:root {
  --bg: #f6f2ea;
  --paper: #fffdf8;
  --text: #27231e;
  --muted: #6f675c;
  --line: #ddd5c7;
  --accent: #9b5b3d;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.78;
}

.wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 34px 22px 64px;
}

header.site {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--text);
  font-size: 17px;
  font-weight: 650;
  letter-spacing: 0.01em;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

nav a {
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

nav a:hover {
  color: var(--accent);
}

main {
  padding: 40px 38px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 12px 34px rgba(70, 55, 40, 0.055);
}

h1 {
  margin: 0 0 8px;
  font-size: 30px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h2 {
  margin: 34px 0 10px;
  font-size: 20px;
  line-height: 1.4;
}

h3 {
  margin: 26px 0 8px;
  font-size: 17px;
}

p {
  margin: 0 0 14px;
}

p.meta {
  margin-bottom: 26px;
  color: var(--muted);
  font-size: 13px;
}

ul {
  margin: 0 0 16px;
  padding-left: 1.3em;
}

li {
  margin: 4px 0;
}

a {
  color: var(--accent);
}

.hero {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 30px;
}

.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 21px;
  box-shadow: 0 9px 22px rgba(40, 30, 22, 0.18);
}

.lead {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 30px 0;
}

.feature {
  padding: 18px 18px 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbf8f1;
}

.feature h2 {
  margin: 0 0 6px;
  font-size: 16px;
}

.feature p {
  color: var(--muted);
  font-size: 14px;
}

.links {
  margin-top: 28px;
}

footer {
  margin-top: 26px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

footer p {
  margin: 2px 0;
}

@media (max-width: 620px) {
  .wrap {
    padding: 20px 14px 42px;
  }

  header.site {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  main {
    padding: 26px 19px;
    border-radius: 14px;
  }

  h1 {
    font-size: 24px;
  }

  .hero {
    gap: 15px;
  }

  .app-icon {
    width: 72px;
    height: 72px;
    border-radius: 16px;
  }

  .features {
    grid-template-columns: 1fr;
  }
}