/* ========================================
   中润咨询官网 - 全局样式
   配色：深蓝→藏青→淡蓝→淡紫渐变
   风格：玻璃拟态 + 商务高端
   ======================================== */

/* CSS变量定义 */
:root {
  /* 主色调 - 深蓝到淡紫渐变 */
  --primary-dark: #1a237e;
  --primary-navy: #283593;
  --primary-blue: #3949ab;
  --primary-light: #5c6bc0;
  --primary-lavender: #7986cb;
  --primary-soft: #9fa8da;
  
  /* 渐变定义 */
  --gradient-primary: linear-gradient(135deg, #1a237e 0%, #283593 25%, #3949ab 50%, #5c6bc0 75%, #7986cb 100%);
  --gradient-dark: linear-gradient(135deg, #0d1642 0%, #1a237e 50%, #283593 100%);
  --gradient-light: linear-gradient(135deg, #3949ab 0%, #5c6bc0 50%, #7986cb 100%);
  --gradient-glass: linear-gradient(135deg, rgba(26, 35, 126, 0.85) 0%, rgba(40, 53, 147, 0.8) 50%, rgba(57, 73, 171, 0.75) 100%);
  
  /* 文字颜色 */
  --text-dark: #1a1a2e;
  --text-medium: #4a4a6a;
  --text-light: #6a6a8a;
  --text-white: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.8);
  
  /* 背景色 */
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-gray: #f0f2f5;
  --bg-dark: #1a1a2e;
  
  /* 玻璃拟态 */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(26, 35, 126, 0.15);
  --glass-blur: blur(20px);
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(26, 35, 126, 0.1);
  --shadow-md: 0 4px 16px rgba(26, 35, 126, 0.15);
  --shadow-lg: 0 8px 32px rgba(26, 35, 126, 0.2);
  --shadow-glow: 0 0 30px rgba(92, 107, 192, 0.3);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  
  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* 字体 */
  --font-title: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  --font-body: 'Microsoft YaHei', 'PingFang SC', sans-serif;
  
  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* 重置样式 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background-color: var(--bg-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

/* ========================================
   通用组件样式
   ======================================== */

/* 玻璃拟态卡片 */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow), var(--glass-shadow);
}

/* 渐变按钮 */
.btn-gradient {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  background: var(--gradient-primary);
  color: var(--text-white);
  font-weight: 600;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.btn-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: var(--transition-slow);
}

.btn-gradient:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.btn-gradient:hover::before {
  left: 100%;
}

.btn-gradient:active {
  transform: translateY(-1px);
}

/* 描边按钮 */
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  background: transparent;
  color: var(--primary-dark);
  font-weight: 600;
  border-radius: var(--radius-xl);
  border: 2px solid var(--primary-blue);
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-outline:hover {
  background: var(--gradient-primary);
  color: var(--text-white);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* 白色描边按钮 */
.btn-outline-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: var(--text-white);
  font-weight: 500;
  border-radius: var(--radius-xl);
  border: 2px solid rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--text-white);
  transform: translateY(-2px);
}

/* 区块标题 */
.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-title h2 {
  font-family: var(--font-title);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.section-title p {
  font-size: 1.125rem;
  color: var(--text-medium);
  max-width: 600px;
  margin: 0 auto;
}

/* 页面头部 */
.page-header {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-dark);
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
  background-size: 100px 100px;
  opacity: 0.5;
}

.page-header-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--text-white);
}

.page-header-content h1 {
  font-family: var(--font-title);
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.page-header-content p {
  font-size: 1.25rem;
  opacity: 0.9;
  max-width: 700px;
  margin: 0 auto;
}

/* ========================================
   导航栏样式
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition-normal);
  background: transparent;
}

.navbar.scrolled {
  background: var(--gradient-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: 0.5rem 0;
  box-shadow: var(--shadow-md);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  height: 50px;
  transition: var(--transition-normal);
}

.navbar.scrolled .navbar-logo {
  height: 40px;
}

.navbar-logo img {
  height: 100%;
  width: auto;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  color: var(--text-white);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-soft), var(--text-white));
  transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.navbar-contact {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.navbar-phone {
  color: var(--text-white);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 汉堡菜单 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.navbar-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-white);
  transition: var(--transition-normal);
}

/* ========================================
   轮播图样式
   ======================================== */
.hero-slider {
  position: relative;
  height: 100vh;
  min-height: 700px;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s ease, visibility 1s ease;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
}

.hero-slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transform: scale(1.1);
  transition: transform 6s ease;
}

.hero-slide.active .hero-slide-bg {
  transform: scale(1);
}

.hero-slide-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26, 35, 126, 0.85) 0%, rgba(26, 35, 126, 0.6) 50%, rgba(40, 53, 147, 0.7) 100%);
}

.hero-slide-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-white);
  max-width: 1100px;
  padding: 0 var(--space-lg);
  z-index: 2;
}

.hero-slide-content h2 {
  font-family: var(--font-title);
  font-size: 3.25rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease 0.3s;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
  white-space: nowrap;
  line-height: 1.2;
}

.hero-slide.active .hero-slide-content h2 {
  opacity: 1;
  transform: translateY(0);
}

.hero-slide-content p {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease 0.5s;
}

.hero-slide.active .hero-slide-content p {
  opacity: 1;
  transform: translateY(0);
}

.hero-slide-content .btn-gradient {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease 0.7s;
}

.hero-slide.active .hero-slide-content .btn-gradient {
  opacity: 1;
  transform: translateY(0);
}

/* 轮播指示器 */
.hero-dots {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}

.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: var(--transition-normal);
}

.hero-dot.active {
  background: var(--text-white);
  transform: scale(1.2);
}

.hero-dot:hover {
  background: rgba(255, 255, 255, 0.8);
}

/* 轮播箭头 */
.hero-arrows {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  z-index: 10;
  pointer-events: none;
}

.hero-arrow {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition-normal);
  pointer-events: auto;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-arrow:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

/* ========================================
   区块通用样式
   ======================================== */
.section {
  padding: var(--space-xl) 0;
  position: relative;
}

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

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ========================================
   服务卡片样式
   ======================================== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.service-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(26, 35, 126, 0.08);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 2rem;
  color: var(--text-white);
}

.service-image {
  width: 100%;
  height: 180px;
  background: var(--gradient-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  overflow: hidden;
  transition: var(--transition-normal);
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.service-card:hover .service-image img {
  transform: scale(1.05);
}

.service-card h3 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--space-sm);
  text-align: center;
  white-space: nowrap;
  overflow: visible;
  text-overflow: clip;
}

.service-card p {
  color: var(--text-medium);
  margin-bottom: var(--space-md);
  line-height: 1.7;
  flex: 1;
}

.service-card .btn-outline {
  padding: 0.625rem 1.5rem;
  font-size: 0.9rem;
  width: 100%;
  text-align: center;
  margin-top: auto;
  margin-left: 0;
  margin-right: 0;
  display: block;
}

/* ========================================
   案例卡片样式
   ======================================== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-lg);
}

.case-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.case-image {
  height: 220px;
  background: var(--gradient-light);
  position: relative;
  overflow: hidden;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.case-card:hover .case-image img {
  transform: scale(1.05);
}

.case-content {
  padding: var(--space-lg);
}

.case-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(26, 35, 126, 0.1);
  color: var(--primary-dark);
  font-size: 0.8rem;
  border-radius: 20px;
  margin-bottom: var(--space-sm);
}

.case-content h3 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-dark);
}

.case-content p {
  color: var(--text-medium);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ========================================
   优势/特点样式
   ======================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.feature-item {
  text-align: center;
  padding: var(--space-xl);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 2rem;
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

.feature-item h4 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-dark);
}

.feature-item p {
  color: var(--text-medium);
  font-size: 0.95rem;
}

/* ========================================
   联系信息样式
   ======================================== */
.contact-section {
  background: var(--gradient-dark);
  color: var(--text-white);
  padding: var(--space-3xl) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.contact-item p {
  opacity: 0.85;
  line-height: 1.6;
}

/* ========================================
   底部样式
   ======================================== */
.footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand p {
  opacity: 0.7;
  margin-top: var(--space-md);
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-white);
}

.footer-links ul li {
  margin-bottom: 0.75rem;
}

.footer-links ul li a {
  opacity: 0.7;
  transition: var(--transition-normal);
}

.footer-links ul li a:hover {
  opacity: 1;
  color: var(--primary-soft);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-bottom p {
  opacity: 0.6;
  font-size: 0.9rem;
}

.footer-mission {
  font-style: italic;
  opacity: 0.8;
}

/* ========================================
   产品详情页样式
   ======================================== */
.product-detail-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-xl);
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

/* 左侧目录 */
.product-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.product-nav {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.product-nav-header {
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
}

.product-nav-list {
  padding: var(--space-sm) 0;
}

.product-nav-item {
  display: block;
  padding: 0.875rem var(--space-lg);
  color: var(--text-medium);
  border-left: 3px solid transparent;
  transition: var(--transition-fast);
}

.product-nav-item:hover,
.product-nav-item.active {
  background: rgba(26, 35, 126, 0.05);
  color: var(--primary-dark);
  border-left-color: var(--primary-blue);
}

/* 右侧内容 */
.product-content {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.product-section {
  padding: var(--space-xl);
  border-bottom: 1px solid var(--bg-gray);
}

.product-section:last-child {
  border-bottom: none;
}

.product-section h2 {
  font-family: var(--font-title);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--primary-soft);
  display: inline-block;
}

.product-section h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin: var(--space-md) 0 var(--space-sm);
}

.product-section p {
  color: var(--text-medium);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.product-section ul {
  list-style: disc;
  padding-left: var(--space-lg);
  color: var(--text-medium);
}

.product-section ul li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.product-architecture {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-top: var(--space-md);
  text-align: center;
}

.product-architecture img {
  max-width: 100%;
  border-radius: var(--radius-sm);
}

/* 流程步骤 */
.process-steps {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.process-step {
  flex: 1;
  min-width: 150px;
  text-align: center;
  position: relative;
}

.process-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -1rem;
  top: 2rem;
  color: var(--primary-light);
  font-size: 1.5rem;
}

.process-number {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto var(--space-sm);
}

.process-step h4 {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* 返回按钮 */
.back-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-gray);
  color: var(--text-medium);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  transition: var(--transition-normal);
}

.back-button:hover {
  background: var(--primary-soft);
  color: var(--text-white);
}

/* ========================================
   表单样式
   ======================================== */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid #ddd;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-normal);
  background: var(--bg-white);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(57, 73, 171, 0.1);
}

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

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

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

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

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

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

.animate-fadeIn {
  animation: fadeIn 0.8s ease forwards;
}

.animate-slideInLeft {
  animation: slideInLeft 0.8s ease forwards;
}

.animate-slideInRight {
  animation: slideInRight 0.8s ease forwards;
}

/* 滚动显示动画 */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
  .product-detail-container {
    grid-template-columns: 240px 1fr;
  }
}

@media (max-width: 992px) {
  .navbar-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--gradient-glass);
    backdrop-filter: var(--glass-blur);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-150%);
    transition: var(--transition-normal);
  }
  
  .navbar-nav.active {
    transform: translateY(0);
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-contact {
    display: none;
  }
  
  .hero-slide-content h2 {
    font-size: 2.5rem;
  }
  
  .hero-slide-content p {
    font-size: 1.25rem;
  }
  
  .section-title h2 {
    font-size: 2rem;
  }
  
  .page-header-content h1 {
    font-size: 2.25rem;
  }
  
  .product-detail-container {
    grid-template-columns: 1fr;
  }
  
  .product-sidebar {
    position: relative;
    top: 0;
  }
  
  .product-nav {
    max-height: 300px;
    overflow-y: auto;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps {
    flex-direction: column;
  }
  
  .process-step:not(:last-child)::after {
    content: '↓';
    right: auto;
    top: auto;
    bottom: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
  }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 4rem;
    --space-2xl: 3rem;
  }
  
  .hero-slider {
    min-height: 600px;
    height: auto;
    padding: 120px 0 80px;
  }
  
  .hero-slide {
    position: relative;
    height: auto;
    min-height: 500px;
  }
  
  .hero-slide-content {
    position: relative;
    top: 0;
    left: 0;
    transform: none;
    padding: var(--space-xl) var(--space-md);
  }
  
  .hero-slide-content h2 {
    font-size: 1.875rem;
    white-space: normal;
  }
  
  .hero-slide-content p {
    font-size: 1rem;
  }
  
  .hero-arrows {
    display: none;
  }
  
  .section-title h2 {
    font-size: 1.75rem;
  }
  
  .page-header {
    height: 300px;
  }
  
  .page-header-content h1 {
    font-size: 1.875rem;
  }
  
  .page-header-content p {
    font-size: 1rem;
  }
  
  .service-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
  
  .btn-gradient,
  .btn-outline {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .product-section {
    padding: var(--space-lg);
  }
  
  .product-section h2 {
    font-size: 1.5rem;
  }
}

/* ========================================
   固定咨询按钮
   ======================================== */
.fixed-consult {
  position: fixed;
  right: 20px;
  bottom: 100px;
  z-index: 999;
}

.fixed-consult-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  background: var(--gradient-primary);
  color: var(--text-white);
  border-radius: var(--radius-xl);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
  animation: float 3s ease-in-out infinite;
}

.fixed-consult-btn:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: var(--shadow-glow);
}

@media (max-width: 768px) {
  .fixed-consult {
    right: 10px;
    bottom: 80px;
  }
  
  .fixed-consult-btn {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }
  
  .fixed-consult-btn span {
    display: none;
  }
}