/* ============================================================
   可复用组件样式
   ============================================================ */

/* --- 玻璃卡片 --- */
.glass-card {
  background: var(--od-bg-card);
  backdrop-filter: blur(var(--od-glass-blur));
  -webkit-backdrop-filter: blur(var(--od-glass-blur));
  border: 1px solid var(--od-border);
  border-radius: var(--od-radius-lg);
  padding: var(--od-space-2xl);
  transition: border-color var(--od-transition-normal), box-shadow var(--od-transition-normal), transform var(--od-transition-normal);
}
.glass-card:hover {
  border-color: var(--od-border-glow);
  box-shadow: var(--od-glow-sm);
  transform: translateY(-4px);
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--od-space-sm);
  padding: 14px var(--od-space-2xl);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--od-radius-sm);
  cursor: pointer;
  transition: all var(--od-transition-normal);
  border: none;
  font-family: var(--od-font-ui);
  white-space: nowrap;
}
.btn-primary {
  background: var(--od-primary);
  color: #0a0f1e;
}
.btn-primary:hover {
  box-shadow: var(--od-glow-lg);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--od-primary);
  border: 1.5px solid var(--od-primary);
}
.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: var(--od-glow-sm);
  transform: translateY(-2px);
}
.btn-lg {
  padding: var(--od-space-lg) var(--od-space-3xl);
  font-size: var(--od-text-lg);
}
.btn-sm {
  padding: var(--od-space-sm) var(--od-space-lg);
  font-size: var(--od-text-sm);
}

/* --- 功能图标容器 --- */
.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--od-border-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--od-primary);
}
.feature-icon svg {
  width: 24px;
  height: 24px;
}
[data-theme="light"] .feature-icon {
  background: rgba(2, 132, 199, 0.06);
  border-color: rgba(2, 132, 199, 0.2);
}

/* --- 功能条目 --- */
.feature-item {
  display: flex;
  gap: var(--od-space-lg);
  align-items: flex-start;
}
.feature-item h4 {
  font-size: var(--od-text-lg);
  font-weight: 600;
  margin-bottom: var(--od-space-xs);
}
.feature-item p {
  font-size: var(--od-text-base);
  color: var(--od-text-secondary);
  line-height: 1.7;
}

/* --- 联系卡片 --- */
.contact-card {
  background: var(--od-bg-card);
  backdrop-filter: blur(var(--od-glass-blur));
  -webkit-backdrop-filter: blur(var(--od-glass-blur));
  border: 1px solid var(--od-border);
  border-radius: var(--od-radius-lg);
  padding: var(--od-space-2xl) var(--od-space-xl);
  text-align: center;
  transition: border-color var(--od-transition-normal), box-shadow var(--od-transition-normal);
}
.contact-card:hover {
  border-color: var(--od-border-glow);
  box-shadow: var(--od-glow-sm);
}
.contact-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--od-space-lg);
  color: var(--od-primary);
}
.contact-card h4 {
  font-size: var(--od-text-lg);
  font-weight: 600;
  margin-bottom: var(--od-space-sm);
}
.contact-card p {
  font-size: 15px;
  color: var(--od-text-secondary);
  font-family: var(--od-font-mono);
  word-break: break-all;
}
.contact-card .contact-label {
  font-size: var(--od-text-sm);
  color: var(--od-text-tertiary);
  font-family: var(--od-font-ui);
  margin-top: var(--od-space-xs);
  word-break: normal;
}

/* --- 统计数字 --- */
.stat-number {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--od-primary), var(--od-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: var(--od-font-mono);
}
.stat-label {
  font-size: var(--od-text-base);
  color: var(--od-text-secondary);
  margin-top: var(--od-space-xs);
}

/* --- 引擎卡片 --- */
.engine-card .engine-icon {
  width: 48px;
  height: 48px;
  color: var(--od-primary);
  margin-bottom: var(--od-space-xl);
}
.engine-card h3 {
  font-size: var(--od-text-2xl);
  font-weight: 700;
  margin-bottom: var(--od-space-sm);
}
.engine-card .engine-tag {
  margin-bottom: var(--od-space-xl);
}
.engine-card ul {
  margin-bottom: var(--od-space-xl);
}
.engine-card ul li {
  color: var(--od-text-secondary);
  font-size: var(--od-text-base);
  padding: var(--od-space-xs) 0;
  display: flex;
  align-items: center;
  gap: var(--od-space-sm);
}
.engine-card ul li::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--od-primary);
  border-radius: 50%;
  flex-shrink: 0;
}
.engine-card .engine-desc {
  font-size: var(--od-text-sm);
  color: var(--od-text-tertiary);
  border-top: 1px solid var(--od-border);
  padding-top: var(--od-space-lg);
}

/* --- FAQ 手风琴 --- */
.faq-item {
  border-bottom: 1px solid var(--od-border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--od-space-xl) 0;
  cursor: pointer;
  font-size: var(--od-text-lg);
  font-weight: 600;
  color: var(--od-text-primary);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--od-font-ui);
}
.faq-question:hover {
  color: var(--od-primary);
}
.faq-question svg {
  width: 20px;
  height: 20px;
  transition: transform var(--od-transition-normal);
  flex-shrink: 0;
  color: var(--od-text-tertiary);
}
.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--od-transition-normal);
}
.faq-item.open .faq-answer {
  max-height: 300px;
}
.faq-answer p {
  padding: 0 0 var(--od-space-xl);
  color: var(--od-text-secondary);
  line-height: 1.8;
}

/* --- 定价卡片 --- */
.pricing-card {
  background: var(--od-bg-card);
  backdrop-filter: blur(var(--od-glass-blur));
  -webkit-backdrop-filter: blur(var(--od-glass-blur));
  border: 1px solid var(--od-border);
  border-radius: var(--od-radius-lg);
  padding: var(--od-space-3xl) var(--od-space-2xl);
  display: flex;
  flex-direction: column;
}
.pricing-card.featured {
  border-color: var(--od-border-glow);
  box-shadow: var(--od-glow-sm);
  position: relative;
}
.pricing-card.featured::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--od-radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--od-primary), var(--od-accent-purple));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.pricing-card h3 {
  font-size: var(--od-text-3xl);
  font-weight: 700;
  margin-bottom: var(--od-space-sm);
}
.pricing-price {
  font-size: 40px;
  font-weight: 800;
  font-family: var(--od-font-mono);
  margin-bottom: var(--od-space-xl);
}
.pricing-price .price-unit {
  font-size: var(--od-text-base);
  font-weight: 400;
  color: var(--od-text-secondary);
}
.pricing-desc {
  font-size: var(--od-text-base);
  color: var(--od-text-secondary);
  margin-bottom: var(--od-space-2xl);
  line-height: 1.7;
}
.pricing-features {
  flex: 1;
  margin-bottom: var(--od-space-2xl);
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--od-space-md);
  padding: var(--od-space-sm) 0;
  font-size: var(--od-text-base);
  color: var(--od-text-secondary);
}
.pricing-features li svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}
.pricing-features li .check {
  color: var(--od-success);
}
.pricing-features li .cross {
  color: var(--od-text-tertiary);
}
.pricing-features li.disabled {
  color: var(--od-text-tertiary);
  text-decoration: line-through;
}

/* --- 文档卡片 --- */
.doc-card {
  background: var(--od-bg-card);
  backdrop-filter: blur(var(--od-glass-blur));
  -webkit-backdrop-filter: blur(var(--od-glass-blur));
  border: 1px solid var(--od-border);
  border-radius: var(--od-radius-lg);
  padding: var(--od-space-2xl);
  transition: border-color var(--od-transition-normal), box-shadow var(--od-transition-normal), transform var(--od-transition-normal);
  display: flex;
  flex-direction: column;
}
.doc-card p {
  flex: 1;
}
.doc-card:hover {
  border-color: var(--od-border-glow);
  box-shadow: var(--od-glow-sm);
  transform: translateY(-4px);
}
.doc-card .doc-icon {
  width: 48px;
  height: 48px;
  color: var(--od-primary);
  margin-bottom: var(--od-space-lg);
}
.doc-card h3 {
  font-size: var(--od-text-xl);
  font-weight: 600;
  margin-bottom: var(--od-space-sm);
}
.doc-card p {
  font-size: var(--od-text-base);
  color: var(--od-text-secondary);
  line-height: 1.7;
}

/* --- 场景卡片 --- */
.usecase-card {
  background: var(--od-bg-card);
  backdrop-filter: blur(var(--od-glass-blur));
  -webkit-backdrop-filter: blur(var(--od-glass-blur));
  border: 1px solid var(--od-border);
  border-radius: var(--od-radius-lg);
  padding: var(--od-space-2xl);
  transition: border-color var(--od-transition-normal), box-shadow var(--od-transition-normal);
}
.usecase-card:hover {
  border-color: var(--od-border-glow);
  box-shadow: var(--od-glow-sm);
}
.usecase-card .usecase-icon {
  width: 56px;
  height: 56px;
  color: var(--od-primary);
  margin-bottom: var(--od-space-xl);
}
.usecase-card h3 {
  font-size: var(--od-text-2xl);
  font-weight: 700;
  margin-bottom: var(--od-space-sm);
}
.usecase-card .usecase-challenge {
  font-size: var(--od-text-base);
  color: var(--od-text-tertiary);
  margin-bottom: var(--od-space-lg);
  font-style: italic;
}
.usecase-card .usecase-desc {
  font-size: var(--od-text-base);
  color: var(--od-text-secondary);
  margin-bottom: var(--od-space-lg);
  line-height: 1.7;
}
.usecase-card .usecase-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--od-space-sm);
}