:root {
  --bg: #f5f8f8;
  --card: #ffffff;
  --line: #d9e4e3;
  --text: #23383a;
  --muted: #687b7c;
  --brand: #4d756c;
  --brand-dark: #355b53;
  --hot: #bc5c57;
  --soft: #e9f2f1;
  --soft-hot: #f9e9e6;
}

* {
  box-sizing: border-box;
}

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

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

.shell {
  min-height: 100vh;
  padding: 28px 18px 42px;
}

.wrap {
  width: min(980px, 100%);
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  box-shadow: 0 18px 46px rgba(39, 50, 79, 0.08);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 800;
}

.tag.hot {
  background: var(--soft-hot);
  color: #a84340;
}

h1 {
  margin: 14px 0 12px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 42px;
  line-height: 1.14;
}

.lead {
  max-width: 660px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.logo {
  display: grid;
  width: 132px;
  height: 132px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #edf5f4;
}

.logo img {
  width: 112px;
  height: 112px;
  object-fit: contain;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  min-width: 156px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
}

.btn.primary {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
}

.btn.download {
  color: #fff;
  background: var(--hot);
  border-color: var(--hot);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.card {
  min-height: 176px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 34px rgba(39, 50, 79, 0.06);
}

h2 {
  margin: 14px 0 10px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 25px;
  line-height: 1.25;
}

p,
li {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding-left: 18px;
}

@media (max-width: 760px) {
  .shell {
    padding: 18px 12px 28px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .logo {
    width: 96px;
    height: 96px;
    order: -1;
  }

  .logo img {
    width: 82px;
    height: 82px;
  }

  h1 {
    font-size: 34px;
  }

  .actions,
  .grid {
    grid-template-columns: 1fr;
  }

  .actions {
    display: grid;
  }

  .btn {
    width: 100%;
  }

  .grid {
    display: grid;
  }
}