:root {
  --brand: #1890ff;
  --brand-hover: #40a9ff;
  --brand-active: #096dd9;
  --brand-soft: #e8f4ff;
  --brand-softer: #f2f8ff;
  --ink: #1d2129;
  --body: #42464e;
  --muted: #737a87;
  --line: #e5e6eb;
  --card: #ffffff;
  --ok: #00b42a;
  --warn: #ff7d00;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 8px 24px rgba(24, 144, 255, 0.08);
  --max: 1280px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.7;
  color: var(--body);
  background:
    linear-gradient(160deg, #f2f8ff 0%, #ffffff 42%, #f7fbff 100%) fixed;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }

.wrap { width: 1280px; max-width: calc(100% - 40px); margin: 0 auto; }
.header {
  position: sticky; top: 0; z-index: 20;
  min-height: 64px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header .wrap, .header-bar {
  height: 64px; display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: none; }
.brand img { width: 32px; height: 32px; object-fit: contain; }
.brand b { color: var(--ink); font-size: 16px; }
.brand span { color: var(--muted); font-size: 12px; padding-left: 10px; border-left: 1px solid var(--line); }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
  padding: 6px 12px; border-radius: 6px; color: var(--muted); font-weight: 600;
}
.nav a:hover, .nav a.is-active { color: var(--brand); background: var(--brand-softer); }
.nav-product { position: relative; }
.nav-product-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border: 0; border-radius: 6px;
  background: transparent; color: var(--muted); font-weight: 600;
}
.nav-product-btn::after {
  content: ""; width: 6px; height: 6px; margin-top: -3px;
  border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg);
}
.nav-product-btn:hover, .nav-product-btn.is-active, .nav-product.is-open .nav-product-btn {
  color: var(--brand); background: var(--brand-softer);
}
.nav-product.is-open .nav-product-btn::after { margin-top: 2px; transform: rotate(-135deg); }
.nav-product-panel {
  display: none; position: absolute; left: 0; top: calc(100% + 12px); z-index: 30;
  width: 520px; padding: 20px 22px 16px;
  background: #fff; border: 1px solid #eef2f7; border-radius: 16px;
  box-shadow: 0 14px 40px rgba(24, 48, 96, 0.1);
}
.nav-product.is-open .nav-product-panel { display: block; }
.nav-product-label { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.nav-product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 20px; }
.nav-product-panel a, .nav a.nav-product-item {
  display: block; padding: 10px 12px; border-radius: 10px;
  color: inherit; font-weight: 400; background: transparent;
}
.nav-product-panel a:hover, .nav a.nav-product-item:hover {
  color: inherit; background: var(--brand-softer);
}
.nav-product-panel b { display: block; color: var(--ink); font-size: 15px; }
.nav-product-panel span { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; font-weight: 400; }
.header-cta { margin-left: auto; display: flex; gap: 8px; }
.burger { display: none; width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.mobile { display: none; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 20px 16px; }
.mobile.is-open { display: block; }
.mobile a { display: block; padding: 10px 0; border-bottom: 1px solid #f2f3f5; color: var(--ink); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; padding: 0 16px; border-radius: 6px; border: 1px solid transparent;
  font-weight: 600; white-space: nowrap;
}
.btn-lg { height: 44px; padding: 0 22px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-hover); }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-softer); }
.btn-dark { background: #1d2129; color: #fff; }
.row { display: flex; flex-wrap: wrap; gap: 10px; }

.hero { padding: 56px 0 36px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  height: 28px; padding: 0 12px; border-radius: 99px;
  background: var(--brand-soft); color: var(--brand-active); font-size: 12px; font-weight: 700;
}
.eyebrow i { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
h1 { font-size: 40px; line-height: 1.25; color: var(--ink); letter-spacing: -0.02em; margin: 14px 0; }
h1 em { font-style: normal; color: var(--brand); }
h2 { font-size: 28px; line-height: 1.35; color: var(--ink); }
h3 { font-size: 16px; color: var(--ink); }
.lead { font-size: 15px; color: var(--muted); max-width: 520px; }
.notes { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 18px; color: var(--muted); font-size: 13px; }
.notes li { display: flex; align-items: center; gap: 6px; }
.notes li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }

.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); overflow: hidden;
}
.panel-bar {
  display: flex; align-items: center; gap: 6px; padding: 10px 14px;
  background: var(--brand-softer); border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px;
}
.panel-bar i { width: 8px; height: 8px; border-radius: 50%; background: #c9cdd4; }
.panel-bar i:nth-child(1) { background: #f53f3f; }
.panel-bar i:nth-child(2) { background: #ff7d00; }
.panel-bar i:nth-child(3) { background: #00b42a; }
.panel-body { display: grid; grid-template-columns: 1fr 1fr; min-height: 280px; }
.pane { padding: 16px; }
.pane + .pane { border-left: 1px solid var(--line); background: #fafcff; }
.pane strong { display: block; font-size: 12px; color: var(--muted); margin-bottom: 10px; }
.step {
  display: flex; align-items: center; gap: 8px; padding: 8px 10px; margin-bottom: 8px;
  border: 1px solid var(--line); border-radius: 6px; background: #fff; font-size: 13px;
}
.step.on { border-color: #bae0ff; background: var(--brand-softer); color: var(--ink); }
.dot {
  width: 16px; height: 16px; border-radius: 50%; border: 1px dashed var(--line); flex: none;
}
.step.on .dot { border: 0; background: var(--brand); }
.msg { padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 8px; background: #fff; border: 1px solid var(--line); }
.msg.me { background: var(--brand); color: #fff; border: 0; margin-left: 24px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.chip { padding: 3px 10px; border-radius: 99px; background: var(--brand-soft); color: var(--brand-active); font-size: 12px; font-weight: 600; }

.band { padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.band .wrap { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; color: var(--muted); }
.band b { color: var(--ink); margin-right: 8px; }

.section { padding: 64px 0; }
.section.soft { background: rgba(255, 255, 255, 0.62); }
.head { max-width: 640px; margin: 0 auto 32px; text-align: center; }
.head .lead { margin: 10px auto 0; }
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 20px;
}
.card:hover { border-color: #bae0ff; box-shadow: var(--shadow); }
.icon {
  width: 36px; height: 36px; border-radius: 8px; display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand); font-weight: 800; margin-bottom: 12px;
}
.card p { color: var(--muted); margin-top: 6px; }

.table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.table th, .table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid #f2f3f5; }
.table th { background: var(--brand-softer); color: var(--muted); font-size: 12px; }
.table td { color: var(--body); }
.table tr:last-child td { border-bottom: 0; }

.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.kpi { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 12px; text-align: center; }
.kpi b { display: block; font-size: 32px; color: var(--ink); line-height: 1.2; }
.kpi span { color: var(--muted); font-size: 13px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.steps { counter-reset: n; }
.steps li { position: relative; padding: 0 0 22px 44px; }
.steps li::before {
  counter-increment: n; content: counter(n);
  position: absolute; left: 0; top: 0; width: 28px; height: 28px; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand-active); display: grid; place-items: center; font-weight: 700;
}
.checks li { padding-left: 22px; position: relative; margin-bottom: 8px; color: var(--muted); }
.checks li::before { content: ""; position: absolute; left: 0; top: 8px; width: 8px; height: 8px; border-radius: 50%; background: var(--brand); }

.tabs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 24px; }
.tab {
  border: 1px solid var(--line); background: #fff; border-radius: 99px; padding: 7px 14px;
  color: var(--muted); font-weight: 600;
}
.tab.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }
.panel-tab { display: none; }
.panel-tab.is-active { display: block; }

.faq { max-width: 800px; margin: 0 auto; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; margin-bottom: 8px; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--ink); }
.faq p { margin-top: 8px; color: var(--muted); }

.cta {
  background: linear-gradient(135deg, #141820, #1d4f91);
  color: #fff; border-radius: 12px; padding: 40px;
}
.cta h2, .cta p { color: #fff; }
.cta p { color: #c9d4e5; margin: 10px 0 20px; max-width: 560px; }

.page-hero { padding: 40px 0 28px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: 32px; }
.crumb { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.crumb a:hover { color: var(--brand); }

.form { display: grid; gap: 14px; position: relative; }
.field label { display: block; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; height: 40px; border: 1px solid var(--line); border-radius: 6px; padding: 0 12px; background: #fff;
}
.field textarea { height: 96px; padding: 10px 12px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); }
.ok { display: none; padding: 10px 12px; border-radius: 6px; background: #e8ffea; color: #00801e; }
.ok.show { display: block; }
.alert { display: none; padding: 10px 12px; border-radius: 6px; }
.alert.is-show { display: block; }
.alert--ok { background: #e8ffea; color: #00801e; }
.alert--err { background: #ffece8; color: #cb272d; }
.err { color: #f53f3f; font-size: 12px; display: none; }
.invalid .err, .is-invalid .err { display: block; }
.invalid input, .is-invalid input { border-color: #f53f3f; }
.honey { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

body.dock-on .footer { padding-bottom: 88px; }
.dock {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  transform: translateY(110%);
  transition: transform 0.32s ease;
  background: linear-gradient(90deg, #0958d9 0%, #1677ff 38%, #1890ff 72%, #69c0ff 100%);
  box-shadow: 0 -8px 24px rgba(9, 88, 217, 0.2);
}
.dock.is-show { transform: translateY(0); }
.dock .wrap {
  position: relative; height: 64px; display: flex; align-items: center; gap: 12px;
}
.dock p {
  margin: 0 auto 0 0; color: #fff; font-size: 16px; font-weight: 700;
}
.dock .btn-light {
  height: 36px; padding: 0 18px; border-radius: 99px;
  background: #fff; color: #1677ff;
}
.dock .btn-light:hover { background: #f2f8ff; color: #096dd9; }
.dock-top {
  position: absolute; right: 0; top: -22px;
  width: 40px; height: 40px; border: 0; border-radius: 50%;
  background: #fff; color: #1677ff; font-size: 16px; line-height: 1;
  box-shadow: 0 6px 16px rgba(24, 144, 255, 0.18);
}
.dock-top:hover { background: #f2f8ff; }
@media (max-width: 960px) {
  .dock p { font-size: 13px; }
}

.footer { background: #141820; color: #86909c; padding: 40px 0 24px; }
.footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
.footer .wrap.copy { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 28px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; line-height: 1.6; }
.footer .wrap.copy .beian { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; flex-shrink: 0; color: inherit; }
.footer .wrap.copy .beian img { width: 14px; height: 14px; flex-shrink: 0; }
.footer b { color: #fff; display: block; margin-bottom: 10px; }
.footer a:hover { color: #fff; }
.copy { margin-top: 28px; padding-top: 16px; border-top: 1px solid #2a2f3a; font-size: 12px; }

@media (max-width: 960px) {
  .hero-grid, .panel-body, .split, .cards, .cards-3, .kpis, .footer .wrap { grid-template-columns: 1fr; }
  .footer .wrap.copy { flex-direction: column; align-items: flex-start; }
  .nav { display: none; }
  .burger, .mobile, .mobile.is-open { display: none; }
  h1 { font-size: 30px; }
  .hero { padding: 32px 0; }
}