* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    overflow-x: hidden;
}

body {
    font-family: Arial, sans-serif;
    background:
        radial-gradient(circle at top, rgba(255,43,214,0.16), transparent 32%),
        radial-gradient(circle at bottom, rgba(0,229,255,0.12), transparent 34%),
        #0a0a0a;
    color: white;
}

.lander {
    width: 100%;
    max-width: 480px;
    margin: auto;
    padding: 8px 12px 18px;
}

.hero {
    text-align: center;
    padding-top: 4px;
}

.logo {
    width: 100%;
    max-width: 250px;
    display: block;
    margin: 0 auto -4px;
}

.badge {
    display: inline-flex;
    margin-top: 4px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #fff;
    background: linear-gradient(135deg, #ff2bd6, #7b3cff, #00e5ff);
    box-shadow:
        0 0 18px rgba(255,43,214,0.45),
        0 0 30px rgba(0,229,255,0.22);
}

.main-card {
    margin-top: 12px;
    padding: 18px 14px;
    border-radius: 22px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(17,17,17,0.72);
    box-shadow:
        0 0 24px rgba(255,43,214,0.10),
        inset 0 0 24px rgba(255,255,255,0.025);
}

h1 {
    margin: 0;
    font-size: 30px;
    line-height: 1.1;
}

.tagline {
    margin: 10px auto 14px;
    max-width: 360px;
    color: #d7d7d7;
    font-size: 14px;
    line-height: 1.45;
}

.feature-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 14px 0;
}

.feature-list div {
    padding: 10px 8px;
    border-radius: 14px;
    font-size: 13px;
    font-weight: 800;
    background: rgba(255,255,255,0.055);
    border: 1px solid rgba(255,255,255,0.08);
}

.primary-btn,
.secondary-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    margin-top: 10px;
    border-radius: 999px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 900;
    border: 0;
    cursor: pointer;
}

.primary-btn {
    color: #000;
    background: #fff;
    box-shadow:
        0 0 0 3px rgba(255,255,255,0.8),
        0 0 24px rgba(255,43,214,0.8),
        0 0 42px rgba(0,229,255,0.45);
    animation: installPulse 1.8s infinite;
}

.secondary-btn {
    color: #fff;
    background: linear-gradient(135deg, #ff2bd6, #7b3cff, #00e5ff);
    box-shadow:
        0 0 18px rgba(255,43,214,0.35),
        0 0 28px rgba(0,229,255,0.22);
}

.primary-btn:active,
.secondary-btn:active {
    transform: scale(0.96);
}

.ios-help,
.android-help {
    margin-top: 14px;
    padding: 12px;
    border-radius: 16px;
    font-size: 13px;
    line-height: 1.45;
    color: #eaeaea;
    background: rgba(0,0,0,0.28);
    border: 1px solid rgba(255,255,255,0.09);
}

.ios-help span {
    color: #00e5ff;
    font-weight: 900;
}

.mini-card {
    margin-top: 12px;
    padding: 12px;
    border-radius: 18px;
    font-size: 13px;
    line-height: 1.6;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(17,17,17,0.52);
}

.hidden {
    display: none;
}

@keyframes installPulse {
    0% {
        box-shadow:
            0 0 0 3px rgba(255,255,255,0.8),
            0 0 24px rgba(255,43,214,0.75);
    }
    50% {
        box-shadow:
            0 0 0 5px rgba(255,255,255,1),
            0 0 34px rgba(255,43,214,1),
            0 0 54px rgba(0,229,255,0.65);
    }
    100% {
        box-shadow:
            0 0 0 3px rgba(255,255,255,0.8),
            0 0 24px rgba(255,43,214,0.75);
    }
}