:root {
  --bg: #070a12;
  --panel: rgba(14, 20, 33, 0.78);
  --text: #edf4ff;
  --muted: #9fb0c8;
  --line: rgba(255,255,255,0.12);
  --blue: #4ec4ff;
  --green: #6ff1c8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 0%, rgba(78,196,255,0.14), transparent 30%),
    radial-gradient(circle at 88% 8%, rgba(111,241,200,0.12), transparent 28%),
    linear-gradient(180deg, #070a12 0%, #0a0f19 58%, #06080d 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.032) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 74%);
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  background: rgba(6,8,13,0.66);
  backdrop-filter: blur(18px);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  color: var(--text);
  font-size: 28px;
  font-weight: 850;
  text-decoration: none;
}

.brand-link img {
  width: 82px;
  height: 82px;
  object-fit: contain;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.home-link {
  color: rgba(237,244,255,0.74);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.lang-toggle {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  color: var(--text);
  cursor: pointer;
}

.lang-toggle span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}

.lang-toggle .active {
  color: #031018;
  background: var(--green);
}

main {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 170px clamp(20px, 5vw, 72px) 86px;
}

.page-hero {
  margin-bottom: 34px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

h1 {
  max-width: 880px;
  margin: 0 0 18px;
  font-size: clamp(44px, 8vw, 86px);
  line-height: 0.96;
}

.lead {
  max-width: 760px;
  color: rgba(237,244,255,0.78);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.55;
}

.document-card,
.contact-grid article {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.07), rgba(255,255,255,0.024)),
    var(--panel);
  backdrop-filter: blur(12px);
}

.document-card {
  padding: clamp(26px, 5vw, 56px);
  border-radius: 24px;
}

.document-card section + section {
  margin-top: 36px;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.2vw, 38px);
}

p,
li {
  color: rgba(237,244,255,0.76);
  line-height: 1.72;
}

ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

a {
  color: var(--green);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.contact-grid article {
  min-height: 210px;
  padding: 24px;
  border-radius: 20px;
}

.contact-grid h2 {
  font-size: 26px;
}

.contact-card-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  margin-top: 14px;
  padding: 0 16px;
  border-radius: 999px;
  color: #031018;
  background: var(--green);
  font-size: 13px;
  font-weight: 850;
  text-decoration: none;
}

.placeholder-box {
  display: grid;
  place-items: center;
  min-height: 150px;
  margin-top: 14px;
  border: 1px dashed rgba(255,255,255,0.22);
  border-radius: 16px;
  color: rgba(237,244,255,0.66);
  text-align: center;
}

.wechat-qr {
  display: block;
  width: min(260px, 100%);
  margin-top: 16px;
  border: 10px solid rgba(255,255,255,0.92);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(0,0,0,0.28);
}

.site-footer {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  padding: 28px 24px 36px;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: rgba(237,244,255,0.54);
  text-align: center;
  font-size: 12px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px 36px;
  margin-bottom: 16px;
}

.home-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  padding: 0 18px;
  border: 1px solid rgba(111,241,200,0.42);
  border-radius: 999px;
  color: #031018;
  background: var(--green);
  box-shadow: 0 0 34px rgba(111,241,200,0.18);
  font-size: 13px;
  font-weight: 850;
  text-decoration: none;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: rgba(237,244,255,0.72);
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.footer-links .partner-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  gap: 10px;
}

.footer-links .partner-link img {
  width: 60px;
  height: 18px;
  border-radius: 0;
  object-fit: contain;
}

.footer-links a:hover {
  color: var(--text);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .site-header {
    padding: 14px 16px;
  }

  .brand-link img {
    width: 64px;
    height: 64px;
  }

  .brand-link {
    font-size: 22px;
  }

  .home-link {
    display: none;
  }

  main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}