/* DNG Supply Co. secondary pages (FAQ, comparisons, service areas).
   Palette and type match the homepage. Staged 2026-09-01. */
:root{
  --bg:#FAF7F1; --ink:#0F1E3D; --green:#2E8B5F; --orange:#FF6B1A;
  --line:#E8E2D4; --muted:#5F6A7D; --paper:#FFFFFF; --r-md:16px; --r-sm:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 "Archivo",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--ink)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.announce{background:var(--ink);color:#F6F3EC;font-size:13px;letter-spacing:.02em;text-align:center;padding:8px 12px}
.announce .sep{opacity:.45;margin:0 10px}
.nav{position:sticky;top:0;z-index:20;background:rgba(250,247,241,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{width:30px;height:30px}
.logo-type{font-weight:800;letter-spacing:.02em;font-size:15px;line-height:1}
.logo-type .b{display:block;font-weight:600;font-size:10px;letter-spacing:.18em;color:var(--muted);margin-top:3px}
.nav-links{display:flex;gap:22px;font-size:14px;font-weight:600}
.nav-links a{text-decoration:none;color:var(--ink);opacity:.85}
.nav-links a:hover{opacity:1;color:var(--green)}
.nav-cta{display:flex;align-items:center;gap:14px}
.phone-link{font-weight:700;text-decoration:none;font-size:14px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:999px;font-weight:700;font-size:14px;text-decoration:none;border:1.5px solid var(--ink);white-space:nowrap}
.btn-primary{background:var(--ink);color:#F6F3EC}
.btn-primary:hover{background:var(--green);border-color:var(--green)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{border-color:var(--green);color:var(--green)}
main{padding:44px 0 60px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--green)}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--green);margin-bottom:10px}
h1{font-size:clamp(30px,4.6vw,44px);line-height:1.08;letter-spacing:-.02em;margin:0 0 16px;font-weight:800}
h1 em,h2 em{font-style:italic;color:var(--green)}
h2{font-size:clamp(22px,3vw,30px);line-height:1.15;letter-spacing:-.01em;margin:44px 0 12px;font-weight:800}
h3{font-size:18px;margin:22px 0 8px;font-weight:700}
p{margin:0 0 14px}
.lede{font-size:19px;line-height:1.5;color:#2B3650;max-width:760px}
.answer{background:var(--paper);border:1px solid var(--line);border-left:5px solid var(--green);border-radius:var(--r-md);padding:20px 22px;margin:22px 0 30px}
.answer p:last-child{margin:0}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px}
.card h3{margin-top:0}
.card.dng{border-top:4px solid var(--green)}
.card.them{border-top:4px solid #B8BCC6}
.card ul{margin:0;padding-left:18px}
.card li{margin:0 0 8px}
.compare{width:100%;border-collapse:collapse;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;font-size:15px}
.compare th,.compare td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
.compare th{background:#F1EDE3;font-size:13px;letter-spacing:.06em;text-transform:uppercase}
.compare tr:last-child td{border-bottom:0}
.compare td:first-child{font-weight:700;width:22%}
.compare td.dng{background:#F2FAF5}
ul.checks{padding-left:20px}
ul.checks li{margin:0 0 10px}
.faq-list{margin:10px 0 0}
details.faq{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-sm);padding:4px 18px;margin:0 0 10px}
details.faq summary{cursor:pointer;font-weight:700;font-size:17px;padding:12px 0;list-style:none;display:flex;justify-content:space-between;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-weight:400;font-size:22px;color:var(--green)}
details[open].faq summary::after{content:"\2212"}
details.faq p{padding:0 0 14px;margin:0;color:#2B3650}
.cta{background:var(--ink);color:#F6F3EC;border-radius:var(--r-md);padding:28px;margin:44px 0 0;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.cta h2{margin:0 0 6px;color:#F6F3EC}
.cta p{margin:0;opacity:.85}
.cta .btn-primary{background:var(--orange);border-color:var(--orange);color:#fff}
.cta .btn-primary:hover{background:#ff7d38;border-color:#ff7d38}
.sources{font-size:13px;color:var(--muted);border-top:1px solid var(--line);margin-top:40px;padding-top:16px}
.sources ol{padding-left:18px}
.sources a{color:var(--muted);word-break:break-all}
.fine{font-size:13px;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:28px 0 36px;font-size:14px;color:var(--muted)}
footer .foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--muted);text-decoration:none;margin-right:16px}
footer a:hover{color:var(--green)}
@media (max-width:760px){
  .nav-links{display:none}
  .grid{grid-template-columns:1fr}
  .compare{font-size:14px}
  .compare td:first-child{width:30%}
  main{padding-top:28px}
}