:root {
  --bg: #14171a;
  --bg-alt: #1b1f23;
  --panel: #22272c;
  --line: #333a41;
  --text: #e9ecee;
  --muted: #a3acb4;
  --hot: #ff7a1a;
  --hot-dark: #d95f00;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

a { color: inherit; }

h1, h2, h3 {
  margin: 0 0 .5em;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2.5rem, 7vw, 4.75rem); text-transform: uppercase; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.hot { color: var(--hot); }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--hot); color: #000; padding: 8px 12px; z-index: 100;
}
.skip:focus { left: 8px; top: 8px; }

.eyebrow {
  margin: 0 0 .75em;
  color: var(--hot);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 24px;
  border: 2px solid var(--hot);
  border-radius: 4px;
  background: var(--hot);
  color: #14171a;
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { background: var(--hot-dark); border-color: var(--hot-dark); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { background: transparent; border-color: var(--hot); color: var(--hot); }
.btn-small { padding: 8px 14px; }

:focus-visible { outline: 3px solid var(--hot); outline-offset: 2px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 23, 26, .95);
  border-bottom: 1px solid var(--line);
}
.header-row {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px; gap: 16px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; letter-spacing: .04em; text-decoration: none;
}
.brand-mark { width: 30px; height: 30px; color: var(--hot); }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a:not(.btn) { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav a:not(.btn):hover { color: var(--text); }
.nav-toggle {
  display: none;
  padding: 8px 14px;
  border: 1px solid var(--line); border-radius: 4px;
  background: none; color: var(--text); font: inherit; font-weight: 700;
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(64px, 12vw, 140px) 0;
  background:
    radial-gradient(60% 80% at 85% 100%, rgba(255, 122, 26, .22), transparent 70%),
    repeating-linear-gradient(135deg, transparent 0 22px, rgba(255, 255, 255, .018) 22px 23px),
    var(--bg);
  overflow: hidden;
}
.hero-inner { position: relative; }
.lead { max-width: 34em; font-size: 1.2rem; color: var(--muted); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.weld-line {
  position: absolute; left: 0; right: 0; bottom: 0; height: 4px;
  background: linear-gradient(90deg, transparent, var(--hot) 30%, #ffd08a 50%, var(--hot) 70%, transparent);
}

/* Trust strip */
.strip { background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.strip-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  padding-top: 24px; padding-bottom: 24px;
}
.strip-row strong { display: block; }
.strip-row span { color: var(--muted); font-size: .9rem; }

/* Sections */
.section { padding: clamp(56px, 9vw, 96px) 0; }
.section-alt { background: var(--bg-alt); }

.cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  margin-top: 32px;
}
.card {
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--hot);
  border-radius: 4px;
}
.card svg { width: 44px; height: 44px; margin-bottom: 16px; color: var(--hot); }
.card p { color: var(--muted); }
.card ul { margin: 0; padding-left: 1.1em; }
.card li { margin-bottom: .25em; }

.gallery {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-top: 32px;
}
.gallery figure { margin: 0; }
.gallery img, .ph {
  display: block; width: 100%; aspect-ratio: 4 / 5;
  object-fit: cover; border-radius: 4px;
}
.ph {
  display: grid; place-items: center;
  border: 1px dashed var(--line);
  background: repeating-linear-gradient(45deg, var(--panel) 0 12px, var(--bg-alt) 12px 24px);
  color: var(--muted); font-size: .85rem; letter-spacing: .1em; text-transform: uppercase;
}
.gallery figcaption { margin-top: 8px; color: var(--muted); font-size: .9rem; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }

.steps { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps li {
  position: relative;
  padding: 0 0 24px 56px;
  counter-increment: step;
}
.steps li::before {
  content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 2px solid var(--hot); border-radius: 50%;
  color: var(--hot); font-weight: 800;
}
.steps strong { display: block; }
.steps span { color: var(--muted); }

/* Contact */
.contact-list { display: grid; grid-template-columns: auto 1fr; gap: 10px 20px; margin: 24px 0 0; }
.contact-list dt { color: var(--muted); font-weight: 600; }
.contact-list dd { margin: 0; }
.contact-list a { color: var(--hot); font-weight: 700; text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }

.quote {
  display: grid; gap: 16px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.quote label { display: grid; gap: 6px; font-weight: 600; font-size: .95rem; }
.quote input, .quote select, .quote textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line); border-radius: 4px;
  background: var(--bg); color: var(--text);
  font: inherit;
}
.quote textarea { resize: vertical; }
.form-note { margin: 0; color: var(--muted); font-size: .85rem; }
.form-note.ok { color: #7ddc8a; font-size: 1rem; font-weight: 700; }
.form-note.err { color: #ff8a80; font-size: 1rem; font-weight: 700; }
.hp { position: absolute; left: -9999px; }
.quote button:disabled { opacity: .6; cursor: default; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.footer-row { display: flex; justify-content: space-between; gap: 16px; padding-top: 24px; padding-bottom: 24px; }
.site-footer a { text-decoration: none; }

@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 680px) {
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px 16px 16px;
    background: var(--bg); border-bottom: 1px solid var(--line);
  }
  .nav.open { display: flex; }
  .nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 12px; text-align: center; }
  .strip-row { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .cta-row .btn { flex: 1 1 100%; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}