/* ANT HVAC & ELECTRIC — editorial industrial system (ANT brand family) */
@font-face { font-family: 'Big Shoulders Display'; src: url('fonts/bigshoulders-800.woff2') format('woff2'); font-weight: 800; font-display: swap; }
@font-face { font-family: 'Libre Franklin'; src: url('fonts/librefranklin-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Libre Franklin'; src: url('fonts/librefranklin-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }

:root {
  --ink: #16181d;
  --paper: #f7f5f0;
  --line: #d8d4ca;
  --accent: #c8451b;      /* safety-orange, trade heritage */
  --accent-dark: #a53712;
  --steel: #4a5058;
  --ok: #1f7a4d;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Libre Franklin', system-ui, sans-serif;
  background: var(--paper); color: var(--ink);
  line-height: 1.65; font-size: 17px;
}
h1, h2, h3, .display {
  font-family: 'Big Shoulders Display', 'Arial Narrow', sans-serif;
  font-weight: 800; text-transform: uppercase; letter-spacing: 0.01em;
  line-height: 1.05;
}
a { color: var(--accent-dark); }
img { max-width: 100%; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 22px; }

/* header */
header {
  border-bottom: 3px solid var(--ink); background: var(--paper);
  position: sticky; top: 0; z-index: 50;
}
.nav { display: flex; align-items: center; gap: 18px; padding: 14px 0; }
.nav .brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.nav .brand img { width: 34px; height: 34px; }
.nav .brand span { font-family: 'Big Shoulders Display'; font-weight: 800; font-size: 20px; letter-spacing: 0.04em; }
.nav nav { margin-left: auto; display: flex; gap: 20px; }
.nav nav a { text-decoration: none; color: var(--ink); font-size: 14px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.nav nav a:hover { color: var(--accent); }
.nav .cta {
  background: var(--accent); color: #fff !important; padding: 9px 18px;
  border: 2px solid var(--ink); box-shadow: 3px 3px 0 var(--ink);
}
.nav .cta:hover { background: var(--accent-dark); color: #fff; }

/* hero */
.hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); }
.hero .kicker {
  font-size: 13px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-dark); margin-bottom: 14px;
}
.hero h1 { font-size: clamp(42px, 7vw, 76px); max-width: 850px; }
.hero p.lede { font-size: 20px; color: var(--steel); max-width: 620px; margin: 20px 0 30px; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  font-weight: 600; font-size: 15px; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 14px 28px; border: 2px solid var(--ink); box-shadow: 4px 4px 0 var(--ink);
  transition: transform 0.1s;
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink); }
.btn.ghost { background: transparent; color: var(--ink); margin-left: 14px; }

/* sections */
section { padding: 56px 0; }
section + section { border-top: 1px solid var(--line); }
h2 { font-size: clamp(30px, 4.5vw, 44px); margin-bottom: 8px; }
.section-kicker { font-size: 12px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent-dark); }
.section-sub { color: var(--steel); max-width: 640px; margin-bottom: 32px; }

.grid { display: grid; gap: 22px; }
.grid.c3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  background: #fff; border: 2px solid var(--ink); padding: 24px;
  box-shadow: 4px 4px 0 var(--line);
}
.card h3 { font-size: 22px; margin-bottom: 8px; }
.card p { font-size: 15px; color: var(--steel); }
.card .tag {
  display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent-dark); border: 1px solid var(--accent-dark);
  padding: 2px 8px; margin-bottom: 12px;
}
.card a.more { font-size: 14px; font-weight: 600; }

/* trust strip */
.trust { display: flex; flex-wrap: wrap; gap: 14px 34px; padding: 22px 0; font-size: 14px; font-weight: 600; color: var(--steel); }
.trust span::before { content: '■ '; color: var(--accent); }

/* article/prose pages */
.prose { max-width: 720px; padding: 56px 0; }
.prose h1 { font-size: clamp(34px, 5vw, 54px); margin-bottom: 12px; }
.prose h2 { font-size: 28px; margin: 36px 0 10px; }
.prose p { margin: 14px 0; }
.prose ul, .prose ol { margin: 14px 0 14px 26px; }
.prose .byline { font-size: 14px; color: var(--steel); border-bottom: 1px solid var(--line); padding-bottom: 16px; margin-bottom: 8px; }
.prose h3 { font-size: 21px; margin: 26px 0 8px; }
.table-scroll { overflow-x: auto; margin: 18px 0; }
.prose table { border-collapse: collapse; width: 100%; font-size: 14.5px; background: #fff; border: 2px solid var(--ink); }
.prose th, .prose td { padding: 9px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { font-family: 'Libre Franklin'; font-weight: 600; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; background: var(--paper); }
.prose tr.total td { font-weight: 600; background: #fdf3ef; }
.prose .warn {
  border-left: 6px solid #b3261e; background: #fff5f4; border-top: 1px solid var(--line);
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 18px 22px; margin: 22px 0; font-size: 15.5px;
}

/* form */
form.quote { max-width: 560px; display: grid; gap: 16px; }
form.quote label { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
form.quote input, form.quote select, form.quote textarea {
  width: 100%; padding: 12px; font-size: 16px; font-family: inherit;
  border: 2px solid var(--ink); background: #fff; margin-top: 6px;
}
form.quote input:focus, form.quote select:focus, form.quote textarea:focus { outline: 3px solid var(--accent); outline-offset: 0; }
form.quote button { cursor: pointer; }
.form-note { font-size: 13px; color: var(--steel); }

/* callout */
.callout {
  border-left: 6px solid var(--accent); background: #fff; border-top: 1px solid var(--line);
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 18px 22px; margin: 22px 0; font-size: 15px;
}

/* footer */
footer { border-top: 3px solid var(--ink); padding: 36px 0 44px; font-size: 14px; color: var(--steel); }
footer .cols { display: flex; flex-wrap: wrap; gap: 30px 60px; }
footer a { color: var(--steel); }
footer .brandline { font-family: 'Big Shoulders Display'; font-weight: 800; font-size: 18px; color: var(--ink); letter-spacing: 0.04em; }

@media (max-width: 640px) {
  .nav nav { display: none; }
  .btn.ghost { margin-left: 0; margin-top: 12px; }
}