:root {
  color-scheme: dark;
  --ink: #f6f7fb;
  --muted: #a9b2c7;
  --accent: #86a8ff;
  --accent-bright: #bda7ff;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: #0b1020;
}

.page-shell {
  position: relative;
  isolation: isolate;
  display: grid;
  place-items: center;
  min-height: 100vh;
  overflow: hidden;
  padding: 24px;
  background:
    radial-gradient(circle at 50% -10%, rgba(111, 138, 255, .27), transparent 45%),
    linear-gradient(145deg, #111a35 0%, #090d1a 58%, #10152a 100%);
}

.page-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .22;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

.glow {
  position: absolute;
  z-index: -1;
  width: 320px;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .3;
  animation: drift 12s ease-in-out infinite alternate;
}

.glow-one { background: #5f7fff; top: 8%; left: 5%; }
.glow-two { background: #b45fff; right: 2%; bottom: 4%; animation-delay: -5s; }

.notice-card {
  width: min(100%, 560px);
  padding: clamp(42px, 8vw, 76px) clamp(26px, 8vw, 72px);
  text-align: center;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 28px;
  background: rgba(19, 26, 52, .64);
  box-shadow: 0 24px 80px rgba(0,0,0,.35), inset 0 1px rgba(255,255,255,.08);
  backdrop-filter: blur(18px);
  animation: rise .8s cubic-bezier(.2,.7,.2,1) both;
}

.brand-mark { display: flex; gap: 7px; justify-content: center; margin-bottom: 28px; }
.brand-mark span { display: block; width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 18px var(--accent); }
.brand-mark span:nth-child(2) { background: #bda7ff; box-shadow: 0 0 18px #bda7ff; transform: translateY(-5px); }
.brand-mark span:nth-child(3) { background: #75ddda; box-shadow: 0 0 18px #75ddda; }

.eyebrow { margin: 0 0 16px; color: var(--accent); font-size: .75rem; font-weight: 700; letter-spacing: .28em; }
h1 { margin: 0; font-size: clamp(2.4rem, 8vw, 4.5rem); line-height: 1.15; letter-spacing: .08em; font-weight: 800; text-shadow: 0 8px 30px rgba(117, 142, 255, .24); }
.message { margin: 24px 0 32px; color: var(--muted); font-size: clamp(1rem, 2.7vw, 1.15rem); line-height: 2; }
.progress { width: min(100%, 250px); height: 4px; margin: 0 auto 24px; overflow: hidden; border-radius: 99px; background: rgba(255,255,255,.1); }
.progress span { display: block; width: 42%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--accent-bright)); box-shadow: 0 0 14px var(--accent); animation: load 2.8s ease-in-out infinite; }
.url { margin: 0; color: rgba(222,228,248,.55); font-size: .8rem; letter-spacing: .08em; }

@keyframes rise { from { opacity: 0; transform: translateY(18px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes drift { from { transform: translate3d(-18px, 0, 0) scale(1); } to { transform: translate3d(18px, 24px, 1px) scale(1.12); } }
@keyframes load { 0%, 100% { transform: translateX(-130%); } 50% { transform: translateX(260%); } }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; } }