/* ================================================
   无锡乐情信息科技有限公司 官网样式 v2
   风格：白色商务底 + 深藏蓝主色 + 金色徽章 + 斜切版面
   ================================================ */
:root {
  --navy: #16336e;
  --navy-2: #0f2550;
  --blue: #2563c2;
  --blue-soft: #eaf1fb;
  --gold: #c9a227;
  --bg: #f6f8fc;
  --panel: #ffffff;
  --line: #dfe7f3;
  --text: #1d2d4a;
  --muted: #5f7089;
  --radius: 10px;
  --shadow: 0 12px 34px rgba(22, 51, 110, 0.10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航（白底） ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 24px;
  height: 70px; display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 12px; }
.brand-icon { display: flex; flex-shrink: 0; }
.brand-icon svg { width: 44px; height: 44px; display: block; }
.logo-text { display: flex; flex-direction: column; }
.logo-cn {
  font-size: 21px; font-weight: 800; letter-spacing: 1.5px; color: var(--navy);
  line-height: 1.2; white-space: nowrap;
}
.logo-cn sup { font-size: 10px; color: var(--gold); font-weight: 700; }
.logo-en {
  font-size: 10.5px; font-weight: 600; letter-spacing: 3.5px; color: var(--muted);
  line-height: 1; margin-top: 3px; white-space: nowrap;
}
.logo-mark {
  width: 38px; height: 38px; border-radius: 8px; background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800; flex-shrink: 0;
}
.nav-menu { display: flex; gap: 6px; align-items: center; }
.nav-menu a {
  padding: 8px 18px; font-size: 15px; color: var(--text); font-weight: 500;
  border-bottom: 2px solid transparent; transition: all .25s;
}
.nav-menu a:hover { color: var(--blue); }
.nav-menu a.active { color: var(--blue); border-bottom-color: var(--gold); }
.nav-tel {
  font-size: 14px; color: #fff; background: var(--navy);
  padding: 9px 22px; border-radius: 4px; font-weight: 600; transition: all .25s;
}
.nav-tel:hover { background: var(--blue); }
.nav-toggle { display: none; background: none; border: none; color: var(--navy); font-size: 26px; cursor: pointer; }

/* ---------- 内页 Hero（浅色） ---------- */
.page-hero {
  padding: 165px 0 62px;
  background: linear-gradient(180deg, #ffffff, #e9eff9);
  border-bottom: 1px solid var(--line);
}
.page-hero h1 { font-size: 40px; color: var(--navy); letter-spacing: 2px; margin-bottom: 10px; font-weight: 800; }
.page-hero h1::after { content: ""; display: block; width: 46px; height: 4px; background: var(--gold); border-radius: 2px; margin-top: 14px; }
.page-hero p { color: var(--muted); max-width: 640px; margin-top: 10px; }
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a:hover { color: var(--blue); }

/* ---------- 首页 Hero（左文右图斜切） ---------- */
.hero { background: linear-gradient(180deg, #ffffff 55%, #e9eff9); overflow: hidden; }
.hero-split {
  display: grid; grid-template-columns: 1.02fr .98fr; gap: 30px;
  align-items: center; min-height: 620px; padding: 150px 24px 60px;
}
.hero-flag { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.hero-flag .shield {
  font-size: 30px; width: 52px; height: 52px; border-radius: 8px;
  background: #fdf6e3; border: 1px solid rgba(201, 162, 39, .4);
  display: flex; align-items: center; justify-content: center;
}
.hero-flag .chips { display: flex; gap: 8px; }
.hero-flag .chips i { width: 44px; height: 12px; border-radius: 3px; background: var(--navy); position: relative; }
.hero-flag .chips i::after { content: ""; position: absolute; left: 8px; right: 8px; top: 5px; height: 2px; background: repeating-linear-gradient(90deg, #fff 0 6px, transparent 6px 10px); }
.hero h1 {
  font-size: 46px; line-height: 1.35; font-weight: 800; color: var(--navy);
  letter-spacing: 1px; margin-bottom: 22px;
}
.hero h1 em { font-style: normal; color: var(--blue); }
.hero .sub { color: var(--muted); font-size: 17px; margin-bottom: 16px; }
.hero .deco { width: 250px; height: 2px; background: repeating-linear-gradient(90deg, #c6d3ea 0 22px, transparent 22px 34px); margin-bottom: 34px; }
.btn-row { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 34px; border-radius: 4px; font-size: 16px; font-weight: 600;
  transition: all .25s; cursor: pointer; border: none;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--blue); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(37, 99, 194, .3); }
.btn-ghost { background: transparent; color: var(--navy); border: 1px solid #c6d3ea; }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn-text { color: var(--blue); font-weight: 600; display: inline-flex; align-items: center; gap: 8px; }
.btn-text::after { content: "→"; transition: transform .25s; }
.btn-text:hover::after { transform: translateX(5px); }
.hero-pic { position: relative; }
.hero-pic img {
  width: 100%; height: 560px; object-fit: cover;
  clip-path: polygon(16% 0, 100% 0, 100% 100%, 0 100%);
  box-shadow: var(--shadow);
}

/* ---------- 资质徽章条（藏蓝斜切） ---------- */
.cert-strip {
  background: linear-gradient(90deg, var(--navy-2), var(--navy));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), calc(100% - 90px) 100%, 0 100%);
  padding: 34px 0 44px;
}
.cert-inner { display: flex; justify-content: space-between; flex-wrap: wrap; }
.cert-item {
  display: flex; align-items: center; gap: 12px; color: #fff;
  padding: 6px 26px; border-right: 1px solid rgba(255, 255, 255, 0.16); font-size: 15px; font-weight: 500;
}
.cert-item:last-child { border-right: none; }
.cert-item .ico { font-size: 24px; filter: sepia(1) saturate(3) hue-rotate(-12deg) brightness(1.15); }
.cert-item small { display: block; color: #9db4dd; font-size: 12px; }

/* ---------- 数据条（蓝色圆形图标） ---------- */
.stats-band { padding: 64px 0 20px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stat-cell {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; display: flex; align-items: center; gap: 18px;
  box-shadow: var(--shadow);
}
.stat-ico {
  width: 54px; height: 54px; border-radius: 50%; background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 23px; flex-shrink: 0;
}
.stat-num { font-size: 34px; font-weight: 800; color: var(--navy); line-height: 1.2; }
.stat-num span { font-size: 18px; color: var(--blue); }
.stat-label { color: var(--muted); font-size: 13.5px; }

/* ---------- 通用区块 ---------- */
.section { padding: 88px 0; }
.section-alt { background: #edf2fa; }
.section-head { text-align: center; margin-bottom: 54px; }
.section-head .en { color: var(--blue); font-size: 14px; letter-spacing: 4px; text-transform: uppercase; font-weight: 600; }
.section-head h2 { font-size: 36px; color: var(--navy); margin: 8px 0 14px; letter-spacing: 1px; font-weight: 800; }
.section-head h2::after { content: ""; display: block; width: 46px; height: 4px; background: var(--gold); border-radius: 2px; margin: 14px auto 0; }
.section-head p { color: var(--muted); max-width: 620px; margin: 14px auto 0; }

/* ---------- 业务卡片（右下箭头角标） ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.biz-card {
  position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .3s; display: block;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #c6d3ea; }
.biz-card .thumb { height: 210px; overflow: hidden; }
.biz-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.biz-card:hover .thumb img { transform: scale(1.06); }
.biz-card .body { padding: 26px 28px 64px; }
.biz-card h3 { font-size: 21px; margin-bottom: 10px; color: var(--navy); }
.biz-card p { color: var(--muted); font-size: 14.5px; }
.biz-card::after {
  content: "→"; position: absolute; right: 22px; bottom: 18px;
  width: 44px; height: 44px; border-radius: 6px; background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 20px; transition: all .3s;
}
.biz-card:hover::after { background: var(--blue); transform: translateX(4px); }

/* 业务详情页大块 */
.biz-detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: 50px; align-items: center; margin-bottom: 84px; }
.biz-detail:nth-child(even) .biz-photo { order: 2; }
.biz-photo { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); }
.biz-photo img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }
.biz-text .no { font-size: 15px; color: var(--gold); letter-spacing: 3px; font-weight: 700; }
.biz-text h3 { font-size: 30px; margin: 8px 0 18px; color: var(--navy); }
.biz-text > p { color: var(--muted); margin-bottom: 18px; }
.check-list li { padding: 7px 0 7px 32px; position: relative; color: #3c4f70; font-size: 15px; }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 8px;
  width: 22px; height: 22px; border-radius: 4px; background: var(--blue-soft);
  color: var(--blue); font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .3s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.case-card .thumb { height: 190px; position: relative; overflow: hidden; }
.case-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .thumb img { transform: scale(1.06); }
.case-card .year {
  position: absolute; top: 14px; right: 14px; background: var(--navy);
  color: #fff; padding: 3px 14px; border-radius: 3px; font-size: 13px;
}
.case-card .body { padding: 22px 24px; }
.case-card h3 { font-size: 17.5px; margin-bottom: 8px; line-height: 1.5; color: var(--navy); }
.case-card .client { color: var(--gold); font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.case-card p { color: var(--muted); font-size: 14px; }
.case-tag {
  display: inline-block; margin-top: 12px; font-size: 12.5px; color: var(--blue);
  background: var(--blue-soft); border-radius: 4px; padding: 2px 12px;
}

/* ---------- 服务流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.flow-step { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 18px; text-align: center; transition: all .3s; }
.flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c6d3ea; }
.flow-step .icon {
  width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%;
  background: var(--blue-soft); display: flex; align-items: center; justify-content: center; font-size: 26px;
}
.flow-step h4 { font-size: 16.5px; margin-bottom: 6px; color: var(--navy); }
.flow-step h4::before { counter-increment: step; content: "0" counter(step); color: var(--gold); font-size: 13px; letter-spacing: 1px; display: block; margin-bottom: 8px; font-weight: 700; }
.flow-step p { color: var(--muted); font-size: 13px; }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px; transition: all .3s; border-top: 3px solid transparent; }
.adv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-top-color: var(--gold); }
.adv-card .icon {
  width: 52px; height: 52px; border-radius: 8px; background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 23px; margin-bottom: 18px;
}
.adv-card h4 { font-size: 17px; margin-bottom: 8px; color: var(--navy); }
.adv-card p { color: var(--muted); font-size: 14px; }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-intro .biz-photo img { aspect-ratio: 4/3; }
.about-intro h2 { font-size: 32px; margin-bottom: 18px; color: var(--navy); }
.about-intro h2::after { content: ""; display: block; width: 46px; height: 4px; background: var(--gold); border-radius: 2px; margin-top: 14px; }
.about-intro p { color: var(--muted); margin-bottom: 14px; }
.about-intro b { color: var(--navy); }
.info-table { margin-top: 10px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--panel); }
.info-table div { display: flex; border-bottom: 1px solid var(--line); }
.info-table div:last-child { border-bottom: none; }
.info-table b { width: 150px; flex-shrink: 0; padding: 12px 18px; background: var(--blue-soft); color: var(--navy); font-weight: 600; font-size: 14px; }
.info-table span { padding: 12px 18px; font-size: 14px; color: #3c4f70; }

/* 资质荣誉 */
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.honor-card { text-align: center; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 20px; }
.honor-card .num { font-size: 40px; font-weight: 800; color: var(--navy); }
.honor-card .num span { color: var(--gold); }
.honor-card h4 { margin: 6px 0 4px; font-size: 16px; color: var(--navy); }
.honor-card p { color: var(--muted); font-size: 13px; }

/* 时间轴 */
.timeline { position: relative; max-width: 780px; margin: 0 auto; padding-left: 32px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: #c6d3ea; }
.tl-item { position: relative; padding: 0 0 40px 28px; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--navy);
}
.tl-item .year { color: var(--navy); font-weight: 800; font-size: 20px; margin-bottom: 6px; }
.tl-item .year::after { content: ""; display: inline-block; width: 26px; height: 3px; background: var(--gold); margin-left: 12px; vertical-align: middle; border-radius: 2px; }
.tl-item p { color: var(--muted); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: start; }
.contact-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); }
.contact-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-item:last-child { border-bottom: none; }
.contact-item .icon { width: 44px; height: 44px; border-radius: 8px; background: var(--navy); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 19px; flex-shrink: 0; }
.contact-item b { display: block; font-size: 15px; margin-bottom: 2px; color: var(--navy); }
.contact-item span { color: var(--muted); font-size: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.form-group input, .form-group textarea {
  width: 100%; background: #fff; border: 1px solid #c6d3ea; border-radius: 4px;
  padding: 12px 16px; color: var(--text); font-size: 15px; font-family: inherit; transition: border .25s;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37, 99, 194, .12); }
.map-box { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); margin-top: 40px; }
.map-inner {
  height: 300px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  background:
    radial-gradient(500px 200px at 50% 0%, rgba(37, 99, 194, .08), transparent),
    repeating-linear-gradient(0deg, transparent 0 39px, #dfe7f3 39px 40px),
    repeating-linear-gradient(90deg, #f2f6fc 0 39px, #dfe7f3 39px 40px);
  color: var(--muted);
}
.map-inner .pin { font-size: 38px; animation: bounce 1.8s infinite; }
.map-inner b { color: var(--navy); }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- CTA ---------- */
.cta-band {
  text-align: center; padding: 76px 0;
  background: linear-gradient(115deg, var(--navy-2) 60%, var(--blue));
  clip-path: polygon(0 28px, 70px 0, 100% 0, 100% calc(100% - 28px), calc(100% - 70px) 100%, 0 100%);
}
.cta-band h2 { font-size: 32px; margin-bottom: 12px; color: #fff; }
.cta-band p { color: #b9c9e8; margin-bottom: 30px; }
.cta-band .btn-primary { background: #fff; color: var(--navy); }
.cta-band .btn-primary:hover { background: var(--gold); color: #fff; }

/* ---------- 页脚（藏蓝） ---------- */
.site-footer { background: var(--navy-2); padding: 60px 0 0; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
.footer-grid h4 { font-size: 16px; margin-bottom: 18px; color: #fff; }
.footer-grid h4::after { content: ""; display: block; width: 22px; height: 3px; background: var(--gold); margin-top: 8px; border-radius: 2px; }
.footer-grid a, .footer-grid p { display: block; color: #9db4dd; font-size: 14px; padding: 4px 0; }
.footer-grid a:hover { color: #fff; }
.footer-brand .logo { color: #fff; }
.footer-brand .logo-cn { color: #fff; }
.footer-brand .logo-en { color: #9db4dd; }
.footer-brand p { color: #9db4dd; font-size: 14px; margin-top: 14px; max-width: 320px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); padding: 20px 0; text-align: center; color: #7f97c6; font-size: 13px; }
.footer-bottom a { color: #9db4dd; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero h1 { font-size: 36px; }
  .hero-split { grid-template-columns: 1fr; padding-top: 120px; min-height: 0; gap: 44px; }
  .hero-pic img { height: 380px; }
  .cert-inner { justify-content: center; gap: 14px; }
  .cert-item { border-right: none; }
  .biz-grid, .case-grid, .adv-grid, .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-detail, .about-intro, .contact-grid { grid-template-columns: 1fr; }
  .biz-detail:nth-child(even) .biz-photo { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-tel { display: none; }
  .nav-toggle { display: block; }
  .nav-menu {
    display: none; position: absolute; top: 70px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; background: #fff; padding: 16px 24px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { border-bottom: none; }
}
@media (max-width: 620px) {
  .hero h1 { font-size: 29px; }
  .page-hero h1 { font-size: 30px; }
  .section-head h2 { font-size: 27px; }
  .biz-grid, .case-grid, .adv-grid, .honor-grid, .flow, .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 58px 0; }
  .info-table b { width: 110px; }
}