.page-shell {
  background:
    radial-gradient(circle at 12% 6%, rgba(28, 210, 168, .22), transparent 22%),
    radial-gradient(circle at 88% 0%, rgba(75, 164, 255, .2), transparent 24%),
    linear-gradient(180deg, #eaf6ff 0%, #d7f7ed 18%, #fff 42%, #fff 100%);
}

.site-header {
  justify-content: flex-end;
  background: transparent;
}

.header-link:hover {
  color: #10bca7;
}

.hero {
  padding-top: 48px;
}

.hero-inner {
  grid-template-columns: minmax(0, 450px) minmax(460px, 700px);
  gap: 66px;
  max-width: 1216px;
}

.hero-title {
  color: #13252a;
  font-size: 58px;
  line-height: 1.12;
}

.hero-desc {
  color: #40565d;
  margin-bottom: 34px;
  font-size: 25px;
  line-height: 1.55;
}

.title-line,
.desc-line {
  display: block;
  white-space: nowrap;
}

.primary-button {
  width: 154px;
  height: 54px;
  border-radius: 10px;
  background: linear-gradient(118deg, #17d77b 0%, #16bdae 48%, #189ee8 100%);
  box-shadow: 0 14px 28px rgba(22, 189, 174, .24);
}

.primary-button:hover {
  box-shadow: 0 18px 34px rgba(24, 158, 232, .26);
}

.showcase-frame {
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(43, 196, 181, .22);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(240, 255, 251, .96), rgba(228, 244, 255, .92)),
    #e9fbf7;
  box-shadow: 0 28px 70px rgba(40, 126, 145, .18);
  overflow: hidden;
}

.showcase-frame img {
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 24px;
  object-fit: cover;
}

.content-section {
  max-width: none;
  margin: 0;
  padding: 94px 24px 108px;
  background:
    radial-gradient(circle at 13% 18%, rgba(26, 215, 188, .16), transparent 24%),
    radial-gradient(circle at 88% 4%, rgba(75, 164, 255, .14), transparent 26%),
    linear-gradient(180deg, rgba(248, 255, 253, 0) 0%, rgba(248, 255, 253, .7) 24%, #edf9f6 58%, #fff 100%);
}

.section-title,
.section-subtitle,
.content-card-list {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  color: #12272c;
  font-size: 38px;
}

.section-subtitle {
  color: #567078;
  margin-bottom: 56px;
}

.content-card-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.content-card-list li {
  min-height: 430px;
  border: 1px solid rgba(39, 190, 175, .18);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .96), rgba(241, 253, 250, .94));
  box-shadow: 0 20px 54px rgba(41, 127, 143, .12);
  padding: 26px 26px 24px;
}

.content-card-title {
  margin: 0 0 18px;
  color: #13252a;
  font-size: 22px;
  line-height: 1.35;
}

.content-card-body {
  margin: 0 0 28px;
  color: #526b73;
  font-size: 16px;
  line-height: 1.8;
}

.content-card-image {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-top: auto;
  border-radius: 10px;
  object-fit: cover;
  background: #f1fbf8;
}

.faq-section {
  max-width: none;
  margin: 0;
  padding: 16px 24px 112px;
  background:
    radial-gradient(circle at 16% 10%, rgba(26, 215, 188, .12), transparent 24%),
    radial-gradient(circle at 84% 0%, rgba(75, 164, 255, .12), transparent 28%),
    linear-gradient(180deg, #fff 0%, #f3fcfa 54%, #fff 100%);
}

.faq-list {
  display: grid;
  max-width: 980px;
  margin: 48px auto 0;
  gap: 16px;
}

.faq-item {
  border: 1px solid rgba(39, 190, 175, .18);
  border-radius: 12px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 18px 48px rgba(41, 127, 143, .1);
  overflow: hidden;
}

.faq-question {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #13252a;
  cursor: pointer;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  list-style: none;
  padding: 22px 26px;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-arrow {
  width: 11px;
  height: 11px;
  flex: 0 0 auto;
  border-right: 2px solid #16bdae;
  border-bottom: 2px solid #16bdae;
  transform: rotate(45deg);
  transition: transform .2s ease;
}

.faq-item[open] .faq-arrow {
  transform: rotate(225deg);
}

.faq-answer {
  margin: 0;
  border-top: 1px solid rgba(39, 190, 175, .13);
  color: #526b73;
  font-size: 16px;
  line-height: 1.82;
  padding: 0 26px 24px;
}

@media (max-width: 980px) {
  .hero {
    padding: 38px 24px 64px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 34px;
    max-width: 720px;
    text-align: center;
  }

  .showcase-frame {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
  }

  .content-card-list {
    grid-template-columns: 1fr;
    max-width: 720px;
  }

  .content-card-list li {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .site-header {
    padding-right: 20px;
  }

  .hero {
    padding: 24px 18px 56px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 30px;
    max-width: 100%;
    text-align: center;
  }

  .hero-title {
    font-size: 39px;
    line-height: 1.12;
  }

  .hero-desc {
    margin-bottom: 24px;
    font-size: 20px;
    line-height: 1.55;
  }

  .primary-button {
    width: 150px;
    height: 52px;
  }

  .showcase-frame {
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
  }

  .content-section {
    padding: 64px 18px 76px;
  }

  .faq-section {
    padding: 12px 18px 82px;
  }

  .section-title {
    font-size: 30px;
  }

  .section-subtitle {
    margin-bottom: 34px;
    font-size: 16px;
  }

  .content-card-list li {
    padding: 22px 20px 20px;
  }

  .content-card-title {
    font-size: 20px;
  }

  .content-card-body {
    font-size: 15px;
  }

  .faq-list {
    margin-top: 34px;
  }

  .faq-question {
    min-height: 68px;
    gap: 18px;
    font-size: 18px;
    padding: 20px;
  }

  .faq-answer {
    font-size: 15px;
    padding: 0 20px 22px;
  }
}