:root {
  --background: #efefef;
  --text: #111111;
  --video-bg: #050505;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--background);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
}

body {
  min-height: 100vh;
}

.isa-section {
  width: 100%;
  background: var(--background);
  padding: 40px 0 0;
}

.content-wrap {
  width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 6rem);
  line-height: 1.06;
  letter-spacing: -0.06em;
  font-weight: 700;
  color: var(--text);
}

p {
  max-width: 1240px;
  margin: 32px 0 0;
  font-size: clamp(1.2rem, 1.7vw, 2.2rem);
  line-height: 1.6;
  letter-spacing: -0.04em;
  font-weight: 300;
  color: rgba(17, 17, 17, 0.92);
}

.video-frame {
  width: 90%;
  margin: 52px auto 0;
  background: var(--video-bg);
  overflow: hidden;
  border-radius: 0;
}

.video-frame video {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
}

.isa-comparison {
  padding: 56px 3.5% 48px;
  background: #fff;
  text-align: center;
}

.comparison-content {
  max-width: 1500px;
  margin: 0 auto;
}

.comparison-content h2 {
  margin: 0;
  font-size: clamp(2rem, 3.2vw, 3.5rem);
  line-height: 1.15;
  letter-spacing: -0.045em;
  font-weight: 700;
}

.comparison-content p {
  max-width: 1500px;
  margin: 28px auto 0;
  color: rgba(17, 17, 17, 0.78);
}

.comparison-videos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  width: 100%;
  margin: 0 auto;
}

.comparison-videos video {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
}

.eye-protection {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  padding: 20px 5.3%;
  background: #fff;
}

.eye-protection-copy {
  max-width: 600px;
}

.eye-protection-copy h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.eye-protection-copy p {
  margin-top: 32px;
  color: rgba(17, 17, 17, 0.78);
}

.eye-protection-image {
  display: block;
  width: 100%;
  height: auto;
}

.smart-features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  padding: 40px 3.2% 56px;
  background: #fff;
}

.smart-feature video {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
}

.smart-feature h2 {
  margin: 34px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 2.4vw, 2.5rem);
  line-height: 1.2;
}

.smart-feature p {
  max-width: none;
  margin-top: 24px;
  color: rgba(17, 17, 17, 0.78);
}

.entertainment {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  padding: 36px 2.5%;
  background: #fff;
}

.entertainment-copy {
  max-width: 620px;
}

.entertainment-copy h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.25;
  letter-spacing: -0.045em;
}

.entertainment-copy p {
  margin-top: 32px;
  color: rgba(17, 17, 17, 0.78);
}

.entertainment-image {
  display: block;
  width: 100%;
  height: auto;
}

.connectivity-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 10%;
  padding: 32px 3.3%;
  background: #fff;
}

.connectivity-feature-image {
  display: block;
  width: 100%;
  height: auto;
}

.connectivity-feature-copy {
  max-width: 560px;
}

.connectivity-feature-copy h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.connectivity-feature-copy p {
  margin-top: 24px;
  color: rgba(17, 17, 17, 0.78);
}

@media (max-width: 900px) {
  .content-wrap {
    width: min(100% - 28px, 1440px);
  }

  p {
    margin-top: 24px;
  }

  .video-frame {
    margin-top: 40px;
  }

  .isa-comparison {
    padding: 40px 14px;
  }

  .comparison-content p {
    margin-top: 20px;
  }

  .comparison-videos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 24px;
  }

  .eye-protection {
    gap: 24px;
    padding: 24px 14px;
  }

  .smart-features {
    gap: 16px;
    padding: 24px 14px 40px;
  }

  .smart-feature h2 {
    margin-top: 22px;
  }

  .smart-feature p {
    margin-top: 16px;
  }

  .entertainment {
    gap: 24px;
    padding: 24px 14px;
  }

  .connectivity-feature {
    gap: 24px;
    padding: 24px 14px;
  }
}

@media (max-width: 600px) {
  .comparison-videos {
    grid-template-columns: 1fr;
  }

  .eye-protection {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .eye-protection-copy p {
    margin-top: 20px;
  }

  .smart-features {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .entertainment {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .entertainment-copy p {
    margin-top: 20px;
  }

  .connectivity-feature,
  .connectivity-feature-reversed {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .connectivity-feature-reversed .connectivity-feature-copy {
    order: 1;
  }

  .connectivity-feature-reversed .connectivity-feature-image {
    order: 2;
  }

  .connectivity-feature-copy p {
    margin-top: 20px;
  }
}