:root {
  --navy: #0E3558;
  --blue: #2F80C9;
  --aqua: #68C7E8;
  --ice: #F5FBFF;
  --mist: #E9F6FC;
  --text: #213244;
  --muted: #64748B;
  --line: #D6EAF4;
  --white: #FFFFFF;
  --shadow: 0 24px 70px rgba(14, 53, 88, 0.13);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Avenir Next", "Aptos", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 0%, rgba(104,199,232,0.22), transparent 34%),
    linear-gradient(180deg, #F9FDFF 0%, #FFFFFF 46%, #F4FBFF 100%);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1140px, calc(100% - 40px)); margin: 0 auto; }

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.86);
  border-bottom: 1px solid rgba(214,234,244,0.86);
  backdrop-filter: blur(18px);
}
.nav-inner {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 15px;
  min-width: 0;
}
.logo {
  width: 58px;
  height: 58px;
  object-fit: contain;
  border-radius: 16px;
}
.brand-title {
  color: var(--navy);
  font-size: 18px;
  font-weight: 850;
  letter-spacing: 0.045em;
  line-height: 1.05;
}
.brand-cn {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: var(--muted);
}
.nav-links a:hover { color: var(--blue); }
.lang {
  display: flex;
  gap: 7px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
}
.lang a {
  padding: 4px 9px;
  border-radius: 999px;
  font-weight: 700;
}
.lang a.active {
  color: var(--blue);
  background: var(--mist);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 106px 0 98px;
}
.hero::before {
  content: "";
  position: absolute;
  right: -170px;
  top: -210px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(104,199,232,0.36), rgba(47,128,201,0.10), transparent 70%);
  z-index: -1;
}
.hero::after {
  content: "";
  position: absolute;
  left: -240px;
  bottom: -300px;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47,128,201,0.12), transparent 70%);
  z-index: -1;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 68px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  color: var(--blue);
  background: rgba(47,128,201,0.10);
  border: 1px solid rgba(47,128,201,0.16);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 800;
}
h1 {
  margin: 25px 0 20px;
  font-size: clamp(44px, 6vw, 80px);
  line-height: 0.98;
  letter-spacing: -0.058em;
  color: var(--navy);
}
.hero-copy {
  font-size: 19px;
  color: var(--muted);
  max-width: 650px;
}
.cta-row { display: flex; gap: 14px; margin-top: 35px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 13px 21px;
  font-weight: 800;
  border: 1px solid transparent;
}
.btn-primary {
  color: white;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  box-shadow: 0 18px 36px rgba(47,128,201,0.24);
}
.btn-secondary {
  color: var(--navy);
  background: white;
  border-color: var(--line);
}

.visual-card {
  position: relative;
  min-height: 460px;
  border-radius: 38px;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 18%, rgba(104,199,232,0.52), transparent 31%),
    linear-gradient(150deg, rgba(255,255,255,0.98), rgba(229,246,253,0.86));
  border: 1px solid rgba(214,234,244,0.96);
  box-shadow: var(--shadow);
}
.visual-card img {
  position: absolute;
  left: 50%;
  top: 46%;
  width: min(72%, 340px);
  transform: translate(-50%, -50%);
  border-radius: 24px;
  filter: drop-shadow(0 24px 48px rgba(14,53,88,0.15));
}
.ring {
  position: absolute;
  left: 50%;
  top: 47%;
  width: 380px;
  height: 380px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(47,128,201,0.20);
  border-radius: 50%;
}
.ring.two {
  width: 270px;
  height: 270px;
  border-color: rgba(104,199,232,0.24);
}
.data-chip {
  position: absolute;
  z-index: 4;
  padding: 11px 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.90);
  border: 1px solid rgba(214,234,244,0.96);
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 14px 36px rgba(14,53,88,0.10);
}
.chip-1 { top: 38px; left: 36px; }
.chip-2 { top: 128px; right: 34px; }
.chip-3 { bottom: 84px; left: 42px; }
.chip-4 { bottom: 38px; right: 52px; }

.section { padding: 88px 0; }
.section-title { max-width: 780px; margin-bottom: 42px; }
.section-title h2 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.08;
  margin: 0 0 15px;
  color: var(--navy);
  letter-spacing: -0.035em;
}
.section-title p {
  color: var(--muted);
  font-size: 18px;
  margin: 0;
}
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.card {
  background: rgba(255,255,255,0.88);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 27px;
  min-height: 270px;
  box-shadow: 0 18px 52px rgba(14,53,88,0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 64px rgba(14,53,88,0.10);
}
.icon {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--navy), var(--blue), var(--aqua));
  margin-bottom: 20px;
}
.card h3 {
  color: var(--navy);
  margin: 0 0 12px;
  font-size: 19px;
  line-height: 1.25;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.about-panel {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 38px;
  align-items: center;
  color: white;
  background:
    radial-gradient(circle at 88% 18%, rgba(125,200,239,0.28), transparent 30%),
    linear-gradient(135deg, #0E3558, #2F80C9);
  border-radius: 38px;
  padding: 50px;
  box-shadow: var(--shadow);
}
.about-panel h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}
.about-panel p {
  margin: 0 0 18px;
  color: rgba(255,255,255,0.88);
  font-size: 17px;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.contact-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 31px;
  box-shadow: 0 18px 52px rgba(14,53,88,0.06);
}
.contact-card h3 { margin: 0 0 12px; color: var(--navy); }
.contact-card p { margin: 0; color: var(--muted); }
.email { color: var(--blue); font-weight: 850; }

.footer {
  padding: 36px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
@media (max-width: 940px) {
  .hero-grid, .about-panel, .contact-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .visual-card { min-height: 390px; }
}
@media (max-width: 560px) {
  .container { width: min(100% - 28px, 1140px); }
  .nav-inner { height: 76px; }
  .logo { width: 50px; height: 50px; }
  .brand-title { font-size: 15px; }
  .brand-cn { font-size: 11px; }
  .hero { padding: 68px 0; }
  .cards { grid-template-columns: 1fr; }
  .visual-card { min-height: 330px; border-radius: 30px; }
  .visual-card img { width: 78%; }
  .about-panel { padding: 32px; border-radius: 30px; }
}