/* ============================================================
   盛鑫泽科技官网 - 全局样式
   设计风格：深色工业风，荧光绿主色调
   ============================================================ */

/* ---------- CSS变量 ---------- */
:root {
  --primary: #00e676;
  --primary-dark: #00c853;
  --primary-glow: rgba(0, 230, 118, 0.15);
  --bg-dark: #0a0c0f;
  --bg-card: #111418;
  --bg-card2: #161b22;
  --border: rgba(0, 230, 118, 0.2);
  --border-subtle: rgba(255,255,255,0.06);
  --text-white: #f0f4f8;
  --text-gray: #8b9ab0;
  --text-muted: #5a6a7e;
  --nav-height: 72px;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 3px; }

/* ---------- 通用工具类 ---------- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  border: 1px solid var(--border);
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: var(--primary-glow);
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  letter-spacing: 0.5px;
}
.btn-primary {
  background: var(--primary);
  color: #0a0c0f;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,230,118,0.35);
}
.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary-glow);
  transform: translateY(-2px);
}
.btn-ghost {
  color: var(--text-gray);
  border: 1px solid var(--border-subtle);
}
.btn-ghost:hover {
  color: var(--primary);
  border-color: var(--border);
  background: var(--primary-glow);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover {
  border-color: var(--border);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5), 0 0 0 1px var(--border);
}

/* ---------- 标签筛选 ---------- */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-tab {
  padding: 8px 20px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  color: var(--text-gray);
  background: transparent;
  transition: var(--transition);
}
.filter-tab:hover, .filter-tab.active {
  background: var(--primary-glow);
  border-color: var(--primary);
  color: var(--primary);
}

/* ---------- 网格 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* ---------- 分隔线 ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0;
}

/* ---------- 徽章 ---------- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}
.badge-green { background: var(--primary-glow); color: var(--primary); border: 1px solid var(--border); }
.badge-blue { background: rgba(33,150,243,0.1); color: #64b5f6; border: 1px solid rgba(33,150,243,0.2); }
.badge-orange { background: rgba(255,152,0,0.1); color: #ffb74d; border: 1px solid rgba(255,152,0,0.2); }

/* ---------- 数字统计 ---------- */
.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.stat-unit { font-size: 24px; }
.stat-label { font-size: 14px; color: var(--text-gray); margin-top: 8px; }

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(10, 12, 15, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  color: #0a0c0f;
  flex-shrink: 0;
}
.logo-icon-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 6px;
  background: transparent;
}
.logo-text { display: flex; flex-direction: column; }
.logo-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.2;
  white-space: nowrap;
}
.logo-en {
  font-size: 10px;
  color: var(--primary);
  letter-spacing: 2px;
  font-weight: 500;
}
.navbar-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-gray);
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-glow);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
}
.navbar-hotline {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--primary-glow);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}
.navbar-hotline svg { flex-shrink: 0; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: rgba(10,12,15,0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 24px 24px;
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-nav-link {
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-gray);
  border-radius: var(--radius);
  transition: var(--transition);
}
.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--primary);
  background: var(--primary-glow);
}

/* ---------- 页脚 ---------- */
.footer {
  background: #070a0d;
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo-name { font-size: 18px; }
.footer-desc {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.8;
  margin-top: 16px;
  max-width: 280px;
}
.footer-qrcode {
  margin-top: 24px;
}
.footer-qrcode img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}
.footer-qrcode-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
  text-align: center;
}
.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-link {
  font-size: 13px;
  color: var(--text-gray);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.footer-link:hover { color: var(--primary); }
.footer-link::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--text-muted);
  border-radius: 50%;
  flex-shrink: 0;
  transition: var(--transition);
}
.footer-link:hover::before { background: var(--primary); }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-contact-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-glow);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.footer-contact-text { font-size: 13px; }
.footer-contact-label { color: var(--text-muted); font-size: 11px; margin-bottom: 2px; }
.footer-contact-value { color: var(--text-white); }
.footer-contact-value.highlight { color: var(--primary); font-weight: 600; font-size: 15px; }
.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copyright { font-size: 13px; color: var(--text-muted); }
.footer-icp { font-size: 13px; color: var(--text-muted); }
.footer-icp a { color: var(--text-muted); transition: var(--transition); }
.footer-icp a:hover { color: var(--primary); }

/* ---------- 页面Hero ---------- */
.page-hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #0a0c0f 0%, #0d1520 50%, #0a0c0f 100%);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,230,118,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}
.page-hero-subtitle {
  font-size: 18px;
  color: var(--text-gray);
  max-width: 560px;
  line-height: 1.7;
}
.page-hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.page-hero-breadcrumb a { color: var(--text-muted); transition: var(--transition); }
.page-hero-breadcrumb a:hover { color: var(--primary); }
.page-hero-breadcrumb span { color: var(--primary); }

/* ---------- 产品卡片 ---------- */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  border-color: var(--border);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,230,118,0.15);
}
.product-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--bg-card2);
}
.product-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-card-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.product-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
  line-height: 1.3;
}
.product-card-desc {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}
.product-card-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.product-card-link:hover { gap: 8px; }

/* ---------- 解决方案卡片 ---------- */
.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.solution-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: var(--transition);
}
.solution-card:hover {
  border-color: var(--border);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.solution-card:hover::before { opacity: 1; }
.solution-icon {
  width: 52px;
  height: 52px;
  background: var(--primary-glow);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
}
.solution-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}
.solution-card-desc {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.7;
  margin-bottom: 16px;
}
.solution-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.solution-tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

/* ---------- 案例卡片 ---------- */
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.case-card:hover {
  border-color: var(--border);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.case-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--bg-card2);
}
.case-card-body { padding: 20px; }
.case-card-industry {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.case-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
  line-height: 1.4;
}
.case-card-desc {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 资质卡片 ---------- */
.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}
.cert-card:hover {
  border-color: var(--border);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.cert-card-img {
  width: 100%;
  height: 180px;
  object-fit: contain;
  border-radius: 8px;
  margin-bottom: 12px;
  background: #fff;
  padding: 8px;
}
.cert-card-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.4;
}

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(20px);
  transition: transform 0.3s ease;
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-subtle);
}
.modal-title { font-size: 20px; font-weight: 700; }
.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  font-size: 20px;
  transition: var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,0.1); color: var(--text-white); }
.modal-body { padding: 28px; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-gray);
  margin-bottom: 8px;
}
.form-label .required { color: var(--primary); margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-white);
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-select { appearance: none; cursor: pointer; }
.form-textarea { resize: vertical; min-height: 120px; }

/* ---------- 进入动画 ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .navbar-menu, .navbar-hotline { display: none; }
  .hamburger { display: flex; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .page-hero { padding: 120px 0 60px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section-title { font-size: 26px; }
}