/* ============================================================
 * 信联融合官网 · 全站样式
 * 主色：#1890FF（品牌蓝） / #722ED1（深紫）
 * 深色：#001529 / #003A70   描边：#EBEEF5   圆角：4px
 * ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --blue: #1890FF;
  --blue-light: #40A9FF;
  --purple: #722ED1;
  --deep: #001529;
  --deep-2: #003A70;
  --bg: #F5F7FA;
  --line: #EBEEF5;
  --text: #263238;
  --text-2: #5A6B7B;
  --text-3: #8A99A8;
  --white: #fff;
  --grad: linear-gradient(135deg, #1890FF 0%, #722ED1 100%);
  --grad-90: linear-gradient(90deg, #1890FF 0%, #722ED1 100%);
  --shadow: 0 2px 12px rgba(0, 21, 41, .08);
  --shadow-hover: 0 10px 30px rgba(24, 144, 255, .16);
  --radius: 4px;
  --nav-h: 48px;
  --container: 1200px;
  /* 常规屏适中；大屏用下方 media 再放大，避免 4K 过小 */
  --fs-body: 14px;
  --fs-h2: 22px;
  --fs-h3: 15px;
  --fs-small: 12px;
  --hero-title: clamp(26px, 3vw, 38px);
  --hero-title2: clamp(16px, 1.6vw, 24px);
  --page-hero-h1: clamp(20px, 2vw, 30px);
}
html {
  scroll-behavior: smooth;
  /* 预留滚动条槽位，避免内页/首页切换时整页瞬间变窄 */
  scrollbar-gutter: stable;
  overflow-y: scroll;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: var(--fs-body); }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ---------- 通用 ---------- */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 38px; padding: 0 22px; border-radius: var(--radius);
  background: var(--grad); color: #fff; font-size: var(--fs-body); font-weight: 500;
  transition: all .25s ease; white-space: nowrap;
}
.btn-primary:hover { box-shadow: 0 6px 18px rgba(99, 78, 220, .38); transform: translateY(-1px); }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 38px; padding: 0 22px; border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.55); color: #fff; transition: all .25s;
}
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; padding: 0 20px; border-radius: var(--radius);
  border: 1px solid var(--blue); color: var(--blue); transition: all .25s;
}
.btn-outline:hover { background: var(--blue); color: #fff; }

.section { padding: clamp(28px, 3vw, 48px) 0; }
.section-alt { background: #fff; }
.section-head { text-align: left; margin-bottom: clamp(16px, 2vw, 28px); }
.section-head h2 { font-size: var(--fs-h2); font-weight: 700; color: var(--deep); letter-spacing: .5px; }
.section-head p { display: none; }
.section-head .bar { width: 48px; height: 3px; background: var(--grad-90); margin-top: 10px; border-radius: 2px; }

/* 页面内页头 */
.page-hero {
  position: relative; padding: calc(var(--nav-h) + 36px) 0 44px; text-align: center; color: #fff; overflow: hidden;
  background: linear-gradient(135deg, #003A70 0%, #001529 100%);
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(24,144,255,.22), transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(114,46,209,.20), transparent 45%);
}
.page-hero .container { position: relative; }
.page-hero h1 { font-size: var(--page-hero-h1); font-weight: 700; letter-spacing: 1px; }
.page-hero p { margin-top: 12px; color: rgba(255,255,255,.75); font-size: var(--fs-body); }
.crumb { font-size: var(--fs-small); color: var(--text-3); margin: 18px 0 0; }
.crumb a:hover { color: var(--blue); }
.crumb span { margin: 0 8px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 2000;
  height: var(--nav-h); display: flex; align-items: center;
  padding: 0 32px; transition: all .3s ease;
  background: rgba(0, 21, 41, .82); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.nav.scrolled { background: rgba(0, 21, 41, .94); box-shadow: 0 2px 14px rgba(0,0,0,.25); }
.nav-logo { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.nav-logo .dot {
  width: 28px; height: 28px; border-radius: var(--radius); background: var(--grad);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 14px; flex-shrink: 0;
}
.nav-logo .name { color: #fff; font-size: 15px; font-weight: 600; letter-spacing: .5px; white-space: nowrap; }
.nav-menu { display: flex; gap: 2px; margin-left: 28px; flex: 1; }
.nav-menu a {
  position: relative; display: block; padding: 0 12px; height: var(--nav-h); line-height: var(--nav-h);
  color: rgba(255,255,255,.82); font-size: 14px; transition: color .2s;
}
.nav-menu a:hover, .nav-menu a.active { color: #fff; }
.nav-menu a.active::after, .nav-menu a:hover::after {
  content: ''; position: absolute; left: 12px; right: 12px; bottom: 6px; height: 2px;
  background: var(--blue); border-radius: 2px;
}
.nav-right { display: flex; align-items: center; gap: 10px; }
.nav-cta {
  height: 30px; padding: 0 14px; border-radius: var(--radius); background: var(--blue);
  color: #fff; font-size: 13px; transition: all .25s;
}
.nav-cta:hover { background: #0d7de0; box-shadow: 0 4px 12px rgba(24,144,255,.35); }
.nav-burger { display: none; flex-direction: column; gap: 5px; padding: 8px; margin-left: 6px; }
.nav-burger span { width: 20px; height: 2px; background: #fff; border-radius: 2px; }

/* 移动端抽屉 */
.drawer-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 2100;
  opacity: 0; visibility: hidden; transition: all .3s;
}
.drawer-mask.open { opacity: 1; visibility: visible; }
.drawer {
  position: fixed; top: 0; right: -280px; width: 270px; height: 100%; z-index: 2200;
  background: #fff; padding: 20px 18px; transition: right .3s ease; overflow-y: auto;
}
.drawer.open { right: 0; }
.drawer-item {
  display: block; padding: 13px 12px; font-size: var(--fs-body); color: var(--text);
  border-bottom: 1px solid var(--line);
}
.drawer-item:active { color: var(--blue); }
.drawer .btn-primary { width: 100%; margin-top: 18px; height: 42px; }

/* ---------- Banner ---------- */
.hero { position: relative; min-height: calc(100vh - var(--nav-h)); height: calc(100vh - var(--nav-h)); overflow: hidden; background: var(--deep); display: flex; align-items: stretch; }
@media (max-width: 767px) { .hero { min-height: calc(100vh - var(--nav-h)); height: calc(100vh - var(--nav-h)); } }
.hero-particles { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; display: block; pointer-events: none; }
.hero-slides { position: absolute; inset: 0; z-index: 0; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity .9s ease;
  background-size: cover; background-position: center;
}
.hero-slide.active { opacity: 1; }
.hero-slide::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(0,15,35,.94) 0%, rgba(0,21,41,.72) 42%, rgba(0,21,41,.28) 72%, rgba(0,21,41,.18) 100%),
    linear-gradient(180deg, rgba(0,21,41,.35) 0%, transparent 28%, transparent 72%, rgba(0,21,41,.55) 100%),
    radial-gradient(ellipse 60% 80% at 78% 50%, rgba(24,144,255,.18), transparent 55%);
}
.hero-glow {
  position: absolute; z-index: 1; width: 640px; height: 640px; border-radius: 50%;
  background: radial-gradient(circle, rgba(64,169,255,.22), rgba(114,46,209,.08) 42%, transparent 68%);
  top: -160px; right: -100px; pointer-events: none;
  animation: heroGlowPulse 6s ease-in-out infinite;
}
@keyframes heroGlowPulse {
  0%, 100% { opacity: .75; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}
.hero-inner {
  position: relative; z-index: 2; height: 100%;
  display: flex; flex-direction: column; justify-content: center; color: #fff;
  pointer-events: none;
}
.hero-inner a, .hero-inner button { pointer-events: auto; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  height: 26px; padding: 0 12px; border-radius: 13px; font-size: var(--fs-small); letter-spacing: 2px;
  background: rgba(24,144,255,.16); border: 1px solid rgba(64,169,255,.4); color: #9FD0FF;
  margin-bottom: 22px;
}
.hero-title { font-size: var(--hero-title); font-weight: 700; line-height: 1.3; letter-spacing: 1px; }
.hero-title2 { font-size: var(--hero-title2); font-weight: 600; margin-top: 6px;
  background: linear-gradient(90deg, #40A9FF, #B37FEB); -webkit-background-clip: text;
  background-clip: text; color: transparent; }
.hero-desc { margin-top: 14px; font-size: var(--fs-body); color: rgba(255,255,255,.78); max-width: 560px; line-height: 1.7; }
.hero-actions { margin-top: 24px; display: flex; gap: 12px; }
.hero-arrows { position: absolute; z-index: 5; inset: 0; display: flex; justify-content: space-between; align-items: center; padding: 0 28px; pointer-events: none; }
.hero-arrow {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255,255,255,.4);
  color: #fff; font-size: 18px; transition: all .25s; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.25); pointer-events: auto; cursor: pointer;
}
.hero-arrow:hover { background: var(--blue); border-color: transparent; }
.hero-dots { position: absolute; z-index: 5; left: 50%; transform: translateX(-50%); bottom: 28px; display: flex; gap: 8px; }
.hero-dots i { width: 20px; height: 3px; border-radius: 2px; background: rgba(255,255,255,.3); cursor: pointer; transition: all .3s; }
.hero-dots i.active { width: 32px; background: var(--blue); }
.hero-counter { position: absolute; z-index: 5; right: 36px; bottom: 26px; color: rgba(255,255,255,.6); font-size: var(--fs-small); }

/* ---------- 首页简介 ---------- */
.about-sum h2 { font-size: var(--fs-h2); color: var(--deep); margin-bottom: 6px; }
.about-sum .sub { font-size: var(--fs-body); color: var(--blue); font-weight: 600; margin-bottom: 14px; }
.about-sum p { color: var(--text-2); margin-bottom: 10px; }
.about-sum .btns { margin-top: 16px; }
.about-stats { flex: 0 0 420px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 20px; text-align: left; transition: all .3s;
}
.stat-card:hover { border-color: rgba(24,144,255,.35); box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.stat-card .num {
  font-size: 26px; font-weight: 700; line-height: 1.2;
  background: var(--grad-90); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-card .lab { color: var(--text-2); font-size: var(--fs-small); margin-top: 6px; }

/* AI 能力条 */
.ai-cap-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 40px; }
.ai-cap-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 18px; transition: all .3s; position: relative; overflow: hidden;
}
.ai-cap-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad-90); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.ai-cap-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.ai-cap-card:hover::before { transform: scaleX(1); }
.ai-cap-card .no { font-size: var(--fs-small); color: var(--text-3); letter-spacing: 2px; }
.ai-cap-card .ico {
  width: 44px; height: 44px; border-radius: var(--radius); margin: 12px 0 14px;
  background: linear-gradient(135deg, rgba(24,144,255,.12), rgba(114,46,209,.12));
  display: flex; align-items: center; justify-content: center;
}
.ai-cap-card h4 { font-size: var(--fs-h3); color: var(--deep); margin-bottom: 8px; }
.ai-cap-card p { font-size: var(--fs-body); color: var(--text-2); }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 24px; overflow: hidden; transition: all .3s ease; display: flex; flex-direction: column;
}
.product-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad-90); transform: scaleX(0); transform-origin: left; transition: transform .35s;
}
.product-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-5px); border-color: transparent; }
.product-card:hover::before { transform: scaleX(1); }
.product-card .p-no { font-size: var(--fs-small); color: var(--text-3); letter-spacing: 2px; }
.product-card .p-ico {
  width: 52px; height: 52px; border-radius: var(--radius); margin: 14px 0 18px;
  background: linear-gradient(135deg, rgba(24,144,255,.1), rgba(114,46,209,.1));
  display: flex; align-items: center; justify-content: center;
  transition: transform .35s ease;
}
.product-card:hover .p-ico { transform: scale(1.08) rotate(-4deg); }
.product-card h3 { font-size: var(--fs-h3); color: var(--deep); margin-bottom: 6px; }
.product-card .p-tag { font-size: var(--fs-small); color: var(--blue); margin-bottom: 12px; }
.product-card p { font-size: var(--fs-body); color: var(--text-2); flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.product-card .p-more {
  margin-top: 18px; font-size: var(--fs-body); color: var(--blue); display: inline-flex; align-items: center; gap: 4px;
}
.product-card:hover .p-more { gap: 8px; }

/* SVG 图标通用 */
.ico svg { width: 26px; height: 26px; stroke: url(#g1); }

/* ---------- 解决方案 ---------- */
.solution-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.solution-card {
  position: relative; border-radius: var(--radius); overflow: hidden; height: 300px;
  display: block; box-shadow: var(--shadow);
}
.solution-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.solution-card:hover img { transform: scale(1.06); }
.solution-card .mask {
  position: absolute; inset: 0; padding: 24px 20px; color: #fff;
  display: flex; flex-direction: column; justify-content: flex-end;
  background: linear-gradient(180deg, rgba(0,21,41,.15) 0%, rgba(0,21,41,.88) 100%);
}
.solution-card .mask .tag {
  align-self: flex-start; font-size: var(--fs-small); padding: 2px 10px; border-radius: 2px;
  background: rgba(24,144,255,.25); border: 1px solid rgba(64,169,255,.5); margin-bottom: 10px;
}
.solution-card h3 { font-size: clamp(17px, 1vw + 8px, 21px); margin-bottom: 6px; }
.solution-card p { font-size: var(--fs-body); color: rgba(255,255,255,.75);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: all .3s; display: block;
}
.case-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.case-card .cover { position: relative; height: 200px; overflow: hidden; }
.case-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .cover img { transform: scale(1.05); }
.case-card .cover .ind {
  position: absolute; left: 14px; top: 14px; font-size: var(--fs-small); color: #fff;
  padding: 3px 10px; border-radius: 2px; background: rgba(0,21,41,.62); backdrop-filter: blur(4px);
}
.case-card .body { padding: 20px; }
.case-card h3 { font-size: var(--fs-h3); color: var(--deep); margin-bottom: 8px; line-height: 1.5; }
.case-card p { font-size: var(--fs-body); color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.case-card .metric-mini { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-size: var(--fs-small); color: var(--purple); font-weight: 600; }

/* 合作客户名录 */
.partner-block { margin-top: 8px; display: flex; flex-direction: column; gap: 28px; }
.partner-group h4 {
  text-align: center; font-size: var(--fs-h3); color: var(--text-1); margin-bottom: 16px; font-weight: 600;
}
.partner-list {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px;
  max-width: 1100px; margin: 0 auto;
}
.partner-list li {
  padding: 10px 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  font-size: var(--fs-body); color: var(--text-2); text-align: center; line-height: 1.4;
}

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s; display: block; }
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.news-card .cover { height: 180px; overflow: hidden; }
.news-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-card:hover .cover img { transform: scale(1.05); }
.news-card .body { padding: 18px 20px 22px; }
.news-card .meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.news-card .meta .cat { font-size: var(--fs-small); color: var(--blue); border: 1px solid rgba(24,144,255,.35); padding: 1px 8px; border-radius: 2px; }
.news-card .meta time { font-size: var(--fs-small); color: var(--text-3); }
.news-card h3 { font-size: var(--fs-h3); color: var(--deep); line-height: 1.55; margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card p { font-size: var(--fs-body); color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* tab 筛选 */
.tab-bar { display: flex; justify-content: center; gap: 10px; margin-bottom: 36px; flex-wrap: wrap; }
.tab-bar button {
  padding: 7px 22px; border-radius: 20px; font-size: var(--fs-body); color: var(--text-2);
  border: 1px solid var(--line); background: #fff; transition: all .25s;
}
.tab-bar button.active { background: var(--grad); color: #fff; border-color: transparent; }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 44px; }
.pagination a, .pagination span {
  min-width: 34px; height: 34px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff; font-size: var(--fs-body); color: var(--text-2);
}
.pagination .current { background: var(--grad); color: #fff; border-color: transparent; }

/* ---------- 页脚 ---------- */
.footer { position: relative; color: rgba(255,255,255,.7); background: linear-gradient(180deg, #001529 0%, #003A70 100%); overflow: hidden; }
.footer::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 85% 0%, rgba(114,46,209,.22), transparent 45%);
}
.footer .container { position: relative; }
/* 四列按内容排布，列间距用 space-between 均分 */
.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding: 56px 0 40px;
}
.footer-brand { flex: 0 1 280px; max-width: 280px; min-width: 0; }
.footer-brand .f-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .f-logo .dot {
  width: 32px; height: 32px; border-radius: var(--radius); background: var(--grad);
  display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700;
}
.footer-brand .f-logo .name { color: #fff; font-size: 16px; font-weight: 600; }
.footer-brand p { font-size: var(--fs-body); line-height: 1.9; }
.footer-cols { display: contents; }
.footer-col { flex: 0 0 auto; min-width: 0; }
.footer-col h5 { color: #fff; font-size: var(--fs-h3); margin-bottom: 16px; }
.footer-col a { display: block; font-size: var(--fs-body); margin-bottom: 11px; transition: color .2s; }
.footer-col a:hover { color: var(--blue-light); }
.footer-col .li { font-size: var(--fs-body); margin-bottom: 11px; display: flex; gap: 8px; }
.footer-col .li b { color: rgba(255,255,255,.9); font-weight: 500; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; font-size: var(--fs-small); text-align: center; }
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: var(--blue-light); }
.footer-bottom .sep { margin: 0 10px; color: rgba(255,255,255,.25); }

/* ---------- 关于我们 ---------- */
.about-detail .lead-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: stretch; }
.about-detail .lead-grid img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.about-detail h3 { font-size: clamp(18px, 1.1vw + 9px, 22px); color: var(--deep); margin-bottom: 14px; }
.about-detail p { color: var(--text-2); margin-bottom: 14px; }
.timeline { position: relative; max-width: 900px; margin: 10px auto 0; padding: 20px 0; }
.timeline::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--blue), var(--purple)); transform: translateX(-50%); }
.tl-item { position: relative; width: 50%; padding: 14px 38px; }
.tl-item:nth-child(odd) { left: 0; text-align: right; }
.tl-item:nth-child(even) { left: 50%; }
.tl-item .dot {
  position: absolute; top: 26px; width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 3px solid var(--blue); box-shadow: 0 0 0 4px rgba(24,144,255,.15);
}
.tl-item:nth-child(odd) .dot { right: -6px; }
.tl-item:nth-child(even) .dot { left: -6px; }
.tl-year { font-size: 22px; font-weight: 800;
  background: var(--grad-90); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tl-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-top: 8px;
  font-size: var(--fs-body); color: var(--text-2); box-shadow: var(--shadow); }
.tl-item[data-stage] { padding-top: 14px; }
.tl-stage {
  position: absolute; top: 4px; transform: translateX(12px); z-index: 3;
  background: linear-gradient(135deg, var(--blue), var(--purple)); color: #fff;
  font-size: var(--fs-small); font-weight: 600; padding: 2px 12px; border-radius: 12px;
  white-space: nowrap; letter-spacing: 1px; box-shadow: 0 3px 10px rgba(24,144,255,.35);
}
.tl-item:nth-child(odd) .tl-stage { left: 100%; }
.tl-item:nth-child(even) .tl-stage { left: 0; }
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.honor-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 18px; text-align: center; cursor: default; transition: all .3s; }
.honor-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.honor-card .h-ico { width: 54px; height: 54px; margin: 0 auto 14px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(24,144,255,.1), rgba(114,46,209,.1)); display: flex; align-items: center; justify-content: center; }
.honor-card h4 { font-size: var(--fs-h3); color: var(--deep); margin-bottom: 8px; }
.honor-card .org { font-size: var(--fs-small); color: var(--blue); margin-bottom: 6px; }
.honor-card p { font-size: var(--fs-small); color: var(--text-3); }
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.team-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 20px; text-align: center; }
.team-avatar {
  width: 76px; height: 76px; border-radius: var(--radius); margin: 0 auto 16px;
  background: var(--grad); color: #fff; font-size: 26px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.team-card h4 { font-size: var(--fs-h3); color: var(--deep); }
.team-card .role { font-size: var(--fs-small); color: var(--blue); margin: 6px 0 10px; }
.team-card p { font-size: var(--fs-small); color: var(--text-2); }

/* 灯箱 */
.lightbox { position: fixed; inset: 0; z-index: 300; background: rgba(0,0,0,.8);
  display: none; align-items: center; justify-content: center; padding: 30px; }
.lightbox.open { display: flex; }
.lightbox-card { background: #fff; border-radius: var(--radius); max-width: 520px; width: 100%; padding: 40px 34px; text-align: center; position: relative; }
.lightbox-card .close { position: absolute; right: 14px; top: 10px; font-size: var(--fs-h3); color: var(--text-3); width: 32px; height: 32px; }
.lightbox-card .big-ico { width: 80px; height: 80px; margin: 0 auto 18px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(24,144,255,.12), rgba(114,46,209,.12)); display: flex; align-items: center; justify-content: center; }

/* ---------- 产品详情 ---------- */
.pd-hero { position: relative; padding: 64px 0 56px; color: #fff; overflow: hidden;
  background: linear-gradient(135deg, #003A70 0%, #001529 100%); }
.pd-hero::before { content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 75% 20%, rgba(114,46,209,.25), transparent 45%); }
.pd-hero .container { position: relative; display: flex; gap: 44px; align-items: center; }
.pd-hero .info { flex: 1.1; }
.pd-hero .pno { font-size: var(--fs-small); letter-spacing: 3px; color: #9FD0FF; }
.pd-hero h1 { font-size: clamp(23px, 2.4vw + 6px, 40px); margin: 10px 0 8px; }
.pd-hero .tagline { font-size: var(--fs-h3); color: #B37FEB; margin-bottom: 16px; }
.pd-hero p { color: rgba(255,255,255,.78); max-width: 600px; }
.pd-hero .pic { flex: .9; border-radius: var(--radius); overflow: hidden; box-shadow: 0 18px 50px rgba(0,0,0,.4); }
.pd-hero .pic img { width: 100%; }
.pd-section h2 { font-size: clamp(20px, 1.5vw + 10px, 28px); color: var(--deep); margin-bottom: 8px; }
.pd-section .pd-sub { color: var(--text-2); margin-bottom: 16px; }
.highlight-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.highlight-list li {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px;
  position: relative; font-size: var(--fs-body); color: var(--text-2);
}
/* 智能化能力 - 重点模块 */
.ai-block { background: linear-gradient(135deg, #0A1E3F 0%, #140A35 100%); border-radius: 6px; padding: 48px 40px; position: relative; overflow: hidden; }
.ai-block::before { content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(24,144,255,.18), transparent 40%),
    radial-gradient(circle at 90% 100%, rgba(114,46,209,.20), transparent 40%); }
.ai-block .a-head { position: relative; text-align: center; margin-bottom: 34px; }
.ai-block .a-head .badge { display: inline-block; font-size: var(--fs-small); letter-spacing: 2px; padding: 3px 14px; border-radius: 2px;
  background: rgba(64,169,255,.18); border: 1px solid rgba(64,169,255,.45); color: #9FD0FF; margin-bottom: 12px; }
.ai-block .a-head h2 { color: #fff; font-size: clamp(20px, 1.5vw + 10px, 28px); }
.ai-block .a-head p { color: rgba(255,255,255,.6); margin-top: 8px; font-size: var(--fs-body); }
.ai-grid { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ai-item { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 22px; transition: all .3s; }
.ai-item:hover { background: rgba(255,255,255,.09); border-color: rgba(64,169,255,.5); transform: translateY(-3px); }
.ai-item h4 { color: #fff; font-size: var(--fs-h3); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.ai-item h4::before { content: ''; width: 6px; height: 14px; border-radius: 2px; background: var(--grad-90); }
.ai-item .tech { display: inline-block; font-size: var(--fs-small); color: #9FD0FF; background: rgba(24,144,255,.12);
  border: 1px solid rgba(64,169,255,.3); padding: 1px 8px; border-radius: 2px; margin-bottom: 10px; }
.ai-item p { font-size: var(--fs-body); color: rgba(255,255,255,.68); }
.ai-item .metric { margin-top: 12px; font-size: var(--fs-h3); font-weight: 700;
  background: var(--grad-90); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ai-compare { position: relative; margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.compare-card { border-radius: var(--radius); padding: 22px 24px; font-size: var(--fs-body); }
.compare-card.old { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.6); }
.compare-card.new { background: linear-gradient(135deg, rgba(24,144,255,.16), rgba(114,46,209,.16)); border: 1px solid rgba(64,169,255,.4); color: rgba(255,255,255,.88); }
.compare-card h5 { color: #fff; font-size: var(--fs-h3); margin-bottom: 10px; }
.compare-card li { margin-bottom: 7px; padding-left: 18px; position: relative; }
.compare-card.old li::before { content: '—'; position: absolute; left: 0; }
.compare-card.new li::before { content: '✓'; position: absolute; left: 0; color: #5BD68A; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; transition: all .3s; }
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.feature-card .f-no { font-size: var(--fs-small); color: var(--text-3); }
.feature-card h4 { font-size: var(--fs-h3); color: var(--deep); margin: 8px 0 8px; }
.feature-card p { font-size: var(--fs-body); color: var(--text-2); }
.scenario-chips { display: flex; flex-wrap: wrap; gap: 12px; }
.scenario-chips li { padding: 9px 20px; background: #fff; border: 1px solid var(--line); border-radius: 20px; font-size: var(--fs-body); color: var(--text-2); }
.pd-metrics { display: flex; gap: 16px; margin-top: 26px; flex-wrap: wrap; }
.pd-metrics .m {
  flex: 1; min-width: 180px; background: #fff; border: 1px solid var(--line); border-top: 3px solid; border-image: var(--grad-90) 1;
  border-radius: var(--radius); padding: 22px; text-align: left;
}
.pd-metrics .m b { display: block; font-size: 26px;
  background: var(--grad-90); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pd-metrics .m span { font-size: var(--fs-small); color: var(--text-2); }

/* 通用内容块 */
.block-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 28px; margin-bottom: 16px; }
.block-card h3 { font-size: var(--fs-h2); color: var(--deep); margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.block-card h3::before { content: ''; width: 4px; height: 18px; border-radius: 2px; background: var(--grad-90); }
.block-card p { color: var(--text-2); margin-bottom: 12px; line-height: 1.9; }
.plain-list li { position: relative; padding-left: 20px; margin-bottom: 12px; color: var(--text-2); }
.plain-list li::before { content: ''; position: absolute; left: 2px; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }

/* 方案详情 */
.sol-detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.value-card { background: linear-gradient(135deg, rgba(24,144,255,.08), rgba(114,46,209,.08));
  border: 1px solid rgba(24,144,255,.2); border-radius: var(--radius); padding: 24px 18px; text-align: left; }
.value-card b { display: block; font-size: var(--fs-h3); color: var(--purple); margin-bottom: 8px; line-height: 1.4; }
.value-card span { font-size: var(--fs-small); color: var(--text-2); }

/* 案例详情指标表 */
.metric-table { width: 100%; border-collapse: collapse; font-size: var(--fs-body); }
.metric-table th, .metric-table td { padding: 14px 16px; border: 1px solid var(--line); text-align: left; }
.metric-table th { background: #F0F6FF; color: var(--deep); font-weight: 600; }
.metric-table td.before { color: var(--text-3); }
.metric-table td.after { color: var(--blue); font-weight: 700; font-size: var(--fs-body); }
.metric-table td.delta { color: #52A85F; font-weight: 600; }
.metric-wrap { overflow-x: auto; }

/* 新闻详情 */
.article { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 44px 56px; }
.article h1 { font-size: 26px; color: var(--deep); line-height: 1.5; text-align: center; }
.article .art-meta { text-align: center; color: var(--text-3); font-size: var(--fs-small); margin: 16px 0 28px; }
.article .art-content { color: var(--text); font-size: var(--fs-body); line-height: 2; }
.article .art-content img { border-radius: var(--radius); margin: 18px auto; }
.art-nav { display: flex; justify-content: space-between; margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); font-size: var(--fs-body); }
.art-nav a { color: var(--text-2); }
.art-nav a:hover { color: var(--blue); }

/* 岗位 */
.job-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.job-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; transition: all .3s; display: block; }
.job-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: rgba(24,144,255,.3); }
.job-card .j-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.job-card h3 { font-size: var(--fs-h3); color: var(--deep); }
.job-card .salary { color: var(--purple); font-weight: 700; font-size: var(--fs-h3); white-space: nowrap; }
.job-card .j-info { margin-top: 12px; font-size: var(--fs-body); color: var(--text-3); display: flex; gap: 18px; flex-wrap: wrap; }
.job-card .j-go { margin-top: 14px; font-size: var(--fs-body); color: var(--blue); }

/* 表单 */
.form-wrap { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 40px; }
.form-row { margin-bottom: 20px; }
.form-row label { display: block; font-size: var(--fs-body); color: var(--deep); margin-bottom: 8px; font-weight: 500; }
.form-row label .req { color: #F56C6C; margin-left: 2px; }
.form-row input[type=text], .form-row input[type=tel], .form-row input[type=email],
.form-row input[type=file], .form-row select, .form-row textarea {
  width: 100%; height: 42px; padding: 0 14px; border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; outline: none; transition: border-color .2s; color: var(--text);
}
.form-row textarea { height: auto; padding: 12px 14px; resize: vertical; min-height: 110px; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { border-color: var(--blue); }
.form-row .err { color: #F56C6C; font-size: var(--fs-small); margin-top: 5px; display: none; }
.form-row.invalid input, .form-row.invalid textarea { border-color: #F56C6C; }
.form-row.invalid .err { display: block; }
.captcha-row { display: flex; gap: 12px; }
.captcha-row input { flex: 1; }
.captcha-img { width: 110px; height: 42px; border-radius: var(--radius); border: 1px solid var(--line); cursor: pointer; }
.form-tip { font-size: var(--fs-small); color: var(--text-3); margin-top: 6px; }
.form-success { display: none; text-align: center; padding: 48px 20px; }
.form-success.show { display: block; }
.form-success .s-ico { width: 64px; height: 64px; border-radius: 50%; background: #E8F8EE; color: #52A85F;
  font-size: 32px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; }
.form-success h3 { color: var(--deep); margin-bottom: 10px; }
.form-success p { color: var(--text-2); }

/* 联系我们 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 26px; align-items: start; }
.contact-info-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.contact-info-card .ci-head { padding: 28px 30px; color: #fff; background: linear-gradient(135deg, #003A70, #001529); }
.contact-info-card .ci-head h3 { font-size: var(--fs-h3); }
.contact-info-card .ci-head p { color: rgba(255,255,255,.7); font-size: var(--fs-body); margin-top: 6px; }
.ci-list { padding: 12px 30px 26px; }
.ci-item { display: flex; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.ci-item:last-child { border-bottom: none; }
.ci-item .ci-ico { width: 38px; height: 38px; border-radius: var(--radius); flex-shrink: 0;
  background: linear-gradient(135deg, rgba(24,144,255,.1), rgba(114,46,209,.1)); display: flex; align-items: center; justify-content: center; }
.ci-item .k { font-size: var(--fs-small); color: var(--text-3); }
.ci-item .v { font-size: var(--fs-body); color: var(--deep); font-weight: 600; }
.ci-item .v a:hover { color: var(--blue); }
.map-box {
  height: 260px; margin: 0 30px 28px; border-radius: var(--radius);
  position: relative; overflow: hidden; isolation: isolate; z-index: 0;
  background: #EAF3FC; border: 1px solid var(--line);
  display: flex; flex-direction: column; transform: translateZ(0);
}
.map-box .map-canvas,
.map-box .map-iframe {
  flex: 1; width: 100%; min-height: 0; border: 0; background: #EAF3FC; display: block;
}
.map-box .leaflet-container { width: 100%; height: 100%; z-index: 0 !important; }
.map-box .leaflet-pane, .map-box .leaflet-top, .map-box .leaflet-bottom { z-index: auto; }
.map-box .leaflet-control { z-index: 2 !important; }
.map-box .map-link {
  position: relative; z-index: 3; flex-shrink: 0; display: flex; align-items: center; justify-content: center; height: 34px;
  font-size: var(--fs-small); color: var(--blue); background: #fff; border-top: 1px solid var(--line);
}
.map-box .map-link:hover { background: #F0F7FF; }
.map-panel {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 28px 20px 24px; flex: 1;
  background:
    linear-gradient(rgba(24,144,255,.07) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, rgba(24,144,255,.07) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(160deg, #E8F4FF 0%, #D6E9FB 100%);
}
.map-panel-pin {
  width: 18px; height: 18px; border-radius: 50% 50% 50% 0; background: var(--blue);
  transform: rotate(-45deg); margin-bottom: 14px;
  box-shadow: 0 0 0 8px rgba(24,144,255,.18);
}
.map-panel-title { font-size: 15px; font-weight: 600; color: var(--deep); margin-bottom: 6px; }
.map-panel-addr { font-size: 13px; color: var(--text-2); line-height: 1.6; max-width: 280px; margin-bottom: 16px; }
.map-panel-btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; padding: 0 18px; border-radius: var(--radius);
  background: var(--blue); color: #fff; font-size: 13px; transition: background .2s;
}
.map-panel-btn:hover { background: #0d7de0; color: #fff; }

/* CTA 条 */
.cta-band { position: relative; padding: 56px 0; color: #fff; text-align: center; overflow: hidden;
  background: linear-gradient(135deg, #003A70, #001529); }
.cta-band::before { content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 120%, rgba(114,46,209,.35), transparent 55%); }
.cta-band .container { position: relative; }
.cta-band h2 { font-size: clamp(20px, 1.6vw + 8px, 30px); margin-bottom: 10px; }
.cta-band p { color: rgba(255,255,255,.72); margin-bottom: 24px; }
.cta-band .phone { font-size: 30px; font-weight: 800; letter-spacing: 1px;
  background: var(--grad-90); -webkit-background-clip: text; background-clip: text; color: transparent;
  cursor: default; user-select: text; }
.cta-band .actions { margin-top: 22px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* 搜索结果页 */
.result-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 26px; margin-bottom: 16px; display: block; transition: all .25s; }
.result-item:hover { box-shadow: var(--shadow); border-color: rgba(24,144,255,.3); }
.result-item .r-top { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.result-item .r-cat { font-size: var(--fs-small); color: var(--blue); border: 1px solid rgba(24,144,255,.3); padding: 1px 8px; border-radius: 2px; }
.result-item .r-date { font-size: var(--fs-small); color: var(--text-3); }
.result-item h3 { font-size: var(--fs-h3); color: var(--deep); margin-bottom: 6px; }
.result-item h3 b, .result-item p b { color: var(--blue); }
.result-item p { font-size: var(--fs-body); color: var(--text-2); }
.empty-state { text-align: center; padding: 70px 20px; color: var(--text-3); }
.empty-state .e-ico { font-size: 44px; margin-bottom: 14px; }

/* 面包屑下内容留白 */
.page-body { padding: 40px 0 70px; }

/* ============================================================
 * 右侧悬浮客服（参考网易智企样式）
 * ============================================================ */
.cs-float { position: fixed; right: 20px; bottom: 28px; z-index: 150; display: flex; flex-direction: column; align-items: flex-end; gap: 14px; }
.cs-card { background: #fff; border-radius: 10px; box-shadow: 0 6px 24px rgba(0,21,41,.14); overflow: hidden; }
.cs-menu { width: 72px; opacity: 0; visibility: hidden; transform: translateY(8px) scale(.95); transform-origin: bottom right; pointer-events: none; transition: opacity .25s, transform .25s, visibility .25s; }
.cs-menu.show { opacity: 1; visibility: visible; transform: translateY(0) scale(1); pointer-events: auto; }
.cs-menu button { width: 100%; padding: 12px 4px 10px; display: flex; flex-direction: column; align-items: center; gap: 4px;
  font-size: 11px; color: var(--text-2); transition: background .2s; position: relative; }
.cs-menu button + button { border-top: 1px solid var(--line); }
.cs-menu button:hover { background: #F0F7FF; color: var(--blue); }
.cs-menu svg { width: 22px; height: 22px; }
.cs-btns { width: 52px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.cs-main-btn {
  width: 52px; height: 52px; border-radius: 50%; background: var(--blue); color: #fff;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 18px rgba(24,144,255,.4);
  position: relative; transition: transform .2s, background .2s; flex-shrink: 0;
}
.cs-main-btn:hover { background: #0d7de0; transform: translateY(-2px); }
.cs-main-btn svg { width: 26px; height: 26px; }
.cs-top {
  width: 52px; height: 52px; background: #fff; border-radius: 50%; border: 1px solid var(--line);
  box-shadow: 0 4px 14px rgba(0,21,41,.1);
  display: flex; align-items: center; justify-content: center; color: var(--blue);
  opacity: 0; visibility: hidden; transition: all .25s; flex-shrink: 0;
  pointer-events: none;
}
.cs-top.show { opacity: 1; visibility: visible; pointer-events: auto; }
.cs-top:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.cs-top svg { width: 18px; height: 18px; }
/* 迷你留言面板 */
.cs-lead {
  position: fixed; right: 84px; bottom: 28px; z-index: 149; width: 300px; background: #fff;
  border-radius: 10px; box-shadow: 0 8px 28px rgba(0,21,41,.16); padding: 18px 18px 16px;
  display: none;
}
.cs-lead.show { display: block; }
.cs-lead h5 { font-size: 15px; color: var(--deep); margin-bottom: 4px; }
.cs-lead .tip { font-size: 12px; color: var(--text-3); margin-bottom: 12px; }
.cs-lead .close-x { position: absolute; right: 10px; top: 10px; color: var(--text-3); width: 24px; height: 24px; }
.cs-lead input, .cs-lead textarea {
  width: 100%; border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 10px;
  margin-bottom: 8px; font-size: 13px; outline: none;
}
.cs-lead textarea { min-height: 72px; resize: vertical; }
.cs-lead input:focus, .cs-lead textarea:focus { border-color: var(--blue); }
.cs-lead .btn-primary { width: 100%; height: 36px; font-size: 13px; background: var(--blue); }
/* 欢迎气泡 */
.cs-bubble {
  position: fixed; right: 84px; bottom: 100px; z-index: 149; width: 240px; background: #fff;
  border-radius: 10px; box-shadow: 0 8px 28px rgba(0,21,41,.14); padding: 14px 16px;
  opacity: 0; transform: translateY(8px); transition: all .3s; pointer-events: none;
}
.cs-bubble.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.cs-bubble::after {
  content: ''; position: absolute; right: -6px; bottom: 18px; border: 6px solid transparent; border-left-color: #fff;
}
.cs-bubble .b-close { position: absolute; right: 8px; top: 6px; color: var(--text-3); font-size: 14px; width: 22px; height: 22px; }
.cs-bubble h4 { font-size: 14px; color: var(--deep); margin-bottom: 6px; padding-right: 18px; }
.cs-bubble p { font-size: 12px; color: var(--text-2); line-height: 1.6; }

/* 弹出小卡片（电话） */
.cs-pop {
  position: fixed; right: 84px; bottom: 100px; z-index: 149; width: 220px; background: #fff; border-radius: 10px;
  box-shadow: 0 8px 28px rgba(0,21,41,.14); padding: 18px; display: none; text-align: center;
}
.cs-pop.show { display: block; }
.cs-pop h5 { font-size: 14px; color: var(--deep); margin-bottom: 10px; }
.cs-pop .tel-num { font-size: 20px; font-weight: 700; color: var(--blue); margin: 6px 0 4px; }
.cs-pop .tel-sub { font-size: var(--fs-small); color: var(--text-3); margin-bottom: 14px; }
.cs-qr { width: 140px; height: 140px; margin: 0 auto 10px; border-radius: var(--radius);
  background:
    linear-gradient(45deg, #000 25%, transparent 25%, transparent 75%, #000 75%) 0 0/16px 16px,
    linear-gradient(45deg, #000 25%, #fff 25%, #fff 75%, #000 75%) 8px 8px/16px 16px,
    #fff;
  border: 8px solid #fff; box-shadow: 0 0 0 1px var(--line); position: relative;
}
.cs-qr::after { content: '微信'; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.86); color: #07C160; font-size: var(--fs-body); font-weight: 700; }
.cs-pop p { font-size: var(--fs-small); color: var(--text-2); }

/* 聊天窗口 · 深色科技风，对齐全站品牌 */
.cs-panel {
  position: fixed; right: 24px; bottom: 100px; z-index: 220; width: 372px; height: 540px; max-height: calc(100vh - 120px);
  background: linear-gradient(165deg, #0B1C33 0%, #0A1528 48%, #0D1830 100%);
  border-radius: 14px; overflow: hidden;
  display: none; flex-direction: column; animation: csIn .28s ease;
  border: 1px solid rgba(64,169,255,.28);
  box-shadow: 0 18px 48px rgba(0,21,41,.45), 0 0 0 1px rgba(255,255,255,.04) inset;
}
.cs-panel.show { display: flex; }
@keyframes csIn { from { opacity: 0; transform: translateY(16px) scale(.98); } to { opacity: 1; transform: none; } }
.cs-panel-head {
  height: 62px; padding: 0 14px; display: flex; align-items: center; gap: 10px;
  background: linear-gradient(120deg, rgba(0,58,112,.95) 0%, rgba(24,144,255,.35) 55%, rgba(114,46,209,.4) 100%);
  color: #fff; flex-shrink: 0; border-bottom: 1px solid rgba(64,169,255,.22);
  position: relative;
}
.cs-panel-head::after {
  content: ''; position: absolute; left: 14px; right: 14px; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(64,169,255,.55), transparent);
}
.cs-panel-head .h-ava {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #1890FF, #722ED1);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px;
  box-shadow: 0 4px 12px rgba(24,144,255,.35);
}
.cs-panel-head .h-title { flex: 1; min-width: 0; }
.cs-panel-head .h-title b { font-size: 14px; display: block; line-height: 1.3; font-weight: 600; letter-spacing: .3px; }
.cs-panel-head .h-title small { font-size: 11px; opacity: .78; color: #B8D4F0; }
.cs-panel-head .h-btn { width: 28px; height: 28px; border-radius: 8px; color: rgba(255,255,255,.85); font-size: 14px; }
.cs-panel-head .h-btn:hover { background: rgba(255,255,255,.12); color: #fff; }
.cs-body {
  flex: 1; overflow-y: auto; padding: 18px 14px;
  background:
    radial-gradient(ellipse at 80% 0%, rgba(24,144,255,.12), transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(114,46,209,.1), transparent 45%),
    linear-gradient(rgba(64,169,255,.04) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, rgba(64,169,255,.04) 1px, transparent 1px) 0 0 / 24px 24px;
}
.cs-time {
  text-align: center; font-size: 11px; color: rgba(184,212,240,.55); margin-bottom: 14px;
  letter-spacing: .5px;
}
.msg { display: flex; gap: 8px; margin-bottom: 16px; }
.msg .m-ava {
  width: 32px; height: 32px; border-radius: 9px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: #fff;
}
.msg.bot .m-ava { background: linear-gradient(135deg, #1890FF, #722ED1); }
.msg.me { flex-direction: row-reverse; }
.msg.me .m-ava { background: #003A70; border: 1px solid rgba(64,169,255,.35); }
.msg .bubble {
  max-width: 78%; padding: 11px 14px; border-radius: 12px 12px 12px 4px;
  font-size: 13px; line-height: 1.7; word-break: break-word;
  background: rgba(255,255,255,.06); color: #E8F1FA;
  border: 1px solid rgba(64,169,255,.18);
  backdrop-filter: blur(8px);
}
.msg.me .bubble {
  background: linear-gradient(135deg, rgba(24,144,255,.9), rgba(64,120,255,.85));
  color: #fff; border-color: transparent; border-radius: 12px 12px 4px 12px;
}
.msg .bubble img { border-radius: 6px; margin: 6px 0; }
.msg .bubble a { color: #69C0FF; text-decoration: underline; }
.msg.me .bubble a { color: #fff; }
.msg-card {
  margin-top: 8px; border: 1px solid rgba(64,169,255,.25); border-radius: 8px; overflow: hidden;
  background: rgba(0,21,41,.45);
}
.msg-card .mc-img { height: 90px; background: linear-gradient(135deg, #003A70, #2B1660); position: relative; }
.msg-card .mc-body { padding: 10px 12px; }
.msg-card .mc-body b { font-size: 13px; color: #E8F1FA; display: block; margin-bottom: 3px; }
.msg-card .mc-body span { font-size: 12px; color: rgba(184,212,240,.7); }
.typing { display: inline-flex; gap: 4px; padding: 4px 0; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: #40A9FF; animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .2s; }
.typing i:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 60%, 100% { opacity: .3; } 30% { opacity: 1; } }
.quick-chips {
  padding: 8px 14px 10px; display: flex; gap: 8px; flex-wrap: wrap;
  border-top: 1px solid rgba(64,169,255,.12); background: rgba(0,21,41,.25);
}
.quick-chips button {
  font-size: 12px; padding: 6px 12px; border-radius: 6px;
  background: rgba(24,144,255,.1); border: 1px solid rgba(64,169,255,.28);
  color: #9FD0FF; transition: all .2s;
}
.quick-chips button:hover {
  color: #fff; border-color: rgba(64,169,255,.6);
  background: rgba(24,144,255,.28);
}
.cs-tools { height: 40px; padding: 0 12px; display: flex; align-items: center; gap: 14px; background: #fff; border-top: 1px solid var(--line); flex-shrink: 0; }
.cs-tools button { color: #7A8896; font-size: 17px; width: 28px; height: 28px; }
.cs-tools button:hover { color: var(--blue); }
.cs-input-row {
  display: flex; gap: 10px; padding: 12px 14px; flex-shrink: 0; align-items: flex-end;
  background: rgba(0,21,41,.55); border-top: 1px solid rgba(64,169,255,.16);
}
.cs-input-row textarea {
  flex: 1; border: 1px solid rgba(64,169,255,.22); outline: none; resize: none;
  height: 40px; max-height: 90px; font-size: 13px; line-height: 1.6;
  padding: 9px 12px; border-radius: 8px;
  background: rgba(255,255,255,.05); color: #E8F1FA;
  overflow-y: auto; scrollbar-width: none; -ms-overflow-style: none;
}
.cs-input-row textarea::-webkit-scrollbar { width: 0; height: 0; }
.cs-input-row textarea::placeholder { color: rgba(184,212,240,.4); }
.cs-input-row textarea:focus { border-color: rgba(24,144,255,.55); background: rgba(24,144,255,.08); }
.cs-send {
  height: 40px; padding: 0 18px; border-radius: 8px; color: #fff; font-size: 13px; font-weight: 600;
  background: linear-gradient(135deg, #1890FF, #4B6CFF); transition: opacity .2s, transform .2s;
  box-shadow: 0 4px 14px rgba(24,144,255,.3);
}
.cs-send:hover { transform: translateY(-1px); }
.cs-send:disabled { opacity: .4; cursor: not-allowed; transform: none; box-shadow: none; }
.leave-card {
  margin-top: 8px; border: 1px solid rgba(64,169,255,.28); border-radius: 8px;
  padding: 12px; background: rgba(24,144,255,.08);
}
.leave-card input, .leave-card textarea {
  width: 100%; border: 1px solid rgba(64,169,255,.22); border-radius: 6px;
  padding: 7px 10px; margin-bottom: 8px; font-size: 13px; outline: none;
  background: rgba(0,21,41,.4); color: #E8F1FA;
}
.leave-card input::placeholder, .leave-card textarea::placeholder { color: rgba(184,212,240,.4); }
.leave-card textarea { min-height: 54px; resize: vertical; }
.leave-card button {
  width: 100%; height: 34px; border-radius: 6px; color: #fff; font-size: 13px;
  background: linear-gradient(135deg, #1890FF, #722ED1);
}

/* ============================================================
 * 响应式：平板 ≤1199px
 * ============================================================ */
@media (max-width: 1199px) {
  .nav-menu a { padding: 0 10px; }
  .nav-logo .name { font-size: var(--fs-body); }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-cap-row { grid-template-columns: repeat(3, 1fr); }
  .honor-grid, .team-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid, .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .about-sum .wrap { flex-direction: column; }
  .about-stats { flex: none; width: 100%; }
  .about-detail .lead-grid { grid-template-columns: 1fr; }
  .pd-hero .container { flex-direction: column; }
  .footer-main { flex-wrap: wrap; gap: 28px 40px; }
  .footer-brand { flex: 1 1 100%; max-width: none; }
}

/* ============================================================
 * 响应式：手机 ≤767px
 * ============================================================ */
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .nav { padding: 0 16px; }
  .nav-menu, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .section { padding: 28px 0; }
  .section-head { margin-bottom: 18px; }
  .hero { height: 480px; }
  .hero-title { letter-spacing: 1px; }
  .hero-arrows { padding: 0 12px; }
  .hero-arrow { width: 36px; height: 36px; font-size: 15px; }
  .hero-counter { right: 20px; bottom: 32px; }
  .hero-actions .btn-ghost { display: none; }
  .page-hero { padding: calc(var(--nav-h) + 28px) 0 40px; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .stat-card { padding: 18px 12px; }
  .stat-card .num { font-size: 24px; }
  .ai-cap-row { grid-template-columns: 1fr; }
  .product-grid, .solution-grid, .case-grid, .news-grid { grid-template-columns: 1fr; }
  .partner-list { grid-template-columns: 1fr; }
  .solution-card { height: 240px; }
  .honor-grid, .team-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .pd-hero { padding: 44px 0; }
  .highlight-list { grid-template-columns: 1fr; }
  .ai-block { padding: 32px 18px; }
  .ai-grid, .feature-grid, .ai-compare, .sol-detail-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .article { padding: 28px 18px; }
  .job-list { grid-template-columns: 1fr; }
  .form-wrap { padding: 24px 18px; }
  .contact-grid { grid-template-columns: 1fr; }
  .block-card { padding: 24px 18px; }
  .ci-list { padding: 10px 18px 20px; }
  .map-box { margin: 0 18px 22px; }
  .cta-band .phone { font-size: 23px; }
  /* 时间轴转纵向 */
  .timeline::before { left: 8px; }
  .tl-item, .tl-item:nth-child(odd), .tl-item:nth-child(even) { width: 100%; left: 0; text-align: left; padding: 10px 0 10px 32px; }
  .tl-item:nth-child(odd) .dot, .tl-item:nth-child(even) .dot { left: 2px; right: auto; }
  /* 客服移动端 */
  .cs-float { right: 12px; bottom: 20px; gap: 12px; }
  .cs-menu { width: 64px; }
  .cs-menu button { font-size: 11px; padding: 10px 4px; }
  .cs-btns { width: 48px; gap: 10px; }
  .cs-main-btn, .cs-top { width: 48px; height: 48px; }
  .cs-bubble { right: 72px; width: 220px; bottom: 88px; }
  .cs-pop, .cs-lead { right: 72px; left: 12px; width: auto; }
  .cs-panel { right: 0; bottom: 0; left: 0; width: 100%; height: 100%; max-height: 100%; border-radius: 0; }
  .footer-main { flex-direction: column; padding: 40px 0 28px; gap: 28px; }
  .footer-brand { flex: none; max-width: none; width: 100%; }
  .footer-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; width: 100%; }
  .footer-col:last-child { grid-column: 1 / -1; }
  .metric-table { font-size: var(--fs-small); }
  .metric-table th, .metric-table td { padding: 10px 8px; }
}

/* ---------- ���� / 4K���ֺ��������ٷŴ� ---------- */
@media (min-width: 1920px) {
  :root {
    --fs-body: 16px;
    --fs-h2: 26px;
    --fs-h3: 17px;
    --fs-small: 13px;
    --nav-h: 52px;
    --container: 1600px;
    --hero-title: clamp(32px, 2.4vw, 44px);
    --hero-title2: clamp(18px, 1.4vw, 28px);
    --page-hero-h1: clamp(24px, 1.6vw, 34px);
  }
  .map-box { height: 280px; }
  .stat-card .num { font-size: 30px; }
}
@media (min-width: 2560px) {
  :root {
    --fs-body: 17px;
    --fs-h2: 28px;
    --fs-h3: 18px;
    --fs-small: 14px;
    --nav-h: 56px;
    --container: 1760px;
    --hero-title: clamp(36px, 2vw, 48px);
    --hero-title2: clamp(20px, 1.2vw, 30px);
    --page-hero-h1: clamp(26px, 1.4vw, 36px);
  }
  .map-box { height: 300px; }
  .nav-menu a { font-size: 15px; }
  .nav-cta { height: 34px; font-size: 14px; padding: 0 18px; }
}
@media (min-width: 3840px) {
  :root {
    --fs-body: 18px;
    --fs-h2: 32px;
    --fs-h3: 20px;
    --fs-small: 15px;
    --nav-h: 60px;
    --container: 2000px;
    --hero-title: 52px;
    --hero-title2: 32px;
    --page-hero-h1: 40px;
  }
  .map-box { height: 320px; }
  .stat-card .num { font-size: 36px; }
}