/* ========== LVKESORT 中文版网站样式 ========== */
/* 绿科机械 - 深色+绿色工业风格 */
/* 中文字体适配 | 图片路径指向父目录 */

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700;900&family=Oswald:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --primary: #1a3a4a;
  --primary-dark: #0f2530;
  --primary-darker: #081820;
  --accent: #4CAF50;
  --accent-light: #66BB6A;
  --accent-dark: #388E3C;
  --text-light: #ffffff;
  --text-gray: #b0bec5;
  --text-dark: #2c3e50;
  --bg-light: #f7f9fa;
  --bg-card: #ffffff;
  --border-color: #e0e6ea;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.18);
  --radius: 8px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  /* 中文字体栈 */
  --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
  --font-brand: 'Oswald', 'Helvetica Neue', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== Animations ========== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
  padding: 0;
}
.header.scrolled {
  background: rgba(15,37,48,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
  backdrop-filter: blur(10px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  transition: var(--transition);
}
.header.scrolled .header-inner { padding: 10px 0; }
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 44px; height: 44px;
  background: var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: white;
  transition: var(--transition);
}
.logo:hover .logo-icon { transform: rotate(180deg); background: var(--accent-light); }
.logo-text {
  font-family: var(--font-brand);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 2px;
}
.logo-text span { color: var(--accent); }
.logo-sub {
  font-size: 10px;
  color: var(--text-gray);
  letter-spacing: 1px;
}
.nav { display: flex; align-items: center; gap: 20px; }
.nav a {
  color: rgba(255,255,255,0.85);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
}
.nav a:hover { color: var(--accent); }
.nav a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 0.3s;
}
.nav a:hover::after { width: 100%; }
.nav-cta {
  background: var(--accent) !important;
  color: white !important;
  padding: 8px 16px !important;
  border-radius: 4px;
  font-weight: 600 !important;
  letter-spacing: 1px;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--accent-light) !important; transform: translateY(-1px); }
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
}

/* ========== Hero Banner ========== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0.4;
  transition: transform 8s ease;
}
.hero:hover .hero-bg { transform: scale(1.03); }
.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(8,24,32,0.9) 0%, rgba(26,58,74,0.7) 50%, rgba(15,37,48,0.85) 100%);
}
.hero-particles {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image: radial-gradient(2px 2px at 20px 30px, rgba(76,175,80,0.3), transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.15), transparent),
    radial-gradient(1px 1px at 90px 40px, rgba(76,175,80,0.2), transparent),
    radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.1), transparent),
    radial-gradient(2px 2px at 160px 30px, rgba(76,175,80,0.15), transparent);
  background-size: 200px 100px;
  animation: float 8s ease-in-out infinite;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--text-light);
  padding: 0 20px;
  max-width: 900px;
}
.hero-badge {
  display: inline-block;
  background: rgba(76,175,80,0.15);
  border: 1px solid rgba(76,175,80,0.3);
  color: var(--accent-light);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease both;
}
.hero h1 {
  font-family: var(--font-brand);
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.hero h1 span {
  color: var(--accent);
  position: relative;
  display: inline-block;
}
.hero h1 span::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent);
  opacity: 0.3;
  border-radius: 2px;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 36px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  margin-top: 50px;
  animation: fadeInUp 0.8s ease 0.8s both;
}
.hero-stat { text-align: center; }
.hero-stat strong {
  display: block;
  font-family: var(--font-brand);
  font-size: 32px;
  color: var(--accent);
  letter-spacing: 1px;
}
.hero-stat span {
  font-size: 12px;
  color: var(--text-gray);
  letter-spacing: 2px;
}
.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
}
.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,0.5);
  font-size: 20px;
  animation: float 2s ease-in-out infinite;
  cursor: pointer;
  transition: color 0.3s;
}
.scroll-down:hover { color: var(--accent); }

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(76,175,80,0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(76,175,80,0.4);
}
.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}
.btn-white {
  background: white;
  color: var(--primary-dark);
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(0,0,0,0.2); }
.btn-sm { padding: 10px 20px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 15px; }

/* ========== Section Common ========== */
.section { padding: 100px 0; }
.section-dark {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-darker) 100%);
  color: var(--text-light);
  position: relative;
}
.section-dark::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  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='%234CAF50' fill-opacity='0.03'%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");
  pointer-events: none;
}
.section-light { background: var(--bg-light); }
.section-title { text-align: center; margin-bottom: 60px; }
.section-title h2 {
  font-family: var(--font-brand);
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.section-dark .section-title h2 { color: white; }
.section-title p {
  font-size: 15px;
  color: #666;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}
.section-dark .section-title p { color: var(--text-gray); }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 3px;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-label.center { justify-content: center; }
.section-label span {
  display: inline-block;
  width: 30px;
  height: 2px;
  background: var(--accent);
}
.section-label.light { color: var(--accent-light); }
.section-label.light span { background: var(--accent-light); }

/* ========== About Section ========== */
.about {
  background: var(--primary-dark);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}
.about::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(76,175,80,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.about-img-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-wrap img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  transition: transform 0.6s;
}
.about-img-wrap:hover img { transform: scale(1.05); }
.about-img-badge {
  position: absolute;
  bottom: 20px; left: 20px;
  background: var(--accent);
  color: white;
  padding: 16px 24px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-md);
}
.badge-num {
  display: block;
  font-family: var(--font-brand);
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
}
.badge-text {
  font-size: 11px;
  letter-spacing: 1px;
  opacity: 0.9;
}
.about-text .section-label { margin-bottom: 16px; }
.about-text h2 {
  font-family: var(--font-brand);
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
  color: white;
}
.about-text p {
  color: var(--text-gray);
  margin-bottom: 16px;
  line-height: 1.8;
  font-size: 15px;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0;
}
.about-feat {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-light);
  font-weight: 500;
}
.about-feat i { color: var(--accent); font-size: 16px; }

/* ========== Products Section ========== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.product-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.product-img {
  height: 280px;
  background: #eef2f5;
  overflow: hidden;
  position: relative;
}
.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.product-card:hover .product-img img { transform: scale(1.08); }
.product-tag {
  position: absolute;
  top: 16px; left: 16px;
  background: var(--accent);
  color: white;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  z-index: 1;
}
.product-body { padding: 28px; }
.product-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary-dark);
}
.product-body p {
  font-size: 14px;
  color: #666;
  line-height: 1.7;
  margin-bottom: 18px;
}
.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}
.product-link:hover { gap: 12px; color: var(--accent-dark); }

/* ========== All Products Grid ========== */
.all-products-section {
  margin-top: 70px;
  padding-top: 50px;
  border-top: 2px solid var(--border-color);
}
.all-products-header {
  text-align: center;
  margin-bottom: 36px;
}
.all-products-header h3 {
  font-family: var(--font-brand);
  font-size: 26px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.all-products-header p { font-size: 14px; color: #888; }
.all-products-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.all-product-item {
  display: flex;
  flex-direction: column;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  text-align: center;
}
.all-product-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.ap-img {
  width: 100%;
  height: 110px;
  overflow: hidden;
  background: #eef2f5;
}
.ap-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.all-product-item:hover .ap-img img { transform: scale(1.1); }
.all-product-item span {
  display: block;
  padding: 10px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-dark);
  line-height: 1.3;
}

/* ========== Production Line Section ========== */
.production-line {
  background: linear-gradient(135deg, var(--primary-darker) 0%, var(--primary) 100%);
  color: white;
  position: relative;
  overflow: hidden;
}
.production-line::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
}
.production-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.production-text .section-label { margin-bottom: 16px; }
.production-text h2 {
  font-family: var(--font-brand);
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 20px;
  color: white;
}
.production-text p {
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 20px;
  font-size: 15px;
}
.production-features {
  list-style: none;
  margin-bottom: 28px;
}
.production-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-light);
}
.production-features li i { color: var(--accent); }
.production-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.production-img img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.6s;
}
.production-img:hover img { transform: scale(1.03); }

/* ========== Stats Section ========== */
.stats {
  background: linear-gradient(135deg, var(--primary) 0%, #0d2a35 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
}
.stats::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%234CAF50' fill-opacity='0.04'%3E%3Cpath d='M20 20.5V18H0v-2h20v-2l2 3-2 3zm0-20V0H0v2h20v2l2-3-2-3z'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.stats-tagline {
  font-family: var(--font-brand);
  font-size: 28px;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
  letter-spacing: 2px;
}
.stats-desc {
  font-size: 15px;
  color: var(--text-gray);
  max-width: 900px;
  margin: 0 auto 50px;
  line-height: 1.8;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.stat-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 36px 20px;
  border-radius: var(--radius);
  transition: var(--transition);
}
.stat-item:hover {
  background: rgba(76,175,80,0.1);
  border-color: rgba(76,175,80,0.2);
  transform: translateY(-3px);
}
.stat-icon {
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 16px;
}
.stat-number {
  font-family: var(--font-brand);
  font-size: 48px;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.stat-number span { color: var(--accent); font-size: 0.6em; }
.stat-label {
  font-size: 13px;
  color: var(--text-gray);
  letter-spacing: 2px;
}

/* ========== Machine Display ========== */
.machine-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.machine-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}
.machine-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.6s;
}
.machine-item:hover img { transform: scale(1.1); }
.machine-overlay {
  position: absolute;
  bottom: 0; left: 0;
  width: 100%;
  padding: 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.85), rgba(0,0,0,0.2), transparent);
  color: white;
  transition: var(--transition);
}
.machine-item:hover .machine-overlay { padding-bottom: 32px; }
.machine-overlay h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.machine-view {
  font-size: 12px;
  color: var(--accent-light);
  opacity: 0;
  transition: opacity 0.3s;
  font-weight: 600;
  letter-spacing: 1px;
}
.machine-item:hover .machine-view { opacity: 1; }

/* ========== Why Choose Us ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.feature-item {
  text-align: center;
  padding: 40px 24px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  transition: var(--transition);
}
.feature-item:hover {
  background: rgba(76,175,80,0.08);
  border-color: rgba(76,175,80,0.15);
  transform: translateY(-5px);
}
.feature-icon {
  width: 80px; height: 80px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, rgba(76,175,80,0.15), rgba(76,175,80,0.05));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  color: var(--accent);
  transition: var(--transition);
}
.feature-item:hover .feature-icon {
  background: var(--accent);
  color: white;
  transform: scale(1.1);
}
.feature-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-light);
}
.feature-item p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ========== Services Section ========== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.service-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.service-img {
  height: 220px;
  overflow: hidden;
  position: relative;
}
.service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.service-card:hover .service-img img { transform: scale(1.06); }
.service-body { padding: 28px; }
.service-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}
.service-body h3 i { color: var(--accent); font-size: 16px; }
.service-body p {
  font-size: 14px;
  color: #666;
  line-height: 1.7;
}
.service-247 {
  font-size: 15px;
  color: #555;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.service-247 i { color: var(--accent); }

/* ========== FAQ Section ========== */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.faq-item {
  background: white;
  border-radius: var(--radius);
  padding: 28px;
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}
.faq-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.faq-item h3 i {
  color: var(--accent);
  margin-top: 3px;
  flex-shrink: 0;
}
.faq-item p {
  font-size: 14px;
  color: #555;
  line-height: 1.8;
  margin: 0;
}

/* ========== CTA Banner ========== */
.cta-banner {
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 50%, var(--accent-light) 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; left: -10%;
  width: 400px; height: 400px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%; right: -5%;
  width: 300px; height: 300px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}
.cta-banner h2 {
  font-family: var(--font-brand);
  font-size: 34px;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.cta-banner p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
}
.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ========== Footer ========== */
.footer {
  background: var(--primary-darker);
  color: var(--text-gray);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.footer-logo .logo-icon {
  width: 40px; height: 40px;
  font-size: 20px;
}
.footer-logo .logo-text { font-size: 22px; }
.footer-logo .logo-sub { font-size: 10px; }
.footer-about h3,
.footer-links h3,
.footer-contact h3 {
  font-family: var(--font-brand);
  font-size: 18px;
  font-weight: 600;
  color: white;
  margin-bottom: 24px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.footer-about p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 15px;
}
.footer-slogan {
  color: var(--accent) !important;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 1px;
}
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-gray);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
}
.footer-links a:hover { color: var(--accent); transform: translateX(4px); }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 14px;
}
.footer-contact-item i {
  color: var(--accent);
  font-size: 16px;
  margin-top: 3px;
  flex-shrink: 0;
}
.footer-contact-item a {
  color: var(--text-gray);
  transition: var(--transition);
}
.footer-contact-item a:hover { color: var(--accent); }
.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.25);
}

/* ========== Footer Friends Links ========== */
.footer-friends {
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  margin-top: 20px;
}
.footer-friends h4 {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 12px;
  text-align: center;
}
.friends-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.friends-links a {
  color: var(--text-gray);
  font-size: 13px;
  transition: color 0.3s;
}
.friends-links a:hover { color: var(--accent); }
.friends-links span { color: rgba(255,255,255,0.2); }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .about-grid, .production-grid { grid-template-columns: 1fr; gap: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .all-products-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 44px; }
  .faq-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%; left: 0;
    width: 100%;
    background: var(--primary-dark);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
    box-shadow: var(--shadow-lg);
  }
  .nav.active { display: flex; }
  .mobile-menu-btn { display: block; }
  .hero { min-height: 600px; }
  .hero h1 { font-size: 32px; }
  .hero-desc { font-size: 15px; }
  .hero-stats { gap: 20px; }
  .hero-stat strong { font-size: 24px; }
  .products-grid { grid-template-columns: 1fr; }
  .all-products-grid { grid-template-columns: repeat(3, 1fr); }
  .machine-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section-title h2 { font-size: 26px; }
  .stats-tagline { font-size: 22px; }
  .cta-banner h2 { font-size: 26px; }
}
@media (max-width: 480px) {
  .all-products-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 28px; }
  .about-features { grid-template-columns: 1fr; }
}

/* ========== Product Detail Page ========== */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
  margin-bottom: 40px;
}
.product-detail-img {
  border-radius: var(--radius);
  overflow: hidden;
  background: #f0f0f0;
  box-shadow: var(--shadow-md);
}
.product-detail-img img {
  width: 100%;
  height: auto;
  display: block;
  min-height: 300px;
  object-fit: cover;
}
.breadcrumb {
  font-size: 13px;
  color: #888;
  margin-bottom: 12px;
}
.breadcrumb a { color: var(--accent); transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent-light); }
.product-detail-info h1 {
  font-family: var(--font-brand);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.product-subtitle {
  font-size: 15px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
}
.product-detail-info p {
  font-size: 15px;
  color: #555;
  line-height: 1.8;
  margin-bottom: 20px;
}
.product-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 24px;
}
.highlight-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--primary-dark);
  font-weight: 500;
}
.highlight-item i { color: var(--accent); font-size: 14px; }

/* ========== Spec Table ========== */
.spec-table-wrap {
  background: white;
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}
.spec-table-wrap h2 {
  font-family: var(--font-brand);
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.table-responsive { overflow-x: auto; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.spec-table thead th {
  background: var(--primary-dark);
  color: white;
  padding: 14px 16px;
  text-align: center;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.spec-table tbody td {
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid #eee;
}
.spec-table tbody tr:nth-child(even) { background: #f8faf9; }
.spec-table tbody tr:hover { background: #e8f5e9; }

/* ========== Related Products ========== */
.related-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.related-product-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.related-product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.related-product-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.related-product-card h4 {
  font-size: 16px;
  font-weight: 700;
  padding: 16px 16px 8px;
  color: var(--primary-dark);
}
.related-product-card p {
  font-size: 13px;
  color: #666;
  padding: 0 16px 12px;
  line-height: 1.6;
}
.related-product-card .product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  margin: 0 16px 16px;
  transition: var(--transition);
}
.related-product-card .product-link:hover { gap: 12px; }

/* ========== Responsive for Detail ========== */
@media (max-width: 768px) {
  .product-detail-grid { grid-template-columns: 1fr; }
  .product-highlights { grid-template-columns: 1fr; }
  .related-products-grid { grid-template-columns: 1fr; }
  .product-detail-info h1 { font-size: 22px; }
}


/* ========== 选型指南快速入口 (SEO增强) ========== */
.selection-guide {
  background: linear-gradient(135deg, #f8faf9 0%, #e8f5e9 100%);
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 30px;
}
.guide-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  text-decoration: none;
}
.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.guide-card:hover .guide-icon {
  background: var(--accent);
  color: white;
}
.guide-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: rgba(76, 175, 80, 0.1);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 20px;
  transition: var(--transition);
}
.guide-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.guide-card p {
  font-size: 14px;
  color: #666;
  line-height: 1.7;
  margin-bottom: 16px;
}
.guide-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}
.guide-card:hover .guide-link { gap: 12px; }

/* ========== 产品卡片双链接 ========== */
.product-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.product-link-quote {
  background: rgba(76, 175, 80, 0.1);
  padding: 8px 14px;
  border-radius: 6px;
}
.product-link-quote:hover {
  background: var(--accent);
  color: white;
}

/* ========== 应用案例区域 (GEO增强) ========== */
.application-cases {
  background: white;
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 40px;
  box-shadow: var(--shadow-sm);
}
.application-cases h2 {
  font-family: var(--font-brand);
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
  text-transform: uppercase;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.case-item {
  padding: 20px;
  background: #f8faf9;
  border-radius: 8px;
  border-left: 4px solid var(--accent);
}
.case-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}
.case-item p {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
}

/* ========== 选型参数说明 (GEO增强) ========== */
.selection-notes {
  background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 40px;
}
.selection-notes h2 {
  font-family: var(--font-brand);
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
  text-transform: uppercase;
}
.selection-notes p {
  font-size: 14px;
  color: #444;
  line-height: 1.9;
  margin-bottom: 16px;
}
.selection-notes p:last-child { margin-bottom: 0; }
.selection-notes strong {
  color: var(--accent-dark);
}

/* ========== Responsive ========== */
@media (max-width: 992px) {
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .guide-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .product-actions { flex-direction: column; }
  .product-actions .product-link { width: 100%; justify-content: center; }
}