:root {
  --bg: #f6f8fb;
  --ink: #172033;
  --muted: #5a667a;
  --line: #dce4ef;
  --primary: #1f6feb;
  --primary-dark: #174ea6;
  --teal: #0f9f8e;
  --amber: #d97706;
  --panel: #ffffff;
  --radius: 8px;
  --shadow: 0 14px 34px rgba(20, 45, 80, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.68;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.nav { height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 760; letter-spacing: 0; }
.brand-logo { width: 142px; height: 38px; display: block; object-fit: contain; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 8px;
  display: grid; place-items: center;
  color: #fff; background: linear-gradient(135deg, var(--primary), var(--teal));
  font-weight: 800;
}
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; color: #31405a; }
.nav-links a:hover { color: var(--primary); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 40px; padding: 9px 16px;
  border: 1px solid var(--line); border-radius: 6px;
  background: #fff; color: var(--ink); font-weight: 650;
}
.btn.primary { color: #fff; background: var(--primary); border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-dark); }
.hero { background: linear-gradient(180deg, #eef5ff 0%, #f7fbff 100%); border-bottom: 1px solid var(--line); }
.hero-grid { min-height: 620px; display: grid; grid-template-columns: .92fr 1.08fr; gap: 34px; align-items: center; padding: 58px 0 54px; }
.hero-grid > *, .flow-row > *, .contact-grid > * { min-width: 0; }
.eyebrow { color: var(--primary-dark); font-weight: 700; font-size: 14px; }
h1, h2, h3 { line-height: 1.22; margin: 0; letter-spacing: 0; }
h1 { font-size: 48px; max-width: 660px; overflow-wrap: anywhere; }
.hero-line { display: block; }
h2 { font-size: 32px; }
h3 { font-size: 20px; }
.lead { font-size: 18px; color: var(--muted); margin: 20px 0 26px; max-width: 640px; overflow-wrap: anywhere; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-visual { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid #d6e4f5; background: #fff; }
.hero-visual img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 26px; }
.stat { border-left: 3px solid var(--primary); padding: 4px 0 4px 12px; }
.stat strong { display: block; font-size: 24px; }
.section { padding: 74px 0; }
.section.white { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 30px; }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 680px; }
.reason-grid, .feature-grid, .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.reason, .feature-card, .price-card, .solution-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: 0 8px 22px rgba(20,45,80,.06);
}
.feature-art {
  width: 100%;
  aspect-ratio: 26 / 15;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  margin-bottom: 18px;
  background: #f8fafc;
}
.icon {
  width: 42px; height: 42px; border-radius: 8px; display: grid; place-items: center;
  margin-bottom: 16px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--teal));
}
.muted { color: var(--muted); }
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.price-card.featured { border-color: #9cc3ff; box-shadow: var(--shadow); }
.price { margin: 18px 0; font-size: 28px; font-weight: 760; }
.price small { font-size: 14px; color: var(--muted); font-weight: 500; }
ul.clean { list-style: none; padding: 0; margin: 18px 0 0; }
ul.clean li { padding: 8px 0 8px 22px; position: relative; border-top: 1px solid #edf2f7; }
ul.clean li::before { content: ""; position: absolute; left: 0; top: 18px; width: 8px; height: 8px; border-radius: 50%; background: var(--teal); }
.flow { display: grid; gap: 18px; }
.flow-row { display: grid; grid-template-columns: 260px 1fr; gap: 26px; align-items: start; padding: 26px 0; border-top: 1px solid var(--line); }
.flow-row:first-child { border-top: 0; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag { padding: 5px 10px; border-radius: 999px; background: #eaf3ff; color: #174ea6; font-size: 13px; }
.contact-band { background: #102a43; color: #fff; }
.contact-band .muted { color: #cbd8e6; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.contact-box { border: 1px solid rgba(255,255,255,.18); border-radius: var(--radius); padding: 24px; background: rgba(255,255,255,.06); }
.footer { background: #0b1c2c; color: #cbd8e6; padding: 32px 0; font-size: 14px; }
.footer .container { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer a { color: #fff; margin-right: 14px; }
.page-hero { padding: 58px 0 44px; background: #eef5ff; border-bottom: 1px solid var(--line); }
.content { max-width: 920px; }
.policy h2 { margin-top: 34px; font-size: 24px; }
.policy p { color: #334155; }
table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; background: #fff; }
th, td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; }
th { background: #eef5ff; }
.form-shell { min-height: calc(100vh - 180px); display: grid; place-items: center; padding: 60px 20px; }
.form-box { width: min(430px, 100%); background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.field { margin-top: 16px; }
.field label { display: block; font-weight: 650; margin-bottom: 6px; }
.field input { width: 100%; min-height: 42px; border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; font: inherit; }
.notice { background: #fff7ed; border: 1px solid #fed7aa; color: #7c2d12; padding: 14px 16px; border-radius: var(--radius); }
@media (max-width: 860px) {
  .nav { height: auto; padding: 14px 0; align-items: stretch; flex-direction: column; gap: 12px; }
  .nav-links { flex-wrap: wrap; justify-content: flex-start; gap: 10px 14px; }
  .nav-links .btn { min-height: 34px; padding: 6px 12px; }
  .hero-grid, .contact-grid, .flow-row { grid-template-columns: 1fr; }
  .hero-grid { min-height: auto; padding: 34px 0 38px; gap: 28px; }
  h1 { font-size: 28px; }
  h1, .lead { max-width: 100%; overflow-wrap: anywhere; }
  .lead { font-size: 17px; line-height: 1.75; margin: 16px 0 22px; }
  h2 { font-size: 27px; }
  .reason-grid, .feature-grid, .solution-grid, .price-grid, .stats { grid-template-columns: 1fr; }
  .section-head { display: block; }
}