body {
    font-family: Arial, sans-serif;
    background: radial-gradient(circle at top right, #2c1112 0%, #121214 38%, #09090b 100%);
    color: #fff;
    margin: 0;
    padding: 20px 14px 30px;
}

.subscription-container {
    max-width: 980px;
    margin: 0 auto;
}

h1 {
    margin: 18px 0 10px;
    font-size: clamp(28px, 6vw, 42px);
    color: #f5f5f5;
}

.lead {
    color: #c6c6c6;
    margin: 0;
    font-size: 15px;
}

.series-tabs {
    margin-top: 22px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.series-tab {
    border: 1px solid #3a3a3f;
    background: #17171a;
    color: #e8e8e8;
    border-radius: 999px;
    padding: 10px 16px;
    font-weight: 700;
    letter-spacing: 0.2px;
    cursor: pointer;
}

.series-tab.active {
    background: rgba(255, 77, 77, 0.15);
    border-color: rgba(255, 77, 77, 0.6);
    color: #fff;
}

.plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.plan {
    background: linear-gradient(165deg, #202025 0%, #141417 100%);
    border-radius: 14px;
    border: 1px solid #2f2f35;
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.3);
    padding: 22px 18px;
    display: flex;
    flex-direction: column;
    min-height: 220px;
}

.plan h2 {
    margin: 0;
    color: #ffffff;
    font-size: 20px;
}

.plan p {
    color: #bcbcbc;
    margin: 12px 0 14px;
    line-height: 1.5;
    flex-grow: 1;
}

.plan h3 {
    color: #ff4d4d;
    margin: 0 0 14px;
    font-size: 26px;
}

.price-term {
    font-size: 13px;
    color: #a0a0a7;
}

.subscribe-btn {
    background: #ff4d4d;
    color: #fff;
    border: none;
    padding: 11px 16px;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.subscribe-btn:hover {
    background: #d43d3d;
    transform: translateY(-1px);
}

.recommended {
    border-color: rgba(255, 77, 77, 0.55);
    box-shadow: 0 14px 26px rgba(136, 23, 23, 0.35);
}

@media (max-width: 640px) {
    body {
        padding: 14px 10px 24px;
    }

    .plan {
        min-height: 200px;
    }
}