/* Giao diện gốc (khung ChatGPT) — phần 5/8. Nạp đúng thứ tự trong HTML (file sau ghi đè file trước). */
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 42px;
}
.footer-brand {
  margin-bottom: 22px;
}
.footer-brand img {
  background: white;
  border-radius: 6px;
  padding: 7px;
  width: 165px;
  height: 68px;
}
footer h3 {
  font-size: 13px;
  letter-spacing: 0;
  margin: 7px 0 20px;
}
footer a:not(.brand) {
  display: block;
  margin-bottom: 10px;
  color: #c5cae1;
}
footer a:hover {
  color: #ff946e;
}
footer p {
  color: #c5cae1;
}
footer .muted {
  color: #949cbd;
  font-size: 11px;
}
.footer-bottom {
  border-top: 1px solid #ffffff15;
  padding-top: 20px;
  padding-bottom: 23px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  color: #949cbd;
  font-size: 10px;
}
.skip {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 100;
  background: white;
  padding: 12px;
}
.skip:focus {
  top: 8px;
}
[hidden] {
  display: none !important;
}
main:focus {
  outline: none;
}
.empty {
  color: var(--muted);
  padding: 25px;
  text-align: center;
}
.loading {
  color: var(--muted);
  font-size: 13px;
}
.about-statement {
  font-size: 30px;
  line-height: 1.5;
  color: var(--navy);
  letter-spacing: -1px;
}
.inline-error {
  color: #ab361e;
  font-size: 12px;
}
.success {
  color: #176742;
}
.spacer-top {
  margin-top: 28px;
}
@media (min-width: 1450px) {
  .hero {
    padding-top: 80px;
    padding-bottom: 125px;
  }
  .visual {
    margin-top: -65px;
    margin-bottom: -55px;
  }
}
@media (max-width: 1050px) {
  .nav {
    gap: 15px;
  }
  nav {
    gap: 17px;
  }
  .brand img {
    width: 135px;
  }
  .nav-cta {
    display: none;
  }
  .hero h1 {
    font-size: 46px;
  }
  .visual {
    margin-right: -20px;
  }
  .cards {
    gap: 14px;
  }
  .card {
    padding: 24px;
  }
  .container {
    width: calc(100% - 44px);
  }
}