* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4edf9 100%);
  color: #333;
  line-height: 1.6;
}

a {
  color: inherit;
}

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

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

/* 导航栏 */
nav {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 40px;
  margin-right: 10px;
  border-radius: 8px;
}

.logo h1,
.logo .brand {
  font-size: 1.5rem;
  color: #4a6cf7;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: #555;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: #4a6cf7;
}

.menu-toggle {
  display: none;
  border: 1px solid #dbe4ff;
  background: #fff;
  border-radius: 10px;
  width: 42px;
  height: 42px;
  cursor: pointer;
  color: #4a6cf7;
  font-size: 1.2rem;
}

/* 版块通用样式 */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #4a6cf7, #6a11cb);
  border-radius: 2px;
}

.section-title p {
  color: #7f8c8d;
  font-size: 1.1rem;
  max-width: 600px;
  margin: 20px auto 0;
}

/* 首屏板块 */
.hero {
  padding: 100px 0;
  background: linear-gradient(135deg, #eef2ff 0%, #e4edf9 100%);
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.hero-text {
  flex: 1;
}

.hero-text h1 {
  font-size: 3rem;
  color: #2c3e50;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-text p {
  font-size: 1.2rem;
  color: #7f8c8d;
  margin-bottom: 30px;
  max-width: 600px;
}

.download-btn,
.btn-primary {
  display: inline-block;
  background: linear-gradient(90deg, #4a6cf7, #6a11cb);
  color: white;
  padding: 15px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 10px 20px rgba(74, 108, 247, 0.3);
  border: none;
  cursor: pointer;
}

.download-btn:hover,
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 25px rgba(74, 108, 247, 0.4);
}

.btn-outline {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  color: #4a6cf7;
  border: 1px solid rgba(74, 108, 247, 0.45);
  background: #fff;
}

.btn-sm {
  padding: 10px 22px;
  font-size: 0.95rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  animation: float 6s ease-in-out infinite;
}

.hero-visual {
  width: min(100%, 420px);
  min-height: 280px;
  border-radius: 20px;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.7), transparent 40%),
    linear-gradient(145deg, #4a6cf7, #6a11cb 55%, #8b5cf6);
  box-shadow: 0 20px 40px rgba(74, 108, 247, 0.28);
  color: #fff;
  padding: 28px;
  animation: float 6s ease-in-out infinite;
  display: grid;
  align-content: center;
  gap: 14px;
}

.hero-visual strong {
  font-size: 1.4rem;
}

.hero-visual span {
  opacity: 0.92;
  font-size: 0.98rem;
}

@keyframes float {
  0% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0); }
}

/* 特色功能板块 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background: white;
  border-radius: 15px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(74, 108, 247, 0.15);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #eef2ff, #dbe4ff);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 30px;
  color: #4a6cf7;
}

.feature-card h3 {
  font-size: 1.5rem;
  color: #2c3e50;
  margin-bottom: 15px;
}

.feature-card p {
  color: #5f6b7a;
}

/* 平台适配板块 */
.platforms {
  background: white;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.platform-item {
  text-align: center;
  padding: 30px 20px;
  border-radius: 15px;
  background: #f8fafc;
  transition: transform 0.3s;
}

.platform-item:hover {
  transform: scale(1.05);
}

.platform-icon {
  font-size: 40px;
  margin-bottom: 15px;
  color: #4a6cf7;
}

.platform-item h3 {
  color: #2c3e50;
  margin-bottom: 6px;
}

.platform-item p {
  color: #7f8c8d;
  font-size: 0.95rem;
}

/* 用户评价板块 */
.testimonials {
  background: linear-gradient(135deg, #eef2ff 0%, #e4edf9 100%);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.testimonial-card {
  background: white;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.testimonial-header {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #eef2ff;
  margin-right: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #4a6cf7;
  font-weight: bold;
}

.testimonial-info h4 {
  color: #2c3e50;
  margin-bottom: 5px;
}

.testimonial-info p {
  color: #7f8c8d;
  font-size: 0.9rem;
}

.testimonial-card > p {
  color: #4b5563;
}

/* 同步服务板块 */
.sync-services {
  background: white;
}

.sync-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.sync-card {
  background: linear-gradient(135deg, #eef2ff, #dbe4ff);
  border-radius: 15px;
  padding: 30px;
  text-align: center;
  transition: transform 0.3s;
}

.sync-card:hover {
  transform: translateY(-5px);
}

.sync-icon {
  font-size: 50px;
  color: #4a6cf7;
  margin-bottom: 20px;
}

.sync-card h3 {
  color: #2c3e50;
  margin-bottom: 10px;
}

.sync-card p {
  color: #5f6b7a;
}

/* 文章列表 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.article-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fff;
  border-radius: 15px;
  padding: 26px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  min-height: 200px;
  transition: transform 0.25s, box-shadow 0.25s;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(74, 108, 247, 0.14);
}

.article-card .meta {
  color: #7f8c8d;
  font-size: 0.88rem;
}

.article-card h3 {
  color: #2c3e50;
  font-size: 1.15rem;
  line-height: 1.4;
}

.article-card p {
  color: #5f6b7a;
  flex: 1;
}

/* 常见问题板块 */
.faq {
  background: linear-gradient(135deg, #eef2ff 0%, #e4edf9 100%);
}

.faq-container {
  max-width: 800px;
  margin: 50px auto 0;
}

.faq-item {
  background: white;
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.faq-question {
  padding: 20px;
  background: #f8fafc;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  color: #2c3e50;
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.show {
  padding: 20px;
  max-height: 600px;
}

.faq-answer p {
  color: #4b5563;
}

/* 内页 */
.page-hero {
  padding: 56px 0 28px;
  background: linear-gradient(135deg, #eef2ff 0%, #e4edf9 100%);
}

.page-hero h1 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: #2c3e50;
  margin: 10px 0 12px;
}

.page-hero p {
  color: #7f8c8d;
  max-width: 48em;
}

.breadcrumb {
  color: #7f8c8d;
  font-size: 0.92rem;
}

.breadcrumb a {
  text-decoration: none;
  color: #4a6cf7;
}

.download-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.download-table th,
.download-table td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid #eef2ff;
}

.download-table th {
  background: #f8fafc;
  color: #2c3e50;
}

.article-body {
  max-width: 780px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}

.article-body h2 {
  margin: 28px 0 12px;
  font-size: 1.35rem;
  color: #2c3e50;
}

.article-body p,
.article-body li {
  color: #333;
  margin-bottom: 14px;
}

.article-body ul {
  padding-left: 1.2em;
  margin-bottom: 18px;
}

.article-update {
  margin: 18px 0 28px;
  padding: 14px 16px;
  border-left: 3px solid #4a6cf7;
  background: #eef2ff;
  border-radius: 0 10px 10px 0;
  color: #334155;
  font-size: 0.95rem;
}

.map-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.map-card {
  background: #fff;
  border-radius: 15px;
  padding: 26px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.map-card h3 {
  color: #2c3e50;
  margin-bottom: 14px;
}

.map-card ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.map-card a {
  color: #4a6cf7;
  text-decoration: none;
}

.map-card a:hover {
  text-decoration: underline;
}

/* 页脚 */
footer {
  background: #2c3e50;
  color: white;
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h3 {
  color: white;
  margin-bottom: 20px;
  font-size: 1.2rem;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: white;
}

.copyright {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #34495e;
  color: #bdc3c7;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero-content {
    flex-direction: column;
  }

  .hero-text h1 {
    font-size: 2.2rem;
  }

  .section {
    padding: 60px 0;
  }

  .section-title h2 {
    font-size: 2rem;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    display: none;
  }

  .nav-content.open .nav-links {
    display: flex;
    position: absolute;
    left: 0;
    right: 0;
    top: 58px;
    flex-direction: column;
    align-items: flex-start;
    background: #fff;
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    gap: 14px;
  }

  .download-table th:nth-child(3),
  .download-table td:nth-child(3) {
    display: none;
  }
}