/* ===================================================
   about.css - 关于页专属样式
   =================================================== */

/* ---------- Mission ---------- */
.mission-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.mission-stat {
  text-align: center;
  padding: 20px 24px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 120px;
}

.ms-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.ms-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Mission Visual Card */
.mission-card {
  background: var(--gradient-card);
  border: 1px solid rgba(26, 110, 245, 0.2);
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.mc-header {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.mc-regions {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mc-region {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mc-flag {
  font-size: 1.4rem;
  width: 32px;
  text-align: center;
}

.mc-rname {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 2px;
}

.mc-rcount {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.mc-status {
  margin-left: auto;
  font-size: 0.8rem;
  font-weight: 500;
}

.mc-status.green { color: var(--accent); }

/* ---------- Team ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-active);
}

.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
}

.team-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-role {
  font-size: 0.8rem;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.team-bio {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- FAQ ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 0.98rem;
  font-weight: 500;
  text-align: left;
  transition: color var(--transition);
}

.faq-q:hover {
  color: var(--primary-light);
}

.faq-arrow {
  font-size: 1.4rem;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
  line-height: 1;
}

.faq-q[aria-expanded="true"] .faq-arrow {
  transform: rotate(90deg);
  color: var(--primary-light);
}

.faq-a {
  display: none;
  padding-bottom: 24px;
}

.faq-a.open {
  display: block;
}

.faq-a p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}

.contact-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-active);
}

.cc-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.contact-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.contact-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mission-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .team-grid {
    grid-template-columns: 1fr;
  }
}