/* ========================================
   数智化研发服务频道 - 专属样式
   ======================================== */

/* 服务模式卡片 */
.service-mode-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-3xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-mode-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-orange));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-mode-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-cyan);
}

.service-mode-card:hover::before {
  opacity: 1;
}

.service-mode-card .mode-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.service-mode-card h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.service-mode-card .mode-desc {
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
}

.service-mode-card .mode-scene {
  background: var(--color-gray-50);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.service-mode-card .mode-scene h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-cyan);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.service-mode-card .mode-scene p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.7;
}

.service-mode-card .mode-list {
  list-style: none;
  padding: 0;
  margin-bottom: var(--spacing-xl);
}

.service-mode-card .mode-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.6;
}

.service-mode-card .mode-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-cyan);
  flex-shrink: 0;
  margin-top: 8px;
}

.service-mode-card .mode-price {
  background: linear-gradient(135deg, rgba(0,212,170,0.08), rgba(255,107,53,0.05));
  border: 1px solid rgba(0,212,170,0.2);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
}

.service-mode-card .mode-price h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-orange);
  margin-bottom: var(--spacing-sm);
}

.service-mode-card .mode-price p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* 技术架构分层 */
.tech-arch-layers {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.tech-arch-layer {
  display: flex;
  align-items: stretch;
  gap: var(--spacing-lg);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl) var(--spacing-2xl);
  transition: all var(--transition-base);
}

.tech-arch-layer:hover {
  border-color: var(--color-cyan);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.tech-arch-layer .layer-num {
  width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-cyan);
  opacity: 0.3;
  flex-shrink: 0;
}

.tech-arch-layer .layer-content {
  flex: 1;
}

.tech-arch-layer .layer-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.tech-arch-layer .layer-name .layer-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.tech-arch-layer .layer-desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.tech-arch-layer .layer-techs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tech-arch-layer .layer-tech {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-gray-600);
  transition: all var(--transition-fast);
}

.tech-arch-layer:hover .layer-tech {
  background: rgba(0,212,170,0.1);
  color: var(--color-cyan);
}

/* 研发规范 */
.dev-standards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.dev-standard-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.dev-standard-item:hover {
  border-color: var(--color-cyan);
  box-shadow: var(--shadow-md);
}

.dev-standard-item .std-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(0,212,170,0.15), rgba(0,212,170,0.05));
  color: var(--color-cyan);
}

.dev-standard-item h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 4px;
}

.dev-standard-item p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: 1.6;
}

/* 案例卡片 */
.case-list-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.case-list-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-cyan);
}

.case-list-card .case-icon {
  width: 100px;
  height: 100px;
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.case-list-card .case-body {
  flex: 1;
}

.case-list-card .case-body .case-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.case-list-card .case-body h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.case-list-card .case-body p {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.case-list-card .case-metrics {
  display: flex;
  gap: var(--spacing-xl);
}

.case-list-card .case-metric {
  text-align: center;
}

.case-list-card .case-metric .metric-val {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-cyan);
}

.case-list-card .case-metric .metric-lbl {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

.case-list-card .case-arrow {
  flex-shrink: 0;
  color: var(--color-gray-400);
  transition: all var(--transition-base);
}

.case-list-card:hover .case-arrow {
  color: var(--color-cyan);
  transform: translateX(4px);
}

/* 案例详情 */
.case-detail-section {
  margin-bottom: var(--spacing-2xl);
}

.case-detail-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.case-detail-section h2 .section-tag {
  display: inline-block;
  width: 4px;
  height: 24px;
  background: linear-gradient(to bottom, var(--color-cyan), var(--color-orange));
  border-radius: 2px;
}

.case-challenge-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.case-challenge-item {
  padding: var(--spacing-xl);
  background: var(--color-gray-50);
  border-radius: var(--border-radius-lg);
  border-left: 3px solid var(--color-orange);
}

.case-challenge-item .challenge-num {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-orange);
  margin-bottom: var(--spacing-sm);
}

.case-challenge-item h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.case-challenge-item p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
}

.case-solution-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.case-solution-item {
  padding: var(--spacing-xl);
  background: var(--color-gray-50);
  border-radius: var(--border-radius-lg);
  border-left: 3px solid var(--color-cyan);
}

.case-solution-item .solution-num {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-cyan);
  margin-bottom: var(--spacing-sm);
}

.case-solution-item h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.case-solution-item p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
}

.case-result-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.case-result-metric {
  text-align: center;
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, rgba(0,212,170,0.08), rgba(255,107,53,0.05));
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(0,212,170,0.15);
}

.case-result-metric .result-value {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-cyan);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.case-result-metric .result-change {
  font-size: var(--font-size-sm);
  color: var(--color-orange);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.case-result-metric .result-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.case-quote {
  background: var(--color-gray-50);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl) var(--spacing-3xl);
  position: relative;
  margin-top: var(--spacing-2xl);
}

.case-quote::before {
  content: '\201C';
  font-size: 72px;
  color: var(--color-cyan);
  opacity: 0.2;
  position: absolute;
  top: -10px;
  left: 20px;
  font-family: Georgia, serif;
  line-height: 1;
}

.case-quote p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-700);
  line-height: 1.8;
  font-style: italic;
  position: relative;
  z-index: 1;
}

.case-quote .quote-author {
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  font-style: normal;
}

/* 流程步骤 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 50px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-orange));
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process-step .step-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-xl);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  transition: all var(--transition-base);
}

.process-step .step-circle.circle-cyan {
  background: linear-gradient(135deg, rgba(0,212,170,0.15), rgba(0,212,170,0.05));
  color: var(--color-cyan);
  border: 2px solid rgba(0,212,170,0.3);
}

.process-step .step-circle.circle-orange {
  background: linear-gradient(135deg, rgba(255,107,53,0.15), rgba(255,107,53,0.05));
  color: var(--color-orange);
  border: 2px solid rgba(255,107,53,0.3);
}

.process-step .step-circle.circle-ai {
  background: linear-gradient(135deg, rgba(124,58,237,0.15), rgba(124,58,237,0.05));
  color: var(--color-ai);
  border: 2px solid rgba(124,58,237,0.3);
}

.process-step:hover .step-circle {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.process-step h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.process-step .step-time {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
}

.process-step .step-desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
}

.process-step .step-details {
  list-style: none;
  padding: 0;
  margin-top: var(--spacing-md);
  text-align: left;
}

.process-step .step-details li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: 6px 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.5;
}

.process-step .step-details li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-cyan);
  flex-shrink: 0;
  margin-top: 7px;
}

/* 流程简图（首页用） */
.process-brief {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.process-brief-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.process-brief-node {
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-700);
  transition: all var(--transition-base);
}

.process-brief-node:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  box-shadow: var(--shadow-md);
}

.process-brief-arrow {
  color: var(--color-gray-400);
  font-size: var(--font-size-xl);
}

/* FAQ 折叠样式 */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--color-cyan);
}

.faq-item.active {
  border-color: var(--color-cyan);
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xl) var(--spacing-2xl);
  cursor: pointer;
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
  transition: all var(--transition-fast);
  background: var(--color-white);
  width: 100%;
  text-align: left;
}

.faq-question:hover {
  color: var(--color-cyan);
}

.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.faq-item.active .faq-question .faq-icon {
  background: var(--color-cyan);
  color: var(--color-white);
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-answer-inner {
  padding: 0 var(--spacing-2xl) var(--spacing-xl);
  color: var(--color-gray-600);
  line-height: 1.8;
  font-size: var(--font-size-sm);
}

/* 技术栈展示 */
.tech-stack-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-lg);
}

.tech-stack-item {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.tech-stack-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-cyan);
}

.tech-stack-item .stack-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
}

.tech-stack-item h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.tech-stack-item .stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}

.tech-stack-item .stack-tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--color-gray-100);
  border-radius: var(--border-radius-full);
  font-size: 10px;
  font-weight: 600;
  color: var(--color-gray-600);
}

/* 资质徽章 */
.qual-badges {
  display: flex;
  gap: var(--spacing-xl);
  justify-content: center;
  flex-wrap: wrap;
}

.qual-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xl) var(--spacing-2xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.qual-badge:hover {
  border-color: var(--color-cyan);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.qual-badge .qual-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0,212,170,0.15), rgba(0,212,170,0.05));
  color: var(--color-cyan);
}

.qual-badge h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-align: center;
}

/* 首页核心数据 */
.rd-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin: var(--spacing-2xl) 0;
}

.rd-stat {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.rd-stat:hover {
  border-color: var(--color-cyan);
  box-shadow: var(--shadow-md);
}

.rd-stat .rd-stat-num {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--color-cyan);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.rd-stat .rd-stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .tech-arch-layers {
    gap: var(--spacing-sm);
  }

  .tech-arch-layer {
    padding: var(--spacing-lg) var(--spacing-xl);
  }

  .tech-stack-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .process-steps::before {
    display: none;
  }

  .case-challenge-list,
  .case-solution-list,
  .case-result-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .dev-standards {
    grid-template-columns: 1fr;
  }

  .rd-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .service-mode-card {
    padding: var(--spacing-xl);
  }

  .tech-arch-layer {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .tech-arch-layer .layer-num {
    width: auto;
    justify-content: flex-start;
    font-size: var(--font-size-2xl);
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-brief {
    flex-direction: column;
  }

  .process-brief-arrow {
    transform: rotate(90deg);
  }

  .case-list-card {
    flex-direction: column;
    text-align: center;
  }

  .case-list-card .case-metrics {
    justify-content: center;
  }

  .case-list-card .case-arrow {
    display: none;
  }

  .case-challenge-list,
  .case-solution-list,
  .case-result-metrics {
    grid-template-columns: 1fr;
  }

  .case-quote {
    padding: var(--spacing-xl);
  }

  .qual-badges {
    gap: var(--spacing-md);
  }

  .qual-badge {
    padding: var(--spacing-md) var(--spacing-lg);
  }

  .rd-stats {
    grid-template-columns: 1fr;
  }

  .faq-question {
    padding: var(--spacing-lg);
    font-size: var(--font-size-sm);
  }

  .faq-answer-inner {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
  }
}

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

  .case-result-metric .result-value {
    font-size: var(--font-size-3xl);
  }
}