/* Erie Commercial Roof Repair: H18-S16-P2-B5-R6-F6-M43-C2-I1-E1, V8, K3, T1.
   Palette (PA batch, deep teal + brick red): base #144E49, secondary #638C89, accent #B74028, neutrals #F4F9F8 / #091917.
   Barlow 600/700 headings, Lato 400/700 body, self-hosted (Fontsource, OFL). */
@font-face{font-family:"Barlow";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/barlow-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/barlow-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Lato";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/lato-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Lato";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/lato-latin-700-normal.woff2) format("woff2")}
:root{
  --brand:#144E49;--brand-deep:#0D3834;--second:#638C89;--accent:#B74028;--accent-hover:#9A3420;--accent-tint:#F6E3DD;
  --page:#F4F9F8;--surface:#FFFFFF;--alt:#E6EFED;--tint:#D9E7E4;--ink:#091917;--muted:#2F4A47;--border:#B9CCC9;
  --on-dark:#F4F9F8;--on-dark-soft:#D7E6E3;--eyebrow-dark:#F3C7BB;
  --hf:"Barlow",Arial,sans-serif;--bf:"Lato",Arial,sans-serif;--r:6px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:88px}
body{margin:0;background:var(--page);color:var(--ink);font-family:var(--bf);font-size:18px;line-height:1.6;font-weight:400}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{font-family:var(--hf);font-weight:700;line-height:1.2;margin:0 0 .5em;color:var(--ink)}
h1{font-size:clamp(30px,6.4vw,48px)}
h2{font-size:clamp(25px,4.4vw,36px)}
h3{font-size:clamp(19px,2.2vw,22px);font-weight:600}
p{margin:0 0 1em}
a{color:var(--brand);text-underline-offset:3px}
a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.bg-brand a:focus-visible,.bg-brand button:focus-visible{outline-color:#fff}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:12px 16px;z-index:100}
.skip:focus{left:8px}
.wrap{max-width:1200px;margin:0 auto;padding:0 18px}
.narrow{max-width:820px}
.icon{width:30px;height:30px;flex:none;fill:none;stroke:var(--accent);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.bg-brand .icon{stroke:var(--on-dark)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 24px;border-radius:var(--r);font-family:var(--hf);font-weight:700;font-size:18px;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background-color .15s,color .15s}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}
.btn-on-dark,.bg-brand .btn-primary{border-color:var(--on-dark)}
.btn-call{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-call:hover{background:var(--brand);color:#fff}
.btn-call-dark{background:transparent;color:#fff;border-color:#fff}
.btn-call-dark:hover{background:#fff;color:var(--brand)}
.actions{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.actions .btn{width:100%}
.actions.center{align-items:center;margin-top:32px}
@media(min-width:640px){.actions{flex-direction:row;flex-wrap:wrap;justify-content:center}.actions .btn{width:auto;min-width:220px}}
.text-link{display:inline-flex;align-items:center;min-height:44px;font-family:var(--hf);font-weight:700;color:var(--brand)}

/* header and navigation */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:3px solid var(--brand)}
.hdr{max-width:1320px;margin:0 auto;padding:8px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand img{height:50px;width:auto}
.burger{width:48px;height:48px;margin-right:-6px;background:none;border:0;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;cursor:pointer}
.burger span{display:block;width:26px;height:3px;background:var(--ink);border-radius:2px}
.site-nav{display:none}
.site-nav.open{display:flex;flex-direction:column;position:fixed;top:69px;left:0;right:0;bottom:0;overflow-y:auto;background:#fff;padding:12px 18px 32px;gap:2px}
.nav-link,.submenu a{display:flex;align-items:center;min-height:48px;padding:6px 4px;color:var(--ink);text-decoration:none;font-family:var(--hf);font-weight:600;font-size:18px}
.nav-group{display:flex;flex-wrap:wrap;align-items:center;border-bottom:1px solid var(--border)}
.nav-group .nav-link{flex:1}
.site-nav>.nav-link{border-bottom:1px solid var(--border)}
.sub-toggle{width:48px;height:48px;background:none;border:0;cursor:pointer}
.sub-toggle svg{width:22px;height:22px;fill:none;stroke:var(--ink);stroke-width:2.2}
.sub-toggle[aria-expanded=true] svg{transform:rotate(180deg)}
.submenu{display:none;width:100%;padding:0 0 8px 14px}
.submenu.show{display:block}
.submenu .all{color:var(--brand)}
.nav-cta{display:grid;grid-template-columns:1fr;gap:10px;margin-top:16px}
.nav-cta .btn{width:100%}
body.menu-open{overflow:hidden}
body.menu-open .call-bar{display:none}
@media(min-width:1200px){
  .brand img{height:60px}
  .burger{display:none}
  .site-nav,.site-nav.open{display:flex;position:static;flex-direction:row;align-items:center;gap:4px;padding:0;overflow:visible;background:none}
  .nav-link{padding:6px 10px;font-size:17px}
  .site-nav>.nav-link,.nav-group{border:0}
  .nav-group{position:relative;flex-wrap:nowrap}
  .sub-toggle{width:28px;margin-left:-8px}
  .submenu{position:absolute;top:100%;left:0;width:300px;background:#fff;border:1px solid var(--border);border-top:3px solid var(--accent);border-radius:0 0 var(--r) var(--r);padding:8px;box-shadow:0 10px 24px rgba(9,25,23,.14)}
  .submenu a{min-height:44px;padding:6px 10px}
  .nav-cta{display:flex;margin:0 0 0 10px;gap:8px}
  .nav-cta .btn{width:auto;min-height:48px;padding:10px 16px;font-size:16px}
}

/* sections, heading system E1 (small uppercase eyebrow over a centered H2) */
.sec{padding:52px 0}
@media(min-width:900px){.sec{padding:80px 0}}
.bg-page{background:var(--page)}.bg-alt{background:var(--alt)}.bg-tint{background:var(--tint)}
.bg-brand{background:var(--brand);color:var(--on-dark)}
.bg-brand h2,.bg-brand h3{color:#fff}
.sec-head{text-align:center;max-width:780px;margin:0 auto 32px}
.sec-head p{color:var(--muted);margin:0}
.eyebrow{display:block;font-family:var(--hf);font-weight:700;font-size:15px;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.eyebrow-dark{color:var(--eyebrow-dark)}
@media(min-width:1000px){
  .L2 .wrap,.L3 .wrap{display:grid;grid-template-columns:minmax(260px,1fr) 2fr;gap:48px;align-items:start}
  .L3 .wrap{grid-template-columns:2fr minmax(260px,1fr)}
  .L3 .sec-head{order:2}
  .L2 .sec-head,.L3 .sec-head,.L4 .sec-head{text-align:left;margin:0 0 28px}
  .L2 .sec-head,.L3 .sec-head{position:sticky;top:110px}
  .L4 .sec-head{max-width:860px}
  .L5 .wrap{max-width:820px}
}

/* H18 hero: inspection-sheet card inside a full-bleed photo */
.hero{display:flex;flex-direction:column;background:var(--alt)}
.hero-inner{order:1;padding:20px 18px 24px;width:100%}
.hero-photo{order:2}
.hero-photo img{width:100%;aspect-ratio:16/9;object-fit:cover}
.sheet{background:#fff;border:1px solid var(--border);border-bottom:4px solid var(--brand);border-radius:var(--r);overflow:hidden;box-shadow:0 12px 30px rgba(9,25,23,.18);max-width:780px;margin:0 auto}
.sheet-strip{list-style:none;margin:0;padding:6px 10px;display:grid;grid-template-columns:1fr 1fr;background:var(--brand)}
.sheet-strip li{text-align:center}
.sheet-strip li+li{border-left:1px solid rgba(244,249,248,.35)}
.sheet-strip li:nth-child(3){border-left:0}
.sheet-strip a{display:flex;align-items:center;justify-content:center;min-height:30px;padding:2px 6px;color:#fff;font-family:var(--hf);font-weight:600;font-size:15px;text-decoration:none}
.sheet-strip a:hover{text-decoration:underline}
.sheet-body{padding:18px 18px 22px;text-align:center}
.sheet-body h1{margin-bottom:8px}
.sub{font-size:clamp(20px,2.6vw,24px);font-weight:600;color:var(--brand);margin-bottom:10px}
.sheet-body>p{color:var(--muted);margin-bottom:12px}
.crumb{display:flex;justify-content:center;gap:8px;font-size:15px;margin-bottom:6px;color:var(--muted)}
.crumb a{color:var(--brand);display:inline-flex;align-items:center;min-height:28px}
@media(min-width:900px){
  .hero{display:grid;grid-template-areas:"stack";background:none}
  .hero-photo,.hero-inner{grid-area:stack}
  .hero-photo img{height:100%;min-height:640px;aspect-ratio:auto}
  .hero-inner{display:flex;align-items:center;justify-content:center;padding:48px 32px;z-index:1}
  .sheet-strip{display:flex;justify-content:center;padding:0}
  .sheet-strip li{flex:1}
  .sheet-strip li:nth-child(3){border-left:1px solid rgba(244,249,248,.35)}
  .sheet-strip a{min-height:40px}
  .sheet-body{padding:26px 40px 30px}
}

/* fact strip */
.sec-facts{padding:22px 0}
.facts{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.facts li{display:flex;align-items:center;gap:12px;font-family:var(--hf);font-weight:600;font-size:18px}
@media(min-width:700px){.facts{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1100px){.facts{grid-template-columns:repeat(4,1fr)}}

/* S16 building-fit: photo cards plus building matrix */
.fit-cards{display:grid;gap:20px}
@media(min-width:640px){.fit-cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1100px){.fit-cards.n4{grid-template-columns:repeat(4,1fr)}.fit-cards.n3{grid-template-columns:repeat(3,1fr)}}
.fit-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.fit-media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.fit-body{padding:18px 18px 10px;display:flex;flex-direction:column;flex:1}
.fit-body h3 a{color:var(--ink);text-decoration:none}
.fit-body h3 a:hover{color:var(--brand);text-decoration:underline}
.fit-body p{flex:1}
.matrix-title{text-align:center;margin:44px 0 16px}
.matrix-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--r)}
.matrix{width:100%;border-collapse:collapse;font-size:17px}
.matrix th,.matrix td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border)}
.matrix thead th{background:var(--brand);color:#fff;font-family:var(--hf);font-weight:600}
.matrix tbody th{font-family:var(--hf);font-weight:600}
.matrix tbody th,.matrix td.fit{display:flex;gap:8px;align-items:flex-start}
.matrix td.fit .icon{width:22px;height:22px;stroke-width:2.2;margin-top:2px}
.matrix tbody th .icon{width:24px;height:24px}
.matrix td.rare span{color:var(--muted)}
@media(min-width:900px){
  .matrix tbody th,.matrix td.fit{display:table-cell}
  .matrix tbody th .icon,.matrix td.fit .icon{display:inline-block;vertical-align:-5px;margin-right:6px}
}
@media(max-width:899px){
  .matrix thead{position:absolute;left:-9999px}
  .matrix,.matrix tbody,.matrix tr{display:block}
  .matrix tr{border-bottom:2px solid var(--brand)}
  .matrix tbody th{background:var(--tint);border-bottom:0}
  .matrix td{display:flex;gap:8px;border-bottom:1px solid var(--border)}
  .matrix td::before{content:attr(data-label);font-family:var(--hf);font-weight:700;min-width:118px;flex:none}
}

/* P2 horizontal strip with connector line */
.strip{list-style:none;margin:0;padding:0;display:grid;gap:18px;position:relative}
.step{position:relative;background:#fff;border:1px solid var(--border);border-top:4px solid var(--accent);border-radius:var(--r);padding:18px 18px 8px 74px}
.step-num{position:absolute;left:16px;top:16px;width:42px;height:42px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--hf);font-weight:700;font-size:20px;z-index:1}
.step .icon{position:absolute;right:16px;top:18px;width:26px;height:26px}
.step-title{padding-right:34px}
@media(max-width:899px){.strip::before{content:"";position:absolute;left:36px;top:20px;bottom:20px;width:3px;background:var(--second)}}
@media(min-width:900px){
  .strip.n5{grid-template-columns:repeat(5,1fr)}.strip.n4{grid-template-columns:repeat(4,1fr)}
  .strip::before{content:"";position:absolute;left:4%;right:4%;top:37px;height:3px;background:var(--second)}
  .step{padding:72px 18px 8px;text-align:left}
  .step .icon{top:24px}
}

/* B5 failure-mode pairs */
.fms{list-style:none;margin:0;padding:0;display:grid;gap:16px}
.fm{display:grid;background:#fff;border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.fm-fail{padding:18px 18px 4px}
.fm-fail .icon{margin-bottom:8px}
.fm-fix{background:var(--accent-tint);border-left:4px solid var(--accent);padding:14px 18px 4px}
.fm-label,.cell-label{display:block;font-family:var(--hf);font-weight:700;font-size:15px;letter-spacing:.04em;text-transform:uppercase;color:var(--brand);margin-bottom:4px}
.fm-fix .fm-label{color:#7E2A19}
@media(min-width:700px){.fm{grid-template-columns:1fr 1fr}.fm-fix{padding:18px 18px 4px}}

/* R6 inside / on the roof pairs */
.pairs{list-style:none;margin:0;padding:0;display:grid;gap:16px}
.pair{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:16px 18px 6px}
.pair-head{display:flex;gap:12px;align-items:center;margin-bottom:10px}
.pair-head h3{margin:0}
.pair-cells{display:grid;gap:10px}
.cell{border-top:2px solid var(--tint);padding-top:10px}
.cell-roof{border-top-color:var(--accent)}
@media(min-width:700px){.pair-cells{grid-template-columns:1fr 1fr;gap:20px}}

/* K3 VS cards */
.vs{display:grid;gap:18px;align-items:stretch;position:relative}
.vs-card{background:#fff;border:2px solid var(--border);border-radius:var(--r);overflow:hidden}
.vs-main{border-color:var(--brand)}
.vs-head{background:var(--tint);display:flex;justify-content:center;align-items:center;padding:22px}
.vs-main .vs-head{background:var(--brand)}
.vs-main .vs-head .icon{stroke:#fff}
.vs-head .icon{width:44px;height:44px}
.vs-body{padding:18px 18px 6px}
.vs-body dl{margin:0}
.vs-row{display:grid;grid-template-columns:118px 1fr;gap:10px;padding:10px 0;border-top:1px solid var(--border)}
.vs-row dt{font-family:var(--hf);font-weight:700}
.vs-row dd{margin:0}
.vs-badge{justify-self:center;width:64px;height:64px;border-radius:50%;background:var(--accent);color:#fff;border:4px solid #fff;display:flex;align-items:center;justify-content:center;font-family:var(--hf);font-weight:700;font-size:20px;box-shadow:0 4px 12px rgba(9,25,23,.2)}
.vs-note{max-width:780px;margin:22px auto 0;text-align:center;color:var(--muted)}
@media(min-width:900px){.vs{grid-template-columns:1fr 0 1fr;gap:24px}.vs-badge{position:relative;top:40px;left:-32px}}

/* C2 split band */
.band{padding:0}
.band-grid{display:grid;padding:0}
.band-photo img{width:100%;height:100%;aspect-ratio:16/9;object-fit:cover}
.band-copy{padding:32px 18px 40px}
.band-copy p{color:var(--on-dark-soft)}
@media(min-width:900px){.band-grid{grid-template-columns:1fr 1fr;max-width:none;padding:0}.band-photo img{aspect-ratio:auto;min-height:380px}.band-copy{padding:56px 48px;align-self:center;max-width:620px}}

/* M43 town accordion */
.town-acc{display:grid;gap:10px}
.town{background:#fff;border:1px solid var(--border);border-radius:var(--r)}
.town summary{list-style:none;display:flex;align-items:center;gap:10px;min-height:58px;padding:8px 16px;cursor:pointer;font-family:var(--hf);font-weight:700;font-size:20px}
.town summary::-webkit-details-marker{display:none}
.town-name{flex:1}
.chev{width:24px;height:24px;fill:none;stroke:var(--accent);stroke-width:2.2;transition:transform .15s}
.town[open] .chev{transform:rotate(180deg)}
.town[open]{border-left:4px solid var(--accent)}
.town-panel{padding:0 16px 8px}
.home-base{font-family:var(--hf);font-weight:700;font-size:14px;letter-spacing:.04em;text-transform:uppercase;background:var(--tint);color:var(--brand);padding:2px 8px;border-radius:4px}

/* F6 FAQ tabs */
.ftab-list{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:20px}
.ftab-list [role=tab]{min-height:48px;padding:8px 18px;font-family:var(--hf);font-weight:600;font-size:17px;background:#fff;color:var(--brand);border:2px solid var(--brand);border-radius:var(--r);cursor:pointer}
.ftab-list [role=tab][aria-selected=true]{background:var(--brand);color:#fff}
.ftab-panel{display:grid;gap:14px;max-width:900px;margin:0 auto}
.ftab-panel[hidden]{display:none}
.qa{background:#fff;border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:var(--r);padding:18px 18px 6px}
.qa h3{margin-bottom:8px}

/* split, rows, cards, checklist */
.split-grid{display:grid;gap:24px}
.split-photo img{border-radius:var(--r);width:100%;aspect-ratio:3/2;object-fit:cover}
@media(min-width:1100px){.split-grid{grid-template-columns:1.1fr 1fr;align-items:start}}
.icon-list,.checklist{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.icon-list li,.checklist li{display:flex;gap:12px;align-items:flex-start}
.icon-list .icon,.checklist .icon{width:26px;height:26px;margin-top:2px}
.checklist li{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:12px 14px}
@media(min-width:700px){.checklist{grid-template-columns:1fr 1fr}}
.rows{list-style:none;margin:0;padding:0;border-top:2px solid var(--brand)}
.row{display:flex;gap:16px;padding:18px 4px 6px;border-bottom:1px solid var(--border)}
.row h3{margin-bottom:6px}
.card-grid{display:grid;gap:18px}
@media(min-width:700px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1100px){.card-grid.n6{grid-template-columns:repeat(3,1fr)}}
.card{background:#fff;border:1px solid var(--border);border-top:4px solid var(--brand);border-radius:var(--r);padding:20px 18px 6px}
.card .icon{margin-bottom:8px}

/* closing CTA */
.close-inner{text-align:center;max-width:760px;margin:0 auto}
.close-inner p{color:var(--on-dark-soft)}

/* FAQ page */
.jumps{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.jumps a{display:inline-flex;align-items:center;min-height:48px;padding:6px 16px;background:#fff;border:2px solid var(--brand);border-radius:var(--r);font-family:var(--hf);font-weight:600;text-decoration:none}
.qa-list{display:grid;gap:14px;max-width:900px;margin:0 auto}

/* utility pages and forms */
.utility-head{padding:40px 0 28px}
.utility-head p{color:var(--muted)}
.form-grid{display:grid;gap:32px}
@media(min-width:900px){.form-grid{grid-template-columns:1.2fr 1fr;align-items:start}}
.lead-form{background:#fff;border:1px solid var(--border);border-top:4px solid var(--brand);border-radius:var(--r);padding:24px}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--hf);font-weight:600;margin-bottom:6px}
.field input,.field textarea{width:100%;min-height:52px;padding:12px 14px;font:inherit;font-size:18px;color:var(--ink);background:#fff;border:2px solid #5E7976;border-radius:var(--r)}
.field textarea{min-height:140px}
.honeypot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.btn-submit{width:100%}
.form-status{margin:14px 0 0;font-weight:700;min-height:1.6em}
.form-side img{border-radius:var(--r);margin-bottom:18px}
.phone-big{display:inline-flex;align-items:center;min-height:48px;font-family:var(--hf);font-weight:700;font-size:26px}
.receipt{background:#fff;border:1px solid var(--border);border-left:4px solid var(--brand);border-radius:var(--r);padding:20px}
.receipt a{display:inline-flex;align-items:center;min-height:44px}
.legal-block{margin-bottom:28px}
.legal-block h2{font-size:clamp(22px,3vw,28px)}

/* footer and call bar */
.site-footer{background:var(--brand-deep);color:var(--on-dark);padding:44px 0 96px}
.site-footer a{color:#fff}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li a{display:inline-flex;align-items:center;min-height:44px}
.foot-grid{display:grid;gap:28px}
.foot-logo{display:inline-block;background:#fff;border-radius:var(--r);padding:8px 10px;margin-bottom:12px}
.foot-logo img{width:190px;height:auto}
.foot-h{font-size:19px;color:#fff;margin-bottom:10px}
.foot-phone{display:inline-flex;min-height:48px;align-items:center;font-family:var(--hf);font-weight:700;font-size:22px}
.foot-legal{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.25)}
.foot-legal a{display:inline-flex;align-items:center;min-height:44px}
@media(min-width:900px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}.site-footer{padding-bottom:48px}}
.call-bar{position:fixed;left:0;right:0;bottom:0;z-index:40;display:flex;align-items:center;justify-content:center;gap:10px;min-height:58px;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:var(--brand);color:#fff;font-family:var(--hf);font-weight:700;font-size:21px;text-decoration:none;border-top:3px solid var(--accent)}
.call-bar svg{width:24px;height:24px;fill:none;stroke:#fff;stroke-width:2.2}
@media(min-width:900px){.call-bar{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.bg-tint .eyebrow{color:#8E2F1D}