/* ========================================
   湖南威安智优信息科技有限公司 - 官网样式
   ======================================== */

/* ===== CSS 变量 ===== */
:root {
  /* 主色调 - 科技深蓝 */
  --color-navy: #0a1628;
  --color-navy-light: #13243d;
  --color-blue: #2563eb;
  --color-blue-light: #3b82f6;
  --color-blue-lighter: #60a5fa;
  --color-blue-dark: #1e40af;

  /* 辅助色 */
  --color-cyan: #06b6d4;
  --color-green: #10b981;
  --color-orange: #f59e0b;
  --color-purple: #8b5cf6;

  /* 中性色 */
  --color-white: #ffffff;
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-text-medium: #475569;
  --color-text-light: #94a3b8;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  --gradient-dark: linear-gradient(135deg, #0a1628 0%, #13243d 100%);
  --gradient-hero: linear-gradient(135deg, #0a1628 0%, #1e3a5f 50%, #2563eb 100%);
  --gradient-card: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(37, 99, 235, 0.04) 100%);

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);
  --shadow-blue: 0 8px 30px rgba(37, 99, 235, 0.2);

  /* 尺寸 */
  --container-width: 1200px;
  --nav-height: 70px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* 过渡 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

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

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

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.nav-logo .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-blue);
}

.nav-logo .logo-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--color-white);
}

.nav-logo .logo-text {
  color: var(--color-white);
  transition: var(--transition);
}

.navbar.scrolled .nav-logo .logo-text {
  color: var(--color-navy);
}

.nav-logo .logo-text span {
  color: var(--color-blue-light);
}

/* 导航菜单 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu > li > a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.navbar.scrolled .nav-menu > li > a {
  color: var(--color-text-medium);
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
  color: var(--color-white);
  background: rgba(37, 99, 235, 0.3);
}

.navbar.scrolled .nav-menu > li > a:hover,
.navbar.scrolled .nav-menu > li > a.active {
  color: var(--color-blue);
  background: rgba(37, 99, 235, 0.08);
}

/* 下拉菜单 */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--color-text-medium);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-dropdown-menu a:hover {
  background: var(--color-bg-alt);
  color: var(--color-blue);
}

.nav-dropdown-menu a .dropdown-desc {
  display: block;
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 2px;
}

/* CTA 按钮 */
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 22px;
  background: var(--gradient-primary);
  color: var(--color-white) !important;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: var(--shadow-blue);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.35);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
  background: var(--color-navy);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(37, 99, 235, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
}

.btn-dark {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn-dark:hover {
  background: var(--color-navy-light);
  transform: translateY(-2px);
}

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

/* ===== Hero 区域 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Hero 背景网格 */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* Hero 光斑 */
.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 60px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-blue-lighter);
  margin-bottom: 24px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-blue-lighter);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-white);
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #60a5fa, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 600px;
}

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

/* Hero 浮动卡片 */
.hero-visual {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  max-width: 500px;
  z-index: 1;
}

.hero-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 16px;
  transition: var(--transition);
}

.hero-card:hover {
  transform: translateX(-8px);
  border-color: rgba(59, 130, 246, 0.4);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.hero-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-card-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--color-white);
}

.hero-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
}

.hero-card-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

/* 内页 Hero */
.page-hero {
  position: relative;
  background: var(--gradient-dark);
  padding: calc(var(--nav-height) + 80px) 0 80px;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.page-hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.page-hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

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

.breadcrumb span {
  color: var(--color-blue-lighter);
}

/* ===== 通用 Section ===== */
.section {
  padding: 100px 0;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-blue);
  font-size: 13px;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-medium);
  line-height: 1.8;
}

/* ===== 统计数据 ===== */
.stats-bar {
  background: var(--color-navy);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, #60a5fa, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== 产品卡片 ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.product-card-header {
  padding: 40px 32px 24px;
  position: relative;
  overflow: hidden;
}

.product-card-header.bg-blue { background: linear-gradient(135deg, #1e40af, #3b82f6); }
.product-card-header.bg-green { background: linear-gradient(135deg, #047857, #10b981); }
.product-card-header.bg-orange { background: linear-gradient(135deg, #b45309, #f59e0b); }

.product-card-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.product-card-icon {
  width: 56px;
  height: 56px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.product-card-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--color-white);
}

.product-card-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  position: relative;
  z-index: 1;
}

.product-card-header .product-tag {
  display: inline-block;
  margin-top: 8px;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  font-size: 12px;
  color: var(--color-white);
  position: relative;
  z-index: 1;
}

.product-card-body {
  padding: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-body p {
  color: var(--color-text-medium);
  margin-bottom: 20px;
  line-height: 1.8;
}

.product-card-body .feature-list {
  margin-bottom: 24px;
}

.product-card-body .feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--color-text-medium);
}

.product-card-body .feature-list li::before {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-blue);
  flex-shrink: 0;
  margin-top: 3px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='white' d='M6.5 11.5L3 8l1-1 2.5 2.5L12 4l1 1z'/%3E%3C/svg%3E");
  background-size: 14px;
  background-position: center;
  background-repeat: no-repeat;
}

.product-card-body .btn-text {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-blue);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}

.product-card-body .btn-text:hover {
  gap: 12px;
}

/* ===== 业务领域卡片 ===== */
.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.business-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 48px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.business-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.business-card.bg-software {
  background: linear-gradient(135deg, #0a1628 0%, #1e3a5f 100%);
}

.business-card.bg-weak {
  background: linear-gradient(135deg, #0c4a3e 0%, #065f46 100%);
}

.business-card .biz-pattern {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.5) 1px, transparent 1px);
  background-size: 30px 30px;
}

.business-card .biz-icon {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.business-card .biz-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--color-white);
}

.business-card h3 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.business-card p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.business-card .biz-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.business-card .biz-tags span {
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

/* ===== 服务流程 ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-cyan));
  opacity: 0.2;
}

.process-item {
  text-align: center;
  position: relative;
}

.process-number {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-blue);
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.process-item:hover .process-number {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-color: transparent;
  transform: scale(1.1);
}

.process-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.process-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== 关于我们 - 公司介绍 ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro-text h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--color-text);
}

.about-intro-text p {
  color: var(--color-text-medium);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-intro-visual {
  position: relative;
}

.about-intro-visual .visual-card {
  background: var(--gradient-dark);
  border-radius: var(--radius-xl);
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.about-intro-visual .visual-card::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.2), transparent 70%);
  border-radius: 50%;
}

.about-intro-visual .visual-card h3 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 8px;
}

.about-intro-visual .visual-card p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 15px;
}

/* ===== 发展历程时间线 ===== */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0;
  margin-bottom: 40px;
  align-items: center;
}

.timeline-item:nth-child(even) .timeline-content {
  grid-column: 3;
  text-align: left;
}

.timeline-item:nth-child(odd) .timeline-content {
  grid-column: 1;
  text-align: right;
}

.timeline-dot {
  grid-column: 2;
  width: 16px;
  height: 16px;
  background: var(--color-blue);
  border: 4px solid var(--color-white);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
  justify-self: center;
}

.timeline-content {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.timeline-content:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.timeline-content .year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-blue);
  margin-bottom: 8px;
}

.timeline-content h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.timeline-content p {
  font-size: 14px;
  color: var(--color-text-light);
}

/* ===== 企业文化 ===== */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.culture-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

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

.culture-card .culture-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.culture-card .culture-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--color-blue);
}

.culture-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

.culture-card p {
  color: var(--color-text-medium);
  font-size: 14px;
  line-height: 1.8;
}

/* ===== 产品详情页 ===== */
.product-detail-hero {
  position: relative;
  padding: calc(var(--nav-height) + 60px) 0 60px;
  overflow: hidden;
}

.product-detail-hero.bg-blue { background: linear-gradient(135deg, #0a1628 0%, #1e3a5f 50%, #1e40af 100%); }
.product-detail-hero.bg-green { background: linear-gradient(135deg, #022c22 0%, #064e3b 50%, #047857 100%); }
.product-detail-hero.bg-orange { background: linear-gradient(135deg, #1c130a 0%, #451a03 50%, #b45309 100%); }

.product-detail-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

.product-detail-hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-detail-hero-content .product-info h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
}

.product-detail-hero-content .product-info .product-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-white);
  margin-bottom: 20px;
}

.product-detail-hero-content .product-info p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.9;
  margin-bottom: 28px;
}

.product-detail-hero-content .product-info .hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.product-detail-hero-content .product-info .hero-tags span {
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

/* 产品详情 - 功能列表 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition);
}

.feature-item:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-item .feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-item .feature-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--color-white);
}

.feature-item h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

.feature-item p {
  color: var(--color-text-medium);
  font-size: 14px;
  line-height: 1.8;
}

/* 产品详情 - 优势 */
.advantage-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.advantage-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.advantage-item:hover {
  box-shadow: var(--shadow-md);
}

.advantage-item .adv-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-blue);
  opacity: 0.3;
  flex-shrink: 0;
  line-height: 1;
}

.advantage-item .adv-content h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.advantage-item .adv-content p {
  font-size: 14px;
  color: var(--color-text-medium);
  line-height: 1.7;
}

/* 产品导航 */
.product-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 40px 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.product-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-weight: 500;
  color: var(--color-text-medium);
}

.product-nav-item:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.product-nav-item svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-info-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--color-text);
}

.contact-info-list li {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-info-list li:last-child {
  border-bottom: none;
}

.contact-info-list .contact-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient-card);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-list .contact-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--color-blue);
}

.contact-info-list .contact-detail h5 {
  font-size: 13px;
  color: var(--color-text-light);
  font-weight: 500;
  margin-bottom: 4px;
}

.contact-info-list .contact-detail p {
  font-size: 15px;
  color: var(--color-text);
  font-weight: 500;
}

/* 联系表单 */
.contact-form-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--color-text);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-blue);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 16px;
}

/* 地图区域 */
.map-section {
  background: var(--color-navy);
  padding: 60px 0;
}

.map-placeholder {
  background: var(--color-navy-light);
  border-radius: var(--radius-lg);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.map-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
}

.map-placeholder .map-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.map-placeholder .map-pin {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--gradient-primary);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-blue);
}

.map-placeholder .map-pin svg {
  width: 28px;
  height: 28px;
  fill: var(--color-white);
  transform: rotate(45deg);
}

.map-placeholder h4 {
  font-size: 1.25rem;
  color: var(--color-white);
  margin-bottom: 8px;
}

.map-placeholder p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

/* ===== CTA 区域 ===== */
.cta-section {
  position: relative;
  background: var(--gradient-dark);
  padding: 80px 0;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 70% 50%, rgba(59, 130, 246, 0.15), transparent 60%);
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-brand .footer-logo .logo-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--color-white);
}

.footer-brand .footer-logo span {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 20px;
}

.footer-brand .footer-social {
  display: flex;
  gap: 12px;
}

.footer-brand .footer-social a {
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.footer-brand .footer-social a:hover {
  background: var(--color-blue);
  transform: translateY(-3px);
}

.footer-brand .footer-social svg {
  width: 18px;
  height: 18px;
  fill: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-brand .footer-social a:hover svg {
  fill: var(--color-white);
}

.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-blue-lighter);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 14px;
  line-height: 1.6;
}

.footer-contact li svg {
  width: 16px;
  height: 16px;
  fill: rgba(255, 255, 255, 0.4);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: var(--color-blue-lighter);
}

/* ===== 动画 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-on-scroll {
  opacity: 0;
}

.animate-on-scroll.animated {
  animation: fadeInUp 0.8s ease forwards;
}

.animate-left.animated {
  animation: fadeInLeft 0.8s ease forwards;
}

.animate-right.animated {
  animation: fadeInRight 0.8s ease forwards;
}

/* 延迟 */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.75rem;
  }

  .hero-visual {
    display: none;
  }

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

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

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

  .process-grid::before {
    display: none;
  }

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

  .product-detail-hero-content {
    grid-template-columns: 1fr;
  }

  .advantage-list {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .container {
    padding: 0 20px;
  }

  /* 移动端导航 */
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 20px 30px;
    gap: 4px;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    overflow-y: auto;
  }

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

  .nav-menu > li > a {
    color: var(--color-text);
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-size: 16px;
  }

  .nav-menu > li > a:hover,
  .nav-menu > li > a.active {
    background: var(--color-bg-alt);
    color: var(--color-blue);
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding: 0 0 0 16px;
    background: transparent;
  }

  .nav-dropdown-menu a {
    padding: 10px 14px;
    color: var(--color-text-light);
  }

  .nav-cta {
    margin-top: 12px;
    justify-content: center;
  }

  .nav-toggle {
    display: flex;
  }

  /* 导航遮罩 */
  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
  }

  .nav-overlay.active {
    display: block;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding: calc(var(--nav-height) + 40px) 0 60px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

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

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Section */
  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .page-hero {
    padding: calc(var(--nav-height) + 50px) 0 50px;
  }

  .page-hero h1 {
    font-size: 2rem;
  }

  .product-detail-hero-content .product-info h1 {
    font-size: 2rem;
  }

  /* 网格 */
  .products-grid,
  .feature-grid,
  .culture-grid,
  .contact-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .stat-item .stat-number {
    font-size: 2rem;
  }

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

  /* 时间线 */
  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    grid-template-columns: 40px 1fr;
    gap: 16px;
  }

  .timeline-item:nth-child(even) .timeline-content,
  .timeline-item:nth-child(odd) .timeline-content {
    grid-column: 2;
    text-align: left;
  }

  .timeline-dot {
    grid-column: 1;
  }

  /* 页脚 */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  /* 业务卡片 */
  .business-card {
    padding: 32px 28px;
    min-height: auto;
  }

  /* 联系表单 */
  .contact-info-card,
  .contact-form-card {
    padding: 28px;
  }

  /* CTA */
  .cta-content h2 {
    font-size: 1.75rem;
  }

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

  .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.65rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

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

  .product-card-header,
  .product-card-body {
    padding: 24px;
  }
}