* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --text: #ffffff;
    --muted: rgba(255, 255, 255, 0.82);
    --panel: rgba(0, 0, 0, 0.48);
    --border: rgba(255, 255, 255, 0.12);
    --link: #a9dcff;
    --link-hover: #d3efff;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #16222a, #3a6073);
    color: var(--text);
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.container {
    width: min(900px, 100%);
    text-align: center;
    padding: 44px 40px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(8px);
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 800ms ease, transform 800ms ease;
}

    .container.is-visible {
        opacity: 1;
        transform: translateY(0);
    }

.site-header {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.brand-logo {
    width: 120px;
    height: auto;
    margin-bottom: 14px;
    user-select: none;
    -webkit-user-drag: none;
    filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.35));
}

.site-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.3px;
    margin-bottom: 10px;
}

.subtitle {
    color: var(--muted);
    font-size: 1.45rem;
    margin-bottom: 28px;
}

.site-main p {
    color: var(--muted);
    font-size: 1.1rem;
    line-height: 1.75;
    margin: 16px 0;
}

.site-main strong {
    color: var(--text);
    font-weight: 700;
    font-size: 1.2rem;
}

.site-main a {
    color: var(--link);
    text-decoration: underline;
    text-underline-offset: 3px;
}

    .site-main a:hover {
        color: var(--link-hover);
    }

.cta {
    margin-top: 26px;
}

.button {
    display: inline-block;
    padding: 12px 18px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.10);
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    transition: transform 120ms ease, background 200ms ease, border-color 200ms ease;
}

    .button:hover {
        background: rgba(255, 255, 255, 0.16);
        border-color: rgba(255, 255, 255, 0.18);
        transform: translateY(-1px);
    }

    .button:active {
        transform: translateY(0);
    }

.site-footer {
    margin-top: 40px;
    font-size: 0.95rem;
    color: var(--muted);
}