/* ============================================================
   上海孖联智能科技有限公司 · 官网样式
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 暗部整体压深，拉开与高光的对比 */
  --ink-900: #03080F;
  --ink-800: #06101F;
  --ink-700: #0B1A2E;
  --ink-600: #12233C;

  /* 品牌蓝：提高纯度与明度，末位更接近电光蓝 */
  --brand-700: #0940C4;
  --brand-600: #0B54E8;
  --brand-500: #1A73FF;
  --brand-400: #4D96FF;
  --brand-300: #9CC4FF;

  /* 强调色：青色/薄荷加亮，用于点缀与高亮 */
  --cyan-400: #00D2EE;
  --teal-400: #00E4AE;

  --paper: #F5F8FC;
  --paper-2: #EDF2F9;
  --white: #FFFFFF;

  --line: #E3EAF4;
  --line-dark: rgba(255, 255, 255, .10);

  --text: #0F1E33;
  --text-2: #33455F;
  --muted: #64758D;

  --grad: linear-gradient(118deg, #0B54E8 0%, #1A73FF 42%, #00D2EE 100%);
  --grad-soft: linear-gradient(118deg, rgba(77,150,255,.16), rgba(0,210,238,.12));

  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 28px;

  --sh-sm: 0 2px 8px rgba(15, 30, 51, .05);
  --sh-md: 0 12px 32px rgba(15, 30, 51, .09);
  --sh-lg: 0 26px 64px rgba(3, 8, 15, .18);
  --sh-brand: 0 14px 38px rgba(10, 84, 232, .40);

  --wrap: 1200px;
  --ease: cubic-bezier(.16, .84, .44, 1);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; }
h1, h2, h3, h4, h5 { margin: 0; line-height: 1.3; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.ico {
  width: 1em; height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }

/* ---------- 入场动画 ----------
   注意：必须置于组件样式之前，否则 .reveal.in 的 transform 会覆盖
   卡片自身的 :hover 位移效果（二者特异度相同，靠源码顺序决胜）。 */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 15px; font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn .ico { width: 17px; height: 17px; transition: transform .25s var(--ease); }
.btn:hover .ico { transform: translateX(3px); }

.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--sh-brand); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 20px 46px rgba(10, 84, 232, .50); }

.btn-ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .28);
  background: rgba(255, 255, 255, .06);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .5); }

.btn-outline-light { border: 1px solid rgba(255, 255, 255, .3); color: #fff; padding: 10px 20px; }
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); }

.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-block { width: 100%; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s;
}
.site-header::after {
  content: ""; position: absolute; inset: 0;
  background: rgba(255, 255, 255, 0);
  border-bottom: 1px solid transparent;
  transition: inherit;
}
.header-inner {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
  gap: 20px;
}

.site-header.is-stuck { background: rgba(255, 255, 255, .92); backdrop-filter: blur(14px); box-shadow: 0 6px 28px rgba(15, 30, 51, .07); }
.site-header.is-stuck::after { border-bottom-color: var(--line); }

/* Logo */
.brand { display: inline-flex; align-items: center; gap: 13px; }
.brand-mark { flex: none; display: flex; align-items: center; }
.brand-mark svg { width: 100%; height: 100%; display: block; }
/* 商标图（白色手写体 Zlinke + 孖联智能，透明底）：深色导航显示白字。
   图内手写体中心位于 36% 高度处（比几何中心高 18.5/129），
   translateY 将手写体中心精确对齐「孖联智能」文字中心：56 × 18.5/129 ≈ 8px */
.brand-mark img { height: 56px; width: auto; display: block; transform: translateY(8px); transition: filter .35s; }
/* 顶栏滚动后变白底，logo 反色为黑字 */
.site-header.is-stuck .brand-mark img { filter: invert(1); }
.brand-text { display: flex; align-items: center; line-height: 1.15; }
.brand-text strong {
  font-size: 23px; font-weight: 800; letter-spacing: .08em;
  color: #fff; transition: color .35s;
}
.site-header.is-stuck .brand-text strong { color: var(--ink-800); }

/* 导航链接 */
.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  padding: 9px 14px;
  font-size: 15px; font-weight: 500;
  color: rgba(255, 255, 255, .82);
  border-radius: 999px;
  transition: color .25s, background .25s;
}
.nav-link::after {
  content: ""; position: absolute; left: 50%; bottom: 3px;
  width: 0; height: 2px; border-radius: 2px; background: var(--cyan-400);
  transform: translateX(-50%);
  transition: width .3s var(--ease);
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after, .nav-link.is-active::after { width: 18px; }

.site-header.is-stuck .nav-link { color: var(--text-2); }
.site-header.is-stuck .nav-link:hover { color: var(--brand-600); background: var(--paper); }
.site-header.is-stuck .nav-link.is-active { color: var(--brand-600); font-weight: 600; }
.site-header.is-stuck .nav-link.is-active::after { width: 18px; }

.nav-cta { margin-left: 12px; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border-radius: 12px;
  color: #fff;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .18);
}
.nav-toggle .ico { width: 22px; height: 22px; }
.nav-toggle .ico-close { display: none; }
.site-header.is-stuck .nav-toggle { color: var(--text); background: var(--paper); border-color: var(--line); }
.nav-open .nav-toggle .ico { display: none; }
.nav-open .nav-toggle .ico-close { display: block; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding: 148px 0 0;
  background: var(--ink-800);
  color: #fff;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(900px 520px at 78% 6%, rgba(0, 210, 238, .30), transparent 62%),
    radial-gradient(760px 480px at 12% 88%, rgba(26, 115, 255, .34), transparent 64%);
}
.glow { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .66; }
.glow-a { width: 420px; height: 420px; top: -120px; right: 8%; background: rgba(0, 210, 238, .48); }
.glow-b { width: 520px; height: 520px; bottom: -220px; left: -80px; background: rgba(26, 115, 255, .46); }

.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 35%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 35%, #000 20%, transparent 78%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
  padding-bottom: 76px;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 16px 7px 12px;
  border-radius: 999px;
  font-size: 13px; font-weight: 600; letter-spacing: .06em;
  color: #BFE4FF;
  background: rgba(77, 150, 255, .18);
  border: 1px solid rgba(77, 150, 255, .42);
}
.pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 0 rgba(0, 210, 238, .7);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 210, 238, .6); }
  70% { box-shadow: 0 0 0 9px rgba(0, 210, 238, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 210, 238, 0); }
}

.hero h1 {
  margin: 22px 0 20px;
  font-size: clamp(32px, 4.4vw, 54px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.22;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #9ECBFF 0%, #00D2EE 48%, #00E4AE 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  max-width: 560px;
  font-size: 16.5px;
  color: rgba(255, 255, 255, .72);
}
.hero-sub strong { color: #fff; font-weight: 600; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 30px; }

.hero-points {
  display: flex; flex-wrap: wrap; gap: 10px 26px;
  font-size: 14.5px; color: rgba(255, 255, 255, .68);
}
.hero-points li { display: inline-flex; align-items: center; gap: 8px; }
.hero-points .ico { width: 16px; height: 16px; color: var(--teal-400); }

/* Hero 视觉：平台面板 */
.hero-visual { position: relative; }
.panel {
  position: relative;
  padding: 20px;
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .04));
  border: 1px solid rgba(255, 255, 255, .16);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .35);
  backdrop-filter: blur(16px);
}
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.panel-title { display: inline-flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 600; color: #EAF3FF; }
.dot-live {
  width: 8px; height: 8px; border-radius: 50%; background: var(--teal-400);
  box-shadow: 0 0 10px rgba(42, 213, 180, .9);
}

.chip {
  padding: 3px 10px; border-radius: 999px;
  font-size: 11.5px; font-weight: 600; letter-spacing: .02em;
}
.chip-ok { color: #7FF0D6; background: rgba(42, 213, 180, .14); border: 1px solid rgba(42, 213, 180, .3); }
.chip-warn { color: #FFD08A; background: rgba(255, 176, 66, .14); border: 1px solid rgba(255, 176, 66, .3); }

.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.kpi {
  padding: 12px 10px; border-radius: var(--r-sm);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .1);
  text-align: center;
}
.kpi b { display: block; font-size: 21px; font-weight: 800; color: #fff; letter-spacing: -.02em; }
.kpi span { font-size: 11.5px; color: rgba(255, 255, 255, .58); }

.chart { margin-top: 14px; padding: 14px; border-radius: var(--r-sm); background: rgba(0, 0, 0, .2); border: 1px solid rgba(255, 255, 255, .07); }
.chart-head { display: flex; align-items: center; justify-content: space-between; font-size: 11.5px; color: rgba(255, 255, 255, .55); margin-bottom: 12px; }
.chart-legend { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend i { width: 8px; height: 8px; border-radius: 2px; background: var(--cyan-400); }

.bars { display: flex; align-items: flex-end; gap: 7px; height: 78px; }
.bars span {
  flex: 1; height: var(--h); border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, #00D2EE, rgba(26, 115, 255, .5));
  animation: grow 1s var(--ease) backwards;
}
.bars span:nth-child(1) { animation-delay: .05s } .bars span:nth-child(2) { animation-delay: .1s }
.bars span:nth-child(3) { animation-delay: .15s } .bars span:nth-child(4) { animation-delay: .2s }
.bars span:nth-child(5) { animation-delay: .25s } .bars span:nth-child(6) { animation-delay: .3s }
.bars span:nth-child(7) { animation-delay: .35s } .bars span:nth-child(8) { animation-delay: .4s }
.bars span:nth-child(9) { animation-delay: .45s } .bars span:nth-child(10) { animation-delay: .5s }
.bars span:nth-child(11) { animation-delay: .55s } .bars span:nth-child(12) { animation-delay: .6s }
@keyframes grow { from { height: 0; opacity: 0; } }

.rows { margin-top: 14px; display: grid; gap: 8px; }
.row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 13px; border-radius: var(--r-xs);
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .07);
  font-size: 13px; color: rgba(255, 255, 255, .8);
}

.float-card {
  position: absolute; left: -26px; bottom: -22px;
  display: flex; align-items: center; gap: 11px;
  padding: 13px 18px;
  border-radius: var(--r-md);
  background: #fff;
  color: var(--ink-800);
  box-shadow: var(--sh-lg);
  animation: floaty 5s ease-in-out infinite;
}
.float-card .ico { width: 24px; height: 24px; color: var(--brand-600); }
.float-card b { display: block; font-size: 13.5px; }
.float-card span { font-size: 11.5px; color: var(--muted); }
@keyframes floaty { 0%, 100% { transform: translateY(0) } 50% { transform: translateY(-9px) } }

/* 数据条 */
.stat-strip {
  position: relative;
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--r-lg);
  overflow: hidden;
  /* 数据条完整保留在深色区内，不与下方白色圆角块重叠，
     避免统计项的说明文字被遮挡 */
  margin-bottom: 0;
}
.stat { padding: 26px 24px; background: rgba(255, 255, 255, .04); }
.stat b {
  display: block; font-size: 30px; font-weight: 800; letter-spacing: -.02em;
  color: #fff;
}
.stat b em { font-size: 15px; font-style: normal; font-weight: 600; color: var(--cyan-400); margin-left: 3px; }
.stat span { font-size: 13.5px; color: rgba(255, 255, 255, .58); }

.hero::after {
  content: ""; display: block; height: 76px; background: var(--white);
  border-radius: 26px 26px 0 0;
  transform: translateY(1px);
}

/* ============================================================
   通用 Section
   ============================================================ */
.section { padding: 96px 0; }
.section-alt { background: var(--paper); }

.sec-head { max-width: 760px; margin-bottom: 52px; }
.sec-tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 15px;
  border-radius: 999px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .1em;
  color: var(--brand-600);
  background: rgba(26, 115, 255, .13);
  border: 1px solid rgba(26, 115, 255, .26);
}
.sec-tag-light { color: #B3DBFF; background: rgba(77, 150, 255, .20); border-color: rgba(77, 150, 255, .42); }
.sec-head h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; letter-spacing: -.02em; }
.sec-desc { margin-top: 16px; font-size: 16px; color: var(--muted); }

/* ---------- 关于我们 ---------- */
.about-grid { display: grid; grid-template-columns: 1.25fr .95fr; gap: 48px; align-items: start; }
.about-main h3 { font-size: 24px; margin-bottom: 18px; }
.about-main p { color: var(--text-2); margin-bottom: 16px; }
.about-main strong { color: var(--brand-600); font-weight: 600; }

.about-list { margin-top: 24px; display: grid; gap: 12px; }
.about-list li {
  display: flex; align-items: flex-start; gap: 11px;
  padding: 12px 16px;
  border-radius: var(--r-sm);
  background: var(--paper);
  border: 1px solid var(--line);
  font-size: 14.5px; color: var(--text-2);
}
.about-list .ico { width: 18px; height: 18px; color: var(--teal-400); margin-top: 3px; }

.about-side { display: grid; gap: 16px; }
.mv-card {
  padding: 24px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.mv-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: rgba(26, 115, 255, .48); }
.mv-ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; margin-bottom: 14px;
  border-radius: 12px; color: #fff;
  background: var(--grad);
  box-shadow: 0 8px 20px rgba(26, 115, 255, .28);
}
.mv-ico .ico { width: 21px; height: 21px; }
.mv-card h4 { font-size: 16.5px; margin-bottom: 8px; }
.mv-card p { font-size: 14px; color: var(--muted); }

/* ---------- 核心业务 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.biz-card {
  position: relative;
  padding: 32px 28px 28px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s;
}
.biz-card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease);
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: transparent; }
.biz-card:hover::before { transform: scaleX(1); }

.biz-no {
  position: absolute; top: 22px; right: 26px;
  font-size: 42px; font-weight: 800; line-height: 1;
  color: var(--paper-2); letter-spacing: -.04em;
  transition: color .4s;
}
.biz-card:hover .biz-no { color: rgba(26, 115, 255, .12); }

.biz-ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; margin-bottom: 20px;
  border-radius: 15px;
  color: var(--brand-600);
  background: var(--grad-soft);
  border: 1px solid rgba(26, 115, 255, .16);
  transition: background .4s, color .4s, transform .4s var(--ease);
}
.biz-ico .ico { width: 26px; height: 26px; }
.biz-card:hover .biz-ico { background: var(--grad); color: #fff; transform: scale(1.06); border-color: transparent; }

.biz-card h3 { font-size: 18.5px; margin-bottom: 12px; }
.biz-card p { font-size: 14.5px; color: var(--muted); }

.biz-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.biz-tags li {
  padding: 4px 11px; border-radius: 999px;
  font-size: 12.5px; color: var(--brand-600);
  background: rgba(26, 115, 255, .07);
}

/* ---------- 解决方案 ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.sol-card {
  padding: 30px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.sol-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.sol-top { display: flex; align-items: center; gap: 14px; margin-bottom: 8px; }
.sol-ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 13px;
  color: #fff; background: var(--grad);
  box-shadow: 0 8px 18px rgba(26, 115, 255, .25);
}
.sol-ico .ico { width: 22px; height: 22px; }
.sol-card h3 { font-size: 19px; }
.sol-sub { font-size: 13.5px; color: var(--brand-500); font-weight: 600; margin-bottom: 18px; }
.sol-card ul { display: grid; gap: 11px; }
.sol-card li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px; color: var(--text-2);
}
.sol-card li::before {
  content: ""; position: absolute; left: 2px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(0, 210, 238, .15);
}

/* ---------- 技术平台 ---------- */
.section-dark { background: var(--ink-800); color: #fff; position: relative; overflow: hidden; }
.section-dark::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(760px 480px at 82% 20%, rgba(0, 210, 238, .14), transparent 60%);
}
.platform-grid {
  position: relative;
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}
.platform-copy h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; margin-bottom: 18px; letter-spacing: -.02em; }
.platform-copy > p { color: rgba(255, 255, 255, .68); font-size: 15.5px; }

.feat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 34px; }
.feat {
  display: flex; gap: 13px;
  padding: 18px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .1);
  transition: background .35s, border-color .35s, transform .35s var(--ease);
}
.feat:hover { background: rgba(255, 255, 255, .10); border-color: rgba(77, 150, 255, .58); transform: translateY(-3px); }
.feat-ico {
  flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 11px;
  color: #9FE9F5; background: rgba(0, 210, 238, .14);
  border: 1px solid rgba(0, 210, 238, .25);
}
.feat-ico .ico { width: 19px; height: 19px; }
.feat h4 { font-size: 15px; margin-bottom: 5px; }
.feat p { font-size: 12.8px; color: rgba(255, 255, 255, .58); line-height: 1.6; }

/* 平台界面模拟 */
.mock-window {
  border-radius: var(--r-lg);
  background: #0E1729;
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 40px 80px rgba(0, 0, 0, .48);
  overflow: hidden;
}
.mock-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, .05);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  font-size: 12px; color: rgba(255, 255, 255, .5);
}
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .18); }
.mock-bar i:first-child { background: #FF6B6B; }
.mock-bar i:nth-child(2) { background: #FFC46B; }
.mock-bar i:nth-child(3) { background: #4ED9A4; }
.mock-bar span { margin-left: 10px; }

.mock-body { display: grid; grid-template-columns: 132px 1fr; }
.mock-side { padding: 16px 12px; border-right: 1px solid rgba(255, 255, 255, .07); display: grid; gap: 5px; align-content: start; }
.mock-side-item {
  padding: 8px 12px; border-radius: 8px;
  font-size: 12.5px; color: rgba(255, 255, 255, .5);
}
.mock-side-item.is-on { color: #fff; background: linear-gradient(100deg, rgba(26, 115, 255, .9), rgba(0, 210, 238, .7)); font-weight: 600; }

.mock-main { padding: 18px; display: grid; gap: 14px; }
.mock-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mock-tile {
  padding: 12px; border-radius: 10px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .08);
}
.mock-tile b { display: block; font-size: 17px; color: #fff; }
.mock-tile span { font-size: 11px; color: rgba(255, 255, 255, .5); }

.mock-chart {
  display: flex; align-items: flex-end; gap: 6px; height: 86px;
  padding: 12px; border-radius: 10px;
  background: rgba(0, 0, 0, .28);
}
.mock-chart span {
  flex: 1; height: var(--h); border-radius: 3px 3px 1px 1px;
  background: linear-gradient(180deg, rgba(0, 210, 238, .95), rgba(26, 115, 255, .35));
}
.mock-line { height: 8px; border-radius: 999px; background: rgba(255, 255, 255, .08); overflow: hidden; }
.mock-line span { display: block; height: 100%; width: 82%; border-radius: 999px; background: linear-gradient(90deg, #1A73FF, #00D2EE); }
.mock-line.short { width: 62%; }
.mock-line.mid { width: 78%; }
.mock-line.short span { width: 64%; }
.mock-line.mid span { width: 71%; }

/* ---------- 服务流程 ---------- */
.steps {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 28px 22px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.step::after {
  content: ""; position: absolute; top: 46px; right: -12px;
  width: 16px; height: 1px; background: var(--line);
}
.step:last-child::after { display: none; }
.step:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.step-no {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; margin-bottom: 16px;
  border-radius: 11px;
  font-size: 14px; font-weight: 800;
  color: #fff; background: var(--grad);
  box-shadow: 0 8px 18px rgba(26, 115, 255, .24);
}
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--muted); }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: var(--sh-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.case-cover { position: relative; height: 172px; display: flex; align-items: center; justify-content: center; }
.case-cover-a { background: linear-gradient(135deg, #BFD9FA, #E4F4F8); }
.case-cover-b { background: linear-gradient(135deg, #C7DCF7, #DDEBFB); }
.case-cover-c { background: linear-gradient(135deg, #BEE7EE, #E2F1F6); }
.case-art { width: 88%; height: auto; }
.case-tag {
  position: absolute; top: 16px; left: 16px;
  padding: 5px 13px; border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: .04em;
  color: #fff; background: rgba(11, 18, 32, .62);
  backdrop-filter: blur(6px);
}
.case-body { padding: 24px; }
.case-body h3 { font-size: 17.5px; margin-bottom: 12px; }
.case-body > p { font-size: 14px; color: var(--muted); }
.case-metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  margin-top: 20px; padding-top: 18px;
  border-top: 1px dashed var(--line);
}
.case-metrics li b { display: block; font-size: 17px; font-weight: 800; color: var(--brand-600); }
.case-metrics li span { font-size: 11.5px; color: var(--muted); }

/* ---------- 云平台入口 ---------- */
.section-cloud {
  background:
    radial-gradient(760px 440px at 50% -10%, rgba(26, 115, 255, .10), transparent 62%),
    linear-gradient(180deg, #FFFFFF 0%, #EFF5FC 100%);
}

.cloud-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.cloud-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 38px 34px 34px;
  border-radius: var(--r-xl);
  background: linear-gradient(155deg, #0B1220 0%, #17293F 100%);
  border: 1px solid rgba(255, 255, 255, .08);
  color: #fff;
  overflow: hidden;
  box-shadow: 0 18px 46px rgba(11, 18, 32, .18);
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s;
}
.cloud-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 34px 72px rgba(11, 18, 32, .30);
  border-color: rgba(77, 150, 255, .42);
}

.cloud-glow {
  position: absolute; top: -130px; right: -110px;
  width: 320px; height: 320px; border-radius: 50%;
  filter: blur(56px); opacity: .55; pointer-events: none;
  transition: opacity .45s, transform .45s var(--ease);
}
.cloud-card--eng .cloud-glow { background: rgba(0, 210, 238, .55); }
.cloud-card--usr .cloud-glow { background: rgba(77, 150, 255, .55); }
.cloud-card:hover .cloud-glow { opacity: .85; transform: scale(1.12); }

.cloud-head { position: relative; display: flex; align-items: center; gap: 15px; margin-bottom: 26px; }
.cloud-ico {
  flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  width: 54px; height: 54px; border-radius: 16px;
  color: #fff;
  background: linear-gradient(140deg, rgba(77, 150, 255, .92), rgba(0, 210, 238, .92));
  box-shadow: 0 10px 24px rgba(26, 115, 255, .35);
}
.cloud-card--usr .cloud-ico {
  background: linear-gradient(140deg, rgba(77, 150, 255, .95), rgba(139, 108, 255, .88));
}
.cloud-ico .ico { width: 27px; height: 27px; }
.cloud-head h3 { font-size: 22px; letter-spacing: -.01em; }
.cloud-head p { font-size: 13.5px; color: rgba(255, 255, 255, .58); margin-top: 4px; }

.cloud-feats { position: relative; display: grid; gap: 12px; margin-bottom: 30px; flex: 1; }
.cloud-feats li {
  position: relative; padding-left: 22px;
  font-size: 14.5px; color: rgba(255, 255, 255, .78); line-height: 1.7;
}
.cloud-feats li::before {
  content: ""; position: absolute; left: 3px; top: 9px;
  width: 7px; height: 7px; border-radius: 2px;
  background: var(--cyan-400);
}
.cloud-card--usr .cloud-feats li::before { background: var(--brand-400); }

.cloud-btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  align-self: flex-start;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px; font-weight: 600;
  color: #fff;
  background: linear-gradient(118deg, #0B54E8, #00D2EE);
  box-shadow: 0 12px 28px rgba(10, 84, 232, .34);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.cloud-card--usr .cloud-btn { background: linear-gradient(118deg, #1A73FF, #8B6CFF); }
.cloud-btn .ico { width: 17px; height: 17px; }
.cloud-card:hover .cloud-btn { transform: translateX(4px); box-shadow: 0 18px 40px rgba(10, 84, 232, .58); }

.cloud-note {
  display: flex; align-items: center; justify-content: center; gap: 9px; flex-wrap: wrap;
  margin-top: 28px;
  font-size: 13.5px; color: var(--muted); text-align: center;
}
.cloud-note .ico { width: 17px; height: 17px; color: var(--brand-500); }
.cloud-note a { color: var(--brand-600); font-weight: 600; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 40px; align-items: start; }
.contact-info { display: grid; gap: 14px; }
.info-item {
  display: flex; gap: 14px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
}
.info-ico {
  flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 12px;
  color: var(--brand-600); background: var(--grad-soft);
  border: 1px solid rgba(26, 115, 255, .14);
}
.info-ico .ico { width: 20px; height: 20px; }
.info-item h4 { font-size: 14.5px; margin-bottom: 4px; }
.info-item p { font-size: 14px; color: var(--text-2); }
.info-item a { color: var(--brand-600); font-weight: 600; }
.info-item em { display: block; font-style: normal; font-size: 12px; color: #A6B3C6; }

.map-box {
  margin-top: 4px;
  height: 190px; border-radius: var(--r-md); overflow: hidden;
  background: linear-gradient(150deg, #EEF4FB, #E3EDF8);
  border: 1px solid var(--line);
  position: relative;
}
.map-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(26, 115, 255, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 115, 255, .09) 1px, transparent 1px);
  background-size: 30px 30px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
}
.map-grid::before {
  content: ""; position: absolute; left: 0; right: 0; top: 52%;
  height: 10px; transform: translateY(-50%) rotate(-4deg);
  background: rgba(26, 115, 255, .13);
}
.map-pin { position: relative; width: 20px; height: 20px; }
.map-pin i {
  position: absolute; inset: 4px; border-radius: 50%;
  background: var(--brand-600);
  box-shadow: 0 0 0 8px rgba(26, 115, 255, .15);
}
.map-pin::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid rgba(26, 115, 255, .5);
  animation: ripple 2.4s infinite;
}
@keyframes ripple { 0% { transform: scale(.6); opacity: .9 } 100% { transform: scale(2.6); opacity: 0 } }
.map-label {
  font-size: 13px; font-weight: 600; color: var(--brand-700);
  padding: 6px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .85);
  border: 1px solid rgba(26, 115, 255, .18);
}

/* 表单 */
.contact-form {
  padding: 34px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-md);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: block; margin-bottom: 16px; }
.field > span { display: block; margin-bottom: 8px; font-size: 13.5px; font-weight: 600; color: var(--text-2); }
.field > span i { color: #E5484D; font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 15px;
  border-radius: var(--r-sm);
  background: var(--paper);
  border: 1.5px solid var(--line);
  font-size: 14.5px;
  color: var(--text);
  transition: border-color .25s, background .25s, box-shadow .25s;
  resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: #A6B3C6; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--brand-400);
  box-shadow: 0 0 0 4px rgba(26, 115, 255, .1);
}
.field.is-error input, .field.is-error select, .field.is-error textarea { border-color: #E5484D; background: #FFF7F7; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, #8496AE 50%), linear-gradient(135deg, #8496AE 50%, transparent 50%); background-position: calc(100% - 20px) 20px, calc(100% - 15px) 20px; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }

.form-tip { margin-top: 14px; font-size: 12.5px; color: #93A1B5; text-align: center; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink-900); color: rgba(255, 255, 255, .66); padding: 68px 0 26px; }
.footer-top {
  display: grid; grid-template-columns: 1.5fr .8fr 1fr 1.1fr; gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.brand-light .brand-text strong { color: #fff; }
.footer-brand p { margin-top: 18px; font-size: 13.5px; line-height: 1.9; }

.footer-links { display: grid; gap: 11px; align-content: start; }
.footer-links h5, .footer-contact h5 { font-size: 14px; color: #fff; margin-bottom: 6px; letter-spacing: .04em; }
.footer-links a { font-size: 13.5px; transition: color .25s, transform .25s; }
.footer-links a:hover { color: var(--cyan-400); }

.footer-contact p { font-size: 13.5px; line-height: 1.9; }
.footer-contact .btn { margin-top: 14px; }

.footer-bottom {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  padding-top: 24px;
  font-size: 12.5px; color: rgba(255, 255, 255, .42);
}

/* ---------- 回到顶部 / Toast ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 14px;
  color: #fff; background: var(--grad);
  box-shadow: var(--sh-brand);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .3s, visibility .3s, transform .3s var(--ease);
}
.to-top .ico { width: 20px; height: 20px; }
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { transform: translateY(-3px); }

.toast {
  position: fixed; left: 50%; bottom: 40px; z-index: 200;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 14.5px; font-weight: 600; color: #fff;
  background: rgba(11, 18, 32, .94);
  box-shadow: var(--sh-lg);
  opacity: 0; visibility: hidden; transform: translate(-50%, 16px);
  transition: opacity .3s, visibility .3s, transform .3s var(--ease);
}
.toast.is-show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.toast.is-error { background: #B4232A; }

/* ---------- 杂项 ---------- */
.footer-meta { color: rgba(255, 255, 255, .32); }
.footer-meta a { color: inherit; text-decoration: none; transition: color .2s; }
.footer-meta a:hover { color: rgba(255, 255, 255, .6); }
.row-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kpi b, .stat b, .mock-tile b { font-variant-numeric: tabular-nums; }
.hero-copy { min-width: 0; }

/* ============================================================
   响应式
   ============================================================ */
/* 导航增加到 8 个条目后，中等宽度需收紧：缩放 logo、压缩链接内边距、收起 CTA */
@media (max-width: 1180px) {
  .brand-mark img { height: 48px; transform: translateY(7px); }
  .brand-text strong { font-size: 20px; }
  .nav-link { padding: 9px 11px; font-size: 14.5px; }
  .nav-cta { display: none; }
}

@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 52px; }
  .hero-sub { max-width: none; }
  .float-card { left: auto; right: 16px; bottom: -18px; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-grid { grid-template-columns: 1fr; gap: 44px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 34px; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step:nth-child(3)::after { display: none; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid .case-card:last-child { grid-column: span 2; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: 76px 0 auto;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 14px 20px 26px;
    background: rgba(255, 255, 255, .98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(15, 30, 51, .1);
    transform: translateY(-12px);
    opacity: 0; visibility: hidden;
    transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
  }
  .nav-open .nav { opacity: 1; visibility: visible; transform: none; }
  .nav-link { color: var(--text-2) !important; padding: 13px 14px; border-radius: 12px; font-size: 16px; }
  .nav-link::after { display: none; }
  .nav-link.is-active { background: var(--paper); color: var(--brand-600) !important; }
  .nav-cta { display: inline-flex; margin: 10px 0 0; }
  .site-header { background: rgba(11, 18, 32, .9); backdrop-filter: blur(14px); }
  .site-header.is-stuck { background: rgba(255, 255, 255, .96); }
}

@media (max-width: 760px) {
  .wrap { width: calc(100% - 32px); }
  .section { padding: 68px 0; }
  .hero { padding-top: 118px; }
  .hero-inner { padding-bottom: 60px; }
  .sec-head { margin-bottom: 36px; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); margin-bottom: 0; }
  /* 数据条为 3 项，窄屏 2 列时让末项独占一行，避免右下留空 */
  .stat-strip .stat:last-child { grid-column: 1 / -1; }
  .hero::after { height: 58px; }
  .stat { padding: 20px 18px; }
  .stat b { font-size: 24px; }
  .biz-grid, .sol-grid, .case-grid, .cloud-grid { grid-template-columns: 1fr; }
  .case-grid .case-card:last-child { grid-column: auto; }
  .cloud-card { padding: 28px 22px 26px; border-radius: var(--r-lg); }
  .cloud-head h3 { font-size: 19px; }
  .cloud-note { justify-content: flex-start; text-align: left; }
  .feat-list { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step::after { display: none; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 24px; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-side { display: none; }
  .mock-tiles { grid-template-columns: repeat(3, 1fr); }
  .to-top { right: 16px; bottom: 16px; }
  .kpis { gap: 8px; }
  .kpi b { font-size: 18px; }
  .hero h1 { font-size: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ========== CMS 动态板块：产品中心 / 新闻动态 ========== */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-card {
  position: relative; overflow: hidden;
  border-radius: var(--r-lg);
  background: #fff; border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s;
}
.prod-card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease);
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: transparent; }
.prod-card:hover::before { transform: scaleX(1); }
.prod-card-img { width: 100%; height: 190px; object-fit: cover; background: var(--paper-2); display: block; }
.prod-card-body { padding: 24px 26px 26px; }
.prod-card h3 { font-size: 18px; margin-bottom: 10px; }
.prod-card-desc { font-size: 14px; color: var(--muted); line-height: 1.75; }
.prod-card-desc p { margin: 0 0 8px; }
.prod-card-desc ul { margin: 0; padding-left: 18px; }
.prod-card-desc li { margin: 4px 0; }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
  border-radius: var(--r-lg); background: #fff; border: 1px solid var(--line);
  overflow: hidden; box-shadow: var(--sh-sm);
  display: flex; flex-direction: column;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.news-card-img { width: 100%; height: 180px; object-fit: cover; background: var(--paper-2); display: block; }
.news-card-body { padding: 22px 24px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.news-card-time { font-size: 12px; color: var(--muted); letter-spacing: .02em; }
.news-card h3 { margin: 0; font-size: 16.5px; }
.news-card-excerpt { font-size: 13.5px; color: var(--text-2); line-height: 1.75; margin: 0; }
.news-card.excerpt-clamp .news-card-excerpt { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

@media (max-width: 1100px) and (min-width: 861px) {
  .prod-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .prod-grid, .news-grid { grid-template-columns: 1fr; }
}