:root {
  --ink: #222;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #be1e2d;
  --dark: #171717;
  --paper: #fff;
  --wash: #f4f4f4;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 16px/1.65 "Open Sans", Arial, sans-serif;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--brand); }
.wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.site-header { background: #fff; }
.brand-row {
  display: flex;
  align-items: center;
  min-height: 176px;
  padding-block: 10px;
}
.brand-row img { width: 300px; max-width: 72vw; }
.nav { background: var(--dark); border-bottom: 4px solid var(--brand); }
.nav .wrap { display: flex; flex-wrap: wrap; }
.nav a {
  display: block;
  padding: 16px 19px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .035em;
  text-decoration: none;
  text-transform: uppercase;
}
.nav a:hover, .nav a:focus, .nav a[aria-current="page"] { background: var(--brand); }

.hero {
  position: relative;
  height: clamp(230px, 30vw, 350px);
  overflow: hidden;
  background: #111;
}
.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  animation: hero-cycle 18s infinite;
}
.hero img:nth-child(2) { animation-delay: 6s; }
.hero img:nth-child(3) { animation-delay: 12s; }
@keyframes hero-cycle {
  0%, 30% { opacity: 1; }
  36%, 94% { opacity: 0; }
  100% { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .hero img { animation: none; opacity: 0; }
  .hero img:first-child { opacity: 1; }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding-block: 46px 56px;
}
.feature { border-top: 4px solid var(--dark); }
.feature img { width: 100%; aspect-ratio: 281 / 66; object-fit: cover; }
.feature h2 { margin: 20px 0 8px; font-size: 22px; font-weight: 600; }
.feature p { color: #555; }
.button {
  display: inline-block;
  padding: 10px 17px;
  color: #fff;
  background: var(--brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  text-transform: uppercase;
}
.button:hover, .button:focus { background: #8f1521; }

.page-title { background: var(--wash); border-bottom: 1px solid var(--line); }
.page-title h1 { margin: 0; padding-block: 29px; font-size: clamp(28px, 4vw, 40px); font-weight: 400; }
.content { padding-block: 46px 70px; }
.content > :first-child { margin-top: 0; }
.content h2 { margin-top: 38px; font-size: 25px; }
.content h3 { margin: 0; font-size: 18px; }
.section { margin: 0 0 24px; }
.section-title {
  margin-bottom: 12px;
  padding: 6px 10px;
  color: #fff;
  background: var(--dark);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .02em;
}
.content ul { padding-left: 22px; }
.photo-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 30px; }
.photo-pair figure { margin: 0; background: var(--wash); }
.photo-pair figcaption { padding: 7px 10px; color: #555; font-size: 14px; font-style: italic; }
.profile-grid, .client-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.profile-card, .client-card { padding: 20px; border: 1px solid var(--line); background: #fafafa; }
.profile-card p, .client-card p { margin: 6px 0 0; }
.code-grid { display: grid; grid-template-columns: 100px 1fr; gap: 8px 20px; }
.code-grid > div { padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.contact-card { max-width: 650px; padding: 28px; border-left: 5px solid var(--brand); background: var(--wash); }
.notice { padding: 15px 18px; border: 1px solid #d4d4d4; background: #fafafa; color: #555; }

.site-footer { padding-block: 28px; color: #c7c7c7; background: var(--dark); font-size: 14px; }
.site-footer p { margin: 0; }

@media (max-width: 760px) {
  .brand-row { min-height: 125px; }
  .nav .wrap { width: 100%; }
  .nav a { flex: 1 1 50%; padding: 13px 12px; text-align: center; }
  .feature-grid, .profile-grid, .client-grid, .photo-pair { grid-template-columns: 1fr; }
  .feature-grid { padding-block: 30px 42px; }
  .content { padding-block: 34px 50px; }
  .code-grid { grid-template-columns: 82px 1fr; }
}