body {
    background: #101317;
    color: #f4f6f8;
    font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
    box-sizing: border-box;
}

.container {
    width: min(100%, 460px);
    text-align: center;
    padding: 38px 32px 26px;
    background: #181d23;
    border: 1px solid #2b333d;
    border-radius: 14px;
    box-shadow: 0 20px 55px rgba(0, 0, 0, 0.35);
    box-sizing: border-box;
}

#intercept-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #101317;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
}

.btn {
    display: block;
    background: #20262e;
    color: #f4f6f8;
    padding: 17px 18px;
    margin: 12px 0;
    border-radius: 8px;
    text-decoration: none;
    border: 1px solid #35404d;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
    background: #29323c;
    border-color: #8393a5;
    transform: translateY(-1px);
}

.eyebrow {
    color: #8fa4ba;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
}

.container h1 {
    margin: 12px 0 8px;
    font-size: 26px;
}

.subtitle {
    color: #94a0ad;
    margin: 0 0 24px;
    font-size: 14px;
}

.footer {
    color: #697582;
    border-top: 1px solid #2b333d;
    margin-top: 26px;
    padding-top: 18px;
    font-size: 12px;
}

@media (max-width: 480px) {
    body {
        padding: 16px;
    }

    .container {
        padding: 30px 20px 22px;
    }
}