:root {
  color-scheme: dark;
  --accent: #5fe6ff;
  --accent-2: #b39bff;
  --panel: rgba(20, 25, 55, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: #eef3ff;
  font-family: "Inter", "Segoe UI", "Microsoft YaHei UI", system-ui, sans-serif;
  background:
    radial-gradient(circle at 18% 8%, color-mix(in srgb, var(--accent) 24%, transparent), transparent 36%),
    radial-gradient(circle at 84% 88%, color-mix(in srgb, var(--accent-2) 20%, transparent), transparent 42%),
    #080b1d;
}

a { color: inherit; }

.page { width: min(1040px, calc(100% - 32px)); margin: 0 auto; padding-bottom: 64px; }

.site-head {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand { font-weight: 900; text-decoration: none; letter-spacing: .02em; }
.brand span { display: block; color: var(--accent); font-size: 10px; letter-spacing: .28em; margin-top: 3px; }
.site-nav { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }

.hero {
  margin-top: 36px;
  padding: clamp(28px, 6vw, 64px);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  border-radius: 28px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--panel) 92%, var(--accent) 8%), var(--panel));
  box-shadow: 0 28px 90px rgba(0, 0, 0, .42);
}

.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .18em; }
h1 { margin: 0; font-size: clamp(38px, 8vw, 72px); line-height: 1.04; letter-spacing: -.04em; }
.lead { max-width: 760px; margin: 22px 0 0; color: var(--muted); font-size: 17px; line-height: 1.9; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; }
.tags span { padding: 7px 13px; border-radius: 999px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); font-size: 12px; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border-radius: 12px;
  background: var(--accent);
  color: #06101c;
  text-decoration: none;
  font-weight: 850;
  box-shadow: 0 12px 34px color-mix(in srgb, var(--accent) 24%, transparent);
}
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.btn.secondary { color: #eef3ff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); box-shadow: none; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 20px; }
.panel { padding: 26px; border-radius: 20px; background: rgba(16, 20, 44, .82); border: 1px solid rgba(255,255,255,.1); }
.panel h2 { margin: 0 0 14px; font-size: 20px; }
.panel p, .panel li { color: var(--muted); line-height: 1.85; }
.panel ul { margin: 0; padding-left: 20px; }
.notice { margin-top: 18px; color: rgba(255,255,255,.5); font-size: 13px; }
footer { margin-top: 34px; color: rgba(255,255,255,.42); font-size: 12px; }

@media (max-width: 700px) {
  .site-head { align-items: flex-start; padding-top: 18px; }
  .grid { grid-template-columns: 1fr; }
  .hero { margin-top: 20px; border-radius: 22px; }
  .actions .btn { width: 100%; }
}