/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: '小米兰亭 Pro VF', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: #f0f2f5;
  color: #555;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: #2C9AB7;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: #52bad5;
  opacity: 1;
}

/* ===== Layout ===== */
.page-wrapper {
  max-width: 780px;
  margin: 40px auto;
  padding: 0 20px;
}

/* ===== Back Button ===== */
.back-btn {
  display: inline-block;
  margin-bottom: 24px;
  padding: 8px 24px;
  background: #fff;
  color: #666;
  border-radius: 20px;
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: all 0.2s ease;
}

.back-btn:hover {
  background: #2C9AB7;
  color: #fff;
  box-shadow: 0 4px 12px rgba(44, 154, 183, 0.3);
}

/* ===== Profile Card ===== */
.profile-card {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.profile-banner {
  background: linear-gradient(135deg, #52bad5, #2C9AB7);
  padding: 48px 0 72px;
  text-align: center;
  position: relative;
}

.profile-banner .logo-text {
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  position: absolute;
  top: 20px;
  left: 24px;
}

.avatar-wrapper {
  text-align: center;
}

.avatar {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  border: 4px solid #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  object-fit: cover;
  position: relative;
  top: 52px;
}

.profile-info {
  text-align: center;
  padding: 56px 32px 32px;
}

.profile-info h1 {
  font-size: 28px;
  color: #333;
  font-weight: 700;
  margin-bottom: 4px;
}

.profile-info .subtitle {
  font-size: 14px;
  color: #aaa;
  margin-bottom: 16px;
}

.profile-info .bio {
  font-size: 14px;
  color: #777;
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.8;
  padding-bottom: 24px;
  border-bottom: 1px solid #eee;
}

/* ===== Social Icons ===== */
.social-bar {
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 24px 32px;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.social-icon:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

.social-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Content Sections ===== */
.content-area {
  margin-top: 28px;
}

.section-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  padding: 32px;
  margin-bottom: 24px;
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  color: #333;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #52bad5;
  display: inline-block;
}

/* ===== Contact Section ===== */
.contact-list {
  list-style: none;
}

.contact-list li {
  padding: 12px 0;
  border-bottom: 1px solid #f5f5f5;
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 14px;
}

.contact-list li:last-child {
  border-bottom: none;
}

.contact-label {
  font-weight: 600;
  color: #52bad5;
  min-width: 60px;
  flex-shrink: 0;
}

.contact-value {
  color: #666;
}

/* ===== Experience / Thoughts ===== */
.exp-item {
  padding: 16px 0;
  border-bottom: 1px solid #f5f5f5;
}

.exp-item:last-child {
  border-bottom: none;
}

.exp-item h3 {
  font-size: 16px;
  color: #333;
  font-weight: 600;
  margin-bottom: 4px;
}

.exp-item .exp-meta {
  font-size: 12px;
  color: #aaa;
  margin-bottom: 8px;
}

.exp-item p {
  font-size: 14px;
  color: #888;
  line-height: 1.7;
}

/* ===== External Links ===== */
.ext-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.ext-link {
  display: inline-block;
  padding: 10px 24px;
  background: #f8f9fa;
  border: 1px solid #eee;
  border-radius: 24px;
  font-size: 13px;
  color: #666;
  transition: all 0.2s ease;
}

.ext-link:hover {
  background: #2C9AB7;
  border-color: #2C9AB7;
  color: #fff;
  opacity: 1;
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 28px 0 40px;
  font-size: 12px;
  color: #bbb;
  letter-spacing: 1px;
}

.site-footer span {
  color: #999;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .page-wrapper {
    margin: 20px auto;
  }

  .profile-banner {
    padding: 36px 0 56px;
  }

  .avatar {
    width: 100px;
    height: 100px;
    top: 38px;
  }

  .profile-info {
    padding: 44px 20px 24px;
  }

  .profile-info h1 {
    font-size: 22px;
  }

  .section-card {
    padding: 24px 20px;
  }

  .contact-list li {
    flex-direction: column;
    gap: 4px;
  }

  .social-bar {
    gap: 12px;
  }

  .ext-links {
    flex-direction: column;
  }

  .ext-link {
    text-align: center;
  }
}