/* ========== 全局重置 + 双色主题变量 站群一键换色 ========== */
:root {
  --color-main: #165DFF;
  --color-assist: #FF4D4F;
  --color-white: #ffffff;
  --color-dark: #111827;
  --color-gray: #6B7280;
  --color-light: #F3F4F6;
  --transition-base: all 0.3s ease;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  vertical-align: middle;
}
body {
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--color-dark);
  background: #fff;
  overflow-x: hidden;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* ========== 头部导航 nav ========== */
.top-nav {
  width: 100%;
  background: var(--color-dark);
  position: relative;
  z-index: 99;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-white);
}
.menu-list {
  display: flex;
  gap: 32px;
}
.menu-item a {
  color: #ccc;
  font-size: 15px;
  transition: var(--transition-base);
  padding: 8px 0;
  position: relative;
}
.menu-item.active a {
  color: var(--color-assist);
}
.menu-item a:hover {
  color: var(--color-assist);
}
.menu-item.active a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-assist);
}

/* ========== 首页首屏Banner 强动态光效 ========== */
.banner-box {
  width: 100%;
  min-height: 620px;
  background: linear-gradient(135deg, var(--color-main), #0E3492);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.light-sweep-1 {
  position: absolute;
  top: 0;
  left: -120%;
  width: 80%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  animation: sweepL 7s linear infinite;
}
.light-sweep-2 {
  position: absolute;
  top: 0;
  right: -120%;
  width: 80%;
  height: 100%;
  background: linear-gradient(270deg, transparent, rgba(255,77,79,0.15), transparent);
  animation: sweepR 9s linear infinite;
}
.light-particle span {
  position: absolute;
  width: 6px;
  height: 6px;
  background: rgba(255,255,255,0.6);
  border-radius: 50%;
  animation: float 12s infinite linear;
}
.light-particle span:nth-child(1) { top:15%; left:8%; animation-delay:0s; }
.light-particle span:nth-child(2) { top:35%; left:18%; animation-delay:1.2s; }
.light-particle span:nth-child(3) { top:60%; left:10%; animation-delay:2.4s; }
.light-particle span:nth-child(4) { top:22%; left:75%; animation-delay:3.6s; }
.light-particle span:nth-child(5) { top:70%; left:82%; animation-delay:4.8s; }
.light-ring {
  position: absolute;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  animation: ringRotate 20s linear infinite;
}
.banner-content {
  position: relative;
  z-index: 2;
  color: var(--color-white);
}
.banner-title1 {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 16px;
}
.banner-desc {
  font-size: 18px;
  line-height: 1.8;
  margin-bottom: 36px;
  opacity: 0.92;
}
.banner-btn-group {
  display: flex;
  gap: 20px;
}
.btn-main {
  padding: 14px 36px;
  background: var(--color-assist);
  color: #fff;
  border-radius: 50px;
  font-weight: 500;
  transition: var(--transition-base);
  box-shadow: 0 0 24px rgba(255,77,79,0.4);
}
.btn-main:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 36px rgba(255,77,79,0.6);
}
.btn-line {
  padding: 14px 36px;
  border: 1px solid #fff;
  color: #fff;
  border-radius: 50px;
  transition: var(--transition-base);
}
.btn-line:hover {
  background: #fff;
  color: var(--color-main);
  transform: translateY(-4px);
}

/* ========== 内页通用page-banner ========== */
.page-banner {
  width: 100%;
  height: 260px;
  background: linear-gradient(135deg, var(--color-main), #0E3492);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.page-banner .light-sweep-1,
.page-banner .light-particle,
.page-banner .light-ring {
  scale: 0.6;
}
.page-banner-text {
  color: #fff;
  position: relative;
  z-index: 2;
}
.page-banner-text h1 {
  font-size: 36px;
  margin-bottom: 10px;
}
.page-banner-text p {
  font-size: 16px;
  opacity: 0.9;
}

/* ========== 面包屑 ========== */
.bread {
  padding: 24px 0;
  font-size: 14px;
  color: var(--color-gray);
}
.bread a {
  color: var(--color-main);
}

/* ========== 二级子导航 sub-nav ========== */
.sub-nav {
  padding: 10px 0 30px;
}
.sub-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.sub-nav-item a {
  padding: 10px 22px;
  border-radius: 6px;
  border:1px solid #E5E7EB;
  transition: var(--transition-base);
  display: inline-block;
}
.sub-nav-item.active a {
  background: var(--color-main);
  color: #fff;
  border-color: var(--color-main);
}
.sub-nav-badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  border-radius: 12px;
  margin-left: 6px;
}
.sub-nav-item.active .sub-nav-badge {
  background: #fff;
  color: var(--color-main);
}
.sub-nav-item:not(.active) .sub-nav-badge {
  background: var(--color-main);
  color: #fff;
}

/* ========== 首页数据统计区 ========== */
.data-box {
  width: 100%;
  padding: 70px 0;
  background: linear-gradient(135deg, #0F2A68, var(--color-main));
  position: relative;
  overflow: hidden;
  margin: 60px 0;
}
.data-box .light-sweep-1 {
  animation-duration:8s;
}
.data-box .light-particle span {
  background: rgba(255,255,255,0.45);
}
.data-list {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 30px;
  position: relative;
  z-index:2;
  color:#fff;
  text-align:center;
}
.data-num {
  font-size: 42px;
  font-weight:700;
  margin-bottom:10px;
  animation: dataPulse 3s ease infinite alternate;
}
.data-txt {
  font-size:16px;
  opacity:0.9;
}

/* ========== 通用区块标题 ========== */
.section-head {
  text-align:center;
  margin-bottom:50px;
}
.section-head h2 {
  font-size:32px;
  color:var(--color-dark);
  margin-bottom:12px;
}
.section-head p {
  color:var(--color-gray);
  font-size:16px;
}

/* ========== 服务卡片 service-card ========== */
.service-grid {
  display:grid;
  grid-template-columns: repeat(4,1fr);
  gap:26px;
  margin-bottom:70px;
}
.service-card {
  display:block;
  padding:30px 20px;
  border:1px solid #E5E7EB;
  border-radius:10px;
  text-align:center;
  transition:var(--transition-base);
}
.service-card:hover {
  border-color:var(--color-main);
  transform: translateY(-6px);
  box-shadow:0 12px 30px rgba(22,93,255,0.12);
}
.service-icon {
  width:70px;
  height:70px;
  margin:0 auto 20px;
}
.service-card h3 {
  font-size:20px;
  margin-bottom:12px;
}
.service-card p {
  color:var(--color-gray);
  font-size:14px;
  line-height:1.7;
}

/* ========== 图文四格卡片（优势/FAQ共用） ========== */
.card-grid {
  display:grid;
  grid-template-columns: repeat(4,1fr);
  gap:26px;
  margin-bottom:40px;
}
.adv-card {
  border:1px solid #E5E7EB;
  border-radius:10px;
  overflow:hidden;
  transition:var(--transition-base);
  display:block;
}
.adv-card:hover {
  transform: translateY(-6px);
  box-shadow:0 12px 30px rgba(22,93,255,0.12);
}
.card-img {
  width:100%;
  height:160px;
  object-fit:cover;
}
.card-text {
  padding:20px;
}
.card-text h3 {
  font-size:18px;
  margin-bottom:10px;
}
.card-text p {
  font-size:14px;
  color:var(--color-gray);
  line-height:1.6;
}
.more-box {
  text-align:center;
  margin-bottom:70px;
}
.more-link {
  color:var(--color-main);
  font-weight:500;
}

/* ========== 资讯列表 newslist ========== */
.news-list {
  margin-bottom:40px;
}
.news-item {
  display:flex;
  gap:24px;
  padding:24px 0;
  border-bottom:1px solid #E5E7EB;
}
.news-img {
  width:220px;
  height:140px;
  object-fit:cover;
  border-radius:6px;
}
.news-text h2 {
  font-size:20px;
  margin-bottom:10px;
}
.news-time {
  font-size:13px;
  color:var(--color-gray);
  margin-bottom:10px;
}
.news-desc {
  font-size:14px;
  color:var(--color-gray);
  line-height:1.7;
}
.page-box {
  display:flex;
  gap:10px;
  justify-content:center;
  padding:30px 0;
}
.page-box a {
  padding:8px 14px;
  border:1px solid #E5E7EB;
  border-radius:4px;
}

/* ========== 文章详情 news-detail ========== */
.detail-box {
  padding-bottom:70px;
}
.detail-title {
  font-size:30px;
  margin-bottom:16px;
}
.detail-time {
  color:var(--color-gray);
  font-size:14px;
  margin-bottom:30px;
  padding-bottom:16px;
  border-bottom:1px solid #E5E7EB;
}
.detail-body {
  line-height:1.9;
  font-size:16px;
  color:#333;
}
.page-pre-next {
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid #E5E7EB;
  display:flex;
  justify-content:space-between;
  color:var(--color-gray);
  font-size:14px;
}

/* ========== 单页/服务内容正文 ========== */
.content-box {
  line-height:1.9;
  font-size:16px;
  color:#333;
  padding-bottom:70px;
}

/* ========== 底部转化行动区 强动态光效 ========== */
.action-box {
  width:100%;
  padding:90px 0;
  background: linear-gradient(135deg, #0A2055, var(--color-main));
  position:relative;
  overflow:hidden;
  margin-top:60px;
}
.action-box .light-sweep-1 {
  animation-duration:6s;
}
.action-box .light-sweep-2 {
  animation-duration:8s;
}
.action-box .light-particle span {
  background: rgba(255,255,255,0.5);
}
.action-inner {
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  color:#fff;
  gap:30px;
}
.action-text h2 {
  font-size:34px;
  margin-bottom:12px;
}
.action-text p {
  font-size:17px;
  opacity:0.9;
}
.action-btns {
  display:flex;
  gap:18px;
  flex-wrap: wrap;
}
.action-btn-1 {
  padding:15px 38px;
  background:var(--color-assist);
  color:#fff;
  border-radius:50px;
  font-weight:500;
  box-shadow:0 0 30px rgba(255,77,79,0.4);
  transition:var(--transition-base);
}
.action-btn-1:hover {
  transform: translateY(-5px);
  box-shadow:0 0 42px rgba(255,77,79,0.65);
}
.action-btn-2 {
  padding:15px 38px;
  background:#fff;
  color:var(--color-main);
  border-radius:50px;
  font-weight:500;
  transition:var(--transition-base);
}
.action-btn-2:hover {
  transform: translateY(-5px);
  box-shadow:0 0 30px rgba(255,255,255,0.3);
}

/* ========== 页脚 footer ========== */
.footer-box {
  background:var(--color-dark);
  color:#ccc;
  padding:60px 0 30px;
}
.footer-main {
  display:flex;
  justify-content:space-between;
  margin-bottom:40px;
  gap:30px;
}
.footer-contact h4 {
  color:#fff;
  font-size:18px;
  margin-bottom:20px;
}
.footer-contact p {
  line-height:2;
  font-size:14px;
}
.footer-link span {
  color:#fff;
  margin-right:8px;
}
.footer-link a {
  margin-right:12px;
  font-size:14px;
  color:#ccc;
}
.copyright {
  border-top:1px solid #222;
  padding-top:20px;
  text-align:center;
  font-size:14px;
}
.copyright a {
  color:var(--color-assist);
  margin-left:10px;
}

/* ========== 动画关键帧 ========== */
@keyframes sweepL {
  0% { left: -120%; }
  100% { left: 120%; }
}
@keyframes sweepR {
  0% { right: -120%; }
  100% { right: 120%; }
}
@keyframes float {
  0% { transform: translate(0,0) scale(1); opacity:0; }
  20% { opacity:1; }
  80% { opacity:1; }
  100% { transform: translate(120px,-180px) scale(0); opacity:0; }
}
@keyframes ringRotate {
  0% { transform: translate(-50%,-50%) rotate(0deg); }
  100% { transform: translate(-50%,-50%) rotate(360deg); }
}
@keyframes dataPulse {
  0% { transform: scale(1); }
  100% { transform: scale(1.06); }
}

/* ======================================
   移动端响应式适配（新增完整代码）
====================================== */
/* 平板 1024px以下 */
@media screen and (max-width: 1024px) {
  .banner-title { font-size: 36px; }
  .data-list { grid-template-columns: repeat(2, 1fr); }
  .service-grid, .card-grid { grid-template-columns: repeat(2,1fr); }
  .action-inner { flex-direction: column; text-align: center; }
  .action-btns { justify-content: center; }
  .footer-main { flex-direction: column; }
}

/* 手机横屏 768px以下 */
@media screen and (max-width: 768px) {
  .nav-wrap { height: auto; flex-direction: column; padding:15px 0; gap:15px; }
  .menu-list { flex-wrap: wrap; justify-content: center; gap:16px; }
  .banner-box { min-height: 420px; }
  .banner-title { font-size: 28px; }
  .banner-desc { font-size: 16px; }
  .banner-btn-group { flex-direction: column; }
  .btn-main, .btn-line { width: 100%; text-align: center; }
  .page-banner { height: 200px; }
  .page-banner-text h1 { font-size:26px; }
  .section-head h2 { font-size:26px; }
  .action-text h2 { font-size:26px; }
  .news-item { flex-direction: column; }
  .news-img { width:100%; height:200px; }
  .detail-title { font-size:24px; }
  .light-ring { width: 300px; height:300px; }
}

/* 手机竖屏 480px以下 */
@media screen and (max-width: 480px) {
  .banner-title { font-size: 24px; }
  .data-list { grid-template-columns: 1fr; }
  .service-grid, .card-grid { grid-template-columns: 1fr; }
  .data-num { font-size:32px; }
  .sub-nav-list { gap:8px; }
  .sub-nav-item a { padding:8px 14px; font-size:13px; }
  .action-box { padding:60px 0; }
  .action-btn-1, .action-btn-2 { width:100%; text-align:center; }
  .page-box { flex-wrap: wrap; }
}