:root {
  --ink: #0c1117;
  --ink-2: #151c24;
  --steel-950: #11161c;
  --steel-900: #1a222b;
  --steel-800: #27313d;
  --steel-700: #3f4b58;
  --steel-500: #7b8791;
  --steel-300: #bbc3c9;
  --steel-200: #d7dde1;
  --steel-100: #eef1f3;
  --paper: #f7f8f8;
  --white: #fff;
  --navy: #172232;
  --wine: #7e2730;
  --wine-dark: #5d1820;
  --shadow: 0 24px 70px rgba(5, 9, 14, .14);
  --radius: 22px;
  --radius-sm: 14px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: fixed;
  z-index: 9999;
  left: 16px;
  top: -80px;
  background: var(--white);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 8px;
  transition: top .2s ease;
}
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(12,17,23,.94);
  border-bottom: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(14px);
}
.header-shell {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  min-height: 82px;
  display: grid;
  grid-template-columns: 190px 1fr auto;
  align-items: center;
  gap: 28px;
}
.brand {
  width: 178px;
  height: 58px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.24);
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
  background: #d8d9d7;
}
.brand img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.main-nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2.2vw, 30px);
}
.main-nav a {
  position: relative;
  color: #dce2e6;
  text-decoration: none;
  font-size: .86rem;
  font-weight: 750;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -9px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: right;
  background: linear-gradient(90deg, #b4bcc2, var(--wine));
  transition: transform .25s ease;
}
.main-nav a:hover::after,
.main-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.header-cta {
  text-decoration: none;
  color: var(--white);
  background: var(--wine);
  border: 1px solid rgba(255,255,255,.14);
  padding: 11px 16px;
  border-radius: 999px;
  font-weight: 800;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  transition: transform .2s ease, background .2s ease;
}
.header-cta:hover { transform: translateY(-2px); background: #91313b; }
.menu-toggle { display: none; }

.section { padding: 96px 24px; }
.section-dark {
  background:
    radial-gradient(circle at 12% 10%, rgba(126,39,48,.18), transparent 28%),
    radial-gradient(circle at 88% 86%, rgba(104,121,139,.16), transparent 30%),
    linear-gradient(130deg, #0b1016 0%, #19212a 53%, #0f151c 100%);
  color: var(--white);
}
.section-steel {
  color: var(--white);
  background:
    linear-gradient(110deg, rgba(255,255,255,.04), transparent 45%),
    repeating-linear-gradient(120deg, rgba(255,255,255,.025) 0 1px, transparent 1px 7px),
    #252e37;
}
.section-head {
  width: min(100%, 820px);
  margin: 0 auto 50px;
  text-align: center;
}
.section-head h2,
.specialty-copy h2,
.contact-copy h2,
.identity-copy h2,
.cta-band h2 {
  margin: 8px 0 16px;
  font-family: "Arial Narrow", "Roboto Condensed", Impact, sans-serif;
  font-size: clamp(2.15rem, 5vw, 4.5rem);
  line-height: .98;
  letter-spacing: .015em;
  text-transform: uppercase;
}
.section-head p:not(.eyebrow) { margin: 0 auto; max-width: 720px; color: #495460; font-size: 1.08rem; }
.eyebrow {
  margin: 0;
  color: #c6cdd2;
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.eyebrow.dark { color: var(--wine); }

.hero { position: relative; min-height: 720px; display: grid; align-items: center; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .38;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}
.hero-grid {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.16fr .84fr;
  gap: clamp(40px, 7vw, 100px);
  align-items: center;
}
.hero-copy h1 {
  max-width: 800px;
  margin: 12px 0 22px;
  font-family: "Arial Narrow", "Roboto Condensed", Impact, sans-serif;
  font-size: clamp(3.2rem, 7.8vw, 7.2rem);
  line-height: .86;
  letter-spacing: .01em;
  text-transform: uppercase;
  text-wrap: balance;
}
.hero-lead { max-width: 680px; color: #c8d0d6; font-size: clamp(1.06rem, 2vw, 1.32rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 19px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 850;
  letter-spacing: .04em;
  text-transform: uppercase;
  font-size: .82rem;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-3px); }
.btn-primary { color: white; background: linear-gradient(135deg, var(--wine), #9a3540); box-shadow: 0 13px 30px rgba(126,39,48,.3); }
.btn-ghost { color: white; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.25); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; max-width: 720px; }
.hero-tags span { color: #d5dbe0; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.04); border-radius: 999px; padding: 7px 11px; font-size: .8rem; }
.hero-visual { position: relative; aspect-ratio: 1; max-width: 460px; justify-self: center; width: 100%; }
.steel-orbit { position: absolute; border-radius: 50%; border: 1px solid rgba(255,255,255,.13); }
.orbit-a { inset: 6%; animation: spin 18s linear infinite; border-top-color: rgba(126,39,48,.75); }
.orbit-b { inset: 20%; animation: spinReverse 12s linear infinite; border-right-color: rgba(195,204,211,.7); }
.tube-stack { position: absolute; inset: 21%; display: grid; grid-template-columns: repeat(2,1fr); place-items: center; transform: rotate(-12deg); }
.tube-stack span {
  width: 112px;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 18px solid #85919b;
  background: radial-gradient(circle, #111821 0 48%, #4d5964 49% 57%, #a8b1b8 58% 62%, #63707a 63% 100%);
  box-shadow: inset 0 0 0 1px #cbd1d5, 10px 18px 35px rgba(0,0,0,.35);
}
.tube-stack span:nth-child(3) { grid-column: 1 / -1; margin-top: -18px; }
.tube-stack span:nth-child(4), .tube-stack span:nth-child(5) { width: 90px; margin-top: -28px; }
.hero-badge { position: absolute; right: 0; bottom: 8%; background: rgba(11,16,22,.78); border: 1px solid rgba(255,255,255,.17); padding: 16px 18px; border-radius: 16px; backdrop-filter: blur(10px); box-shadow: var(--shadow); }
.hero-badge strong, .hero-badge span { display: block; }
.hero-badge strong { color: #bfc7cd; font-size: .7rem; text-transform: uppercase; letter-spacing: .18em; }
.hero-badge span { font-size: 1.12rem; font-weight: 900; text-transform: uppercase; }
.hero-metal-line { position: absolute; bottom: 0; left: 0; right: 0; height: 7px; background: linear-gradient(90deg, #4f5b65, #c7cdd1, var(--wine), #6a747c); }

.intro { background: linear-gradient(180deg, #f6f7f8, #edf0f2); }
.statement { width: min(100%, var(--max)); margin: 0 auto 44px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 22px; }
.statement p { margin: 0; max-width: 780px; text-align: center; font-family: "Arial Narrow", Impact, sans-serif; color: var(--ink); font-size: clamp(1.15rem, 2.2vw, 1.72rem); letter-spacing: .04em; }
.statement-line { height: 1px; background: linear-gradient(90deg, transparent, #707b84); }
.statement-line:last-child { background: linear-gradient(90deg, #707b84, transparent); }
.intro-grid { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.info-panel { min-height: 310px; position: relative; overflow: hidden; padding: 34px; border-radius: var(--radius); background: #fff; border: 1px solid #d5dadd; box-shadow: var(--shadow); }
.info-panel::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 5px; background: linear-gradient(90deg, #6f7981, #cbd0d4); }
.panel-accent { color: #fff; background: linear-gradient(145deg, #1a222b, #0e141a); border-color: #343f49; }
.panel-accent::before { background: linear-gradient(90deg, var(--wine), #c5cbd0); }
.panel-kicker { color: var(--wine); font-weight: 850; text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; }
.panel-accent .panel-kicker { color: #d6a7ac; }
.info-panel h3 { margin: 10px 0 16px; font-size: clamp(1.55rem, 3vw, 2.2rem); line-height: 1.08; }
.info-panel p:last-child { color: #5b6570; font-size: 1rem; }
.panel-accent p:last-child { color: #c4ccd1; }

.specialty-grid { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.specialty-copy > p:not(.eyebrow) { color: #c7cdd2; max-width: 690px; font-size: 1.08rem; }
.feature-groups { display: grid; gap: 10px; margin-top: 34px; }
.feature-groups > div { padding: 18px 20px; border-left: 2px solid var(--wine); background: rgba(255,255,255,.045); border-radius: 0 12px 12px 0; }
.feature-groups span, .feature-groups strong { display: block; }
.feature-groups span { color: #9ba6af; font-size: .72rem; text-transform: uppercase; letter-spacing: .15em; margin-bottom: 4px; }
.feature-groups strong { color: #eef1f3; }
.pipe-graphic { position: relative; aspect-ratio: 1; width: min(100%, 500px); margin: 0 auto; }
.pipe { position: absolute; border-radius: 50%; border: 2px solid rgba(255,255,255,.16); display: grid; place-items: center; box-shadow: inset 0 0 50px rgba(255,255,255,.04); }
.pipe i { display: block; border-radius: 50%; border: 8px solid #7b8791; background: #151d25; box-shadow: inset 0 0 0 2px #c1c8ce; }
.pipe-1 { width: 46%; aspect-ratio: 1; left: 7%; top: 6%; }
.pipe-1 i { width: 68%; aspect-ratio: 1; }
.pipe-2 { width: 33%; aspect-ratio: 1; right: 8%; top: 15%; }
.pipe-2 i { width: 64%; aspect-ratio: 1; }
.pipe-3 { width: 38%; aspect-ratio: 1; left: 3%; bottom: 8%; }
.pipe-3 i { width: 61%; aspect-ratio: 1; }
.pipe-4 { width: 50%; aspect-ratio: 1; right: 0; bottom: 2%; }
.pipe-4 i { width: 72%; aspect-ratio: 1; }
.pipe-center { position: absolute; inset: 39% 34%; display: grid; place-items: center; z-index: 5; border-radius: 50%; color: #fff; font-weight: 900; letter-spacing: .12em; background: var(--wine); box-shadow: 0 20px 45px rgba(0,0,0,.3); }

.fabrication { background: #fff; }
.fabrication-grid { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.fabrication-card { position: relative; min-height: 340px; overflow: hidden; padding: 30px; border-radius: var(--radius); border: 1px solid #d8dde0; background: linear-gradient(145deg, #fbfbfb, #edf0f2); box-shadow: 0 20px 50px rgba(16,25,33,.08); transition: transform .25s ease, box-shadow .25s ease; }
.fabrication-card:hover { transform: translateY(-8px); box-shadow: 0 30px 70px rgba(16,25,33,.14); }
.card-number { position: absolute; right: 24px; top: 18px; color: #c9cfd3; font-family: Impact, sans-serif; font-size: 2.7rem; }
.profile-shape { height: 122px; margin: 26px 0 34px; position: relative; }
.profile-c::before { content: ""; position: absolute; left: 12%; top: 16px; width: 72%; height: 82px; border: 18px solid #5d6872; border-right-width: 6px; border-radius: 15px 3px 3px 15px; transform: perspective(500px) rotateX(18deg) rotateY(-18deg); box-shadow: 10px 15px 20px rgba(0,0,0,.12); }
.profile-wave::before { content: ""; position: absolute; inset: 25px 5% auto; height: 58px; background: repeating-linear-gradient(115deg, #69747d 0 18px, #b6bdc2 18px 36px); transform: skewX(-8deg); box-shadow: 0 15px 25px rgba(0,0,0,.14); }
.profile-deck::before { content: ""; position: absolute; inset: 17px 7% auto; height: 75px; background: repeating-linear-gradient(70deg, #59656e 0 14px, #aeb6bc 14px 27px, #59656e 27px 39px); clip-path: polygon(0 14%, 100% 0, 100% 86%, 0 100%); box-shadow: 0 15px 25px rgba(0,0,0,.14); }
.fabrication-card h3 { margin: 0 0 10px; font-size: 1.6rem; }
.fabrication-card p { margin: 0; color: #5a6570; }
.fabrication-note { width: min(100%, var(--max)); margin: 26px auto 0; padding: 18px 22px; text-align: center; color: #fff; background: linear-gradient(90deg, #1c252e, var(--wine), #1c252e); border-radius: var(--radius-sm); font-weight: 900; letter-spacing: .035em; }

.products { background: linear-gradient(180deg, #eef1f2, #f8f9f9); }
.product-grid { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: repeat(5,1fr); gap: 14px; }
.product-card { min-height: 168px; padding: 22px 14px; border-radius: 18px; background: #fff; border: 1px solid #d9dee1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; box-shadow: 0 14px 30px rgba(16,25,33,.06); transition: transform .22s ease, border-color .22s ease; }
.product-card:hover { transform: translateY(-6px); border-color: #919ca5; }
.product-card h3 { margin: 0; text-align: center; font-size: 1rem; }
.mini-icon { display: block; width: 62px; height: 62px; position: relative; }
.mini-icon::before, .mini-icon::after { content: ""; position: absolute; }
.plate::before { inset: 14px 6px; background: linear-gradient(145deg, #9ca6ae, #505b64); transform: skewY(-8deg); border-radius: 4px; }
.beam::before { left: 27px; top: 6px; width: 9px; height: 50px; background: #5d6871; }
.beam::after { left: 8px; top: 5px; width: 47px; height: 10px; background: #89939b; box-shadow: 0 42px 0 #89939b; }
.channel::before { inset: 7px 12px; border: 10px solid #65717a; border-right: 0; border-radius: 5px 0 0 5px; }
.hss::before { inset: 8px; border: 9px solid #68747e; border-radius: 5px; box-shadow: inset 0 0 0 2px #aab2b8; }
.roundtube::before { inset: 7px; border: 11px solid #67737d; border-radius: 50%; box-shadow: inset 0 0 0 2px #bbc2c7; }
.ptr::before { inset: 10px; border: 9px solid #5f6b75; border-radius: 3px; }
.polin::before { inset: 10px 11px; border: 9px solid #5e6a73; border-right-width: 4px; border-radius: 7px 2px 2px 7px; }
.flat::before { left: 8px; right: 8px; top: 27px; height: 12px; background: linear-gradient(90deg, #505b64, #9aa3aa, #505b64); border-radius: 4px; }
.angle::before { left: 17px; top: 10px; width: 12px; height: 42px; background: #5f6b74; box-shadow: 14px 30px 0 0 #879199; transform: skewY(-18deg); }
.solidround::before { inset: 12px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #b6bdc2, #5c6770 70%); }

.identity { padding-top: 86px; padding-bottom: 86px; }
.identity-grid { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: center; }
.identity-copy p:not(.eyebrow) { color: #c7cdd2; }
.identity-name { margin-top: 25px; font-weight: 900; }
.identity-name span { display: block; color: #d8a9af; font-size: .8rem; letter-spacing: .15em; }
.identity-card { margin: 0; padding: 12px; border-radius: 18px; border: 1px solid rgba(255,255,255,.28); background: rgba(255,255,255,.06); box-shadow: 0 28px 65px rgba(0,0,0,.3); }
.identity-card img { width: 100%; border-radius: 11px; filter: drop-shadow(0 14px 24px rgba(0,0,0,.25)); }

.contact { background: #fff; }
.contact-grid { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: .72fr 1.28fr; gap: 45px; align-items: start; }
.contact-copy h2 { font-size: clamp(2.1rem, 4.8vw, 4rem); }
.contact-copy p:not(.eyebrow):not(.contact-role) { color: #65707a; }
.contact-role { display: inline-block; margin: 0 0 18px; color: #fff; background: var(--wine); padding: 6px 10px; border-radius: 6px; font-weight: 900; font-size: .76rem; letter-spacing: .15em; }
.contact-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
.contact-item { min-height: 118px; padding: 20px; text-decoration: none; border-radius: 16px; border: 1px solid #d8dde0; background: #f7f8f9; display: flex; flex-direction: column; justify-content: center; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
a.contact-item:hover { transform: translateY(-4px); border-color: #8b969f; background: #fff; }
.contact-item span { color: var(--wine); font-weight: 850; font-size: .68rem; letter-spacing: .14em; }
.contact-item strong { font-size: 1.25rem; overflow-wrap: anywhere; }
.contact-item small { color: #68737c; }
.contact-item.email { grid-column: 1 / -1; }
.location-card { width: min(100%, var(--max)); margin: 24px auto 0; padding: 28px 32px; border-radius: var(--radius); border: 1px solid #d8dde0; background: linear-gradient(120deg, #eef1f3, #fff); display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; box-shadow: 0 18px 45px rgba(16,25,33,.07); }
.location-card h3 { margin: 7px 0 0; font-size: 1.75rem; }
.location-card address { font-style: normal; color: #4f5a64; text-align: right; }

.cta-band { padding: 70px 24px; color: #fff; background: linear-gradient(110deg, #111820, #28333d 58%, #651d25); }
.cta-band-inner { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.cta-band p { color: #bfc7cd; margin: 0 0 8px; }
.cta-band h2 { font-size: clamp(2rem, 4.6vw, 3.8rem); margin-bottom: 8px; }
.cta-band strong { color: #e9d0d3; }
.cta-band-actions { display: flex; flex-direction: column; min-width: 180px; gap: 10px; }

.site-footer { color: #bcc4ca; background: #090d12; padding: 42px 24px 82px; border-top: 1px solid #26313a; }
.footer-grid { width: min(100%, var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1.1fr 1fr .85fr; gap: 30px; align-items: start; }
.site-footer strong { color: #fff; font-size: 1.2rem; }
.site-footer p { margin: 8px 0 0; font-size: .9rem; }
.site-footer a { color: #fff; overflow-wrap: anywhere; }

.mobile-actions { display: none; }
.back-to-top { position: fixed; z-index: 900; right: 20px; bottom: 20px; width: 46px; height: 46px; border: 0; border-radius: 50%; color: #fff; background: var(--wine); font-size: 1.2rem; font-weight: 900; cursor: pointer; opacity: 0; transform: translateY(15px); pointer-events: none; transition: .25s ease; box-shadow: 0 14px 30px rgba(0,0,0,.23); }
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }

.reveal { opacity: 1; transform: none; }
.reveal.reveal-ready { opacity: 0; transform: translateY(28px); transition: opacity .72s ease, transform .72s ease; }
.reveal-delay-1 { transition-delay: .12s; }
.reveal-delay-2 { transition-delay: .22s; }
.reveal.reveal-ready.visible { opacity: 1; transform: translateY(0); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spinReverse { to { transform: rotate(-360deg); } }

@media (max-width: 1020px) {
  .header-shell { grid-template-columns: 170px 1fr auto; gap: 18px; }
  .brand { width: 160px; }
  .main-nav { gap: 14px; }
  .main-nav a { font-size: .72rem; }
  .header-cta { display: none; }
  .hero { min-height: auto; padding: 80px 0 90px; }
  .hero-grid, .specialty-grid { grid-template-columns: 1fr; }
  .hero-visual { width: min(82vw, 430px); }
  .specialty-copy { max-width: 800px; }
  .fabrication-grid { grid-template-columns: 1fr 1fr; }
  .fabrication-card:last-child { grid-column: 1 / -1; }
  .product-grid { grid-template-columns: repeat(3,1fr); }
  .identity-grid, .contact-grid { grid-template-columns: 1fr; }
  .identity-copy { max-width: 760px; }
  .cta-band-inner { grid-template-columns: 1fr; }
  .cta-band-actions { flex-direction: row; min-width: 0; }
}

@media (max-width: 760px) {
  .section { padding: 72px 18px; }
  .header-shell { width: min(calc(100% - 24px), var(--max)); min-height: 74px; grid-template-columns: 1fr auto; }
  .brand { width: 152px; height: 52px; }
  .menu-toggle { display: grid; width: 46px; height: 46px; place-content: center; gap: 5px; border: 1px solid rgba(255,255,255,.2); border-radius: 12px; background: transparent; cursor: pointer; }
  .menu-toggle span { width: 22px; height: 2px; background: #fff; transition: transform .25s ease, opacity .25s ease; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .main-nav { position: fixed; inset: 74px 0 auto 0; max-height: 0; overflow: hidden; flex-direction: column; gap: 0; padding: 0 18px; background: rgba(10,14,19,.985); border-bottom: 1px solid rgba(255,255,255,.08); transition: max-height .32s ease, padding .32s ease; }
  .main-nav.open { max-height: 420px; padding-top: 12px; padding-bottom: 18px; }
  .main-nav a { padding: 14px 4px; font-size: .86rem; border-bottom: 1px solid rgba(255,255,255,.08); }
  .main-nav a::after { display: none; }

  .hero { padding: 60px 0 72px; }
  .hero-grid { width: min(calc(100% - 36px), var(--max)); gap: 34px; }
  .hero-copy h1 { font-size: clamp(3rem, 14vw, 5.3rem); }
  .hero-lead { font-size: 1rem; }
  .hero-actions .btn { flex: 1 1 180px; }
  .hero-visual { width: min(92vw, 360px); }
  .tube-stack span { width: 90px; border-width: 14px; }
  .tube-stack span:nth-child(4), .tube-stack span:nth-child(5) { width: 72px; }
  .hero-badge { right: 2%; bottom: 2%; }

  .statement { grid-template-columns: 1fr; gap: 12px; }
  .statement-line { display: none; }
  .intro-grid { grid-template-columns: 1fr; }
  .info-panel { min-height: auto; }
  .specialty-grid { gap: 35px; }
  .pipe-graphic { width: min(92vw, 400px); }
  .fabrication-grid { grid-template-columns: 1fr; }
  .fabrication-card:last-child { grid-column: auto; }
  .product-grid { grid-template-columns: repeat(2,1fr); }
  .product-card { min-height: 148px; }
  .identity-grid { gap: 28px; }
  .contact-list { grid-template-columns: 1fr; }
  .contact-item.email { grid-column: auto; }
  .location-card { grid-template-columns: 1fr; padding: 24px; }
  .location-card address { text-align: left; }
  .cta-band { padding: 58px 18px; }
  .cta-band-actions { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }

  .mobile-actions { position: fixed; z-index: 950; left: 12px; right: 12px; bottom: 10px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 7px; border-radius: 16px; background: rgba(10,14,19,.92); border: 1px solid rgba(255,255,255,.11); backdrop-filter: blur(12px); box-shadow: 0 12px 36px rgba(0,0,0,.27); }
  .mobile-actions a { padding: 11px 10px; text-align: center; text-decoration: none; border-radius: 11px; color: #fff; background: #232d36; font-weight: 850; font-size: .85rem; }
  .mobile-actions a:first-child { background: var(--wine); }
  .back-to-top { bottom: 84px; right: 16px; }
}

@media (max-width: 430px) {
  .hero-copy h1 { font-size: 2.75rem; }
  .section-head h2, .specialty-copy h2, .contact-copy h2, .identity-copy h2, .cta-band h2 { font-size: 2.35rem; }
  .product-grid { gap: 10px; }
  .product-card { padding: 18px 8px; }
  .mini-icon { width: 54px; height: 54px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal, .reveal.reveal-ready { opacity: 1; transform: none; }
}