/* ============================================
   智联科技官网 - 共享样式（全站通用）
   ============================================ */
:root {
  --primary: #2D7FF9;
  --primary-dark: #1B5FD9;
  --primary-light: #E8F1FE;
  --ink: #16233A;
  --ink-2: #5A6B85;
  --ink-3: #9AA8BF;
  --bg: #FFFFFF;
  --bg-gray: #F5F7FA;
  --navy: #0C1B33;
  --line: #E4EAF3;
  --radius: 14px;
  --shadow-hover: 0 16px 40px rgba(45, 127, 249, .16);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { width: min(1180px, 92%); margin: 0 auto; }
section { padding: 72px 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 32px; border-radius: 8px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; transition: all .25s ease;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(45,127,249,.32); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary); border-radius: 999px; }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.18); }

/* ---------- 版块标题 ---------- */
.sec-head { margin-bottom: 40px; }
.sec-head h2 { font-size: 30px; letter-spacing: .02em; position: relative; padding-left: 18px; }
.sec-head h2::before {
  content: ""; position: absolute; left: 0; top: 10px; bottom: 10px;
  width: 5px; border-radius: 4px; background: var(--primary);
}
.sec-head p { color: var(--ink-2); margin-top: 8px; }

/* ---------- 导航 ---------- */
header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; letter-spacing: .04em; }
.logo svg { width: 36px; height: 36px; }
.nav-links { display: flex; gap: 40px; font-size: 15px; color: var(--ink-2); }
.nav-links a { padding: 6px 0; transition: color .2s; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-cta { padding: 10px 24px; font-size: 14px; border-radius: 999px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; }

/* ---------- 首页首屏 ---------- */
.hero {
  background:
    radial-gradient(680px 380px at 85% 20%, rgba(125,180,255,.35), transparent 65%),
    radial-gradient(560px 420px at 70% 100%, rgba(45,127,249,.18), transparent 60%),
    linear-gradient(115deg, #EAF2FD 0%, #DCEAFB 45%, #CFE2FA 100%);
  overflow: hidden;
}
.hero-inner {
  display: grid; grid-template-columns: 1.02fr .98fr; gap: 30px;
  align-items: center; min-height: 520px; padding: 60px 0;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.7); border: 1px solid rgba(45,127,249,.35);
  color: var(--primary); font-size: 13px; font-weight: 600;
  padding: 6px 18px; border-radius: 999px; margin-bottom: 24px;
}
.hero h1 { font-size: 44px; line-height: 1.3; letter-spacing: .01em; color: #101B2E; }
.hero p.sub { color: var(--ink-2); font-size: 17px; margin: 18px 0 34px; }
.hero-actions { display: flex; gap: 16px; }
.hero-trust {
  margin-top: 46px; display: flex; flex-wrap: wrap; align-items: center;
  gap: 14px; color: var(--ink-2); font-size: 13.5px;
}
.hero-trust i { width: 1px; height: 14px; background: #C6D6EC; }
.hero-visual { position: relative; }
.hero-visual img {
  width: 118%; max-width: none; display: block; margin: -6% -10% -12% 0;
  mix-blend-mode: multiply; pointer-events: none;
}

/* ---------- 内页横幅 ---------- */
.page-banner {
  background:
    radial-gradient(620px 320px at 88% 30%, rgba(125,180,255,.3), transparent 65%),
    linear-gradient(115deg, #EAF2FD 0%, #D8E7FA 100%);
  padding: 84px 0 64px;
}
.page-banner h1 { font-size: 36px; color: #101B2E; }
.page-banner p { color: var(--ink-2); margin-top: 10px; }
.page-banner .crumb { font-size: 13px; color: var(--ink-3); margin-bottom: 14px; }
.page-banner .crumb a:hover { color: var(--primary); }

/* ---------- 客户条 ---------- */
.clients { padding: 40px 0 8px; }
.clients-band {
  background: var(--bg-gray); border: 1px solid var(--line); border-radius: 16px;
  padding: 26px 34px; display: flex; align-items: center; justify-content: space-between;
  gap: 18px; flex-wrap: wrap;
}
.client-tile {
  width: 120px; height: 58px; border-radius: 10px; background: #E8ECF2;
  display: grid; place-items: center; color: #C2CCDA; transition: all .25s;
}
.client-tile:hover { color: var(--ink-3); background: #EDF1F7; }
.client-tile svg { width: 30px; height: 30px; }

/* ---------- 核心业务 ---------- */
.biz { background: var(--bg-gray); }
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.biz-card {
  background: #fff; border-radius: var(--radius); padding: 36px 22px;
  border: 1px solid var(--line); text-align: center; transition: all .3s ease;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
.biz-icon {
  width: 62px; height: 62px; border-radius: 15px; display: grid; place-items: center;
  background: var(--primary-light); color: var(--primary); margin: 0 auto 18px;
}
.biz-icon svg { width: 30px; height: 30px; }
.biz-card h3 { font-size: 18px; margin-bottom: 8px; }
.biz-card p { font-size: 13.5px; color: var(--ink-2); }

/* 服务清单卡（解决方案/关于页用） */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.svc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 30px 26px; transition: all .3s ease;
}
.svc-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); border-color: transparent; }
.svc-card .head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.svc-card .head .biz-icon { margin: 0; width: 52px; height: 52px; }
.svc-card h3 { font-size: 18px; }
.svc-card ul li {
  position: relative; padding: 7px 0 7px 22px; font-size: 14px; color: var(--ink-2);
  border-bottom: 1px dashed var(--line);
}
.svc-card ul li:last-child { border-bottom: none; }
.svc-card ul li::before {
  content: ""; position: absolute; left: 4px; top: 16px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--primary);
}

/* ---------- 数据条 ---------- */
.stats { background: linear-gradient(120deg, #0C1B33, #12294E 60%, #16386B); padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { text-align: center; color: #fff; border-left: 1px solid rgba(255,255,255,.14); }
.stat:first-child { border-left: none; }
.stat b { font-size: 44px; font-weight: 800; display: block; line-height: 1.2; }
.stat b span { color: #6FA9F8; }
.stat p { color: rgba(255,255,255,.65); margin-top: 4px; font-size: 14px; letter-spacing: .08em; }

/* ---------- 解决方案卡 ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.sol-card {
  border-radius: var(--radius); overflow: hidden; background: #fff;
  border: 1px solid var(--line); transition: all .3s ease;
}
.sol-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.sol-cover { height: 190px; display: grid; place-items: center; color: rgba(255,255,255,.95); }
.sol-cover svg { width: 84px; height: 84px; }
.sol-cover.c1 { background: linear-gradient(135deg, #DCEBFE, #8FBCFB 55%, #4D9AFF); }
.sol-cover.c2 { background: linear-gradient(135deg, #E3E9F5, #A8C4E8 55%, #5D86C7); }
.sol-cover.c3 { background: linear-gradient(135deg, #D8F1EA, #7ED3B9 55%, #2FA984); }
.sol-body { padding: 22px 26px 26px; }
.sol-body h3 { font-size: 18px; }
.sol-body p { font-size: 13.5px; color: var(--ink-2); margin-top: 6px; }

/* ---------- 成功案例 ---------- */
.cases { background: var(--bg-gray); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); transition: all .3s ease;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-cover { height: 150px; background: #EEF2F7; display: grid; place-items: center; color: #C2CCDA; }
.case-cover svg { width: 44px; height: 44px; }
.case-body { padding: 20px 24px 24px; }
.case-body h3 { font-size: 17px; }
.case-body p { font-size: 13.5px; color: var(--ink-2); margin: 8px 0 14px; }
.case-body .tag {
  display: inline-block; font-size: 12px; color: var(--primary);
  background: var(--primary-light); padding: 3px 12px; border-radius: 999px;
}

/* ---------- 新闻列表 ---------- */
.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);
  padding: 26px 26px 22px; display: flex; flex-direction: column; transition: all .3s ease;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); border-color: transparent; }
.news-card .meta { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.news-card .tag {
  font-size: 12px; color: var(--primary); background: var(--primary-light);
  padding: 2px 10px; border-radius: 999px;
}
.news-card .date { font-size: 12.5px; color: var(--ink-3); }
.news-card h3 { font-size: 16.5px; line-height: 1.5; }
.news-card p { font-size: 13.5px; color: var(--ink-2); margin: 10px 0 16px; flex: 1; }
.news-card .more { font-size: 13px; color: var(--primary); font-weight: 600; }

/* ---------- 资质荣誉 ---------- */
.qua-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.qua-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; display: flex; gap: 16px; align-items: flex-start; transition: all .3s ease;
}
.qua-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
.qua-card .biz-icon { margin: 0; flex: none; width: 52px; height: 52px; }
.qua-card h3 { font-size: 16px; margin-bottom: 6px; }
.qua-card p { font-size: 13px; color: var(--ink-2); }

/* ---------- 公司简介 ---------- */
.about-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; align-items: center; }
.about-wrap .pic {
  height: 320px; border-radius: 18px; background: #EEF2F7;
  display: grid; place-items: center; color: #C2CCDA;
}
.about-wrap .pic svg { width: 60px; height: 60px; }
.about-wrap p { color: var(--ink-2); font-size: 15px; margin-bottom: 14px; }
.about-vals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 26px; }
.about-vals .v {
  background: var(--bg-gray); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; text-align: center;
}
.about-vals .v b { display: block; font-size: 16px; margin-bottom: 4px; }
.about-vals .v span { font-size: 12.5px; color: var(--ink-2); }

/* ---------- 联系页 ---------- */
.contact-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 44px; align-items: start; }
.contact-info li { display: flex; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-info .biz-icon { margin: 0; flex: none; width: 48px; height: 48px; }
.contact-info b { display: block; font-size: 15px; margin-bottom: 2px; }
.contact-info span { font-size: 13.5px; color: var(--ink-2); }
.contact-form {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 34px; box-shadow: 0 10px 30px rgba(22,35,58,.06);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; font-family: inherit; color: var(--ink); background: #FBFCFE;
  outline: none; transition: border .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); }
.field textarea { resize: vertical; min-height: 110px; }
.contact-form .btn { width: 100%; }
.form-tip { font-size: 12.5px; color: var(--ink-3); margin-top: 12px; text-align: center; }

/* ---------- CTA（通栏） ---------- */
.cta { padding: 0; }
.cta-band { background: linear-gradient(100deg, #4D9AFF 0%, var(--primary) 45%, #1B5FD9 100%); padding: 44px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.cta-inner h2 { color: #fff; font-size: 28px; letter-spacing: .03em; }

/* ---------- 页脚 ---------- */
footer { background: var(--navy); color: rgba(255,255,255,.75); padding: 56px 0 0; font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.2fr 1.1fr 1.2fr; gap: 44px; padding-bottom: 44px; }
.foot-brand .logo { color: #fff; margin-bottom: 12px; }
.foot-brand .slogan { color: rgba(255,255,255,.55); font-size: 13px; letter-spacing: .08em; }
footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; letter-spacing: .06em; }
.foot-list li { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.foot-list svg { width: 16px; height: 16px; flex: none; color: #6FA9F8; }
.foot-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; }
.foot-nav a:hover { color: #fff; }
.foot-addr p { margin-bottom: 10px; }
.foot-addr .beian { color: rgba(255,255,255,.45); font-size: 12.5px; }
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0;
  color: rgba(255,255,255,.4); font-size: 12.5px; text-align: center;
}

/* ---------- 滚动入场 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.on { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; min-height: 0; padding: 46px 0 10px; }
  .hero-visual { order: -1; }
  .hero-visual img { width: 86%; margin: 0 auto; }
  .hero h1 { font-size: 32px; }
  .page-banner h1 { font-size: 28px; }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
  .stat:nth-child(3) { border-left: none; }
  .sol-grid, .case-grid, .news-grid, .qua-grid { grid-template-columns: 1fr 1fr; }
  .svc-grid { grid-template-columns: 1fr; }
  .about-wrap, .contact-wrap { grid-template-columns: 1fr; gap: 30px; }
  .about-vals { grid-template-columns: repeat(3, 1fr); }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; gap: 0; padding: 10px 6%;
    border-bottom: 1px solid var(--line); box-shadow: 0 16px 30px rgba(22,35,58,.1);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 0; }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }
}
@media (max-width: 600px) {
  section { padding: 56px 0; }
  .biz-grid, .sol-grid, .case-grid, .news-grid, .qua-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-trust { gap: 10px; }
  .clients-band { justify-content: center; }
}