* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #33302e;
  background: #faf7f2;
  line-height: 1.75;
  font-size: 16px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 22px;
  background: #fffdf9;
  border-bottom: 1px solid #eee5d8;
}

.brand {
  font-size: 18px;
  font-weight: 600;
  color: #d4653a;
  text-decoration: none;
}

.top nav a {
  margin-left: 16px;
  color: #6b6560;
  text-decoration: none;
  font-size: 15px;
}

.top nav a:hover { color: #d4653a; }

main {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 22px 56px;
}

h1 { font-size: 28px; margin: 8px 0 18px; }
h2 { font-size: 20px; margin: 26px 0 10px; }
h3 { font-size: 17px; margin: 20px 0 8px; }

.hero {
  padding: 30px 26px;
  background: #fffdf9;
  border: 1px solid #eee5d8;
  border-radius: 16px;
}

.lead { font-size: 17px; color: #55504b; margin: 12px 0 20px; }

.cta { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  background: #d4653a;
  color: #fff;
  text-decoration: none;
  font-size: 15px;
}

.btn.ghost {
  background: transparent;
  color: #d4653a;
  border: 1px solid #e0b395;
}

.feat { padding-left: 20px; margin: 10px 0; }
.feat li { margin: 8px 0; }

.card, .note {
  background: #fffdf9;
  border: 1px solid #eee5d8;
  border-radius: 14px;
  padding: 18px 22px;
  margin: 16px 0;
}

.note { background: #fdf6ef; }

.tip { color: #7a736c; font-size: 14px; }
.todo {
  color: #8b7f74;
  background: #f4eee6;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
}

.art { border-bottom: 1px solid #eee5d8; padding-bottom: 14px; margin-bottom: 14px; }
.art:last-child { border-bottom: 0; }
.art p { color: #6b6560; margin: 6px 0 0; }
.art a { color: #d4653a; text-decoration: none; font-weight: 600; }

.foot {
  border-top: 1px solid #eee5d8;
  padding: 22px;
  text-align: center;
  color: #8b847d;
  font-size: 14px;
  background: #fffdf9;
}

.foot a { color: #8b847d; text-decoration: none; }
.foot a:hover { color: #d4653a; }

@media (max-width: 560px) {
  .top nav a { margin-left: 12px; font-size: 14px; }
  h1 { font-size: 24px; }
}