/* =====================================================
   到可到对货 官网 - 安全保障页样式
   ===================================================== */

.security-hero { background: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 60%, #F8FAFC 100%); }

/* ─── 安全概览 ─── */
.security-overview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.security-overview-card {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-normal);
}

.security-overview-card:hover {
  border-color: var(--color-security);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.security-overview-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-security-bg);
  color: var(--color-security);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin: 0 auto var(--spacing-md);
}

.security-overview-card h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.security-overview-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ─── 验货码机制 ─── */
.verify-code-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  margin-bottom: var(--spacing-2xl);
}

.security-flow-img {
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.verify-code-content h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
}

.verify-code-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.verify-code-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.verify-code-step-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-security-bg);
  color: var(--color-security);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.verify-code-step strong {
  display: block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.verify-code-step p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.85;
}

/* 验货码规格 */
.verify-code-specs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  background: var(--color-security-bg);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  border: 1px solid #BAE6FD;
}

.verify-code-spec-item {
  text-align: center;
}

.spec-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.spec-value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-security);
}

/* ─── 数据锁定 ─── */
.security-detail-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.lock-mechanism-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.lock-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.lock-item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-security-bg);
  color: var(--color-security);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.lock-item strong {
  display: block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.lock-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.85;
}

/* 锁定状态卡片 */
.lock-status-card {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  max-width: 360px;
  margin: 0 auto;
}

.lock-status-header {
  background: var(--color-security);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

.lock-status-body {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lock-status-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.lock-status-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.lock-status-badge {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.lock-status-badge.locked {
  background: #FEE2E2;
  color: var(--color-danger);
}

.lock-status-badge.active {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.lock-status-footer {
  padding: 12px 20px;
  background: var(--color-success-bg);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ─── 团队隔离 ─── */
.isolation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.isolation-card {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

.isolation-card:hover {
  border-color: var(--color-security);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.isolation-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-security-bg);
  color: var(--color-security);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: var(--spacing-md);
}

.isolation-card h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.isolation-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.85;
}

/* ─── 双签对账 ─── */
.dual-sign-block {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
}

.dual-sign-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.dual-sign-role {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

.dual-sign-role i {
  font-size: 36px;
}

.dual-sign-role.sender i { color: var(--color-primary); }
.dual-sign-role.receiver i { color: var(--color-success); }

.dual-sign-action {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.dual-sign-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.dual-sign-lock {
  background: var(--color-security);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.dual-sign-lock i { font-size: 24px; }
.dual-sign-lock span { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); }
.dual-sign-lock-sub { font-size: var(--font-size-xs); opacity: 0.85; }

.dual-sign-arrow {
  color: var(--color-text-muted);
  font-size: 14px;
}

.dual-sign-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--color-security-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  border: 1px solid #BAE6FD;
}

.dual-sign-note i { color: var(--color-security); margin-top: 2px; flex-shrink: 0; }

/* ─── 动画 ─── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.animate-on-scroll.visible { opacity: 1; transform: none; }

/* ─── 响应式 ─── */
@media (max-width: 1024px) {
  .security-overview-grid { grid-template-columns: repeat(2, 1fr); }
  .verify-code-block { grid-template-columns: 1fr; gap: 32px; }
  .verify-code-specs { grid-template-columns: repeat(3, 1fr); }
  .security-detail-block { grid-template-columns: 1fr; gap: 32px; }
  .isolation-grid { grid-template-columns: repeat(2, 1fr); }
  .dual-sign-block { grid-template-columns: 1fr; gap: 20px; }
  .dual-sign-center { flex-direction: row; }
  .dual-sign-arrow.up { transform: rotate(-90deg); }
  .dual-sign-arrow.down { transform: rotate(90deg); }
}

@media (max-width: 768px) {
  .security-overview-grid { grid-template-columns: 1fr; }
  .verify-code-specs { grid-template-columns: repeat(2, 1fr); }
  .isolation-grid { grid-template-columns: 1fr; }
}