:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #657089;
  --paper: #f5f7fb;
  --white: #ffffff;
  --line: #dfe5ef;
  --blue: #2468e5;
  --blue-dark: #154cb2;
  --aqua: #8ee7dc;
  --navy: #0d1d3b;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.7; }
a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px clamp(24px, 6vw, 96px);
  background: rgba(245, 247, 251, 0.92);
  border-bottom: 1px solid rgba(223, 229, 239, 0.85);
  backdrop-filter: blur(16px);
}

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), #7048e8);
  border-radius: 11px;
  box-shadow: 0 10px 25px rgba(36, 104, 229, 0.28);
}
nav { display: flex; gap: clamp(14px, 2.4vw, 34px); }
nav a { color: #4b5770; font-size: 14px; font-weight: 650; text-decoration: none; }
nav a:hover { color: var(--blue); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
  align-items: center;
  gap: clamp(48px, 7vw, 110px);
  min-height: 710px;
  padding: 90px clamp(24px, 8vw, 130px) 110px;
  overflow: hidden;
  background:
    radial-gradient(circle at 86% 12%, rgba(142, 231, 220, 0.28), transparent 30%),
    radial-gradient(circle at 12% 82%, rgba(92, 123, 255, 0.16), transparent 32%),
    var(--paper);
}

.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.hero h1 { margin: 0; font-size: clamp(46px, 7vw, 86px); line-height: 1.06; letter-spacing: -0.045em; }
.lead { max-width: 680px; margin: 30px 0 0; color: var(--muted); font-size: clamp(17px, 2vw, 21px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; font-weight: 750; text-decoration: none; }
.primary { color: white; background: var(--blue); box-shadow: 0 15px 35px rgba(36, 104, 229, 0.3); }
.primary:hover { background: var(--blue-dark); }
.secondary { background: white; border: 1px solid var(--line); }

.hero-panel { position: relative; display: grid; place-items: center; min-height: 480px; }
.panel-card {
  position: relative;
  z-index: 4;
  width: min(100%, 430px);
  padding: 42px;
  color: white;
  background: linear-gradient(145deg, #10254f, #1d4aa1 72%, #2d77d6);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 34px;
  box-shadow: 0 40px 90px rgba(13, 29, 59, 0.28);
}
.panel-card strong { display: block; margin: 48px 0 18px; font-size: clamp(28px, 4vw, 42px); line-height: 1.18; }
.panel-label { color: var(--aqua); font-size: 13px; font-weight: 800; letter-spacing: 0.12em; }
.panel-card p { margin: 26px 0 0; color: #d8e6ff; }
.wave { display: flex; align-items: center; gap: 8px; height: 78px; }
.wave i { display: block; width: 8px; background: linear-gradient(to top, var(--aqua), white); border-radius: 10px; }
.wave i:nth-child(1), .wave i:nth-child(8) { height: 20px; }
.wave i:nth-child(2), .wave i:nth-child(7) { height: 42px; }
.wave i:nth-child(3), .wave i:nth-child(6) { height: 66px; }
.wave i:nth-child(4) { height: 48px; }
.wave i:nth-child(5) { height: 76px; }
.signal { position: absolute; border: 1px solid rgba(36, 104, 229, 0.18); border-radius: 50%; }
.signal-one { width: 480px; height: 480px; }
.signal-two { width: 610px; height: 610px; }
.signal-three { width: 760px; height: 760px; }

.section { padding: 105px clamp(24px, 8vw, 130px); }
.section-heading { max-width: 720px; margin-bottom: 48px; }
.section h2, .contact-section h2, .legal-page h1 { margin: 0; font-size: clamp(34px, 5vw, 56px); line-height: 1.16; letter-spacing: -0.035em; }
.section-heading > p:last-child { color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.feature-card { min-height: 250px; padding: 30px; background: white; border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 14px 34px rgba(37, 50, 80, 0.06); }
.feature-index { color: var(--blue); font-size: 12px; font-weight: 850; letter-spacing: 0.12em; }
.feature-card h3 { margin: 38px 0 12px; font-size: 23px; }
.feature-card p { margin: 0; color: var(--muted); }
.accent-card { color: white; background: var(--navy); border-color: var(--navy); }
.accent-card .feature-index { color: var(--aqua); }
.accent-card p { color: #cbd6e9; }

.company-section { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(45px, 10vw, 150px); background: white; }
.english-name { color: var(--muted); font-size: 18px; }
.company-copy > p { margin-top: 0; color: #3c4861; font-size: 19px; }
dl { margin: 34px 0 0; }
dl div { display: grid; grid-template-columns: 92px 1fr; gap: 20px; padding: 18px 0; border-top: 1px solid var(--line); }
dt { color: var(--muted); font-size: 14px; font-weight: 700; }
dd { margin: 0; }
dd a { color: var(--blue); }

.contact-section { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 90px clamp(24px, 8vw, 130px); color: white; background: linear-gradient(130deg, #12264f, #1a55bc); }
.contact-section p:not(.eyebrow) { max-width: 700px; color: #d8e5ff; }
.light { color: var(--aqua); }
.light-button { flex: 0 0 auto; color: var(--navy); background: white; }

footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; padding: 38px clamp(24px, 8vw, 130px); background: #09152c; color: #b8c5db; }
footer div { display: flex; flex-direction: column; gap: 4px; }
footer strong { color: white; }
.footer-links { align-items: flex-end; }
.footer-links a { color: white; }

.legal-page { max-width: 940px; margin: 0 auto; padding: 90px 24px 120px; }
.legal-meta { color: var(--muted); }
.legal-page section { padding: 24px 0; border-top: 1px solid var(--line); }
.legal-page section:first-of-type { margin-top: 48px; }
.legal-page h2 { margin: 0 0 10px; font-size: 22px; }
.legal-page p { color: #44516b; }
.legal-page a { color: var(--blue); }

@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; }
  .hero-panel { min-height: 430px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .company-section { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-header { align-items: flex-start; gap: 18px; padding: 14px 20px; }
  nav { gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
  nav a { font-size: 12px; }
  .hero { min-height: auto; padding: 65px 20px 78px; }
  .hero-panel { min-height: 360px; }
  .panel-card { padding: 30px; border-radius: 26px; }
  .signal-one { width: 380px; height: 380px; }
  .signal-two { width: 480px; height: 480px; }
  .signal-three { display: none; }
  .section { padding: 78px 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .contact-section, footer { align-items: flex-start; flex-direction: column; padding-left: 20px; padding-right: 20px; }
  .footer-links { align-items: flex-start; }
  dl div { grid-template-columns: 1fr; gap: 4px; }
}