/* ============================================
   中贯科技官网 - 样式表
   风格:工业蓝,浅色页面 + 深色 Hero
   ============================================ */

:root {
  --blue: #1d4ed8;
  --blue-dark: #1e40af;
  --blue-deep: #0b2545;
  --blue-mid: #13315c;
  --cyan: #38bdf8;
  --ink: #0f172a;
  --ink-2: #334155;
  --ink-3: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --bg-card: #ffffff;
  --green: #059669;
  --amber: #d97706;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 4px 16px rgba(15, 23, 42, .06);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, .12);
  --maxw: 1160px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }

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

section { padding: 72px 0; }

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.section-sub { color: var(--ink-3); max-width: 640px; margin-bottom: 40px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 34px; width: auto; }
.brand .brand-name { font-size: 17px; font-weight: 700; color: var(--ink); letter-spacing: 1px; }
.brand .brand-en { font-size: 11px; color: var(--ink-3); letter-spacing: .5px; }

.nav-links { display: flex; align-items: center; gap: 26px; list-style: none; }
.nav-links a { color: var(--ink-2); font-size: 15px; font-weight: 500; }
.nav-links a:hover, .nav-links a.active { color: var(--blue); }

.lang-switch {
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
  color: var(--ink-3);
}
.lang-switch:hover { border-color: var(--blue); color: var(--blue); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform .15s ease, box-shadow .15s ease;
}

.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, .45); }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); color: #fff; }

.btn-outline { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }

.btn-sm { padding: 8px 18px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  color: #fff;
  padding: 118px 0 96px;
  background: var(--blue-deep) url("../img/hero-bg.png") center/cover no-repeat;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 37, 69, .55) 0%, rgba(11, 37, 69, .25) 45%, rgba(11, 37, 69, .75) 100%);
}

.hero .wrap { position: relative; z-index: 1; }

.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }

.hero-badge {
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, .5);
  color: var(--cyan);
  background: rgba(56, 189, 248, .08);
}

.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 1px;
  max-width: 760px;
  margin-bottom: 18px;
}

.hero h1 .hl { color: var(--cyan); }

.hero-slogan {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--cyan);
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  color: rgba(226, 232, 240, .92);
  max-width: 640px;
  margin-bottom: 34px;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }

.hero-note { margin-top: 22px; font-size: 13px; color: rgba(148, 163, 184, .9); }

/* ---------- 报价承诺(报价页) ---------- */
.trust-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--bg-soft);
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 14px;
  color: var(--ink-2);
  margin-top: 14px;
}

.trust-note strong { color: var(--blue); }

/* ---------- 硬数字条 ---------- */
.stats {
  background: var(--blue-deep);
  color: #fff;
  padding: 34px 0;
  border-top: 1px solid rgba(56, 189, 248, .2);
}

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }

.stat .num { font-size: 34px; font-weight: 800; color: var(--cyan); letter-spacing: 1px; }
.stat .num small { font-size: 18px; font-weight: 600; }
.stat .label { font-size: 14px; color: rgba(203, 213, 225, .85); margin-top: 2px; }
.stat .pending { font-size: 11px; color: var(--amber); margin-top: 2px; }

/* ---------- 服务流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: 8px; }

.flow-step {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 26px 18px;
  text-align: center;
}

.flow-step:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.flow-step:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.flow-step + .flow-step { border-left: none; }

.flow-step .idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 12px;
}

.flow-step h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.flow-step p { font-size: 13px; color: var(--ink-3); }

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.split.reverse > .split-text { order: 2; }

.split-text h2 { font-size: 28px; font-weight: 700; margin-bottom: 14px; }
.split-text > p { color: var(--ink-2); margin-bottom: 18px; }

.check-list { list-style: none; margin: 18px 0 26px; }
.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  color: var(--ink-2);
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 7px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--blue);
  -webkit-mask: none;
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 4.5px; top: 11.5px;
  width: 7px; height: 4px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
}

.split-img { position: relative; }
.split-img img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.split-img .caption {
  position: absolute;
  left: 14px; bottom: 14px;
  background: rgba(11, 37, 69, .82);
  color: #fff;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 8px;
}

/* ---------- 设备网格 ---------- */
.equip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 44px; }

.equip-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform .15s ease, box-shadow .15s ease;
}

.equip-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

.equip-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; color: var(--ink); }
.equip-card p { font-size: 13px; color: var(--ink-3); }

.equip-card .brand-mark {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.photo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

.photo-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.photo-card img { height: 200px; width: 100%; object-fit: cover; transition: transform .3s ease; }
.photo-card:hover img { transform: scale(1.04); }
.photo-card .tag {
  position: absolute;
  left: 10px; bottom: 10px;
  background: rgba(11, 37, 69, .85);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 6px;
}

/* ---------- 行业案例 ---------- */
.cases { background: var(--bg-soft); }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.case-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.case-card img { height: 210px; width: 100%; object-fit: cover; }

.case-body { padding: 22px 24px 26px; }
.case-body .industry {
  font-size: 12px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.case-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.case-body p { font-size: 14px; color: var(--ink-3); }

.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.case-tags span {
  font-size: 12px;
  color: var(--ink-2);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 12px;
}

/* ---------- 案例长条卡(图左文右,窄高) ---------- */
.case-strip {
  display: flex;
  align-items: stretch;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-top: 20px;
}

.case-strip-img { flex: 0 0 280px; min-height: 150px; }
.case-strip-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

.case-strip-body {
  padding: 18px 26px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  min-width: 0;
}

.case-strip-title { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.case-strip-title .industry { font-size: 12px; font-weight: 700; color: var(--blue); letter-spacing: 1px; }
.case-strip-title h3 { font-size: 17px; font-weight: 700; }

.case-strip-meta { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 13px; color: var(--ink-2); }
.case-strip-meta b { color: var(--ink); font-weight: 600; }

.case-strip .result { font-size: 13.5px; color: var(--green); font-weight: 600; }
.case-strip .note { font-size: 12.5px; color: var(--ink-3); }

@media (max-width: 960px) {
  .case-strip { flex-direction: column; }
  .case-strip-img { flex: none; height: 180px; }
  .case-strip-body { padding: 18px 20px 20px; }
}

/* ---------- 报价 CTA ---------- */
.quote-cta {
  background: var(--blue-deep) url("../img/hero-bg.png") center/cover no-repeat;
  position: relative;
  color: #fff;
  padding: 84px 0;
}

.quote-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(11, 37, 69, .8);
}

.quote-cta .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }

.quote-cta h2 { font-size: 30px; font-weight: 800; margin-bottom: 14px; }
.quote-cta p { color: rgba(203, 213, 225, .9); margin-bottom: 24px; max-width: 520px; }

.privacy-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(5, 150, 105, .14);
  border: 1px solid rgba(52, 211, 153, .4);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 13px;
  color: #a7f3d0;
  max-width: 520px;
}

.privacy-note strong { color: #6ee7b7; }

.quote-steps { background: rgba(255, 255, 255, .06); border: 1px solid rgba(148, 163, 184, .25); border-radius: var(--radius); padding: 26px 28px; }

.quote-steps ol { list-style: none; counter-reset: q; }
.quote-steps li {
  counter-increment: q;
  position: relative;
  padding-left: 44px;
  margin-bottom: 18px;
  font-size: 15px;
  color: rgba(226, 232, 240, .95);
}
.quote-steps li:last-child { margin-bottom: 0; }
.quote-steps li::before {
  content: counter(q);
  position: absolute;
  left: 0; top: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--cyan);
  color: var(--blue-deep);
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.quote-steps li small { display: block; font-size: 12.5px; color: rgba(148, 163, 184, .9); margin-top: 2px; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #081c33;
  color: rgba(203, 213, 225, .85);
  padding: 56px 0 0;
}

.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }

.footer-grid h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; letter-spacing: 1px; }
.footer-grid p, .footer-grid li { font-size: 14px; margin-bottom: 8px; color: rgba(148, 163, 184, .95); }
.footer-grid ul { list-style: none; }
.footer-grid a { color: rgba(203, 213, 225, .9); }
.footer-grid a:hover { color: var(--cyan); }

.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand img { height: 30px; }
.footer-brand span { color: #fff; font-weight: 700; font-size: 16px; }

.qr-box {
  width: 118px; height: 118px;
  border: 1px dashed rgba(148, 163, 184, .5);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 12px;
  color: rgba(148, 163, 184, .8);
  padding: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, .15);
  padding: 18px 0;
  font-size: 13px;
  color: rgba(100, 116, 139, .9);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 报价页 ---------- */
.page-hero {
  background: var(--blue-deep) url("../img/hero-bg.png") center/cover no-repeat;
  position: relative;
  color: #fff;
  padding: 72px 0;
}
.page-hero::after { content: ""; position: absolute; inset: 0; background: rgba(11, 37, 69, .72); }
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero h1 { font-size: 34px; font-weight: 800; margin-bottom: 10px; }
.page-hero p { color: rgba(203, 213, 225, .92); max-width: 640px; }

.quote-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 34px 36px;
  max-width: 760px;
  margin: 0 auto;
}

/* ---------- 报价结果渲染 ---------- */
.quote-result { text-align: left; }
.qr-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.qr-price { font-size: 26px; font-weight: 800; color: var(--blue); }
.qr-price small { font-size: 14px; font-weight: 600; color: var(--ink-3); margin-left: 6px; }
.qr-sub { font-size: 13px; color: var(--ink-3); }
.qr-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 12px 0 14px; }
.qr-cell { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; }
.qr-cell .k { font-size: 12px; color: var(--ink-3); }
.qr-cell .v { font-size: 17px; font-weight: 700; color: var(--ink); margin-top: 2px; }
.qr-table { width: 100%; border-collapse: collapse; font-size: 13px; margin: 6px 0 4px; }
.qr-table th, .qr-table td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); }
.qr-table th { color: var(--ink-3); font-weight: 600; font-size: 12px; }
.qr-flags { margin-top: 12px; font-size: 13px; color: var(--amber); background: #fff7ed; border: 1px solid #fed7aa; border-radius: 8px; padding: 10px 14px; }
.qr-ok { font-size: 13px; color: var(--green); margin-top: 10px; }
@media (max-width: 560px) { .qr-grid { grid-template-columns: 1fr 1fr; } }

.step-bar { display: flex; gap: 0; margin-bottom: 34px; }
.step-bar .s {
  flex: 1;
  text-align: center;
  font-size: 14px;
  color: var(--ink-3);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line);
  position: relative;
}
.step-bar .s.on { color: var(--blue); font-weight: 600; border-color: var(--blue); }

.upload-zone {
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  padding: 44px 24px;
  text-align: center;
  color: var(--ink-3);
  transition: border-color .15s ease, background .15s ease;
  cursor: pointer;
}
.upload-zone:hover { border-color: var(--blue); background: var(--bg-soft); }
.upload-zone .big { font-size: 17px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.upload-zone .small { font-size: 13px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-item { display: flex; flex-direction: column; gap: 6px; }
.form-item.full { grid-column: 1 / -1; }
.form-item label { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.form-item label .req { color: #dc2626; }
.form-item input, .form-item textarea, .form-item select {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
}
.form-item input:focus, .form-item textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(29, 78, 216, .12); }

.form-note { font-size: 12.5px; color: var(--ink-3); margin-top: 14px; }

.result-placeholder {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
}

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.contact-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 16px; }
.contact-row { display: flex; gap: 14px; margin-bottom: 16px; font-size: 15px; }
.contact-row .k { color: var(--ink-3); min-width: 76px; }
.contact-row .v { color: var(--ink); font-weight: 500; }

.contact-card img.map { border-radius: 8px; margin-top: 10px; }

.promise-bar {
  background: var(--bg-soft);
  border-left: 4px solid var(--green);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  font-size: 14px;
  color: var(--ink-2);
  margin-top: 8px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .stats-grid, .equip-grid, .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .flow { grid-template-columns: 1fr 1fr; }
  .flow-step { border: 1px solid var(--line) !important; border-radius: var(--radius) !important; }
  .flow { gap: 12px; }
  .split, .quote-cta .wrap, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .split.reverse > .split-text { order: 0; }
  .nav-links { display: none; }
  .hero h1 { font-size: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .stats-grid, .equip-grid, .photo-grid, .case-grid, .flow, .form-grid { grid-template-columns: 1fr; }
  .hero { padding: 84px 0 72px; }
  .section-title { font-size: 24px; }
  section { padding: 52px 0; }
}