:root {
  --ink: #111111;
  --muted: #6b6a65;
  --line: #ddd9cf;
  --paper: #f7f5ef;
  --white: #ffffff;
  --steel: #8e9599;
  --copper: #b77a45;
  --charcoal: #171717;
  --gold: #c8a564;
  --shadow: 0 24px 70px rgba(16, 16, 16, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 72px);
  color: var(--white);
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(12px);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 50%;
  background: #121212;
}

.brand-mark img,
.footer-brand img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-text {
  font-size: 13px;
}

.nav-links {
  gap: clamp(16px, 3vw, 34px);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.nav-links a {
  position: relative;
  padding: 8px 0;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  content: "";
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  background: url("assets/hero-forging.png") center / cover no-repeat;
}

.hero-overlay {
  background: rgba(0, 0, 0, 0.4);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(980px, calc(100% - 40px));
  margin-left: clamp(20px, 14vw, 180px);
  padding-top: 112px;
}

.section-index,
.eyebrow {
  margin: 0 0 24px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 950px;
  margin: 0;
  font-size: clamp(48px, 10vw, 132px);
  line-height: 0.88;
  letter-spacing: 0;
}

.hero-kicker {
  margin: 46px 0 0;
  font-size: clamp(22px, 3vw, 38px);
  font-weight: 700;
}

.hero-copy {
  max-width: 610px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  padding: 0 24px;
  font-size: 13px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button-primary {
  border-color: var(--gold);
  background: var(--gold);
  color: #17130c;
}

.button-primary:hover {
  background: var(--white);
  border-color: var(--white);
}

.button-ghost:hover {
  background: rgba(255, 255, 255, 0.14);
}

.section-pad {
  padding: clamp(76px, 10vw, 140px) clamp(20px, 7vw, 96px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(320px, 1fr);
  gap: clamp(58px, 10vw, 140px);
  align-items: center;
  background: var(--white);
}

.intro .section-heading {
  max-width: 560px;
}

.intro .section-heading h2 {
  font-size: clamp(40px, 5.2vw, 76px);
  line-height: 1.04;
}

.section-heading h2,
.image-band h2,
.split-panel h2,
.quality h2,
.contact h2 {
  margin: 0;
  font-size: clamp(32px, 5vw, 68px);
  line-height: 0.98;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.intro-copy,
.section-heading p,
.contact-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
}

.intro-copy {
  max-width: 620px;
  font-size: 18px;
  padding-top: clamp(10px, 2vw, 28px);
}

.image-band {
  min-height: 52vh;
  display: flex;
  align-items: center;
  padding: clamp(48px, 8vw, 90px);
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.74), rgba(0, 0, 0, 0.18)),
    url("assets/metal-hero.png") center 70% / cover no-repeat fixed;
}

.image-band div {
  max-width: 680px;
}

.centered {
  max-width: 740px;
  margin: 0 auto 66px;
  text-align: center;
}

.centered h2 {
  margin-bottom: 30px;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card {
  min-height: 268px;
  border: 1px solid var(--line);
  padding: 30px;
  background: var(--paper);
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease, box-shadow 200ms ease;
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--gold);
  background: var(--white);
  box-shadow: var(--shadow);
}

.card-icon {
  display: inline-flex;
  width: 54px;
  height: 54px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.card h3 {
  margin: 42px 0 12px;
  font-size: 22px;
}

.card p,
.capability-list p,
.quality-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.split {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(320px, 1.14fr);
  gap: clamp(26px, 5vw, 70px);
  background: var(--paper);
}

.split-panel {
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(28px, 5vw, 58px);
}

.dark-panel {
  color: var(--white);
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.18), rgba(0, 0, 0, 0.82)),
    url("assets/processing-panel.png") center / cover no-repeat;
}

.dark-panel h2 {
  font-size: clamp(30px, 4vw, 52px);
}

.capability-list {
  display: grid;
  align-content: center;
  gap: 0;
  background: var(--white);
}

.capability-list article {
  display: grid;
  gap: 18px;
  padding: 42px;
  transition: background 180ms ease, transform 180ms ease;
}

.capability-list article:hover {
  background: #faf8f1;
  transform: translateX(6px);
}

.capability-list h3 {
  margin: 0 0 10px;
  font-size: 26px;
}

.capability-list p {
  max-width: 520px;
}

.quality {
  padding: clamp(78px, 10vw, 140px) clamp(20px, 7vw, 96px);
  color: var(--white);
  background: #060606;
}

.quality-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 52px;
  background: rgba(255, 255, 255, 0.16);
}

.quality-grid div {
  padding: 30px;
  background: #0d0d0d;
  transition: background 180ms ease, transform 180ms ease;
}

.quality-grid div:hover {
  background: #171717;
  transform: translateY(-5px);
}

.quality-grid strong {
  display: block;
  margin-bottom: 12px;
  color: var(--white);
  font-size: 20px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(320px, 0.75fr);
  gap: clamp(72px, 12vw, 160px);
  align-items: center;
}

.contact-copy h2 {
  margin-bottom: 32px;
}

.contact-card {
  display: flex;
  min-height: 210px;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--ink);
  padding: 32px;
  background: var(--white);
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.contact-card:hover {
  transform: translateY(-7px);
  background: var(--ink);
  color: var(--white);
  box-shadow: var(--shadow);
}

.contact-card span {
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.contact-card strong {
  overflow-wrap: anywhere;
  font-size: clamp(21px, 3vw, 34px);
  line-height: 1.1;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.68);
  background: #080808;
  font-size: 13px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  font-weight: 800;
}

.footer-brand img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .intro,
  .split,
  .contact {
    grid-template-columns: 1fr;
  }

  .intro-copy {
    padding-top: 0;
  }

  .material-grid,
  .quality-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split-panel {
    min-height: 430px;
  }
}

@media (max-width: 640px) {
  .brand-text {
    max-width: 170px;
  }

  .hero {
    min-height: 100vh;
  }

  .hero-content {
    margin-left: 20px;
  }

  .material-grid,
  .quality-grid {
    grid-template-columns: 1fr;
  }

  .capability-list article {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}