/* =========================================
 * 关于页 — 专属样式（共用样式走 main.css）
 * 仅持有 about- 前缀的相关样式
 * ========================================= */

.about-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.about-hero {
  text-align: center;
  margin-bottom: 44px;
}

.about-hero-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.about-accent {
  background: linear-gradient(120deg, var(--grad-cta-start), var(--grad-cta-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.about-hero-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.8;
}

.about-hero-subtitle strong { color: var(--text-primary); }

.about-section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.about-section-title-sm { margin-bottom: 12px; }

/* 痛点卡片 */
.about-pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 20px;
  margin-bottom: 36px;
}

.about-pain-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease,
              background-color 0.25s ease, border-color 0.25s ease;
}

.about-pain-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.about-pain-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.about-pain-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--brand-soft);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.about-pain-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}

.about-pain-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 标准卡片 */
.about-standard-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 36px;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.about-standard-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.about-standard-list li strong { color: var(--text-primary); }

/* 主理人卡片 */
.about-founder-card {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--brand-soft) 100%);
  border: 1px solid var(--brand-soft);
  border-radius: 16px;
  padding: 32px;
  position: relative;
}

[data-theme="dark"] .about-founder-card {
  border-color: rgba(167, 139, 250, 0.25);
}

.about-founder-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.about-avatar {
  width: 52px;
  height: 52px;
  background: var(--brand);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

[data-theme="dark"] .about-avatar { box-shadow: 0 4px 12px rgba(167, 139, 250, 0.3); }

.about-founder-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.about-founder-quote {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.about-founder-quote p { margin-bottom: 10px; }
.about-founder-quote p:last-child { margin-bottom: 0; }

/* 联系区 */
.about-contact-footer {
  border-top: 1px dashed var(--brand-soft);
  padding-top: 20px;
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  font-size: 14px;
}

.about-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.about-contact-item strong { color: var(--text-primary); }

.about-footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 40px;
}

/* 响应式 */
@media (max-width: 640px) {
  .about-hero-title { font-size: 26px; }
  .about-pain-grid  { grid-template-columns: 1fr; }
  .about-founder-card { padding: 24px 20px; }
}