.portal-explanation-modal {
    position: fixed;
    inset: 0;
    z-index: 1450;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portal-explanation-modal__backdrop {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top, rgba(15,23,42,0.96) 0, rgba(15,23,42,0.9) 60%);
}

.portal-explanation-modal__panel {
    position: relative;
    max-width: 880px;
    width: 90%;
    max-height: 90vh;
    background:
        radial-gradient(circle at top left, rgba(15,23,42,0.98) 0, rgba(15,23,42,0.94) 70%);
    border-radius: 16px;
    border: 1px solid rgba(59, 130, 246, 0.9);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.95);
    display: flex;
    flex-direction: column;
    padding: 14px 18px 12px;
    box-sizing: border-box;
    z-index: 1;
}

.portal-explanation-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.portal-explanation-modal__title {
    font-size: 16px;
    font-weight: 600;
    color: #e5e7eb;
    margin: 0;
}

.portal-explanation-modal__close {
    border: none;
    background: transparent;
    color: #9ca3af;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.portal-explanation-modal__body {
    flex: 1 1 auto;
    overflow: hidden;
    padding-right: 0;
    font-size: 13px;
    color: #e5e7eb;
}

.portal-explanation-modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 10px;
}

.portal-explanation-modal__btn {
    border-radius: 9999px;
    border: 1px solid rgba(148, 163, 184, 0.8);
    background: transparent;
    color: #e5e7eb;
    font-size: 12px;
    padding: 5px 14px;
    cursor: pointer;
}

.portal-explanation {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.portal-explanation__title {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 6px;
}

.portal-explanation__content {
    font-size: 13px;
    line-height: 1.6;
    color: #d1d5db;
}

.portal-explanation__desc {
    margin: 0;
    font-size: 13px;
    color: #9ca3af;
}