/* ========== 顶部导航 ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(6,35,29,0.55) 0%, rgba(6,35,29,0.25) 60%, rgba(6,35,29,0) 100%);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: all 0.35s ease;
}
.header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 24px rgba(13,59,50,0.12);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
  transition: color 0.35s ease;
  text-decoration: none;
}
.header.scrolled .logo {
  color: var(--primary-dark);
}
.logo-img {
  height: 44px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  transition: all 0.35s ease;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.25));
}
.header.scrolled .logo-img {
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.1));
}
.logo:hover .logo-img {
  transform: scale(1.05);
}
.logo-icon-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 2px 12px rgba(0,0,0,0.25);
  transition: all 0.35s ease;
  flex-shrink: 0;
}
.header.scrolled .logo-icon-img {
  box-shadow: 0 2px 8px rgba(13,59,50,0.2);
}
.logo:hover .logo-icon-img {
  transform: scale(1.08);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
  transition: box-shadow 0.35s ease;
}
.header.scrolled .logo-icon {
  box-shadow: 0 2px 8px rgba(13,59,50,0.2);
}
.logo-text small {
  display: block;
  font-size: 10px;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  letter-spacing: 2px;
  margin-top: -2px;
  transition: color 0.35s ease;
}
.header.scrolled .logo-text small {
  color: var(--text-light);
}
.main-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-menu li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  text-shadow: 0 1px 6px rgba(0,0,0,0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  border-radius: 6px;
  overflow: hidden;
}
.main-menu li a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.12);
  border-radius: 6px;
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}
.main-menu li a:hover::before {
  opacity: 1;
  transform: scale(1);
}
.main-menu li a:hover {
  color: #fff;
  text-shadow: 0 1px 10px rgba(0,0,0,0.5);
  transform: translateY(-1px);
}
.main-menu li a:active {
  transform: scale(0.95);
}
.header.scrolled .main-menu li a {
  color: var(--text-sub);
  text-shadow: none;
}
.header.scrolled .main-menu li a::before {
  background: rgba(27,94,79,0.08);
}
.header.scrolled .main-menu li a:hover {
  color: var(--primary);
  text-shadow: none;
}
.main-menu li a.active {
  color: #fff;
  font-weight: 600;
  text-shadow: 0 1px 10px rgba(0,0,0,0.5);
}
.header.scrolled .main-menu li a.active {
  color: var(--primary);
  text-shadow: none;
}
.main-menu li a.active::before {
  opacity: 1;
  transform: scale(1);
  background: rgba(255,255,255,0.15);
}
.header.scrolled .main-menu li a.active::before {
  background: rgba(27,94,79,0.1);
}
.main-menu li a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 3px;
  background: linear-gradient(90deg, var(--tech-light), var(--accent));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(77,208,225,0.6);
  animation: navUnderlineExpand 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.header.scrolled .main-menu li a.active::after {
  background: linear-gradient(90deg, var(--primary), var(--tech));
  box-shadow: 0 0 6px rgba(27,94,79,0.4);
}
@keyframes navUnderlineExpand {
  0% {
    width: 0;
    opacity: 0;
  }
  100% {
    width: 28px;
    opacity: 1;
  }
}
.nav-cta {
  padding: 8px 24px;
  background: transparent;
  color: #fff !important;
  border: 1.5px solid rgba(255,255,255,0.6);
  border-radius: 6px;
  font-size: 14px !important;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.nav-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}
.nav-cta:hover::before {
  left: 100%;
}
.nav-cta:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.nav-cta:active {
  transform: scale(0.95);
}
.header.scrolled .nav-cta {
  background: var(--primary);
  color: #fff !important;
  border-color: var(--primary);
}
.header.scrolled .nav-cta::before {
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
}
.header.scrolled .nav-cta:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(27,94,79,0.3);
}
.header.scrolled .nav-cta:active {
  transform: scale(0.95);
}
.nav-cta::after { display: none !important; }
.mobile-menu-btn {
  display: none;
  font-size: 24px;
  color: #fff;
  transition: color 0.35s ease;
}
.header.scrolled .mobile-menu-btn {
  color: var(--text-main);
}

/* ========== Hero 全屏轮播 ========== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  margin-top: 0;
}
/* Hero 渐变光晕装饰 */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(38,166,154,0.3), transparent 70%);
  border-radius: 50%;
  filter: blur(40px);
  z-index: 1;
  animation: orbFloat 10s ease-in-out infinite;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -15%;
  right: -5%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(255,167,38,0.2), transparent 70%);
  border-radius: 50%;
  filter: blur(50px);
  z-index: 1;
  animation: orbFloat 12s ease-in-out infinite reverse;
  pointer-events: none;
}
.hero-slides {
  position: relative;
  width: 100%;
  height: 100%;
}
.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease;
  background-size: cover;
  background-position: center;
}
.hero-slide.active {
  opacity: 1;
}
.hero-slide.active {
  animation: kenBurns 20s ease-in-out infinite alternate;
}
.hero-slide::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(10,40,20,0.3) 0%, rgba(10,40,20,0.5) 100%);
}
.hero-slide-1 {
  background-image: linear-gradient(rgba(20,60,30,0.35), rgba(20,60,30,0.45)), url('../images/index/banner-1.jpg');
}
.hero-slide-2 {
  background-image: linear-gradient(rgba(20,60,30,0.35), rgba(20,60,30,0.45)), url('../images/index/banner-2.jpg');
}
.hero-slide-3 {
  background-image: linear-gradient(rgba(20,60,30,0.35), rgba(20,60,30,0.45)), url('../images/index/banner-3.jpg');
}
.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  padding: 0 24px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 24px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 30px;
  font-size: 14px;
  margin-bottom: 24px;
  letter-spacing: 3px;
  animation: breath 3s ease-in-out infinite;
}
.hero-title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 4px;
  text-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.hero-title .highlight {
  background: linear-gradient(135deg, #4dd0e1, #26a69a, #ffa726, #4dd0e1);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientFlow 5s ease infinite;
}
.hero-subtitle {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,0.92);
  margin-bottom: 16px;
  max-width: 700px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.hero-data {
  display: flex;
  gap: 60px;
  margin-top: 32px;
}
.hero-data-item {
  text-align: center;
  position: relative;
}
.hero-data-item::after {
  content: '';
  position: absolute;
  right: -30px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.3), transparent);
}
.hero-data-item:last-child::after {
  display: none;
}
.hero-data-num {
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, #4dd0e1, #80cbc4, #ffcc80);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  animation: breathGlow 3s ease-in-out infinite;
}
.hero-data-num span {
  font-size: 20px;
  font-weight: 400;
}
.hero-data-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-top: 10px;
  letter-spacing: 1px;
}
.hero-dots {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}
.hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s;
}
.hero-dot.active {
  width: 32px;
  border-radius: 4px;
  background: #fff;
}
.hero-scroll {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  letter-spacing: 2px;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ========== 关于我们 ========== */
.about-section {
  background: linear-gradient(180deg, #fff 0%, #f0faf8 40%, #e0f2f1 100%);
  position: relative;
  overflow: hidden;
}
.about-section::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -100px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(38,166,154,0.08), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.about-section::after {
  content: '';
  position: absolute;
  bottom: 20%;
  left: -80px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(255,167,38,0.06), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.about-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.about-image {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(46,125,50,0.15);
}
.about-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: 12px;
  transition: transform 0.8s ease;
}
.about-image:hover img {
  transform: scale(1.05);
}
.about-image::after {
  content: '';
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  border: 2px solid transparent;
  border-image: linear-gradient(135deg, var(--primary-light), var(--primary)) 1;
  border-radius: 12px;
  z-index: -1;
}
.about-label {
  display: inline-block;
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 4px;
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 3px solid;
  border-image: linear-gradient(180deg, var(--primary-light), var(--primary-dark)) 1;
}
.about-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 24px;
}
.about-desc {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.9;
  margin-bottom: 32px;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 36px;
}
.about-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
  transition: all 0.3s;
}
.about-feature:hover {
  color: var(--primary);
  transform: translateX(4px);
}
.about-feature i {
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-style: normal;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(46,125,50,0.3);
}

/* ========== 数据栏 ========== */
.data-bar {
  background: linear-gradient(135deg, #0d3b32 0%, #1b5e4f 30%, #00838f 60%, #1b5e4f 100%);
  background-size: 200% 200%;
  animation: gradientFlowBg 8s ease infinite;
  padding: 60px 0;
  margin-top: 80px;
  position: relative;
  overflow: hidden;
}
.data-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(77,208,225,0.6), rgba(255,167,38,0.4), transparent);
}
.data-bar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255,167,38,0.4), rgba(77,208,225,0.6), transparent);
}
.data-bar-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.data-item {
  position: relative;
}
.data-item .data-num {
  font-size: 52px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.data-item .data-num span {
  font-size: 22px;
  font-weight: 400;
  opacity: 0.8;
}
.data-item .data-label {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  margin-top: 14px;
  letter-spacing: 2px;
}

/* ========== 产品中心 ========== */
.products-section {
  background: linear-gradient(180deg, #e0f2f1 0%, #f0faf8 20%, #fff 50%, #f0faf8 80%, #e0f2f1 100%);
  position: relative;
  overflow: hidden;
}
.products-section::before {
  content: '';
  position: absolute;
  bottom: 10%;
  left: -80px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(38,166,154,0.1), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.products-section::after {
  content: '';
  position: absolute;
  top: 15%;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255,167,38,0.06), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  position: relative;
  z-index: 1;
}
.product-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
  border: 1px solid rgba(46,125,50,0.08);
  position: relative;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
  background-size: 200% 100%;
  transform: scaleX(0);
  transition: transform 0.5s ease;
  z-index: 2;
}
.product-card:hover::before {
  transform: scaleX(1);
  animation: gradientFlow 3s linear infinite;
}
.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 50px rgba(46,125,50,0.18);
  border-color: rgba(46,125,50,0.2);
}
.product-image {
  height: 220px;
  overflow: hidden;
  position: relative;
}
.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.product-card:hover .product-image img {
  transform: scale(1.1);
}
.product-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(transparent, rgba(255,255,255,0.1));
  pointer-events: none;
}
.product-body {
  padding: 28px;
  position: relative;
}
.product-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary-bg), #e8f5e9);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
  box-shadow: 0 4px 12px rgba(46,125,50,0.1);
  transition: all 0.4s;
}
.product-card:hover .product-icon {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 8px 20px rgba(46,125,50,0.3);
}
.product-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
  transition: color 0.3s;
}
.product-card:hover .product-title {
  color: var(--primary);
}
.product-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 20px;
}
.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.product-tag {
  padding: 5px 14px;
  background: linear-gradient(135deg, var(--primary-bg), #e8f5e9);
  color: var(--primary);
  font-size: 12px;
  border-radius: 20px;
  font-weight: 500;
  transition: all 0.3s;
}
.product-card:hover .product-tag {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
}
.product-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  transition: all 0.3s;
}
.product-more:hover {
  gap: 12px;
}

/* ========== 解决方案 ========== */
.solutions-section {
  background: linear-gradient(180deg, #e0f2f1 0%, #fff 30%, #f0faf8 60%, #fff 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.solutions-section::before {
  content: '';
  position: absolute;
  top: 20%;
  right: -100px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(0,188,212,0.06), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.solutions-section::after {
  content: '';
  position: absolute;
  bottom: 10%;
  left: -80px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255,167,38,0.05), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.solution-showcase {
  position: relative;
  background: linear-gradient(135deg, #e0f2f1 0%, #f0faf8 50%, #fff8e1 100%);
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: 0 20px 60px rgba(13,59,50,0.1);
  border: 1px solid rgba(38,166,154,0.1);
}
.solution-showcase::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
  animation: shine 6s ease-in-out infinite;
  pointer-events: none;
}
@keyframes shine {
  0%, 100% { transform: translateX(-100%) rotate(45deg); }
  50% { transform: translateX(100%) rotate(45deg); }
}
.solution-slides {
  position: relative;
  min-height: 480px;
}
.solution-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 60px;
  gap: 60px;
}
.solution-slide.active {
  opacity: 1;
  visibility: visible;
  position: relative;
}
.solution-info h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.solution-info .solution-sub {
  font-size: 15px;
  color: var(--primary);
  margin-bottom: 24px;
  font-weight: 500;
}
.solution-info p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.9;
  margin-bottom: 24px;
}
.solution-list {
  margin-bottom: 32px;
}
.solution-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
}
.solution-list li::before {
  content: '✓';
  width: 18px;
  height: 18px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
}
.solution-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}
.solution-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}
.solution-nav {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  position: relative;
  z-index: 1;
}
.solution-nav-item {
  padding: 22px 16px;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
}
.solution-nav-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-bg), #e8f5e9);
  opacity: 0;
  transition: opacity 0.4s;
  z-index: 0;
}
.solution-nav-item:hover,
.solution-nav-item.active {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(46,125,50,0.15);
}
.solution-nav-item:hover::before,
.solution-nav-item.active::before {
  opacity: 1;
}
.solution-nav-item .nav-icon {
  font-size: 30px;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
  transition: transform 0.4s;
}
.solution-nav-item:hover .nav-icon,
.solution-nav-item.active .nav-icon {
  transform: scale(1.2);
}
.solution-nav-item span {
  font-size: 13px;
  color: var(--text-sub);
  font-weight: 500;
  position: relative;
  z-index: 1;
  transition: color 0.3s;
}
.solution-nav-item.active span {
  color: var(--primary);
  font-weight: 600;
}
.solution-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  font-size: 20px;
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: all 0.3s;
}
.solution-arrow:hover {
  background: var(--primary);
  color: #fff;
}
.solution-arrow.prev { left: 20px; }
.solution-arrow.next { right: 20px; }

/* ========== 成功案例 ========== */
.cases-section {
  background: linear-gradient(180deg, #fff 0%, #e0f2f1 30%, #f0faf8 70%, #fff 100%);
  position: relative;
  overflow: hidden;
}
.cases-section::before {
  content: '';
  position: absolute;
  top: 10%;
  left: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(38,166,154,0.08), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cases-section::after {
  content: '';
  position: absolute;
  bottom: 15%;
  right: -80px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(255,167,38,0.06), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  position: relative;
  z-index: 1;
}
.case-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: 1px solid rgba(46,125,50,0.08);
}
.case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px rgba(46,125,50,0.18);
  border-color: rgba(46,125,50,0.2);
}
.case-image {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.case-card:hover .case-image img {
  transform: scale(1.12);
}
.case-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(transparent, rgba(0,0,0,0.3));
  pointer-events: none;
}
.case-category {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 16px;
  background: linear-gradient(135deg, rgba(46,125,50,0.95), rgba(27,94,32,0.95));
  color: #fff;
  font-size: 12px;
  border-radius: 20px;
  font-weight: 500;
  letter-spacing: 1px;
  z-index: 2;
  backdrop-filter: blur(4px);
}
.case-body {
  padding: 26px;
}
.case-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.5;
  transition: color 0.3s;
}
.case-card:hover .case-title {
  color: var(--primary);
}
.case-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 18px;
}
.case-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.case-location {
  font-size: 13px;
  color: var(--text-light);
}
.case-link {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  transition: all 0.3s;
}
.case-link:hover {
  letter-spacing: 1px;
}

/* ========== 新闻动态 ========== */
.news-section {
  background: linear-gradient(180deg, #fff 0%, #f0faf8 40%, #e0f2f1 100%);
  position: relative;
  overflow: hidden;
}
.news-section::before {
  content: '';
  position: absolute;
  top: 20%;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0,188,212,0.06), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.news-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  position: relative;
  z-index: 1;
}
.news-featured {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  height: 100%;
  min-height: 480px;
  cursor: pointer;
  box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}
.news-featured img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.news-featured:hover img {
  transform: scale(1.08);
}
.news-featured-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px;
  background: linear-gradient(transparent, rgba(10,40,20,0.85));
  color: #fff;
}
.news-featured-tag {
  display: inline-block;
  padding: 5px 16px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  font-size: 12px;
  border-radius: 20px;
  margin-bottom: 14px;
  font-weight: 500;
  letter-spacing: 1px;
}
.news-featured-title {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
  transition: color 0.3s;
}
.news-featured:hover .news-featured-title {
  color: #a5d6a7;
}
.news-featured-date {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.news-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border-radius: 8px;
  background: transparent;
}
.news-item:last-child {
  border-bottom: none;
  padding-bottom: 20px;
}
.news-item:hover {
  background: linear-gradient(135deg, var(--primary-bg), #fff);
  transform: translateX(8px);
  box-shadow: 0 8px 25px rgba(46,125,50,0.08);
}
.news-item:hover .news-item-title {
  color: var(--primary);
}
.news-date-box {
  flex-shrink: 0;
  width: 70px;
  text-align: center;
  padding: 10px 0;
  background: linear-gradient(135deg, var(--primary-bg), #e8f5e9);
  border-radius: 10px;
  transition: all 0.3s;
}
.news-item:hover .news-date-box {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.news-date-day {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  transition: color 0.3s;
}
.news-item:hover .news-date-day {
  color: #fff;
}
.news-date-month {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 6px;
  transition: color 0.3s;
}
.news-item:hover .news-date-month {
  color: rgba(255,255,255,0.8);
}
.news-item-content {
  flex: 1;
}
.news-item-tag {
  display: inline-block;
  padding: 3px 10px;
  background: linear-gradient(135deg, var(--primary-bg), #e8f5e9);
  color: var(--primary);
  font-size: 11px;
  border-radius: 12px;
  margin-bottom: 8px;
  font-weight: 500;
}
.news-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color 0.3s;
}
.news-item-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========== CTA 板块 ========== */
.cta-section {
  background: linear-gradient(135deg, #06231d 0%, #0d3b32 25%, #1b5e4f 50%, #00838f 75%, #1b5e4f 100%);
  background-size: 300% 300%;
  animation: gradientFlowBg 10s ease infinite;
  padding: 90px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(77,208,225,0.15), transparent 70%);
  border-radius: 50%;
  animation: orbFloat 12s ease-in-out infinite;
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -40%;
  right: -15%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(255,167,38,0.12), transparent 70%);
  border-radius: 50%;
  animation: orbFloat 10s ease-in-out infinite reverse;
  pointer-events: none;
}
.cta-title {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 3px;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.cta-subtitle {
  font-size: 16px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 40px;
  letter-spacing: 2px;
  position: relative;
  z-index: 1;
}
.cta-btns {
  display: flex;
  gap: 20px;
  justify-content: center;
  position: relative;
  z-index: 1;
}

/* ========== 页脚 ========== */
.footer {
  background: linear-gradient(180deg, #0d3b32 0%, #06231d 50%, #031410 100%);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--tech), var(--accent), var(--tech), transparent);
  background-size: 200% 100%;
  animation: gradientFlow 6s linear infinite;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  position: relative;
  z-index: 1;
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 20px;
}
.footer-brand .logo-icon {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  box-shadow: 0 4px 15px rgba(76,175,80,0.3);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.9;
  margin-bottom: 20px;
  color: rgba(255,255,255,0.6);
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  padding: 6px 0;
  color: rgba(255,255,255,0.6);
  transition: color 0.3s;
}
.footer-contact-item:hover {
  color: var(--primary-light);
}
.footer-col h4 {
  font-size: 16px;
  color: #fff;
  margin-bottom: 20px;
  font-weight: 600;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 2px;
}
.footer-col ul li {
  padding: 6px 0;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  transition: all 0.3s;
  position: relative;
  padding-left: 0;
}
.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  position: relative;
  z-index: 1;
  letter-spacing: 1px;
}