/* ====================== 全局变量 全新三色主题 ====================== */
:root {
  --main-blue: #0077ff;
  --main-red: #ff3d68;
  --main-green: #00d8a0;
  --dark-bg: #0c0e1f;
  --dark-light: #161935;
  --gray-text: #666;
  --gray-light: #eeeeee;
  --white: #ffffff;
  --text-dark: #222222;
  --text-light: #999999;
  --shadow-lg: 0 12px 45px rgba(0,119,255,0.18);
  --shadow-sm: 0 5px 15px rgba(0,0,0,0.07);
  --radius-base: 10px;
  --radius-lg: 18px;
  --gap-base: 26px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html, body {
  font-family: "Microsoft YaHei", system-ui, sans-serif;
  color: var(--text-dark);
  background: var(--white);
  overflow-x: hidden;
}
ul, ol {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
h2, h3 {
  font-weight: 600;
}
/* 全局容器 */
.hai28-wrap {
  width: 93%;
  max-width: 1360px;
  margin: 0 auto;
}
.hai28-flex-row {
  display: flex;
  align-items: center;
}
/* 栅格：手机2列、平板4列 */
.hai28-grid-2md {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-base);
}
@media (min-width: 768px) {
  .hai28-grid-4lg {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (max-width: 767px) {
  .hai28-flex-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
  }
}

/* ====================== 头部导航 hai28-header ====================== */
.hai28-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9999;
  background: rgba(12, 14, 31, 0.94);
  backdrop-filter: blur(10px);
}
.hai28-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 74px;
}
.hai28-logo-text {
  font-size: 25px;
  color: var(--white);
  font-weight: 700;
  letter-spacing: 1px;
}
/* 汉堡按钮 */
.hai28-hamburger {
  display: none;
  width: 38px;
  height: 32px;
  position: relative;
  background: transparent;
  border: none;
  cursor: pointer;
}
.hai28-bar {
  display: block;
  width: 100%;
  height: 3px;
  background: #fff;
  border-radius: 3px;
  position: absolute;
  left: 0;
  transition: 0.32s ease;
}
.hai28-bar:nth-child(1) { top: 0; }
.hai28-bar:nth-child(2) { top: 14px; }
.hai28-bar:nth-child(3) { bottom: 0; }
.hai28-hamburger.active .hai28-bar:nth-child(1) {
  transform: rotate(45deg) translate(10px, 10px);
}
.hai28-hamburger.active .hai28-bar:nth-child(2) {
  opacity: 0;
}
.hai28-hamburger.active .hai28-bar:nth-child(3) {
  transform: rotate(-45deg) translate(10px, -10px);
}
/* 桌面导航 */
.hai28-nav-list {
  display: flex;
  gap: 40px;
}
.hai28-nav-item a {
  color: rgba(255,255,255,0.86);
  font-size: 15px;
  padding: 8px 0;
  position: relative;
  transition: 0.28s;
}
.hai28-nav-item.hai28-nav-active a {
  color: var(--main-red);
}
.hai28-nav-item a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--main-red);
  transition: 0.35s;
}
.hai28-nav-item a:hover::after,
.hai28-nav-item.hai28-nav-active a::after {
  width: 100%;
}
/* 移动端导航 */
@media (max-width: 768px) {
  .hai28-hamburger {
    display: block;
  }
  #navBox {
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    background: var(--dark-bg);
    height: 0;
    overflow: hidden;
    transition: height 0.45s ease;
  }
  #navBox.nav-open {
    height: auto;
    padding: 24px 0;
  }
  .hai28-nav-list {
    flex-direction: column;
    gap: 38px !important;
    padding: 0 4%;
  }
}

/* ====================== Banner 光晕/粒子/环形 大幅强化动画 ====================== */
/* 首页Banner */
.hai28-home-banner {
  margin-top: 74px;
  min-height: 100vh;
  background: linear-gradient(145deg, var(--dark-bg) 0%, #111433 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
/* 内页Banner */
.hai28-inner-banner {
  margin-top: 74px;
  height: 390px;
  background: linear-gradient(138deg, #0b0d26, #181c40);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
/* 三色浮动光晕 超大模糊+大位移缩放 */
.hai28-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.65;
  animation: glowFloat 9.5s ease-in-out infinite alternate;
  z-index: 1;
}
.glow-blue {
  width: 660px;
  height: 660px;
  background: var(--main-blue);
  top: -240px;
  left: -180px;
}
.glow-red {
  width: 560px;
  height: 560px;
  background: var(--main-red);
  bottom: -140px;
  right: -130px;
  animation-delay: 2.4s;
}
.glow-green {
  width: 490px;
  height: 490px;
  background: var(--main-green);
  top: 34%;
  right: 16%;
  animation-delay: 4.6s;
}
.inner-glow-1 {
  width: 430px;
  height: 430px;
  background: var(--main-blue);
  top: -120px;
  left: -110px;
}
.inner-glow-2 {
  width: 340px;
  height: 340px;
  background: var(--main-green);
  bottom: -90px;
  right: 8%;
  animation-delay: 3.2s;
}
.convert-glow-a {
  width: 540px;
  height: 540px;
  background: var(--main-blue);
  top: -200px;
  left: -140px;
}
.convert-glow-b {
  width: 450px;
  height: 450px;
  background: var(--main-red);
  bottom: -120px;
  right: -90px;
  animation-delay: 2.1s;
}
.convert-glow-c {
  width: 380px;
  height: 380px;
  background: var(--main-green);
  top: 18%;
  right: 22%;
  animation-delay: 4.3s;
}
.data-glow-1 {
  width: 410px;
  height: 410px;
  background: var(--main-blue);
  top: -170px;
  left: -120px;
}
.data-glow-2 {
  width: 320px;
  height: 320px;
  background: var(--main-red);
  bottom: -90px;
  right: 4%;
  animation-delay: 2.7s;
}
@keyframes glowFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(100px, 80px) scale(1.3); }
}
/* 环形扩散动画 范围加宽 */
.hai28-ring-group {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 2;
}
.hai28-ring {
  position: absolute;
  border: 2px solid rgba(255,255,255,0.17);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  animation: ringZoom 7.5s linear infinite;
}
.ring-out {
  width: 760px;
  height: 760px;
  animation-delay: 0s;
}
.ring-mid {
  width: 590px;
  height: 590px;
  animation-delay: 2.3s;
}
.ring-inner, .ring-small {
  width: 430px;
  height: 430px;
  animation-delay: 4.5s;
}
.ring-big {
  width: 530px;
  height: 530px;
}
@keyframes ringZoom {
  0% { transform: translate(-50%,-50%) scale(0.65); opacity: 0; }
  50% { transform: translate(-50%,-50%) scale(1.35); opacity: 0.78; }
  100% { transform: translate(-50%,-50%) scale(2.0); opacity: 0; }
}
/* 粒子浮动 轨迹更长 */
.hai28-particles {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 2;
}
.hai28-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  opacity: 0.72;
  animation: dotFloat 11.5s ease infinite;
}
.particle-xl .hai28-dot { width: 9px; height: 9px; }
.particle-sm .hai28-dot { width: 4px; height: 4px; opacity: 0.52; }
@keyframes dotFloat {
  0% { transform: translate(0, 0); }
  25% { transform: translate(140px, -100px); }
  50% { transform: translate(-80px, 120px); }
  75% { transform: translate(110px, 80px); }
  100% { transform: translate(0, 0); }
}
/* Banner文字 */
.hai28-banner-text {
  position: relative;
  z-index: 3;
}
.hai28-banner-title {
  font-size: 46px;
  color: var(--white);
  margin-bottom: 18px;
  line-height: 1.32;
}
.hai28-banner-desc {
  font-size: 19px;
  color: rgba(255,255,255,0.76);
  line-height: 1.85;
  margin-bottom: 36px;
}
@media (max-width:768px) {
  .hai28-banner-title { font-size: 30px; }
  .hai28-banner-desc { font-size: 16px; }
  .hai28-inner-banner { height: 290px; }
}
/* Banner按钮组 */
.hai28-banner-btn-group, .hai28-convert-btn-group {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
/* 三色按钮样式 */
.hai28-btn-blue-solid {
  display: inline-block;
  padding: 15px 34px;
  background: var(--main-blue);
  color: #fff;
  border-radius: var(--radius-base);
  font-size: 16px;
  transition: 0.3s ease;
  box-shadow: 0 6px 22px rgba(0,119,255,0.32);
}
.hai28-btn-blue-solid:hover {
  background: #0088ff;
  transform: translateY(-4px);
}
.hai28-btn-green-hollow {
  display: inline-block;
  padding: 15px 34px;
  border: 2px solid var(--main-green);
  color: var(--main-green);
  border-radius: var(--radius-base);
  font-size: 16px;
  transition: 0.3s ease;
}
.hai28-btn-green-hollow:hover {
  background: var(--main-green);
  color: #fff;
  transform: translateY(-4px);
}
.hai28-btn-white-outline {
  display: inline-block;
  padding: 15px 34px;
  border: 2px solid #ffffff;
  color: #fff;
  border-radius: var(--radius-base);
  font-size: 16px;
  transition: 0.3s ease;
}
.hai28-btn-white-outline:hover {
  background: #fff;
  color: var(--main-blue);
  transform: translateY(-4px);
}

/* ====================== 面包屑 ====================== */
.hai28-breadcrumb-wrap {
  padding: 26px 0;
}
.hai28-breadcrumb-box {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-light);
}
.hai28-breadcrumb-icon {
  color: var(--main-red);
  font-size: 17px;
}
.hai28-breadcrumb-box a {
  color: var(--gray-text);
}
.hai28-breadcrumb-box a:hover {
  color: var(--main-blue);
}

/* ====================== 二级子导航 ====================== */
.hai28-subnav-wrap {
  margin-bottom: 42px;
}
.hai28-subnav-list {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 10px;
}
.hai28-subnav-list::-webkit-scrollbar { height: 5px; }
.hai28-subnav-list::-webkit-scrollbar-thumb { background: var(--main-blue); border-radius: 5px; }
.hai28-subnav-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  padding: 13px 24px;
  border-radius: 50px;
  background: var(--gray-light);
  font-size: 15px;
  transition: 0.3s ease;
}
.hai28-subnav-item.sub-active a {
  background: linear-gradient(90deg, var(--main-blue), var(--main-red));
  color: #fff;
}
.hai28-sub-badge {
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 14px;
  background: rgba(0,0,0,0.1);
}
.sub-active .hai28-sub-badge {
  background: rgba(255,255,255,0.28);
}

/* ====================== 通用板块基础 ====================== */
.hai28-section {
  padding: 85px 0;
}
.hai28-section-head {
  text-align: center;
  margin-bottom: 50px;
}
.hai28-section-head h2 {
  font-size: 34px;
  margin-bottom: 14px;
  color: var(--dark-bg);
}
.hai28-section-head p {
  font-size: 17px;
  color: var(--text-light);
}
@media (max-width:768px) {
  .hai28-section { padding: 55px 0; }
  .hai28-section-head h2 { font-size: 26px; }
}

/* 服务卡片 */
.hai28-service-card {
  display: block;
  padding: 32px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: 0.3s ease;
}
.hai28-service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.hai28-card-icon {
  width: 74px;
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0,119,255,0.12), rgba(255,61,104,0.12));
  border-radius: 50%;
  margin-bottom: 22px;
}
.hai28-service-card h3 {
  font-size: 21px;
  margin-bottom: 14px;
}
.hai28-service-card p {
  color: var(--text-light);
  line-height: 1.75;
  font-size: 14px;
}

/* 首页关于预览区块 */
.hai28-about-preview .hai28-about-flex {
  gap: 44px;
  align-items: center;
}
.hai28-about-img {
  flex: 1;
}
.hai28-about-text {
  flex: 1;
}
.hai28-about-text h3 {
  font-size: 27px;
  margin-bottom: 18px;
}
.hai28-about-text p {
  color: var(--text-light);
  line-height: 1.85;
  margin-bottom: 26px;
}
.hai28-about-btn-wrap a {
  padding: 13px 30px;
}

/* 数据统计深色区块 */
.hai28-data-block {
  padding: 85px 0;
  background: linear-gradient(140deg, var(--dark-bg), #171936);
  position: relative;
  overflow: hidden;
}
.hai28-data-card {
  text-align: center;
  padding: 32px 22px;
  position: relative;
  z-index: 3;
}
.hai28-data-num {
  font-size: 44px;
  font-weight: 700;
  background: linear-gradient(90deg, var(--main-red), var(--main-green));
  -webkit-background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}
.hai28-data-desc {
  color: rgba(255,255,255,0.78);
  font-size: 16px;
}
@media (max-width:768px) {
  .hai28-data-num { font-size: 32px; }
}

/* 优势/FAQ图文卡片 */
.hai28-img-card {
  display: block;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: 0.3s ease;
}
.hai28-img-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.hai28-card-img {
  height: 190px;
  overflow: hidden;
}
.hai28-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: 0.45s ease;
}
.hai28-img-card:hover .hai28-card-img img {
  transform: scale(1.1);
}
.hai28-card-text {
  padding: 26px;
}
.hai28-card-text h3 {
  font-size: 19px;
  margin-bottom: 12px;
}
.hai28-card-text p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.75;
}
.hai28-more-box {
  text-align: center;
  margin-top: 44px;
}
.hai28-view-more {
  color: var(--main-blue);
  font-size: 16px;
  font-weight: 500;
}
.hai28-view-more:hover {
  color: var(--main-red);
}

/* ====================== 新闻列表 newslist ====================== */
.hai28-news-list-wrap {
  margin-bottom: 65px;
}
.hai28-news-card-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.hai28-news-card {
  display: flex;
  gap: 26px;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: 0.3s ease;
}
.hai28-news-card:hover {
  box-shadow: var(--shadow-lg);
}
.hai28-news-imgbox {
  width: 270px;
  flex-shrink: 0;
}
.hai28-news-imgbox img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hai28-news-textbox {
  padding: 26px 26px 26px 0;
}
.hai28-news-title {
  font-size: 21px;
  margin-bottom: 12px;
}
.hai28-news-title a:hover {
  color: var(--main-blue);
}
.hai28-news-date {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 14px;
}
.hai28-news-desc {
  color: var(--gray-text);
  line-height: 1.75;
  font-size: 14px;
}
@media (max-width:768px) {
  .hai28-news-card {
    flex-direction: column;
  }
  .hai28-news-imgbox {
    width: 100%;
    height: 190px;
  }
  .hai28-news-textbox {
    padding: 0 22px 22px;
  }
}
/* 分页 */
.hai28-pagination-box {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 44px;
}
.hai28-page-btn {
  padding: 9px 18px;
  border: 1px solid var(--gray-light);
  border-radius: 6px;
  font-size: 14px;
  transition: 0.28s ease;
}
.hai28-page-btn:hover {
  background: var(--main-blue);
  color: #fff;
  border-color: var(--main-blue);
}

/* ====================== 新闻详情 news.html ====================== */
.hai28-article-wrap {
  margin-bottom: 65px;
}
.hai28-article-title {
  font-size: 34px;
  margin-bottom: 18px;
  line-height: 1.4;
}
.hai28-article-meta {
  font-size: 14px;
  color: var(--text-light);
  padding-bottom: 22px;
  border-bottom: 1px solid var(--gray-light);
  margin-bottom: 32px;
}
.hai28-article-body {
  font-size: 17px;
  line-height: 1.95;
  color: #333;
}
.hai28-article-body img {
  border-radius: var(--radius-base);
  margin: 22px auto;
}
.hai28-pre-next-box {
  margin-top: 54px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-light);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}
.hai28-pre-art, .hai28-next-art {
  font-size: 16px;
}
.hai28-pre-art a, .hai28-next-art a {
  color: var(--main-blue);
}
@media (max-width:768px) {
  .hai28-article-title { font-size: 26px; }
}

/* ====================== 富文本通用（about/service正文） ====================== */
.hai28-rich-text {
  font-size: 17px;
  line-height: 1.95;
  color: #333;
  margin-top: 32px;
}
.hai28-rich-text h3 {
  margin: 34px 0 18px;
  font-size: 23px;
}
.hai28-rich-text p {
  margin-bottom: 18px;
}
.hai28-rich-text img {
  border-radius: var(--radius-base);
  margin: 22px auto;
}

/* ====================== 底部转化区块 ====================== */
.hai28-convert-block {
  padding: 75px 0;
  background: linear-gradient(135deg, #12102c, #1a1744);
  position: relative;
  overflow: hidden;
  margin-top: 65px;
}
.hai28-convert-flex {
  justify-content: space-between;
  position: relative;
  z-index: 3;
}
.hai28-convert-title {
  font-size: 36px;
  color: #fff;
  margin-bottom: 14px;
}
.hai28-convert-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
}
@media (max-width:768px) {
  .hai28-convert-title { font-size: 26px; }
  .hai28-convert-block { padding: 55px 0; }
}

/* ====================== 页脚 ====================== */
.hai28-footer {
  background: var(--dark-bg);
  padding: 65px 0 35px;
}
.hai28-footer-flex {
  gap: 44px;
  margin-bottom: 44px;
  align-items: flex-start;
}
.hai28-footer-contact, .hai28-footer-link {
  flex: 1;
}
.hai28-contact-item {
  color: rgba(255,255,255,0.72);
  font-size: 15px;
  margin-bottom: 14px;
}
.hai28-link-label {
  color: #fff;
  font-size: 17px;
  display: block;
  margin-bottom: 18px;
}
.hai28-friend-link-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hai28-friend-link {
  color: rgba(255,255,255,0.68);
  font-size: 14px;
}
.hai28-friend-link:hover {
  color: var(--main-red);
}
.hai28-copyright-line {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 22px;
  text-align: center;
  color: var(--text-light);
  font-size: 14px;
}
.hai28-sitemap-link {
  color: var(--main-green);
  margin-left: 12px;
}
@media (max-width:768px) {
  .hai28-footer-flex { gap: 32px; }
}