:root {
  --accent: #3b47ff;
  --bg: #f7f9fa;
  --dark: #18191f;
  --card: #fff;
  --radius: 20px;
  --text: #222;
}
body {
  margin: 0;
  font-family: "Open Sans", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
header {
  padding: 32px 0 16px 0;
  background: linear-gradient(90deg, var(--accent) 0%, #4e54c8de 100%);
  color: #fff;
  text-align: center;
}
header h1 {
  margin: 0 0 10px 0;
  font-size: 2.3rem;
  letter-spacing: 0.01em;
}
header p {
  font-size: 1.19rem;
  margin-bottom: 32px;
}
.cta-btn {
  background: #fff;
  color: var(--accent);
  padding: 15px 34px;
  border: none;
  border-radius: 30px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 2px 12px 0 #2c267a26;
  transition: 0.2s;
  margin: 12px 0 0 0;
  display: inline-block;
}
.cta-btn:hover {
  background: #f1f3fe;
  box-shadow: 0 4px 24px 0 #2230d54e;
}
.section {
  max-width: 1050px;
  margin: 0 auto;
  padding: 60px 25px;
}
h2 {
  font-size: 2rem;
  margin-bottom: 22px;
  color: var(--accent);
}
h3 {
  margin-bottom: 12px;
  color: var(--accent);
}
.columns {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
}
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 2px 13px #18191f09;
  padding: 30px 22px;
  flex: 1 1 280px;
  min-width: 220px;
  margin-bottom: 0;
}
.faq-q {
  font-weight: 600;
  margin: 0 0 8px 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-a {
  display: none;
  padding-left: 2px;
  margin-bottom: 20px;
}
.faq.open .faq-a {
  display: block;
}
.faq svg {
  margin-left: 10px;
  transition: transform 0.2s;
}
.faq.open .faq-q svg {
  transform: rotate(45deg);
}
.models-logos img {
  width: 100%;
  max-width: 600px; /* or adjust to your layout */
  height: auto;
  margin: 0 auto 15px auto;
  display: block;
  filter: grayscale(0.2);
  object-fit: contain;
}
.about {
  background: linear-gradient(105deg, #eef2fa 20%, #d7dadf 90%);
  border-radius: var(--radius);
  margin: 0 0 32px 0;
  padding: 35px 24px 24px 24px;
  box-shadow: 0 1px 5px #1e21350b;
}
.industries-list {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.industries-list span {
  background: #fff;
  border-radius: 999px;
  padding: 8px 18px;
  color: var(--accent);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 6px;
  box-shadow: 0 3px 10px #3b47ff11;
}
.tabs {
  display: flex;
  gap: 0;
  border-radius: 16px 16px 0 0;
  overflow: auto;
}
.tab {
  flex: 1 1 0;
  text-align: center;
  background: #e6e9fc;
  color: var(--accent);
  padding: 13px 0;
  cursor: pointer;
}
.tab.active {
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}
.tab-content {
  background: #fff;
  box-shadow: 0 4px 25px #2c236614;
  border-radius: 0 0 20px 20px;
  padding: 28px 18px;
}
.usecase-slider {
  display: flex;
  overflow-x: auto;
  gap: 20px;
  margin-top: 24px;
}
.usecase-card {
  min-width: 280px;
  background: #fff;
  box-shadow: 0 2px 15px #18191f0a;
  padding: 23px 24px 20px 24px;
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  flex: 1 1 0;
  transition: transform 0.16s;
}
.usecase-card img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 13px;
}
.usecase-card h4 {
  margin: 10px 0 8px 0;
}
.usecase-card a {
  text-decoration: underline;
  color: var(--accent);
}
footer {
  background: #18191f;
  color: #e6e6ec;
  text-align: center;
  padding: 50px 12px 22px;
}
footer small {
  color: #8f95b8;
}
@media (max-width: 900px) {
  .columns {
    flex-direction: column;
  }
  .section {
    padding: 50px 8vw;
  }
}
@media (max-width: 600px) {
  header {
    padding: 22px 0 10px;
  }
  header h1 {
    font-size: 1.4rem;
  }
  .tab-content {
    padding: 18px 4px;
  }
  .about {
    padding: 19px 10px;
  }
  .section {
    padding: 30px 2vw;
  }
  .card {
    padding: 18px 8px;
  }
  .industries-list {
    gap: 9px;
  }
}