*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    background: #f2f2f7;
    color: #1c1c1e;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0,0,0,0.04) 0%, transparent 70%),
        radial-gradient(ellipse 60% 40% at 80% 110%, rgba(0,0,0,0.03) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}
.cs-card {
    position: relative;
    z-index: 1;
    width: calc(100% - 2rem);
    max-width: 420px;
    padding: 2.75rem 2.5rem 2.25rem;
    text-align: center;
    background: rgba(255,255,255,0.72);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    backdrop-filter: blur(28px) saturate(180%);
    border: 1px solid rgba(255,255,255,0.85);
    border-radius: 28px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.08), 0 24px 48px rgba(0,0,0,0.06);
}
.cs-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #636366;
    background: rgba(0,0,0,0.05);
    border-radius: 99px;
    padding: 0.35em 0.9em;
    margin-bottom: 1.75rem;
}
.cs-badge::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #8e8e93;
    animation: cs-pulse 2.4s ease-in-out infinite;
}
@keyframes cs-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.4; transform: scale(0.75); }
}
.cs-site-name {
    font-family: -apple-system, "SF Pro Display", "Helvetica Neue", sans-serif;
    font-size: clamp(1.25rem, 5vw, 1.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: #1c1c1e;
    margin-bottom: 1rem;
    overflow-wrap: anywhere;
}
.cs-divider {
    width: 2rem;
    height: 2px;
    background: linear-gradient(90deg, transparent, #8e8e93, transparent);
    border-radius: 1px;
    margin: 0 auto 1rem;
}
.cs-tagline {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: #636366;
    margin-bottom: 0;
}
.cs-powered {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    margin-top: 2.25rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(0,0,0,0.07);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: #aeaeb2;
    text-decoration: none;
    transition: color 0.18s ease;
}
.cs-powered:hover { color: #8e8e93; }
@media (max-width: 480px) {
    .cs-card { padding: 2.25rem 1.75rem 2rem; border-radius: 22px; }
}
@media (prefers-color-scheme: dark) {
    body { background: #000000; color: #f2f2f7; }
    body::before {
        background:
            radial-gradient(ellipse 80% 60% at 50% -10%, rgba(255,255,255,0.03) 0%, transparent 70%),
            radial-gradient(ellipse 60% 40% at 80% 110%, rgba(255,255,255,0.02) 0%, transparent 70%);
    }
    .cs-card {
        background: rgba(28,28,30,0.78);
        border-color: rgba(255,255,255,0.10);
        box-shadow: 0 2px 4px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.4), 0 24px 48px rgba(0,0,0,0.3);
    }
    .cs-badge { color: #aeaeb2; background: rgba(255,255,255,0.08); }
    .cs-badge::before { background: #636366; }
    .cs-site-name { color: #f2f2f7; }
    .cs-divider { background: linear-gradient(90deg, transparent, #48484a, transparent); }
    .cs-tagline { color: #8e8e93; }
    .cs-powered { border-top-color: rgba(255,255,255,0.08); color: #48484a; }
    .cs-powered:hover { color: #636366; }
}