/* 三色主题：酒红主 #990033 / 金色辅助 #FFC107 / 墨绿点缀 #009667 */
:root {
  --c1: #990033;    /* 主色酒红 */
  --c2: #FFC107;    /* 金色高亮 */
  --c3: #009667;    /* 墨绿光效点缀 */
  --dark-bg: #160910;
  --white: #ffffff;
  --text-gray: #9499a3;
  --light-gray: #e8e8e8;
  --base-trans: all 0.3s ease;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul { list-style: none; }
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
body {
  font-family: system-ui, sans-serif;
  color: #222;
  background: #fff;
  overflow-x: hidden;
}
.wrap {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 15px;
}

/* 头部导航 nav4 */
.nav4 {
  width: 100%;
  background: var(--dark-bg);
  z-index: 999;
}
.nav-row {
  height: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo-name {
  font-size: 23px;
  font-weight: bold;
  color: var(--white);
}
.menu-list4 {
  display: flex;
  gap: 30px;
}
.menu-item4 a {
  color: #ccc;
  font-size: 15px;
  padding: 6px 0;
  position: relative;
  transition: var(--base-trans);
}
.menu-item4.active a {
  color: var(--c2);
}
.menu-item4.active a::after {
  content: "";
  width: 100%;
  height: 2px;
  background: var(--c2);
  position: absolute;
  bottom: 0; left: 0;
}
.menu-item4 a:hover {
  color: var(--c2);
}

/* 首页首屏 banner4 大幅动态光效 */
.banner4 {
  width: 100%;
  min-height: 650px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle 320px at 12% 15%, rgba(153,0,51,0.9), transparent),
    radial-gradient(circle 280px at 88% 20%, rgba(255,193,7,0.85), transparent),
    radial-gradient(circle 300px at 50% 82%, rgba(0,150,103,0.8), transparent),
    linear-gradient(145deg, #290c18, var(--dark-bg));
}
/* 三层流动光带 幅度超大 */
.light-flow1 {
  position: absolute;
  left: -200%;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: flowBigL 5s linear infinite;
}
.light-flow2 {
  position: absolute;
  right: -200%;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(270deg, transparent, rgba(255,193,7,0.16), transparent);
  animation: flowBigR 7s linear infinite;
}
.point-box span {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.7);
  animation: pointFloatBig 14s linear infinite;
}
.point-box span:nth-child(1) {top:10%;left:7%;animation-delay:0s;}
.point-box span:nth-child(2) {top:36%;left:19%;animation-delay:1.6s;}
.point-box span:nth-child(3) {top:70%;left:10%;animation-delay:3.2s;}
.point-box span:nth-child(4) {top:24%;left:76%;animation-delay:4.8s;}
.point-box span:nth-child(5) {top:66%;left:83%;animation-delay:6.4s;}
.rotate-ring {
  width: 620px;
  height: 620px;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  animation: ringSpinSlow 25s linear infinite;
}
.banner-text-wrap {
  position: relative;
  z-index: 2;
  color: var(--white);
}
.big-p-title {
  font-size: 48px;
  font-weight: bold;
  margin-bottom: 18px;
}
.big-desc-txt {
  font-size: 19px;
  line-height: 1.9;
  margin-bottom: 40px;
  opacity: 0.94;
}
.banner-btn-row {
  display: flex;
  gap: 22px;
}
.btn-gold {
  padding: 15px 40px;
  background: var(--c2);
  color: #111;
  border-radius: 999px;
  font-weight: 500;
  box-shadow: 0 0 30px rgba(255,193,7,0.45);
  transition: var(--base-trans);
}
.btn-gold:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 0 46px rgba(255,193,7,0.7);
}
.btn-stroke-white {
  padding: 15px 40px;
  border: 1px solid #fff;
  color: #fff;
  border-radius: 999px;
  transition: var(--base-trans);
}
.btn-stroke-white:hover {
  background: #fff;
  color: var(--c1);
  transform: translateY(-6px) scale(1.03);
}

/* 内页通用banner */
.inner-banner4 {
  width: 100%;
  height: 280px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle 260px at 10% 20%, rgba(153,0,51,0.9), transparent),
    radial-gradient(circle 240px at 90% 18%, rgba(255,193,7,0.8), transparent),
    radial-gradient(circle 270px at 50% 80%, rgba(0,150,103,0.75), transparent),
    linear-gradient(145deg, #290c18, var(--dark-bg));
}
.inner-banner4 .light-flow1,.inner-banner4 .light-flow2,.inner-banner4 .point-box,.inner-banner4 .rotate-ring {
  transform: scale(0.6);
}
.inner-text-box h1 {
  font-size: 38px;
  color: var(--white);
  margin-bottom: 10px;
}
.inner-text-box p {
  font-size: 16px;
  color: rgba(255,255,255,0.9);
}

/* 面包屑 */
.bread4 {
  padding: 26px 0;
  font-size: 14px;
  color: var(--text-gray);
}
.bread4 a {
  color: var(--c1);
}

/* 二级子菜单 */
.submenu4 {
  padding: 12px 0 32px;
}
.sub-row4 {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.sub-item4 a {
  padding: 10px 22px;
  border: 1px solid #ddd;
  border-radius: 7px;
  display: inline-block;
  transition: var(--base-trans);
}
.sub-item4.active a {
  background: var(--c1);
  color: #fff;
  border-color: var(--c1);
}
.badge-count {
  padding: 2px 8px;
  font-size: 12px;
  border-radius: 12px;
  margin-left: 6px;
}
.sub-item4.active .badge-count {
  background: #fff;
  color: var(--c1);
}
.sub-item4:not(.active) .badge-count {
  background: var(--c1);
  color: #fff;
}

/* 数据统计区块 强动态 */
.data-block4 {
  width: 100%;
  padding: 76px 0;
  margin: 68px 0;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle 300px at 8% 22%, rgba(153,0,51,0.9), transparent),
    radial-gradient(circle 260px at 92% 16%, rgba(255,193,7,0.82), transparent),
    radial-gradient(circle 290px at 50% 84%, rgba(0,150,103,0.78), transparent),
    linear-gradient(145deg, #1f0a14, var(--dark-bg));
}
.data-block4 .light-flow1 { animation-duration:6s; }
.data-block4 .point-box span { background: rgba(255,255,255,0.5); }
.data-grid4 {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 32px;
  position: relative;
  z-index: 2;
  color: #fff;
  text-align: center;
}
.data-num-big {
  font-size: 46px;
  font-weight: bold;
  margin-bottom: 12px;
  animation: numPulseWide 3.3s alternate infinite ease;
}
.data-label-txt {
  font-size: 17px;
  opacity: 0.92;
}

/* 通用区块标题 */
.section-head4 {
  text-align: center;
  margin-bottom: 54px;
}
.section-head4 h2 {
  font-size: 33px;
  margin-bottom: 12px;
}
.section-head4 p {
  color: var(--text-gray);
  font-size: 17px;
}

/* 服务卡片 */
.service-grid4 {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 26px;
  margin-bottom: 74px;
}
.service-card4 {
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  display: block;
  transition: var(--base-trans);
}
.service-card4:hover {
  border-color: var(--c1);
  transform: translateY(-8px);
  box-shadow: 0 13px 34px rgba(153,0,51,0.13);
}
.service-icon4 {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
}
.service-card4 h3 {
  font-size: 20px;
  margin-bottom: 12px;
}
.service-card4 p {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.7;
}

/* 图文卡片（优势FAQ） */
.card-grid4 {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 26px;
  margin-bottom: 42px;
}
.img-card4 {
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  overflow: hidden;
  display: block;
  transition: var(--base-trans);
}
.img-card4:hover {
  transform: translateY(-8px);
  box-shadow: 0 13px 34px rgba(153,0,51,0.13);
}
.card-img4 {
  width: 100%;
  height: 162px;
  object-fit: cover;
}
.card-text4 {
  padding: 20px;
}
.card-text4 h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.card-text4 p {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.6;
}
.more-center4 {
  text-align: center;
  margin-bottom: 74px;
}
.more-link4 {
  color: var(--c1);
  font-weight: 500;
}

/* 资讯列表 */
.news-wrap4 {
  margin-bottom: 42px;
}
.news-item4 {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid #eee;
}
.news-pic4 {
  width: 225px;
  height: 142px;
  border-radius: 6px;
  object-fit: cover;
}
.news-text4 h2 {
  font-size: 20px;
  margin-bottom: 10px;
}
.news-time4 {
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 10px;
}
.news-desc4 {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}
.page-box4 {
  display: flex;
  gap: 10px;
  justify-content: center;
  padding: 30px 0;
}
.page-box4 a {
  border: 1px solid #eee;
  padding: 8px 14px;
  border-radius: 4px;
  font-size: 14px;
}

/* 文章详情 */
.detail-box4 {
  padding-bottom: 74px;
}
.detail-h1 {
  font-size: 31px;
  margin-bottom: 16px;
}
.detail-date4 {
  font-size: 14px;
  color: var(--text-gray);
  padding-bottom: 16px;
  border-bottom: 1px solid #eee;
  margin-bottom: 30px;
}
.detail-content4 {
  font-size: 16px;
  line-height: 1.9;
  color: #222;
}
.prev-next4 {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-gray);
}

/* 通用内容区块 */
.content-box4 {
  font-size: 16px;
  line-height: 1.9;
  padding-bottom: 74px;
}

/* 底部转化区 超大三色光效 */
.action-block4 {
  width: 100%;
  padding: 94px 0;
  margin-top: 68px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle 330px at 10% 16%, rgba(153,0,51,0.92), transparent),
    radial-gradient(circle 280px at 90% 12%, rgba(255,193,7,0.84), transparent),
    radial-gradient(circle 310px at 50% 86%, rgba(0,150,103,0.8), transparent),
    linear-gradient(145deg, #1a0811, var(--dark-bg));
}
.action-block4 .light-flow1 { animation-duration:4.8s; }
.action-block4 .light-flow2 { animation-duration:6.8s; }
.action-row4 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  position: relative;
  z-index: 2;
  color: #fff;
}
.action-text4 .title-text {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 14px;
}
.action-text4 p {
  font-size: 18px;
  opacity: 0.93;
}
.action-btn-group4 {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.action-btn1 {
  padding: 16px 42px;
  background: var(--c2);
  color: #111;
  border-radius: 999px;
  font-weight: 500;
  box-shadow: 0 0 34px rgba(255,193,7,0.42);
  transition: var(--base-trans);
}
.action-btn1:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 0 50px rgba(255,193,7,0.68);
}
.action-btn2 {
  padding: 16px 42px;
  background: #fff;
  color: var(--c1);
  border-radius: 999px;
  transition: var(--base-trans);
}
.action-btn2:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 0 36px rgba(255,255,255,0.3);
}

/* 页脚 */
.footer4 {
  background: var(--dark-bg);
  color: #b9c0cc;
  padding: 66px 0 34px;
}
.footer-row4 {
  display: flex;
  justify-content: space-between;
  gap: 36px;
  margin-bottom: 42px;
}
.footer-contact4 p1 {
  color: #fff;
  font-size: 19px;
  margin-bottom: 22px;
}
.footer-contact4 p {
  line-height: 2;
  font-size: 14px;
}
.footer-link4 span {
  color: #fff;
  margin-right: 8px;
}
.footer-link4 a {
  font-size: 14px;
  margin-right: 12px;
  color: #b9c0cc;
}
.copyright4 {
  border-top: 1px solid #241018;
  padding-top: 20px;
  text-align: center;
  font-size: 14px;
}
.copyright4 a {
  color: var(--c2);
  margin-left: 10px;
}

/* 动画关键帧（大幅度） */
@keyframes flowBigL {
  0% { left: -200%; }
  100% { left: 200%; }
}
@keyframes flowBigR {
  0% { right: -200%; }
  100% { right: 200%; }
}
@keyframes pointFloatBig {
  0% { transform: translate(0,0) scale(1); opacity:0; }
  20% { opacity:1; }
  80% { opacity:1; }
  100% { transform: translate(160px,-200px) scale(0); opacity:0; }
}
@keyframes ringSpinSlow {
  0% { transform: translate(-50%,-50%) rotate(0deg); }
  100% { transform: translate(-50%,-50%) rotate(360deg); }
}
@keyframes numPulseWide {
  0% { transform: scale(1); }
  100% { transform: scale(1.08); }
}

/* 移动端完整适配 */
@media screen and (max-width:1024px) {
  .data-grid4,.service-grid4,.card-grid4 { grid-template-columns: repeat(2,1fr); }
  .action-row4,.footer-row4 { flex-direction: column; text-align:center; }
  .action-btn-group4 { justify-content:center; }
  .big-p-title { font-size:40px; }
}
@media screen and (max-width:768px) {
  .nav-row { height:auto; flex-direction:column; padding:18px 0; gap:18px; }
  .menu-list4 { flex-wrap:wrap; justify-content:center; gap:18px; }
  .banner4 { min-height:450px; }
  .big-p-title { font-size:30px; }
  .banner-btn-row { flex-direction:column; }
  .btn-gold,.btn-stroke-white { width:100%; text-align:center; }
  .inner-banner4 { height:210px; }
  .inner-text-box h1 { font-size:28px; }
  .section-head4 h2,.action-text4 h2 { font-size:28px; }
  .news-item4 { flex-direction:column; }
  .news-pic4 { width:100%; height:210px; }
  .detail-h1 { font-size:26px; }
  .rotate-ring { width:320px; height:320px; }
}
@media screen and (max-width:480px) {
  .data-grid4,.service-grid4,.card-grid4 { grid-template-columns:1fr; }
  .data-num-big { font-size:34px; }
  .sub-row4 { gap:10px; }
  .sub-item4 a { padding:8px 16px; font-size:13px; }
  .action-block4 { padding:66px 0; }
  .action-btn1,.action-btn2 { width:100%; text-align:center; }
  .page-box4 { flex-wrap:wrap; }
}