/* ============================================
   装修行业样板站 - 全局样式
   ============================================ */

/* CSS Variables */
:root {
  --primary: #C8956C;
  --primary-dark: #A87550;
  --primary-light: #E8C9A8;
  --secondary: #2C2C2C;
  --accent: #D4A574;
  --bg-light: #FAF7F4;
  --bg-white: #FFFFFF;
  --bg-dark: #1A1A1A;
  --text-primary: #2C2C2C;
  --text-secondary: #666666;
  --text-light: #999999;
  --text-white: #FFFFFF;
  --border: #E8E0D8;
  --shadow: 0 2px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text-primary);
  background: var(--bg-light);
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.header.scrolled {
  box-shadow: var(--shadow);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-dark);
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
}
.nav { display: flex; gap: 32px; }
.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  position: relative;
  padding: 4px 0;
}
.nav a:hover, .nav a.active {
  color: var(--primary-dark);
}
.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.btn-consult {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.btn-consult:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(200,149,108,0.4);
}
.phone-number {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ============================================
   Hero Banner Carousel
   ============================================ */
.banner {
  margin-top: 72px;
  height: 600px;
  background: linear-gradient(135deg, #2C2C2C 0%, #4A3728 100%);
  position: relative;
  overflow: hidden;
}
.banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23C8956C' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.banner-track {
  display: flex;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.645, 0.045, 0.355, 1);
}
.banner-slide {
  min-width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #2C2C2C 0%, #4A3728 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.banner-slide::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 520px 300px at 75% 50%, rgba(200,149,108,0.22) 0%, transparent 70%),
    radial-gradient(ellipse 400px 240px at 20% 60%, rgba(232,169,91,0.12) 0%, transparent 70%);
}
.banner-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  text-align: center;
  padding: 0 24px;
}
.banner-tag {
  display: inline-block;
  background: rgba(200,149,108,0.2);
  color: var(--primary-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
  border: 1px solid rgba(200,149,108,0.3);
}
.banner-title {
  font-size: 48px;
  font-weight: 800;
  color: white;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.banner-title span {
  color: var(--primary);
}
.banner-subtitle {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
  line-height: 1.8;
}
.banner-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,149,108,0.4);
}
.btn-outline {
  background: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}
/* Carousel indicators */
.banner-indicators {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}
.banner-dot {
  width: 24px;
  height: 3px;
  background: rgba(255,255,255,0.4);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s;
}
.banner-dot.active {
  width: 40px;
  background: var(--primary);
}
/* Carousel arrows */
.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}
.banner-arrow:hover {
  background: rgba(255,255,255,0.25);
}
.banner-arrow.prev { left: 24px; }
.banner-arrow.next { right: 24px; }

/* ============================================
   Section Common
   ============================================ */
.section {
  padding: 80px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  background: var(--bg-light);
  color: var(--primary-dark);
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 12px;
  border: 1px solid var(--border);
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Services
   ============================================ */
.services { background: var(--bg-white); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}
.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   Filter Tags (Cases Page)
   ============================================ */
.filter-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.filter-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  min-width: 36px;
}
.filter-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.filter-tag {
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-white);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-weight: 500;
}
.filter-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(200,149,108,0.04);
}
.filter-tag.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(200,149,108,0.25);
}

@media (max-width: 768px) {
  .filter-group {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
  .filter-tags {
    gap: 8px;
  }
  .filter-tag {
    padding: 5px 14px;
    font-size: 12px;
  }
}

/* ============================================
   Cases / Portfolio
   ============================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.case-image {
  height: 220px;
  background: linear-gradient(135deg, #E8D5C0, #D4A574);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  position: relative;
  overflow: hidden;
}
.case-image .case-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.case-card:hover .case-overlay {
  opacity: 1;
}
.case-overlay span {
  color: white;
  font-size: 14px;
  padding: 8px 20px;
  border: 1px solid white;
  border-radius: 20px;
}
.case-info {
  padding: 20px;
}
.case-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.case-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-light);
}
.case-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.case-tags {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.case-tag {
  background: var(--bg-light);
  color: var(--primary-dark);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
}

/* ============================================
   Process / Steps
   ============================================ */
.process { background: var(--bg-white); }
.process-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: var(--border);
}
.process-step {
  text-align: center;
  flex: 1;
  position: relative;
}
.step-number {
  width: 80px;
  height: 80px;
  margin: 0 auto 16px;
  background: var(--bg-light);
  border: 2px solid var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
  position: relative;
  z-index: 1;
}
.process-step h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}
.process-step p {
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 140px;
  margin: 0 auto;
}

/* ============================================
   News / Articles
   ============================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.news-image {
  height: 180px;
  background: linear-gradient(135deg, #E8D5C0, #C8956C);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}
.news-body {
  padding: 20px;
}
.news-date {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
}
.news-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-type {
  display: inline-block;
  background: var(--bg-light);
  color: var(--primary-dark);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  margin-top: 12px;
}

/* ============================================
   Stats / Numbers
   ============================================ */
.stats {
  background: linear-gradient(135deg, #2C2C2C, #4A3728);
  padding: 60px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item h3 {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}
.stat-item h3}
.stat-item h3 span {
  font-size: 20px;
  font-weight: 400;
}
.stat-item p {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}

/* ============================================
   Activities / Promotions
   ============================================ */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.activity-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.activity-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.activity-image {
  width: 200px;
  min-height: 160px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  flex-shrink: 0;
}
.activity-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.activity-badge {
  display: inline-block;
  background: #FFF0E5;
  color: #E67E22;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  width: fit-content;
}
.activity-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}
.activity-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.activity-time {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 8px;
}

/* ============================================
   Testimonials
   ============================================ */
.testimonials { background: var(--bg-white); }
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
}
.testimonial-stars {
  color: #F5A623;
  font-size: 14px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.testimonial-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  font-weight: 600;
}
.testimonial-name {
  font-size: 14px;
  font-weight: 600;
}
.testimonial-project {
  font-size: 12px;
  color: var(--text-light);
}

/* ============================================
   CTA / Contact
   ============================================ */
.cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 80px 0;
  text-align: center;
}
.cta h2 {
  font-size: 32px;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
}
.cta p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
}
.cta .btn-white {
  background: white;
  color: var(--primary-dark);
  border: none;
  padding: 14px 40px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.cta .btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-dark);
  padding: 60px 0 0;
  color: rgba(255,255,255,0.7);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 16px;
}
.footer h4 {
  color: white;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer ul li {
  margin-bottom: 10px;
}
.footer ul a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.footer ul a:hover {
  color: var(--primary);
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ============================================
   Short Videos
   ============================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.video-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.video-cover {
  position: relative;
  aspect-ratio: 9 / 12;
  overflow: hidden;
  cursor: pointer;
}
.video-cover-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  transition: transform 0.4s ease;
}
.video-card:hover .video-cover-bg {
  transform: scale(1.05);
}
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary-dark);
  z-index: 2;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.video-card:hover .video-play-btn {
  background: var(--primary);
  color: white;
  transform: translate(-50%, -50%) scale(1.1);
}
.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  z-index: 2;
}
.video-info {
  padding: 14px 16px;
}
.video-info h3 {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-light);
}

/* Video Page - Horizontal Layout */
.video-page-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
}
.video-player-area {
  background: var(--bg-dark);
  border-radius: var(--radius-lg);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.video-player-area .play-icon {
  width: 72px;
  height: 72px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--primary-dark);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.video-player-area .play-icon:hover {
  background: var(--primary);
  color: white;
  transform: scale(1.1);
}
.video-player-info {
  padding: 20px 0;
}
.video-player-info h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.video-player-meta {
  display: flex;
  gap: 20px;
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 16px;
}
.video-player-actions {
  display: flex;
  gap: 12px;
}
.video-action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: white;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}
.video-action-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.video-action-btn.liked {
  background: #FFF0F0;
  border-color: #FF4D4F;
  color: #FF4D4F;
}
.video-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.video-sidebar-item {
  display: flex;
  gap: 12px;
  padding: 10px;
  background: var(--bg-white);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.video-sidebar-item:hover {
  border-color: var(--primary-light);
  background: rgba(200,149,108,0.04);
}
.video-sidebar-item.active {
  border-color: var(--primary);
  background: rgba(200,149,108,0.06);
}
.video-sidebar-thumb {
  width: 120px;
  aspect-ratio: 9 / 12;
  border-radius: 6px;
  background: linear-gradient(135deg, #2C2C2C, #4A3728);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
  position: relative;
}
.video-sidebar-thumb .mini-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 28px;
  height: 28px;
  background: rgba(255,255,255,0.8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--text-primary);
}
.video-sidebar-thumb .mini-duration {
  position: absolute;
  bottom: 4px;
  right: 4px;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 10px;
}
.video-sidebar-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.video-sidebar-info h4 {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-sidebar-info .meta {
  font-size: 11px;
  color: var(--text-light);
}

/* Video Category Tabs */
.video-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.video-tab {
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-white);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.video-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.video-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .video-page-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .video-sidebar-thumb { width: 90px; }
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
  user-select: none;
}
.page-arrow {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background: var(--bg-white);
  color: var(--text-secondary);
  transition: var(--transition);
}
.page-arrow:hover:not(.disabled) {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(200,149,108,0.04);
}
.page-arrow.disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.page-num {
  min-width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background: var(--bg-white);
  color: var(--text-secondary);
  transition: var(--transition);
}
.page-num:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(200,149,108,0.04);
}
.page-num.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(200,149,108,0.3);
  font-weight: 600;
}
.page-ellipsis {
  min-width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-light);
  letter-spacing: 2px;
}
.page-total {
  font-size: 13px;
  color: var(--text-light);
  margin-left: 12px;
}

@media (max-width: 768px) {
  .pagination { gap: 4px; }
  .page-arrow { padding: 6px 10px; font-size: 13px; }
  .page-num { min-width: 34px; height: 34px; font-size: 13px; }
  .page-total { display: none; }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .banner { height: 480px; }
  .banner-title { font-size: 38px; }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-white);
    padding: 6px 0 12px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
  }
  .nav.open { display: flex; }
  .nav a {
    padding: 14px 24px;
    border-bottom: 1px solid var(--border);
  }
  .nav a:last-child { border-bottom: none; }
  .nav a.active { color: var(--primary-dark); font-weight: 600; }
  .nav a.active::after { display: none; }
  .menu-toggle { display: flex; }
  .phone-number { display: none; }
  .banner { height: 520px; }
  .banner-title { font-size: 30px; }
  .banner-subtitle { font-size: 15px; }
  .banner-btns { flex-direction: column; align-items: center; }
  .banner-arrow { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .process-steps { flex-direction: column; gap: 24px; }
  .process-steps::before { display: none; }
  .activity-grid { grid-template-columns: 1fr; }
  .activity-card { flex-direction: column; }
  .activity-image { width: 100%; min-height: 140px; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
}

/* ============================================
   FAQ（常见问题）
   ============================================ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--primary-dark);
  flex-shrink: 0;
  margin-left: 12px;
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item summary:hover {
  background: var(--bg-light);
}
.faq-item p {
  padding: 0 22px 18px;
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-secondary);
  border-top: 1px dashed var(--border);
  padding-top: 14px;
}
@media (max-width: 768px) {
  .faq-item summary { font-size: 15px; padding: 15px 18px; }
  .faq-item p { padding: 12px 18px 16px; font-size: 13px; }
}