/* ============================================================
  河南雪霜实业有限公司 - 企业官网样式
  Henan Xueshuang Industrial Co., Ltd. - Corporate Website
  设计理念：扁平化 · 现代化 · 专业制冷设备制造商
============================================================ */

/* ========== CSS Variables ========== */
:root {
  /* 主色调 - 青韵（制冷/冷链行业属性），红色点缀呼应Logo */
  --color-primary: #0D9488;
  --color-primary-dark: #0F766E;
  --color-primary-light: #14B8A6;
  --color-primary-lighter: #99F6E4;
  --color-primary-bg: #F0FDFA;

  /* 强调色 - 暖橙（烘焙/食品关联） */
  --color-accent: #F59E0B;
  --color-accent-dark: #D97706;
  --color-accent-light: #FDE68A;
  --color-accent-bg: #FFF7ED;

  /* 中性色 */
  --color-dark: #1E293B;
  --color-dark-secondary: #334155;
  --color-gray: #64748B;
  --color-gray-light: #94A3B8;
  --color-border: #E2E8F0;
  --color-bg: #F8FAFC;
  --color-white: #FFFFFF;

  /* 功能色 */
  --color-success: #10B981;
  --color-error: #EF4444;
  --color-info: #3B82F6;

  /* 字体 */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* 容器 */
  --container-max: 1280px;
  --container-padding: 1.5rem;

  /* 导航栏高度 */
  --header-height: 72px;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-dark-secondary);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-dark);
  line-height: 1.3;
  font-weight: 600;
}

/* ========== Utility Classes ========== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section-sm {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-header .section-tag {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-sm);
  position: relative;
  padding-left: 28px;
}

.section-header .section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.section-header .section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-dark);
}

.section-header .section-desc {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  max-width: 600px;
  margin: 0 auto;
}

.section-bg {
  background: var(--color-bg);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn-white:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: 8px 20px;
  font-size: var(--font-size-sm);
}

/* ========== Header / Navigation ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: 0 1px 0 var(--color-border);
  transition: box-shadow var(--transition-base);
  height: var(--header-height);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1340px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  flex-shrink: 0;
}

.logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 20px;
  font-weight: 800;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav > li {
  position: relative;
}

.main-nav > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 16px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.main-nav > li > a:hover,
.main-nav > li.active > a {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.main-nav > li > a .nav-arrow {
  font-size: 12px;
  margin-left: 2px;
  transition: transform var(--transition-fast);
  opacity: 0.45;
}

.main-nav > li:hover > a .nav-arrow {
  transform: rotate(180deg);
}

/* Language Switch */
.header-lang a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-dark-secondary);
  border: none;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.header-lang a:hover {
  color: var(--color-primary);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-md);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
  z-index: 999;
}

.main-nav > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}

.dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-dark-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.dropdown a:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  padding-left: 20px;
}

.dropdown .dropdown-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-gray-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 8px 16px 4px;
  cursor: default;
}

.dropdown .dropdown-label:hover {
  background: none;
  color: var(--color-gray-light);
  padding-left: 16px;
}

/* 多列下拉 */
.dropdown-wide {
  display: flex;
  gap: var(--spacing-md);
  min-width: 560px;
  padding: var(--spacing-lg);
}

.dropdown-column {
  flex: 1;
  min-width: 160px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  white-space: nowrap;
}

.header-phone strong {
  color: var(--color-primary);
  font-size: var(--font-size-base);
  font-weight: 700;
}

.header-phone .fas {
  color: var(--color-primary);
  font-size: 16px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ========== Mobile Nav ========== */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1001;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100vh;
  background: var(--color-white);
  z-index: 1002;
  overflow-y: auto;
  transition: right var(--transition-base);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-close {
  font-size: 24px;
  color: var(--color-gray);
  padding: 4px;
}

.mobile-nav-footer {
  margin-top: auto;
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.mobile-nav-footer p {
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

.mobile-nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.mobile-nav-phone:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.mobile-nav-list > li {
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-list > li > a,
.mobile-nav-list > li > .mobile-sub-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-dark);
}

.mobile-sub-toggle {
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.mobile-sub {
  display: none;
  padding-left: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.mobile-sub.open {
  display: block;
}

.mobile-sub a {
  display: block;
  padding: 10px 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

/* ========== Hero Banner ========== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0F766E 0%, #0D9488 40%, #14B8A6 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5v50M5 30h50' stroke='rgba(255,255,255,0.05)' stroke-width='0.5'/%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
  background: var(--color-white);
}

.hero-shape-1 {
  width: 600px;
  height: 600px;
  top: -200px;
  right: -150px;
}

.hero-shape-2 {
  width: 400px;
  height: 400px;
  bottom: -100px;
  left: -100px;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  width: 100%;
}

.hero-content {
  color: var(--color-white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: #34D399;
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-content h1 {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: var(--spacing-lg);
}

.hero-content h1 .highlight {
  color: var(--color-accent-light);
}

.hero-content p {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.85);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero-stat h3 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-white);
}

.hero-stat p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.7);
  margin: 0;
}

.hero-image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image-placeholder {
  width: 100%;
  max-width: 550px;
  aspect-ratio: 4/3;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255,255,255,0.4);
  backdrop-filter: blur(10px);
}

.hero-image-icon {
  font-size: 80px;
  margin-bottom: var(--spacing-lg);
  opacity: 0.6;
}

.hero-image-text {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.5);
}

.hero-image-cards {
  position: absolute;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  animation: float 3s ease-in-out infinite;
}

.hero-image-cards.card-1 {
  top: 10%;
  right: 5%;
  animation-delay: 0s;
}

.hero-image-cards.card-2 {
  bottom: 20%;
  left: 0%;
  animation-delay: 1.5s;
}

.hero-image-cards .card-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ========== Features Strip ========== */
.features-strip {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
}

.features-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: var(--spacing-md);
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.feature-icon-box.teal { background: var(--color-primary-bg); color: var(--color-primary); }
.feature-icon-box.amber { background: var(--color-accent-bg); color: var(--color-accent); }
.feature-icon-box.blue { background: #EFF6FF; color: #3B82F6; }
.feature-icon-box.green { background: #F0FDF4; color: #10B981; }

.feature-text h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 2px;
}

.feature-text p {
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
  line-height: 1.4;
}

/* ========== Product Cards ========== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-lighter);
}

.product-card-image {
  width: 100%;
  aspect-ratio: 6/4;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-card-image .product-icon {
  font-size: 56px;
  opacity: 0.3;
  transition: all var(--transition-base);
}

.product-card:hover .product-card-image .product-icon {
  opacity: 0.4;
  transform: scale(1.1);
}
.product-card-image a{display:block;}
.product-card-image img{ min-height: 258px;}

.product-card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.product-card-body {
  padding: var(--spacing-lg);
}

.product-card-body h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.product-card-body p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--spacing-md);
	font-size: var(--font-size-xs);
	color: var(--color-gray);
}


.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.product-card-link:hover {
  gap: 8px;
}

/* ========== Category Tabs ========== */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.category-tab {
  padding: 10px 24px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-tab:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.category-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ========== Solution Cards ========== */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.solution-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  display: flex;
  gap: var(--spacing-xl);
  cursor: pointer;
}

.solution-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-lighter);
  transform: translateY(-2px);
}

.solution-card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.solution-card-icon.teal { background: var(--color-primary-bg); color: var(--color-primary); }
.solution-card-icon.amber { background: var(--color-accent-bg); color: var(--color-accent); }
.solution-card-icon.blue { background: #EFF6FF; color: #3B82F6; }
.solution-card-icon.green { background: #F0FDF4; color: #10B981; }

.solution-card-content h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.solution-card-content p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.solution-card-content ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.solution-card-content ul li {
  padding: 3px 10px;
  background: var(--color-bg);
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  border-radius: var(--radius-full);
}

/* ========== Case Cards ========== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.case-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  cursor: pointer;
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.case-card-image {
  width: 100%;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--color-bg), var(--color-primary-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.case-card-image .case-icon {
  font-size: 48px;
  opacity: 0.25;
}
.case-card-image a{display:block;}
.case-card-image img{width: 100%;  height: 100%;min-height: 270px;  object-fit: cover;  }

.case-card-category {
  position: absolute;
  bottom: 12px;
  left: 12px;
  padding: 4px 12px;
  background: rgba(0,0,0,0.6);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  backdrop-filter: blur(4px);
}

.case-card-body {
  padding: var(--spacing-lg);
}

.case-card-body h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.case-card-body p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.5;
}

/* ========== About Section ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image-main {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-primary-lighter));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.about-image-main .about-icon {
  font-size: 80px;
  opacity: 0.2;
}

.about-image-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--color-white);
  padding: var(--spacing-lg) var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.about-image-badge h3 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-primary);
}

.about-image-badge p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

.about-content h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.about-content .about-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.about-content p {
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.about-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.about-stat-box {
  text-align: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.about-stat-box h3 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-primary);
  white-space: nowrap;
}

.about-stat-box p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin: 4px 0 0;
  white-space: nowrap;
}

/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-4xl) 0;
}

.cta-section h2 {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== News Cards ========== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.news-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.news-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.news-card-image {
  width: 100%;
  aspect-ratio: 6/4;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  
overflow: hidden;
}

.news-card-image .news-icon {
  font-size: 40px;
  opacity: 0.25;
}

.news-card-body {
  padding: var(--spacing-lg);
}

.news-card-date {
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-sm);
}

.news-card-body h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  line-height: 1.5;
}

.news-card-body p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========== Contact Section ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-3xl);
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-info-item {
  display: flex;
  gap: 16px;
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.contact-info-item:hover {
  background: var(--color-primary-bg);
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.contact-info-text h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-info-text p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.5;
}

.contact-form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
}

.contact-form h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--spacing-md);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
}

.form-group label .required {
  color: var(--color-error);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  background: var(--color-bg);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
  background: var(--color-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========== Solution Carousel ========== */
.solution-carousel {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
}

.solution-carousel .carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
}

.solution-carousel .carousel-slide {
  min-width: 100%;
  height: 100%;
}

.solution-carousel .carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-dots {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
}

.carousel-dot.active {
  background: var(--color-white);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  border: none;
  color: var(--color-dark-secondary);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  opacity: 0;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}

.carousel-arrow:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.solution-carousel:hover .carousel-arrow {
  opacity: 1;
}

.carousel-arrow-prev { left: 10px; }
.carousel-arrow-next { right: 10px; }

.carousel-counter {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(0,0,0,0.55);
  color: var(--color-white);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  z-index: 2;
}

/* ========== Form Submit Button ========== */
.form-submit-btn {
  width: 100%;
  max-width: 220px;
  display: block;
  margin: var(--spacing-lg) auto 0;
}

/* ========== Product Detail Page ========== */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
  margin-bottom: var(--spacing-3xl);
}

/* Product Gallery */
.product-gallery {
  position:relative;
  top:0px;
}

.gallery-carousel {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg);
  aspect-ratio: 4 / 3;
  margin-bottom: var(--spacing-md);
}

.gallery-carousel .carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
}

.gallery-carousel .carousel-slide {
  min-width: 100%;
  height: 100%;
}

.gallery-carousel .carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.gallery-carousel .carousel-arrow {
  opacity: 0;
}

.gallery-carousel:hover .carousel-arrow {
  opacity: 1;
}

.gallery-thumbs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0;
}

.gallery-thumb {
  flex-shrink: 0;
  width: 72px;
  height: 54px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  background: var(--color-bg);
  transition: border-color var(--transition-fast);
}

.gallery-thumb.active {
  border-color: var(--color-primary);
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Product Info */
.product-info-cat {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-sm);
}

.product-info h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.product-info-desc {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.spec-label {
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
}

.spec-value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
}

.product-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.product-contact-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-primary-lighter));
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-primary-bg);
}

.product-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.product-contact-item i {
  color: var(--color-primary);
  font-size: 18px;
  margin-top:5px;
}

.product-contact-item strong {
  font-size: var(--font-size-sm);
}

.product-contact-item p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin: 2px 0 0;
}

/* Product Tabs */
.product-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.product-tab {
  padding: 14px 28px;
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-gray-light);
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
}

.product-tab:hover {
  color: var(--color-primary);
}

.product-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.product-tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.product-tab-content.active {
  display: block;
}

.product-tab-content h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.product-tab-content h3:first-child {
  margin-top: 0;
}

.product-tab-content p {
  color: var(--color-dark-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.product-feature-list {
  list-style: none;
  margin: var(--spacing-md) 0;
}

.product-feature-list li {
  padding: 10px 0 10px 28px;
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--color-dark-secondary);
  line-height: 1.7;
  border-bottom: 1px solid var(--color-border);
}

.product-feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--color-primary);
  font-weight: 700;
}

.product-feature-list li:last-child {
  border-bottom: none;
}

/* Spec Table */
.product-spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.product-spec-table th,
.product-spec-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.product-spec-table th {
  background: var(--color-bg);
  font-weight: 600;
  color: var(--color-dark-secondary);
}

.product-spec-table tr:hover td {
  background: var(--color-primary-bg);
}

/* Custom Options Cards */
.custom-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.custom-option-card {
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.custom-option-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.custom-option-card i {
  font-size: 28px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.custom-option-card h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.custom-option-card p {
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  line-height: 1.6;
}

/* Product Bottom Nav */
.product-bottom-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (max-width: 768px) {
  .product-detail-layout {
    grid-template-columns: 1fr;
  }

  .product-gallery {
    position: static;
  }

  .product-specs {
    grid-template-columns: 1fr 1fr;
  }

  .product-actions {
    flex-direction: column;
  }

  .product-actions .btn {
    width: 100%;
  }

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

  .custom-options {
    grid-template-columns: 1fr;
  }

  .product-tab {
    padding: 12px 16px;
    font-size: var(--font-size-xs);
  }

  .product-bottom-nav {
    flex-direction: column;
    align-items: center;
  }
}

/* ========== Footer ========== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.6);
  padding-top: var(--spacing-4xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-col h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer-about p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary-light);
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.footer-contact-item .fi-icon {
  color: var(--color-primary-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-item strong {
  color: var(--color-white);
}

.footer-bottom {
  padding: var(--spacing-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.footer-bottom a {
  color: rgba(255,255,255,0.6);
}

.footer-bottom a:hover {
  color: var(--color-primary-light);
}

/* ========== Page Banner ========== */
.page-banner {
  background: url('../images/about_img.jpg') center/cover no-repeat;
  color: var(--color-white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.55), rgba(0,0,0,0.45));
  z-index: 1;
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.page-banner .breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.7);
}

.page-banner .breadcrumb a {
  color: rgba(255,255,255,0.8);
}

.page-banner .breadcrumb a:hover {
  color: var(--color-white);
}

.page-banner .breadcrumb .separator {
  opacity: 0.5;
}

/* ========== Service Flow ========== */
.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  position: relative;
}

.flow-steps::before {
  display: none;
}

.flow-step {
  text-align: center;
  position: relative;
  padding: var(--spacing-xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.flow-step:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-lighter);
  transform: translateY(-2px);
}

.flow-step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0 auto var(--spacing-md);
}

.flow-step h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.flow-step p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.6;
}

/* ========== Custom Service ========== */
.custom-service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.custom-service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--transition-base);
}

.custom-service-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-lighter);
  transform: translateY(-4px);
}

.custom-service-card .cs-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.custom-service-card .cs-icon.teal { background: var(--color-primary-bg); color: var(--color-primary); }
.custom-service-card .cs-icon.amber { background: var(--color-accent-bg); color: var(--color-accent); }
.custom-service-card .cs-icon.blue { background: #EFF6FF; color: #3B82F6; }
.custom-service-card .cs-icon.green { background: #F0FDF4; color: #10B981; }
.custom-service-card .cs-icon.purple { background: #F5F3FF; color: #8B5CF6; }
.custom-service-card .cs-icon.rose { background: #FFF1F2; color: #F43F5E; }

.custom-service-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.custom-service-card p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.6;
}

/* ========== FAQ Accordion ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  background: var(--color-white);
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--color-primary-lighter);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question .faq-icon {
  font-size: 20px;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--spacing-md);
}

.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
}

/* ========== News List ========== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.news-list-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--spacing-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.news-list-item:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-lighter);
  transform: translateY(-2px);
}

.news-list-item .news-thumb {
  width: 240px;
  aspect-ratio: 4/3;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.news-list-item .news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-list-item .news-thumb .thumb-icon {
  font-size: 40px;
  opacity: 0.25;
}

.news-list-item .news-body {
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-lg) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-list-item .news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
}

.news-list-item .news-cat-tag {
  padding: 2px 10px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.news-list-item .news-cat-tag.company { background: #EFF6FF; color: #3B82F6; }
.news-list-item .news-cat-tag.industry { background: #F0FDF4; color: #10B981; }
.news-list-item .news-cat-tag.tech { background: var(--color-accent-bg); color: var(--color-accent); }

.news-list-item h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

.news-list-item h3 a {
  color: var(--color-dark);
}

.news-list-item h3 a:hover {
  color: var(--color-primary);
}

.news-list-item p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========== Category Filter Bar ========== */
.news-filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--spacing-2xl);
}

.news-filter-btn {
  padding: 8px 22px;
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-gray);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.news-filter-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.news-filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.news-filter-btn .count {
  font-size: var(--font-size-xs);
  opacity: 0.7;
}

/* ========== Pagination ========== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: var(--spacing-3xl);
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.pagination a {
  color: var(--color-dark-secondary);
  border: 1px solid var(--color-border);
  background: var(--color-white);
}

.pagination a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
}

.pagination .page-num-current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.pagination .disabled {
  color: var(--color-gray-light);
  border-color: var(--color-border);
  background: var(--color-bg);
  cursor: not-allowed;
  opacity: 0.5;
}

.pagination .dots {
  border: none;
  background: none;
  color: var(--color-gray-light);
  min-width: auto;
  padding: 0 4px;
}

/* ========== News Detail Page ========== */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--spacing-3xl);
  align-items: start;
}

.article-main {
  min-width: 0;
}

.article-sidebar {
  position: sticky;
  top: 100px;
}

.article-sidebar > * {
  margin-bottom: var(--spacing-xl);
}

/* Sidebar Cards */
.sidebar-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.sidebar-card h4 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-card h4 .fas {
  color: var(--color-primary);
}

/* Category Nav in Sidebar */
.sidebar-cat-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  font-size: var(--font-size-sm);
  color: var(--color-dark-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  margin-bottom: 4px;
}

.sidebar-cat-nav a:hover,
.sidebar-cat-nav a.active {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.sidebar-cat-nav .cat-count {
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
  background: var(--color-bg);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* Latest News List in Sidebar */
.sidebar-news-list {
  list-style: none;
}

.sidebar-news-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-news-list li:last-child {
  border-bottom: none;
}

.sidebar-news-list a {
  display: flex;
  gap: 10px;
  font-size: var(--font-size-sm);
  color: var(--color-dark-secondary);
  line-height: 1.5;
  transition: color var(--transition-fast);
}

.sidebar-news-list a:hover {
  color: var(--color-primary);
}

.sidebar-news-list .sn-date {
  font-size: var(--font-size-xs);
  color: var(--color-gray-light);
  white-space: nowrap;
  flex-shrink: 0;
}

/* CTA Card */
.sidebar-cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
}

.sidebar-cta h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  border: none;
}

.sidebar-cta p {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
}

.sidebar-cta .btn {
  background: var(--color-white);
  color: var(--color-primary);
  width: 100%;
}

.sidebar-cta .btn:hover {
  background: var(--color-accent);
  color: var(--color-white);
}
.sidebar-cta-white h4{color:#fff;}

@media (max-width: 960px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}
.article-container {
  max-width: 860px;
  margin: 0 auto;
}

.article-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border);
}

.article-header h1 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: var(--spacing-lg);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-gray-light);
}

.article-meta .article-cat {
  padding: 3px 12px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.article-body {
  font-size: var(--font-size-base);
  line-height: 2;
  color:#333;
}

.article-body h2 {
  font-size: var(--font-size-xl);
  margin-bottom:1em;
	margin-top: 1em;
}

.article-body h3 {
  font-size: var(--font-size-lg);
  margin-bottom:1em;
	margin-top: 1em;
}

.article-body p {
  margin-bottom:1em;
	margin-top: 1em;
}

.article-body ul,
.article-body ol {
 margin-bottom:1em;
	margin-top: 1em;
  padding-left: var(--spacing-xl);
}

.article-body li {
  list-style: disc;
  margin-bottom:1em;
	margin-top: 1em;
  color:#333;
}
.article-body table{width:100%; line-height: 1.8em;}
.article-body table td{padding:5px;}
/* ========== Social Share ========== */
.social-share {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
}

.social-share-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  font-weight: 600;
  margin-right: 4px;
}

.social-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  border: none;
  color: var(--color-white);
  transition: all var(--transition-fast);
}

.social-share-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.social-share-btn.wechat { background: #07C160; }
.social-share-btn.weibo { background: #E6162D; }
.social-share-btn.qq { background: #12B7F5; }
.social-share-btn.copy { 
  background: var(--color-white); 
  color: var(--color-dark-secondary);
  border: 1px solid var(--color-border);
}

.social-share-btn.copy:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* QR Modal */
.qr-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.qr-modal-overlay.active {
  display: flex;
}

.qr-modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  max-width: 320px;
  width: 90%;
  position: relative;
}

.qr-modal h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.qr-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 24px;
  color: var(--color-gray-light);
  background: none;
  border: none;
  cursor: pointer;
}

.qr-modal-close:hover {
  color: var(--color-dark);
}

.qr-code-box {
  display: inline-block;
  padding: 12px;
  background: var(--color-white);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  line-height: 0;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
  gap: var(--spacing-md);
}

.article-nav a {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 500;
}

.article-nav a:hover {
  text-decoration: underline;
}

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  transition: all var(--transition-fast);
}

.article-back:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .news-list-item {
    grid-template-columns: 1fr;
  }
  .news-list-item .news-thumb {
    width: 100%;
    aspect-ratio: 16/9;
  }
  .news-list-item .news-body {
    padding: var(--spacing-lg);
  }
  .article-header h1 {
    font-size: var(--font-size-2xl);
  }
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.8;
}

/* ========== Support Page ========== */
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.support-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-base);
}

.support-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-lighter);
  transform: translateY(-4px);
}

.support-card-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-lg);
}

.support-card-icon.teal    { color: var(--color-primary); }
.support-card-icon.amber   { color: var(--color-accent); }
.support-card-icon.blue    { color: #3B82F6; }
.support-card-icon.green   { color: #10B981; }
.support-card-icon.red     { color: #EF4444; }
.support-card-icon.purple  { color: #8B5CF6; }
.support-card-icon.orange  { color: #F97316; }
.support-card-icon.pink    { color: #EC4899; }
.support-card-icon.cyan    { color: #06B6D4; }

.support-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.support-card p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

/* ========== Policy Cards ========== */
.policy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.policy-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition-base);
}

.policy-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-lighter);
}

.policy-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.policy-card ul {
  list-style: none;
}

.policy-card ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  line-height: 1.6;
}

.policy-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* ========== Certificates Grid ========== */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.cert-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.cert-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-lighter);
}

.cert-card-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  opacity: 0.6;
}

.cert-card h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
}

/* ========== Team Section ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.team-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: center;
  transition: all var(--transition-base);
}

.team-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.team-card-avatar {
  width: 100%;
  aspect-ratio: 1;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.team-card-avatar .avatar-icon {
  font-size: 64px;
  opacity: 0.2;
}

.team-card-body {
  padding: var(--spacing-lg);
}

.team-card-body h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 2px;
}

.team-card-body p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
  :root {
    --container-padding: 1rem;
  }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-shape-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
  }

  .hero-shape-2 {
    width: 300px;
    height: 300px;
  }

  .hero-content h1 {
    font-size: var(--font-size-4xl);
  }

  .hero-content p {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    justify-items: center;
    justify-content: center;
  }

  .hero-image {
    display: none;
  }

  .hero-image-cards {
    display: none;
  }

  .features-strip .container {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid,
  .cases-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solutions-grid {
    grid-template-columns: 1fr;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .custom-service-grid,
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .certs-grid,
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .policy-grid {
    grid-template-columns: 1fr;
  }

  .main-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .mobile-nav,
  .mobile-nav-overlay {
    display: block;
  }

  .header-phone {
    display: none;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .mobile-nav,
  .mobile-nav-overlay {
    display: block;
  }

  .header-phone {
    display: none;
  }

  .header-actions .btn {
    display: none;
  }

  .products-grid,
  .cases-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }

  .features-strip .container {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }

  .footer-col:first-child,
  .footer-col:last-child {
    grid-column: 1 / -1;
  }

  .flow-steps {
    grid-template-columns: 1fr;
  }

  .custom-service-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .certs-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-3xl) 0;
    overflow-x: hidden;
  }

  .hero-shape-1 {
    width: 300px;
    height: 300px;
    top: -80px;
    right: -80px;
  }

  .hero-shape-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    left: -50px;
  }

  .hero .container {
    padding: 0 var(--spacing-md);
  }

  .hero-content h1 {
    font-size: var(--font-size-3xl);
  }

  .hero-content p {
    font-size: var(--font-size-base);
  }

  .hero-badge {
    font-size: var(--font-size-xs);
    padding: 6px 14px;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md) var(--spacing-lg);
    justify-items: center;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
  }

  .hero-image {
    display: flex;
    justify-content: center;
     margin-top: 0px;
  }

  .hero-image-placeholder {
   
    aspect-ratio: 4/3;
  }

  .hero-image-cards {
    display: none;
  }

  .about-stats-row {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-sm);
  }

  .about-stat-box h3 {
    font-size: var(--font-size-lg);
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ========== Animations ========== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Print ========== */
@media print {
  .site-header,
  .site-footer,
  .mobile-nav,
  .mobile-nav-overlay {
    display: none;
  }
}

/* ========== Floating Action Buttons ========== */
.floating-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  font-size: 22px;
}

.floating-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.floating-btn-phone {
  display: none;
  background: var(--color-primary);
  color: var(--color-white);
}

.floating-btn-top {
  display: none;
  background: var(--color-white);
  color: var(--color-dark-secondary);
  border: 1px solid var(--color-border);
}

.floating-btn-top:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.floating-btn .fas {
  font-size: 20px;
}

.footer-contact-item .fi-icon {
  color: var(--color-primary-light);
  flex-shrink: 0;
  margin-top: 2px;
  width: 18px;
  text-align: center;
}

@media (max-width: 768px) {
  .floating-btn-phone {
    display: flex;
  }
}

@media (min-width: 769px) {
  .floating-btn-top {
    display: flex;
  }
}