/* Dark Cyber Tech Theme — Hacker Style */
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; width: 100%; overflow-x: hidden; }
*, *:before, *:after { box-sizing: border-box; }

body.z53b4ebody {
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: #c8d6e5; background: #0a0e17; line-height: 1.7; word-wrap: break-word;
  background-image:
    radial-gradient(ellipse at top, rgba(0, 255, 170, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at bottom, rgba(0, 150, 255, 0.04) 0%, transparent 50%);
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }

.z53b4econtainer {
  display: block;
  width: 94%;
  max-width: 1520px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

/* Header — 深色科技导航 */
.z53b4eheader {
  position: relative; z-index: 100; width: 100%;
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 255, 170, 0.2);
  box-shadow: 0 2px 20px rgba(0, 255, 170, 0.08);
}
.z53b4eheaderinner { position: relative; display: flex; align-items: center; min-height: 66px; }
.z53b4elogo {
  display: flex; align-items: center; font-weight: 700;
  max-width: 36%; margin-right: 12px; flex-shrink: 0;
  color: #00ffaa;
}
.z53b4elogomark {
  width: 34px; height: 34px; margin-right: 10px; border-radius: 6px;
  background: linear-gradient(135deg, #00ffaa, #00aaff);
  color: #0a0e17; font-size: 12px; text-align: center; line-height: 34px; flex-shrink: 0;
  font-weight: 900;
  box-shadow: 0 0 15px rgba(0, 255, 170, 0.4);
}
.z53b4elogotext { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.z53b4enavtog { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.z53b4enavbtn { display: none; cursor: pointer; margin-left: auto; padding: 10px; flex-shrink: 0; }
.z53b4enavbtn span { display: block; width: 22px; height: 2px; margin: 5px 0; background: #00ffaa; }
.z53b4enav { margin-left: auto; }
.z53b4enavlist { display: flex; flex-wrap: wrap; align-items: center; }
.z53b4enavlist li { margin-left: 20px; }
.z53b4enavlist a { font-size: 15px; color: #8fa3bf; font-weight: 500; transition: color 0.3s; }
.z53b4enavlist a:hover { color: #00ffaa; text-shadow: 0 0 8px rgba(0, 255, 170, 0.5); }
.z53b4ebtnnav {
  margin-left: 14px; flex-shrink: 0; white-space: nowrap;
  background: linear-gradient(135deg, #00ffaa, #00cc88);
  color: #0a0e17 !important; padding: 10px 20px; border-radius: 8px; font-size: 14px; font-weight: 700;
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.3);
  transition: all 0.3s;
}
.z53b4ebtnnav:hover {
  background: linear-gradient(135deg, #00ffcc, #00ffaa);
  box-shadow: 0 0 30px rgba(0, 255, 170, 0.5);
  transform: translateY(-1px);
}

/* Buttons */
.z53b4ebtn {
  display: inline-block; padding: 12px 24px; border-radius: 8px;
  font-weight: 700; font-size: 14px; border: 2px solid transparent; text-align: center;
  transition: all 0.3s ease;
}
.z53b4ebtnprimary {
  background: linear-gradient(135deg, #00ffaa, #00cc88);
  color: #0a0e17 !important;
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.3);
}
.z53b4ebtnprimary:hover {
  background: linear-gradient(135deg, #00ffcc, #00ffaa);
  box-shadow: 0 0 30px rgba(0, 255, 170, 0.5);
  transform: translateY(-2px);
}
.z53b4ebtnoutline {
  border: 2px solid rgba(0, 255, 170, 0.5);
  color: #00ffaa !important;
  background: transparent;
}
.z53b4ebtnoutline:hover {
  background: rgba(0, 255, 170, 0.1);
  border-color: #00ffaa;
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.2);
}
.z53b4ebtnblock { display: block; width: 100%; }

/* Banner — 深色科技横幅 */
.z53b4ebanner {
  width: 100%;
  background: linear-gradient(135deg, #0a0e17 0%, #0d1526 50%, #0a1628 100%);
  color: #fff;
  overflow: hidden;
  position: relative;
}
.z53b4ebanner::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(0, 255, 170, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 170, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}
.z53b4ebannersplit { display: flex; flex-wrap: wrap; min-height: 560px; position: relative; z-index: 1; }
.z53b4ebannerleft {
  width: 55%; display: flex; align-items: center;
  padding: 60px 4% 76px; box-sizing: border-box;
}
.z53b4ebannerleftinner { width: 100%; max-width: 720px; }
.z53b4ebannertag {
  font-size: 13px; font-weight: 700; color: #00ffaa;
  margin-bottom: 16px;
  letter-spacing: 2px;
  text-shadow: 0 0 10px rgba(0, 255, 170, 0.5);
}
.z53b4ebannertitle {
  font-size: 42px; line-height: 1.3; margin-bottom: 18px;
  background: linear-gradient(135deg, #ffffff 0%, #00ffaa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.z53b4ebannerdesc { color: rgba(200, 214, 229, 0.85); margin-bottom: 28px; font-size: 16px; line-height: 1.8; }
.z53b4ebannerbtns { margin-bottom: 28px; }
.z53b4ebannerbtns .z53b4ebtn { margin: 0 10px 12px 0; }
.z53b4ebannerpoints { overflow: hidden; }
.z53b4ebannerpoints li {
  float: left; width: 50%; padding: 6px 12px 6px 0; font-size: 14px; color: rgba(200, 214, 229, 0.8);
}
.z53b4ebannerpoints li:before {
  content: "▸";
  color: #00ffaa;
  margin-right: 8px;
  text-shadow: 0 0 6px rgba(0, 255, 170, 0.6);
}
.z53b4ebannerright {
  width: 45%; overflow: hidden;
  position: relative;
}
.z53b4ebannerright::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, #0a0e17 0%, transparent 30%, transparent 70%, rgba(10, 14, 23, 0.5) 100%);
  pointer-events: none;
}
.z53b4ebannerright img {
  width: 100%; height: 100%; min-height: 560px;
  object-fit: cover;
  filter: brightness(0.6) saturate(1.2) hue-rotate(10deg);
}

/* Stats — 数据统计 */
.z53b4estats { position: relative; z-index: 2; margin-top: -40px; width: 100%; padding: 0 20px; }
.z53b4estatsrow {
  max-width: 1520px; margin-left: auto; margin-right: auto;
  background: linear-gradient(135deg, #111827 0%, #0f172a 100%);
  border-radius: 12px;
  border: 1px solid rgba(0, 255, 170, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 255, 170, 0.05);
  overflow: hidden; padding: 24px 0;
}
.z53b4estat { float: left; width: 25%; text-align: center; padding: 10px 6px; }
.z53b4estatsrow:after { content: ""; display: table; clear: both; }
.z53b4estat strong {
  display: block; font-size: 30px;
  color: #00ffaa;
  font-weight: 800;
  text-shadow: 0 0 15px rgba(0, 255, 170, 0.4);
}
.z53b4estat span { font-size: 13px; color: #6b8299; }

/* Sections — 通用板块 */
.z53b4esection { width: 100%; padding: 72px 0; clear: both; position: relative; }
.z53b4ealt { background: #0d1320; }
.z53b4ealt::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center, rgba(0, 255, 170, 0.02) 0%, transparent 70%);
  pointer-events: none;
}
.z53b4esectionhead { text-align: center; margin-bottom: 44px; position: relative; z-index: 1; }
.z53b4esectionhead.z53b4eleft { text-align: left; }
.z53b4esectiontitle {
  font-size: 32px; margin-bottom: 12px;
  color: #ffffff;
  font-weight: 700;
}
.z53b4esectiondesc { color: #6b8299; font-size: 15px; }

/* About block */
.z53b4eaboutblock {
  background: linear-gradient(135deg, #111827 0%, #0f172a 100%);
  border-radius: 12px;
  border: 1px solid rgba(0, 255, 170, 0.12);
  padding: 36px;
  border-top: 3px solid #00ffaa;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}
.z53b4eaboutblock h3 { margin-bottom: 14px; font-size: 22px; color: #fff; }
.z53b4eaboutblock p { color: #8fa3bf; margin-bottom: 14px; line-height: 1.8; }
.z53b4etags { margin: 18px 0; }
.z53b4etags span {
  display: inline-block; margin: 0 8px 8px 0; padding: 6px 14px;
  background: rgba(0, 255, 170, 0.1);
  color: #00ffaa;
  border: 1px solid rgba(0, 255, 170, 0.2);
  border-radius: 999px; font-size: 12px; font-weight: 600;
}
.z53b4echecklist { overflow: hidden; margin-top: 14px; }
.z53b4echecklist li {
  float: left; width: 50%; padding: 0 12px 12px 22px; position: relative;
  font-size: 14px; color: #8fa3bf; box-sizing: border-box;
}
.z53b4echecklist li:before {
  content: "✓";
  position: absolute; left: 0; top: 4px;
  color: #00ffaa;
  font-weight: 700;
  font-size: 14px;
}
.z53b4echecklist:after { content: ""; display: table; clear: both; }

/* Grids — 卡片网格 */
.z53b4egrid2, .z53b4egrid3, .z53b4egrid4 { display: flex; flex-wrap: wrap; margin: 0 -12px; position: relative; z-index: 1; }
.z53b4ecard, .z53b4escene, .z53b4eadv, .z53b4equote {
  background: linear-gradient(135deg, #111827 0%, #0f172a 100%);
  border: 1px solid rgba(0, 255, 170, 0.1);
  border-radius: 12px;
  padding: 28px 24px;
  margin: 0 12px 24px; box-sizing: border-box;
  transition: all 0.3s ease;
}
.z53b4ecard:hover, .z53b4escene:hover, .z53b4eadv:hover {
  border-color: rgba(0, 255, 170, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 255, 170, 0.08);
}
.z53b4egrid2 .z53b4escene {
  width: calc(50% - 24px);
  border-bottom: 3px solid #00ffaa;
}
.z53b4egrid3 .z53b4ecard, .z53b4egrid3 .z53b4equote { width: calc(33.333% - 24px); min-height: 220px; }
.z53b4egrid4 .z53b4eadv { width: calc(25% - 24px); min-height: 160px; }
.z53b4ecard h3, .z53b4escene h3, .z53b4eadv h3 {
  margin-bottom: 10px; font-size: 17px;
  color: #fff;
}
.z53b4ecard p, .z53b4escene p, .z53b4eadv p {
  color: #6b8299; font-size: 14px; line-height: 1.7;
}
.z53b4ecard ul { margin-top: 12px; }
.z53b4ecard li {
  font-size: 13px; color: #6b8299;
  padding: 3px 0 3px 14px; position: relative;
}
.z53b4ecard li:before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: #00ffaa;
  box-shadow: 0 0 6px rgba(0, 255, 170, 0.6);
}
.z53b4eadv span {
  display: block; color: #00ffaa;
  font-weight: 700; font-size: 14px; margin-bottom: 8px;
  text-shadow: 0 0 8px rgba(0, 255, 170, 0.4);
}
.z53b4equote p { margin-bottom: 14px; color: #c8d6e5; font-style: italic; }
.z53b4equote footer { font-size: 13px; color: #6b8299; }

/* Zigzag — 服务流程 */
.z53b4ezigzag { max-width: 800px; margin: 0 auto; list-style: none; position: relative; z-index: 1; }
.z53b4ezigzag li {
  display: flex; align-items: center; margin-bottom: 16px;
  background: linear-gradient(135deg, #111827 0%, #0f172a 100%);
  border: 1px solid rgba(0, 255, 170, 0.1);
  border-radius: 12px; padding: 20px 24px;
  transition: all 0.3s;
}
.z53b4ezigzag li:hover {
  border-color: rgba(0, 255, 170, 0.25);
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.06);
}
.z53b4ezigleft { margin-right: 10%; }
.z53b4ezigright { margin-left: 10%; flex-direction: row-reverse; text-align: right; }
.z53b4ezigzag span {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 50%; margin: 0 18px;
  background: linear-gradient(135deg, #00ffaa, #00aaff);
  color: #0a0e17;
  font-weight: 800; text-align: center; line-height: 44px;
  font-size: 16px;
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.3);
}
.z53b4ezigzag h3 { font-size: 16px; margin-bottom: 4px; color: #fff; }
.z53b4ezigzag p { font-size: 13px; color: #6b8299; }

/* Industries / tags */
.z53b4eindustries { text-align: center; position: relative; z-index: 1; }
.z53b4eindustries li {
  display: inline-block; margin: 6px; padding: 10px 18px;
  background: rgba(0, 255, 170, 0.05);
  border: 1px solid rgba(0, 255, 170, 0.15);
  border-radius: 8px; font-size: 14px;
  color: #8fa3bf;
  transition: all 0.3s;
}
.z53b4eindustries li:hover {
  background: rgba(0, 255, 170, 0.1);
  border-color: #00ffaa;
  color: #00ffaa;
}

/* FAQ */
.z53b4efaqlist { max-width: 860px; margin: 0 auto; position: relative; z-index: 1; }
.z53b4efaqlist article {
  background: linear-gradient(135deg, #111827 0%, #0f172a 100%);
  border: 1px solid rgba(0, 255, 170, 0.1);
  border-radius: 10px;
  padding: 20px 24px; margin-bottom: 12px;
  border-left: 4px solid #00ffaa;
  transition: all 0.3s;
}
.z53b4efaqlist article:hover {
  border-color: rgba(0, 255, 170, 0.3);
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.06);
}
.z53b4efaqlist h3 { font-size: 15px; margin-bottom: 6px; color: #fff; }
.z53b4efaqlist p { font-size: 14px; color: #6b8299; line-height: 1.8; }

/* Contact */
.z53b4econtactwrap { display: flex; flex-wrap: wrap; margin: 0 -10px; position: relative; z-index: 1; }
.z53b4econtactinfo, .z53b4eform {
  width: calc(50% - 20px); margin: 0 10px;
  background: linear-gradient(135deg, #111827 0%, #0f172a 100%);
  border: 1px solid rgba(0, 255, 170, 0.12);
  border-radius: 12px; padding: 30px;
  box-sizing: border-box;
}
.z53b4econtactinfo h3 { margin-bottom: 18px; color: #fff; font-size: 18px; }
.z53b4econtactinfo li {
  overflow: hidden; font-size: 14px; padding-bottom: 12px; margin-bottom: 12px;
  border-bottom: 1px dashed rgba(0, 255, 170, 0.1);
}
.z53b4econtactinfo span { float: left; color: #6b8299; }
.z53b4econtactinfo strong { float: right; color: #c8d6e5; }
.z53b4eonline {
  color: #00ffaa !important;
  text-shadow: 0 0 8px rgba(0, 255, 170, 0.4);
}
.z53b4eform label { display: block; margin-bottom: 14px; font-size: 13px; font-weight: 600; color: #8fa3bf; }
.z53b4eform input, .z53b4eform select, .z53b4eform textarea {
  display: block; width: 100%; margin-top: 6px; padding: 12px 14px;
  border: 1px solid rgba(0, 255, 170, 0.15);
  border-radius: 8px; font: inherit;
  background: #0a0e17;
  color: #c8d6e5;
  transition: all 0.3s;
}
.z53b4eform input:focus, .z53b4eform select:focus, .z53b4eform textarea:focus {
  outline: none;
  border-color: #00ffaa;
  box-shadow: 0 0 15px rgba(0, 255, 170, 0.1);
}
.z53b4eform select option { background: #0f172a; color: #c8d6e5; }

/* Footer */
.z53b4efooter {
  width: 100%;
  background: #070a12;
  color: rgba(200, 214, 229, 0.6);
  padding: 56px 0 24px;
  border-top: 1px solid rgba(0, 255, 170, 0.1);
}
.z53b4efootergrid { display: flex; flex-wrap: wrap; margin: 0 -11px 28px; }
.z53b4efootergrid > div { width: 25%; padding: 0 11px; box-sizing: border-box; }
.z53b4efooter h3 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.z53b4efooter p, .z53b4efooter li { font-size: 13px; margin-bottom: 8px; line-height: 1.7; }
.z53b4efooter a { transition: color 0.3s; }
.z53b4efooter a:hover { color: #00ffaa; text-shadow: 0 0 8px rgba(0, 255, 170, 0.4); }
.z53b4eflinklist li { display: inline-block; margin-right: 10px; }
.z53b4eadbox { margin: 16px 0; }
.z53b4efooterbottom {
  border-top: 1px solid rgba(0, 255, 170, 0.08);
  padding-top: 20px; overflow: hidden; font-size: 12px;
}
.z53b4efooterbottom p { float: left; margin-right: 16px; }
.z53b4efooterbottom a { color: #00ffaa; }

/* Responsive */
@media screen and (max-width: 992px) {
  .z53b4enavbtn { display: block; }
  .z53b4ebtnnav { display: none !important; }
  .z53b4enav {
    position: absolute; left: 0; right: 0; top: 100%; margin: 0;
    background: #0f172a;
    border-bottom: 1px solid rgba(0, 255, 170, 0.1);
    max-height: 0; overflow: hidden; z-index: 60;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  }
  .z53b4enavlist { display: block; padding: 8px 20px 16px; }
  .z53b4enavlist li { margin: 0; }
  .z53b4enavlist a { display: block; padding: 12px 4px; font-size: 15px; }
  .z53b4enavtog:checked ~ .z53b4enav { max-height: 70vh; overflow-y: auto; }

  .z53b4ebannerleft, .z53b4ebannerright { width: 100%; }
  .z53b4ebannerleft { padding: 48px 20px 40px; }
  .z53b4ebannerright img { min-height: 240px; max-height: 300px; }
  .z53b4ebannersplit { min-height: 0; }
  .z53b4estat { width: 50%; }
  .z53b4echecklist li { width: 100%; float: none; }
  .z53b4egrid3 .z53b4ecard, .z53b4egrid3 .z53b4equote,
  .z53b4egrid4 .z53b4eadv, .z53b4econtactinfo, .z53b4eform,
  .z53b4efootergrid > div { width: calc(50% - 16px); }
  .z53b4econtactinfo, .z53b4eform { width: 100%; margin: 0 0 16px; }
  .z53b4ezigleft, .z53b4ezigright { margin: 0 0 14px; }
  .z53b4ezigright { flex-direction: row; text-align: left; }
  .z53b4estats { margin-top: -24px; }
}

@media screen and (max-width: 640px) {
  .z53b4ebannertitle { font-size: 28px; }
  .z53b4ebannerbtns .z53b4ebtn { display: block; width: 100%; margin: 0 0 12px; }
  .z53b4ebannerpoints li { width: 100%; float: none; }
  .z53b4estat,
  .z53b4egrid2 .z53b4escene,
  .z53b4egrid3 .z53b4ecard,
  .z53b4egrid3 .z53b4equote,
  .z53b4egrid4 .z53b4eadv,
  .z53b4efootergrid > div { width: 100%; margin-left: 0; margin-right: 0; }
  .z53b4egrid2, .z53b4egrid3, .z53b4egrid4 { margin: 0; }
  .z53b4esection { padding: 48px 0; }
  .z53b4econtactinfo span, .z53b4econtactinfo strong { float: none; display: block; }
  .z53b4efooterbottom p { float: none; }
}
/* PC 大屏增强 */
@media screen and (min-width: 1400px) {
  .z53b4esection_title, .z53b4esection-title, .z53b4esectiontitle { font-size: 38px !important; }
  .z53b4ebanner_title, .z53b4ebannertitle, .z53b4ebanner-title { font-size: 50px !important; }
}