/* ========================================
   飞博共创门户综合网站系统 - 全局样式
   色调：蓝色科技风
   ======================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: #333;
  background: #f5f7fa;
  line-height: 1.6;
  min-width: 320px;
}

a {
  color: #1a6dd4;
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: #0d4ea6;
}

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

ul, ol {
  list-style: none;
}

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

/* ========================================
   Header & Navigation
   ======================================== */
.header {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #1a6dd4;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #1a6dd4, #4a9eff);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
}

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

.nav a {
  padding: 8px 20px;
  color: #555;
  font-size: 15px;
  border-radius: 4px;
  transition: all 0.3s;
}

.nav a:hover,
.nav a.active {
  color: #1a6dd4;
  background: #eef4fc;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: #555;
  cursor: pointer;
  padding: 8px;
}

/* ========================================
   Banner / Hero Section
   ======================================== */
.banner {
  position: relative;
  overflow: hidden;
  height: 420px;
}

.banner-slides {
  display: flex;
  transition: transform 0.6s ease;
  height: 100%;
}

.banner-slide {
  min-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  padding: 40px 20px;
}

.banner-slide:nth-child(1) {
  background: linear-gradient(135deg, rgba(10,61,124,0.6), rgba(26,109,212,0.5)), url('../images/banner-1.jpg') center/cover no-repeat;
}

.banner-slide:nth-child(2) {
  background: linear-gradient(135deg, rgba(13,78,166,0.6), rgba(40,120,216,0.5)), url('../images/banner-2.jpg') center/cover no-repeat;
}

.banner-slide:nth-child(3) {
  background: linear-gradient(135deg, rgba(6,51,102,0.6), rgba(21,101,192,0.5)), url('../images/banner-3.jpg') center/cover no-repeat;
}

.banner-content h1 {
  font-size: 38px;
  margin-bottom: 16px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.banner-content p {
  font-size: 18px;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.banner-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}

.banner-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  border: none;
  transition: background 0.3s;
}

.banner-dot.active {
  background: #fff;
}

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

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 28px;
  color: #1a1a1a;
  margin-bottom: 10px;
}

.section-title p {
  color: #888;
  font-size: 15px;
}

.section-title::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, #1a6dd4, #4a9eff);
  margin: 15px auto 0;
  border-radius: 2px;
}

/* ========================================
   News Cards (Homepage)
   ======================================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.news-card-img {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 36px;
}

.news-card-img.tech { background: linear-gradient(135deg, #1565c0, #42a5f5); }
.news-card-img.industry { background: linear-gradient(135deg, #2e7d32, #66bb6a); }
.news-card-img.company { background: linear-gradient(135deg, #e65100, #ff9800); }
.news-card-img.policy { background: linear-gradient(135deg, #6a1b9a, #ab47bc); }

.news-card-body {
  padding: 20px;
}

.news-card-tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 3px;
  margin-bottom: 8px;
}

.tag-tech { background: #e3f2fd; color: #1565c0; }
.tag-industry { background: #e8f5e9; color: #2e7d32; }
.tag-company { background: #fff3e0; color: #e65100; }
.tag-policy { background: #f3e5f5; color: #6a1b9a; }

.news-card-title {
  font-size: 17px;
  color: #1a1a1a;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-title a {
  color: #1a1a1a;
}

.news-card-title a:hover {
  color: #1a6dd4;
}

.news-card-excerpt {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.news-card-meta {
  font-size: 13px;
  color: #aaa;
}

/* ========================================
   Company Intro (Homepage)
   ======================================== */
.intro-section {
  background: #fff;
}

.intro-content {
  display: flex;
  align-items: center;
  gap: 50px;
}

.intro-text {
  flex: 1;
}

.intro-text h3 {
  font-size: 22px;
  color: #1a1a1a;
  margin-bottom: 16px;
}

.intro-text p {
  font-size: 15px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 12px;
}

.intro-image {
  flex: 1;
  height: 300px;
  background: linear-gradient(135deg, #1a6dd4, #4a9eff);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 48px;
}

.intro-stats {
  display: flex;
  gap: 40px;
  margin-top: 24px;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 32px;
  font-weight: 700;
  color: #1a6dd4;
}

.stat-label {
  font-size: 14px;
  color: #888;
  margin-top: 4px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: #1a2332;
  color: #ccc;
  padding: 50px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid #2a3a4e;
}

.footer-title {
  font-size: 16px;
  color: #fff;
  margin-bottom: 16px;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.8;
}

.footer-links a {
  display: block;
  color: #aab;
  font-size: 14px;
  padding: 4px 0;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: #4a9eff;
}

.footer-contact p {
  font-size: 14px;
  padding: 4px 0;
}

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  font-size: 13px;
  color: #778;
}

/* ========================================
   Breadcrumb
   ======================================== */
.breadcrumb {
  padding: 16px 0;
  font-size: 14px;
  color: #888;
}

.breadcrumb a {
  color: #888;
}

.breadcrumb a:hover {
  color: #1a6dd4;
}

.breadcrumb span {
  margin: 0 8px;
  color: #ccc;
}

/* ========================================
   News List Page
   ======================================== */
.page-banner {
  background: linear-gradient(135deg, rgba(10,61,124,0.65), rgba(26,109,212,0.55)), url('../images/page-banner.jpg') center/cover no-repeat;
  padding: 50px 0;
  text-align: center;
  color: #fff;
}

.page-banner h1 {
  font-size: 32px;
  margin-bottom: 10px;
}

.page-banner p {
  font-size: 16px;
  opacity: 0.8;
}

.filter-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 8px 24px;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 20px;
  font-size: 14px;
  color: #666;
  cursor: pointer;
  transition: all 0.3s;
}

.filter-tab:hover,
.filter-tab.active {
  background: #1a6dd4;
  color: #fff;
  border-color: #1a6dd4;
}

.news-list-item {
  display: flex;
  gap: 24px;
  background: #fff;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: box-shadow 0.3s;
}

.news-list-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.news-list-thumb {
  width: 200px;
  height: 130px;
  border-radius: 6px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 28px;
}

.news-list-body {
  flex: 1;
}

.news-list-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.news-list-body h3 a {
  color: #1a1a1a;
}

.news-list-body h3 a:hover {
  color: #1a6dd4;
}

.news-list-body .excerpt {
  font-size: 14px;
  color: #888;
  line-height: 1.7;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-list-body .meta {
  font-size: 13px;
  color: #aaa;
  display: flex;
  gap: 20px;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: 4px;
  font-size: 14px;
  border: 1px solid #e0e0e0;
  color: #666;
  transition: all 0.3s;
}

.pagination a:hover {
  border-color: #1a6dd4;
  color: #1a6dd4;
}

.pagination .active {
  background: #1a6dd4;
  color: #fff;
  border-color: #1a6dd4;
}

/* ========================================
   News Detail Page
   ======================================== */
.article-container {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-radius: 8px;
  padding: 40px 50px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.article-header {
  text-align: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eee;
}

.article-header h1 {
  font-size: 26px;
  color: #1a1a1a;
  line-height: 1.5;
  margin-bottom: 16px;
}

.article-meta {
  font-size: 14px;
  color: #999;
  display: flex;
  justify-content: center;
  gap: 24px;
}

.article-content {
  font-size: 16px;
  line-height: 2;
  color: #444;
}

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

.article-content h2 {
  font-size: 20px;
  color: #1a1a1a;
  margin: 30px 0 15px;
  padding-left: 12px;
  border-left: 4px solid #1a6dd4;
}

.article-content h3 {
  font-size: 18px;
  color: #333;
  margin: 24px 0 12px;
}

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

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

.article-content ol li {
  list-style: decimal;
}

.article-content blockquote {
  border-left: 4px solid #1a6dd4;
  background: #f5f9ff;
  padding: 16px 20px;
  margin: 16px 0;
  color: #555;
  border-radius: 0 6px 6px 0;
}

/* Related Articles */
.related-articles {
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid #eee;
}

.related-articles h3 {
  font-size: 18px;
  margin-bottom: 16px;
  color: #1a1a1a;
}

.related-list a {
  display: block;
  padding: 10px 0;
  color: #555;
  border-bottom: 1px dashed #eee;
  font-size: 15px;
}

.related-list a:hover {
  color: #1a6dd4;
}

/* ========================================
   About Page
   ======================================== */
.about-intro {
  display: flex;
  gap: 50px;
  align-items: flex-start;
}

.about-text {
  flex: 1;
}

.about-text p {
  font-size: 15px;
  color: #666;
  line-height: 1.9;
  margin-bottom: 14px;
}

.about-visual {
  flex: 1;
  min-height: 300px;
  background: linear-gradient(135deg, #1a6dd4, #4a9eff);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 48px;
}

.timeline {
  position: relative;
  padding-left: 30px;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #1a6dd4, #4a9eff);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding: 0 0 30px 30px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 15px;
  height: 15px;
  background: #1a6dd4;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px #1a6dd4;
}

.timeline-year {
  font-size: 18px;
  font-weight: 700;
  color: #1a6dd4;
  margin-bottom: 6px;
}

.timeline-desc {
  font-size: 15px;
  color: #666;
  line-height: 1.6;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.value-card {
  background: #fff;
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s;
}

.value-card:hover {
  transform: translateY(-4px);
}

.value-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #1a6dd4, #4a9eff);
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
}

.value-card h3 {
  font-size: 18px;
  color: #1a1a1a;
  margin-bottom: 10px;
}

.value-card p {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
}

/* ========================================
   About Visual Image Fallback
   ======================================== */
.about-visual {
  position: relative;
  overflow: hidden;
}

.about-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  position: absolute;
  top: 0;
  left: 0;
}

.about-visual .about-visual-text {
  display: none;
}

.about-visual.about-visual-fallback .about-visual-text {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

/* ========================================
   Team Section
   ======================================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.team-card {
  background: #fff;
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s;
}

.team-card:hover {
  transform: translateY(-4px);
}

.team-avatar {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #1a6dd4, #4a9eff);
  border-radius: 50%;
  margin: 0 auto 16px;
}

.team-card h3 {
  font-size: 18px;
  color: #1a1a1a;
  margin-bottom: 6px;
}

.team-role {
  font-size: 14px;
  color: #1a6dd4;
  font-weight: 600;
  margin-bottom: 10px;
}

.team-desc {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
}

/* ========================================
   Contact Page
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info-card {
  background: #fff;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  margin-bottom: 20px;
}

.contact-info-card h3 {
  font-size: 18px;
  color: #1a1a1a;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid #1a6dd4;
  display: inline-block;
}

.contact-info-card p {
  font-size: 15px;
  color: #666;
  padding: 8px 0;
  line-height: 1.6;
}

.contact-info-card .label {
  color: #333;
  font-weight: 600;
}

.contact-form {
  background: #fff;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.contact-form h3 {
  font-size: 18px;
  color: #1a1a1a;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: #555;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #1a6dd4;
  box-shadow: 0 0 0 3px rgba(26, 109, 212, 0.1);
}

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

.btn {
  display: inline-block;
  padding: 12px 36px;
  background: linear-gradient(135deg, #1a6dd4, #4a9eff);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  cursor: pointer;
  transition: opacity 0.3s;
}

.btn:hover {
  opacity: 0.9;
}

.map-placeholder {
  height: 300px;
  background: #e8eef5;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 16px;
  margin-top: 30px;
}

/* ========================================
   More Link
   ======================================== */
.more-link {
  text-align: center;
  margin-top: 30px;
}

.more-link a {
  display: inline-block;
  padding: 10px 30px;
  border: 1px solid #1a6dd4;
  border-radius: 4px;
  color: #1a6dd4;
  font-size: 14px;
  transition: all 0.3s;
}

.more-link a:hover {
  background: #1a6dd4;
  color: #fff;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .header .container {
    height: 60px;
  }

  .nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .nav.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .banner {
    height: 280px;
  }

  .banner-content h1 {
    font-size: 24px;
  }

  .banner-content p {
    font-size: 14px;
  }

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

  .intro-content {
    flex-direction: column;
  }

  .intro-image {
    width: 100%;
    height: 200px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .news-list-item {
    flex-direction: column;
  }

  .news-list-thumb {
    width: 100%;
    height: 160px;
  }

  .about-intro {
    flex-direction: column;
  }

  .about-visual {
    width: 100%;
    min-height: 200px;
  }

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

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

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

  .article-container {
    padding: 24px 20px;
  }

  .article-header h1 {
    font-size: 20px;
  }

  .intro-stats {
    flex-wrap: wrap;
    gap: 20px;
  }

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

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

/* ========================================
   服务优势模块
   ======================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border-radius: 8px;
  padding: 36px 24px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #1a6dd4, #4a9eff);
  border-radius: 50%;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 26px;
}

.service-card h3 {
  font-size: 17px;
  color: #1a1a1a;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
}

/* ========================================
   合作伙伴模块
   ======================================== */
.partners-section {
  background: #f0f2f5;
  padding: 60px 0;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.partner-item {
  background: #fff;
  border-radius: 8px;
  padding: 28px 16px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: transform 0.3s, box-shadow 0.3s;
}

.partner-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.partner-item .partner-logo {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e8eef5, #f5f7fa);
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #1a6dd4;
  border: 2px solid #e0e8f0;
}

.partner-item .partner-name {
  font-size: 13px;
  color: #555;
  font-weight: 500;
}

/* ========================================
   图片相关
   ======================================== */
.news-card-img img,
.news-list-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.banner-slide {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* ========================================
   数据统计动画
   ======================================== */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.stat-num {
  animation: countUp 0.8s ease-out both;
}

.stat-item:nth-child(2) .stat-num { animation-delay: 0.15s; }
.stat-item:nth-child(3) .stat-num { animation-delay: 0.3s; }
.stat-item:nth-child(4) .stat-num { animation-delay: 0.45s; }

/* ========================================
   加载状态
   ======================================== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  color: #999;
  font-size: 15px;
}

.loading::before {
  content: "";
  width: 24px;
  height: 24px;
  border: 3px solid #e0e0e0;
  border-top-color: #1a6dd4;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 10px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================
   Responsive - 合作伙伴 & 服务优势 (小屏)
   ======================================== */
@media (max-width: 480px) {
  .services-grid {
    grid-template-columns: 1fr;
  }

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

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