/* ============================================================
   HOMEOWNER GUIDES — parts-of-a-roof.html, parts-of-siding.html
   Builds on the page base styles + luxury.css (.sr-cmp, .sr-faq, .srr-*).
   ============================================================ */
.gd-meta{display:flex;flex-wrap:wrap;gap:6px 0;margin-top:22px;font-size:.78rem;color:rgba(255,255,255,.62);letter-spacing:.01em}
.gd-meta b{color:#fff;font-weight:600}
.gd-meta>span{display:inline}
.gd-meta>span+span::before{content:'';display:inline-block;vertical-align:middle;width:4px;height:4px;border-radius:50%;background:var(--gold);opacity:.7;margin:0 12px 2px}

/* ---- Diagram ---- */
.gd-map{padding:56px 0 8px;background:linear-gradient(#fff,#fbfaf7)}
.gd-map-hd{max-width:760px;margin:0 auto 26px;text-align:center}
.gd-map-hd h2{color:var(--navy);font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:10px}
.gd-map-hd p{font-size:.95rem;color:var(--txm)}
.gd-fig{margin:0 auto;max-width:1060px;background:#fff;border:1px solid var(--bd);box-shadow:0 30px 60px -40px rgba(22,31,48,.45)}
.gd-svg{display:block;width:100%;height:auto}
.gd-fig figcaption{padding:12px 20px;border-top:1px solid var(--bd);font-size:.78rem;color:var(--txl);text-align:center}
.gd-hs{cursor:pointer;outline:none}
.gd-hs-l{stroke:var(--navy);stroke-width:1.4}
.gd-hs-dot{fill:var(--navy)}
.gd-hs-c{fill:var(--navy);stroke:var(--gold);stroke-width:2.5;transition:fill .25s ease,transform .25s ease;transform-box:fill-box;transform-origin:center}
.gd-hs-n{fill:#fff;font:700 15px 'Inter',Arial,sans-serif;text-anchor:middle;pointer-events:none;transition:fill .25s ease}
.gd-hs:hover .gd-hs-c,.gd-hs:focus-visible .gd-hs-c,.gd-hs.is-hot .gd-hs-c{fill:var(--gold);transform:scale(1.14)}
.gd-hs:hover .gd-hs-n,.gd-hs:focus-visible .gd-hs-n,.gd-hs.is-hot .gd-hs-n{fill:var(--navy-dk)}
.gd-inset-t{font:700 13px 'Inter',Arial,sans-serif;fill:var(--navy);letter-spacing:.12em;text-transform:uppercase}
.gd-dim{font:600 12px 'Inter',Arial,sans-serif;fill:var(--navy)}
.gd-legend{list-style:none;margin:22px auto 0;padding:0;max-width:1060px;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:8px}
.gd-legend a{display:flex;align-items:center;gap:11px;min-height:46px;padding:8px 12px;background:#fff;border:1px solid var(--bd);font-size:.84rem;font-weight:600;color:var(--navy);transition:border-color .25s ease,background .25s ease,transform .25s ease}
.gd-legend a:hover,.gd-legend a:focus-visible,.gd-legend a.is-hot{border-color:var(--gold);background:#fffaf0;transform:translateY(-1px)}
.gd-legend b{flex-shrink:0;width:26px;height:26px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--navy);color:#fff;font-size:.72rem;box-shadow:0 0 0 2px var(--gold) inset}

/* ---- Key takeaways ---- */
.gd-key{position:relative;overflow:hidden;background:var(--navy);color:#fff;padding:30px 32px 26px;margin:32px 0 40px;border-bottom:2px solid var(--gold)}
.gd-key::after{content:'';position:absolute;right:-70px;top:-70px;width:200px;height:200px;border:1px solid rgba(196,163,90,.18);border-radius:50%}
.gd-key h2{color:#fff!important;font-size:1.3rem!important;margin:0 0 14px!important}
.gd-key ul{list-style:none;margin:0;padding:0;position:relative;z-index:1}
.gd-key li{position:relative;padding:8px 0 8px 28px;font-size:.92rem;line-height:1.6;color:rgba(255,255,255,.85);border-top:1px solid rgba(255,255,255,.08)}
.gd-key li:first-child{border-top:0}
.gd-key li::before{content:'';position:absolute;left:3px;top:15px;width:11px;height:6px;border-left:2px solid var(--gold);border-bottom:2px solid var(--gold);transform:rotate(-45deg)}
.gd-key strong{color:#fff}

/* ---- Layout: sticky contents + article ---- */
.gd-wrap{padding:64px 0 40px}
.gd-grid{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start}
.gd-toc{position:sticky;top:96px;max-height:calc(100vh - 120px);overflow:auto;padding:4px 4px 12px 0;font-size:.8rem;scrollbar-width:thin}
.gd-toc-t{font-size:.64rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:12px;display:block;list-style:none;cursor:default}
.gd-toc-t::-webkit-details-marker{display:none}
.gd-toc-c{display:none}
@media(min-width:1101px){.gd-toc-t{pointer-events:none}}
.gd-toc p{font-size:.62rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--txl);margin:18px 0 6px}
.gd-toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--bd)}
.gd-toc a{display:block;padding:5px 0 5px 14px;margin-left:-1px;border-left:2px solid transparent;color:var(--txm);line-height:1.4;transition:color .2s ease,border-color .2s ease}
.gd-toc a:hover{color:var(--navy)}
.gd-toc a.is-on{color:var(--navy);font-weight:600;border-left-color:var(--gold)}
.gd-art{max-width:820px;min-width:0}
.gd-intro p{font-size:1.02rem;line-height:1.85;color:var(--txm);margin-bottom:1.1rem}
.gd-intro p.gd-lead{font-size:1.1rem;color:var(--tx)}
.gd-group{margin:64px 0 0;padding:14px 0 0;border-top:2px solid var(--navy)}
.gd-group-t{font-size:.66rem!important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)!important;margin:0 0 4px!important}
.gd-group-d{font-size:.92rem!important;color:var(--txl)!important;margin:0!important}

/* ---- One part ---- */
.gd-part{padding:46px 0 6px;border-bottom:1px solid var(--bd)}
.gd-part:last-child{border-bottom:0}
.gd-part-hd{display:flex;align-items:flex-start;gap:16px;margin-bottom:14px}
.gd-n{flex-shrink:0;width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--gold);color:var(--navy);font:700 .8rem 'Inter',sans-serif;margin-top:4px}
.gd-part h2,.gd-sec h2{color:var(--navy);font-size:clamp(1.45rem,2.4vw,1.95rem);margin:0;scroll-margin-top:110px}
.gd-aka{display:block;margin-top:6px;font-size:.78rem;color:var(--txl);letter-spacing:.01em}
.gd-def{font-size:1.04rem!important;line-height:1.8!important;color:var(--tx)!important;border-left:3px solid var(--gold);padding:2px 0 2px 18px;margin:0 0 22px!important}
.gd-part p,.gd-sec p{font-size:.96rem;line-height:1.85;color:var(--txm);margin:0 0 1rem}
.gd-part h3,.gd-sec h3{color:var(--navy);font-size:1.08rem;margin:26px 0 8px}
.gd-part a:not(.gd-btn),.gd-sec a:not(.gd-btn),.gd-intro a{color:var(--navy);font-weight:600;border-bottom:1px solid rgba(196,163,90,.6);transition:color .2s ease,border-color .2s ease}
.gd-part a:not(.gd-btn):hover,.gd-sec a:not(.gd-btn):hover,.gd-intro a:hover{color:#9A7B34;border-bottom-color:#9A7B34}
.gd-facts{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--bd);border:1px solid var(--bd);margin:0 0 22px}
.gd-facts div{background:#fff;padding:16px 18px}
.gd-facts dt{font-size:.62rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--navy-md);margin-bottom:6px}
.gd-facts dd{margin:0;font-size:.9rem;line-height:1.65;color:var(--txm)}
.gd-facts .gd-wide{grid-column:1/-1}
.gd-steps{list-style:none;counter-reset:gd;margin:0 0 18px;padding:0}
.gd-steps li{counter-increment:gd;position:relative;padding:10px 0 10px 44px;font-size:.93rem;line-height:1.7;color:var(--txm);border-bottom:1px solid var(--gray-md)}
.gd-steps li:last-child{border-bottom:0}
.gd-steps li::before{content:counter(gd);position:absolute;left:0;top:10px;width:28px;height:28px;border-radius:50%;background:var(--gray);color:var(--navy);font:700 .72rem 'Inter',sans-serif;display:flex;align-items:center;justify-content:center}
.gd-list{margin:0 0 18px 0;padding:0;list-style:none}
.gd-list li{position:relative;padding:7px 0 7px 22px;font-size:.93rem;line-height:1.7;color:var(--txm)}
.gd-list li::before{content:'';position:absolute;left:2px;top:17px;width:8px;height:8px;border:1.5px solid var(--gold);transform:rotate(45deg)}
.gd-list strong,.gd-steps strong,.gd-part p strong,.gd-sec p strong{color:var(--tx)}
.gd-warn{background:var(--gray);border-left:3px solid var(--navy);padding:18px 22px;margin:20px 0}
.gd-warn h3{margin:0 0 8px!important;font-size:.98rem!important;display:flex;align-items:center;gap:9px}
.gd-warn h3::before{content:'!';flex-shrink:0;width:20px;height:20px;border-radius:50%;background:var(--navy);color:#fff;font:700 .72rem 'Inter',sans-serif;display:inline-flex;align-items:center;justify-content:center}
.gd-warn ul{margin:0;padding:0 0 0 18px}
.gd-warn li{font-size:.9rem;line-height:1.7;color:var(--txm);padding:2px 0}
.gd-shelby{position:relative;background:linear-gradient(140deg,var(--navy-dk),var(--navy));padding:22px 24px 20px;margin:22px 0 26px;border-left:3px solid var(--gold)}
.gd-shelby span{display:block;font-size:.62rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-lt);margin-bottom:8px}
.gd-shelby p{color:rgba(255,255,255,.82)!important;font-size:.92rem!important;margin:0!important}
.gd-shelby a{color:#fff!important;border-bottom-color:var(--gold)!important}
.gd-photo{margin:6px 0 24px}
.gd-photo img{width:100%;height:auto;background:var(--gray)}
.gd-photo figcaption{font-size:.78rem;color:var(--txl);line-height:1.55;padding:10px 2px 0;border-bottom:1px solid var(--bd);padding-bottom:10px}
.gd-photo-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:6px 0 24px}
.gd-photo-row .gd-photo{margin:0}
.gd-photo-row img{aspect-ratio:4/3;object-fit:cover}
.gd-table-note{font-size:.76rem!important;color:var(--txl)!important;margin-top:-6px!important}
.gd-sec{padding:46px 0 10px}

/* ---- Underlayment / WRB type cards ---- */
.gd-types{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0 10px}
.gd-type{background:#fff;border:1px solid var(--bd);border-top:2px solid var(--gold);padding:20px 22px 16px;display:flex;flex-direction:column}
.gd-type h3{margin:0 0 8px!important;font-size:1.05rem!important}
.gd-type p{font-size:.88rem!important;line-height:1.7!important;margin:0 0 10px!important}
.gd-type ul{margin:0 0 12px;padding:0;list-style:none}
.gd-type li{position:relative;padding:5px 0 5px 18px;font-size:.86rem;line-height:1.6;color:var(--txm)}
.gd-type li::before{content:'';position:absolute;left:1px;top:13px;width:6px;height:6px;background:var(--gold);transform:rotate(45deg)}
.gd-mores{margin-top:auto;display:flex;flex-wrap:wrap;gap:6px 18px}
.gd-mores .gd-more{margin-top:0!important}
.gd-type .gd-more{margin-top:auto;font-size:.68rem!important;font-weight:700;letter-spacing:.14em;text-transform:uppercase;border-bottom:1px solid var(--gold)!important;align-self:flex-start;padding-bottom:2px}

/* ---- Owner video + review inside the article ---- */
.gd-art .sr-owner-inline{margin:26px 0}
.gd-art .srr-quote{margin:34px 0}

/* ---- FAQ + next steps ---- */
.gd-faq{margin-top:64px}
.gd-faq>h2{color:var(--navy);font-size:clamp(1.5rem,2.6vw,2.05rem);margin-bottom:6px}
.gd-faq>p{font-size:.95rem;color:var(--txm)}
.gd-next{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:22px 0 0}
.gd-next a{display:block;padding:20px 20px 18px;background:#fff;border:1px solid var(--bd);transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease}
.gd-next a:hover,.gd-next a:focus-visible{border-color:var(--gold);transform:translateY(-2px);box-shadow:0 16px 30px -22px rgba(22,31,48,.5)}
.gd-next em{display:block;font-style:normal;font-size:.6rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:6px}
.gd-next strong{display:block;font-family:'Playfair Display',serif;font-size:1.02rem;color:var(--navy);line-height:1.3;margin-bottom:6px}
.gd-next small{display:block;font-size:.8rem;color:var(--txm);line-height:1.5}
.gd-cta-box{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;background:var(--gray);border:1px solid var(--bd);padding:22px 24px;margin:28px 0 0}
.gd-cta-box p{margin:0!important;font-size:.95rem!important;color:var(--tx)!important;max-width:470px}
.gd-cta-box div{display:flex;flex-wrap:wrap;gap:10px}
.gd-btn{display:inline-block;padding:12px 22px;font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;transition:background .25s ease,color .25s ease}
.gd-btn-navy{background:var(--navy);color:#fff}
.gd-btn-navy:hover{background:var(--navy-dk)}
.gd-btn-line{border:1px solid var(--navy);color:var(--navy)}
.gd-btn-line:hover{background:var(--navy);color:#fff}

/* ---- Responsive ---- */
@media(max-width:1100px){
 .gd-grid{grid-template-columns:1fr;gap:0}
 .gd-toc{position:static;max-height:none;overflow:visible;background:var(--gray);border:1px solid var(--bd);padding:0;margin:0 0 36px}
 .gd-toc-t{display:flex;align-items:center;justify-content:space-between;margin:0;padding:16px 20px;cursor:pointer;min-height:48px}
 .gd-toc-c{display:inline-flex;align-items:center;gap:10px;font-size:.66rem;letter-spacing:.12em;color:var(--navy)}
 .gd-toc-c::after{content:'';width:8px;height:8px;border-right:1.5px solid var(--gold);border-bottom:1.5px solid var(--gold);transform:translateY(-2px) rotate(45deg);transition:transform .3s ease}
 .gd-toc details[open] .gd-toc-c::after{transform:translateY(2px) rotate(-135deg)}
 .gd-toc details>div{display:grid;grid-template-columns:repeat(2,1fr);gap:0 24px;padding:0 20px 16px}
 .gd-art{max-width:none}
}
@media(max-width:760px){
 .gd-facts,.gd-types,.gd-photo-row{grid-template-columns:1fr}
 .gd-next{grid-template-columns:1fr}
 .gd-toc details>div{grid-template-columns:1fr}
 .gd-hs-c{transform:scale(1.65)}
 .gd-hs:hover .gd-hs-c,.gd-hs:focus-visible .gd-hs-c,.gd-hs.is-hot .gd-hs-c{transform:scale(1.8)}
 .gd-hs-n{font-size:25px}
 .gd-hs-dot{r:6px}
 .page-hero .gd-crumbs{display:none}
 .gd-meta{flex-direction:column;gap:4px}
 .gd-meta>span+span::before{display:none}
 .gd-map{padding-top:40px}
 .gd-legend{grid-template-columns:1fr 1fr;gap:6px}
 .gd-legend a{font-size:.78rem;padding:7px 9px;gap:8px}
 .gd-key{padding:24px 20px 20px}
 .gd-part-hd{gap:12px}
 .gd-n{width:34px;height:34px}
 .gd-wrap{padding-top:44px}
}
@media(max-width:380px){.gd-legend{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.gd-hs-c,.gd-legend a,.gd-next a{transition:none}}
@media print{.ubar,.nav,.srr-strip,.cta-strip,.footer,.gd-toc,.gd-legend,.sr-owner-inline,.srr-quote,.gd-next,.gd-cta-box{display:none!important}.page-hero{padding:20px 0;background:#fff}.page-hero h1,.gd-meta,.gd-meta b{color:#000!important}.gd-grid{display:block}.gd-part{break-inside:avoid-page}}

/* ---- Purpose line + quick reference table (2026-10-20) ---- */
.gd-purpose{display:flex;gap:12px;align-items:baseline;background:#fffaf0;border:1px solid rgba(196,163,90,.35);padding:12px 16px;margin:-6px 0 22px!important;font-size:.93rem!important;line-height:1.7!important;color:var(--tx)!important}
.gd-purpose span{flex-shrink:0;font-size:.6rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:#9A7B34;padding-top:2px}
.gd-qref{margin:8px 0 10px}
.gd-qref>h2{color:var(--navy);font-size:clamp(1.4rem,2.4vw,1.9rem);margin:0 0 6px;scroll-margin-top:110px}
.gd-qref-t caption{caption-side:top;text-align:left;padding:4px 2px 12px;font-size:.88rem;color:var(--txm)}
.gd-qref-t tbody th{width:22%}
.gd-qref-t tbody th a{color:var(--navy);font-size:.72rem;letter-spacing:.06em;border-bottom:1px solid rgba(196,163,90,.6)}
.gd-qref-t td{font-size:.86rem}
@media(max-width:760px){
 .gd-purpose{flex-direction:column;gap:4px}
 .gd-qref .sr-cmp-wrap{overflow:visible}
 .gd-qref-t{min-width:0}
 .gd-qref-t,.gd-qref-t caption,.gd-qref-t tbody,.gd-qref-t tr,.gd-qref-t tbody th,.gd-qref-t td{display:block;width:auto}
 .gd-qref-t caption{padding:14px 16px 12px;border-bottom:1px solid var(--bd)}
 .gd-qref-t thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
 .gd-qref-t tbody tr{padding:14px 16px 12px;border-bottom:1px solid var(--gray-md)}
 .gd-qref-t tbody th{padding:0 0 6px;border:0}
 .gd-qref-t td{padding:3px 0;border:0}
 .gd-qref-t td+td::before{content:'Purpose: ';font-weight:700;color:var(--navy)}
}
.gd-facts>div:last-child:nth-child(odd){grid-column:1/-1}

/* ---- Photoreal diagram: base image + SVG hotspot overlay (2026-10-20) ---- */
.gd-stage{position:relative;background:#eef1f4}
.gd-stage picture,.gd-stage img{display:block;width:100%;height:auto}
.gd-stage .gd-overlay{position:absolute;inset:0;width:100%;height:100%}
.gd-stage .gd-hs-c{filter:drop-shadow(0 2px 3px rgba(10,16,26,.35))}
.gd-stage .gd-hs-l{stroke:#fff;stroke-width:2.2;paint-order:stroke}
.gd-stage .gd-hs-dot{fill:#fff;stroke:var(--navy);stroke-width:2}
.gd-stage .gd-dim-o{paint-order:stroke;stroke:#fff;stroke-width:4px;stroke-linejoin:round}

/* Labeled real-photo diagrams (_tools/photo_diagrams.py) */
.gd-fig--photo .gd-photo-wrap{position:relative;line-height:0}
.gd-fig--photo .gd-photo-wrap img{display:block;width:100%;height:auto}
.gd-fig--photo .gd-svg{position:absolute;inset:0;width:100%;height:100%}
.gd-fig--photo .gd-hs-l{stroke:#fff;stroke-width:2;filter:drop-shadow(0 0 1.5px rgba(0,0,0,.85))}
.gd-fig--photo .gd-hs-dot{fill:#fff;stroke:var(--navy,#21324B);stroke-width:2}
.gd-fig--photo .gd-hs-c{filter:drop-shadow(0 2px 4px rgba(0,0,0,.5))}
.gd-fig--photo .gd-inset-link{fill:none;stroke:#fff;stroke-width:2;stroke-dasharray:6 6;filter:drop-shadow(0 0 1.5px rgba(0,0,0,.8))}
.gd-fig--photo .gd-inset-cap{font:700 12px 'Inter',Arial,sans-serif;letter-spacing:.14em;text-anchor:middle;fill:#fff;paint-order:stroke;stroke:rgba(22,31,48,.92);stroke-width:4px;stroke-linejoin:round}
@media(max-width:760px){.gd-fig--photo .gd-inset-cap{font-size:20px}}