/* 关于页面 — 智趣微光 */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #f3f4f8;
  color: #1a1a2e;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.about-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px 48px;
}

h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #64748B, #475569);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -.5px;
}

.intro {
  background: #fff;
  border-radius: 16px;
  padding: 24px 28px;
  margin-bottom: 24px;
  border: 1px solid #e5e7ef;
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
}

.intro p {
  font-size: 15px;
  color: #5b6275;
}

.intro p + p {
  margin-top: 8px;
}

h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 28px 0 14px;
  color: #64748B;
  letter-spacing: .2px;
}

section {
  margin-bottom: 24px;
  background: #fff;
  border-radius: 16px;
  padding: 24px 28px;
  border: 1px solid #e5e7ef;
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
}

ul {
  padding-left: 20px;
  list-style: none;
}

li {
  margin: 8px 0;
  padding: 6px 0;
  font-size: 14px;
  color: #5b6275;
  position: relative;
  padding-left: 20px;
}

li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #64748B;
  opacity: .5;
}

.contact p {
  font-size: 14px;
  color: #5b6275;
}

.back {
  margin-top: 36px;
  text-align: center;
}

.back a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #64748B;
  text-decoration: none;
  font-size: 14px;
  font-weight: 550;
  padding: 10px 24px;
  border-radius: 24px;
  border: 1.5px solid #e5e7ef;
  transition: all .2s;
}

.back a:hover {
  background: #F1F5F9;
  border-color: #64748B;
}

@media (max-width: 640px) {
  .about-page {
    padding: 40px 16px 32px;
  }
  h1 {
    font-size: 1.6rem;
  }
  section, .intro {
    padding: 18px 16px;
    border-radius: 14px;
  }
}