:root {
  color-scheme: dark;
  --bg: #090909;
  --bg-soft: #101112;
  --panel: #171717;
  --panel-strong: #1f1f1d;
  --gold: #d4af37;
  --gold-soft: #f0d276;
  --line: rgba(255, 255, 255, 0.12);
  --text: #f4f1e8;
  --muted: #b9b5aa;
  --dim: #7f7b70;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px clamp(18px, 4vw, 56px);
  background: rgba(9, 9, 9, 0.74);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand-mark,
.site-footer span:first-child {
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.brand-mark::after,
.site-footer span:first-child::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-left: 10px;
  background: var(--gold);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 34px);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.nav-links a {
  transition: color 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--gold-soft);
}

.section-inner {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 86vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  padding: 132px 0 76px;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -3;
  background-image: url("assets/infusion-network-hero.png");
  background-position: center right;
  background-size: cover;
  transform: scale(1.02);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(9, 9, 9, 0.98) 0%, rgba(9, 9, 9, 0.86) 37%, rgba(9, 9, 9, 0.38) 72%, rgba(9, 9, 9, 0.55) 100%),
    linear-gradient(180deg, rgba(9, 9, 9, 0.2) 0%, rgba(9, 9, 9, 0.88) 100%);
}

.hero-inner {
  max-width: var(--max);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold-soft);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 26px;
  font-size: clamp(46px, 7vw, 88px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.55;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
  color: var(--text);
}

.hero-proof span {
  padding: 9px 12px;
  border: 1px solid rgba(212, 175, 55, 0.34);
  background: rgba(9, 9, 9, 0.48);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 20px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--gold);
  color: #14120b;
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.section-band {
  padding: clamp(76px, 10vw, 128px) 0;
  background: var(--bg);
}

.intro {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #0d0d0c;
}

.intro-grid,
.approach-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(34px, 7vw, 86px);
  align-items: start;
}

.intro-grid p:last-child,
.contact-grid p {
  color: var(--muted);
  font-size: 19px;
}

.section-heading {
  margin-bottom: 38px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 330px;
  padding: 28px;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  border: 1px solid var(--line);
}

.service-card p,
.step p {
  color: var(--muted);
}

.service-icon {
  display: block;
  width: 34px;
  height: 34px;
  margin-bottom: 28px;
  border: 1px solid rgba(212, 175, 55, 0.55);
  background:
    linear-gradient(90deg, transparent 13px, rgba(212, 175, 55, 0.9) 13px, rgba(212, 175, 55, 0.9) 19px, transparent 19px),
    linear-gradient(transparent 13px, rgba(212, 175, 55, 0.9) 13px, rgba(212, 175, 55, 0.9) 19px, transparent 19px);
}

.approach {
  background:
    linear-gradient(180deg, rgba(212, 175, 55, 0.05), transparent 28%),
    #0d0d0c;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.steps {
  display: grid;
  gap: 18px;
}

.step {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 12px 22px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.step:last-child {
  border-bottom: 1px solid var(--line);
}

.step span {
  color: var(--gold-soft);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.step h3,
.step p {
  grid-column: 2;
}

.contact {
  padding: clamp(82px, 11vw, 140px) 0;
  background: #090909;
}

.contact-panel {
  display: grid;
  gap: 10px;
  padding: clamp(28px, 4vw, 42px);
  background: var(--text);
  color: #121212;
  font-style: normal;
}

.contact-panel strong {
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.2;
}

.contact-panel a {
  width: fit-content;
  color: #111;
  font-weight: 800;
  border-bottom: 2px solid rgba(212, 175, 55, 0.8);
}

.site-footer {
  padding: 30px 0;
  border-top: 1px solid var(--line);
  color: var(--dim);
  background: #070707;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-inner span:last-child {
  color: var(--dim);
  font-size: 14px;
}

@media (max-width: 980px) {
  .hero {
    min-height: 82vh;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 680px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    padding-top: 18px;
  }

  .nav-links {
    gap: 12px;
    font-size: 11px;
  }

  .brand-mark {
    font-size: 15px;
  }

  .hero {
    min-height: 760px;
    padding-top: 124px;
  }

  .hero-media {
    background-position: 63% center;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(9, 9, 9, 0.96) 0%, rgba(9, 9, 9, 0.83) 58%, rgba(9, 9, 9, 0.58) 100%),
      linear-gradient(180deg, rgba(9, 9, 9, 0.08) 0%, rgba(9, 9, 9, 0.9) 100%);
  }

  .section-inner {
    width: min(100% - 32px, var(--max));
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-proof {
    display: grid;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: 0;
  }

  .step {
    grid-template-columns: 1fr;
  }

  .step h3,
  .step p {
    grid-column: auto;
  }

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