a:focus { outline: none !important; }
:root {
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-500: #64748B;
  --gray-700: #334155;
  --gray-900: #0F172A;
  --blue-primary: #0066FF;
  --blue-light: #3388FF;
  --blue-gradient: linear-gradient(135deg, #0066FF 0%, #00D4FF 100%);
  --cyan-accent: #00D4FF;
  --gold: #D4AF37;
  --gold-light: #E8C547;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --shadow-xl: 0 12px 32px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-btn: 50px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-sans); color: var(--gray-900); background: var(--white); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; } img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-title { font-size: 2.25rem; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.02em; }
.section-subtitle { font-size: 1.05rem; color: var(--gray-500); margin-bottom: 56px; line-height: 1.6; }

/* Navigation */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(0,0,0,0.05); transition: var(--transition); }
.nav.scrolled { background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; max-width: 1200px; margin: 0 auto; }
.logo { font-size: 1.25rem; font-weight: 800; color: var(--blue-primary); display: flex; align-items: center; gap: 10px; }
.logo span { font-weight: 500; font-size: 0.85rem; color: var(--gray-500); }










.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--gray-700); position: relative; outline: none !important; }
.nav-links a:hover, .nav-links a.active { color: var(--blue-primary); }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--blue-primary); transition: width 0.3s; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-link { padding: 10px 24px; border-radius: 50px; color: var(--blue-primary); font-weight: 600; position: relative; outline: none !important; }
.nav-link:hover { color: var(--blue-primary); }
.nav-link::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--blue-primary); transition: width 0.3s; }
.nav-link:hover::after { width: 100%; }

/* 语言切换 */
.lang-switch { display: flex; align-items: center; gap: 4px; margin-left: 8px; padding-left: 16px; border-left: 1px solid rgba(0,0,0,0.08); }
.lang-switch .lang-link { font-size: 0.85rem; font-weight: 600; padding: 4px 10px; border-radius: 50px; color: var(--gray-500); transition: var(--transition); }
.lang-switch .lang-link::after { display: none; }
.lang-switch .lang-link:hover { color: var(--blue-primary); background: rgba(0,102,255,0.06); }
.lang-switch .lang-link.active { color: #FFF; background: var(--blue-primary); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; }
.nav-toggle svg { width: 24px; height: 24px; }

/* 滚动触发动画 */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* 产品卡片 Hover 效果 */
.product-mini-card { transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; }
.product-mini-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,102,255,0.12); }
.product-mini-img img { transition: transform 0.3s ease; }
.product-mini-card:hover .product-mini-img img { transform: scale(1.05); }
.view-param-link { opacity: 0 !important; transform: translateY(10px); }
.product-mini-card:hover .view-param-link { opacity: 1 !important; transform: translateY(0); }

/* Hero */
.hero { min-height: 90vh; position: relative; overflow: hidden; background: radial-gradient(circle at 50% 20%, rgba(0,102,255,0.07) 0%, transparent 40%), radial-gradient(circle at 50% 80%, rgba(0,212,255,0.05) 0%, transparent 40%), linear-gradient(135deg, #F0F7FF 0%, #FFFFFF 50%, #F5FAFF 100%); }
.hero-gradient { position: absolute; right: 10%; top: 10%; width: 35%; height: 80%; background: linear-gradient(135deg, rgba(0,102,255,0.05), rgba(0,212,255,0.08)); border-radius: 50%; filter: blur(60px); }
.hero .container { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 48px; max-width: 1200px; margin: 0 auto; padding: 100px 24px 60px; }
.hero-content { flex: 1; max-width: 600px; position: relative; z-index: 1; }
.hero-right { flex: 0 0 520px; display: flex; flex-direction: column; align-items: center; }
.hero-visual { width: 520px; height: 520px; position: relative; z-index: 1; }
.hero-visual svg { width: 100%; height: 100%; animation: float 6s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0px); } 50% { transform: translateY(-12px); } }
.hero h1 { font-size: 3.5rem; font-weight: 800; line-height: 1.2; margin-bottom: 24px; letter-spacing: -0.03em; color: var(--gray-900); }
.hero h1 span { background: var(--blue-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.15rem; color: var(--gray-500); margin: 0 0 40px; line-height: 1.8; max-width: 600px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { position: relative; z-index: 2; display: flex; justify-content: center; gap: 64px; padding: 24px 0 0; border-top: none; width: 100%; }
.stat-item { text-align: center; }
.stat-number { font-size: 2.5rem; font-weight: 800; color: #D4AF37; line-height: 1; margin-bottom: 8px; }
.stat-label { font-size: 0.95rem; color: var(--gray-500); font-weight: 500; }

/* About */
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); background: var(--gray-100); min-height: 350px; display: flex; align-items: center; justify-content: center; color: var(--gray-500); font-weight: 600; }
.about-img img { width: 100%; height: 350px; object-fit: cover; }
.about-text h3 { font-size: 1.75rem; font-weight: 700; margin-bottom: 20px; }
.about-text p { color: var(--gray-700); margin-bottom: 16px; line-height: 1.8; }
.cert-mini-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 32px; }
.cert-mini { padding: 20px; background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius); transition: var(--transition); }
.cert-mini:hover { border-color: var(--blue-primary); box-shadow: var(--shadow-md); }
.cert-mini h4 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; color: var(--blue-primary); }
.cert-mini p { font-size: 0.85rem; color: var(--gray-500); margin: 0; }

/* Products */
.product-mini-card a { text-decoration: none; color: inherit; display: block; }

/* 产品卡片 - 统一与 products.html 一致 */
.product-mini-card { background: var(--white); border: 1px solid #F0F0F0; border-radius: var(--radius); overflow: hidden; transition: var(--transition); cursor: pointer; position: relative; display: flex; flex-direction: column; }
.product-mini-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--blue-primary); }

.product-mini-img { height: 240px; overflow: hidden; position: relative; background: var(--gray-50); flex-shrink: 0; }
.product-mini-img img, .product-mini-img svg { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.product-mini-card:hover .product-mini-img img, .product-mini-card:hover .product-mini-img svg { transform: scale(1.05); }

.product-mini-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-mini-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--gray-900); }
.product-mini-body p { font-size: 0.85rem; color: var(--gray-500); line-height: 1.6; margin-bottom: 0; flex: 1; }

/* 产品类型 badge */
.product-type-badge { position: absolute; top: 12px; right: 12px; padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; z-index: 1; }
.product-type-badge.hv { background: rgba(30, 58, 138, 0.9); color: white; }
.product-type-badge.lv { background: rgba(0, 102, 255, 0.9); color: white; }
.product-type-badge.comm { background: rgba(8, 145, 178, 0.9); color: white; }
.product-type-badge.power { background: rgba(16, 185, 129, 0.9); color: white; }
.product-type-badge.special { background: rgba(234, 88, 12, 0.9); color: white; }
.product-type-badge.case { background: rgba(0, 102, 255, 0.9); color: white; }

.products-mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

/* Cases - 统一与 cases.html 一致 */
.case-data-card {
  background: var(--white);
  color: var(--gray-900);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  text-decoration: none;
}
.case-data-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-primary);
}

/* 行业顶部色条 - 4px 高 */
.case-data-card[data-industry="电力"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #2563EB;
  z-index: 1;
}
.case-data-card[data-industry="轨道交通"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #7C3AED;
  z-index: 1;
}
.case-data-card[data-industry="冶金"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #D97706;
  z-index: 1;
}

.case-data-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 20px 24px 0 24px;
  margin-bottom: 12px;
}
.case-data-client {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 102, 255, 0.08);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--blue-primary);
  letter-spacing: 0.05em;
}
.case-data-project h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 4px;
}
.case-data-project p {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin: 0;
}
.case-data-stats {
  text-align: right;
}
.case-data-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--blue-primary);
  line-height: 1;
}
.case-data-label {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 4px;
}
.case-data-tags {
  display: flex;
  gap: 8px;
  padding: 0 24px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.case-data-tag {
  padding: 4px 12px;
  background: var(--gray-100);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--gray-700);
  font-weight: 500;
}
.case-data-footer {
  padding: 16px 24px 20px 24px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue-primary);
  opacity: 0.7;
  border-top: 1px solid var(--gray-100);
}
.case-data-card:hover .case-data-footer {
  opacity: 1;
}

/* Solutions - 统一与 solutions.html 一致 */
.solution-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 320px;
  position: relative;
}
.solution-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--blue-primary);
}
.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  z-index: 1;
}
.solution-card.power::before { background: linear-gradient(90deg, var(--blue-primary), var(--blue-light)); }
.solution-card.comm::before { background: linear-gradient(90deg, var(--cyan-accent), #00E5FF); }
.solution-card.metal::before { background: linear-gradient(90deg, var(--gold), var(--gold-light)); }
.solution-card.rail::before { background: linear-gradient(90deg, var(--purple), #A78BFA); }
.solution-card.energy::before { background: linear-gradient(90deg, var(--green), #34D399); }
/* Products Grid */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

/* Product Card */
.product-card { background: var(--white); border: 1px solid #F0F0F0; border-radius: var(--radius); overflow: hidden; transition: var(--transition); cursor: pointer; position: relative; display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--blue-primary); }

.product-img { height: 240px; overflow: hidden; position: relative; background: var(--gray-50); flex-shrink: 0; }
.product-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.4) 100%);
  pointer-events: none;
  z-index: 1;
}
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.product-card:hover .product-img img { transform: scale(1.05); }

.product-info { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-info h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--gray-900); }
.product-info p { font-size: 0.85rem; color: var(--gray-500); line-height: 1.6; margin-bottom: 0; }

/* Cases Grid */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* Case Cards - 项目铭牌风格 */
.case-card {
  background: #F8FAFC;
  color: var(--gray-900);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  text-decoration: none;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 102, 255, 0.3);
}

/* 行业顶部色条 - 4px 高 */
.case-card[data-industry="电力"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #2563EB;
  z-index: 1;
}
.case-card[data-industry="通信"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #0891B2;
  z-index: 1;
}
.case-card[data-industry="冶金"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #D97706;
  z-index: 1;
}
.case-card[data-industry="能源"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #059669;
  z-index: 1;
}
.case-card[data-industry="轨道交通"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #7C3AED;
  z-index: 1;
}

/* 客户名称 - 品牌蓝色 pill 标签 */
.case-client {
  display: inline-block;
  margin: 16px 24px 0 24px;
  padding: 4px 12px;
  background: rgba(0, 102, 255, 0.08);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--blue-primary);
  letter-spacing: 0.05em;
  text-align: center;
}

/* 项目名称 - 中间放大居中 */
.case-project {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 24px;
}
.case-project h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.case-project .case-divider {
  width: 48px;
  height: 1px;
  background: var(--gray-300);
  margin: 16px 0;
}
.case-project .case-desc {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* 产品标签 */
.case-products {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  font-size: 0.8rem;
  color: var(--gray-700);
  text-align: center;
}

/* 查看详情 */
.case-action {
  display: block;
  text-align: center;
  padding: 16px 24px 20px 24px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue-primary);
  opacity: 0.7;
  transition: var(--transition);
  letter-spacing: 0.05em;
}
.case-card:hover .case-action {
  opacity: 1;
}

/* Solutions Grid */
.solutions-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }

/* 解决方案卡片 */
.solutions-grid .solution-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 400px;
}
.solutions-grid .solution-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--blue-primary);
}
.solution-card-body {
  padding: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.solution-icon {
  width: 64px;
  height: 64px;
  background: var(--gray-50);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.solution-icon svg {
  width: 36px;
  height: 36px;
}
.solution-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--gray-900);
}
.solutions-grid .solution-card .product-tag {
  padding: 6px 12px;
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  border-radius: 50px;
  font-size: 0.8rem;
}
.solutions-grid .solution-card .solution-cases li {
  font-size: 0.9rem;
}

/* 代表案例 */
.solution-cases { margin-bottom: 24px; flex: 1; }
.solution-cases ul { margin: 0; padding: 0; list-style: none; }
.solution-cases li { font-size: 0.9rem; color: var(--gray-600); padding: 4px 0 4px 16px; position: relative; line-height: 1.6; }
.solution-cases li::before { content: '·'; position: absolute; left: 0; color: var(--blue-primary); font-weight: 700; }

/* 适用产品 Pill 标签 */
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.product-tag { padding: 6px 14px; background: var(--gray-100); color: var(--gray-700); border-radius: 50px; font-size: 0.8rem; font-weight: 500; border: 1px solid var(--gray-200); }

/* Responsive */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .products-grid, .cases-grid, .solutions-grid { grid-template-columns: 1fr; }
}


.solution-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.solution-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--gray-900); }
.solution-position { font-size: 0.9rem; color: var(--blue-primary); font-weight: 600; margin-bottom: 16px; line-height: 1.6; }
.solution-card .product-tag { padding: 6px 12px; background: var(--gray-100); color: var(--gray-700); border-radius: 50px; font-size: 0.8rem; font-weight: 500; border: 1px solid var(--gray-200); }
.solution-card .solution-cta { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--gray-100); }
.solution-cta-link { display: inline-flex; align-items: center; gap: 4px; font-size: 0.9rem; font-weight: 600; color: var(--blue-primary); text-decoration: none; transition: var(--transition); }
.solution-cta-link::after { content: '→'; font-size: 1rem; }
.solution-cta-link:hover { color: var(--blue-light); }
.solution-cta-link:hover::after { transform: translateX(4px); }

.ai-section { background: var(--blue-gradient); border-radius: var(--radius-lg); padding: 80px 60px; position: relative; overflow: hidden; }
.ai-section::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1), transparent); }
.ai-section h2 { font-size: 2.25rem; font-weight: 800; color: var(--white); margin-bottom: 56px; text-align: center; position: relative; }
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.ai-card { background: rgba(255,255,255,0.1); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius-lg); padding: 40px 32px; text-align: center; transition: var(--transition); }
.ai-card:hover { background: rgba(255,255,255,0.15); transform: translateY(-4px); }
.ai-icon { font-size: 3rem; margin-bottom: 20px; }
.ai-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--white); margin-bottom: 12px; }
.ai-card p { font-size: 0.95rem; color: rgba(255,255,255,0.85); line-height: 1.7; }

/* CTA */
.cta-section { background: #F8FAFC; border-radius: var(--radius-lg); padding: 80px 60px; text-align: center; }
.cta-section h2 { font-size: 2.25rem; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 1.1rem; color: var(--gray-500); margin-bottom: 32px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 14px 36px; border-radius: var(--radius-btn); font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: var(--transition); border: none; }
.btn-primary { background: var(--blue-primary); color: var(--white); }
.btn-primary:hover { background: var(--blue-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,102,255,0.3); }
.btn-gold { background: linear-gradient(135deg, #D4AF37, #F59E0B); color: var(--white); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,175,55,0.35); }
.btn-outline { background: var(--white); color: var(--blue-primary); border: 2px solid var(--blue-primary); }
.btn-outline:hover { background: var(--blue-primary); color: var(--white); }

/* Footer */
.footer { background: var(--gray-900); color: var(--gray-300); padding: 60px 0 30px; border-top: 1px solid #E2E8F0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer h4 { color: var(--white); font-size: 1rem; font-weight: 700; margin-bottom: 20px; }
.footer p, .footer li { font-size: 0.9rem; line-height: 1.8; margin-bottom: 8px; }
.footer a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 0.85rem; }
.footer-lang { justify-content: center; margin-top: 12px; border-left: none; padding-left: 0; }
.footer-lang .lang-link { color: rgba(255,255,255,0.6); }
.footer-lang .lang-link:hover { color: #FFF; background: rgba(255,255,255,0.1); }
.footer-lang .lang-link.active { color: #FFF; background: var(--blue-primary); }

/* Animations */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 1024px) {
  .hero-visual { display: none; }
  .hero .container { justify-content: center; text-align: center; }
  .hero-content { max-width: 100%; }
  .products-mini-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .cta-form { flex-direction: column; align-items: stretch; }
  .cta-form input, .cta-form select { min-width: unset; }
}
@media (max-width: 768px) {
  /* 导航栏移动端 */
  .nav-links { display: none !important; }
  .nav-toggle { display: block; }
  .nav-links.show { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: white; padding: 24px; box-shadow: var(--shadow-md); gap: 16px; }
  
  /* Hero 移动端优化 */
  .hero { min-height: auto; padding: 40px 0; }
  .hero .container { flex-direction: column; padding: 100px 16px 40px; gap: 24px; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .stat-number { font-size: 2rem; }
  
  /* 客户 Logo 条移动端 */
  .hero > div:last-child .container { padding: 24px 16px; }
  
  /* 关于我们移动端 */
  .about-content { grid-template-columns: 1fr; }
  .about-img { min-height: 250px; }
  
  /* 产品卡片移动端 */
  .products-mini-grid { grid-template-columns: 1fr; }
  .product-mini-body { padding: 20px; }
  
  /* AI 技术优势移动端 */
  .ai-grid { grid-template-columns: 1fr; }
  .ai-section { padding: 60px 16px !important; }
  
  /* 移动端统计数字 */
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  
  /* 页脚移动端 */
  .footer-grid { grid-template-columns: 1fr; }
  
  /* 通用 */
  .section { padding: 60px 16px; }
  .cta-section, .ai-section { padding: 60px 16px; }
  
  /* CTA 表单移动端 */
  .cta-form { flex-direction: column; }
  .cta-form input, .cta-form select { width: 100%; min-width: unset; }
  
  /* 悬浮按钮移动端 */
  .onlineConsult { bottom: 20px !important; right: 16px !important; padding: 10px 16px !important; font-size: 0.85rem !important; }
  #backToTop { bottom: 70px !important; right: 16px !important; width: 40px !important; height: 40px !important; font-size: 1rem !important; }
}
/* 移除所有链接和标题的 focus outline */
a:focus, a:focus:hover, h4:focus, h4:focus:hover { outline: none !important; }


/* ===== Hugo 站点新增组件 ===== */
.article-content { font-size: 1rem; line-height: 1.9; color: var(--gray-700); }
.article-content h3 { font-size: 1.25rem; font-weight: 700; margin: 32px 0 12px; color: var(--gray-900); }
.article-content p { margin-bottom: 16px; }
.article-content ul { list-style: disc; padding-left: 24px; margin-bottom: 16px; }
.article-content li { margin-bottom: 8px; }
.article-content strong { color: var(--gray-900); }
.article-nav { display: flex; justify-content: space-between; gap: 24px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--gray-200); flex-wrap: wrap; }
.article-nav-item { font-size: 0.9rem; font-weight: 600; color: var(--blue-primary); }
.article-nav-item:hover { color: var(--blue-light); }