.checkout-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 26rem),
        radial-gradient(circle at top right, rgba(34, 197, 94, 0.10), transparent 24rem),
        #f8fafc;
}

.checkout-topbar {
    width: min(1120px, calc(100% - 28px));
    height: 64px;
    margin: 14px auto 0;
    padding: 0 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid var(--border);
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(18px);
}

.checkout-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
}

.checkout-brand span {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    font-weight: 900;
}

.checkout-login {
    min-height: 42px;
    padding: 0 16px;
    display: inline-flex;
    align-items: center;
    border-radius: 14px;
    color: var(--primary);
    background: #ffffff;
    border: 1px solid var(--border);
    font-weight: 900;
}

.checkout-compact {
    width: min(1120px, calc(100% - 28px));
    margin: 18px auto 70px;
}

.checkout-card {
    padding: 22px;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--border);
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.10);
}

.checkout-card__head {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.checkout-card__head h1 {
    width: fit-content;
    margin: 0;
    padding: 8px 13px;
    border-radius: 999px;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.09);
    font-size: 0.78rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.checkout-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 295px;
    gap: 22px;
    align-items: start;
}

.checkout-main {
    display: grid;
    gap: 18px;
}

.checkout-block {
    padding: 0 0 20px;
    border-bottom: 1px solid var(--border);
}

.checkout-block:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.checkout-block h2 {
    margin: 0 0 14px;
    font-size: 1.08rem;
    letter-spacing: -0.02em;
}

.checkout-side {
    position: sticky;
    top: 92px;
    display: grid;
    gap: 16px;
    padding: 18px;
    border-radius: 24px;
    background: #f8fafc;
    border: 1px solid var(--border);
}

.summary-plan {
    padding: 16px;
    border-radius: 20px;
    background: #ffffff;
    border: 1px solid var(--border);
}

.summary-plan small {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-weight: 900;
}

.summary-plan strong {
    display: block;
    font-size: 1.04rem;
    line-height: 1.35;
}

.checkout-side__items {
    display: grid;
    gap: 8px;
}

.checkout-side__items span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 850;
}

.checkout-side__items span::before {
    content: "✓";
    width: 18px;
    height: 18px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    color: #166534;
    background: #dcfce7;
    font-size: 0.7rem;
    font-weight: 900;
}

.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

@media (max-width: 920px) {
    .checkout-grid {
        grid-template-columns: 1fr;
    }

    .checkout-side {
        position: static;
    }
}

@media (max-width: 640px) {
    .checkout-topbar {
        height: 58px;
        margin-top: 8px;
        border-radius: 18px;
    }

    .checkout-brand strong {
        font-size: 0.95rem;
    }

    .checkout-brand span {
        width: 36px;
        height: 36px;
    }

    .checkout-compact {
        width: min(100% - 20px, 1120px);
        margin-top: 14px;
    }

    .checkout-card {
        padding: 18px;
        border-radius: 24px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }
}