacing:-.35px;margin-top:13px}.featured-copy h2 span{color:white}.featured-bottom{display:flex;align-items:center;gap:22px;margin-top:16px}.featured-bottom p{font-size:12px;color:#a6b1bf;line-height:1.65;max-width:330px}.featured-bottom .round-arrow{margin-left:auto;width:34px;height:34px}.featured-guide:hover .round-arrow{color:white;background:var(--blue);border-color:var(--blue)}.intent-section{padding-top:4px;padding-bottom:52px}.section-overline{display:flex;justify-content:space-between;gap:20px;color:#8190a3;margin-bottom:13px;font:600 10px Saira,Arial,sans-serif;letter-spacing:1.2px}.section-overline>span:last-child{font-family:Archivo,Arial,sans-serif;letter-spacing:0;font-size:10px;font-weight:400;color:#8e9aaa}.intent-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid #ffffff14;border-radius:12px;overflow:hidden;background:#191d22}.intent-button{display:flex;align-items:center;gap:13px;text-align:left;background:none;border:0;border-right:1px solid #ffffff12;padding:20px 18px;min-height:92px;position:relative;transition:background .2s}.intent-button:last-child{border-right:0}.intent-button:hover{background:#ffffff04}.intent-button[aria-pressed=true]{background:#005afc17;box-shadow:inset 0 -2px var(--blue)}.intent-icon{color:var(--pale);background:#7fa8ff08;border:1px solid #7fa8ff13;width:37px;height:39px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.intent-icon .icon{width:21px;height:21px}.intent-button strong{display:block;font:700 16px/1.3 Saira,Arial,sans-serif}.intent-button small{display:block;font-size:10px;font-weight:400;color:#8e9aaa;margin-top:6px;line-height:1.4}.intent-button>.icon{width:14px;height:14px;margin-left:auto;color:#65768e;align-self:flex-start;margin-top:3px}.library-section{border-top:1px solid var(--line);padding-top:48px;padding-bottom:52px;scroll-margin-top:108px}.library-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:25px;margin-bottom:26px}.library-heading .eyebrow{font-size:10px;color:#8295b3;letter-spacing:1.35px;margin-bottom:11px}.library-heading h2{font-size:44px;line-height:1.05;letter-spacing:-.8px}.library-heading>p{font-size:13px;line-height:1.8;color:#94a0b0;margin-bottom:3px}.library-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-bottom:17px;border-bottom:1px solid var(--line)}.filter-tabs{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.filter-tab{display:flex;align-items:center;gap:8px;border:1px solid transparent;border-radius:7px;background:none;color:#96a3b5;font:600 13px Saira,Arial,sans-serif;padding:9px 13px;min-height:39px;transition:background .2s,color .2s}.filter-tab:hover{color:white;background:#ffffff04}.filter-tab.active{border-color:#7fa8ff25;background:#7fa8ff0b;color:#bed2f6}.filter-tab span{background:#7fa8ff10;color:#92b7fa;font-size:10px;border-radius:4px;padding:2px 5px}.guide-search{display:flex;align-items:center;gap:8px;background:#ffffff03;border:1px solid #ffffff12;border-radius:8px;padding:0 12px}.guide-search .icon{width:15px;height:15px;color:#7d8ba0}.guide-search input{background:none;border:0;outline:0;color:white;font-size:12px;width:153px;min-height:38px}.guide-search input::placeholder{color:#7f8a99}.results-line{display:flex;align-items:center;justify-content:space-between;min-height:53px;gap:15px}.results-line p{font-size:11px;color:#8593a7}.results-line .text-link{font-size:12px;min-height:30px}.results-line .text-link .icon{width:13px;height:13px}.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}.guide-card{display:flex;flex-direction:column;min-width:0;border:1px solid #ffffff0d;border-radius:12px;overflow:hidden;background:var(--surface);transition:transform .25s,border-color .25s}.guide-card:hover{transform:translateY(-4px);border-color:#7fa8ff54}.card-photo{position:relative;height:178px;overflow:hidden;background:#222a35}.card-photo>img{width:100%;height:100%;object-fit:cover;transition:transform .55s}.guide-card:hover .card-photo>img{transform:scale(1.035)}.card-photo:after{content:'';position:absolute;inset:55% 0 0;background:linear-gradient(transparent,#0e1829b3)}.photo-location{position:absolute;left:16px;bottom:12px;display:flex;gap:5px;align-items:center;font-size:9px;color:#e0e7f1;z-index:1}.photo-location .icon{width:11px;height:11px}.interactive-label{position:absolute;right:12px;top:12px;z-index:1;background:var(--blue);display:flex;align-items:center;gap:5px;border-radius:5px;padding:6px 8px;font:700 8px Saira,Arial,sans-serif;letter-spacing:.7px}.interactive-label .icon{width:11px;height:11px}.card-copy{padding:20px 22px 19px;display:flex;flex-direction:column;flex:1}.card-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:9px;color:#8593a8;line-height:1.5}.card-meta>span:first-child{font-family:Saira,Arial,sans-serif;color:#87a5d3;font-size:10px;font-weight:600}.card-meta>span:last-child{display:flex;gap:4px;align-items:center;white-space:nowrap}.card-meta .icon{width:11px;height:11px}.card-copy h3{font-size:24px;line-height:1.12;letter-spacing:-.25px;text-transform:uppercase;margin-top:12px;max-width:320px}.card-copy p{font-size:13px;line-height:1.75;color:#a9b3c1;margin-top:11px;max-width:330px}.card-bottom{border-top:1px solid #ffffff0b;margin-top:auto;padding-top:15px;display:flex;align-items:center;justify-content:space-between;font:600 12px Saira,Arial,sans-serif;color:#cbd7e9}.card-copy p+.card-bottom{margin-top:22px}.card-bottom .icon{width:16px;height:16px;color:#7fa8ff}.guide-card:hover .card-bottom{color:white}.empty-results{text-align:center;padding:70px 20px;border:1px dashed #ffffff20;border-radius:12px;background:#ffffff02}.empty-results>.icon{color:var(--pale);width:28px;height:28px;margin-bottom:16px}.empty-results h3{font-size:27px}.empty-results p{font-size:14px;color:var(--muted);margin:9px 0 23px}.explorer-feature{display:grid;grid-template-columns:.85fr 1.15fr;min-height:400px;margin-top:10px;margin-bottom:57px;overflow:hidden;border:1px solid #7fa8ff1c;border-radius:16px;background:#171d25}.explorer-feature-copy{padding:43px 42px;position:relative;z-index:1}.explorer-feature-copy .eyebrow{font-size:10px}.explorer-feature h2{font-size:43px;line-height:1.04;margin-top:15px}.explorer-feature-copy p{font-size:14px;line-height:1.8;color:#a3afc0;max-width:340px;margin-top:18px}.explorer-feature-copy .button{margin-top:23px}.feature-footnote{display:block;font-size:9px;color:#6e819e;margin-top:14px;line-height:1.6}.explorer-feature-visual{position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 40%,#22334a55,transparent 70%);border-left:1px solid #7fa8ff10;display:flex;flex-direction:column}.diagram-kicker{position:absolute;top:28px;left:30px;font:600 8px Saira,Arial,sans-serif;letter-spacing:1.5px;color:#6d88ac;z-index:1}.explorer-feature-visual .roof-illustration{margin:auto -20px;height:370px}.explorer-feature-visual .roof-svg{height:100%;width:100%}.visual-bottom{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:0 27px 23px;color:#99acca;font-size:11px}.visual-bottom>span:first-child{display:flex;gap:8px;align-items:center}.visual-bottom .icon{width:16px;height:16px}.homeowner-note{display:flex;align-items:center;gap:28px;padding:37px 0 55px}.note-mark{font:800 85px/1 Saira,Arial,sans-serif;color:#005afc;align-self:flex-start;margin-top:-4px}.homeowner-note h2{font-size:24px;line-height:1.25;letter-spacing:-.1px}.homeowner-note h2 span{color:#8c9eb7}.homeowner-note p{font-size:12px;color:#8a98ad;margin-top:11px}.homeowner-note>.text-link{margin-left:auto;white-space:nowrap;font-size:13px}.end-cta{border-top:1px solid #7fa8ff1f;border-bottom:1px solid #7fa8ff1a;background:#171d26;padding:48px 0}.end-cta-inner{display:flex;justify-content:space-between;align-items:center;gap:60px}.end-cta h2{font-size:43px;margin-top:14px;line-height:1.07}.end-cta p{max-width:590px;font-size:14px;color:#a4b1c4;margin-top:18px;line-height:1.8}.end-cta-action{display:flex;align-items:center;flex-direction:column;gap:15px;min-width:235px}.end-cta-action>.button{width:100%;min-height:51px}.phone-link{font-family:Saira,Arial,sans-serif;display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:#c6d3e7;min-height:30px}.phone-link .icon{height:14px;width:14px;color:var(--pale)}.end-cta-action>span{font-size:9px;color:#798ba7}.site-footer{background:#101317;border-top:1px solid #ffffff07;padding-top:38px}.footer-top{display:grid;grid-template-columns:1fr 1fr 1fr;gap:40px;align-items:center;padding-bottom:33px}.footer-logo img{width:235px}.footer-top>p{font:500 15px/1.6 Saira,Arial,sans-serif;color:#98a4b6;justify-self:center}.footer-top>div{justify-self:end}.footer-top .eyebrow{font-size:9px;color:#7c8da8}.footer-phone{font:700 25px/1.4 Saira,Arial,sans-serif;margin-top:6px;display:block}.footer-links{padding:21px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:35px}.footer-links>div{display:flex;flex-wrap:wrap;gap:23px}.footer-links a{font:500 12px Saira,Arial,sans-serif;color:#8d9aad}.footer-links a:hover{color:white}.footer-bottom{display:flex;justify-content:space-between;gap:20px;color:#586a81;font-size:9px;padding:20px 0 24px;line-height:1.7}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,15px);background:#24344f;border:1px solid #7fa8ff50;border-radius:9px;color:white;font-size:12px;padding:13px 20px;box-shadow:0 8px 30px #0005;max-width:calc(100vw - 32px);z-index:100;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.visible{opacity:1;transform:translate(-50%,0)}
/* Reading experience */
.breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font:600 12px Saira,Arial,sans-serif;color:#6d7c92;padding:26px 0 25px}.breadcrumbs a{color:#95a3b6}.breadcrumbs a:hover{color:white}.breadcrumbs [aria-current]{color:#83a8e8}.guide-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.94fr);gap:60px;align-items:center;padding-bottom:48px}.guide-hero-grid h1{font-size:50px;line-height:1.03;text-transform:uppercase;margin-top:16px;letter-spacing:-.7px}.short-answer{padding:20px 23px;border:1px solid #ffffff09;border-left:2px solid var(--blue);background:var(--surface);border-radius:0 11px 11px 0;margin-top:24px}.short-answer .eyebrow{font-size:9px;letter-spacing:1px}.short-answer p{font-size:15px;line-height:1.8;color:#bbc5d3;margin-top:11px}.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:13px;font:500 11px Saira,Arial,sans-serif;color:#8797ad;margin-top:19px;line-height:1.7}.article-meta>span{display:flex;align-items:center;gap:5px}.article-meta .icon{height:12px;width:12px}.guide-hero-photo{align-self:center}.guide-hero-photo>img{width:100%;aspect-ratio:1.42;object-fit:cover;border-radius:13px}.guide-hero-photo>figcaption{font-size:11px;color:#8293ab;display:flex;align-items:center;gap:5px;margin-top:12px;line-height:1.6}.guide-hero-photo figcaption .icon{width:12px;height:12px}.parts-intro{display:grid;grid-template-columns:1.3fr 1fr;gap:80px;align-items:end;padding:10px 0 31px}.parts-intro h1{font-size:52px;line-height:1.03;margin-top:13px}.parts-intro-copy{padding-bottom:4px}.parts-intro-copy p{color:#aab7c9;font-size:16px;line-height:1.85;max-width:430px}.parts-intro-copy>span{display:flex;align-items:center;gap:8px;font:600 11px Saira,Arial,sans-serif;color:#7796c3;margin-top:17px}.parts-intro-copy .icon{width:16px;height:16px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:80px;border-top:1px solid var(--line);padding-top:38px;margin-top:6px}.article-content{min-width:0;max-width:790px}.article-content .article-section{margin:0 0 38px;padding:0 0 34px;border-bottom:1px solid #ffffff0d;scroll-margin-top:112px}.article-content h2{font-size:34px;text-transform:uppercase;line-height:1.13;letter-spacing:-.3px;margin-bottom:19px}.article-content h3{font-size:21px;line-height:1.3;margin-bottom:8px;font-weight:700}.article-content p{font-size:16px;line-height:1.85;color:#b6c0ce;margin:13px 0 18px;text-wrap:pretty}.article-content p a,.article-content li a{color:#a4c2f5;text-decoration:underline;text-underline-offset:3px;text-decoration-color:#7fa8ff55}.article-content p a:hover{color:white}.article-content .definition-list{list-style:none;margin:20px 0;padding:0}.definition-list>.definition-item{display:grid;grid-template-columns:35px minmax(0,1fr);gap:14px;border-top:1px solid #ffffff12;padding:23px 0}.definition-list .list-number{color:#6d9fec;font:700 18px/1.5 Saira,Arial,sans-serif}.definition-list p{margin:0;font-size:15px;line-height:1.85}.body-list{list-style:none;padding:0;margin:20px 0}.body-list>li{display:block;position:relative;padding:13px 0 13px 24px;font-size:15px;line-height:1.8;color:#b6c0ce;border-bottom:1px solid #ffffff09}.body-list>li:before{content:'•';position:absolute;left:4px;color:#7fa8ff}.body-list .list-number{display:none}.source-callout{border:1px solid #ffffff10;border-left:2px solid #005afc;border-radius:0 11px 11px 0;padding:22px;margin:24px 0;background:#1a2028;color:#b9c6d8;font-size:15px;line-height:1.8}.source-callout>div:first-child:not(.source-grid){font:600 16px Saira,Arial,sans-serif;color:#a7c3ef;margin-bottom:12px}.source-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr));gap:12px 20px;padding:13px 0;border-bottom:1px solid #ffffff0c;align-items:start;font-size:15px;line-height:1.7}.source-grid>span:first-child{color:#e2e8ef;font-family:Saira,Arial,sans-serif;font-weight:600}.source-grid>span:last-child{color:#a4b4c9}.source-grid>div{padding:4px 0;min-width:0}.source-grid>div>div{margin-bottom:6px}.source-grid strong{color:white}.article-content table{border-collapse:collapse;width:100%;margin:20px 0;color:#b9c6d9}.article-content td,.article-content th{padding:15px;border:1px solid #ffffff14;text-align:left}.article-rail{position:sticky;top:108px;align-self:start;padding-top:0}.guide-toc{border:1px solid #ffffff10;border-radius:11px;background:#191e25;padding:20px 19px}.guide-toc>.eyebrow{font-size:10px;margin-bottom:15px}.guide-toc>a{display:flex;align-items:baseline;gap:10px;padding:10px 0;font:500 13px/1.55 Saira,Arial,sans-serif;color:#8f9fb6;transition:color .2s}.guide-toc>a>span{font-size:10px;color:#526d95;min-width:15px}.guide-toc>a.active{color:#d3e4ff}.guide-toc>a.active>span{color:#7fa8ff}.guide-toc>a:hover{color:white}.rail-inspection{padding:24px 4px 0}.rail-inspection .eyebrow{font-size:8px;letter-spacing:1.1px;color:#6f89af}.rail-inspection h3{font-size:24px;line-height:1.1;margin-top:13px}.rail-inspection p{font-size:12px;color:#91a1b7;line-height:1.8;margin-top:12px}.rail-inspection .button{font-size:12px;min-height:43px;margin-top:18px;padding:12px 10px;gap:8px}.rail-inspection .button .icon{width:14px;height:14px}.rail-inspection>a:last-child{display:block;text-align:center;font:500 13px Saira,Arial,sans-serif;color:#95abca;margin-top:14px;padding:7px}.mobile-jump{display:none}.source-citations{border:1px solid #ffffff0e;background:#11161c;border-radius:10px;padding:19px 22px;margin:25px 0 40px}.source-citations>.eyebrow{font-size:9px;color:#8397b5}.source-citations ul{padding-left:18px;font-size:12px;line-height:1.9;color:#91a7c8}.source-citations a{color:#a6bfe4}.source-citations p{font-size:11px;margin:10px 0 0;color:#6f839f;line-height:1.8}.faq-section>.eyebrow{font-size:10px;margin-bottom:12px}.faq-section h2{font-size:31px;margin-bottom:24px}.faq-item{border-top:1px solid #ffffff15}.faq-item:last-child{border-bottom:1px solid #ffffff15}.faq-item summary{display:flex;justify-content:space-between;align-items:center;gap:20px;list-style:none;cursor:pointer;font:600 17px/1.6 Saira,Arial,sans-serif;padding:19px 0}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary>span{font-size:23px;color:var(--pale);font-weight:400;transition:transform .2s}.faq-item[open] summary>span{transform:rotate(45deg)}.faq-item>div{padding:0 20px 12px 0}.faq-item p{font-size:15px;line-height:1.85;margin-top:0}.related-section{padding-top:9px;margin-bottom:55px}.related-section .library-heading h2{font-size:35px}.related-section .library-heading>.text-link{font-size:13px;white-space:nowrap}.compact-card .card-photo{height:148px}.compact-card .card-copy h3{font-size:23px}.compact-card .card-copy p{font-size:12px}.house-comparison{border:1px solid #7fa8ff24;background:#19212c;border-radius:12px;overflow:hidden;padding:25px;margin-bottom:38px}.house-comparison .eyebrow{font-size:9px}.house-comparison h3{font-size:25px;margin-top:12px;line-height:1.15}.house-comparison p{font-size:14px;margin:12px 0 0}.house-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px;border-top:1px solid #7fa8ff16;margin-top:22px;padding-top:8px}.house-pair>div{text-align:center}.house-pair svg{width:100%;max-height:140px}.house-pair strong{display:block;font:600 15px Saira,Arial,sans-serif;margin-top:3px}.house-pair span{display:block;font-size:11px;color:#8c9fb9;line-height:1.7;margin-top:7px}.reading-progress{position:fixed;top:81px;left:0;height:2px;background:var(--blue);width:0;z-index:41;pointer-events:none}
/* Roof anatomy explorer */
.interactive-section{margin:17px 0 42px;scroll-margin-top:105px}.explorer-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin:0 0 20px}.explorer-section-heading>.eyebrow{font-size:9px}.explorer-section-heading h2{font-size:35px;line-height:1.08;margin-top:10px}.explorer-section-heading h2 br{display:none}.explorer-section-heading h2 span{margin-left:8px}.explorer-section-heading>p{font-size:12px;line-height:1.8;color:#7e92b0;margin-bottom:3px}.explorer-shell{display:grid;grid-template-columns:minmax(0,1fr) 330px;border:1px solid #7fa8ff23;border-radius:15px;overflow:hidden;background:#171d25}.explorer-stage{background:radial-gradient(ellipse at 50% 42%,#293a5052,transparent 70%);min-width:0;position:relative}.explorer-topline{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:20px 23px 0}.explorer-topline>span{display:flex;align-items:center;gap:7px;font:600 8px Saira,Arial,sans-serif;letter-spacing:1px;color:#7d92af}.explorer-topline>span>.icon{width:13px;height:13px}.view-toggle{display:flex;gap:2px;border:1px solid #ffffff12;background:#0c121ba3;padding:3px;border-radius:7px}.view-toggle button{font:500 10px Saira,Arial,sans-serif;color:#7a8eab;border:0;border-radius:4px;background:none;padding:7px 9px;min-height:30px;white-space:nowrap}.view-toggle button.active{background:#2940658c;color:#d4e4ff}.roof-illustration{position:relative;min-width:0}.roof-svg{width:100%;height:auto;display:block;overflow:visible}.explorer-stage>.roof-illustration{height:415px;margin:0 12px}.explorer-stage>.roof-illustration>.roof-svg{width:100%;height:100%}.roof-layer,.roof-hotspot{transform:translateY(var(--explode));transition:transform .65s cubic-bezier(.22,.75,.25,1),opacity .25s}.assembled .roof-layer,.assembled .roof-hotspot{transform:translateY(var(--assembled))}.assembled .assembly-guides{opacity:0}.assembly-guides{transition:opacity .3s}.roof-layer.is-muted{opacity:.65}.roof-layer.selected{opacity:1}.roof-hotspot{cursor:pointer}.roof-hotspot:focus-visible{outline:none}.roof-hotspot .hotspot-disc{transition:fill .2s,stroke .2s;stroke-width:1.4}.roof-hotspot .hotspot-halo{transition:opacity .2s}.roof-hotspot.selected .hotspot-disc,.roof-hotspot:hover .hotspot-disc,.roof-hotspot:focus-visible .hotspot-disc{fill:var(--blue);stroke:#b5d0ff;stroke-width:2}.roof-hotspot.selected .hotspot-halo,.roof-hotspot:focus-visible .hotspot-halo{opacity:.15}.decorative-roof{pointer-events:none}.decorative-roof .roof-hotspot{display:none}.decorative-roof .roof-layer{opacity:1}.illustration-caption{font-size:9px;display:flex;align-items:center;justify-content:center;gap:5px;color:#647d9f;padding:0 16px 14px;line-height:1.6;text-align:center}.illustration-caption .icon{width:12px;height:12px}.part-selector{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #7fa8ff12;padding:12px;gap:6px;background:#10161d66}.part-button{display:flex;align-items:center;gap:7px;text-align:left;border:1px solid transparent;background:none;padding:10px 9px;min-height:44px;border-radius:6px;font:500 10px/1.45 Saira,Arial,sans-serif;color:#8399b8}.part-button>span{font:600 9px Saira,Arial,sans-serif;color:#4f74ab}.part-button:hover{color:#c8d9f0;background:#ffffff05}.part-button.active{color:#d6e6ff;border-color:#7fa8ff2a;background:#005afc15}.part-button.active>span{color:var(--pale)}.component-detail{border-left:1px solid #7fa8ff1a;background:#1a222e;display:flex;flex-direction:column;padding:24px}.component-counter{display:flex;align-items:center;justify-content:space-between;gap:10px;font:600 9px Saira,Arial,sans-serif;letter-spacing:1px;color:#7895bf}.component-counter>span:last-child{font-size:10px;color:#526e96}.component-detail .component-kicker{font:500 12px Saira,Arial,sans-serif;color:#7fa8ff;margin-top:25px}.component-detail h3{font-size:31px;line-height:1.04;text-transform:uppercase;letter-spacing:-.4px;margin-top:6px}.component-description{font-size:13px;color:#aebed3;line-height:1.85;margin-top:17px}.component-where{display:flex;align-items:flex-start;gap:8px;border-top:1px solid #7fa8ff18;margin-top:19px;padding-top:15px;font-size:11px;line-height:1.8;color:#8099bb}.component-where>.icon{width:15px;height:15px;color:#6f91c3;margin-top:3px}.component-question{background:#101b2c70;border:1px solid #7fa8ff12;border-radius:9px;padding:13px 14px;margin-top:19px}.component-question>span{font:600 8px Saira,Arial,sans-serif;letter-spacing:1px;color:#5878a9;display:block;margin-bottom:5px}.component-question p{font-size:11px;color:#9eb7d9;line-height:1.8}.component-detail .detail-action{margin-top:13px;min-height:35px;color:#adc9f4;font-size:11px}.component-photo{margin-top:20px;border-radius:8px;overflow:hidden;height:101px;position:relative;border:1px solid #ffffff0d}.component-photo>img{width:100%;height:100%;object-fit:cover}.component-photo:after{content:'';position:absolute;inset:50% 0 0;background:linear-gradient(transparent,#0c1525cc)}.component-photo span{position:absolute;bottom:8px;left:10px;color:#c9d8ee;font-size:8px;z-index:1}.component-paging{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:20px}.component-paging>span{font:500 9px Saira,Arial,sans-serif;color:#6f89b0}.component-paging>div{display:flex;gap:5px}.component-paging .icon-button{width:32px;height:32px;border-color:#7fa8ff20;min-height:32px}.component-paging .icon{width:14px;height:14px}.detail-modal{width:min(740px,calc(100vw - 32px));max-height:calc(100dvh - 40px);border:1px solid #7fa8ff33;border-radius:15px;padding:0;color:white;background:#18202b;box-shadow:0 25px 100px #0007;overflow:auto}.detail-modal::backdrop{background:#060c14b0;backdrop-filter:blur(5px)}.modal-head{padding:24px 27px 19px;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;border-bottom:1px solid #ffffff10}.modal-head h2{font-size:26px;margin-top:9px;line-height:1.12}.modal-head .eyebrow{font-size:9px}.modal-body{padding:22px 27px}.eave-diagram{width:100%;height:auto;background:#111a26;border-radius:11px;border:1px solid #ffffff0c;display:block}.modal-body>p{font-size:12px;color:#96accb;line-height:1.9;margin-top:19px}.modal-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:17px 27px;border-top:1px solid #ffffff0f;background:#111a2655}.modal-footer .button{font-size:12px}.modal-footer .text-link{font-size:12px}
@media(min-width:1600px){.container{width:min(1320px,calc(100% - 112px))}.hub-hero{gap:100px;padding-top:57px}.hero-copy h1{font-size:71px}.featured-photo{height:247px}.featured-copy h2{font-size:33px}.card-photo{height:198px}.explorer-stage>.roof-illustration{height:450px}.explorer-shell{grid-template-columns:minmax(0,1fr) 350px}}
@media(max-width:1190px){.header-inner{gap:24px}.brand img{width:215px}.desktop-nav{gap:18px}.desktop-nav a{font-size:12px}.header-actions .button{font-size:12px;padding:12px 14px}.container,.header-inner{width:calc(100% - 64px)}.hub-hero{gap:45px}.hero-copy h1{font-size:58px}.hero-copy>p{font-size:16px}.featured-photo{height:205px}.featured-copy{padding:19px 21px}.featured-copy h2{font-size:27px}.featured-bottom p{font-size:11px}.hero-trust{font-size:10px;gap:13px}.intent-button{gap:10px;padding:18px 13px}.intent-button strong{font-size:14px}.intent-button small{font-size:9px}.intent-icon{width:32px;height:35px}.intent-button>.icon{display:none}.guide-grid{gap:19px}.card-copy{padding:18px 18px}.card-copy h3{font-size:22px}.card-copy p{font-size:12px}.card-meta>span:last-child{font-size:8px}.card-meta>span:first-child{font-size:9px}.explorer-feature-copy{padding:35px 32px}.explorer-feature h2{font-size:39px}.homeowner-note h2{font-size:21px}.end-cta h2{font-size:37px}.parts-intro{gap:45px}.parts-intro h1{font-size:45px}.parts-intro-copy p{font-size:15px}.explorer-shell{grid-template-columns:minmax(0,1fr) 295px}.explorer-topline{padding:17px 16px 0;gap:10px}.explorer-topline>span{font-size:7px;letter-spacing:.7px}.explorer-stage>.roof-illustration{height:350px;margin:0 4px}.component-detail{padding:21px}.component-detail h3{font-size:28px}.component-detail .component-kicker{margin-top:21px}.component-description{font-size:12px}.part-button{font-size:9px;padding:9px 6px;gap:5px}.part-selector{padding:9px;gap:3px}.article-layout{gap:45px;grid-template-columns:minmax(0,1fr) 250px}.guide-hero-grid{gap:40px}.guide-hero-grid h1{font-size:44px}.short-answer p{font-size:14px}.article-meta{font-size:10px}.guide-hero-photo>figcaption{font-size:10px}.article-content h2{font-size:30px}.footer-logo img{width:215px}}
@media(max-width:980px){.desktop-nav{display:none}.header-inner{justify-content:space-between}.menu-toggle{display:flex}.header-inner{height:76px}.brand img{width:235px}.header-actions .button{font-size:13px}.hub-hero{gap:30px;padding-top:38px}.hero-copy h1{font-size:48px}.hero-copy>.eyebrow{font-size:8px}.hero-copy>p{font-size:14px}.hero-trust{flex-direction:column;gap:8px;margin-top:18px}.featured-photo{height:190px}.featured-copy h2{font-size:24px}.featured-meta{font-size:8px}.featured-meta>span{font-size:9px}.featured-bottom p{font-size:11px}.featured-copy{padding:17px 18px}.featured-bottom .round-arrow{width:30px;height:30px}.intent-grid{grid-template-columns:repeat(2,1fr)}.intent-button:nth-child(2){border-right:0}.intent-button:nth-child(1),.intent-button:nth-child(2){border-bottom:1px solid #ffffff12}.intent-button{padding:18px;min-height:82px}.intent-button strong{font-size:16px}.intent-button small{font-size:10px}.intent-icon{width:35px;height:37px}.intent-button>.icon{display:block}.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.card-copy h3{font-size:25px}.card-copy p{font-size:13px}.card-meta>span:first-child{font-size:10px}.card-meta>span:last-child{font-size:9px}.library-heading h2{font-size:40px}.library-heading>p{font-size:12px}.library-toolbar{align-items:flex-start}.filter-tabs{gap:3px}.filter-tab{font-size:12px;padding:9px 10px}.guide-search input{width:125px}.explorer-feature{grid-template-columns:1fr 1fr;min-height:365px}.explorer-feature-copy{padding:32px 25px}.explorer-feature h2{font-size:33px}.explorer-feature-copy p{font-size:12px}.explorer-feature-visual .roof-illustration{height:290px}.explorer-feature-copy .button{font-size:13px}.diagram-kicker{font-size:7px;left:20px}.visual-bottom{padding:0 18px 20px;font-size:10px}.feature-footnote{font-size:8px}.homeowner-note{gap:20px;flex-wrap:wrap}.homeowner-note>.text-link{margin-left:55px;margin-top:-12px}.homeowner-note h2{font-size:23px}.note-mark{font-size:70px}.end-cta-inner{gap:35px}.end-cta h2{font-size:32px}.end-cta p{font-size:13px}.end-cta-action{min-width:213px}.end-cta-action .button{font-size:13px}.end-cta .eyebrow{font-size:9px}.footer-top{gap:25px}.footer-top>p{font-size:13px}.footer-phone{font-size:22px}.footer-logo img{width:200px}.footer-links{gap:20px}.footer-links>div{gap:16px}.footer-links a{font-size:11px}.parts-intro{grid-template-columns:1.4fr 1fr;gap:30px}.parts-intro h1{font-size:39px}.parts-intro-copy p{font-size:13px}.parts-intro-copy>span{font-size:9px}.explorer-section-heading h2{font-size:29px}.explorer-section-heading>p{font-size:10px}.explorer-section-heading h2 br{display:block}.explorer-section-heading h2 span{margin-left:0}.explorer-shell{grid-template-columns:minmax(0,1fr) 260px}.explorer-stage>.roof-illustration{height:300px}.explorer-topline{flex-wrap:wrap;gap:8px}.view-toggle{margin-left:auto}.component-detail{padding:18px}.component-detail h3{font-size:25px}.component-description{font-size:11px}.component-question p{font-size:10px}.component-question{padding:11px}.component-where{font-size:10px}.component-detail .component-kicker{margin-top:18px;font-size:10px}.component-photo{height:80px}.part-selector{grid-template-columns:repeat(2,1fr)}.part-button{font-size:10px}.article-layout{grid-template-columns:minmax(0,1fr) 225px;gap:35px}.guide-hero-grid{gap:30px}.guide-hero-grid h1{font-size:38px}.short-answer{padding:17px 19px;margin-top:19px}.short-answer p{font-size:13px}.guide-toc{padding:17px}.guide-toc>a{font-size:12px}.rail-inspection h3{font-size:22px}.article-content p{font-size:15px}.article-content h2{font-size:28px}.related-section .guide-grid>.guide-card:nth-child(3){display:none}.reading-progress{top:75px}}
@media(max-width:700px){html{scroll-padding-top:87px}.container,.header-inner{width:calc(100% - 40px)}.header-inner{height:69px;gap:12px}.brand img{width:185px}.header-actions{gap:8px}.header-actions .button{font-size:10px;min-height:39px;padding:10px 11px;gap:5px;border-radius:8px}.header-actions .button .icon{width:12px;height:12px}.menu-toggle{width:36px;height:39px;min-width:36px;border-color:#ffffff16}.menu-toggle .icon{width:19px;height:19px}.hub-hero{grid-template-columns:1fr;gap:27px;padding-top:32px;padding-bottom:30px}.hero-copy>.eyebrow{font-size:8px;letter-spacing:1.1px;margin-bottom:17px}.hero-copy h1{font-size:46px;line-height:1.02;letter-spacing:-.7px}.desktop-break{display:none}.hero-copy>p{font-size:15px;line-height:1.8;max-width:470px;margin-top:18px}.hero-copy>.text-link{margin-top:12px;font-size:14px}.hero-trust{flex-direction:row;flex-wrap:wrap;font-size:9px;margin-top:17px;gap:13px}.hero-trust .icon{width:12px;height:12px}.featured-guide{border-radius:12px}.featured-photo{height:194px}.featured-copy{padding:19px 20px}.featured-copy h2{font-size:29px}.featured-meta{font-size:8px;letter-spacing:.8px}.featured-meta>span{font-size:9px}.featured-bottom{margin-top:13px;gap:16px}.featured-bottom p{font-size:12px;line-height:1.75}.featured-bottom .round-arrow{width:35px;height:35px}.feature-chip{font-size:9px;top:14px;left:15px}.feature-location{font-size:8px;left:15px}.intent-section{padding-bottom:32px;padding-top:0}.section-overline{font-size:9px;margin-bottom:12px;letter-spacing:.8px}.section-overline>span:last-child{display:none}.intent-grid{border-radius:10px}.intent-button{padding:15px 12px;gap:8px;min-height:96px;align-items:flex-start;flex-direction:column}.intent-icon{width:28px;height:28px;background:none;border:0;border-radius:0;justify-content:flex-start;margin-bottom:2px}.intent-icon .icon{width:21px;height:21px}.intent-button strong{font-size:15px;line-height:1.35}.intent-button small{font-size:9px;line-height:1.6;margin-top:3px}.intent-button>.icon{position:absolute;top:17px;right:11px;margin:0;width:12px;height:12px}.library-section{padding-top:30px;padding-bottom:34px;scroll-margin-top:85px}.library-heading{gap:15px;margin-bottom:20px}.library-heading .eyebrow{font-size:8px;letter-spacing:1.1px;margin-bottom:10px}.library-heading h2{font-size:37px}.library-heading>p{display:none}.library-toolbar{flex-direction:column;gap:13px;align-items:stretch;padding-bottom:13px}.filter-tabs{gap:3px;flex-wrap:nowrap;justify-content:space-between}.filter-tab{padding:8px 7px;font-size:10px;min-height:38px;gap:5px;white-space:nowrap}.filter-tab span{font-size:8px;padding:2px 4px}.guide-search{padding:0 12px}.guide-search input{width:100%;min-height:43px;font-size:16px}.guide-search .icon{width:16px;height:16px}.results-line{min-height:48px}.results-line p{font-size:10px;line-height:1.7}.results-line .text-link{font-size:10px;gap:5px}.guide-grid{grid-template-columns:1fr;gap:18px}.card-photo{height:188px}.card-copy{padding:19px 20px}.card-meta>span:first-child{font-size:11px}.card-meta>span:last-child{font-size:10px}.card-copy h3{font-size:26px;line-height:1.12;margin-top:12px;max-width:100%}.card-copy p{font-size:14px;line-height:1.75;margin-top:10px}.card-copy p+.card-bottom{margin-top:19px}.card-bottom{font-size:13px;padding-top:13px;min-height:40px}.card-bottom .icon{height:16px;width:16px}.photo-location{font-size:10px;left:15px;bottom:12px}.interactive-label{font-size:8px}.explorer-feature{grid-template-columns:1fr;margin-top:0;margin-bottom:32px;border-radius:12px}.explorer-feature-copy{padding:28px 25px}.explorer-feature h2{font-size:37px}.explorer-feature h2 br:nth-child(2){display:none}.explorer-feature-copy .eyebrow{font-size:9px}.explorer-feature-copy p{font-size:14px;max-width:100%;margin-top:17px}.explorer-feature-copy .button{min-height:47px;font-size:14px;margin-top:20px}.feature-footnote{font-size:9px}.explorer-feature-visual{border-left:0;border-top:1px solid #7fa8ff12}.diagram-kicker{top:19px;left:23px;font-size:7px}.explorer-feature-visual .roof-illustration{height:280px;margin:0 -8px}.visual-bottom{font-size:11px;padding:0 22px 20px}.homeowner-note{padding:20px 0 35px;gap:12px}.note-mark{font-size:62px}.homeowner-note>div{flex:1}.homeowner-note h2{font-size:20px;line-height:1.25}.homeowner-note p{font-size:11px;line-height:1.8;margin-top:11px}.homeowner-note>.text-link{margin-left:40px;font-size:12px;margin-top:-5px}.end-cta{padding:34px 0}.end-cta-inner{flex-direction:column;align-items:stretch;gap:26px}.end-cta .eyebrow{font-size:9px}.end-cta h2{font-size:33px;line-height:1.07;margin-top:12px}.end-cta p{font-size:14px;line-height:1.8;margin-top:16px}.end-cta-action{align-items:flex-start;gap:13px}.end-cta-action .button{width:auto;min-height:49px;min-width:220px;font-size:14px}.end-cta-action .phone-link{font-size:13px;min-height:32px}.end-cta-action>span{font-size:9px}.site-footer{padding-top:30px}.footer-top{grid-template-columns:1fr;gap:20px;padding-bottom:26px}.footer-top>p{justify-self:start;font-size:14px}.footer-top>p>br{display:none}.footer-top>div{justify-self:start}.footer-top .eyebrow{font-size:8px}.footer-logo img{width:220px}.footer-phone{font-size:25px}.footer-links{flex-direction:column;gap:20px;padding:22px 0}.footer-links>div{gap:13px 22px}.footer-links a{font-size:12px;padding:4px 0;min-height:28px}.footer-bottom{flex-direction:column;gap:7px;padding:19px 0 26px;font-size:9px}.breadcrumbs{font-size:10px;gap:7px;padding:21px 0}.guide-hero-grid{grid-template-columns:1fr;gap:25px;padding-bottom:30px}.guide-hero-grid>.eyebrow,.guide-hero-grid>div>.eyebrow{font-size:9px}.guide-hero-grid h1{font-size:38px;line-height:1.04;margin-top:13px;letter-spacing:-.5px}.short-answer{padding:18px 19px;margin-top:20px}.short-answer .eyebrow{font-size:9px}.short-answer p{font-size:15px;line-height:1.85;margin-top:11px}.article-meta{font-size:10px;gap:7px 13px;margin-top:17px}.guide-hero-photo>img{aspect-ratio:1.5;border-radius:10px}.guide-hero-photo>figcaption{font-size:10px;line-height:1.8;margin-top:9px}.article-layout{display:block;padding-top:25px;margin-top:0}.article-rail{display:none}.article-content{max-width:none}.article-content h2{font-size:28px;line-height:1.1;margin-bottom:18px}.article-content p{font-size:16px;line-height:1.9;margin:13px 0 19px}.article-content .article-section{margin-bottom:29px;padding-bottom:26px;scroll-margin-top:139px}.article-content h3{font-size:21px}.definition-list>.definition-item{padding:20px 0;grid-template-columns:27px 1fr;gap:10px}.definition-list .list-number{font-size:17px}.definition-list p{font-size:15px;line-height:1.9;margin:0}.body-list>li{font-size:15px;line-height:1.85;padding-left:20px}.source-callout{padding:18px;margin:21px 0;font-size:14px}.source-grid{font-size:14px;gap:5px 14px;padding:12px 0;grid-template-columns:1fr}.source-grid>span:first-child{font-size:15px}.source-grid>div{font-size:14px}.source-citations{padding:16px 18px;margin-bottom:30px}.source-citations p{font-size:11px}.mobile-jump{display:block;border:1px solid #ffffff13;border-radius:9px;background:#1a2028;margin:0 0 23px;position:sticky;top:79px;z-index:25;box-shadow:0 4px 20px #0002}.mobile-jump>summary{display:flex;align-items:center;gap:9px;padding:13px 14px;font:600 13px Saira,Arial,sans-serif;list-style:none;cursor:pointer;min-height:46px}.mobile-jump>summary::-webkit-details-marker{display:none}.mobile-jump>summary>.icon:first-child{width:15px;height:15px;color:var(--pale)}.mobile-jump>summary>.icon:last-child{margin-left:auto;width:14px;height:14px;color:#6f8db8}.mobile-jump>nav{padding:0 14px 12px;max-height:50dvh;overflow:auto}.mobile-jump>nav>a{display:block;font:500 13px/1.6 Saira,Arial,sans-serif;color:#acbfdc;padding:12px 0;border-top:1px solid #ffffff0d}.faq-section h2{font-size:27px}.faq-item summary{font-size:17px;line-height:1.55;padding:17px 0}.faq-item p{font-size:15px}.related-section{margin-bottom:35px}.related-section .library-heading{align-items:flex-start;flex-direction:column;gap:8px}.related-section .library-heading h2{font-size:31px}.related-section .library-heading>.text-link{font-size:12px}.related-section .guide-grid>.guide-card:nth-child(3){display:flex}.compact-card .card-photo{height:169px}.compact-card .card-copy h3{font-size:25px}.compact-card .card-copy p{font-size:13px}.parts-intro{grid-template-columns:1fr;gap:20px;padding:4px 0 25px}.parts-intro h1{font-size:39px;line-height:1.04;margin-top:12px}.parts-intro>.eyebrow,.parts-intro>div>.eyebrow{font-size:9px}.parts-intro-copy p{font-size:15px;line-height:1.8;max-width:100%}.parts-intro-copy>span{font-size:10px;margin-top:12px}.interactive-section{margin:7px 0 29px;scroll-margin-top:82px}.explorer-section-heading{align-items:flex-start;gap:14px;margin-bottom:16px}.explorer-section-heading .eyebrow{font-size:7px;letter-spacing:1px}.explorer-section-heading h2{font-size:28px;line-height:1.06;margin-top:9px}.explorer-section-heading h2 br{display:block}.explorer-section-heading>p{display:none}.explorer-shell{grid-template-columns:1fr;border-radius:12px}.explorer-topline{padding:15px 14px 0;gap:10px;flex-wrap:wrap}.explorer-topline>span{font-size:7px;letter-spacing:.55px}.explorer-topline>span>.icon{width:12px;height:12px}.view-toggle{margin-left:auto}.view-toggle button{font-size:10px;min-height:34px;padding:8px 9px}.explorer-stage>.roof-illustration{height:283px;margin:0 -5px}.illustration-caption{font-size:8px;padding:0 12px 14px;line-height:1.7;gap:5px}.illustration-caption .icon{width:11px;min-width:11px}.part-selector{grid-template-columns:repeat(2,1fr);padding:10px;gap:4px}.part-button{min-height:44px;font-size:12px;padding:10px 8px;gap:8px}.part-button>span{font-size:10px}.component-detail{border-left:0;border-top:1px solid #7fa8ff20;padding:24px}.component-counter{font-size:9px}.component-detail .component-kicker{font-size:12px;margin-top:21px}.component-detail h3{font-size:33px;margin-top:6px}.component-description{font-size:15px;line-height:1.85;margin-top:16px}.component-where{font-size:12px;margin-top:18px;padding-top:15px}.component-question{padding:14px 15px;margin-top:18px}.component-question>span{font-size:9px}.component-question p{font-size:13px;line-height:1.85}.component-detail .detail-action{font-size:13px;min-height:44px;margin-top:10px}.component-photo{height:135px;margin-top:18px}.component-photo span{font-size:10px}.component-paging{padding-top:20px}.component-paging>span{font-size:11px}.component-paging .icon-button{min-width:44px;min-height:44px}.component-paging .icon{height:17px;width:17px}.house-comparison{padding:19px;margin-bottom:28px}.house-comparison .eyebrow{font-size:8px}.house-comparison h3{font-size:23px;line-height:1.15}.house-comparison p{font-size:14px;line-height:1.8}.house-pair{gap:15px}.house-pair strong{font-size:13px}.house-pair span{font-size:10px;line-height:1.75}.reading-progress{top:68px}.detail-modal{width:calc(100vw - 24px);max-height:calc(100dvh - 24px);border-radius:12px}.modal-head{padding:20px}.modal-head h2{font-size:24px}.modal-body{padding:18px 20px}.modal-body>p{font-size:13px;line-height:1.85}.modal-footer{padding:15px 20px;flex-wrap:wrap}.modal-footer .button{font-size:12px;min-height:44px}.modal-footer .text-link{font-size:12px}.eave-diagram{border-radius:8px}.toast{font-size:11px;width:max-content;text-align:center;line-height:1.8}}
@media(max-width:370px){.container,.header-inner{width:calc(100% - 32px)}.brand img{width:163px}.header-actions{gap:6px}.header-actions .button{font-size:9px;padding:10px 8px}.header-actions .button .icon{display:none}.hero-copy h1{font-size:41px}.featured-copy h2{font-size:27px}.filter-tab{font-size:9px;padding:8px 5px}.filter-tab span{font-size:7px}.featured-meta{font-size:7px}.view-toggle{margin-left:0}.explorer-topline{padding-left:12px;padding-right:12px}.parts-intro h1{font-size:35px}.part-button{font-size:11px}.component-detail{padding:20px}.end-cta h2{font-size:30px}.footer-phone{font-size:24px}}
.hub-hero{grid-template-areas:"copy feature" "intent intent";row-gap:32px}.hub-hero>.hero-copy{grid-area:copy}.hub-hero>.featured-guide{grid-area:feature}.hub-hero>.intent-section{grid-area:intent;width:100%;padding:0}
@media(max-width:700px){.menu-toggle{width:44px;min-width:44px;min-height:44px}.header-actions .button{min-height:44px}.hub-hero{grid-template-areas:"copy" "intent" "feature";row-gap:27px;padding-bottom:32px}.hero-copy h1{font-size:42px}}
@media(max-width:370px){.brand img{width:145px}.hero-copy h1{font-size:36px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}[hidden]{display:none!important}


/* EH additions (not in the reference) */
html.ehr-hdr.ehr-hide .site-header{transform:none!important;opacity:1!important;pointer-events:auto!important}
html.ehr-hdr.ehr-glass .site-header{background-color:#14171bf2!important;-webkit-backdrop-filter:blur(18px)!important;backdrop-filter:blur(18px)!important}
.article-content a:not(.button){color:var(--pale);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-content a:not(.button):hover{color:#fff}
.article-figure{margin:22px 0 28px}
.article-figure img,.article-figure video{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;background:var(--deep)}
.article-figure figcaption{margin-top:10px;font-size:13px;line-height:1.6;color:var(--muted);text-wrap:pretty}
.article-content .article-links{list-style:none;margin:18px 0;padding:0;border-top:1px solid #ffffff12}
.article-content .article-links a{display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:52px;border-bottom:1px solid #ffffff12;font:700 15px Saira,Arial,sans-serif;color:#fff;text-decoration:none}
.article-content .article-links a:hover{color:var(--pale)}
.article-actions{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 6px}
.body-list.is-x .list-number{color:#8b96a4}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table-scroll table{min-width:520px}
.article-content p.table-note{font-size:14px;line-height:1.6;color:var(--muted);margin-top:-6px}
.source-callout p{margin:0 0 4px}
.hero-trust{flex-wrap:wrap}
.footer-links{flex-wrap:wrap}
.footer-links>div{display:flex;flex-wrap:wrap;gap:10px 26px}
.footer-bottom{font-size:12px;color:#8b96a4}
.guide-hero-photo img{width:100%;aspect-ratio:16/11;object-fit:cover}
.article-content>.short-answer{margin:0 0 40px}
/* legibility floor (the reference drops to 7-10px at tablet/phone widths) */
@media(max-width:1190px){.card-meta>span:first-child,.card-meta>span:last-child{font-size:11px}.hero-trust{font-size:12px}.featured-bottom p{font-size:13px}.intent-button small{font-size:11px}}
@media(max-width:700px){.filter-tabs{overflow-x:auto;scrollbar-width:none;justify-content:flex-start}.filter-tabs::-webkit-scrollbar{display:none}.filter-tab{font-size:12px;padding:8px 10px;flex:none}.filter-tab span{font-size:10px}.featured-meta{font-size:11px}}