:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background: #edf2f4;
  color: #26302d;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  min-width: 320px;
  padding: max(14px, env(safe-area-inset-top)) 14px max(22px, env(safe-area-inset-bottom));
  background:
    radial-gradient(circle at 50% 24%, rgb(255 255 255 / 94%), transparent 44%),
    linear-gradient(180deg, #f5f8f9 0%, #e7edf0 58%, #dce5e8 100%);
}

.page {
  display: grid;
  gap: 14px;
  width: min(100%, 760px);
  margin: 0 auto;
}

.intro,
.video-wrap,
.open-link {
  border: 1px solid rgb(60 75 82 / 10%);
  border-radius: 10px;
  background: rgb(255 255 255 / 84%);
  box-shadow: 0 16px 38px rgb(57 73 82 / 12%);
  backdrop-filter: blur(18px);
}

.intro {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
}

.mark {
  width: 13px;
  height: 44px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: linear-gradient(180deg, #7ad8c2 0%, #f0c15a 100%);
}

h1 {
  margin: 0;
  font-size: clamp(22px, 6vw, 34px);
  line-height: 1.15;
  letter-spacing: 0;
}

p {
  margin: 5px 0 0;
  color: #60727a;
  font-size: 15px;
}

.video-wrap {
  width: min(100%, 430px);
  margin: 0 auto;
  overflow: hidden;
  background: #101716;
  aspect-ratio: 9 / 16;
}

.video-wrap iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.open-link {
  display: grid;
  place-items: center;
  width: min(100%, 430px);
  min-height: 48px;
  margin: 0 auto;
  color: #26302d;
  font-size: 16px;
  text-decoration: none;
}

@media (min-width: 900px) {
  body {
    padding-top: 28px;
  }

  .page {
    grid-template-columns: 1fr 430px;
    align-items: start;
  }

  .intro,
  .open-link {
    grid-column: 1;
  }

  .video-wrap {
    grid-column: 2;
    grid-row: 1 / span 3;
  }
}