/* ========================================
   青岛思路德科技 - 全局样式
   ======================================== */

/* CSS变量定义 */
:root {
  --primary: #1e3a5f;
  --primary-dark: #152a45;
  --accent: #d4a853;
  --accent-light: #e8c77b;
  --text: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --bg: #ffffff;
  --bg-light: #f8f9fa;
  --bg-section: #f5f7fa;
  --border: #e5e7eb;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --radius-lg: 24px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
}

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

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

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(30, 58, 95, 0.3);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: var(--primary-dark);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(212, 168, 83, 0.3);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text);
}

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

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

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

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #fff;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-dark);
}

.navbar-title h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.navbar-title span {
  font-size: 12px;
  color: var(--text-muted);
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-menu a {
  padding: 10px 18px;
  font-size: 15px;
  color: var(--text);
  border-radius: 6px;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--primary);
  background: var(--bg-light);
}

.navbar-contact {
  display: flex;
  align-items: center;
  gap: 16px;
}

.navbar-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 500;
}

.navbar-phone svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
}

/* 移动端菜单按钮 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.navbar-toggle span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

/* ========================================
   Hero区域
   ======================================== */
.hero {
  padding-top: 80px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  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="rgba(255,255,255,0.03)"/></svg>');
  background-size: 200px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 20px 100px;
  position: relative;
}

.hero-content {
  max-width: 600px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(212, 168, 83, 0.2);
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
  border-radius: 20px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  line-height: 1.8;
}

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

.hero-stats {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 24px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
}

.stat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  color: var(--accent);
}

.stat-value {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   通用区块样式
   ======================================== */
.section {
  padding: 80px 0;
}

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

.section-dark {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--primary);
}

.section-dark .section-title {
  color: #fff;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  margin: 0 auto 20px;
  border-radius: 2px;
}

.section-desc {
  color: var(--text-light);
  font-size: 16px;
}

.section-dark .section-desc {
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   服务卡片
   ======================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

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

.service-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.service-icon svg {
  width: 32px;
  height: 32px;
  color: #fff;
}

.service-card h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--primary);
}

.service-card p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-features {
  margin-bottom: 24px;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text);
}

.service-features li svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
  flex-shrink: 0;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 500;
  font-size: 14px;
}

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

.service-link svg {
  width: 16px;
  height: 16px;
  transition: var(--transition);
}

.service-link:hover svg {
  transform: translateX(4px);
}

/* ========================================
   数据统计
   ======================================== */
.stats-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.stats-item {
  text-align: center;
  color: #fff;
}

.stats-item .number {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent);
}

.stats-item .label {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   新闻列表
   ======================================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.news-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

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

.news-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-image svg {
  width: 64px;
  height: 64px;
  color: rgba(255, 255, 255, 0.3);
}

.news-content {
  padding: 24px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.news-category {
  padding: 4px 12px;
  background: rgba(212, 168, 83, 0.1);
  color: var(--accent);
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
}

.news-date {
  font-size: 13px;
  color: var(--text-muted);
}

.news-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--primary);
  line-height: 1.5;
}

.news-card h3:hover {
  color: var(--accent);
}

.news-excerpt {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 新闻分类筛选 */
.news-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 25px;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

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

.about-content h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--primary);
}

.about-content p {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.about-stat {
  background: #fff;
  padding: 30px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.about-stat .value {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.about-stat .label {
  font-size: 14px;
  color: var(--text-muted);
}

/* 发展历程 */
.timeline {
  position: relative;
  padding: 40px 0;
}

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

.timeline-item {
  display: flex;
  margin-bottom: 40px;
  position: relative;
}

.timeline-item:nth-child(odd) {
  flex-direction: row-reverse;
}

.timeline-item:nth-child(odd) .timeline-content {
  text-align: right;
  padding-right: 60px;
}

.timeline-item:nth-child(even) .timeline-content {
  padding-left: 60px;
}

.timeline-content {
  width: 50%;
}

.timeline-year {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent);
  color: var(--primary-dark);
  font-weight: 700;
  border-radius: 20px;
  margin-bottom: 12px;
}

.timeline-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary);
}

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

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 10px;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 4px solid #fff;
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: var(--shadow);
}

/* 团队成员 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.team-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

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

.team-avatar {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, rgba(30, 58, 95, 0.1) 0%, rgba(212, 168, 83, 0.1) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
}

.team-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--primary);
}

.team-card .title {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 12px;
}

.team-card p {
  font-size: 13px;
  color: var(--text-light);
}

/* ========================================
   联系我们
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--primary);
}

.contact-info > p {
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.8;
}

.contact-list {
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
}

.contact-item h4 {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 16px;
  color: var(--text);
  font-weight: 500;
}

.contact-item a {
  color: var(--primary);
}

.contact-item a:hover {
  color: var(--accent);
}

/* 联系表单 */
.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.contact-form h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--primary);
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  transition: var(--transition);
  background: #fff;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background: var(--primary-dark);
  color: #fff;
  padding-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-brand .logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-dark);
}

.footer-brand h3 {
  font-size: 18px;
  font-weight: 700;
}

.footer-brand span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-brand > p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.footer-social a:hover {
  background: rgba(255, 255, 255, 0.2);
}

.footer-social svg {
  width: 20px;
  height: 20px;
}

.footer-links h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-contact-item svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-item p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact-item a {
  color: #fff;
}

.footer-contact-item a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom-links a:hover {
  color: #fff;
}

/* ========================================
   悬浮联系按钮
   ======================================== */
.floating-contact {
  position: fixed;
  right: 20px;
  bottom: 100px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.floating-btn {
  width: 50px;
  height: 50px;
  background: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.floating-btn:hover {
  transform: scale(1.1);
}

.floating-btn svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.floating-btn.phone {
  background: var(--primary);
}

.floating-btn.phone svg {
  color: #fff;
}

.floating-btn.wechat {
  background: #07c160;
}

.floating-btn.wechat svg {
  color: #fff;
}

.floating-btn.email {
  background: var(--accent);
}

.floating-btn.email svg {
  color: var(--primary-dark);
}

/* 微信二维码弹出 */
.wechat-popup {
  position: absolute;
  right: 60px;
  bottom: 0;
  background: #fff;
  padding: 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: none;
  white-space: nowrap;
}

.floating-btn.wechat:hover .wechat-popup {
  display: block;
}

.wechat-popup img {
  width: 150px;
  height: 150px;
}

.wechat-popup p {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* 返回顶部 */
.back-to-top {
  width: 50px;
  height: 50px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
  color: #fff;
}

/* ========================================
   CTA区域
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 0;
  text-align: center;
  color: #fff;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================================
   页面Banner
   ======================================== */
.page-banner {
  padding-top: 80px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}

.page-banner .container {
  padding: 60px 20px 80px;
}

.page-banner-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.page-banner h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
}

.page-banner h1 span {
  color: var(--accent);
}

.page-banner p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

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

  .hero-stats {
    max-width: 500px;
    margin: 0 auto;
  }

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

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

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

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

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

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

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

  .timeline::before {
    left: 20px;
  }

  .timeline-item,
  .timeline-item:nth-child(odd) {
    flex-direction: column;
  }

  .timeline-content,
  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    width: 100%;
    text-align: left;
    padding-left: 50px;
    padding-right: 0;
  }

  .timeline-dot {
    left: 20px;
  }
}

@media (max-width: 768px) {
  .navbar-menu {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow);
  }

  .navbar-menu.active {
    display: flex;
  }

  .navbar-toggle {
    display: flex;
  }

  .navbar-contact {
    display: none;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

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

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

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .stats-item .number {
    font-size: 32px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .section-title {
    font-size: 28px;
  }

  .page-banner h1 {
    font-size: 32px;
  }

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

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

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 60px 0;
  }

  .hero .container {
    padding: 60px 16px 80px;
  }

  .stat-value {
    font-size: 28px;
  }

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

  .floating-contact {
    right: 12px;
    bottom: 80px;
  }

  .floating-btn {
    width: 44px;
    height: 44px;
  }
}

/* ========================================
   新闻详情页
   ======================================== */
.news-detail-container {
  max-width: 800px;
  margin: 0 auto;
}

.news-article {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px;
}

.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.article-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--text-muted);
}

.article-category {
  display: inline-block;
  padding: 4px 12px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.article-date,
.article-views {
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.article-content p {
  margin-bottom: 16px;
}

.article-content h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--primary);
  margin: 32px 0 16px;
}

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin: 24px 0 12px;
}

.article-content ul,
.article-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 20px 0;
}

.article-content blockquote {
  border-left: 4px solid var(--accent);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--bg-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--text-light);
}

@media (max-width: 768px) {
  .news-article {
    padding: 24px;
  }

  .article-header h1 {
    font-size: 22px;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 8px;
  }
}