:root {
    --bg: #555a5e;
    --bg-deep: #3d4246;
    --card: rgba(20, 25, 29, 0.88);
    --card-border: rgba(180, 190, 196, 0.28);
    --text: #eef2f4;
    --muted: #b4bcc1;
    --metal: #d9dde0;
    --accent: #63cfff;
    --accent-bright: #b9f3ff;
    --success: #55d88a;
}

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

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    background:
        radial-gradient(
            circle at 50% 38%,
            rgba(70, 190, 255, 0.16) 0%,
            rgba(70, 190, 255, 0.06) 18%,
            rgba(0, 0, 0, 0) 45%
        ),
        linear-gradient(
            135deg,
            #62676b 0%,
            #4f5458 45%,
            #464b4f 100%
        );
    color: var(--text);
    font-family:
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    position: relative;
    overflow: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.055;
    background-image:
        repeating-linear-gradient(
            0deg,
            rgba(255, 255, 255, 0.5) 0,
            rgba(255, 255, 255, 0.5) 1px,
            transparent 1px,
            transparent 3px
        );
    mix-blend-mode: overlay;
}

.card {
    position: relative;
    background:
        linear-gradient(
            145deg,
            rgba(35, 42, 47, 0.94),
            rgba(13, 17, 20, 0.92)
        );
    border: 1px solid var(--card-border);
    border-radius: 18px;
    padding: 42px 38px 34px;
    max-width: 520px;
    width: 100%;
    text-align: center;
    box-shadow:
        0 24px 70px rgba(0, 0, 0, 0.42),
        0 0 45px rgba(52, 185, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
}

.logo {
    display: block;
    width: 210px;
    height: 210px;
    max-width: 65%;
    object-fit: contain;
    margin: 0 auto 26px;
    border-radius: 8px;
    box-shadow:
        0 14px 35px rgba(0, 0, 0, 0.35),
        0 0 35px rgba(67, 196, 255, 0.08);
}

.status {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1.8px;
    margin-bottom: 16px;
}

.dot {
    width: 9px;
    height: 9px;
    background: var(--success);
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
    box-shadow: 0 0 10px rgba(85, 216, 138, 0.8);
    vertical-align: -1px;
}

h1 {
    font-size: clamp(24px, 5vw, 32px);
    line-height: 1.2;
    font-weight: 600;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
}

.accent {
    color: var(--metal);
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.15),
        0 0 18px rgba(99, 207, 255, 0.08);
}

p {
    color: var(--muted);
    line-height: 1.65;
    font-size: 15px;
}

footer {
    margin-top: 30px;
    padding-top: 18px;
    border-top: 1px solid rgba(180, 190, 196, 0.14);
    font-size: 11px;
    color: #7f898f;
    letter-spacing: 0.3px;
}

@media (max-width: 480px) {
    body {
        padding: 20px 14px;
    }

    .card {
        padding: 32px 24px 28px;
    }

    .logo {
        width: 170px;
        height: 170px;
    }
}