/* ============================================
   企业官网模板 - 专业商务设计系统
   紫色+银灰 | 现代优雅的企业风格
   ============================================ */

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

/* 设计令牌 */
:root {
  /* 主色 - 深紫 */
  --corp-navy: #4a148c;
  --corp-navy-light: #6a1b9a;
  --corp-navy-dark: #311b92;

  /* 辅助色 - 品牌紫 */
  --corp-blue: #7b1fa2;
  --corp-blue-light: #ab47bc;
  --corp-blue-dark: #6a1b9a;

  /* 点缀色 - 粉紫 */
  --corp-accent: #ba68c8;
  --corp-accent-light: #ce93d8;

  /* 中性色 */
  --corp-white: #ffffff;
  --corp-offwhite: #f8f9fb;
  --corp-gray-100: #f0f2f5;
  --corp-gray-200: #e4e7ec;
  --corp-gray-300: #cdd3dc;
  --corp-gray-500: #8692a6;
  --corp-gray-700: #4a5568;
  --corp-gray-900: #1f2937;

  /* 渐变 */
  --grad-nav: linear-gradient(180deg, #4a148c 0%, #6a1b9a 100%);
  --grad-hero: linear-gradient(135deg, #4a148c 0%, #6a1b9a 50%, #4a148c 100%);
  --grad-accent: linear-gradient(135deg, #7b1fa2 0%, #ab47bc 100%);
  --grad-surface: linear-gradient(180deg, #f8f9fb 0%, #f0f2f5 100%);

  /* 字体 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;

  /* 字号 */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;

  /* 间距 */
  --gap-1: 0.25rem;
  --gap-2: 0.5rem;
  --gap-3: 0.75rem;
  --gap-4: 1rem;
  --gap-5: 1.25rem;
  --gap-6: 1.5rem;
  --gap-8: 2rem;
  --gap-10: 2.5rem;
  --gap-12: 3rem;
  --gap-16: 4rem;
  --gap-20: 5rem;

  /* 布局 */
  --container-max: 1180px;
  --border-radius: 6px;
  --border-radius-lg: 10px;
  --border-radius-xl: 16px;

  /* 阴影 */
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

/* 动画关键帧 */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* 基础样式 */
html {
  font-size: 16px;
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  color: var(--corp-gray-900);
  background: var(--corp-offwhite);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gap-6);
}

/* ===== 全局导航 ===== */
.global-nav {
  background: var(--grad-nav);
  padding: var(--gap-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.global-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--corp-white);
  text-decoration: none;
  letter-spacing: 1px;
  transition: var(--transition-fast);
}

.logo-link:hover {
  color: var(--corp-accent);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--gap-2);
}

.nav-list a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: var(--text-sm);
  padding: var(--gap-2) var(--gap-4);
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--corp-accent);
  transition: var(--transition-base);
  transform: translateX(-50%);
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--corp-white);
  background: rgba(255, 255, 255, 0.08);
}

.nav-list a.active::after {
  width: 60%;
}

/* ===== 首页横幅 ===== */
.hero-banner {
  background: var(--grad-hero);
  color: var(--corp-white);
  padding: var(--gap-20) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 30%, rgba(123, 31, 162, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(186, 104, 200, 0.08) 0%, transparent 50%);
}

.hero-banner .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  animation: slideUp 0.7s ease;
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--gap-5);
  letter-spacing: 2px;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== 子页面头部 ===== */
.subpage-header {
  background: var(--grad-hero);
  color: var(--corp-white);
  padding: var(--gap-12) 0;
  text-align: center;
  position: relative;
}

.subpage-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(123, 31, 162, 0.1) 0%, transparent 60%);
}

.subpage-header .container {
  position: relative;
  z-index: 1;
}

.subpage-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  animation: slideUp 0.5s ease;
}

.subpage-desc {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.75);
  margin-top: var(--gap-3);
}

/* ===== 主内容区 ===== */
.main-content {
  flex: 1;
  padding: var(--gap-12) 0;
  background: var(--grad-surface);
}

body.subpage .main-content {
  padding-top: var(--gap-8);
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--gap-2);
  font-size: var(--text-sm);
  color: var(--corp-gray-500);
  margin-bottom: var(--gap-8);
}

.breadcrumb a {
  color: var(--corp-blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--corp-blue-dark);
  text-decoration: underline;
}

.breadcrumb-divider {
  color: var(--corp-gray-300);
}

/* ===== 区块通用样式 ===== */
.section {
  margin-bottom: var(--gap-16);
  animation: slideUp 0.6s ease;
}

.section:last-child {
  margin-bottom: 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--gap-10);
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--corp-navy);
  display: inline-flex;
  align-items: center;
  gap: var(--gap-3);
}

.section-title::before,
.section-title::after {
  content: '';
  width: 40px;
  height: 2px;
  background: var(--grad-accent);
  border-radius: 1px;
}

.section-actions {
  text-align: center;
  margin-top: var(--gap-10);
}

/* ===== 简介模块 ===== */
.intro-panel {
  background: var(--corp-white);
  padding: var(--gap-10);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  border-left: 4px solid var(--corp-blue);
}

.intro-text {
  font-size: var(--text-lg);
  line-height: 2;
  color: var(--corp-gray-700);
  max-width: 860px;
  margin: 0 auto;
}

/* ===== 内容面板 ===== */
.content-box {
  background: var(--corp-white);
  padding: var(--gap-8);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--corp-blue);
}

.content-box p {
  line-height: 1.9;
  color: var(--corp-gray-700);
}

.content-box p + p {
  margin-top: var(--gap-4);
}

/* ===== 业务网格 ===== */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap-6);
}

.biz-card {
  background: var(--corp-white);
  padding: var(--gap-8);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xs);
  text-align: center;
  transition: var(--transition-base);
  border: 1px solid var(--corp-gray-200);
  position: relative;
  overflow: hidden;
}

.biz-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transition: var(--transition-base);
}

.biz-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--corp-blue-light);
}

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

.biz-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--gap-5);
  background: var(--grad-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--corp-white);
}

.biz-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--corp-navy);
  margin-bottom: var(--gap-3);
}

.biz-desc {
  font-size: var(--text-sm);
  color: var(--corp-gray-500);
  line-height: 1.7;
}

/* ===== 优势列表 ===== */
.advantage-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap-6);
}

.advantage-item {
  display: flex;
  gap: var(--gap-5);
  padding: var(--gap-6);
  background: var(--corp-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--corp-gray-200);
  transition: var(--transition-base);
}

.advantage-item:hover {
  border-color: var(--corp-accent);
  box-shadow: var(--shadow-md);
}

.advantage-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--corp-accent) 0%, var(--corp-accent-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--corp-navy);
  flex-shrink: 0;
}

.advantage-body {
  flex: 1;
}

.advantage-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--corp-navy);
  margin-bottom: var(--gap-2);
}

.advantage-text {
  font-size: var(--text-sm);
  color: var(--corp-gray-500);
  line-height: 1.7;
}

/* ===== 流程时间线 ===== */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-4);
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--corp-gray-200);
  z-index: 0;
}

.process-node {
  background: var(--corp-white);
  padding: var(--gap-6);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xs);
  text-align: center;
  border: 1px solid var(--corp-gray-200);
  transition: var(--transition-base);
  position: relative;
  z-index: 1;
}

.process-node:hover {
  border-color: var(--corp-blue);
  box-shadow: var(--shadow-md);
}

.process-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--grad-accent);
  color: var(--corp-white);
  border-radius: 50%;
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--gap-4);
}

.process-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--corp-navy);
}

/* ===== 新闻卡片 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--gap-6);
}

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

.news-card {
  display: flex;
  background: var(--corp-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  border: 1px solid var(--corp-gray-200);
  transition: var(--transition-base);
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--corp-blue-light);
}

.news-thumb {
  width: 180px;
  flex-shrink: 0;
  background: var(--corp-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.news-thumb-placeholder {
  font-size: var(--text-xs);
  color: var(--corp-gray-500);
  text-align: center;
  padding: var(--gap-4);
}

.news-body {
  flex: 1;
  padding: var(--gap-6);
  display: flex;
  flex-direction: column;
}

.news-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--gap-2);
}

.news-title a {
  color: var(--corp-navy);
  text-decoration: none;
  transition: var(--transition-fast);
}

.news-title a:hover {
  color: var(--corp-blue);
}

.news-date {
  font-size: var(--text-xs);
  color: var(--corp-gray-500);
  margin-bottom: var(--gap-3);
}

.news-excerpt {
  font-size: var(--text-sm);
  color: var(--corp-gray-500);
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--gap-4);
}

.news-link {
  font-size: var(--text-sm);
  color: var(--corp-blue);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
}

.news-link:hover {
  color: var(--corp-blue-dark);
}

/* ===== 联系信息栏 ===== */
.contact-strip {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--gap-8);
  padding: var(--gap-6);
  background: var(--corp-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact-strip-item {
  display: flex;
  align-items: center;
  gap: var(--gap-3);
  color: var(--corp-gray-700);
  font-size: var(--text-sm);
}

.contact-strip-item svg {
  color: var(--corp-blue);
}

/* ===== 联系卡片网格 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap-6);
}

.contact-tile {
  display: flex;
  gap: var(--gap-5);
  padding: var(--gap-6);
  background: var(--corp-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--corp-gray-200);
  transition: var(--transition-base);
}

.contact-tile:hover {
  border-color: var(--corp-blue);
  box-shadow: var(--shadow-md);
}

.contact-tile-icon {
  width: 52px;
  height: 52px;
  background: var(--grad-accent);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--corp-white);
  flex-shrink: 0;
}

.contact-tile-body {
  flex: 1;
}

.contact-tile-label {
  font-size: var(--text-sm);
  color: var(--corp-gray-500);
  margin-bottom: var(--gap-1);
}

.contact-tile-value {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--corp-navy);
}

/* ===== 文章详情 ===== */
.article-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.article-header {
  margin-bottom: var(--gap-8);
  padding-bottom: var(--gap-6);
  border-bottom: 1px solid var(--corp-gray-200);
}

.article-main-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--corp-navy);
  margin-bottom: var(--gap-3);
}

.article-meta {
  font-size: var(--text-sm);
  color: var(--corp-gray-500);
}

.article-body {
  background: var(--corp-white);
  padding: var(--gap-10);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.article-body p {
  line-height: 2;
  color: var(--corp-gray-700);
  margin-bottom: var(--gap-5);
}

.article-body p:last-child {
  margin-bottom: 0;
}

/* ===== 相关推荐 ===== */
.related-section {
  margin-top: var(--gap-10);
  padding: var(--gap-6);
  background: var(--corp-gray-100);
  border-radius: var(--border-radius-lg);
}

.related-heading {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--corp-navy);
  margin-bottom: var(--gap-5);
}

.related-list {
  list-style: none;
}

.related-list li {
  padding: var(--gap-3) 0;
  border-bottom: 1px solid var(--corp-gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.related-list a {
  color: var(--corp-gray-700);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: var(--transition-fast);
}

.related-list a:hover {
  color: var(--corp-blue);
}

.related-list time {
  font-size: var(--text-xs);
  color: var(--corp-gray-500);
}

/* ===== 返回按钮 ===== */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-2);
  margin-top: var(--gap-8);
  color: var(--corp-blue);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: var(--transition-fast);
}

.back-link:hover {
  color: var(--corp-blue-dark);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-2);
  padding: var(--gap-3) var(--gap-6);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--grad-accent);
  color: var(--corp-white);
}

.btn-primary:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--gap-2);
  margin-top: var(--gap-10);
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--gap-3);
  font-size: var(--text-sm);
  color: var(--corp-gray-700);
  text-decoration: none;
  background: var(--corp-white);
  border: 1px solid var(--corp-gray-200);
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
}

.page-link:hover {
  border-color: var(--corp-blue);
  color: var(--corp-blue);
}

.page-link.current {
  background: var(--corp-blue);
  border-color: var(--corp-blue);
  color: var(--corp-white);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--corp-navy);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--gap-12) 0 var(--gap-6);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: var(--gap-10);
  margin-bottom: var(--gap-10);
}

.footer-heading {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--corp-white);
  margin-bottom: var(--gap-4);
  padding-bottom: var(--gap-2);
  border-bottom: 2px solid var(--corp-accent);
  display: inline-block;
}

.footer-about-text {
  font-size: var(--text-sm);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
}

.footer-nav {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--gap-2);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--corp-accent);
}

.footer-contact p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--gap-2);
}

.footer-bottom {
  padding-top: var(--gap-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
}

.footer-sitemap {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-sitemap:hover {
  color: var(--corp-accent);
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-timeline::before {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
  }
  
  .hero-banner {
    padding: var(--gap-12) 0;
  }
  
  .global-nav .container {
    display: flex;
    justify-content: space-between;
    flex-direction: column;
  }
  
  .article-body img {
      max-width: 240px;
  }
  
  .nav-list {
    margin-top: 10px;
    gap: 0;
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--gap-8);
  }
  
  .news-card {
    flex-direction: column;
  }
  
  .news-thumb {
    width: 100%;
    height: 160px;
  }
  
  .process-timeline {
    grid-template-columns: 1fr;
  }
  
  .contact-strip {
    flex-direction: column;
    align-items: flex-start;
  }
}