/* ============================================================
   设计系统 - 科技公司官网（呼叫中心 / 网络运维）
   配色：科技蓝主色 + 深海蓝深色区 + 青绿辅助
   ============================================================ */

:root {
  --c-primary: #185FA5;
  --c-primary-dark: #0C447C;
  --c-deep: #042C53;
  --c-deep-2: #04342C;
  --c-light-blue: #E6F1FB;
  --c-teal: #0F6E56;
  --c-teal-light: #E1F5EE;
  --c-text: #2C2C2A;
  --c-text-2: #5F5E5A;
  --c-text-3: #888780;
  --c-bg: #FFFFFF;
  --c-bg-soft: #F1EFE8;
  --c-border: #D3D1C7;
  --c-border-soft: #E5E3DB;

  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1200px;

  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system,
    BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------------- 导航 ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--c-border-soft);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
  color: var(--c-deep);
}
.logo-mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #185FA5, #0C447C);
  display: grid; place-items: center;
  color: #fff; font-size: 16px;
}
.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  font-size: 15px;
  color: var(--c-text-2);
}
.nav-links a:hover { color: var(--c-primary); }
.nav-cta {
  background: var(--c-primary);
  color: #fff !important;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 14px;
  transition: background .2s;
}
.nav-cta:hover { background: var(--c-primary-dark); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-outline { background: #fff; color: var(--c-primary); border-color: var(--c-primary); }
.btn-outline:hover { background: var(--c-light-blue); }

/* ---------------- 首页 Hero（深色大图） ---------------- */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background: var(--c-deep);
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .55;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(4,44,83,.92) 0%, rgba(4,44,83,.55) 55%, rgba(4,44,83,.25) 100%);
}
.hero .container { position: relative; z-index: 2; padding: 80px 24px; }
.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 2px;
  color: #85B7EB;
  border: 1px solid rgba(133,183,235,.4);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: 44px;
  line-height: 1.25;
  font-weight: 600;
  max-width: 720px;
}
.hero p.lede {
  font-size: 18px;
  color: #B5D4F4;
  margin: 22px 0 36px;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-tags {
  margin-top: 44px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  color: #9FB8D4;
  font-size: 14px;
}
.hero-tags span::before { content: "● "; color: #1D9E75; }

/* ---------------- 区块通用 ---------------- */
.section { padding: 90px 0; }
.section-soft { background: var(--c-bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 54px; text-align: center; }
.section-head .kicker {
  color: var(--c-primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
}
.section-head h2 {
  font-size: 32px;
  margin: 12px 0 14px;
  color: var(--c-text);
}
.section-head p { color: var(--c-text-2); font-size: 16px; }

/* ---------------- 产品卡（首页） ---------------- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.product-card {
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(4,44,83,.12); }
.product-card .thumb {
  height: 200px;
  display: grid;
  place-items: center;
  position: relative;
}
.product-card.blue .thumb { background: var(--c-light-blue); }
.product-card.teal .thumb { background: var(--c-teal-light); }
.product-card .body { padding: 26px 28px 30px; }
.product-card .body h3 { font-size: 21px; margin-bottom: 8px; }
.product-card .body .desc { color: var(--c-text-2); font-size: 15px; margin-bottom: 18px; }
.feature-list { list-style: none; display: grid; gap: 10px; }
.feature-list li { font-size: 14px; color: var(--c-text-2); padding-left: 22px; position: relative; }
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-primary);
}
.product-card.teal .feature-list li::before { background: var(--c-teal); }

/* ---------------- 数据指标 ---------------- */
.metrics {
  background: var(--c-deep);
  color: #fff;
  padding: 56px 0;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.metric .num { font-size: 38px; font-weight: 600; color: #85B7EB; }
.metric .label { color: #B5D4F4; font-size: 14px; margin-top: 6px; }

/* ---------------- 产品与方案页 banner ---------------- */
.page-banner {
  position: relative;
  background: var(--c-deep);
  color: #fff;
  overflow: hidden;
}
.page-banner .hero-bg { opacity: .4; }
.page-banner .hero-overlay {
  background: linear-gradient(120deg, rgba(4,44,83,.94), rgba(4,44,83,.6));
}
.page-banner .container { position: relative; z-index: 2; padding: 110px 24px 90px; }
.page-banner h1 { font-size: 40px; font-weight: 600; }
.page-banner p { color: #B5D4F4; font-size: 17px; margin-top: 16px; max-width: 640px; }
.breadcrumb { font-size: 13px; color: #85B7EB; margin-bottom: 18px; }
.breadcrumb a:hover { text-decoration: underline; }

/* ---------------- 产品详情分区 ---------------- */
.product-block {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 70px 0;
}
.product-block.reverse { grid-template-columns: 1fr 1.05fr; }
.product-block.reverse .pb-visual { order: 2; }
.product-block .pb-text .tag {
  display: inline-block;
  font-size: 13px; font-weight: 600;
  color: var(--c-primary);
  background: var(--c-light-blue);
  padding: 5px 14px; border-radius: 999px;
  margin-bottom: 16px;
}
.product-block .pb-text h2 { font-size: 30px; margin-bottom: 14px; }
.product-block .pb-text .sub { color: var(--c-text-2); font-size: 16px; margin-bottom: 24px; }
.pb-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; margin-bottom: 28px; }
.pb-features .f { display: flex; gap: 12px; }
.pb-features .f .dot {
  flex: 0 0 8px; width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-primary); margin-top: 8px;
}
.pb-features .f .ftext strong { display: block; font-size: 15px; }
.pb-features .f .ftext span { font-size: 13px; color: var(--c-text-3); }

/* 产品视觉（模拟仪表盘） */
.pb-visual {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-border-soft);
  background: var(--c-deep);
  aspect-ratio: 16 / 11;
}
.dash { padding: 18px; height: 100%; color: #cfe2f5; font-size: 12px; }
.dash-bar {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid rgba(255,255,255,.12); padding-bottom: 10px; margin-bottom: 14px;
}
.dash-bar .t { color: #85B7EB; font-weight: 600; }
.dash-bar .status {
  background: var(--c-teal); color: #fff; font-size: 11px;
  padding: 3px 10px; border-radius: 999px;
}
.dash-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.dash-stat { background: rgba(255,255,255,.06); border-radius: 8px; padding: 10px; }
.dash-stat .v { font-size: 20px; font-weight: 600; color: #fff; }
.dash-stat .l { font-size: 11px; color: #9FB8D4; }
.dash-chart {
  background: rgba(255,255,255,.04); border-radius: 8px; padding: 10px 12px;
  display: flex; align-items: flex-end; gap: 6px; height: 90px;
}
.dash-chart .bar { flex: 1; background: linear-gradient(180deg,#5DCAA5,#0F6E56); border-radius: 3px 3px 0 0; }
.dash-chart .bar.a { background: linear-gradient(180deg,#85B7EB,#185FA5); }
.dash-line { margin-top: 12px; height: 2px; background: rgba(133,183,235,.25); position: relative; }
.dash-line::after {
  content:""; position:absolute; left:0; top:-3px; width: 70%; height: 8px;
  background: linear-gradient(90deg, transparent, #1D9E75); border-radius: 4px;
}

/* ---------------- 解决方案 ---------------- */
.sol-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.sol-card {
  background: #fff; border: 1px solid var(--c-border-soft);
  border-radius: var(--radius); padding: 30px 26px;
  transition: border-color .2s, transform .2s;
}
.sol-card:hover { border-color: var(--c-primary); transform: translateY(-4px); }
.sol-card .ic {
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--c-light-blue); color: var(--c-primary);
  display: grid; place-items: center; font-size: 22px; margin-bottom: 18px;
}
.sol-card.teal .ic { background: var(--c-teal-light); color: var(--c-teal); }
.sol-card h3 { font-size: 18px; margin-bottom: 10px; }
.sol-card p { color: var(--c-text-2); font-size: 14px; }

/* ---------------- 典型案例 ---------------- */
.cases { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.case {
  border: 1px solid var(--c-border-soft); border-radius: var(--radius);
  padding: 22px; background: #fff; text-align: center;
}
.case .name { font-weight: 600; font-size: 15px; }
.case .ind { color: var(--c-text-3); font-size: 13px; margin-top: 4px; }

/* ---------------- CTA ---------------- */
.cta {
  background: var(--c-deep);
  color: #fff;
  border-radius: 18px;
  padding: 56px 48px;
  text-align: center;
  margin: 0 auto;
}
.cta h2 { font-size: 28px; margin-bottom: 12px; }
.cta p { color: #B5D4F4; font-size: 16px; margin-bottom: 28px; }
.cta .hero-actions { justify-content: center; }

/* ---------------- 页脚 ---------------- */
.footer { background: #1a1a18; color: #b8b6af; padding: 56px 0 28px; font-size: 14px; }
.footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer a:hover { color: #fff; }
.footer .brand { font-size: 18px; color: #fff; font-weight: 600; margin-bottom: 12px; }
.footer .bottom {
  border-top: 1px solid rgba(255,255,255,.1); margin-top: 36px; padding-top: 20px;
  font-size: 13px; color: #7d7b74; text-align: center;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 32px; }
  .product-grid, .product-block, .product-block.reverse { grid-template-columns: 1fr; }
  .product-block.reverse .pb-visual { order: 0; }
  .metrics-grid { grid-template-columns: repeat(2,1fr); }
  .sol-grid { grid-template-columns: 1fr; }
  .cases { grid-template-columns: repeat(2,1fr); }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
}
@media (max-width: 560px) {
  .metrics-grid, .cases, .footer .cols { grid-template-columns: 1fr; }
  .pb-features { grid-template-columns: 1fr; }
}