.container {
  width: 95%;
  margin: auto;
}

.intro-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 80px 20px;
}

.intro-content h1 {
  margin: 0;
  font-family: var(--evidence-font);
  font-size: 32px;
  letter-spacing: 0.3px;
  line-height: 1.5;
}

.intro-content h3 {
  margin: 0 0 15px 0;
  color: var(--text-secondary);
  font-size: 22px;
  font-weight: 200;
}

.intro-buttons {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 20px;
}

.intro-buttons button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  min-width: max-content;
  line-height: 1;
  padding: 11px 19px;
  border: var(--border-button-outline);
  border-radius: 20px;
  color: var(--text-accent-blue);
  background: transparent;
  font-size: 17px;
  font-weight: 500;
  text-decoration: none;
  box-shadow: var(--shadow-blue-off);
  transition: 0.3s;
}
.intro-buttons button:hover {
  transform: translateY(-3px);
  color: var(--text-primary);
  background: var(--bg-button-outline-on);
  box-shadow: var(--shadow-blue-on);
}

.content {
  display: flex;
  gap: 80px;
  margin: 40px 0 130px 0;
}

.content-cards {
  flex: 1.5;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px;
}

.content-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  border: var(--border-standard);
  border-radius: 14px;
  background: var(--bg-content-card);
  box-shadow: var(--shadow-dark);
  cursor: pointer;
  transition: 0.3s ease;
}

.content-card:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-blue-on);
}

.content-card i {
  color: var(--text-accent-blue);
  font-size: 34px;
}

.content-card h2 {
  margin: 10px 0 20px 0;
  font-size: 24px;
}

.content-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
}

.content-features {
  flex: 0.4;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 15px;
}

.feature {
  display:flex;
  justify-content:space-between;
  padding-bottom: 4px;
  border-bottom: var(--border-standard);
  font-size: 15px;
}

.feature span {
  color:var(--text-accent-blue);
}

/* laptop 1600–1919px */
@media (min-width: 1600px) and (max-width: 1919px) {
  .intro-content {
    padding: 70px 20px;
  }

  .intro-content h1 {
    font-size: 30px;
  }

  .intro-content h3 {
    font-size: 20px;
  }

  .intro-buttons button {
    font-size: 16px;
  }

  .content {
    gap: 60px;
    margin: 40px 0 120px 0;
  }

  .content-cards {
    gap: 40px;
  }

  .content-card i {
    font-size: 32px;
  }

  .content-card h2 {
    font-size: 22px;
  }

  .content-card p {
    font-size: 14px;
  }

  .feature {
    font-size: 14px;
  }
}

/* laptop 1366–1599px */
@media (min-width: 1366px) and (max-width: 1599px) {
  .intro-content {
    padding: 60px 20px;
  }

  .intro-content h1 {
    font-size: 28px;
  }

  .intro-content h3 {
    font-size: 18px;
  }

  .intro-buttons {
    gap: 35px;
    margin-top: 15px;
  }

  .intro-buttons button {
    padding: 10px 17px;
    font-size: 15px;
  }

  .content {
    gap: 30px;
    margin: 30px 0 100px 0;
  }

  .content-cards {
    gap: 30px;
  }

  .content-card {
    padding: 30px 10px;
  }

  .content-card i {
    font-size: 30px;
  }

  .content-card h2 {
    margin: 10px 0 15px 0;
    font-size: 20px;
  }

  .content-card p {
    font-size: 14px;
  }

  .content-features {
    flex: 0.45;
    gap: 12px;
  }

  .feature {
    font-size: 13px;
  }
}

/* laptop 1280–1365px */
@media (min-width: 1280px) and (max-width: 1365px) {
  .intro-content {
    padding: 65px 20px;
  }

  .intro-content h1 {
    font-size: 28px;
  }

  .intro-content h3 {
    font-size: 18px;
  }

  .intro-buttons {
    gap: 35px;
    margin-top: 15px;
  }

  .intro-buttons button {
    padding: 10px 17px;
    font-size: 15px;
  }

  .content {
    gap: 30px;
    margin: 30px 0 110px 0;
  }

  .content-cards {
    gap: 30px;
  }

  .content-card {
    padding: 30px 10px;
  }

  .content-card i {
    font-size: 30px;
  }

  .content-card h2 {
    margin: 10px 0 15px 0;
    font-size: 20px;
  }

  .content-card p {
    font-size: 13.5px;
  }

  .content-features {
    flex: 0.45;
    gap: 12px;
  }

  .feature {
    font-size: 13px;
  }
}

/* tablet */
@media (min-width: 768px) and (max-width: 1279px) and (orientation: portrait) {
  .intro-content {
    padding: 40px 20px;
  }

  .intro-content h1 {
    font-size: 26px;
  }

  .intro-content h3 {
    font-size: 18px;
  }

  .intro-buttons {
    gap: 30px;
    margin-top: 15px;
  }

  .intro-buttons button {
    padding: 10px 17px;
    font-size: 15px;
  }

  .content {
    flex-direction: column;
    gap: 50px;
    margin: 30px 0 60px 0;
  }

  .content-cards {
    flex: 1;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
    padding: 0 60px;
  }

  .content-card i {
    font-size: 32px;
  }

  .content-card h2 {
    margin: 10px 0 15px 0;
    font-size: 22px;
  }

  .content-card p {
    text-align: center;
    font-size: 14px;
  }

  .content-features {
    flex: 1;
    gap: 15px;
    padding: 0 100px;
  }

  .feature {
    font-size: 14px;
  }
}
@media (min-width: 768px) and (max-width: 1279px) and (orientation: landscape) {
.intro-content {
  padding: 40px 20px;
}

.intro-content h1 {
  font-size: 28px;
}

.intro-content h3 {
  font-size: 18px;
}

.intro-buttons {
  gap: 30px;
  margin-top: 15px;
}

.intro-buttons button {
  padding: 10px 17px;
  font-size: 15px;
}

.content {
  flex-direction: column;
  gap: 50px;
  margin: 30px 0 70px 0;
}

.content-cards {
  flex: 1;
  gap: 30px;
}

.content-card {
  padding: 30px 10px;
}

.content-card i {
  font-size: 28px;
}

.content-card h2 {
  margin: 10px 0 15px 0;
  font-size: 22px;
}

.content-card p {
  font-size: 14px;
}

.content-features {
  flex: 0.5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 15px;
  padding: 0 80px;
}

.feature {
  display:flex;
  justify-content:space-between;
  padding-bottom: 4px;
  border-bottom: var(--border-standard);
  font-size: 15px;
}

.feature span {
  color:var(--text-accent-blue);
}
}

/* smartphone */
@media (max-width: 767px) and (orientation: portrait) {
  .intro-content {
    padding: 20px 5px;
  }

  .intro-content h1 {
    text-align: center;
    font-size: 20px;
  }

  .intro-content h3 {
    text-align: center;
    font-size: 15px;
  }

  .intro-buttons {
    gap: 20px;
    margin-top: 5px;
  }

  .intro-buttons button {
    padding: 8px 14px;
    font-size: 14px;
  }

  .content {
    flex-direction: column;
    gap: 40px;
    margin: 30px 0 40px 0;
  }

  .content-cards {
    flex: 1;
    grid-template-columns: repeat(1, 1fr);
    gap: 25px;
    padding: 0 10px;
  }

  .content-card i {
    font-size: 26px;
  }

  .content-card h2 {
    margin: 10px 0 15px 0;
    font-size: 20px;
  }

  .content-card p {
    text-align: center;
    font-size: 14px;
  }

  .content-features {
    flex: 1;
    gap: 15px;
    padding: 0 10px;
  }

  .feature {
    font-size: 13px;
  }
}
@media (max-width: 767px) and (orientation: landscape) {
  .intro-content {
    padding: 30px 10px;
  }

  .intro-content h1 {
    text-align: center;
    font-size: 22px;
  }

  .intro-content h3 {
    text-align: center;
    font-size: 16px;
  }

  .intro-buttons {
    gap: 30px;
    margin-top: 15px;
  }

  .intro-buttons button {
    padding: 9px 15px;
    font-size: 14px;
  }

  .content {
    flex-direction: column;
    gap: 40px;
    margin: 20px 0 40px 0;
  }

  .content-cards {
    flex: 1;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
    padding: 0 15px;
  }

  .content-card i {
    font-size: 30px;
  }

  .content-card h2 {
    margin: 10px 0 15px 0;
    font-size: 20px;
  }

  .content-card p {
    text-align: center;
    font-size: 14px;
  }

  .content-features {
    flex: 1;
    gap: 15px;
    padding: 0 60px;
  }

  .feature {
    font-size: 14px;
  }
}
@media (min-width: 768px) and (max-width: 915px) and (max-height: 500px) and (orientation: landscape) {
  .intro-content {
    padding: 35px 10px;
  }

  .intro-content h1 {
    text-align: center;
    font-size: 24px;
  }

  .intro-content h3 {
    text-align: center;
    font-size: 18px;
  }

  .intro-buttons {
    gap: 40px;
    margin-top: 15px;
  }

  .intro-buttons button {
    padding: 10px 17px;
    font-size: 15px;
  }

  .content {
    flex-direction: column;
    gap: 40px;
    margin: 20px 0 40px 0;
  }

  .content-cards {
    flex: 1;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
    padding: 0 60px;
  }

  .content-card i {
    font-size: 32px;
  }

  .content-card h2 {
    margin: 10px 0 15px 0;
    font-size: 22px;
  }

  .content-card p {
    text-align: center;
    font-size: 15px;
  }

  .content-features {
    flex: 1;
    gap: 15px;
    padding: 0 100px;
  }

  .feature {
    font-size: 14px;
  }
}