:root{--char:#23272B;--char2:#33383d;--zinc:#D9DEE1;--panel:#F2F4F5;--red:#C62D1F;--rain:#129BC9;--ink:#1b1f22;--text:#2c3236;--mute:#646c72;--white:#fff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--white);color:var(--text);font:400 18px/1.6 "Overpass",system-ui,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--red)}
h1,h2,h3{font-family:"Space Grotesk",system-ui,sans-serif;font-weight:700;color:var(--char);line-height:1.1;letter-spacing:-.01em;margin:0}
.rg-mono{font-family:"Space Mono",ui-monospace,monospace}
.rg-skip{position:absolute;left:-999px}.rg-skip:focus{left:12px;top:12px;background:#fff;padding:8px;z-index:9}
.rg-wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.rg-kick{font:700 12.5px/1.2 "Space Mono";letter-spacing:.08em;text-transform:uppercase;color:var(--red);margin:0 0 10px}
/* header: brand bar over a dark nav */
.rg-brand{background:var(--white);border-bottom:1px solid var(--zinc)}
.rg-brow{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.rg-logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--char);font:700 24px/1 "Space Grotesk"}
.rg-logo i{font-style:normal;color:var(--red)}
.rg-logo small{display:block;font:400 12.5px/1.3 "Overpass";color:var(--mute);margin-top:5px;max-width:34ch}
.rg-logo svg{width:44px;height:34px;flex:none}.rg-logo svg path{fill:none;stroke:var(--char);stroke-width:4}.rg-logo svg rect{fill:var(--red)}
.rg-cbtn{background:var(--red);color:#fff;text-decoration:none;font:700 15px/1 "Space Grotesk";padding:13px 16px;border-radius:4px;white-space:nowrap}
.rg-nav{background:var(--char)}
.rg-nrow{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.rg-nrow::-webkit-scrollbar{display:none}
.rg-nav a{color:#fff;text-decoration:none;font:600 15px/1 "Space Grotesk";padding:14px 14px;white-space:nowrap;border-bottom:3px solid transparent}
.rg-nav a:hover,.rg-nav a.rg-on{border-bottom-color:var(--red)}
.rg-nav a.rg-price{margin-left:auto;color:var(--zinc);font-family:"Space Mono";font-size:13.5px}
@media (max-width:760px){.rg-brow{flex-direction:column;align-items:flex-start}.rg-cbtn{align-self:stretch;text-align:center}.rg-nav a.rg-price{margin-left:0}}
/* home */
.rg-home{padding-top:28px;padding-bottom:80px}
.rg-hhero{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.rg-hhero h1{font-size:clamp(34px,4.6vw,54px)}
.rg-htx p{font-size:19px;margin:14px 0 22px;max-width:46ch}
.rg-go{display:inline-block;background:var(--char);color:#fff;text-decoration:none;font:700 16px/1 "Space Grotesk";padding:15px 18px;border-radius:4px}
.rg-hhero figure{margin:0}.rg-hhero img{border-radius:8px;aspect-ratio:16/10;object-fit:cover}
.rg-hhero figcaption,.rg-pic figcaption{font-size:12.5px;color:var(--mute);margin-top:6px}
@media (max-width:860px){.rg-hhero{grid-template-columns:1fr}}
.rg-sh{font-size:clamp(25px,3vw,32px);margin:52px 0 16px}
.rg-bars{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.rg-bar{display:block;text-decoration:none;background:var(--panel);border-top:4px solid var(--red);border-radius:4px;padding:16px}
.rg-bar b{display:block;font:700 18px/1.2 "Space Grotesk";color:var(--char)}.rg-bar span{display:block;margin-top:8px;color:var(--ink);font-size:15px}
.rg-bar:hover{background:var(--zinc)}
@media (max-width:860px){.rg-bars{grid-template-columns:1fr 1fr}}
.rg-parts{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.rg-part{text-decoration:none;display:block;border:1px solid var(--zinc);border-radius:6px;overflow:hidden}
.rg-part figure{margin:0;aspect-ratio:16/10;overflow:hidden}.rg-part img{width:100%;height:100%;object-fit:cover}
.rg-part b{display:block;padding:12px 14px;font:700 18px "Space Grotesk";color:var(--char)}
@media (max-width:860px){.rg-parts{grid-template-columns:1fr 1fr}}
/* signature: gutter check */
.rg-check{margin:46px 0 0;background:var(--char);color:#e6e9eb;border-radius:8px;padding:26px}
.rg-check .rg-kick{color:#ff7a6c}
.rg-ch{color:#fff;font-size:clamp(26px,3.4vw,36px)}
.rg-ctop p{max-width:66ch;margin:10px 0 0}
.rg-cgrid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:20px;align-items:center}
.rg-cin label{display:block;font:700 16px "Space Grotesk";color:#fff;margin-bottom:18px}
.rg-cin label span{float:right;color:var(--zinc)}
.rg-cin input{width:100%;margin-top:10px;accent-color:var(--red)}
.rg-cout{background:#fff;border-radius:6px;padding:16px;color:var(--ink)}
.rg-gsvg{width:100%;height:auto}
.rg-gsvg .rg-cbg{fill:#fff}.rg-gsvg .rg-gline{fill:none;stroke:var(--char);stroke-width:3}
.rg-gsvg .rg-fill{fill:var(--rain);transition:y .4s,height .4s}.rg-gsvg .rg-fill.rg-bad{fill:var(--red)}
.rg-res{font-size:17px;font-weight:700;margin:10px 0 4px;color:#13703a}.rg-res.rg-bad{color:var(--red)}
.rg-sub{font-size:15px;margin:0;color:var(--mute)}
.rg-check .rg-note{font-size:13.5px;color:#b9c0c5;margin:16px 0 0}
@media (max-width:760px){.rg-cgrid{grid-template-columns:1fr}.rg-check{padding:18px}}
/* guide pages */
.rg-pg{max-width:860px;padding-top:26px;padding-bottom:80px}
.rg-chip{display:inline-block;background:var(--panel);border:1px solid var(--zinc);color:var(--char);font:700 12.5px/1 "Space Mono";text-transform:uppercase;letter-spacing:.06em;padding:7px 10px;border-radius:99px}
.rg-pg > h1{font-size:clamp(32px,4.6vw,50px);margin:14px 0 10px}
.rg-meta{font-size:14px;color:var(--mute);margin:0 0 18px}
.rg-pic{margin:0 0 22px}.rg-pic img{border-radius:10px;aspect-ratio:16/9;object-fit:cover;width:100%}
.rg-ans{border-left:6px solid var(--red);background:var(--panel);padding:14px 18px;border-radius:0 6px 6px 0;margin:0 0 18px}
.rg-ans p{margin:0;font-size:19.5px;font-weight:600;color:var(--ink)}
.rg-ing{border:1px solid var(--zinc);border-radius:6px;padding:12px 16px;margin:0 0 10px}
.rg-ing b{display:block;font:700 13px "Space Mono";text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}
.rg-ing a{display:block;color:var(--char);text-decoration:none;padding:4px 0;border-top:1px solid var(--panel)}
.rg-ing a:hover{color:var(--red)}
.rg-body h2{font-size:clamp(24px,3vw,30px);margin:42px 0 12px;scroll-margin-top:16px}
.rg-body h3{font-size:21px;margin:26px 0 8px}
.rg-body p,.rg-body li{max-width:68ch}
.rg-body ol{counter-reset:s;list-style:none;padding:0}
.rg-body ol > li{counter-increment:s;position:relative;padding:4px 0 10px 70px}
.rg-body ol > li::before{content:"Step " counter(s);position:absolute;left:0;top:6px;font:700 11px/1 "Space Mono";color:#fff;background:var(--char);padding:5px 6px;border-radius:3px}
.rg-body .rg-pic{margin:24px 0}
.rg-warn{border:2px solid var(--red);border-radius:6px;padding:12px 16px;margin:20px 0}
.rg-warn b{display:block;font:700 13px "Space Mono";text-transform:uppercase;color:var(--red)}
.rg-tw{overflow-x:auto;margin:18px 0}
table{border-collapse:collapse;width:100%;font-size:16px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--zinc);vertical-align:top}
thead th{background:var(--char);color:#fff;font:700 13px "Space Mono";text-transform:uppercase;letter-spacing:.04em}
tbody th{color:var(--char)}
td.rg-n{font-family:"Space Mono";font-size:15px;white-space:nowrap;color:var(--ink)}
.rg-dwg{margin:24px 0;border:1px solid var(--zinc);border-radius:6px;padding:14px;background:#fff}
.rg-dwg svg{width:100%;height:auto}
.rg-dwg figcaption{font-size:13.5px;color:var(--mute);margin-top:6px}
.rg-dwg .rg-ln{fill:none;stroke:var(--char);stroke-width:3}.rg-dwg .rg-wt{fill:var(--rain);opacity:.85}.rg-dwg .rg-dim{stroke:var(--red);stroke-width:1.5}.rg-dwg .rg-tx{font:400 12px "Space Mono";fill:var(--ink)}
.rg-calc{background:var(--panel);border-radius:6px;padding:18px;margin:20px 0}
.rg-calc label{display:block;font:700 15px "Space Grotesk";margin:10px 0 4px}
.rg-calc input{width:100%;padding:10px;font:400 17px "Space Mono";border:1px solid var(--zinc);border-radius:4px}
.rg-calc .rg-out{font:700 22px "Space Mono";color:var(--char);margin:14px 0 0}
.rg-note{font-size:14px;color:var(--mute)}
.rg-faq details{border-bottom:1px solid var(--zinc);padding:12px 0}
.rg-faq summary{cursor:pointer;font:700 19px/1.3 "Space Grotesk";color:var(--char);list-style:none;display:flex;justify-content:space-between;gap:12px}
.rg-faq summary::-webkit-details-marker{display:none}
.rg-faq summary::after{content:"+";color:var(--red);font-size:24px;line-height:1}.rg-faq details[open] summary::after{content:"\2212"}
.rg-faq details p{margin:8px 0 0}
.rg-sources{margin-top:46px;padding-top:14px;border-top:3px solid var(--char)}
.rg-sources h2{font:700 13px "Space Mono";text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px}
.rg-sources ol{padding-left:20px;font-size:15px}.rg-sources ol > li{padding:0;margin:4px 0}.rg-sources ol > li::before{display:none}
/* footer */
.rg-foot{background:var(--char);color:#c9ced2}
.rg-fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px;padding:44px 0 20px}
.rg-fl{font:700 22px "Space Grotesk";color:#fff;margin:0}
.rg-fgrid p{font-size:14.5px;max-width:46ch}
.rg-foot nav h2{font:700 12.5px "Space Mono";text-transform:uppercase;letter-spacing:.08em;color:#ff7a6c;margin:6px 0 10px}
.rg-foot nav a{display:block;color:#fff;text-decoration:none;font-size:15px;padding:4px 0}
.rg-foot .rg-small{font-size:12.5px;color:#9aa2a8;border-top:1px solid #3a4046;padding:14px 0 26px;margin:0}
@media (max-width:860px){.rg-fgrid{grid-template-columns:1fr 1fr}.rg-fgrid > div:first-child{grid-column:1/-1}}

/* Readable navigation and tables within the approved roof-guide template. */
.rg-nrow{flex-wrap:wrap;overflow:visible}.rg-nav a{min-height:44px;display:inline-flex;align-items:center}.rg-kick,.rg-logo small,.rg-hhero figcaption,.rg-pic figcaption,.rg-mono,.rg-foot h2{font-size:13px}p{max-width:900px}.rg-tw{overflow:auto}.rg-tw:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--red);outline-offset:3px}

.rg-foot .rg-small{font-size:13px}