/* ========================================
   内页通用样式 - 横幅/面包屑/分页
   ======================================== */

/* 页面横幅 */
.page-banner {
  position: relative;
  background: linear-gradient(135deg, #021C0E 0%, #064E3B 50%, #022C22 100%);
  color: var(--color-white);
  padding: 160px 0 80px;
  overflow: hidden;
}

.page-banner-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.page-banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(2, 28, 14, 0.85) 0%, rgba(6, 78, 59, 0.75) 50%, rgba(2, 44, 34, 0.85) 100%);
}

.page-banner-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16, 185, 129, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.1) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, #000 30%, transparent 80%);
  z-index: 1;
}

.page-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-pale);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--color-pale);
  transition: color var(--t-fast);
}

.breadcrumb a:hover {
  color: var(--color-bright);
}

.breadcrumb-separator {
  opacity: 0.5;
}

.breadcrumb-current {
  color: var(--color-bright);
  font-weight: 600;
}

.page-banner h1 {
  color: var(--color-white);
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-banner h1 .highlight {
  background: linear-gradient(135deg, #6EE7B7 0%, #34D399 50%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-banner-subtitle {
  color: var(--color-pale);
  font-size: 1.15rem;
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.7;
}

.page-banner-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  z-index: 1;
  animation: blob 15s ease-in-out infinite;
}

/* 标准库页面 */
.standards-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--color-gray-200);
  overflow-x: auto;
  scrollbar-width: none;
}

.standards-tabs::-webkit-scrollbar {
  display: none;
}

.standard-tab {
  padding: 16px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-600);
  border-bottom: 3px solid transparent;
  transition: all var(--t-base);
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.standard-tab:hover {
  color: var(--color-primary);
}

.standard-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.standard-content {
  display: none;
  animation: fadeInUp 0.5s ease-out;
}

.standard-content.active {
  display: block;
}

.standard-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 60px;
}

.standard-hero-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-lg);
}

.standard-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.standard-hero-content h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 20px;
}

.standard-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.standard-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-gray-600);
  padding: 6px 12px;
  background: var(--color-bg-soft);
  border-radius: var(--radius-full);
}

.standard-meta-item svg {
  color: var(--color-primary);
  width: 14px;
  height: 14px;
}

.standard-comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
  margin-bottom: 40px;
}

.standard-comparison-table th {
  background: linear-gradient(135deg, var(--color-forest) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
}

.standard-comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-gray-100);
  color: var(--color-gray-700);
  font-size: 0.9rem;
}

.standard-comparison-table tr:last-child td {
  border-bottom: none;
}

.standard-comparison-table tr:hover td {
  background: var(--color-bg-pale);
}

.standard-comparison-table tr.highlight td {
  background: var(--color-bg-soft);
  font-weight: 600;
}

/* 排放因子数据库 */
.factor-search {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
  margin-bottom: 40px;
  border: 1px solid var(--color-gray-100);
}

.search-input-wrap {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.search-input {
  flex: 1;
  height: 56px;
  padding: 0 20px 0 56px;
  background: var(--color-gray-50);
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: 1rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 18px center;
  transition: all var(--t-fast);
}

.search-input:focus {
  background-color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.search-tag {
  padding: 6px 14px;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  border: 1px solid var(--color-pale);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t-fast);
}

.search-tag:hover, .search-tag.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.factor-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  overflow-x: auto;
  scrollbar-width: none;
}

.factor-tabs::-webkit-scrollbar {
  display: none;
}

.factor-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-gray-700);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--t-base);
}

.factor-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.factor-tab.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.factor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.factor-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-sm);
  transition: all var(--t-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.factor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base);
}

.factor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-pale);
}

.factor-card:hover::before {
  transform: scaleX(1);
}

.factor-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}

.factor-card-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-bg-soft) 0%, var(--color-bg-pale) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.factor-card-confidence {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.confidence-high { background: rgba(16, 185, 129, 0.1); color: var(--color-emerald); }
.confidence-medium { background: rgba(245, 158, 11, 0.1); color: var(--color-amber); }
.confidence-low { background: rgba(251, 113, 133, 0.1); color: var(--color-coral); }

.factor-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--color-forest);
}

.factor-card-value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin: 12px 0 4px;
}

.factor-card-unit {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  margin-bottom: 16px;
}

.factor-card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--color-gray-100);
  font-size: 0.8rem;
  color: var(--color-gray-600);
}

.factor-card-meta-item {
  display: flex;
  justify-content: space-between;
}

.factor-card-meta-item strong {
  color: var(--color-gray-700);
}

/* 案例页 */
.case-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 20px;
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-gray-700);
  cursor: pointer;
  transition: all var(--t-base);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.case-grid-full {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card-full {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--t-base);
  border: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.case-card-full:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.case-card-image-full {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.case-card-image-full img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--t-base);
}

.case-card-full:hover .case-card-image-full img {
  transform: scale(1.08);
}

.case-card-image-full::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.7) 100%);
}

.case-card-tag-full {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  z-index: 2;
}

.case-card-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  color: white;
  z-index: 2;
}

.case-card-overlay h3 {
  color: white;
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.case-card-overlay p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.85rem;
}

.case-card-body-full {
  padding: 24px;
}

.case-card-stats-full {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-gray-100);
  text-align: center;
}

.case-card-stat-full {
  padding: 8px 4px;
}

.case-card-stat-value-full {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-primary);
  display: block;
  line-height: 1;
  margin-bottom: 4px;
}

.case-card-stat-label-full {
  font-size: 0.7rem;
  color: var(--color-gray-500);
}

/* 资讯页 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--t-base);
  border: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-pale);
}

.news-card-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--t-base);
}

.news-card:hover .news-card-image img {
  transform: scale(1.05);
}

.news-card-category {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  z-index: 2;
}

.news-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-date {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-forest);
  margin-bottom: 12px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--t-base);
}

.news-card:hover .news-card-title {
  color: var(--color-primary);
}

.news-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  flex: 1;
}

.news-card-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 侧边栏 */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}

.news-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-sm);
}

.sidebar-card h4 {
  color: var(--color-forest);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: 1.1rem;
}

.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sidebar-list-item {
  display: flex;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-gray-100);
  cursor: pointer;
  transition: all var(--t-base);
}

.sidebar-list-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.sidebar-list-item:hover {
  transform: translateX(4px);
}

.sidebar-list-image {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.sidebar-list-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-list-content h5 {
  font-size: 0.9rem;
  color: var(--color-forest);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sidebar-list-date {
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud-item {
  padding: 6px 12px;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t-fast);
  border: 1px solid var(--color-pale);
}

.tag-cloud-item:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 60px;
}

.pagination-item {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  color: var(--color-gray-700);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t-fast);
}

.pagination-item:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.pagination-item.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-emerald) 100%);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.pagination-arrow {
  padding: 0 12px;
  width: auto;
  gap: 6px;
}

/* 关于我们 */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.about-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-xl);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-floating-card {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--color-white);
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px solid var(--color-gray-100);
}

.about-floating-card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.about-floating-card-text strong {
  display: block;
  font-size: 1.4rem;
  color: var(--color-forest);
  font-family: var(--font-display);
  line-height: 1;
  margin-bottom: 4px;
}

.about-floating-card-text span {
  font-size: 0.85rem;
  color: var(--color-gray-600);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.value-card {
  padding: 32px 24px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
  text-align: center;
  transition: all var(--t-base);
  box-shadow: var(--shadow-sm);
}

.value-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-pale);
}

.value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--color-bg-soft) 0%, var(--color-bg-pale) 100%);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: all var(--t-base);
}

.value-card:hover .value-icon {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-emerald) 100%);
  color: var(--color-white);
  transform: scale(1.1);
}

.value-card h3 {
  color: var(--color-forest);
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.value-card p {
  color: var(--color-gray-600);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* 联系我们 */
.contact-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
}

.contact-form-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-100);
}

.contact-info-card {
  background: linear-gradient(135deg, var(--color-forest) 0%, var(--color-deep) 100%);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.contact-info-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
}

.contact-info-card h3 {
  color: var(--color-white);
  margin-bottom: 24px;
  position: relative;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-info-item-icon {
  width: 48px;
  height: 48px;
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bright);
  flex-shrink: 0;
}

.contact-info-item-content h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.contact-info-item-content p {
  color: var(--color-pale);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* FAQ */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  border: 1px solid var(--color-gray-100);
  overflow: hidden;
  transition: all var(--t-base);
}

.faq-item:hover {
  border-color: var(--color-pale);
  box-shadow: var(--shadow-sm);
}

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

.faq-question {
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-forest);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-display);
  transition: all var(--t-base);
}

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

.faq-question::before {
  content: 'Q';
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
  color: var(--color-white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  flex-shrink: 0;
}

.faq-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform var(--t-base);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

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

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 28px 24px 76px;
  color: var(--color-gray-700);
  line-height: 1.7;
}

/* 移动端适配 */
@media (max-width: 1024px) {
  .standard-hero,
  .about-intro,
  .contact-layout,
  .news-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

@media (max-width: 768px) {
  .page-banner {
    padding: 120px 0 60px;
  }

  .case-grid-full,
  .news-grid {
    grid-template-columns: 1fr;
  }

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

  .eval-form,
  .contact-form-card,
  .contact-info-card {
    padding: 24px 20px;
  }

  .contact-info-card {
    order: -1;
  }

  .about-floating-card {
    right: 12px;
    bottom: 12px;
    padding: 12px 16px;
  }

  .about-floating-card-text strong {
    font-size: 1.1rem;
  }
}