/* 全局 - 高级极简 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
html, body {
  color: #333;
  background: #F5F7FA;
  line-height: 1.7;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
a {
  text-decoration: none;
  color: inherit;
}
ul {
  list-style: none;
}

/* 头部 */
.top {
  background: #0D47A1;
  color: #fff;
  text-align: center;
  padding: 6px 0;
  font-size: 13px;
}
header {
  background: #fff;
  box-shadow: 0 1px 5px rgba(0,0,0,0.03);
}
header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}
.logo {
  font-size: 24px;
  font-weight: 700;
  color: #0D47A1;
}
nav {
  display: flex;
  gap: 30px;
}
nav a {
  font-size: 15px;
  color: #333;
  font-weight: 500;
}
nav a:hover {
  color: #0D47A1;
}
.tel {
  background: #0D47A1;
  color: #fff;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
}

/* Banner */
.banner {
  position: relative;
  width: 100%;
  height: 520px;
  overflow: hidden;
}
.banner-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1565C0, #0D47A1);
  display: flex;
  align-items: center;
  opacity: 0;
  transition: 1s ease;
}
.banner-slide.active {
  opacity: 1;
}
.banner-inner {
  width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.banner-text h2 {
  font-size: 42px;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.3;
}
.banner-text h2 span {
  color: #90CAF9;
}
.banner-text p {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 30px;
  max-width: 600px;
}
.btn {
  display: inline-block;
  background: #fff;
  color: #0D47A1;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 500;
  font-size: 15px;
}
.banner-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}
.banner-dots span {
  width: 10px;
  height: 10px;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
}
.banner-dots span.active {
  background: #fff;
  width: 24px;
  border-radius: 5px;
}

/* 品牌 */
.brand {
  padding: 40px 0;
  background: #fff;
  margin-bottom: 60px;
}
.brand-title {
  text-align: center;
  font-size: 15px;
  color: #666;
  margin-bottom: 20px;
}
.brand-list {
  display: flex;
  justify-content: center;
  gap: 60px;
}
.brand-item {
  font-size: 16px;
  font-weight: 500;
  color: #0D47A1;
}

/* 模块 */
.section {
  padding: 80px 0;
}
.bg {
  background: #fff;
}
.title {
  text-align: center;
  margin-bottom: 50px;
}
.title h3 {
  font-size: 28px;
  color: #222;
  margin-bottom: 12px;
}
.title p {
  font-size: 15px;
  color: #666;
}

/* 网格 */
.grid4 {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 30px;
}
.grid3 {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 30px;
}

/* 卡片 */
.card {
  background: #fff;
  padding: 35px 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.card h4 {
  font-size: 18px;
  margin-bottom: 12px;
  color: #222;
}
.card p {
  font-size: 14px;
  color: #666;
}

/* 套餐 */
.price-card {
  background: #fff;
  padding: 50px 35px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: relative;
}
.price-card.hot {
  border: 1px solid #0D47A1;
}
.hot-tag {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: #0D47A1;
  color: #fff;
  padding: 4px 15px;
  border-radius: 20px;
  font-size: 12px;
}
.price-name {
  font-size: 18px;
  margin-bottom: 20px;
}
.price {
  font-size: 36px;
  color: #0D47A1;
  font-weight: 700;
  margin-bottom: 25px;
}
.price span {
  font-size: 14px;
  color: #666;
  font-weight: 400;
}
.price-card ul li {
  padding: 8px 0;
  font-size: 14px;
  color: #555;
}
.price-card .btn {
  margin-top: 25px;
  background: #0D47A1;
  color: #fff;
}

/* 申请 */
.apply {
  padding: 80px 0;
}
.apply-box {
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  padding: 50px;
  border-radius: 8px;
  text-align: center;
}
.apply-box h3 {
  font-size: 24px;
  margin-bottom: 30px;
}
.apply-box input {
  width: 100%;
  padding: 14px;
  margin-bottom: 15px;
  border: 1px solid #eee;
  border-radius: 4px;
  font-size: 14px;
}
.apply-box .btn {
  width: 100%;
  background: #0D47A1;
  color: #fff;
}

/* 底部 */
footer {
  background: #1A1A1A;
  color: #fff;
  padding: 60px 0 0 0;
}
.footer-cols {
  display: flex;
  justify-content: space-between;
}
.footer-col h4 {
  font-size: 16px;
  margin-bottom: 20px;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  color: #aaa;
  font-size: 14px;
}
.footer-col p {
  color: #aaa;
  font-size: 14px;
  margin-bottom: 8px;
}
.copyright {
  text-align: center;
  padding: 25px 0;
  margin-top: 40px;
  border-top: 1px solid #333;
  color: #777;
  font-size: 13px;
}