/* ============================================
   郑州优美智能科技有限公司 - 官网样式表
   主题: 现代科技蓝
   ============================================ */

/* --- CSS Variables --- */
:root {
  --primary: #1a73e8;
  --primary-dark: #0d47a1;
  --primary-light: #4fc3f7;
  --accent: #00bcd4;
  --accent-dark: #0097a7;
  --dark: #0a1929;
  --dark-2: #132f4c;
  --text: #1a2027;
  --text-light: #5a6a7a;
  --bg: #ffffff;
  --bg-alt: #f0f4f8;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1200px;
  --header-h: 80px;
  --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* --- Section Headers --- */
.section-header {
  text-align: center;
  padding: 60px 0 40px;
}
.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  position: relative;
  display: inline-block;
}
.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  margin: 12px auto 0;
  border-radius: 2px;
}
.section-header p {
  color: var(--text-light);
  font-size: 1rem;
  margin-top: 12px;
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
  transition: box-shadow 0.3s;
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.logo a { display: flex; align-items: center; }
.logo img {
  height: 48px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(10,25,41,0.12));
  transition: filter 0.3s ease, transform 0.3s ease;
}
.logo a:hover img {
  filter: drop-shadow(0 4px 12px rgba(26,115,232,0.28));
  transform: scale(1.02);
}

/* Desktop Nav */
.nav { display: flex; align-items: center; }
.nav > ul { display: flex; gap: 4px; }
.nav > ul > li { position: relative; }
.nav > ul > li > a {
  display: flex;
  align-items: center;
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: all 0.25s;
  white-space: nowrap;
}
.nav > ul > li > a:hover,
.nav > ul > li.active > a {
  color: var(--primary);
  background: rgba(26,115,232,0.08);
}
.nav > ul > li > a .arrow { font-size: 0.7rem; margin-left: 4px; transition: transform 0.25s; }

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s;
  padding: 8px 0;
}
.nav > ul > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}
.dropdown li a {
  display: block;
  padding: 8px 20px;
  font-size: 0.9rem;
  color: var(--text-light);
  transition: all 0.2s;
}
.dropdown li a:hover { color: var(--primary); background: rgba(26,115,232,0.06); }

/* Search */
.search-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 8px 12px;
  color: var(--text-light);
  transition: color 0.2s;
}
.search-btn:hover { color: var(--primary); }

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ============================================
   HERO / BANNER
   ============================================ */
.hero {
  margin-top: var(--header-h);
  position: relative;
  overflow: hidden;
  height: 560px;
}
.hero-slider { position: relative; height: 100%; }
.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  align-items: center;
}
.hero-slide.active { opacity: 1; }
.hero-slide .bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
}
.hero-slide .overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(10,25,41,0.85) 0%, rgba(26,115,232,0.4) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
.hero-content h1 {
  font-size: 3rem;
  font-weight: 800;
  color: white;
  line-height: 1.15;
  max-width: 640px;
}
.hero-content p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  margin-top: 16px;
  max-width: 520px;
  line-height: 1.7;
}
.hero-content .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  padding: 14px 36px;
  background: var(--primary);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}
.hero-content .btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26,115,232,0.35);
}

/* Hero Dots */
.hero-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}
.hero-dots button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.5);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s;
}
.hero-dots button.active {
  background: white;
  border-color: white;
  transform: scale(1.2);
}

/* ============================================
   SOLUTIONS SECTION
   ============================================ */
.solutions {
  padding: 0 0 60px;
  background: var(--bg-alt);
}
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 0 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.solution-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.35s;
  cursor: pointer;
  position: relative;
}
.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.solution-card .card-img {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
  overflow: hidden;
}
.solution-card .card-img svg { width: 80px; height: 80px; }
.solution-card:nth-child(1) .card-img { background: linear-gradient(135deg, #e3f2fd, #bbdefb); }
.solution-card:nth-child(2) .card-img { background: linear-gradient(135deg, #e8f5e9, #c8e6c9); }
.solution-card:nth-child(3) .card-img { background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.solution-card:nth-child(4) .card-img { background: linear-gradient(135deg, #f3e5f5, #e1bee7); }
.solution-card .card-body {
  padding: 24px;
  text-align: center;
}
.solution-card .card-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
}
.solution-card .card-body p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: 8px;
}
.solution-card .card-body .link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: gap 0.3s;
}
.solution-card:hover .card-body .link { gap: 10px; }

/* ============================================
   PRODUCTS SECTION
   ============================================ */
.products {
  padding: 0 0 60px;
}
.products-carousel {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px;
}
.products-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 12px 0 24px;
}
.products-track::-webkit-scrollbar { display: none; }
.product-card {
  flex: 0 0 calc(33.333% - 16px);
  scroll-snap-align: start;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.35s;
  border: 1px solid var(--border);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.product-card .card-img {
  height: 200px;
  background: linear-gradient(135deg, var(--bg-alt), #e8eaf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--primary);
}
.product-card .card-img svg { width: 64px; height: 64px; opacity: 0.7; }
.product-card .card-body {
  padding: 20px;
}
.product-card .card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-card .card-body p {
  font-size: 0.85rem;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
.product-card .card-body .more {
  display: inline-block;
  margin-top: 12px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: white;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: all 0.25s;
  z-index: 2;
  color: var(--text);
}
.carousel-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }
.carousel-btn.prev { left: 4px; }
.carousel-btn.next { right: 4px; }

/* ============================================
   CASES SECTION
   ============================================ */
.cases {
  padding: 0 0 60px;
  background: var(--bg-alt);
}
.cases-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.cases-tabs { display: flex; gap: 0; margin-bottom: 32px; border-bottom: 2px solid var(--border); }
.cases-tab {
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-light);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.25s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.cases-tab:hover { color: var(--primary); }
.cases-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.cases-grid.hidden { display: none; }
.case-item {
  background: white;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  overflow: hidden;
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
}
.case-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.case-item .pic {
  height: 100px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.case-item .pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.case-item:hover .pic img { transform: scale(1.05); }
.case-item .pic .ph {
  font-size: 1.7rem;
  color: var(--primary);
  font-weight: 700;
}
.case-item .name {
  padding: 10px 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ============================================
   NEWS SECTION
   ============================================ */
.news-section {
  padding: 0 0 60px;
}
.news-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.news-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.news-featured .featured-img {
  height: 340px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--primary);
  overflow: hidden;
}
.news-featured .featured-img img { width: 100%; height: 100%; object-fit: cover; }
.news-featured .featured-body { display: flex; flex-direction: column; justify-content: center; }
.news-featured .featured-body .date {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 8px;
}
.news-featured .featured-body h3 {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.4;
}
.news-featured .featured-body .desc {
  color: var(--text-light);
  margin-top: 12px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px;
  align-items: start;
  padding: 20px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  transition: all 0.25s;
  cursor: pointer;
}
.news-item:hover { background: #e3f2fd; }
.news-item .date-box {
  text-align: center;
  min-width: 64px;
}
.news-item .date-box .day {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.news-item .date-box .ym {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 4px;
}
.news-item .content h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item .content .desc {
  font-size: 0.85rem;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item .arrow-link {
  color: var(--primary);
  font-size: 1.3rem;
  font-weight: 300;
  align-self: center;
}
.news-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 32px auto 0;
  padding: 12px 32px;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s;
  justify-content: center;
  width: fit-content;
}
.news-more:hover { background: var(--primary); color: white; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: #1a2744;
  color: rgba(255,255,255,0.85);
  padding: 64px 0 0;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary-light));
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: white;
  position: relative;
  padding-bottom: 12px;
  letter-spacing: 0.5px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}
.footer-col .footer-logo {
  display: inline-block;
  margin-bottom: 20px;
  padding: 11px 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 12px;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.footer-col .footer-logo:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.24);
}
.footer-col .footer-logo img { height: 36px; width: auto; display: block; }
.footer-col .contact-info { margin-top: 4px; }
.footer-col .contact-info li {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
}
.footer-col .contact-info li:last-child { margin-bottom: 0; }
.footer-col .contact-info li .icon-wrap {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-col .contact-info li .icon-wrap img {
  width: 16px;
  height: 16px;
  opacity: 0.7;
  filter: brightness(0) invert(1);
}
.footer-col .contact-info li strong {
  display: block;
  color: white;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-top: 2px;
}
.footer-col ul li a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  transition: all 0.2s;
  display: block;
  padding: 5px 0;
}
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  margin-top: 48px;
  padding: 22px 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  background: rgba(0,0,0,0.15);
}
.footer-bottom a {
  color: rgba(255,255,255,0.55);
  transition: color 0.2s;
}
.footer-bottom a:hover { color: var(--primary-light); }
.footer-bottom .sep { margin: 0 12px; opacity: 0.2; }

/* ============================================
   PAGE BANNER (内页横幅)
   ============================================ */
.page-banner {
  margin-top: var(--header-h);
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-banner .bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
}
.page-banner .bg-pattern {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  opacity: 0.08;
  background-image:
    radial-gradient(circle at 20% 50%, white 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, white 1px, transparent 1px);
  background-size: 40px 40px;
}
.page-banner .content { position: relative; z-index: 2; }
.page-banner .content .overline {
  font-size: 0.78rem;
  letter-spacing: 8px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}
.page-banner .content h1 {
  font-size: 3rem;
  font-weight: 800;
  color: white;
  line-height: 1.15;
  letter-spacing: 3px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.3);
  margin-top: 8px;
  max-width: 720px;
}
.page-banner .content h1::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
  border-radius: 2px;
  margin: 22px 0 0;
}
.page-banner .breadcrumb {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.6);
}
.page-banner .breadcrumb a { color: rgba(255,255,255,0.6); transition: color 0.2s; }
.page-banner .breadcrumb a:hover { color: white; }
.page-banner .breadcrumb span { color: rgba(255,255,255,0.85); }

/* Left editorial variant */
.page-banner.left {
  justify-content: flex-start;
  text-align: left;
}
.page-banner.left .content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
/* Gradient scrim so title stays readable over the SVG, art shows on right */
.page-banner.left .bg::after {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 62%;
  background: linear-gradient(90deg, rgba(10,25,41,0.82) 0%, rgba(10,25,41,0.45) 55%, rgba(10,25,41,0) 100%);
  pointer-events: none;
}
@media (max-width: 768px) {
  .page-banner .content .overline { letter-spacing: 4px; }
  .page-banner .content h1 { font-size: 1.8rem; letter-spacing: 2px; }
  .page-banner .content h1::after { width: 50px; margin-top: 14px; }
  .page-banner.left .bg::after { width: 85%; }
}

/* ============================================
   SOLUTION CARDS (徽章式水平卡片)
   ============================================ */
.solution-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.solution-list .solution-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 26px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.35s;
}
.solution-list .solution-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s;
}
.solution-list .solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(26,115,232,0.3);
}
.solution-list .solution-card:hover::before { opacity: 1; }
.solution-list .solution-card .icon-box {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.6), 0 8px 20px -8px rgba(0,0,0,0.18);
}
.solution-list .solution-card .icon-box svg { width: 26px; height: 26px; }
.solution-list .solution-card .info h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.4;
}
.solution-list .solution-card .info p {
  font-size: 0.86rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-top: 8px;
}
.solution-list .solution-card .info .link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.86rem;
  transition: gap 0.3s;
}
.solution-list .solution-card:hover .info .link { gap: 10px; }
@media (max-width: 768px) { .solution-list { grid-template-columns: 1fr; } }

/* ============================================
   PATENT GRID (技术成果)
   ============================================ */
.patent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.patent-item {
  padding: 24px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all 0.3s;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.patent-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.patent-item .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  min-width: 40px;
}
.patent-item .info h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.patent-item .info p { font-size: 0.82rem; color: var(--text-light); }
@media (max-width: 768px) { .patent-grid { grid-template-columns: 1fr; } }

/* ============================================
   CERT GRID (资质证书相册)
   ============================================ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.cert-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s;
}
.cert-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(26,115,232,0.3);
}
.cert-item .pic {
  height: 200px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}
.cert-item:hover .pic { background: #f6f9fc; }
.cert-item .pic img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  transition: transform 0.3s;
}
.cert-item:hover .pic img { transform: scale(1.05); }
.cert-item .name {
  padding: 14px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  text-align: center;
  color: var(--dark);
  border-top: 1px solid var(--border);
}
@media (max-width: 1024px) { .cert-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .cert-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; } }
@media (max-width: 480px) { .cert-grid { grid-template-columns: 1fr; } }

/* ============================================
   NEWS DETAIL (新闻详情)
   ============================================ */
.news-detail {
  max-width: 860px;
  margin: 0 auto;
}
.news-detail h1 {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.45;
  text-align: center;
}
.news-detail .meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin: 16px 0 32px;
  font-size: 0.85rem;
  color: var(--text-light);
}
.news-detail .meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-detail .body {
  color: var(--text-light);
  line-height: 1.9;
  font-size: 0.98rem;
}
.news-detail .body p { margin-bottom: 16px; }
.news-detail .body img { max-width: 100%; height: auto; border-radius: 8px; margin: 8px 0; }
.news-detail .prev-next {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}
.news-detail .prev-next a { color: var(--text-light); transition: color 0.2s; }
.news-detail .prev-next a:hover { color: var(--primary); }
.news-detail .prev-next a .t { display: block; max-width: 380px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ============================================
   PAGINATION (分页)
   ============================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
}
.pagination a {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--text-light);
  background: white;
  transition: all 0.25s;
}
.pagination a:hover { color: var(--primary); border-color: var(--primary); }
.pagination a.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ============================================
   PAGE CONTENT (通用)
   ============================================ */
.page-content {
  padding: 60px 0;
}
.page-content.with-sidebar {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 24px;
}
.sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
}
.sidebar h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 8px;
}
.sidebar ul li a {
  display: block;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.sidebar ul li a:hover,
.sidebar ul li a.active {
  color: var(--primary);
  background: rgba(26,115,232,0.06);
}
.sidebar ul li a.active { font-weight: 600; }
.main-content {
  min-height: 400px;
}

/* About page */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-intro .image-area {
  height: 400px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--primary);
}
.about-intro .text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}
.about-intro .text p {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.stat-card {
  text-align: center;
  padding: 32px 20px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.stat-card .num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
}
.stat-card .num span { font-size: 1.2rem; }
.stat-card .label {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: 8px;
}

/* Culture grid */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.culture-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  transition: all 0.3s;
}
.culture-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.culture-item .icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.culture-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.culture-item p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* Service quality */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.service-card {
  padding: 28px 20px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.3s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-card .icon { font-size: 2.2rem; margin-bottom: 12px; }
.service-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.service-card p { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; }

/* History timeline */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}
.timeline-item {
  position: relative;
  padding: 0 0 32px 32px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: white;
  border: 3px solid var(--primary);
}
.timeline-item .year {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
}
.timeline-item .desc {
  margin-top: 8px;
  color: var(--text-light);
  font-size: 0.92rem;
}

/* Lists (Solution, Product, News list) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card-grid.hidden { display: none; }
.card-grid .card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all 0.35s;
}
.card-grid .card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-grid .card .card-img {
  height: 200px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--primary);
  overflow: hidden;
}
.card-grid .card .card-img img { width: 100%; height: 100%; object-fit: cover; }
.card-grid .card .card-body { padding: 20px; }
.card-grid .card .card-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.card-grid .card .card-body .brief {
  font-size: 0.85rem;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
.card-grid .card .card-body .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
}

/* Join page */
.job-list { display: flex; flex-direction: column; gap: 16px; }
.job-item {
  padding: 24px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  transition: all 0.3s;
}
.job-item:hover { box-shadow: var(--shadow-lg); }
.job-item .info h4 { font-size: 1.1rem; font-weight: 700; }
.job-item .info .meta { font-size: 0.85rem; color: var(--text-light); margin-top: 6px; }
.job-item .action {
  padding: 8px 24px;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 600;
  border-radius: 50px;
  font-size: 0.85rem;
  transition: all 0.3s;
  white-space: nowrap;
}
.job-item .action:hover { background: var(--primary); color: white; }

/* Contact page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info-list { display: flex; flex-direction: column; gap: 24px; }
.contact-info-list .item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-info-list .item .icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(26,115,232,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.contact-info-list .item .icon img { width: 24px; height: 24px; }
.contact-info-list .item .text h4 { font-size: 1rem; font-weight: 700; }
.contact-info-list .item .text p { font-size: 0.9rem; color: var(--text-light); margin-top: 4px; }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input,
.contact-form textarea {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font);
  background: white;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,115,232,0.1);
}
.contact-form textarea { resize: vertical; }
.contact-form .btn {
  padding: 14px 32px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
  width: fit-content;
}
.contact-form .btn:hover { background: var(--primary-dark); }
@media (max-width: 480px) {
  .contact-form .row2 { grid-template-columns: 1fr; }
  .contact-form .btn { width: 100%; }
}

/* Page content text styles */
.main-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--dark);
  margin: 40px 0 20px;
}
.main-content h2:first-child { margin-top: 0; }
.main-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin: 28px 0 16px;
}
.main-content p {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
  .footer-col:first-child { grid-column: 1 / -1; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .page-content.with-sidebar { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .menu-toggle { display: flex; }
  .nav > ul { display: none; }
  .nav.mobile-open > ul {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .nav > ul > li > a { padding: 12px 16px; }
  .dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    padding: 0 0 0 16px;
    display: none;
  }
  .nav.mobile-open .dropdown.show { display: block; }
  .nav > ul > li:hover .dropdown { transform: none; }

  .hero { height: 400px; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-content p { font-size: 1rem; }
  .hero-content .btn { padding: 12px 28px; font-size: 0.9rem; }

  .section-header { padding: 40px 0 28px; }
  .section-header h2 { font-size: 1.5rem; }

  .solutions-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .products-carousel { padding: 0 24px; }
  .product-card { flex: 0 0 calc(100% - 32px); }

  .cases-grid { grid-template-columns: repeat(3, 1fr); }
  .cases-tab { padding: 10px 16px; font-size: 0.85rem; }

  .news-featured { grid-template-columns: 1fr; }
  .news-featured .featured-img { height: 200px; }
  .news-item { grid-template-columns: 1fr; gap: 12px; }

  .footer-inner { grid-template-columns: 1fr 1fr; gap: 22px 24px; }
  .footer-col:first-child { grid-column: 1 / -1; }
  .footer { padding-top: 48px; }
  .footer-col h4 { margin-bottom: 14px; }
  .footer-col .footer-logo { margin-bottom: 16px; }
  .about-intro { grid-template-columns: 1fr; }
  .about-intro .image-area { height: 250px; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .stat-card { padding: 20px 12px; }
  .stat-card .num { font-size: 2rem; }

  .card-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }

  .page-banner { height: 200px; }
  .page-banner .content h1 { font-size: 1.8rem; }
  .page-banner .content .overline { letter-spacing: 4px; }
  .page-content { padding: 40px 0; }
  .page-content.with-sidebar { padding: 40px 24px; }
}

@media (max-width: 480px) {
  .hero { height: 340px; }
  .hero-content h1 { font-size: 1.5rem; }
  .solutions-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat-card .num { font-size: 1.6rem; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.animate-in { animation: fadeInUp 0.6s ease forwards; }
.animate-in-delay-1 { animation-delay: 0.1s; }
.animate-in-delay-2 { animation-delay: 0.2s; }
.animate-in-delay-3 { animation-delay: 0.3s; }

/* Tab content transition */
.tab-content { animation: fadeIn 0.3s ease; }