:root {
  --ink: #15191d;
  --navy: #09131f;
  --navy-2: #101d2a;
  --paper: #ffffff;
  --warm: #f6f4ef;
  --warm-2: #ece8df;
  --steel: #66727d;
  --steel-2: #9aa3aa;
  --line: #d8dde2;
  --line-dark: rgba(255, 255, 255, 0.14);
  --gold: #b78b45;
  --gold-2: #8d6934;
  --green: #1f7754;
  --shadow: 0 18px 44px rgba(9, 19, 31, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.62;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.topbar {
  color: #c6d0d8;
  background: #050b12;
  border-bottom: 1px solid var(--line-dark);
  font-size: 12px;
}
.topbar .container { display: flex; justify-content: space-between; gap: 18px; padding: 7px 0; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--paper);
  background: rgba(9, 19, 31, 0.98);
  border-bottom: 1px solid var(--line-dark);
  transition: box-shadow .2s ease;
}
.site-header.is-scrolled { box-shadow: 0 12px 34px rgba(0,0,0,.24); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 22px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 224px; }
.brand-mark {
  display: grid; place-items: center;
  width: 42px; height: 42px;
  color: var(--navy); background: var(--gold);
  font-weight: 800;
}
.brand-name { display: block; color: var(--paper); font-size: 20px; font-weight: 800; line-height: 1; }
.brand-line { display: block; margin-top: 4px; color: #aeb9c2; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.nav-toggle {
  display: none;
  min-width: 44px; height: 40px; padding: 0 10px;
  color: var(--paper); background: transparent; border: 1px solid var(--line-dark);
  font: inherit;
}
.nav-menu { display: flex; align-items: center; gap: 21px; color: #dce4ea; font-size: 14px; font-weight: 700; }
.nav-menu a { padding: 23px 0; }
.nav-menu a:hover, .nav-menu a.active { color: var(--gold); }
.header-actions { display: flex; align-items: center; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 12px 18px;
  border: 1px solid transparent; border-radius: 0;
  font-size: 14px; font-weight: 800; line-height: 1.2;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: var(--navy); background: var(--gold); }
.btn-primary:hover { background: #c49a55; }
.btn-outline { color: var(--paper); background: transparent; border-color: rgba(255,255,255,.46); }
.btn-outline:hover { border-color: var(--paper); }
.btn-outline-dark { color: var(--navy); background: transparent; border-color: var(--navy); }
.btn-whatsapp { color: var(--paper); background: var(--green); }

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
}
h1, h2, h3 { margin: 0; color: var(--navy); line-height: 1.08; }
h1 { font-size: clamp(42px, 6vw, 76px); }
h2 { font-size: clamp(30px, 4vw, 46px); }
h3 { font-size: 21px; }
p { margin-top: 0; }

.hero, .landing-hero { color: var(--paper); background: var(--navy); }
.landing-hero { background: linear-gradient(90deg, rgba(9,19,31,.94), rgba(9,19,31,.72)), url("../images/large-diameter-bolts-hero.webp") center/cover no-repeat; }
.hero > .container:not(.hero-process), .landing-hero-grid {
  display: grid;
  grid-template-columns: minmax(0,.92fr) minmax(360px,.86fr);
  gap: 50px;
  align-items: center;
  min-height: 690px;
  padding: 76px 0 58px;
}
.landing-hero-grid { grid-template-columns: minmax(0,1fr) minmax(340px,.62fr); }
.hero h1, .landing-hero h1 { max-width: 900px; color: var(--paper); }
.hero p, .landing-hero p, .page-hero p { max-width: 780px; margin: 22px 0 0; color: #d1dbe3; font-size: 18px; }
.hero-actions, .cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-media, .landing-rfq-card {
  border: 1px solid var(--line-dark);
  background: rgba(255,255,255,.045);
  box-shadow: 0 28px 70px rgba(0,0,0,.24);
}
.hero-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.hero-process {
  display: grid; grid-template-columns: repeat(4,minmax(0,1fr));
  gap: 1px; padding: 0 0 38px; min-height: auto; align-items: stretch;
}
.hero-process div { min-height: 106px; padding: 22px; background: rgba(255,255,255,.06); border-top: 2px solid var(--gold); }
.hero-process strong, .hero-process span { display: block; }
.hero-process strong { color: var(--paper); font-size: 23px; line-height: 1.15; }
.hero-process span { margin-top: 8px; color: #b8c3cc; }

.page-hero {
  color: var(--paper);
  background: linear-gradient(90deg, rgba(9,19,31,.94), rgba(9,19,31,.72)), url("../images/factory-workshop.webp") center/cover no-repeat;
}
.page-hero .container { padding: 98px 0; }
.page-hero h1 { max-width: 900px; color: var(--paper); font-size: clamp(38px, 5vw, 60px); }
.page-hero-cta { margin-top: 28px; }

.section { padding: 88px 0; }
.section.alt { background: var(--warm); }
.section.dark { color: var(--paper); background: var(--navy); }
.section.dark h2, .section.dark h3 { color: var(--paper); }
.section.dark p, .section.dark li { color: #c7d1da; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 34px; }
.section-head p { max-width: 700px; margin: 14px 0 0; color: var(--steel); }
.section.dark .section-head p { color: #c7d1da; }

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2,minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3,minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4,minmax(0,1fr)); }
.card, .process-card, .proof-item, .contact-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 0;
  box-shadow: 0 10px 28px rgba(9,19,31,.06);
}
.card { overflow: hidden; }
.card-body { padding: 24px; }
.card p, .process-card p, .proof-item span { margin: 12px 0 0; color: var(--steel); }
.card-link { display: inline-flex; margin-top: 18px; color: var(--gold-2); font-weight: 800; }
.media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  height: auto;
  object-fit: cover;
  background: var(--warm-2);
  transition: transform .28s ease;
}
.media-card:hover { border-color: var(--gold); }
.media-card:hover img { transform: scale(1.025); }
.section.dark .card, .section.dark .process-card, .section.dark .proof-item { background: rgba(255,255,255,.045); border-color: var(--line-dark); box-shadow: none; }
.section.dark .card p, .section.dark .process-card p, .section.dark .proof-item span { color: #c7d1da; }

.process-card { min-height: 238px; padding: 28px; border-top: 3px solid var(--gold); }
.process-card span { display: block; margin-bottom: 22px; color: var(--gold-2); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.supply-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
.supply-grid a {
  display: block; padding: 18px 20px;
  color: var(--navy); background: var(--paper);
  border: 1px solid var(--line); border-left: 3px solid var(--gold);
  font-weight: 800;
}
.supply-grid a:hover { border-color: var(--gold); }
.feature-list { display: grid; gap: 12px; padding: 0; margin: 20px 0 0; list-style: none; }
.feature-list li { position: relative; padding-left: 20px; }
.feature-list li::before { position: absolute; left: 0; top: .66em; width: 7px; height: 7px; background: var(--gold); content: ""; }

.keyword-strip { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.keyword-strip span { padding: 8px 10px; color: #dce5ec; border: 1px solid var(--line-dark); font-size: 13px; font-weight: 700; }
.landing-rfq-card { padding: 28px; color: var(--paper); }
.landing-rfq-card h2 { color: var(--paper); font-size: 25px; }
.landing-rfq-card p, .landing-rfq-card li { color: #cbd6de; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--paper); }
table { width: 100%; min-width: 760px; border-collapse: collapse; }
th, td { padding: 15px 18px; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--paper); background: var(--navy); }
td { color: var(--steel); }
.split { display: grid; grid-template-columns: minmax(0,1fr) minmax(320px,.86fr); gap: 48px; align-items: center; }
.split img, .factory-photo { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border: 1px solid var(--line); background: var(--warm-2); }
.mini-grid { margin-top: 26px; }
.proof-item { padding: 20px; border-left: 3px solid var(--gold); }
.proof-item strong, .proof-item span { display: block; }
.stat-band { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); border: 1px solid var(--line-dark); }
.stat { padding: 26px; border-right: 1px solid var(--line-dark); background: rgba(255,255,255,.04); }
.stat:last-child { border-right: 0; }
.stat strong { display: block; color: var(--gold); font-size: 28px; line-height: 1.05; }
.stat span { display: block; margin-top: 10px; color: #c7d1da; }

.rfq-layout { display: grid; grid-template-columns: minmax(0,.86fr) minmax(380px,.92fr); gap: 44px; align-items: start; }
.contact-panel { padding: 30px; }
.contact-panel label { display: block; margin-bottom: 6px; color: var(--navy); font-size: 13px; font-weight: 800; }
.contact-panel input, .contact-panel textarea, .contact-panel select {
  width: 100%; min-height: 44px; margin-bottom: 16px; padding: 11px 12px;
  color: var(--ink); background: #fbfbfa; border: 1px solid var(--line); border-radius: 0; font: inherit;
}
.contact-panel textarea { min-height: 134px; resize: vertical; }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 14px; }
.form-note { margin: 0 0 18px; padding: 12px 14px; color: var(--navy); background: #f7f1e7; border-left: 3px solid var(--gold); font-size: 14px; }

.cta, .whatsapp-cta { color: var(--paper); background: var(--navy); }
.cta .container, .whatsapp-cta .container { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 58px 0; }
.cta h2, .whatsapp-cta h2 { color: var(--paper); }
.cta p, .whatsapp-cta p { max-width: 760px; margin: 12px 0 0; color: #cbd6de; }
.site-footer { color: #cbd6de; background: #050b12; }
.footer-main { display: grid; grid-template-columns: 1.2fr .8fr .8fr 1fr; gap: 34px; padding: 58px 0; }
.site-footer h3 { color: var(--paper); font-size: 17px; }
.site-footer p, .site-footer li { color: #9facb7; }
.site-footer ul { display: grid; gap: 8px; padding: 0; margin: 16px 0 0; list-style: none; }
.footer-bottom { padding: 18px 0; border-top: 1px solid var(--line-dark); color: #8d9aa5; font-size: 13px; }
.floating-whatsapp {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 42px; padding: 11px 14px;
  color: var(--paper); background: var(--green);
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 14px 32px rgba(0,0,0,.22);
  font-size: 13px; font-weight: 800;
}

@media (max-width: 1040px) {
  .hero > .container:not(.hero-process), .landing-hero-grid, .split, .rfq-layout { grid-template-columns: 1fr; }
  .grid-4, .grid-3, .hero-process { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-main { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .header-actions .btn { min-height: 38px; width: auto; padding: 10px 12px; white-space: nowrap; }
}
@media (max-width: 820px) {
  .topbar .container { display: block; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-menu {
    position: absolute; left: 0; right: 0; top: 100%;
    display: none; flex-direction: column; align-items: stretch; gap: 0;
    padding: 10px 20px 18px; background: var(--navy); border-bottom: 1px solid var(--line-dark);
  }
  .nav-menu.is-open { display: flex; }
  .nav-menu a { padding: 12px 0; border-bottom: 1px solid var(--line-dark); }
  .hero > .container:not(.hero-process), .landing-hero-grid { min-height: auto; padding: 56px 0 34px; }
  .section { padding: 62px 0; }
  .section-head, .cta .container, .whatsapp-cta .container { display: block; }
  .grid-2, .grid-3, .grid-4, .hero-process, .supply-grid, .stat-band, .footer-main { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .stat:last-child { border-bottom: 0; }
}
@media (max-width: 560px) {
  .container { width: min(100% - 28px, 1180px); }
  h1 { font-size: 38px; }
  .brand { min-width: 0; }
  .brand-name { font-size: 18px; }
  .brand-line { font-size: 10px; }
  .hero-actions, .cta-row { flex-direction: column; }
  main .btn, .site-footer .btn { width: 100%; }
  .form-grid { grid-template-columns: 1fr; }
  .floating-whatsapp { right: 14px; bottom: 14px; }
}