/* ============================================================
   珍遇网络科技 企业官网 - 全站样式
   版式参考天照网络（tianzhao.net）结构，代码与内容均为原创
   ============================================================ */
:root {
  --primary: #1c6ee8;
  --primary-dark: #0e4fae;
  --primary-deep: #0b3c86;
  --accent: #ff8a00;
  --dark: #1f2d3d;
  --text: #4a5666;
  --light: #8a94a6;
  --bg: #f5f7fa;
  --border: #e6eaf2;
  --white: #fff;
  --radius: 8px;
  --shadow: 0 6px 24px rgba(15, 45, 100, 0.08);
  --shadow-hover: 0 12px 32px rgba(15, 45, 100, 0.16);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  background: var(--white);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; border: 0; vertical-align: middle; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: none; }
.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- 顶部信息栏 ---------- */
.topbar {
  background: linear-gradient(90deg, var(--primary-deep), var(--primary-dark));
  color: rgba(255, 255, 255, 0.92);
  font-size: 13px;
  line-height: 36px;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar .hotline { display: flex; align-items: center; gap: 7px; color: #ffd9a8; font-weight: bold; letter-spacing: 0.5px; }
.topbar .hotline svg { width: 15px; height: 15px; }

/* ---------- 导航 ---------- */
.header {
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 900;
  box-shadow: 0 2px 12px rgba(15, 45, 100, 0.08);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { display: flex; align-items: center; gap: 11px; }
.logo-mark {
  width: 44px; height: 44px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 19px; letter-spacing: -1px;
  box-shadow: 0 4px 12px rgba(28, 110, 232, 0.35);
}
.logo-text .cn { font-size: 22px; font-weight: bold; color: var(--dark); letter-spacing: 1px; }
.logo-text .en { font-size: 11px; color: var(--light); letter-spacing: 2px; text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav > li > a {
  display: block; padding: 8px 18px; font-size: 16px; color: var(--dark);
  border-radius: 6px; transition: all 0.25s; position: relative;
}
.nav > li > a:hover, .nav > li > a.active { color: var(--primary); background: #eef4fe; }
.nav > li > a.active::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%);
  bottom: -22px; width: 26px; height: 3px; border-radius: 2px; background: var(--primary);
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2.5px; background: var(--dark); border-radius: 2px; transition: 0.3s; }

/* ---------- 轮播 Banner ---------- */
.banner { position: relative; height: 560px; overflow: hidden; }
.slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden;
  transition: opacity 0.9s ease, visibility 0.9s;
  display: flex; align-items: center;
}
.slide.on { opacity: 1; visibility: visible; }
.slide-blue { background: linear-gradient(115deg, #0b3c86 0%, #1c6ee8 55%, #3f8ef5 100%); }
.slide-dark { background: linear-gradient(115deg, #10233f 0%, #1a4a8f 60%, #2668c9 100%); }
.slide-navy { background: linear-gradient(115deg, #0e2a52 0%, #14549f 55%, #2f7ede 100%); }
.slide::before {
  content: ""; position: absolute; width: 560px; height: 560px; border-radius: 50%;
  right: -140px; top: -180px; background: rgba(255, 255, 255, 0.06);
}
.slide::after {
  content: ""; position: absolute; width: 340px; height: 340px; border-radius: 50%;
  left: -100px; bottom: -160px; background: rgba(255, 255, 255, 0.05);
}
.slide .container { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.slide-txt { color: #fff; max-width: 620px; }
.slide-txt .kicker {
  display: inline-block; padding: 5px 16px; border: 1px solid rgba(255,255,255,0.45);
  border-radius: 999px; font-size: 13px; letter-spacing: 2px; margin-bottom: 20px; color: #d7e6ff;
}
.slide-txt h2 { font-size: 42px; line-height: 1.35; margin-bottom: 16px; letter-spacing: 1px; }
.slide-txt h2 em { font-style: normal; color: #ffd9a8; }
.slide-txt p { font-size: 16px; color: rgba(255,255,255,0.85); margin-bottom: 30px; }
.slide-txt .btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 34px; border-radius: 999px; cursor: pointer;
  font-size: 15px; transition: all 0.25s; text-align: center;
}
.btn-light { background: #fff; color: var(--primary-dark); font-weight: bold; }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.18); }
.btn-ghost { border: 1px solid rgba(255,255,255,0.65); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.14); }
.btn-primary { background: linear-gradient(90deg, var(--primary), var(--primary-dark)); color: #fff; font-weight: bold; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(28,110,232,0.4); }
.slide-art { width: 430px; flex-shrink: 0; }
.banner-dots { position: absolute; bottom: 26px; left: 0; right: 0; display: flex; justify-content: center; gap: 10px; z-index: 5; }
.banner-dots i { width: 34px; height: 5px; border-radius: 3px; background: rgba(255,255,255,0.35); cursor: pointer; transition: 0.3s; }
.banner-dots i.on { background: #fff; }
.banner-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 46px; height: 46px; border-radius: 50%; cursor: pointer;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.3);
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px;
  transition: 0.25s; user-select: none;
}
.banner-arrow:hover { background: rgba(255,255,255,0.28); }
.banner-arrow.prev { left: 3%; }
.banner-arrow.next { right: 3%; }

/* ---------- 通用板块 ---------- */
.section { padding: 78px 0; }
.section.gray { background: var(--bg); }
.sec-head { text-align: center; margin-bottom: 48px; }
.sec-head .en { font-size: 13px; letter-spacing: 4px; color: var(--light); text-transform: uppercase; display: block; margin-bottom: 8px; }
.sec-head h3 { font-size: 30px; color: var(--dark); letter-spacing: 1px; }
.sec-head h3 b { color: var(--primary); }
.sec-head .bar { width: 46px; height: 4px; border-radius: 2px; background: var(--primary); margin: 14px auto 0; }
.sec-head p { margin-top: 14px; color: var(--light); font-size: 14px; }

/* ---------- 三大服务介绍 ---------- */
.intro-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.intro-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 38px 30px; transition: all 0.3s; position: relative; overflow: hidden;
}
.intro-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), #6db3ff); transform: scaleX(0); transform-origin: left; transition: 0.35s;
}
.intro-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.intro-card:hover::before { transform: scaleX(1); }
.intro-icon {
  width: 66px; height: 66px; border-radius: 16px; margin-bottom: 20px;
  background: linear-gradient(135deg, #eaf2ff, #d7e6ff);
  display: flex; align-items: center; justify-content: center; color: var(--primary);
}
.intro-icon svg { width: 34px; height: 34px; }
.intro-card h4 { font-size: 20px; color: var(--dark); margin-bottom: 10px; }
.intro-card p { font-size: 14px; margin-bottom: 18px; min-height: 66px; }
.intro-card .more { font-size: 14px; color: var(--primary); font-weight: bold; display: inline-flex; align-items: center; gap: 6px; }
.intro-card .more:hover { gap: 10px; }

/* ---------- 服务矩阵 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc-item {
  background: var(--white); border-radius: var(--radius); padding: 34px 28px;
  display: flex; gap: 18px; align-items: flex-start;
  border: 1px solid var(--border); transition: all 0.3s;
}
.svc-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
.svc-item .ico {
  flex-shrink: 0; width: 58px; height: 58px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #57a0ff); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 14px rgba(28,110,232,0.3);
}
.svc-item .ico svg { width: 28px; height: 28px; }
.svc-item h4 { font-size: 18px; color: var(--dark); margin-bottom: 8px; }
.svc-item p { font-size: 13.5px; color: var(--light); }

/* ---------- 优势（深色带） ---------- */
.adv-band { background: linear-gradient(120deg, var(--primary-deep), var(--primary-dark) 60%, #2668c9); padding: 78px 0; }
.adv-band .sec-head h3 { color: #fff; }
.adv-band .sec-head .en { color: rgba(255,255,255,0.5); }
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.adv-item {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius); padding: 26px 24px; display: flex; gap: 16px; transition: 0.3s;
}
.adv-item:hover { background: rgba(255,255,255,0.13); transform: translateY(-4px); }
.adv-item .num { font-size: 40px; font-weight: 800; color: rgba(255,255,255,0.22); line-height: 1; font-family: Georgia, serif; }
.adv-item h4 { color: #fff; font-size: 17px; margin-bottom: 6px; }
.adv-item p { color: rgba(255,255,255,0.72); font-size: 13px; }

/* ---------- 营销优势 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-item { text-align: center; padding: 36px 22px; background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); transition: 0.3s; }
.why-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-5px); }
.why-item .badge {
  width: 84px; height: 84px; margin: 0 auto 18px; border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #6db3ff, var(--primary) 70%);
  display: flex; align-items: center; justify-content: center; color: #fff;
  box-shadow: 0 10px 22px rgba(28,110,232,0.35);
}
.why-item .badge svg { width: 38px; height: 38px; }
.why-item h4 { font-size: 18px; color: var(--dark); margin-bottom: 8px; }
.why-item p { font-size: 13.5px; color: var(--light); }

/* ---------- 客户墙 ---------- */
.client-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.client-cell {
  height: 92px; background: var(--white); border: 1px solid var(--border); border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: bold; color: #9aa6bb; letter-spacing: 2px;
  transition: 0.3s; cursor: default;
}
.client-cell:hover { color: var(--primary); border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-3px); }

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(100deg, #10233f, #1a4a8f); color: #fff;
  padding: 56px 0; text-align: center;
}
.cta h3 { font-size: 28px; margin-bottom: 10px; }
.cta p { color: rgba(255,255,255,0.75); margin-bottom: 26px; }

/* ---------- 页脚 ---------- */
.footer { background: #14213a; color: #93a1b8; font-size: 13.5px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 56px 0 44px; }
.footer h5 { color: #fff; font-size: 16px; margin-bottom: 18px; letter-spacing: 1px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .logo-mark { width: 38px; height: 38px; font-size: 16px; }
.footer-brand .cn { color: #fff; font-size: 18px; font-weight: bold; letter-spacing: 1px; }
.footer p.desc { margin-bottom: 14px; line-height: 1.8; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { transition: 0.2s; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact li { display: flex; gap: 9px; margin-bottom: 12px; align-items: flex-start; }
.footer-contact svg { width: 15px; height: 15px; color: var(--primary); flex-shrink: 0; margin-top: 4px; }
.footer-bar { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; text-align: center; font-size: 12.5px; color: #6b7994; }
.footer-bar .links a { margin: 0 8px; }
.footer-bar .links a:hover { color: #fff; }

/* ---------- 子页面头部 ---------- */
.page-hero {
  background: linear-gradient(115deg, var(--primary-deep) 0%, var(--primary-dark) 55%, #2f7ede 100%);
  color: #fff; padding: 64px 0; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%;
  right: -120px; top: -200px; background: rgba(255,255,255,0.06);
}
.page-hero h2 { font-size: 32px; letter-spacing: 2px; margin-bottom: 8px; position: relative; z-index: 2; }
.page-hero .crumbs { font-size: 13.5px; color: rgba(255,255,255,0.75); position: relative; z-index: 2; }
.page-hero .crumbs a:hover { color: #fff; }

/* ---------- 新闻 ---------- */
.news-layout { display: grid; grid-template-columns: 2.4fr 1fr; gap: 34px; align-items: start; }
.news-list li {
  display: flex; gap: 20px; padding: 22px 4px; border-bottom: 1px dashed var(--border); transition: 0.25s;
}
.news-list li:hover .news-info h4 { color: var(--primary); }
.news-date {
  flex-shrink: 0; width: 76px; height: 76px; border-radius: 10px; text-align: center;
  background: var(--bg); color: var(--primary-dark); display: flex; flex-direction: column; justify-content: center;
}
.news-date b { font-size: 26px; line-height: 1.1; }
.news-date span { font-size: 12px; color: var(--light); }
.news-info h4 { font-size: 17px; color: var(--dark); margin-bottom: 8px; transition: 0.25s; }
.news-info p { font-size: 13.5px; color: var(--light); margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tag { display: inline-block; font-size: 12px; padding: 2px 12px; border-radius: 999px; background: #eaf2fe; color: var(--primary); margin-right: 8px; }
.side-box { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 22px; }
.side-box h5 { font-size: 16px; color: var(--dark); margin-bottom: 16px; padding-left: 11px; border-left: 3px solid var(--primary); }
.side-box li { padding: 9px 0; border-bottom: 1px dashed var(--border); font-size: 13.5px; display: flex; justify-content: space-between; gap: 10px; }
.side-box li:last-child { border-bottom: none; }
.side-box li a:hover { color: var(--primary); }
.side-box li span { color: #c3cad6; font-size: 12px; flex-shrink: 0; }
.hot-line { display: flex; align-items: center; gap: 12px; background: linear-gradient(135deg, #eaf2fe, #d7e6ff); border-radius: 10px; padding: 16px; }
.hot-line .ico { width: 44px; height: 44px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; }
.hot-line .ico svg { width: 20px; height: 20px; }
.hot-line b { color: var(--primary-dark); font-size: 17px; }
.hot-line small { color: var(--light); display: block; }

/* ---------- 解决方案 / 案例 ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sol-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: 0.3s; }
.sol-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.sol-thumb { height: 170px; position: relative; display: flex; align-items: center; justify-content: center; color: #fff; }
.sol-thumb svg { width: 56px; height: 56px; opacity: 0.95; }
.sol-thumb.t1 { background: linear-gradient(135deg, #1c6ee8, #57a0ff); }
.sol-thumb.t2 { background: linear-gradient(135deg, #0e4fae, #3f8ef5); }
.sol-thumb.t3 { background: linear-gradient(135deg, #10233f, #2f7ede); }
.sol-thumb.t4 { background: linear-gradient(135deg, #0b3c86, #2668c9); }
.sol-body { padding: 24px 22px; }
.sol-body h4 { font-size: 18px; color: var(--dark); margin-bottom: 8px; }
.sol-body p { font-size: 13.5px; margin-bottom: 12px; }
.sol-body .feat { display: flex; flex-wrap: wrap; gap: 8px; }
.sol-body .feat i { font-style: normal; font-size: 12px; color: var(--primary-dark); background: #eef4fe; padding: 3px 10px; border-radius: 4px; }
.case-filter { display: flex; justify-content: center; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; }
.case-filter button {
  padding: 9px 26px; border-radius: 999px; background: var(--white); border: 1px solid var(--border);
  color: var(--text); cursor: pointer; transition: 0.25s; font-size: 14px;
}
.case-filter button.on, .case-filter button:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.case-card { background: var(--white); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: 0.3s; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-thumb { height: 200px; position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #fff; gap: 8px; }
.case-thumb svg { width: 46px; height: 46px; opacity: 0.9; }
.case-thumb b { font-size: 19px; letter-spacing: 2px; }
.case-body { padding: 18px 20px; display: flex; justify-content: space-between; align-items: center; }
.case-body h4 { font-size: 16px; color: var(--dark); }
.case-body .cat { font-size: 12px; color: var(--primary); background: #eef4fe; border-radius: 4px; padding: 3px 10px; flex-shrink: 0; }
.hide { display: none !important; }

/* ---------- 流程 / FAQ / 时间线 ---------- */
.flow-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.flow-step { text-align: center; position: relative; padding: 0 6px; }
.flow-step .n {
  width: 64px; height: 64px; margin: 0 auto 14px; border-radius: 50%; position: relative; z-index: 2;
  background: linear-gradient(135deg, var(--primary), #57a0ff); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 800;
  box-shadow: 0 8px 18px rgba(28,110,232,0.3);
}
.flow-step::after {
  content: ""; position: absolute; top: 32px; left: calc(50% + 36px); width: calc(100% - 72px);
  height: 2px; background: repeating-linear-gradient(90deg, #bcd4f7 0 8px, transparent 8px 16px);
}
.flow-step:last-child::after { display: none; }
.flow-step h4 { font-size: 15.5px; color: var(--dark); margin-bottom: 5px; }
.flow-step p { font-size: 12px; color: var(--light); }
.faq-item { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; padding: 17px 20px; font-size: 15.5px; font-weight: bold; color: var(--dark);
  background: var(--white); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 14px;
}
.faq-q .sign { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: #eef4fe; color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 17px; transition: 0.3s; font-weight: normal; }
.faq-item.open .sign { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; font-size: 14px; color: var(--light); }
.faq-a div { padding: 0 20px 18px; }
.faq-item.open .faq-a { max-height: 260px; }

.timeline { position: relative; max-width: 860px; margin: 0 auto; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 6px; bottom: 6px; width: 2px; background: #d7e2f5; transform: translateX(-50%); }
.tl-item { position: relative; width: 50%; padding: 0 40px 44px 0; }
.tl-item:nth-child(even) { margin-left: 50%; padding: 0 0 44px 40px; }
.tl-item::after {
  content: ""; position: absolute; top: 6px; right: -8px; width: 15px; height: 15px; border-radius: 50%;
  background: #fff; border: 3.5px solid var(--primary); z-index: 2;
}
.tl-item:nth-child(even)::after { right: auto; left: -8.5px; }
.tl-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; transition: 0.3s; }
.tl-card:hover { box-shadow: var(--shadow-hover); }
.tl-card b { display: block; color: var(--primary); font-size: 18px; margin-bottom: 6px; font-family: Georgia, serif; }
.tl-card h4 { font-size: 16px; color: var(--dark); margin-bottom: 5px; }
.tl-card p { font-size: 13px; color: var(--light); }

/* ---------- 关于 / 联系 ---------- */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 46px; align-items: center; }
.about-txt h3 { font-size: 26px; color: var(--dark); margin-bottom: 6px; }
.about-txt .sub { color: var(--primary); font-size: 14px; letter-spacing: 1px; margin-bottom: 18px; }
.about-txt p { margin-bottom: 14px; text-align: justify; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.stat { background: var(--bg); border-radius: var(--radius); text-align: center; padding: 18px 8px; }
.stat b { font-size: 30px; color: var(--primary); font-family: Georgia, serif; }
.stat span { display: block; font-size: 12.5px; color: var(--light); margin-top: 2px; }
.about-art {
  height: 380px; border-radius: 14px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0b3c86, #2f7ede); display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-hover);
}
.culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.culture-card { text-align: center; padding: 40px 26px; border-radius: var(--radius); background: var(--white); border: 1px solid var(--border); transition: 0.3s; }
.culture-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.culture-card h4 { font-size: 19px; color: var(--dark); margin-bottom: 10px; }
.culture-card p { font-size: 13.5px; color: var(--light); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 50px; }
.contact-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); text-align: center; padding: 34px 20px; transition: 0.3s; }
.contact-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.contact-card .ico { width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 50%; background: #eaf2fe; color: var(--primary); display: flex; align-items: center; justify-content: center; }
.contact-card .ico svg { width: 26px; height: 26px; }
.contact-card h4 { font-size: 17px; color: var(--dark); margin-bottom: 8px; }
.contact-card p { font-size: 14px; }
.form-wrap { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; color: var(--dark); margin-bottom: 8px; font-weight: bold; }
.form-group label i { color: #f56c6c; font-style: normal; margin-left: 3px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 6px;
  background: #fbfcfe; transition: 0.25s; font-size: 14px;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(28,110,232,0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-tip { font-size: 12.5px; color: var(--light); margin-top: 14px; text-align: center; }
.form-ok {
  display: none; text-align: center; padding: 34px 10px;
}
.form-ok .ok-ico { width: 66px; height: 66px; margin: 0 auto 16px; border-radius: 50%; background: #e8f8ee; color: #35b26a; display: flex; align-items: center; justify-content: center; }
.form-ok .ok-ico svg { width: 32px; height: 32px; }
.form-ok h4 { color: var(--dark); font-size: 19px; margin-bottom: 8px; }
.form-ok p { color: var(--light); font-size: 14px; }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed; right: 26px; bottom: 34px; width: 46px; height: 46px; border-radius: 12px;
  background: var(--white); border: 1px solid var(--border); box-shadow: var(--shadow);
  color: var(--primary); cursor: pointer; display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: 0.3s; z-index: 800;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary); color: #fff; }
.back-top svg { width: 20px; height: 20px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .client-grid { grid-template-columns: repeat(4, 1fr); }
  .flow-grid { grid-template-columns: repeat(3, 1fr); gap: 30px 14px; }
  .flow-step::after { display: none; }
  .slide-art { display: none; }
  .news-layout { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .topbar .slogan { display: none; }
  .nav-toggle { display: flex; }
  .nav {
    position: fixed; top: 110px; left: 0; right: 0; background: #fff; flex-direction: column;
    padding: 12px 4%; gap: 2px; box-shadow: 0 12px 24px rgba(15,45,100,0.12); border-top: 1px solid var(--border);
    transform: translateY(-16px); opacity: 0; visibility: hidden; transition: 0.3s; align-items: stretch; z-index: 890;
  }
  .nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav > li > a { padding: 12px 14px; }
  .nav > li > a.active::after { display: none; }
  .intro-grid, .svc-grid, .adv-grid, .why-grid, .sol-grid, .culture-grid, .contact-grid, .about-grid { grid-template-columns: 1fr; }
  .banner { height: 480px; }
  .slide-txt h2 { font-size: 30px; }
  .slide-txt p { font-size: 14px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .timeline::before, .tl-item::after { display: none; }
  .tl-item, .tl-item:nth-child(even) { width: 100%; margin: 0; padding: 0 0 26px; }
  .form-row { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  .client-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .banner { height: 430px; }
  .slide-txt h2 { font-size: 24px; }
  .footer-top { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .section { padding: 54px 0; }
  .sec-head h3 { font-size: 24px; }
  .form-wrap { padding: 26px 18px; }
  .banner-arrow { display: none; }
}