.drivebit-main-promo {
    max-width: 1200px;
    width: 100%;
    margin: 20px auto 0;
    padding: 0 40px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.drivebit-promo-card {
    width: 100%;
    padding: 24px 32px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    box-sizing: border-box;
}

.drivebit-promo-card--why {
    background: #e3f2fd;
}

.drivebit-promo-card--earn {
    background: #ffffff;
}

.drivebit-promo-why-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    align-items: stretch;
}

.drivebit-promo-why-left {
    flex: 1;
    min-width: 260px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
}

.drivebit-promo-heading-title {
    display: block;
    font-size: 32px;
    font-weight: 700;
    line-height: 1.25;
    color: #000;
    margin: 0 0 100px;
}

.drivebit-promo-heading-subtitle {
    display: block;
    font-size: 24px;
    line-height: 1.35;
    color: #000;
    margin: 0;
}

.drivebit-promo-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    border: 0;
    border-radius: 20px;
    background: #2962ff;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    text-decoration: none;
    cursor: pointer;
    width: 292px;
    height: 90px;
    max-width: 100%;
}

.drivebit-promo-advantages {
    flex: 2;
    min-width: 250px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    row-gap: 68px;
    column-gap: 40px;
}

.drivebit-promo-chip {
    height: 150px;
    width: 100%;
    max-width: 330px;
    perspective: 1000px;
    box-sizing: border-box;
    cursor: pointer;
}

.drivebit-promo-chip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.drivebit-promo-chip:hover .drivebit-promo-chip-inner,
.drivebit-promo-chip:focus-within .drivebit-promo-chip-inner {
    transform: rotateY(180deg);
}

.drivebit-promo-chip-face {
    position: absolute;
    inset: 0;
    padding: 14px 18px;
    border-radius: 20px;
    box-sizing: border-box;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.drivebit-promo-chip-face--front {
    background: #09052b;
    color: #fff;
    font-size: 24px;
    font-weight: 600;
    line-height: 1.25;
}

.drivebit-promo-chip-face--back {
    background: #fff;
    color: #000;
    font-size: 14px;
    line-height: 1.4;
    transform: rotateY(180deg);
    overflow-y: auto;
}

.drivebit-promo-earn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.drivebit-promo-earn-title {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    line-height: 1.25;
    color: #000;
}

.drivebit-promo-earn-text {
    margin: 0;
    max-width: 480px;
    font-size: 14px;
    line-height: 1.5;
    color: #6b7280;
}

.drivebit-promo-earn .drivebit-promo-btn {
    margin-top: 20px;
    width: 100%;
    max-width: 280px;
}

@media (max-width: 768px) {
    .drivebit-main-promo {
        padding: 0 16px;
    }

    .drivebit-promo-card {
        padding: 16px 8px;
    }

    .drivebit-promo-why-layout {
        flex-direction: column;
    }

    .drivebit-promo-heading-title {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .drivebit-promo-heading-subtitle {
        font-size: 20px;
    }

    .drivebit-promo-btn {
        width: 100%;
        height: 72px;
        font-size: 14px;
    }

    .drivebit-promo-advantages {
        display: flex;
        flex-direction: column;
        gap: 16px;
        min-width: 0;
    }

    .drivebit-promo-chip {
        height: 120px;
        max-width: none;
    }

    .drivebit-promo-chip-face--front {
        font-size: 18px;
    }

    .drivebit-promo-earn-title {
        font-size: 20px;
    }
}