/* ========================================
   关于我们页
   ======================================== */

.about-hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 40px;
  /* background-color: #fcfcfd; */
  border-bottom: 1px solid #f3f4f6;
  background-image: url("/images/about/banner.webp");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.about-hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.about-hero-title {
  font-size: clamp(26px, 5vw, 32px);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.about-hero-sub {
  font-size: 16px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

.about-brand {
  padding: 2px 0 56px;
  background: var(--bg-primary);
}

.about-tabs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  justify-content: center;
  margin-bottom: 28px;
  border-bottom: 1px solid #f3f4f6;
  padding-bottom: 0;
}

.about-tab-btn {
  font-family: var(--font-cn);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 12px 14px 14px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition:
    color 0.2s,
    border-color 0.2s;
  border-radius: 0;
}

/* .about-tab-btn:hover {
  color: var(--primary);
}

.about-tab-btn.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom-color: var(--primary);
} */

.about-tab-btn:hover {
  color: var(--primary, #3a78ff);
}
.about-tab-btn.active {
  color: var(--primary, #3a78ff);
  font-weight: 700;
  position: relative;
}
.about-tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 4px;
  background-color: var(--primary, #3a78ff);
  border-radius: 2px;
}

.about-tab-panels {
  max-width: 720px;
  margin: 0 auto;
  background: linear-gradient(180deg, #fafbfc 0%, var(--gray-50) 100%);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  min-height: 140px;
  box-shadow:
    0 8px 32px rgba(15, 23, 42, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.about-tab-panel {
  display: none;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.about-tab-panel.active {
  display: block;
}

.about-tab-panel p {
  margin: 0;
}

.about-contact {
  padding: 64px 0;
  background: #f9fafb;
}

@media screen and (max-width: 600px) {
  .about-contact {
    background-color: transparent;
    padding-top: 16px;
  }
}

.about-contact-card {
  max-width: 640px;
  margin: 0 auto;
  background: linear-gradient(170deg, #8ebbfe5e 0%, #ffffff 70%);
  backdrop-filter: blur(6px);
  border-radius: 20px;
  padding: 24px 40px 48px 40px;
  text-align: center;
  box-shadow:
    0 2px 20px rgba(6, 38, 116, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.about-contact-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.about-contact-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.contact-tg-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.contact-tg-badge {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  color: #2563eb;
  background: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  line-height: 1.6;
}

.contact-tg-handle {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}
.contact-tg-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--gray-200, #e5e7eb);
  background: var(--bg-primary, #fff);
  color: var(--text-tertiary, #9ca3af);
  cursor: pointer;
  transition: all 0.2s;
}
.contact-tg-copy:hover {
  border-color: var(--primary, #3a78ff);
  color: var(--primary, #3a78ff);
  background: rgba(58, 120, 255, 0.04);
}
.contact-tg-copy .check-icon {
  display: none;
  color: #22c55e;
}
.contact-tg-copy.copied .copy-icon {
  display: none;
}
.contact-tg-copy.copied .check-icon {
  display: block;
}
.contact-tg-copy.copied {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.06);
}

.btn-contact-tg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #3eb5ed;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 12px;
  transition: all 0.3s var(--ease-spring);
  box-shadow:
    0 8px 22px rgba(71, 188, 245, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
  text-decoration: none;
}

.btn-contact-tg:hover {
  background: #32a5db;
  transform: translateY(-2px);
  box-shadow:
    0 12px 28px rgba(71, 188, 245, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
  color: #ffffff;
}

@media (max-width: 640px) {
  .about-contact-card {
    padding: 40px 24px;
  }
}

@media (max-width: 480px) {
  .about-tabs-nav {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
  }

  .about-tab-btn {
    flex-shrink: 0;
    padding-left: 12px;
    padding-right: 12px;
  }

  .about-tab-panels {
    padding: 20px 16px;
  }
}