* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #0a0e1a;
  --bg-soft: #111827;
  --card: rgba(255,255,255,.04);
  --line: rgba(255,255,255,.08);
  --text: #e5edf7;
  --muted: #8b9bb4;
  --cyan: #00d4ff;
  --blue: #2563eb;
}
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 顶部进度条 */
.scroll-bar {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  z-index: 999; transition: width .1s;
}

/* 导航 */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,14,26,.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  transition: .3s;
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 22px; font-weight: 700; letter-spacing: 1px;
  background: linear-gradient(90deg, #fff, var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; gap: 6px; list-style: none; }
.nav-links a {
  display: block; padding: 8px 16px; font-size: 14px; color: var(--muted);
  border-radius: 8px; transition: .3s;
}
.nav-links a:hover, .nav-links a.active {
  color: #fff; background: rgba(0,212,255,.12);
}
.nav-cta {
  padding: 9px 22px; border-radius: 24px; font-size: 14px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  color: #fff !important; font-weight: 600;
}
.menu-toggle {
  display: none; background: none; border: none;
  color: #fff; font-size: 26px; cursor: pointer;
}

/* Hero */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding: 120px 0 80px;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(0,212,255,.18), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(37,99,235,.22), transparent 45%);
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at center, #000 30%, transparent 75%);
}
.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 24px; font-size: 13px;
  color: var(--cyan); background: rgba(0,212,255,.08);
  border: 1px solid rgba(0,212,255,.25); margin-bottom: 24px;
}
.hero-tag i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan); animation: pulse 1.6s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
.hero h1 {
  font-size: 54px; line-height: 1.2; font-weight: 800;
  letter-spacing: -1px; margin-bottom: 22px;
}
.hero h1 span {
  background: linear-gradient(90deg, var(--cyan), #7c9dff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p { color: var(--muted); font-size: 17px; max-width: 520px; margin-bottom: 34px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  padding: 13px 32px; border-radius: 28px; font-size: 15px; font-weight: 600;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  color: #fff; box-shadow: 0 8px 30px rgba(0,212,255,.35); transition: .3s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 38px rgba(0,212,255,.5); }
.btn-ghost {
  padding: 13px 32px; border-radius: 28px; font-size: 15px;
  border: 1px solid var(--line); color: var(--text); transition: .3s;
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* Hero 右侧可视化 */
.hero-visual { position: relative; height: 420px; }
.orb {
  position: absolute; border-radius: 50%; filter: blur(2px);
  animation: float 6s ease-in-out infinite;
}
.orb1 {
  width: 280px; height: 280px; top: 30px; right: 40px;
  background: radial-gradient(circle at 30% 30%, rgba(0,212,255,.5), rgba(37,99,235,.05) 70%);
  box-shadow: 0 0 80px rgba(0,212,255,.35);
}
.orb2 {
  width: 140px; height: 140px; bottom: 20px; left: 10px;
  background: radial-gradient(circle at 30% 30%, rgba(124,157,255,.5), transparent 70%);
  animation-delay: -3s;
}
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-18px)} }
.grid-card {
  position: absolute; background: var(--card);
  border: 1px solid var(--line); border-radius: 16px;
  padding: 20px; backdrop-filter: blur(12px);
}
.gc1 { top: 80px; left: 0; width: 200px; }
.gc2 { bottom: 60px; right: 30px; width: 220px; }
.gc1 .k, .gc2 .k { font-size: 12px; color: var(--muted); }
.gc1 .v, .gc2 .v {
  font-size: 28px; font-weight: 800; margin-top: 4px;
  background: linear-gradient(90deg, var(--cyan), #7c9dff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* 通用区块 */
.section { padding: 100px 0; position: relative; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 60px; }
.section-head .kicker {
  font-size: 13px; letter-spacing: 3px; color: var(--cyan);
  text-transform: uppercase; margin-bottom: 12px;
}
.section-head h2 { font-size: 38px; font-weight: 800; letter-spacing: -1px; margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 15px; }

/* 数据条 */
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.stat {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 32px 24px; text-align: center;
  transition: .3s;
}
.stat:hover { border-color: rgba(0,212,255,.4); transform: translateY(-4px); }
.stat .num {
  font-size: 38px; font-weight: 800;
  background: linear-gradient(90deg, var(--cyan), #7c9dff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.stat .label { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* 业务卡片 */
.biz-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.biz-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 20px; padding: 38px 34px; position: relative;
  overflow: hidden; transition: .35s;
}
.biz-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transform: scaleX(0); transform-origin: left; transition: .4s;
}
.biz-card:hover { transform: translateY(-6px); border-color: rgba(0,212,255,.3); background: rgba(0,212,255,.04); }
.biz-card:hover::before { transform: scaleX(1); }
.biz-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(0,212,255,.2), rgba(37,99,235,.2));
  border: 1px solid rgba(0,212,255,.25);
}
.biz-card h3 { font-size: 22px; margin-bottom: 12px; }
.biz-card p { color: var(--muted); font-size: 15px; }
.biz-card .more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 20px; font-size: 14px; color: var(--cyan);
}
.biz-card .more:hover { gap: 12px; }

/* 新闻 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 28px 26px; transition: .3s;
  display: flex; flex-direction: column;
}
.news-card:hover { border-color: rgba(0,212,255,.35); transform: translateY(-4px); }
.news-date { font-size: 13px; color: var(--cyan); margin-bottom: 12px; letter-spacing: 1px; }
.news-card h3 { font-size: 18px; line-height: 1.5; margin-bottom: 10px; }
.news-card p { color: var(--muted); font-size: 14px; flex: 1; }
.news-card .more { margin-top: 18px; font-size: 14px; color: var(--cyan); }

/* 页面 banner */
.page-banner {
  padding: 160px 0 70px; text-align: center; position: relative;
  background: radial-gradient(circle at 50% 0%, rgba(0,212,255,.12), transparent 60%);
  border-bottom: 1px solid var(--line);
}
.page-banner h1 { font-size: 44px; font-weight: 800; letter-spacing: -1px; }
.page-banner p { color: var(--muted); margin-top: 12px; }

/* 简介页 */
.about-block { max-width: 900px; margin: 0 auto; }
.about-block h2 {
  font-size: 26px; margin: 40px 0 18px; padding-left: 16px;
  border-left: 3px solid var(--cyan);
}
.about-block p { color: var(--muted); margin-bottom: 16px; text-indent: 2em; }
.timeline { position: relative; margin-top: 30px; padding-left: 28px; border-left: 1px solid var(--line); }
.timeline .item { position: relative; padding-bottom: 28px; }
.timeline .item::before {
  content: ''; position: absolute; left: -34px; top: 8px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 12px var(--cyan);
}
.timeline .year { color: var(--cyan); font-weight: 700; font-size: 15px; }
.timeline .desc { color: var(--muted); font-size: 14px; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-item {
  display: flex; gap: 18px; padding: 22px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; margin-bottom: 16px;
}
.contact-item .ico {
  flex: 0 0 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
  background: linear-gradient(135deg, rgba(0,212,255,.2), rgba(37,99,235,.2));
  border: 1px solid rgba(0,212,255,.25);
}
.contact-item h4 { font-size: 15px; margin-bottom: 4px; }
.contact-item p { color: var(--muted); font-size: 14px; }
.form-box {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 18px; padding: 32px;
}
.form-box h3 { font-size: 20px; margin-bottom: 20px; }
.form-box input, .form-box textarea {
  width: 100%; padding: 13px 16px; margin-bottom: 16px;
  background: rgba(255,255,255,.04); border: 1px solid var(--line);
  border-radius: 10px; color: var(--text); font-family: inherit; font-size: 14px;
}
.form-box input:focus, .form-box textarea:focus {
  outline: none; border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,.12);
}
.form-box textarea { height: 130px; resize: vertical; }
.form-box button {
  width: 100%; padding: 14px; border: none; border-radius: 10px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  color: #fff; font-size: 15px; font-weight: 600; cursor: pointer;
  transition: .3s;
}
.form-box button:hover { box-shadow: 0 8px 28px rgba(0,212,255,.4); }

/* 页脚 */
footer {
  border-top: 1px solid var(--line); padding: 60px 0 30px;
  background: #060912;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; margin-bottom: 40px; }
.footer-grid h4 { font-size: 15px; margin-bottom: 16px; color: #fff; }
.footer-grid p, .footer-grid li { color: var(--muted); font-size: 14px; line-height: 2; list-style: none; }
.footer-grid a:hover { color: var(--cyan); }
.copyright {
  text-align: center; border-top: 1px solid var(--line);
  padding-top: 24px; font-size: 13px; color: #5a6a85;
}

/* 响应式 */
@media (max-width: 992px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links {
    position: absolute; top: 72px; left: 0; right: 0;
    background: #0d1320; flex-direction: column; padding: 16px 24px;
    border-bottom: 1px solid var(--line); display: none;
  }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }
  .nav-cta { display: none; }
  .hero h1 { font-size: 36px; }
  .hero p { font-size: 15px; }
  .section { padding: 70px 0; }
  .section-head h2 { font-size: 28px; }
  .biz-grid, .news-grid, .contact-grid { grid-template-columns: 1fr; }
  .page-banner h1 { font-size: 32px; }
  .footer-grid { grid-template-columns: 1fr; }
}