/* ============================================
   首页样式 - 高端企业官网风格
   ============================================ */

/* ===== 幻灯片样式（保留原有） ===== */
.hero-slider {
  position:relative; width:100%; min-height:100vh;
  overflow:hidden; background:transparent;
}
.hero-slides-wrapper {
  position:relative; width:100%; height:100%; min-height:100vh;
}
.hero-slide {
  position:absolute; inset:0; width:100%; height:100%; min-height:100vh;
  display:flex; flex-direction:column; justify-content:center;
  padding-top:80px; padding-bottom:40px;
  opacity:0; visibility:hidden;
  transition:opacity .8s ease, visibility .8s ease;
  z-index:1;
}
.hero-slide.active {
  opacity:1; visibility:visible; z-index:2;
}
.hero-slide-bg {
  position:absolute; inset:0;
  background-color:#0d1117;
  background-size:cover; background-position:center; background-repeat:no-repeat;
  z-index:0;
}
.hero-overlay {
  position:absolute; inset:0;
  background:rgba(0,0,0,.45);
  z-index:1;
}
.hero-container {
  position:relative; z-index:2;
  width:75%; max-width:1600px; margin:0 auto;
  padding:20px 10px;
  display:flex;
  flex-direction:row;
  align-items:center;
  justify-content:space-between;
}
.hero-container--center { justify-content:center; text-align:center; }
.hero-text {
  flex:1 0 40%; min-width:0;
  padding-left:30px;
  display:flex; flex-direction:column; align-items:flex-start;
}
.hero-container--center .hero-text { align-items:center; }
@media(max-width:768px) {
  #heroSlider { display:none; }
  .hero-slider-mobile { display:block; }
}
/* 高缩放/窄视口时：缩短幻灯片、标题允许换行、缩小顶部间距 */
@media (max-width: 1100px) {
  .hero-slider,
  .hero-slides-wrapper,
  .hero-slide {
    min-height: 80vh;
  }
  .hero-slide {
    padding-top: 60px;
    padding-bottom: 30px;
  }
  .hero-title {
    white-space: normal;
  }
}
.hero-badge {
  display:inline-block;
  padding:6px 18px; margin-bottom:24px;
  font-size:.8rem; font-weight:600;
  color:rgba(255,255,255,.9); background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.15);
  border-radius:50px; letter-spacing:.5px;
  backdrop-filter:blur(4px);
}
.hero-title {
  font-size:clamp(1.1rem, 3vw, 2.8rem);
  font-weight:900; line-height:1.2;
  margin-bottom:0;
  color:#fff;
  width:100%;
  max-width:none;
  white-space:normal;
  letter-spacing:3px;
  position:relative;
}
.hero-title em { font-style:normal; color:var(--accent); }
.hero-subtitle {
  font-size:clamp(0.9rem, 1.6vw, 1.25rem);
  color:#fff; font-weight:700; line-height:1.8;
  margin:25px 0 40px;
  letter-spacing:2px;
  text-align:left;
}
.hero-container--center .hero-subtitle { text-align:center; }
.hero-actions { display:flex; gap:16px; justify-content:flex-start; flex-wrap:wrap; color:#fff; }

/* 幻灯片按钮 - 主按钮绿色白字，次要按钮白色绿字 */
.hero-actions .btn-primary {
  background:#85ce03; color:#fff; border-color:#85ce03;
  box-shadow:0 4px 14px rgba(133,206,3,.39);
}
.hero-actions .btn-primary:hover {
  background:#6ba802; border-color:#6ba802;
  box-shadow:0 6px 20px rgba(133,206,3,.5);
  transform:translateY(-2px);
}
.hero-actions .btn-outline {
  background:rgba(255,255,255,.92); color:#85ce03;
  border-color:rgba(255,255,255,.92);
}
.hero-actions .btn-outline:hover {
  background:#fff; color:#6ba802;
  border-color:#fff;
}

.hero-slide:not(.active) [data-anim] {
  opacity:0; transform:translateY(0);
}
.hero-slide.active [data-anim] {
  opacity:0;
}
.hero-slide.active [data-anim=fadeInDown] {
  animation:heroFadeDown .7s ease .2s both;
}
.hero-slide.active [data-anim=fadeInUp] {
  animation:heroFadeUp .7s ease .3s both;
}
.hero-slide.active [data-anim=fadeInSub] {
  animation:heroFadeUp .7s ease .6s both;
}
.hero-slide.active [data-anim=fadeInBtns] {
  animation:heroFadeUp .7s ease 2.2s both;
}
.hero-slide.active [data-anim=fadeInCards] {
  animation:heroFadeUp .7s ease 1.1s both;
}

@keyframes heroFadeUp {
  from { opacity:0; transform:translateY(40px); }
  to { opacity:1; transform:translateY(0); }
}
@keyframes heroFadeDown {
  from { opacity:0; transform:translateY(-20px); }
  to { opacity:1; transform:translateY(0); }
}

.hero-dots {
  position:absolute; bottom:40px; left:50%; transform:translateX(-50%);
  display:flex; gap:12px; z-index:10;
}
.hero-dot {
  width:12px; height:12px; border-radius:50%;
  background:rgba(255,255,255,.3); cursor:pointer;
  transition:all .3s ease; border:2px solid transparent;
}
.hero-dot.active {
  background:var(--primary);
  border-color:#fff;
  transform:scale(1.2);
}
.hero-dot:hover { background:rgba(255,255,255,.6); }

.hero-arrow {
  position:absolute; top:50%; transform:translateY(-50%);
  z-index:10; width:50px; height:50px; border-radius:50%;
  background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.15);
  color:#fff; font-size:2rem; line-height:1; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:all .3s ease; user-select:none;
}
.hero-arrow:hover { background:rgba(255,255,255,.25); transform:translateY(-50%) scale(1.1); }
.hero-arrow-prev { left:20px; }
.hero-arrow-next { right:20px; }
@media(max-width:768px) {
  .hero-arrow { width:36px; height:36px; font-size:1.4rem; }
  .hero-arrow-prev { left:8px; }
  .hero-arrow-next { right:8px; }
  .hero-dots { bottom:20px; }
}

/* ===== 向下滚动引导指示器 ===== */
.hero-scroll-indicator {
  position:absolute;
  bottom:100px;
  left:50%;
  transform:translateX(-50%);
  z-index:10;
  cursor:pointer;
  animation:scrollBounce 2s ease-in-out infinite;
}
.scroll-mouse {
  width:24px; height:38px;
  border:2px solid rgba(255,255,255,.7);
  border-radius:13px;
  position:relative;
  margin:0 auto;
}
.scroll-wheel {
  width:4px; height:9px;
  background:rgba(255,255,255,.8);
  border-radius:3px;
  position:absolute;
  top:8px; left:50%;
  transform:translateX(-50%);
  animation:scrollWheel 1.5s ease-in-out infinite;
}
@keyframes scrollWheel {
  0% { opacity:1; transform:translateX(-50%) translateY(0); }
  100% { opacity:0; transform:translateX(-50%) translateY(14px); }
}
@keyframes scrollBounce {
  0%, 100% { transform:translateX(-50%) translateY(0); }
  50% { transform:translateX(-50%) translateY(8px); }
}

@media (prefers-reduced-motion:reduce) {
  .hero-slide, .hero-slide *,
  .hero-scroll-indicator,
  .scroll-mouse, .scroll-wheel { animation:none!important; transition:none!important; }
  .hero-scroll-indicator { display:none; }
}

/* ===== 幻灯片左侧产品图 ===== */
.hero-products {
  flex:0 0 60%;
  padding-right:30px;
}
.hero-product-card {
  display:block;
  width:100%;
  border-radius:12px;
  overflow:hidden;
  text-decoration:none;
  transition:all .3s ease;
}
.hero-product-card:hover {
  transform:translateY(-4px);
}
.hero-product-card img {
  width:100%;
  height:auto;
  display:block;
}
.hero-product-card svg {
  width:40px; height:40px;
  opacity:.5; color:#fff;
}
@media(max-width:1200px) {
  .hero-products { padding-right:18px; }
  .hero-text { padding-left:18px; }
}
@media(max-width:768px) {
  .hero-products { display:none; }
}

/* ===== CSS变量定义 ===== */
:root {
  --primary: #85ce03;
  --primary-dark: #6ba802;
  --primary-light: #9de035;
  --secondary: #4A5456;
  --accent: #2563eb;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --bg-primary: #ffffff;
  --bg-secondary: #F5F9F8;
  --bg-tertiary: #EDF3F1;
  --border: #D5E0DC;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 基础布局 ===== */
.container {
  width: 75%;
  max-width: 1920px;
  margin: 0 auto;
  padding: 0 10px;
}

@media(max-width:768px) {
  .container { width:100%; padding:0 15px; }
}

/* ===== 通用区块样式 ===== */
.home-section {
  padding: 100px 0;
  position: relative;
}

@media (max-width: 768px) {
  .home-section {
    padding: 60px 0;
  }
}

/* 区块标题通用样式 */
.section-header {
  text-align: center;
  margin-bottom: 64px;
  width: 100%;
}

.section-title {
  font-size: clamp(1.25rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.section-title .title-highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: clamp(0.875rem, 1.5vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.7;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .section-title,
  .section-subtitle,
  .service-title {
    white-space: normal;
  }
}

/* ===== 按钮样式 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(133, 206, 3, 0.39);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(133, 206, 3, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.125rem;
}

/* ===== 模块1：四大核心优势 ===== */
.section-services {
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

/* 水雾流线暗纹背景 */
.section-services::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    radial-gradient(ellipse 600px 300px at 10% 20%, rgba(133,206,3,.04) 0%, transparent 60%),
    radial-gradient(ellipse 500px 250px at 80% 30%, rgba(133,206,3,.03) 0%, transparent 60%),
    radial-gradient(ellipse 400px 200px at 40% 70%, rgba(133,206,3,.025) 0%, transparent 60%),
    radial-gradient(ellipse 350px 180px at 90% 80%, rgba(133,206,3,.02) 0%, transparent 60%);
  pointer-events: none;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 40px;
  align-items: stretch;
}

@media (max-width: 1200px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

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

.service-card {
  background: #fff;
  border: 1px solid rgba(213,224,220,.5);
  border-radius: 12px;
  padding: 40px 28px;
  text-align: center;
  transition: all .4s cubic-bezier(.4,0,.2,1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
}

.service-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(133,206,3,.08) 50%, rgba(133,206,3,.15) 100%);
  transition: height .4s cubic-bezier(.4,0,.2,1);
  border-radius: 0 0 12px 12px;
  pointer-events: none;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0,0,0,.08), 0 4px 12px rgba(133,206,3,.08);
  border-color: rgba(133,206,3,.15);
}

.service-card:hover::after {
  height: 80px;
}

/* 默认选中状态（与 hover 一致） */
.service-card.active {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0,0,0,.08), 0 4px 12px rgba(133,206,3,.08);
  border-color: rgba(133,206,3,.15);
}

.service-card.active::after {
  height: 80px;
}

.service-icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-icon svg {
  width: 46px;
  height: 46px;
  transition: transform .4s ease;
}

.service-card:hover .service-icon svg {
  transform: scale(1.1);
}

.service-title {
  font-size: clamp(0.875rem, 1.2vw, 1.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  white-space: nowrap;
}

.service-desc {
  font-size: clamp(0.75rem, 1vw, 0.9375rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}

.service-tags {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  justify-content: center;
  margin-top: auto;
}

.tag {
  display: inline-block;
  padding: 3px 8px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: clamp(0.625rem, 0.9vw, 0.8125rem);
  border-radius: 20px;
  transition: var(--transition);
  white-space: nowrap;
}

.service-card:hover .tag {
  background: rgba(133, 206, 3, 0.1);
  color: var(--primary);
}

/* ===== 模块2：核心产品区块 ===== */
.section-cat-products {
  position: relative;
  padding: 80px 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  transition: background-image .6s ease;
}

/* 绿色遮罩层 */
.cat-prod-bg-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(30, 123, 60, 0.75);
  pointer-events: none;
}

.section-cat-products .container {
  position: relative;
  z-index: 2;
  width: 75%;
  max-width: 1920px;
}

/* 标题白色（背景暗色时） */
.section-cat-products .section-title {
  color: #fff;
}
.section-cat-products .section-title .title-highlight {
  background: linear-gradient(135deg, #85ce03 0%, #a8e84a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-cat-products .section-subtitle {
  color: rgba(255,255,255,.75);
}

/* ===== 主体容器：选项卡 + 内容区 ===== */
.cat-prod-body {
  display: flex;
  gap: 40px;
  width: 100%;
  margin: 0 auto;
  align-items: stretch;
}

/* ===== 左侧选项卡列（单列） ===== */
.cat-prod-tabs {
  width: 16.666%;
  flex: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cat-prod-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,.7);
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  cursor: pointer;
  transition: all .3s ease;
  user-select: none;
  line-height: 1.3;
}

.cat-prod-tab:hover {
  color: #fff;
  background: rgba(255,255,255,.15);
  border-color: rgba(255,255,255,.25);
}

.cat-prod-tab.active {
  color: #85ce03;
  background: rgba(133,206,3,.15);
  border-color: rgba(133,206,3,.35);
  box-shadow: 0 0 12px rgba(133,206,3,.15);
}

.cat-prod-tab-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(255,255,255,.08);
  color: inherit;
}

.cat-prod-tab.active .cat-prod-tab-icon {
  background: rgba(133,206,3,.2);
  color: #85ce03;
}

.cat-prod-tab-icon svg {
  width: 14px;
  height: 14px;
}

/* 选项卡文字溢出省略 — 配合 flex 容器 min-width:0 确保收缩 */
.cat-prod-tab-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: clamp(0.6rem, 1vw, 1rem);
  min-width: 0;
}

/* ===== 右侧内容区（占2/3）：左图右文 ===== */
.cat-prod-panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 14px;
  overflow: hidden;
  backdrop-filter: blur(8px);
}

.cat-prod-panel-top {
  display: flex;
  padding: 32px 32px 0;
}

.cat-prod-panel-img {
  flex: 0 0 33.333%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform .5s ease;
}

.cat-prod-panel:hover .cat-prod-panel-img {
  transform: scale(1.05);
}

.cat-prod-panel-text {
  flex: 1;
  padding: 28px 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.cat-prod-panel-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.3;
}

.cat-prod-panel-desc {
  font-size: 1rem;
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cat-prod-panel-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  margin-top: 15px;
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #85ce03;
  background: rgba(133,206,3,.12);
  border: 1px solid rgba(133,206,3,.35);
  border-radius: 8px;
  text-decoration: none;
  transition: all .3s ease;
}

.cat-prod-panel-btn:hover {
  background: #85ce03;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(133,206,3,.35);
}

.cat-prod-panel-btn svg {
  width: 16px;
  height: 16px;
  transition: transform .3s ease;
}

.cat-prod-panel-btn:hover svg {
  transform: translateX(4px);
}

/* ===== 产品列表（面板底部） ===== */
.cat-prod-panel-items {
  display: flex;
  gap: 12px;
  padding: 20px 32px 28px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.08);
}

.cat-prod-item {
  flex: 0 0 calc(33.333% - 8px);
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.15);
  transition: all .3s ease;
  text-decoration: none;
  position: relative;
}

.cat-prod-item:hover {
  border-color: #85ce03;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,.25);
}

.cat-prod-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.cat-prod-item:hover img {
  transform: scale(1.08);
}

/* 产品名称遮罩（绿色渐变） */
.cat-prod-item-name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px 10px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
  text-align: center;
  background: linear-gradient(transparent, rgba(30, 123, 60, 0.85));
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
}

/* ===== 响应式（高缩放/小屏时切为列布局） ===== */
@media (max-width: 1300px) {
  .cat-prod-body {
    width: 100%;
    flex-direction: column;
    gap: 24px;
  }
  .cat-prod-tabs {
    flex: none;
    width: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }
  .cat-prod-tab {
    padding: 10px 16px;
    font-size: 0.85rem;
  }
  .cat-prod-tab:hover,
  .cat-prod-tab.active {
    transform: none;
  }
  .cat-prod-panel {
    flex: none;
    width: 100%;
    flex-direction: column;
  }
  .cat-prod-panel-top {
    padding: 20px 20px 0;
  }
  .cat-prod-panel-img {
    flex: 0 0 33.333%;
  }
  .cat-prod-panel-text {
    padding: 20px 20px 20px;
  }
  .cat-prod-panel-items {
    padding: 16px 20px 24px;
  }
  .cat-prod-panel-title {
    font-size: 1.25rem;
  }
}

@media (max-width: 768px) {
  .cat-prod-body {
    width: 100%;
  }
  .cat-prod-tabs {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }
  .cat-prod-tab {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }
  .cat-prod-panel-top {
    flex-direction: column;
  }
  .cat-prod-panel-img {
    flex: none;
    width: 100%;
    aspect-ratio: 16 / 9;
  }
  .cat-prod-panel-text {
    padding: 18px 16px 18px;
  }
  .cat-prod-panel-title {
    font-size: 1.125rem;
  }
  .cat-prod-panel-desc {
    font-size: 0.875rem;
  }
  .cat-prod-panel-btn {
    margin-top: 12px;
    padding: 8px 20px;
    font-size: 0.8125rem;
  }
  .section-cat-products {
    background-attachment: scroll;
  }
}

/* ===== 模块3：雾化环保技术科普干货（重新设计） ===== */
.section-articles {
  background: linear-gradient(180deg, #f7f9fc 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}
.section-articles::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(133,206,3,0.04) 0%, transparent 70%);
  pointer-events: none;
}

/* ===== 左右两栏容器 ===== */
.knowledge-wrap {
  display: flex;
  gap: 40px;
  align-items: stretch;
}

/* ===== 左侧精选 ===== */
.knowledge-featured {
  flex: 0 0 42%;
  max-width: 42%;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  transition: box-shadow 0.4s ease, transform 0.4s ease;
}
.knowledge-featured:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.knowledge-featured-link {
  display: block;
  text-decoration: none;
  color: inherit;
  height: 100%;
}
.knowledge-featured-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e8ecf1;
}
.knowledge-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25,0.46,0.45,0.94);
}
.knowledge-featured:hover .knowledge-featured-img img {
  transform: scale(1.06);
}
/* 分类标签浮层 */
.knowledge-featured-cat {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: rgba(133,206,3,0.88);
  border-radius: 20px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  letter-spacing: 0.04em;
}

/* 精选正文 */
.knowledge-featured-body {
  padding: 28px 30px 32px;
  display: flex;
  flex-direction: column;
}
.knowledge-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 14px;
}
.knowledge-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8rem;
  color: #94a3b8;
}
.knowledge-meta-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.6;
}
.knowledge-featured-title {
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  font-weight: 700;
  color: #1a202c;
  line-height: 1.45;
  margin: 0 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.knowledge-featured-summary {
  font-size: 1rem;
  color: #555555;
  line-height: 1.75;
  margin: 0 0 20px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.knowledge-featured-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #85ce03 0%, #6ba802 100%);
  border-radius: 8px;
  transition: all 0.35s ease;
  box-shadow: 0 4px 14px rgba(133,206,3,0.3);
}
.knowledge-featured-btn svg {
  width: 15px;
  height: 15px;
  transition: transform 0.3s ease;
}
.knowledge-featured:hover .knowledge-featured-btn {
  box-shadow: 0 6px 24px rgba(133,206,3,0.4);
  transform: translateY(-2px);
}
.knowledge-featured:hover .knowledge-featured-btn svg {
  transform: translateX(4px);
}

/* ===== 右侧文章列表 ===== */
.knowledge-list {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.knowledge-list-item {
  display: block;
  text-decoration: none;
  color: inherit;
  background: #fff;
  border: 1px solid rgba(0,0,0,0.05);
  border-radius: 14px;
  padding: 22px 24px;
  transition: all 0.35s ease;
  box-shadow: 0 2px 10px rgba(0,0,0,0.03);
}
.knowledge-list-item:hover {
  border-color: rgba(133,206,3,0.2);
  box-shadow: 0 6px 24px rgba(0,0,0,0.06);
  transform: translateX(6px);
}
.knowledge-list-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.knowledge-list-cat {
  font-size: 0.72rem;
  font-weight: 600;
  color: #85ce03;
  background: rgba(133,206,3,0.08);
  padding: 3px 10px;
  border-radius: 4px;
  letter-spacing: 0.03em;
}
.knowledge-list-date {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: #94a3b8;
}
.knowledge-list-date svg {
  width: 12px;
  height: 12px;
  opacity: 0.5;
}
.knowledge-list-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: #1a202c;
  line-height: 1.5;
  margin: 0 0 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.knowledge-list-item:hover .knowledge-list-title {
  color: #85ce03;
}
/* 列表摘要 */
.knowledge-list-summary {
  font-size: 0.8rem;
  color: #555555;
  line-height: 1.6;
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* 标签行 */
.knowledge-list-tags {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.knowledge-list-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  color: #64748b;
  background: #f1f5f9;
  padding: 3px 10px;
  border-radius: 4px;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
  transition: all 0.25s ease;
}
.knowledge-list-tag:hover {
  color: #fff;
  background: #85ce03;
}
/* 底部：阅读量 + 了解详情 */
.knowledge-list-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid rgba(0,0,0,0.05);
}
.knowledge-list-views {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: #94a3b8;
}
.knowledge-list-views svg {
  width: 13px;
  height: 13px;
  opacity: 0.5;
}
.knowledge-list-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #85ce03;
  transition: all 0.3s ease;
}
.knowledge-list-link svg {
  width: 13px;
  height: 13px;
  transition: transform 0.3s ease;
}
.knowledge-list-item:hover .knowledge-list-link svg {
  transform: translateX(4px);
}

/* ===== 底部查看更多按钮 ===== */
.knowledge-more-wrap {
  text-align: center;
  margin-top: 44px;
}
.knowledge-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  color: #1a202c;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 50px;
  background: #fff;
  transition: all 0.35s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.knowledge-more-btn svg {
  width: 15px;
  height: 15px;
  transition: transform 0.35s ease;
}
.knowledge-more-btn:hover {
  background: #85ce03;
  border-color: #85ce03;
  color: #fff;
  box-shadow: 0 8px 32px rgba(133,206,3,0.25);
  transform: translateY(-2px);
}
.knowledge-more-btn:hover svg {
  transform: translateX(4px);
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .knowledge-wrap {
    flex-direction: column;
    gap: 30px;
  }
  .knowledge-featured {
    flex: none;
    max-width: 100%;
  }
  .knowledge-featured-img {
    aspect-ratio: 16 / 8;
  }
}
@media (max-width: 768px) {
  .knowledge-featured-body {
    padding: 20px 20px 24px;
  }
  .knowledge-featured-title {
    font-size: 1.1rem;
  }
  .knowledge-list-item {
    padding: 18px 18px;
  }
  .knowledge-list-title {
    font-size: 0.88rem;
  }
}

/* ===== 模块3：FAQ常见问题 ===== */
.section-faq {
  background: var(--bg-secondary);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 768px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

.faq-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}

.faq-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  transform: translateY(-4px);
}

.faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.faq-q-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.faq-q h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin: 0;
  padding-top: 2px;
}

.faq-a {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.faq-a-icon {
  width: 28px;
  height: 28px;
  background: var(--bg-tertiary);
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}

.faq-a p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
  padding-top: 2px;
}

/* ===== 模块5：服务版图 ===== */
.section-sitemap {
  background: var(--bg-primary);
  padding-bottom: 60px;
}

.sitemap-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 20px;
}

.sitemap-link {
  display: inline-block;
  padding: 10px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 30px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: var(--transition);
}

.sitemap-link:hover {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

@media(max-width:768px) {
  .sitemap-cloud {
    gap: 8px;
    padding: 10px 0;
  }
  .sitemap-link {
    flex: 0 0 calc(20% - 8px);
    height: 30px;
    padding: 0 4px;
    font-size: 0.72rem;
    line-height: 30px;
    text-align: center;
    box-sizing: border-box;
    border-radius: 6px;
  }
}

/* ===== 模块5：CTA区域 ===== */
.section-cta {
  background: linear-gradient(135deg, #1e3a5f 0%, #0f2440 100%);
  padding: 80px 0;
}

.cta-box {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-actions .btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}

.cta-actions .btn-outline:hover {
  background: #fff;
  color: #6ba802;
  border-color: #fff;
}

/* ===== 动画效果 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: scale(0.5);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 滚动显示动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式调整 ===== */
@media (max-width: 768px) {
  .section-header {
    margin-bottom: 40px;
  }

  .service-card {
    display: grid;
    grid-template-columns: 56px 1fr;
    grid-template-rows: auto auto auto;
    gap: 6px 16px;
    text-align: left;
    padding: 20px 16px;
    align-items: start;
  }
  .service-icon {
    width: 64px;
    height: 64px;
    margin: 0;
    grid-row: 1 / 4;
    grid-column: 1;
    align-self: start;
  }
  .service-icon svg {
    width: 34px;
    height: 34px;
  }
  .service-title {
    grid-row: 1;
    grid-column: 2;
    font-size: 1.05rem;
    white-space: normal;
    margin-bottom: 0;
  }
  .service-desc {
    grid-row: 2;
    grid-column: 2;
    font-size: 0.85rem;
    margin-bottom: 0;
  }
  .service-tags {
    grid-row: 3;
    grid-column: 2;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  
  .btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
  }

}

/* ===== 行业定制解决方案板块（高端非传统布局） ===== */
.section-solution {
  position: relative;
  background: #fff;
  overflow: hidden;
  padding: 100px 0 110px;
}
.section-solution::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.section-solution::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16,185,129,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.solution-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.018) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.solution-ornament {
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.25), transparent);
}
.solution-ornament::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 10px;
  background: rgba(59,130,246,0.3);
  border-radius: 50%;
}
.section-solution .section-header {
  position: relative;
  z-index: 2;
  margin-bottom: 60px;
}
.section-solution .section-title {
  color: #1a202c;
  font-size: clamp(1.6rem, 2.8vw, 2.6rem);
}
.section-solution .section-subtitle {
  color: #718096;
  font-size: clamp(0.9rem, 1.1vw, 1.1rem);
  max-width: 640px;
  margin: 12px auto 0;
}
.section-solution .title-highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 非对称网格布局 */
.solution-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

/* 宽卡片：跨越2列 */
.solution-card--wide {
  grid-column: span 2;
}

/* 卡片基础样式 */
.solution-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  min-height: 280px;
  cursor: pointer;
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: box-shadow 0.4s ease, min-height 0.3s ease;
}
.solution-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.solution-card--wide {
  min-height: 280px;
}
.solution-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: inherit;
  overflow: hidden;
}
/* 背景图 - 使用div背景方式确保等比例裁剪填充 */
.solution-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
/* 图片不存在时显示渐变色占位 */
.solution-card-bg:not([style*="background-image"]) {
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}
/* 叠加渐变层 — 仅文字区域深色遮罩，提升白色文字可读性 */
.solution-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    transparent 50%,
    rgba(0,0,0,0.25) 70%,
    rgba(0,0,0,0.6) 100%
  );
  transition: background 0.4s ease;
}
/* 内容层 */
.solution-card-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px 26px;
  z-index: 3;
}
/* 编号标签 */
.solution-card-tag {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  padding: 4px 14px;
  font-family: 'Georgia', serif;
}
/* 标题 */
.solution-card-title {
  color: #fff;
  font-size: clamp(1rem, 1.3vw, 1.25rem);
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.35;
  letter-spacing: 0.02em;
}
/* 摘要 */
.solution-card-summary {
  color: rgba(255,255,255,0.8);
  font-size: clamp(0.78rem, 0.9vw, 0.88rem);
  line-height: 1.6;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* 详情链接 */
.solution-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 20px;
  padding: 5px 16px;
  width: fit-content;
  letter-spacing: 0.02em;
}
.solution-card-link svg {
  transition: transform 0.3s ease;
  width: 14px;
  height: 14px;
}

/* 悬停效果 */
.solution-card:hover .solution-card-bg {
  transform: scale(1.08);
}
.solution-card:hover .solution-card-overlay {
  background: linear-gradient(
    180deg,
    transparent 0%,
    transparent 45%,
    rgba(0,0,0,0.3) 65%,
    rgba(0,0,0,0.7) 100%
  );
}
.solution-card:hover .solution-card-link {
  color: #fff;
  background: rgba(133,206,3,0.85);
  border-bottom-color: transparent;
}
.solution-card:hover .solution-card-link svg {
  transform: translateX(4px);
}
.solution-card:hover .solution-card-tag {
  color: rgba(255,255,255,0.85);
  background: rgba(59,130,246,0.25);
  border-color: rgba(59,130,246,0.35);
}

/* 响应式 */
@media (max-width: 1100px) {
  .solution-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 0 15px;
  }
  .solution-card--wide {
    grid-column: span 2;
  }
  .solution-card {
    min-height: 260px;
  }
}
@media (max-width: 768px) {
  .section-solution {
    padding: 60px 0 70px;
  }
  .solution-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .solution-card--wide {
    grid-column: span 1;
  }
  .solution-card {
    min-height: 220px;
  }
  .solution-card-content {
    padding: 20px 18px;
  }
  .solution-card-tag {
    top: 12px;
    right: 12px;
    font-size: 0.7rem;
    padding: 3px 10px;
  }
}

/* ===== 合作单位模块 ===== */
.section-partners {
  position: relative;
  background: #f8fafb;
  padding: 80px 0;
  overflow: hidden;
}
.section-partners .section-title {
  color: #1a202c;
}
.section-partners .section-subtitle {
  color: #718096;
}
/* 滚动轨道容器 — 隐藏溢出部分 */
.partners-track-wrapper {
  width: 100%;
  overflow: hidden;
  position: relative;
  padding: 20px 0;
}
/* 渐变遮罩：左右边缘淡出 */
.partners-track-wrapper::before,
.partners-track-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}
.partners-track-wrapper::before {
  left: 0;
  background: linear-gradient(90deg, #f8fafb 0%, transparent 100%);
}
.partners-track-wrapper::after {
  right: 0;
  background: linear-gradient(270deg, #f8fafb 0%, transparent 100%);
}
/* 滚动条 — flex 行，由 JS 控制 translateX */
.partners-track {
  display: flex;
  align-items: center;
  gap: 48px;
  width: max-content;
  will-change: transform;
}
/* 单个 LOGO 容器 */
.partner-logo {
  flex: 0 0 auto;
  width: 160px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
}
.partner-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.55;
  transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  -webkit-filter: grayscale(100%);
}
/* hover 恢复彩色 */
.partner-logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
  -webkit-filter: grayscale(0%);
}
/* 移动端响应式 */
@media (max-width: 768px) {
  .section-partners {
    padding: 50px 0;
  }
  .partners-track {
    gap: 32px;
  }
  .partner-logo {
    width: 120px;
    height: 60px;
  }
  .partners-track-wrapper::before,
  .partners-track-wrapper::after {
    width: 40px;
  }
}

/* ===== 打印样式 ===== */
@media print {
  .home-section {
    padding: 40px 0;
    page-break-inside: avoid;
  }
  
  .service-card {
    break-inside: avoid;
  }
}

/* ===== 工程案例板块 ===== */
.section-cases {
  position: relative;
  background: #f5f7fa;
  overflow: hidden;
  padding: 90px 0 100px;
}
.section-cases::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(133,206,3,0.2), transparent);
}
.section-cases .section-header {
  position: relative;
  z-index: 2;
  margin-bottom: 50px;
}
.section-cases .section-title {
  color: #1a202c;
  font-size: clamp(1.6rem, 2.8vw, 2.6rem);
}
.section-cases .section-subtitle {
  color: #718096;
  font-size: clamp(0.9rem, 1.1vw, 1.1rem);
  max-width: 640px;
  margin: 12px auto 0;
}
.section-cases .title-highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 案例网格：3列 */
.cases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  position: relative;
  z-index: 2;
}

/* 卡片 */
.case-card {
  position: relative;
  display: block;
  text-decoration: none;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.25,0.46,0.45,0.94), box-shadow 0.4s ease;
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.08), 0 0 0 1px rgba(133,206,3,0.15);
  border-color: rgba(133,206,3,0.2);
}

/* 顶部绿色装饰条 */
.case-card-topbar {
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0;
  transition: width 0.5s cubic-bezier(0.25,0.46,0.45,0.94);
}
.case-card:hover .case-card-topbar {
  width: 100%;
}

/* 卡片内部 */
.case-card-inner {
  display: flex;
  flex-direction: column;
}

/* 图片区域 */
.case-card-img {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}
.case-card-img:not([style*="background-image"]) {
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}
.case-card-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.15) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.case-card:hover .case-card-img-overlay {
  opacity: 1;
}

/* 编号 */
.case-card-number {
  position: absolute;
  top: 12px;
  left: 14px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.6);
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 3px 10px;
  font-family: 'Georgia', serif;
}

/* 项目属地标签 */
.case-card-location {
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 3;
  display: inline-block;
  padding: 4px 12px;
  font-size: .85rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  border-radius: 6px;
  letter-spacing: .5px;
  box-shadow: 0 2px 10px rgba(16,185,129,.35);
  pointer-events: none;
}

/* 悬停查看按钮 */
.case-card-img-actions {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.25,0.46,0.45,0.94);
}
.case-card:hover .case-card-img-actions {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.case-card-view-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  text-decoration: none;
  transition: all 0.3s ease;
}
.case-card-view-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  transform: rotate(90deg);
}

/* 文字内容区 */
.case-card-body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-card-title {
  color: #1a202c;
  font-size: clamp(0.95rem, 1.1vw, 1.1rem);
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.case-card-summary {
  color: #718096;
  font-size: 0.82rem;
  line-height: 1.6;
  margin: 0 0 14px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 底部：标签 + 链接 */
.case-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid rgba(0,0,0,0.06);
}
.case-card-tag {
  font-size: 0.7rem;
  color: #000;
  background: rgba(133,206,3,0.1);
  border: 1px solid rgba(133,206,3,0.2);
  border-radius: 4px;
  padding: 2px 10px;
  font-weight: 500;
  letter-spacing: 0.03em;
}
.case-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #a0aec0;
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
}
.case-card-link svg {
  transition: transform 0.3s ease;
  width: 13px;
  height: 13px;
}
.case-card:hover .case-card-link {
  color: var(--primary);
}
.case-card:hover .case-card-link svg {
  transform: translateX(4px);
}

/* 底部查看更多按钮 */
.cases-more-wrap {
  text-align: center;
  margin-top: 44px;
  position: relative;
  z-index: 2;
}
.cases-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  color: #1a202c;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 50px;
  background: #fff;
  transition: all 0.35s ease;
  letter-spacing: 0.03em;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.cases-more-btn svg {
  transition: transform 0.35s ease;
}
.cases-more-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 8px 32px rgba(133,206,3,0.25);
  transform: translateY(-2px);
}

/* 响应式 */
@media (max-width: 1100px) {
  .cases-grid {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    padding: 0 15px;
  }
}
@media (max-width: 768px) {
  .section-cases {
    padding: 60px 0 70px;
  }
  .cases-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .case-card-img {
    height: 180px;
  }
  .cases-more-btn {
    padding: 10px 24px;
    font-size: 0.82rem;
  }
}

/* ===== 公司简介板块 ===== */
.section-company {
  position: relative;
  background: #ffffff;
  padding: 90px 0 100px;
}
.company-container {
  width: 75%;
  max-width: 1600px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
/* 中间分割线 — 垂直水雾渐变（绝对定位，不参与高度计算） */
.company-divider {
  position: absolute;
  left: 50%;
  top: 40px;
  bottom: 40px;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(133,206,3,0.08) 20%,
    rgba(133,206,3,0.15) 50%,
    rgba(133,206,3,0.08) 80%,
    transparent 100%
  );
}

/* 左侧 50% 图片区 — 决定整个容器高度 */
.company-left {
  width: calc(50% - 10px);
  padding-top: 50px;
  box-sizing: border-box;
}
.company-img-wrap {
  position: relative;
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
}
.company-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
  filter: saturate(0.65) brightness(1.02);
  transition: filter 0.5s ease, transform 0.6s ease;
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #e8ecf1, #d5dbdf);
}
/* 视频默认显示占位（poster不存在时使用渐变背景） */
.company-video::-webkit-media-controls-start-playback-button {
  display: none !important;
}
.company-img-wrap::before {
  content: '';
  display: block;
  padding-bottom: 75%;
}
.company-img-wrap:hover .company-video {
  filter: saturate(0.85) brightness(1.04);
  transform: scale(1.03);
}
/* 实地拍摄徽章 */
.company-img-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  color: rgba(255,255,255,0.85);
  font-size: 0.78rem;
  font-weight: 500;
  z-index: 2;
  letter-spacing: 0.03em;
}

/* ===== 视频播放按钮 ===== */
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(133,206,3,0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 6px 24px rgba(133,206,3,0.35);
  pointer-events: auto;
}
.video-play-btn svg {
  width: 28px;
  height: 28px;
  margin-left: 3px;
}
.video-play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--primary-dark);
  box-shadow: 0 8px 32px rgba(133,206,3,0.5);
}
.video-playing .video-play-btn {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.8);
}

/* 右侧 50% 文字区 — 绝对定位跟随容器高度 */
.company-right {
  position: absolute;
  top: 0;
  right: 0;
  width: calc(50% - 10px);
  height: 100%;
  padding: 50px 0 0 24px;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}
/* 可滚动区域（仅正文+按钮，标题副标题固定不滚） */
.company-right-scroll {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.15) transparent;
}
.company-right-scroll::-webkit-scrollbar {
  width: 5px;
}
.company-right-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.company-right-scroll::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.15);
  border-radius: 4px;
}
.company-title {
  color: #1a202c;
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  font-weight: 800;
  margin: 50px 0 8px;
  line-height: 1.3;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.company-subtitle {
  color: #85ce03;
  font-size: clamp(0.85rem, 1vw, 1rem);
  font-weight: 600;
  margin: 0 0 24px;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.company-body {
  color: rgba(30,41,59,0.88);
  font-size: clamp(0.95rem, 1.15vw, 1.05rem);
  line-height: 1.85;
  flex: 1;
}
.company-body p {
  margin: 0 0 12px;
}
.company-body p:last-child {
  margin-bottom: 0;
}
.company-footer {
  margin-top: 30px;
  flex-shrink: 0;
}
.company-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  background: var(--primary);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 50px;
  transition: all 0.35s ease;
  letter-spacing: 0.03em;
  box-shadow: 0 4px 16px rgba(133,206,3,0.2);
}
.company-btn svg {
  transition: transform 0.35s ease;
}
.company-btn:hover {
  background: var(--primary-dark);
  box-shadow: 0 8px 28px rgba(133,206,3,0.3);
  transform: translateY(-2px);
}
.company-btn:hover svg {
  transform: translateX(4px);
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .company-container {
    width: 100%;
  }
  .company-left {
    padding-left: 15px;
  }
  .company-img-wrap::before {
    padding-bottom: 60%;
  }
  .company-right {
    padding-left: 18px;
    padding-right: 15px;
  }
}
/* 移动端：上下堆叠 */
@media (max-width: 768px) {
  .section-company {
    padding: 60px 0 70px;
  }
  .company-left {
    width: 100%;
    padding: 0 15px;
    box-sizing: border-box;
  }
  .company-divider {
    position: relative;
    left: auto;
    top: auto;
    bottom: auto;
    width: auto;
    height: 1px;
    margin: 20px 15px;
    background: linear-gradient(
      90deg,
      transparent 0%,
      rgba(133,206,3,0.08) 20%,
      rgba(133,206,3,0.15) 50%,
      rgba(133,206,3,0.08) 80%,
      transparent 100%
    );
  }
  .company-right {
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    height: auto;
    padding: 0 15px;
  }
  .company-right-scroll {
    overflow-y: visible;
    flex: none;
  }
  .company-img-wrap {
    margin-top: 10px;
  }
  .company-img-wrap::before {
    padding-bottom: 66%;
  }
  .company-title {
    font-size: clamp(1.1rem, 5vw, 1.4rem);
    margin: 30px 0 6px;
  }
  .company-btn {
    padding: 10px 22px;
    font-size: 0.82rem;
  }
}

/* ============================================
   移动端核心产品板块
   ============================================ */
.section-cat-products-mobile { display: none; }
@media(max-width:768px) {
  .section-cat-products-mobile { display: block; }
  /* 隐藏桌面版 */
  .section-cat-products { display: none !important; }

  /* 移动端新板块背景 */
  .section-cat-products-mobile {
    padding: 50px 0;
    background: #e6f7f0;
    position: relative;
    overflow: hidden;
  }
  .section-cat-products-mobile .section-title { color: #1a202c; }
  .section-cat-products-mobile .section-title .title-highlight {
    background: linear-gradient(135deg, #85ce03 0%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .section-cat-products-mobile .section-subtitle { color: #64748b; }

  /* 分类下拉选择器 */
  .cat-mobile-dropdown { position: relative; z-index: 10; }
  .cat-mobile-dropdown-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px; cursor: pointer;
    color: #1a202c; font-size: .95rem; font-weight: 600;
    background: #fff; border: 1px solid #d5e0dc;
    border-radius: 10px; -webkit-tap-highlight-color: transparent;
    user-select: none;
  }
  .cat-mobile-dropdown-header svg {
    transition: transform .3s ease; color: #94a3b8;
  }
  .cat-mobile-dropdown-header.open svg { transform: rotate(180deg); }
  .cat-mobile-dropdown-body {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    margin-top: 4px; background: #fff;
    border: 1px solid #d5e0dc; border-radius: 10px;
    overflow: hidden; box-shadow: 0 8px 24px rgba(0,0,0,.1);
  }
  .cat-mobile-dropdown-body.open { display: block; }
  .cat-mobile-dropdown-item {
    padding: 14px 16px; color: #475569; font-size: .9rem;
    cursor: pointer; border-bottom: 1px solid #f1f5f9;
    transition: all .2s; -webkit-tap-highlight-color: transparent;
  }
  .cat-mobile-dropdown-item:last-child { border-bottom: none; }
  .cat-mobile-dropdown-item:active { background: #f0fdf4; color: #85ce03; }

  /* 幻灯片区域 */
  .cat-mobile-slider {
    position: relative; margin: 24px 0 0;
    border-radius: 12px; overflow: hidden;
    background: #fff;
    border: 1px solid #e2e8f0;
  }
  .cat-mobile-slide {
    display: none; align-items: stretch;
    min-height: 140px;
  }
  .cat-mobile-slide.active { display: flex; }
  .cat-mobile-slide-img {
    flex: 0 0 40%; background-size: cover; background-position: center;
    min-height: 140px;
  }
  .cat-mobile-slide-info {
    flex: 1; padding: 16px; display: flex; flex-direction: column; justify-content: center;
  }
  .cat-mobile-slide-info h4 {
    font-size: 1rem; font-weight: 700; color: #1a202c; margin: 0 0 6px;
  }
  .cat-mobile-slide-info p {
    font-size: .78rem; color: #64748b; line-height: 1.6; margin: 0 0 10px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  }
  .cat-mobile-slide-info a {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: .78rem; font-weight: 600; color: #85ce03; text-decoration: none;
  }
  .cat-mobile-slider-dots {
    display: flex; justify-content: center; gap: 6px; padding: 12px 0 14px;
  }
  .cat-mobile-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: #cbd5e1; transition: all .3s;
  }
  .cat-mobile-dot.active { width: 18px; border-radius: 3px; background: #85ce03; }

  /* 产品列表 */
  .cat-mobile-products {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 4px;
  }
  .cat-mobile-product-item {
    display: block; text-decoration: none; color: inherit;
    background: #fff; border: 1px solid #e2e8f0;
    border-radius: 10px; overflow: hidden; transition: all .3s;
  }
  .cat-mobile-product-item:active { background: #f8fafc; }
  .cat-mobile-product-img {
    width: 100%; aspect-ratio: 4/3; overflow: hidden; background: #f8fafc;
  }
  .cat-mobile-product-img img {
    width: 100%; height: 100%; object-fit: cover; display: block;
  }
  .cat-mobile-product-name {
    display: block; padding: 8px 10px;
    font-size: .78rem; color: #1a202c; font-weight: 500;
    text-align: center; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }

  /* 查看更多按钮 */
  .cat-mobile-more-btn {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    margin-top: 20px; padding: 12px 0;
    font-size: .88rem; font-weight: 600; color: #fff;
    background: linear-gradient(135deg, #85ce03, #6ba802);
    border-radius: 10px; text-decoration: none;
    transition: all .3s;
  }
  .cat-mobile-more-btn:active { opacity: .8; }
  .cat-mobile-more-btn svg { width: 16px; height: 16px; }
  .sol-title-desktop { display: none; }
  .sol-title-mobile { display: inline; }
}
@media(min-width:769px) {
  .sol-title-desktop { display: inline; }
  .sol-title-mobile { display: none; }
}