.cot-systems {
  --red: #d32f2f;
  --navy: #06172d;
  background: #f4f6f8;
  color: #142637;
  font-family: Arial, sans-serif;
  margin-left: calc(50% - 50vw);
  width: 100vw;
}

.cot-systems * {
  box-sizing: border-box;
}

.cot-systems__hero {
  background: linear-gradient(120deg, #020a15, #0b2947);
  color: #fff;
  padding: 150px max(24px, calc((100vw - 1160px) / 2));
  position: relative;
}

.cot-systems__hero div {
  max-width: 760px;
}

.cot-systems__hero p,
.cot-systems__intro > p,
.cot-systems__contact p {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.cot-systems__hero h1,
.cot-systems__hero p,
.cot-systems__hero span {
  color: #fff;
}

.cot-systems__intro > p,
.cot-systems__contact p {
  color: var(--red);
}

.cot-systems h1 {
  font-size: clamp(3rem, 6vw, 5.8rem);
  line-height: 0.98;
  margin: 18px 0 28px;
}

.cot-systems__hero span {
  display: block;
  font-size: 1.18rem;
  line-height: 1.7;
  max-width: 650px;
}

.cot-systems a {
  text-decoration: none;
}

.cot-systems__hero a,
.cot-systems__contact a {
  background: var(--red);
  border-radius: 999px;
  color: #fff;
  display: inline-block;
  font-weight: 800;
  margin-top: 32px;
  padding: 15px 22px;
}

.cot-systems__intro {
  margin: auto;
  max-width: 1160px;
  padding: 100px 24px 40px;
}

.cot-systems__intro h2,
.cot-systems__contact h2 {
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin: 12px 0;
}

.cot-systems__intro span {
  color: #617181;
  display: block;
  line-height: 1.7;
  max-width: 650px;
}

.cot-systems__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, 1fr);
  margin: auto;
  max-width: 1160px;
  padding: 35px 24px 100px;
}

.cot-systems__card {
  background: #fff;
  min-height: 420px;
  opacity: 0;
  overflow: hidden;
  transform: translateY(32px);
  transition: opacity 0.7s ease var(--delay), transform 0.7s ease var(--delay);
}

.cot-systems__card.is-visible,
.cot-systems__intro.is-visible,
.cot-systems__contact.is-visible {
  opacity: 1;
  transform: none;
}

.cot-systems__card img {
  display: block;
  height: 180px;
  object-fit: contain;
  padding: 18px;
  width: 100%;
}

.cot-systems__card div {
  border-top: 3px solid var(--red);
  padding: 23px;
}

.cot-systems__card p {
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
}

.cot-systems__card h2 {
  color: var(--navy);
  font-size: 1.35rem;
  margin: 0 0 12px;
}

.cot-systems__card span {
  color: #617181;
  display: block;
  font-size: 0.93rem;
  line-height: 1.6;
  min-height: 68px;
}

.cot-systems__card a {
  color: var(--red);
  display: block;
  font-size: 13px;
  font-weight: 800;
  margin-top: 18px;
}

.cot-systems__contact {
  background: #fff;
  margin: 0;
  opacity: 0;
  padding: 100px max(24px, calc((100vw - 1160px) / 2));
  transform: translateY(32px);
}

.cot-systems__contact h2 {
  max-width: 780px;
}

@media (max-width: 800px) {
  .cot-systems__grid {
    grid-template-columns: 1fr 1fr;
  }

  .cot-systems__hero {
    padding-top: 110px;
  }
}

@media (max-width: 560px) {
  .cot-systems__grid {
    grid-template-columns: 1fr;
  }

  .cot-systems__hero {
    padding: 90px 20px;
  }

  .cot-systems__intro {
    padding-top: 65px;
  }

  .cot-systems__contact {
    padding: 65px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cot-systems__card,
  .cot-systems__intro,
  .cot-systems__contact {
    opacity: 1;
    transform: none;
    transition: none;
  }
}