/* New Conservatory Roofs Ltd — design system
   Palette drawn from the trade itself: RAL 7016 anthracite frames,
   glass tints, and RAL 2004 pure-orange powder coat as the signal. */
:root{
  --anthracite:#2B3238;
  --graphite:#1A2025;
  --paper:#F4F7F8;
  --panel:#FFFFFF;
  --skytint:#DEEAF0;
  --glassfill:#E8F1F5;
  --text:#1E272D;
  --muted:#59666E;
  --hairline:#C9D4DA;
  --draw:#3A464E;
  --dim:#8CA0AB;
  --ral2004:#E25303;
  --ral2004-dark:#C24500;
  --focus:#0B63C5;
  --radius:10px;
  --wrap:1120px;
  --font-display:"Archivo",system-ui,sans-serif;
  --font-body:"Instrument Sans",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
body{margin:0;font-family:var(--font-body);font-size:1.0625rem;line-height:1.65;color:var(--text);background:var(--paper)}
img,svg{max-width:100%;height:auto}
a{color:var(--anthracite);text-underline-offset:3px}
a:hover{color:var(--ral2004-dark)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-9999px;top:0;background:var(--anthracite);color:#fff;padding:.6rem 1rem;z-index:100}
.skip:focus{left:12px;top:12px}

/* Type */
h1,h2,h3{font-family:var(--font-display);color:var(--graphite);line-height:1.12;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,4.6vw,3.35rem);font-weight:900}
h2{font-size:clamp(1.55rem,3vw,2.15rem);font-weight:800}
h3{font-size:1.17rem;font-weight:700}
p{margin:0 0 1.05em}
.lede{font-size:1.16rem;color:var(--muted);max-width:62ch}
.mono{font-family:var(--font-mono);font-size:.83em;letter-spacing:.02em}

/* RAL chip eyebrow — the section marker */
.chip{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:.9rem}
.chip::before{content:"";width:.85rem;height:.85rem;background:var(--ral2004);border:1px solid var(--ral2004-dark);border-radius:2px;box-shadow:inset 0 0 0 1.5px #fff}
.chip.grey::before{background:var(--anthracite);border-color:var(--graphite)}

/* Header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(244,247,248,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--hairline)}
.hdr{display:flex;align-items:center;gap:1.2rem;min-height:72px}
.logo{display:flex;align-items:center;gap:.65rem;text-decoration:none;color:var(--graphite);font-family:var(--font-display);font-weight:800;font-size:1.02rem;line-height:1.1}
.logo svg{width:38px;height:38px;flex:none}
.logo .lg-sub{display:block;font-family:var(--font-mono);font-weight:400;font-size:.62rem;letter-spacing:.16em;color:var(--ral2004-dark);text-transform:uppercase}
nav.main{margin-left:auto}
nav.main ul{list-style:none;display:flex;gap:.15rem;margin:0;padding:0;align-items:center}
nav.main a,.navbtn{display:block;padding:.55rem .8rem;text-decoration:none;font-weight:600;font-size:.95rem;color:var(--text);border-radius:8px;background:none;border:0;font-family:inherit;cursor:pointer}
nav.main a:hover,.navbtn:hover{background:var(--skytint);color:var(--graphite)}
nav.main a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--ral2004)}
.has-drop{position:relative}
.drop{position:absolute;top:calc(100% + 6px);left:0;background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);box-shadow:0 14px 34px rgba(26,32,37,.14);min-width:270px;padding:.4rem;display:none}
.has-drop:hover .drop,.has-drop:focus-within .drop,.drop.open{display:block}
.drop a{padding:.55rem .7rem;font-weight:500}
.hdr-phone{display:none;align-items:center;gap:.5rem;text-decoration:none;background:var(--anthracite);color:#fff;font-family:var(--font-display);font-weight:700;padding:.6rem 1rem;border-radius:9px;font-size:.95rem;white-space:nowrap}
.hdr-phone:hover{background:var(--graphite);color:#fff}
.hdr-phone svg{width:16px;height:16px}
body.has-phone .hdr-phone{display:inline-flex}
.menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--hairline);border-radius:8px;padding:.5rem .7rem;font-family:var(--font-mono);font-size:.8rem;letter-spacing:.1em;cursor:pointer;color:var(--text)}

/* Hero */
.hero{padding:4.2rem 0 3.4rem;background:
  linear-gradient(180deg,#FDFEFE 0%,var(--paper) 65%);
  border-bottom:1px solid var(--hairline)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.hero .lede{margin-bottom:1.6rem}
.cta-row{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center}
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-display);font-weight:700;font-size:1rem;text-decoration:none;border-radius:9px;padding:.85rem 1.35rem;border:2px solid transparent;cursor:pointer}
.btn-primary{background:var(--ral2004);color:#fff}
.btn-primary:hover{background:var(--ral2004-dark);color:#fff}
.btn-ghost{background:transparent;border-color:var(--anthracite);color:var(--anthracite)}
.btn-ghost:hover{background:var(--anthracite);color:#fff}
body:not(.has-phone) .phone-cta{display:none}
.hero-points{display:flex;flex-wrap:wrap;gap:.5rem 1.4rem;margin-top:1.5rem;padding:0;list-style:none;font-family:var(--font-mono);font-size:.78rem;letter-spacing:.06em;color:var(--muted)}
.hero-points li::before{content:"■";color:var(--ral2004);margin-right:.5rem;font-size:.6rem;vertical-align:1px}

/* Technical drawings */
.techdraw{width:100%;display:block}
.techdraw .s{stroke:var(--draw);stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.techdraw .s.thin{stroke-width:1.4}
.techdraw .g{fill:var(--glassfill);stroke:none}
.techdraw .a{stroke:var(--ral2004);stroke-width:3;fill:none;stroke-linecap:round}
.techdraw .a.rcap,.techdraw circle.a{fill:var(--ral2004);stroke:var(--ral2004-dark);stroke-width:1.5}
.techdraw .d,.techdraw .arr{stroke:var(--dim);stroke-width:1.3;fill:none}
.techdraw .dt{fill:var(--dim);font-family:var(--font-mono);font-size:11px;letter-spacing:.08em}
.techdraw .ust{stroke-dasharray:5 4}

/* Sections */
section{padding:3.6rem 0}
.section-head{max-width:66ch;margin-bottom:2.2rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.4rem}

/* Product cards */
.pcard{background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);padding:1.5rem 1.5rem 1.35rem;display:flex;flex-direction:column;transition:box-shadow .18s ease,transform .18s ease}
.pcard:hover{box-shadow:0 16px 34px rgba(26,32,37,.12);transform:translateY(-2px)}
.pcard .techdraw{margin:0 0 1rem;background:linear-gradient(180deg,#FBFDFD,#F1F6F8);border:1px solid var(--hairline);border-radius:8px;padding:.6rem}
.pcard h3{margin-bottom:.35rem}
.pcard p{color:var(--muted);font-size:.97rem;flex:1}
.pcard .plink{font-family:var(--font-display);font-weight:700;font-size:.95rem;text-decoration:none;color:var(--ral2004-dark)}
.pcard .plink::after{content:" →"}
.pcard .plink:hover{text-decoration:underline}

/* Feature / why rows */
.why{background:var(--panel);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)}
.wcard{padding:1.4rem;border:1px solid var(--hairline);border-radius:var(--radius);background:var(--paper)}
.wcard h3{display:flex;align-items:center;gap:.6rem}
.wcard .mono{color:var(--ral2004-dark)}

/* Steps */
.step{background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);padding:1.35rem}
.step .num{font-family:var(--font-mono);color:var(--ral2004-dark);font-size:.8rem;letter-spacing:.12em;display:block;margin-bottom:.5rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}

/* Spec tables */
.spec{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);overflow:hidden;font-size:.96rem}
.spec caption{caption-side:top;text-align:left;font-family:var(--font-display);font-weight:700;padding:0 0 .7rem}
.spec th,.spec td{padding:.7rem .9rem;border-bottom:1px solid var(--hairline);text-align:left;vertical-align:top}
.spec th{font-family:var(--font-mono);font-weight:500;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:#EFF4F6;width:34%}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:none}

/* Content pages */
.page-hero{padding:3.4rem 0 2.6rem;border-bottom:1px solid var(--hairline);background:linear-gradient(180deg,#FDFEFE,var(--paper))}
.prose{max-width:70ch}
.prose h2{margin-top:2.2rem}
.prose ul{padding-left:1.2rem}
.prose li{margin-bottom:.45rem}
.two-col{display:grid;grid-template-columns:1.2fr .8fr;gap:2.6rem;align-items:start}
.sidebox{background:var(--panel);border:1px solid var(--hairline);border-left:4px solid var(--ral2004);border-radius:var(--radius);padding:1.4rem;position:sticky;top:96px}
.sidebox h3{margin-top:0}
.sidebox .mono{color:var(--muted)}

/* FAQ */
.faq details{background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);margin-bottom:.7rem}
.faq summary{cursor:pointer;padding:1rem 1.2rem;font-family:var(--font-display);font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--ral2004);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 1.2rem 1.1rem;margin:0;color:var(--muted)}

/* CTA band */
.cta-band{background:var(--anthracite);color:#E9EFF2;padding:3.2rem 0;border-top:4px solid var(--ral2004)}
.cta-band h2{color:#fff}
.cta-band p{color:#C4CFD5;max-width:60ch}
.cta-band .btn-ghost{border-color:#E9EFF2;color:#E9EFF2}
.cta-band .btn-ghost:hover{background:#E9EFF2;color:var(--graphite)}
.cta-inner{display:flex;flex-wrap:wrap;gap:2rem;align-items:center;justify-content:space-between}

/* Forms */
.form-panel{background:var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);padding:1.8rem}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{display:flex;flex-direction:column;gap:.35rem}
.field.full{grid-column:1/-1}
.field label{font-family:var(--font-display);font-weight:700;font-size:.9rem}
.field input,.field select,.field textarea{font:inherit;padding:.7rem .8rem;border:1.5px solid var(--hairline);border-radius:8px;background:#FBFDFD;color:var(--text)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--anthracite);outline:3px solid rgba(11,99,197,.25)}
.consent{display:flex;gap:.6rem;align-items:flex-start;font-size:.88rem;color:var(--muted)}
.consent input{width:1.15rem;height:1.15rem;margin-top:.2rem;flex:none;accent-color:var(--ral2004)}
.form-note{font-family:var(--font-mono);font-size:.74rem;color:var(--muted);letter-spacing:.04em}
.hp-field{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.form-msg{display:none;margin-top:1rem;padding:.9rem 1.1rem;border-radius:8px;font-weight:600}
.form-msg.ok{display:block;background:#E6F4EA;color:#14532D;border:1px solid #86C29A}
.form-msg.err{display:block;background:#FBEAE5;color:#8C2B0E;border:1px solid #E8A084}

/* Footer */
footer{background:var(--graphite);color:#B9C4CB;padding:3rem 0 2rem;font-size:.95rem}
footer h3{color:#fff;font-size:1rem}
.ftr-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:2rem}
footer a{color:#DDE5E9}
footer a:hover{color:var(--ral2004)}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin-bottom:.45rem}
.ftr-nap{font-style:normal;line-height:1.7}
.ftr-base{border-top:1px solid #2E3A42;margin-top:2.2rem;padding-top:1.3rem;display:flex;flex-wrap:wrap;gap:.6rem 2rem;justify-content:space-between;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.05em;color:#8A98A1}
.badge-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.9rem}
.badge{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;border:1px solid #3A4750;border-radius:99px;padding:.28rem .7rem;color:#C4CFD5}

/* Breadcrumbs */
.crumbs{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;color:var(--muted);margin-bottom:1rem}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--ral2004-dark);text-decoration:underline}

/* Responsive */
@media (max-width:980px){
  .hero-grid,.two-col{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr 1fr}
  .grid-4{grid-template-columns:1fr 1fr}
  .ftr-grid{grid-template-columns:1fr 1fr}
  .sidebox{position:static}
}
@media (max-width:760px){
  .menu-toggle{display:block}
  nav.main{position:absolute;top:72px;left:0;right:0;background:var(--panel);border-bottom:1px solid var(--hairline);display:none;padding:.6rem 1rem 1rem;margin:0}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;align-items:stretch;gap:0}
  .drop{position:static;display:block;border:none;box-shadow:none;padding:0 0 0 .9rem;min-width:0}
  .hdr-phone span.lbl{display:none}
  .grid-3,.grid-4,.form-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  section{padding:2.6rem 0}
}
@media (max-width:520px){
  .ftr-grid{grid-template-columns:1fr}
}