:root {
  color-scheme: light;
  --ink: #10204a;
  --muted: #65708b;
  --blue: #2457d6;
  --blue-deep: #153ca7;
  --line: #dfe5f0;
  --paper: #f7f8fb;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 50%;
  display: flex;
  width: min(1180px, calc(100% - 48px));
  height: 88px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.2);
  color: #fff;
  transform: translateX(-50%);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand strong { display: block; font-size: 18px; letter-spacing: .01em; }
.brand small { display: block; margin-top: 2px; color: rgba(255,255,255,.65); font-size: 11px; }
.brand-mark { position: relative; display: inline-block; width: 38px; height: 38px; flex: 0 0 auto; }
.brand-mark i, .brand-mark b { position: absolute; width: 24px; height: 24px; border: 3px solid currentColor; border-radius: 5px; }
.brand-mark i { top: 3px; left: 3px; }
.brand-mark b { right: 3px; bottom: 3px; background: var(--blue-deep); }
.site-header nav { display: flex; gap: 32px; }
.site-header nav a { color: rgba(255,255,255,.72); font-size: 13px; text-decoration: none; transition: color .2s ease; }
.site-header nav a:hover { color: #fff; }

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr);
  gap: 40px;
  align-items: center;
  padding: 142px max(24px, calc((100vw - 1180px) / 2)) 84px;
  overflow: hidden;
  background: radial-gradient(circle at 75% 30%, #326cf2 0, #2457d6 32%, #173eae 68%, #102c7d 100%);
  color: #fff;
}
.eyebrow { margin: 0 0 18px; color: #a9c1ff; font-size: 12px; font-weight: 700; letter-spacing: .2em; }
.hero h1 { max-width: 700px; margin: 0; font-size: clamp(46px, 5.5vw, 78px); line-height: 1.08; letter-spacing: -.045em; }
.lead { max-width: 650px; margin: 28px 0 34px; color: rgba(255,255,255,.72); font-size: 17px; line-height: 1.9; }
.primary-link { display: inline-flex; align-items: center; gap: 32px; padding: 15px 22px; border: 1px solid rgba(255,255,255,.35); border-radius: 100px; font-size: 14px; text-decoration: none; transition: .2s ease; }
.primary-link:hover { background: #fff; color: var(--blue-deep); }

.visual { position: relative; height: 480px; }
.cube { position: absolute; border: 2px solid rgba(255,255,255,.82); border-radius: 38px; transform: rotate(8deg); }
.cube-back { width: 270px; height: 270px; top: 70px; right: 90px; background: rgba(255,255,255,.05); box-shadow: inset 0 0 70px rgba(255,255,255,.08); }
.cube-front { width: 240px; height: 240px; right: 0; bottom: 50px; background: rgba(14, 47, 139, .42); backdrop-filter: blur(9px); }
.cube-front span { position: absolute; inset: 42px; border: 2px solid rgba(255,255,255,.65); border-radius: 24px; }
.orbit { position: absolute; border: 1px solid rgba(255,255,255,.14); border-radius: 50%; }
.orbit-one { width: 430px; height: 430px; top: 15px; right: 0; }
.orbit-two { width: 570px; height: 570px; top: -55px; right: -70px; }
.visual p { position: absolute; right: 6px; bottom: 8px; color: rgba(255,255,255,.45); font-size: 10px; letter-spacing: .25em; }

.intro, .privacy {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 120px 0;
}
.section-index { margin: 8px 0 0; color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .13em; }
.intro h2, .privacy h2, .status-panel h2 { margin: 0; font-size: clamp(34px, 4vw, 54px); line-height: 1.2; letter-spacing: -.035em; }
.intro div > p, .privacy div > p { max-width: 770px; margin: 28px 0 0; color: var(--muted); font-size: 17px; line-height: 2; }

.services { display: grid; grid-template-columns: repeat(3, 1fr); width: min(1180px, calc(100% - 48px)); margin: 0 auto 120px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.services article { min-height: 260px; padding: 34px 34px 40px; border-right: 1px solid var(--line); }
.services article:last-child { border-right: 0; }
.services span { color: var(--blue); font-size: 12px; font-weight: 700; }
.services h3 { margin: 70px 0 12px; font-size: 24px; }
.services p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }

.status-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: end; width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding: 72px; background: var(--ink); color: #fff; border-radius: 28px; }
.status-panel > p { margin: 0; color: #aeb8d0; font-size: 15px; line-height: 1.9; }

.privacy { padding-bottom: 110px; }
footer { display: flex; width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding: 38px 0 50px; align-items: flex-start; justify-content: space-between; border-top: 1px solid var(--line); }
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--blue); }
.brand-mark.small { width: 30px; height: 30px; }
.brand-mark.small i, .brand-mark.small b { width: 19px; height: 19px; border-width: 2px; border-radius: 4px; }
.footer-meta { text-align: right; color: var(--muted); font-size: 12px; line-height: 1.7; }
.footer-meta p { margin: 0; }
.footer-meta a { display: inline-block; margin: 6px 0; color: var(--blue); text-decoration: none; }

@media (max-width: 860px) {
  .site-header nav { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 140px; }
  .visual { height: 340px; margin-top: 10px; }
  .cube-back { width: 220px; height: 220px; top: 20px; right: 22%; }
  .cube-front { width: 200px; height: 200px; right: 8%; bottom: 24px; }
  .orbit-one { width: 330px; height: 330px; right: 4%; }
  .orbit-two { width: 430px; height: 430px; right: -8%; }
  .intro, .privacy { grid-template-columns: 1fr; gap: 32px; padding: 84px 0; }
  .services { grid-template-columns: 1fr; }
  .services article { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .services article:last-child { border-bottom: 0; }
  .services h3 { margin-top: 34px; }
  .status-panel { grid-template-columns: 1fr; gap: 30px; padding: 42px 30px; }
}

@media (max-width: 520px) {
  .site-header { width: calc(100% - 32px); }
  .hero { padding-left: 20px; padding-right: 20px; }
  .hero h1 { font-size: 43px; }
  .lead { font-size: 15px; }
  .visual { height: 290px; }
  .intro, .privacy, .services, .status-panel, footer { width: calc(100% - 32px); }
  .status-panel { border-radius: 20px; }
  footer { display: block; }
  .footer-meta { margin-top: 28px; text-align: left; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }