/* ================== 关于页 ================== */

.about-wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
  font-family: 'Noto Sans SC', -apple-system, sans-serif;
}
.about-card {
  background: var(--trans-light, var(--c-card-bg));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 24px;
  padding: 2.5rem 3rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 24px rgba(22, 119, 179,0.08);
  transition: box-shadow 0.3s ease;
}
.about-card:hover {
  box-shadow: 0 8px 36px rgba(22, 119, 179,0.14);
}
.about-card h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary, var(--c-primary));
  margin: 0 0 1.2rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid rgba(22, 119, 179,0.15);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.about-card h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.1em;
  background: var(--primary, var(--c-primary));
  border-radius: 2px;
}
.about-card p {
  margin: 0 0 0.9rem;
  line-height: 1.85;
  color: var(--font-color, var(--c-text));
}
.about-card p:last-child { margin-bottom: 0; }
.about-welcome {
  text-align: center;
  padding: 2rem 3rem 1.5rem;
}
.about-welcome h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary, var(--c-primary));
  margin: 0 0 1rem;
}
.about-welcome .subtitle {
  font-size: 1rem;
  color: #666;
  line-height: 1.8;
  margin: 0 auto;
  max-width: 600px;
}
.about-me-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}
.about-mini-card {
  background: rgba(255,255,255,0.5);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--font-color, var(--c-text));
  border: 1px solid rgba(22, 119, 179,0.1);
  transition: transform 0.2s ease;
}
.about-mini-card:hover { transform: translateY(-2px); }
.about-mini-card strong { color: var(--primary, var(--c-primary)); }
.about-faq-item { margin-bottom: 1.2rem; }
.about-faq-item:last-child { margin-bottom: 0; }
.about-faq-q {
  font-weight: 600;
  color: var(--primary, var(--c-primary));
  margin-bottom: 0.3rem;
  font-size: 0.95rem;
}
.about-faq-a {
  color: #555;
  line-height: 1.75;
  padding-left: 1rem;
  border-left: 3px solid rgba(22, 119, 179,0.2);
}
.about-resource-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}
.about-resource-list li {
  padding: 0.5rem 0;
  color: #555;
  line-height: 1.7;
  border-bottom: 1px dashed rgba(22, 119, 179,0.12);
}
.about-resource-list li:last-child { border-bottom: none; }
.about-resource-list li strong { color: var(--primary, var(--c-primary)); }
.about-resource-list li a { color: var(--primary, var(--c-primary)); text-decoration: underline; }
.about-closing {
  text-align: center;
  padding: 2rem 3rem;
}
.about-closing p {
  font-size: 0.95rem;
  color: #666;
  margin-bottom: 0.5rem;
}
.about-closing .big-text {
  font-size: 1.05rem;
  color: #444;
}

/* 暗黑模式 — 统一使用 butterfly 标准选择器 */
html[data-theme='dark'] .about-card,
html[data-theme='dark'] .about-card {
  background: rgba(30,40,35,0.6);
  border-color: rgba(255,255,255,0.08);
}
html[data-theme='dark'] .about-mini-card,
html[data-theme='dark'] .about-mini-card {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.08);
}

/* 变量别名（兼容 about 页面原有写法） */
:root {
  --trans-light: var(--c-card-bg);
  --primary: var(--c-primary);
  --font-color: var(--c-text);
}
html[data-theme='dark'],
html[data-theme='dark'] {
  --trans-light: rgba(30,40,35,0.6);
  --primary: var(--c-primary);
  --font-color: var(--c-text);
}

@media (max-width: 600px) {
  .about-wrap { padding: 1rem 0.5rem 3rem; }
  .about-card { padding: 1.5rem 1.2rem; border-radius: 18px; }
  .about-welcome, .about-closing { padding: 1.5rem 1.2rem; }
}