.hero {
  background: #0d1625;
  color: #ffffff;
}

.site-header .brand {
  width: 188px;
  align-items: center;
  gap: 10px;
}

.site-header .brand img {
  width: 34px;
  flex: 0 0 34px;
}

.brand-wordmark {
  color: #17232d;
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  letter-spacing: 0;
}

.hero-promise {
  max-width: 680px;
}

.hero .eyebrow {
  color: #74d9dc;
}

.hero-copy,
.hero-proof {
  color: #bdc8d1;
}

.hero .text-link {
  color: #ffffff;
}

.product-frame img {
  object-fit: contain;
  background: #f3f6f8;
}

.wechat-contact {
  width: 240px;
  margin: 36px auto 0;
  padding: 12px 12px 10px;
  background: #ffffff;
  color: #172135;
  border-radius: 6px;
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.24);
}

.wechat-contact img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

.wechat-contact figcaption {
  padding-top: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

@media (max-width: 840px) {
  .hero {
    background: #0d1625;
  }

  .site-header .brand {
    width: 154px;
    gap: 8px;
  }

  .site-header .brand img {
    width: 30px;
    flex-basis: 30px;
  }

  .brand-wordmark {
    font-size: 16px;
  }

  html,
  body {
    max-width: 100%;
    overflow-x: hidden;
  }

  .site-header {
    gap: 12px;
  }

  .site-header .button-small {
    min-height: 36px;
    margin-left: auto;
    padding: 0 14px;
    font-size: 13px;
    white-space: nowrap;
  }

  .hero {
    height: calc(100svh - 18px);
    min-height: 540px;
    max-height: 720px;
  }

  .hero-content {
    padding-top: clamp(48px, 9svh, 76px);
  }

  .hero-proof {
    font-size: 12px;
  }

  .scene-view[data-layout='portrait'] .product-frame {
    width: min(100%, 420px);
    margin-inline: auto;
  }

  .scene-view[data-layout='portrait'] .product-frame img {
    aspect-ratio: 4 / 5;
    max-height: 560px;
  }

  .phone-scene {
    width: min(100%, 340px);
  }

  .wechat-contact {
    width: min(230px, 72vw);
  }

  .loop {
    row-gap: 8px;
  }

  .trust-layout li {
    grid-template-columns: 106px 1fr;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding-inline: 14px;
  }

  .site-header .brand {
    width: auto;
    min-width: 0;
  }

  .site-header .brand img {
    width: 27px;
    flex-basis: 27px;
  }

  .brand-wordmark {
    font-size: 15px;
  }

  .site-header .button-small {
    padding-inline: 11px;
    font-size: 12px;
  }

  .hero-content {
    width: calc(100% - 28px);
  }

  .hero h1 {
    font-size: 48px;
  }

  .hero-promise {
    margin-top: 22px;
    font-size: 28px;
  }

  .hero-copy {
    margin-block: 14px;
    font-size: 15px;
    line-height: 1.55;
  }

  .hero-actions {
    margin-top: 22px;
  }

  .hero-actions .button {
    min-height: 44px;
  }

  .hero-proof {
    bottom: 16px;
  }

  .section {
    padding: 64px 16px;
  }

  .section h2,
  .brain-copy h2,
  .action-layout h2,
  .private-layout h2 {
    font-size: 34px;
  }

  .lead,
  .section-heading-row > p,
  .roles-heading p,
  .scene-copy > p:last-child,
  .action-layout > div > p:not(.section-index),
  .private-copy > p:not(.section-index) {
    font-size: 16px;
  }

  .scene-tabs {
    margin-top: 38px;
    scrollbar-width: none;
  }

  .scene-tabs::-webkit-scrollbar {
    display: none;
  }

  .scene-tabs button {
    min-height: 44px;
  }

  .scene-view[data-layout='portrait'] .product-frame img {
    max-height: 500px;
  }

  .product-frame figcaption {
    display: grid;
    gap: 3px;
  }

  .product-frame figcaption span {
    margin-right: 0;
  }

  .loop {
    gap: 6px;
    font-size: 14px;
  }

  .trust-layout li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .demo-inner h2 {
    font-size: 36px;
  }
}

@media (max-width: 350px) {
  .site-header .brand {
    gap: 6px;
  }

  .brand-wordmark {
    font-size: 14px;
  }

  .site-header .button-small {
    padding-inline: 9px;
    font-size: 11px;
  }

  .hero h1 {
    font-size: 43px;
  }

  .hero-promise {
    font-size: 25px;
  }

  .hero-proof {
    gap: 6px 10px;
  }
}