:root {
  --bg: #f7f9fc;
  --text: #172033;
  --muted: #667085;
  --primary: #155eef;
  --primary-dark: #0f3fb5;
  --accent: #16b8a6;
  --card: #ffffff;
  --line: rgba(21, 94, 239, 0.12);
  --shadow: 0 24px 70px rgba(15, 40, 90, 0.12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(247, 249, 252, 0.78);
  border-bottom: 1px solid rgba(20, 45, 90, 0.08);
}
.nav {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 12px 24px rgba(21, 94, 239, 0.25);
}
.brand-text { letter-spacing: -0.02em; }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 15px; color: #344054; }
.nav-links a:hover { color: var(--primary); }
.nav-cta {
  padding: 10px 16px;
  border-radius: 999px;
  color: white !important;
  background: var(--primary);
  box-shadow: 0 12px 24px rgba(21, 94, 239, 0.22);
}
.menu-btn { display: none; background: none; border: 0; padding: 8px; }
.menu-btn span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 70px;
  background:
    radial-gradient(circle at 12% 18%, rgba(21, 94, 239, 0.14), transparent 26%),
    radial-gradient(circle at 88% 14%, rgba(22, 184, 166, 0.16), transparent 24%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -35% -8%;
  height: 360px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.75));
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 13px;
}
h1, h2, h3 { line-height: 1.18; margin: 0; }
h1 { font-size: clamp(40px, 6vw, 68px); letter-spacing: -0.06em; }
h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -0.04em; }
h3 { font-size: 20px; letter-spacing: -0.02em; }
.hero-desc { max-width: 650px; margin: 24px 0 32px; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
}
.btn.primary { color: white; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); box-shadow: 0 18px 36px rgba(21, 94, 239, 0.25); }
.btn.ghost { color: var(--text); background: rgba(255,255,255,0.72); border-color: rgba(20,45,90,0.10); }
.btn.light { background: #fff; color: var(--primary); }
.trust-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.trust-list span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(20,45,90,0.08);
  color: #475467;
  font-size: 14px;
}
.hero-card { position: relative; min-height: 420px; }
.card-glow {
  position: absolute;
  inset: 24px;
  border-radius: 42px;
  background: linear-gradient(135deg, rgba(21,94,239,.28), rgba(22,184,166,.24));
  filter: blur(26px);
}
.hero-card-inner {
  position: relative;
  height: 100%;
  min-height: 420px;
  padding: 40px;
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.72)),
    linear-gradient(135deg, rgba(21,94,239,.18), rgba(22,184,166,.14));
  border: 1px solid rgba(255,255,255,.84);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.card-label { color: var(--muted); font-weight: 800; margin: 0 0 10px; }
.hero-card h2 { font-size: clamp(42px, 5vw, 62px); color: var(--primary); }
.hero-card p { color: var(--muted); }
.mini-form { margin-top: 22px; display: grid; gap: 12px; }
.mini-form div {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(20,45,90,.08);
  color: #475467;
}

.section { padding: 86px 0; }
.logos-strip { padding: 24px 0; background: white; border-block: 1px solid rgba(20,45,90,.08); }
.strip-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 12px; align-items: center; text-align: center; }
.strip-grid span { color: #475467; font-weight: 800; font-size: 14px; }
.section-heading { max-width: 760px; margin: 0 auto 42px; text-align: center; }
.section-heading p:not(.eyebrow) { color: var(--muted); margin: 16px 0 0; }
.align-left { text-align: left; margin-left: 0; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card, .advantage-card, details {
  background: var(--card);
  border: 1px solid rgba(20,45,90,.08);
  border-radius: var(--radius);
  box-shadow: 0 14px 38px rgba(15, 40, 90, 0.06);
}
.service-card { padding: 26px; transition: .25s ease; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 22px 56px rgba(15, 40, 90, 0.10); }
.icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: var(--primary);
  background: rgba(21,94,239,.10);
  font-weight: 900;
  margin-bottom: 18px;
}
.service-card p, .advantage-card p, details p { color: var(--muted); margin-bottom: 0; }

.process { background: #fff; }
.process-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 54px; align-items: start; }
.timeline { display: grid; gap: 16px; }
.timeline-item { display: grid; grid-template-columns: 50px 1fr; gap: 18px; padding: 22px; border-radius: var(--radius); background: var(--bg); border: 1px solid rgba(20,45,90,.08); }
.timeline-item span { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; color: white; background: var(--primary); font-weight: 900; }
.timeline-item p { margin: 8px 0 0; color: var(--muted); }
.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.advantage-card { padding: 28px; }

.partners { background: #fff; }
.partner-card {
  display: grid;
  grid-template-columns: 1fr .92fr;
  gap: 34px;
  align-items: stretch;
  padding: 42px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 10% 15%, rgba(21,94,239,.10), transparent 28%),
    radial-gradient(circle at 90% 20%, rgba(22,184,166,.12), transparent 25%),
    var(--bg);
  border: 1px solid rgba(20,45,90,.08);
  box-shadow: var(--shadow);
}
.partner-copy { display: flex; flex-direction: column; justify-content: center; }
.partner-copy p:not(.eyebrow) { color: var(--muted); font-size: 17px; margin: 20px 0 0; }
.partner-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.partner-tags span {
  padding: 9px 13px;
  border-radius: 999px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(20,45,90,.08);
  color: #475467;
  font-weight: 800;
  font-size: 14px;
}
.partner-panel {
  padding: 30px;
  border-radius: 28px;
  background: #fff;
  border: 1px solid rgba(20,45,90,.08);
  box-shadow: 0 14px 38px rgba(15, 40, 90, 0.06);
}
.partner-panel ul { margin: 18px 0 24px; padding-left: 20px; color: var(--muted); }
.partner-panel li { margin: 10px 0; }
.partner-note { margin: 16px 0 0; color: var(--muted); font-size: 14px; }

.cta-band { background: linear-gradient(135deg, var(--primary), #09347f); color: white; }
.cta-band .eyebrow, .cta-band p { color: rgba(255,255,255,.76); }
.cta-grid { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.cta-grid p { margin-bottom: 0; }

.faq-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 48px; align-items: start; }
.faq-list { display: grid; gap: 14px; }
details { padding: 22px 24px; }
summary { cursor: pointer; font-weight: 900; font-size: 18px; }
summary::marker { color: var(--primary); }
.contact { padding-top: 20px; }
.contact-card {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: center;
  padding: 42px;
  border-radius: 34px;
  background: #fff;
  border: 1px solid rgba(20,45,90,.08);
  box-shadow: var(--shadow);
}
.contact-card p { color: var(--muted); margin-bottom: 0; }
.wechat-box { padding: 28px; border-radius: 26px; background: linear-gradient(135deg, rgba(21,94,239,.10), rgba(22,184,166,.12)); border: 1px solid rgba(21,94,239,.10); text-align: center; }
.wechat-box span, .wechat-box small { display: block; color: var(--muted); }
.wechat-box strong { display: block; color: var(--primary); font-size: 36px; margin: 8px 0; }
.footer { padding: 32px 0 54px; color: #667085; }
.footer-grid { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(20,45,90,.08); padding-top: 24px; }
.footer p { margin: 0; }
.float-contact {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  padding: 14px 18px;
  border-radius: 18px;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 20px 45px rgba(21,94,239,.28);
  font-size: 14px;
  text-align: center;
}
.float-contact strong { font-size: 15px; }

@media (max-width: 980px) {
  .menu-btn { display: block; }
  .nav-links {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    border-radius: 20px;
    background: white;
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .hero-grid, .process-grid, .faq-grid, .contact-card, .partner-card { grid-template-columns: 1fr; }
  .service-grid, .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1160px); }
  .hero { padding: 60px 0 44px; }
  .section { padding: 58px 0; }
  .service-grid, .advantage-grid, .strip-grid { grid-template-columns: 1fr; }
  .hero-card-inner, .contact-card, .partner-card { padding: 26px; }
  .hero-card, .hero-card-inner { min-height: auto; }
  .cta-grid, .footer-grid { flex-direction: column; align-items: flex-start; }
  .float-contact { right: 14px; bottom: 14px; }
}